Abstract

A heat transfer element comprising an inlet, an outlet, vertical heat exchanger tubes, a lower collector and an upper distributor. A vertical riser pipe is arranged between the inlet and the upper distributor. This minimizes thermal stress in the heat exchanger element in the application.

IPC Classes  ?

• F22B 31/00 - Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatusArrangements or dispositions of combustion apparatus
• F22B 31/08 - Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion

Abstract

A heat treatment plant for continuous heat treatment of a metal strip has an annealing furnace and a subsequent over-ageing chamber that can be heated. In this plant, the metal strip is guided over several deflector rolls spaced vertically apart in the over-ageing chamber so that it passes through the over-ageing chamber in a meandering path. At least one deflector roll can be moved in vertical direction so that the strip length and the retention time of the metal strip in the over-ageing chamber can be set. A method for heat-treating a metal strip is also disclosed.

IPC Classes  ?

• C21D 9/56 - Continuous furnaces for strip or wire
• C21D 1/767 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulationReheating thereof
• C21D 9/573 - Continuous furnaces for strip or wire with cooling

Abstract

The invention relates to a press or an automatic punching press (1) having at least one drive (10, 11, 12, 13) and at least two eccentric shafts (5, 6, 7, 8) which are disposed in a head piece (9) of the press (1) and drive at least one ram (2, 19) via connecting rods (3, 3', 4, 4'). According to the invention, the two eccentric shafts (5, 6, 7, 8) are positioned perpendicularly to one another.

IPC Classes  ?

• B30B 1/26 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
• B30B 15/00 - Details of, or accessories for, pressesAuxiliary measures in connection with pressing
• B21J 9/18 - Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars

Abstract

A method of controlling the drying of cellulose pulp in a drying step of a pulp production process. The method including measuring a plurality of process parameters in at least one previous process step; calculating, based on said process parameters, a drying predictive index indicative of the characteristic of a portion of cellulose pulp processed in said previous process step; determining, based on said drying predictive index, at least one drying parameter for drying of said portion of cellulose pulp; and controlling the drying of said portion of cellulose pulp using said drying parameter.

IPC Classes  ?

• D21G 9/00 - Other accessories for paper-making machines
• D21F 5/18 - Drying webs by hot air
• D21C 9/18 - De-watering
• F26B 13/12 - Controlling movement, tension or position of material
• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply

Abstract

The invention relates to a heat exchanger element (1) comprising an inlet (2), an outlet (3), vertical heat exchanger tubes (4), a lower collector (5) and an upper distributor (6). The invention is characterized in that a vertical riser (7) is placed between the inlet (2) and the upper distributor (6), thus allowing thermal stress in the heat exchanger element (1) to be minimized if necessary.

IPC Classes  ?

• F22B 31/00 - Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatusArrangements or dispositions of combustion apparatus
• F22B 21/02 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially-straight water tubes
• F22B 21/34 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
• F26B 3/084 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed
• F28D 13/00 - Heat-exchange apparatus using a fluidised bed
• F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight

Abstract

The invention relates to a strip treatment system for the continuous thermal treatment of a metal strip (6), comprising an annealing furnace and a heatable overageing chamber (11) downstream thereof. In the overageing chamber (11), the metal strip (6) is guided over a plurality of vertically spaced deflecting rollers (12, 12', 13, 13') so that the metal strip meanders through the overageing chamber (11). According to the invention, at least one deflecting roller (12', 13') is movable in the vertical direction, thus allowing the strip length or the residence time of the metal strip (6) in the overageing chamber (11) to be adjusted. The invention also relates to a method for the thermal treatment of a metal strip (6).

IPC Classes  ?

• F27B 9/04 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
• C21D 9/56 - Continuous furnaces for strip or wire
• F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
• F27B 9/14 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment

Abstract

The invention relates to an apparatus (11) and to a method for treating a lumpy material with a gas, wherein the material is guided in a conveying direction (6) over the bottom (5) and in a cross-flow arrangement with the gas. The invention is characterised in that the bottom (5) has a first region (8) and a second region (9), the bottom (5) in the second region (9) being positioned below the bottom (5) in the first region (8) so as to be offset normal to the conveying direction (6), it being possible to make the bottom (5) vibrate using a vibrator (10) that is connected to the apparatus (11). This results in improved mixing of the lumpy material with reduced energy consumption.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 17/26 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfacesMachines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating shelves, sieves or trays

Abstract

The present invention relates to a method of controlling the drying of cellulose pulp in a drying step of a pulp production process. The method comprises measuring a plurality of process parameters in at least one previous process step; calculating, based on said process parameters, a drying predictive index indicative of the characteristic of a portion of cellulose pulp processed in said previous process step; determining, based on said drying predictive index, at least one drying parameter for drying of said portion of cellulose pulp; and controlling the drying of said portion of cellulose pulp using said drying parameter.

IPC Classes  ?

• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air
• D21G 9/00 - Other accessories for paper-making machines
• F26B 13/00 - Machines or apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
• F26B 13/06 - Machines or apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a sinuous or zig-zag path
• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply

Abstract

The present invention relates to a method of determining the moisture content of a web of cellulose pulp arriving at a pulp dryer. The method comprises measuring, at several instants during a predetermined time interval, the moisture content of said web using a moisture sensor arranged upstream of the pulp dryer; measuring state variables of drying medium of said pulp dryer; calculating, based on said moisture sensor measurements, a total value of moisture introduced into the pulp dryer by a portion of said web during said predetermined time interval; determining, based on said measured state variables, a predicted total value of moisture present inside the pulp dryer; comparing said calculated total value with said predicted total value to obtain a deviation therebetween; calibrating said moisture sensor using said deviation; and measuring the moisture content of a web of cellulose pulp using said calibrated moisture sensor.

IPC Classes  ?

• D21F 5/00 - Dryer section of machines for making continuous webs of paper
• D21F 5/18 - Drying webs by hot air
• D21F 7/00 - Other details of machines for making continuous webs of paper
• G01N 33/34 - Paper

Abstract

A membrane filter plate assembly (10) comprises a membrane filter plate (20), which is provided with a membrane chamber connector (50), a pressure hose connector (30), which is at least partly made of an electrically conductive material, and which comprises a first pressure hose connector fitting portion (70) for being fluidly connected to the membrane chamber connector (50), and a radially protruding engagement shoulder (90), and a clamping part (40), which is at least partly made of an electrically conductive material, and which comprises a central portion (100) and two lateral leg portions (105), wherein the engagement shoulder (90) abuts against the central portion (100) on a second side (115) thereof, thereby allowing the clamping part (40), in a clamping state thereof, to be clamped with its lateral leg portions (105) against the membrane filter plate (20) to establish an electrical connection between the lateral leg portions (105) and the pressure hose connector (30).

IPC Classes  ?

• B01D 25/164 - Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
• B01D 25/176 - Filter presses, i.e. of the plate or plate and frame type attaching the filter element to the filter press plates, e.g. around the central feed hole in the plates
• B01D 25/21 - Plate and frame presses
• B01D 25/28 - Leaching or washing filter cakes in the filter
• B01D 25/30 - Feeding devices

Abstract

The invention relates to a method for treating metal strip in a directly fired furnace through which the metal strip is guided. The furnace is fired directly by gas burners and has a non-fired zone through which the exhaust gases from the fired zone flow and thus heat the metal strip. After leaving the non-fired zone, the exhaust gases from the furnace undergo post-combustion in an afterburner chamber. According to the invention, methane is injected into the non-fired zone, which causes nitrogen oxides contained in the waste gas to be converted into hydrogen cyanide.

IPC Classes  ?

• C21D 9/573 - Continuous furnaces for strip or wire with cooling
• C21D 9/56 - Continuous furnaces for strip or wire
• B01D 53/56 - Nitrogen oxides
• B01D 53/76 - Gas phase processes, e.g. by using aerosols

Abstract

A method for treating a metal strip, where the metal strip undergoes heat treatment in a directly fired furnace and is subsequently heat-treated further in a radiant tube furnace. At least part of the exhaust gases from the radiant tubes is fed to the directly fired furnace.

IPC Classes  ?

• F23C 9/08 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
• C21D 9/56 - Continuous furnaces for strip or wire
• F23C 6/04 - Combustion apparatus characterised by the combination of two or more combustion chambers in series connection
• F23J 15/06 - Arrangements of devices for treating smoke or fumes of coolers
• F23L 9/04 - Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air beyond the fire, i.e. nearer the smoke outlet
• F27B 9/12 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
• F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
• F27B 9/30 - Details, accessories or equipment specially adapted for furnaces of these types
• F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases

Abstract

The present invention relates to a method of determining the moisture content of a web (3) of cellulose pulp arriving at a pulp dryer (1). The method comprises measuring, at several instants during a predetermined time interval, the moisture content of said web (3) using a moisture sensor (19) arranged upstream of the pulp dryer (1); measuring state variables of drying medium of said pulp dryer (1); calculating, based on said moisture sensor measurements, a total value of moisture introduced into the pulp dryer (1) by a portion of said web (3) during said predetermined time interval; determining, based on said measured state variables, a predicted total value of moisture present inside the pulp dryer (1); comparing said calculated total value with said predicted total value to obtain a deviation therebetween; calibrating said moisture sensor (19) using said deviation; and measuring the moisture content of a web (3) of cellulose pulp using said calibrated moisture sensor (19).

IPC Classes  ?

• D21F 5/00 - Dryer section of machines for making continuous webs of paper
• D21F 7/00 - Other details of machines for making continuous webs of paper

Abstract

The invention relates to a filter press (1), comprising a plate pack (3), which has a plurality of filter plates (2) and has filter chambers arranged between the filter plates (2). The filter plates (2) are positioned so as to be slidable relative to each other so that the filter chambers can be emptied if necessary. According to the invention, in order to achieve increased efficiency, at least one separating device is provided, by means of which a sub-pack (6a, 6b, 6c) of the plate pack (3) can be slid relative to a further sub-pack (6a, 6b, 6c) of the plate pack (3) in order to enable simultaneous emptying of filter chambers and/or simultaneous exchanging of filtering means in the individual sub-packs (6a, 6b, 6c). The invention further relates to a method for operating a filter press (1), comprising a plate pack (3), which has a plurality of filter plates (2) and has filter chambers arranged between the filter plates (2).

IPC Classes  ?

• B01D 25/164 - Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
• B01D 25/172 - Plate spreading means

Abstract

A method for heat-treating a metal strip, where the metal strip is pre-heated continuously in a pre-heating zone with the aid of hot gas and subsequently undergoes further heat treatment in a directly fired furnace in a reducing and/or oxidizing atmosphere. The metal strip is pre-heated in the pre-heating zone with hot inert gas and further heated with an electric heating system before entering the directly fired furnace. A furnace plant for implementing the process and a related heat recovery system are also disclosed.

IPC Classes  ?

• C21D 9/60 - Continuous furnaces for strip or wire with induction heating
• C21D 1/74 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
• C21D 9/56 - Continuous furnaces for strip or wire
• F27B 9/04 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
• F27B 9/12 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
• F27B 9/06 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and chargeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity electrically heated
• F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
• F27B 9/36 - Arrangements of heating devices
• F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
• C21D 1/42 - Induction heating

Abstract

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

IPC Classes  ?

• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
• C01G 49/14 - Sulfates
• C01D 5/18 - Dehydration
• F26B 3/00 - Drying solid materials or objects by processes involving the application of heat
• F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
• F26B 21/08 - Humidity

Abstract

The invention relates to a method for treating a metal strip (5), wherein the metal strip (5) is initially heat treated in a direct fired furnace (1) and then is further heat-treated further in a furnace (10) heated with radiant tubes. According to the invention, at least one part of the waste gas (16) from the radiant tubes is guided away from the direct fired furnace (1).

IPC Classes  ?

• C21D 9/56 - Continuous furnaces for strip or wire
• F27D 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

This invention concerns a method for treating a metal strip (5) in a directly fired furnace (1), through which the metal strip (5) is passed. The furnace (1) is directly heated by gas burners and has a non-heated region (7), through which the waste gases (14) of the heated region (2) flow and thus preheat the metal strip (5). Downstream of the non-heated region (7), waste furnace gases (14) are subsequently burned in an afterburning chamber (9). According to the invention, in the non-heated region (7), methane is injected into the waste gas (14), whereby nitrogen oxides contained in the waste gas (14) are converted into hydrogen cyanide.

IPC Classes  ?

• C21D 9/56 - Continuous furnaces for strip or wire
• F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
• F27D 7/06 - Forming or maintaining special atmospheres or vacuum within heating chambers
• F27D 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

The present invention relates to a cellulose pulp dryer (1) being operative for drying a web (14) of cellulose pulp by means of gas supplied through gas openings(24) of blow boxes (22, 26)of a first drying section (5), the cellulose pulp dryer (1) comprises at least one light emitting device (41,43) arranged to illuminate at least a portion of said drying section (5). The light emitting device (41, 43) comprises a light emitting diode (59), a heat transfer member (69) and a housing (53) accommodating said light emitting diode (59) and said heat transfer member (69), wherein said heat transfer member (69) is arranged to transfer heat away from said light emitting diode (59).

IPC Classes  ?

• D21F 5/18 - Drying webs by hot air
• F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section

Abstract

The invention relates to a press (1) or automatic punch having a drive (6), which drives a plunger (10) in an oscillating manner via an eccentric shaft (5) and via at least one connecting rod (9), wherein the at least one connecting rod (9) is rotatably mounted on the eccentric shaft (5) at one end (30), and is connected to the plunger (10) at the other end (17). According to the invention, a double-acting hydraulic cylinder (27), which can be driven in a vibratory manner, is arranged in the connecting rod (9). The invention further relates to a method for operating a press (1).

IPC Classes  ?

• B30B 1/26 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
• B30B 15/00 - Details of, or accessories for, pressesAuxiliary measures in connection with pressing
• B30B 15/28 - Arrangements for preventing distortion of, or damage to, presses or parts thereof

Abstract

A screw centrifuge has a rotating, cylindrical drum (11) with openings (14,15) for discharge of settleable solids (16), floating solids (17), and separating liquid (18). A rotatable shaft (12) has openings (22) for infeed of the solids to be separated, and two sections of screw flights (13,13′,13″,23,23′) working in opposite directions. A baffle disc (20) is arranged on the shaft between the infeed opening (22) and the discharge opening (14) for the settleable solids (16). The flight (13′,13″) of the screw for the settleable solids (16) surrounds the flight (23,23′) of the screw for the floating solids (17), and also work in opposite directions. The screw section for the floating solids (17) is designed as a multi-channel screw. The outer flight (13′,13″) of the screw for the settleable solids (16) can also have several channels.

IPC Classes  ?

• B04B 1/20 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
• B04B 7/08 - Rotary bowls
• B04B 11/02 - Continuous feeding or dischargingControl arrangements therefor

Abstract

The subject matter of this invention is a method for the heat treatment of a metal strip (1), wherein the metal strip (1) is continuously preheated with the aid of hot gas (6) in a preheating zone (3) and subsequently further heat-treated in a reducing and/or oxidizing atmosphere in a directly fired furnace. According to the invention, the metal strip (1) is preheated in the preheating zone (3) by hot shielding gas (6), and before it enters the directly fired furnace (8) is heated further with an electrical heating system (5). The subject matter of this invention is also a furnace installation for carrying out the method according to the invention.

IPC Classes  ?

• C21D 1/74 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
• C21D 9/56 - Continuous furnaces for strip or wire
• C21D 9/60 - Continuous furnaces for strip or wire with induction heating
• F27B 9/04 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
• F27B 9/12 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge

Abstract

The invention relates to a centrifuge, in particular a solid bowl centrifuge, comprising an axial suspension feed tube (9), which leads into a feed chamber (4) of the centrifuge provided with outlet openings (5). The centrifuge is principally characterized in that the outlet openings (5) are designed having curved attachments (8) for deflecting the suspension. The invention further relates to an attachment for use in centrifuges. By means of the invention, gentle introduction of the suspension into the pond can be achieved, whereby the risk of grain fractures in the case of granular suspensions is greatly reduced.

IPC Classes  ?

• B04B 1/20 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Abstract

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

IPC Classes  ?

• F26B 3/00 - Drying solid materials or objects by processes involving the application of heat
• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
• C01D 5/18 - Dehydration
• F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
• F26B 21/08 - Humidity
• C01G 49/14 - Sulfates

Abstract

A paper machine wire which is in the form of a multilayer woven fabric interconnected with cross threads is disclosed, said woven fabric having an overall repeat that contains: upper longitudinal threads (1, 3, 5, etc.) which extend exclusively in an upper woven fabric layer, lower longitudinal threads (2, 4, 6, etc.) which extend exclusively in a lower woven fabric layer, upper cross threads (101, 102, 109, 110, 117, 118, etc.) which extend exclusively in the upper woven fabric layer and are woven together with the upper longitudinal threads, partially forming a first weave, lower cross threads (103, 108, 111, 116, 119, 124, etc.) which extend exclusively in the lower woven fabric layer and are woven together with the lower longitudinal threads, completely forming a second weave, and binding cross threads (104-107, 112-115, 120-123, etc.) which extend in each case both in the upper woven fabric layer and in the lower woven fabric layer and as a result bind the lower woven fabric layer to the upper woven fabric layer. The binding cross threads form, within the overall repeat, functional pairs of cross threads, the cross threads of which alternately complete the first weave. In the overall repeat, the functional pairs of cross threads in the upper woven fabric layer are arranged, as seen in the longitudinal direction, in groups (A-E) of in each case two or more functional pairs of cross threads that are arranged directly one after the other.

IPC Classes  ?

• D21F 1/00 - Wet end of machines for making continuous webs of paper

Abstract

The invention relates to a method for drying salts with a water of crystallisation content in convective apparatuses that can additionally be indirectly heated. The invention is primarily characterised in that the drying process takes place with a moisture content of the drying gas above a determined level. The gas surrounding the salt particles during the drying process therefore has a specific humidity. In this way, the rate of drying is positively influenced.

IPC Classes  ?

• F26B 3/00 - Drying solid materials or objects by processes involving the application of heat
• C01D 5/18 - Dehydration
• F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
• F26B 21/08 - Humidity

Abstract

A method for controlling the atmosphere in a protective gas chamber for the continuous treatment of metal strips. A metal strip is guided into and out of the protective gas chamber via locks. At least one lock has at least two sealing elements for the metal strip which runs through it, with the result that a sealed chamber is formed between the two sealing elements. The gas pressure (P2, PD) is measured in the protective gas chamber and in the sealed chamber of the lock and the pressure (PD) in the sealed chamber is regulated, to be precise in such a way that, during operation, the differential pressure between the protective gas chamber and the sealed chamber is kept as far as possible to an optimum value.

IPC Classes  ?

• F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects
• F27B 9/40 - Arrangements of controlling or monitoring devices
• C21D 9/56 - Continuous furnaces for strip or wire
• F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
• C21D 1/74 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Abstract

A cellulose pulp drying box for drying a web (18) of cellulose pulp comprises blow boxes (26, 32, 126) that are operative for blowing gas towards the web (18) of cellulose pulp for drying the pulp. At least 10% of the total number of blow boxes (26, 32,126) of the drying box (1) are provided, in their respective face (44, 54, 144) facing the web (18) during use of the drying box (1), with blow openings (60) having a characteristic measure of 1.5 to 5. mm through which blow openings (60) gas is blown towards the web (18) during use of the drying box (1). Each blow opening (60) is defined by an outlet opening (68) facing the web (18) during use of the drying box (1), an inlet opening (70) facing the interior of the blow box (26, 32, 126), and a lateral face (66) arranged between the outlet opening (68) and the inlet opening (70). At least a portion of the lateral face (66) of the respective blow opening (60) is provided with a shaped contour (62) for the purpose of sound attenuation.

IPC Classes  ?

• F26B 13/10 - Arrangements for feeding, heating or supporting materialsControlling movement, tension or position of materials
• D21C 9/18 - De-watering
• F26B 13/20 - Supporting materials by fluid jets, e.g. air
• D21F 5/18 - Drying webs by hot air

Abstract

A cellulose pulp drying box for drying a web of cellulose pulp having blow boxes that are operative for blowing gas towards the web of cellulose pulp for drying the pulp. At least 10% of the total number of blow boxes of the drying box are provided, in their respective face, with openings having a characteristic measure of 1.8 to 3. mm and constituting at least 20% of the total degree of perforation of the face of the respective blow box.

IPC Classes  ?

• F26B 13/00 - Machines or apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
• D21F 5/18 - Drying webs by hot air
• F26B 13/20 - Supporting materials by fluid jets, e.g. air

Abstract

A cellulose pulp drying box for drying a web (18) of cellulose pulp comprises a lower blow box (26) for blowing gas upwards towards the web (18) via blow openings, for drying the pulp in accordance with the airborne web principle. The lower blow box (26) comprises a central zone (58) comprising blow openings (70, 72) forming a first type of perforation, and a first lateral zone (52) comprising blow openings (70, 80) forming a second type of perforation, the second type of perforation being different from the first type of perforation. The blow openings (72) of the central zone (58) forma first degree of perforation, and the blow openings (80) of the first lateral zone (52) form a second degree of perforation which is larger than the first degree of perforation. As alternative to or in combination therewith the first lateral zone (252; 352)comprises blow openings (70; 370) arranged to form an air cushion above the lateral zone (252; 352) to lift the web (18) adjacent to a lateral edge (82) thereof.

IPC Classes  ?

• F26B 13/10 - Arrangements for feeding, heating or supporting materialsControlling movement, tension or position of materials
• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air
• F26B 13/20 - Supporting materials by fluid jets, e.g. air

Abstract

A gas blowing cellulose pulp dryer (1) being operative for drying a web (14) of cellulose pulp by means of gas supplied from gas outlets arranged to blow gas towards the web (14). The cellulose pulp dryer (1) comprises at least one turning roll (7) making the web (14) turn when travelling from a first web tension zone (19) of the cellulose pulp dryer (1) to a second web tension zone (20) of the cellulose pulp dryer (1). The cellulose pulp dryer (1) further comprises at least a first web tension control device (28) arranged at the turning roll (7) for controlling the tension of the web (14) in at least one of the web tension zones (19, 20).

IPC Classes  ?

• F26B 13/12 - Controlling movement, tension or position of material
• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air

Abstract

A sheet forming screen is described which is formed as a multi-layer fabric, wherein the fabric has a longitudinal thread repeat of sixteen longitudinal threads, four longitudinal threads (11 to 14) of which are formed as upper longitudinal threads, eight longitudinal threads (31 to 38) of which are formed as lower longitudinal threads, and the remaining four longitudinal threads (21 to 24) of which form two functional longitudinal thread pairs of two longitudinal threads each arranged next to each other which alternately complete the first weave, wherein at least one of the four longitudinal threads which form the two functional longitudinal thread pairs extends both in the upper fabric layer and in the lower fabric layer and thereby binds the lower fabric layer to the upper fabric layer.

IPC Classes  ?

• D21F 1/10 - Wire-cloths
• D21F 7/08 - Felts
• D03D 23/00 - General weaving methods not special to the production of any particular woven fabric or the use of any particular loomWeaves not provided for in any other single group

Abstract

The subject matter of said invention is formed by a method for controlling the atmosphere in a protective gas chamber (2) for the continuous treatment of metal strips (3). Here, the metal strip (3) is guided into and out of the protective gas chamber (2) via locks (4). At least one lock (4) has at least two sealing elements (5, 6) for the metal strip (3) which runs through it, with the result that a sealed chamber (7) is formed between the two sealing elements (5, 6). According to the invention, the gas pressure (P2, PD) is measured in the protective gas chamber (2) and in the sealed chamber (7) of the lock (4) and the pressure (PD) in the sealed chamber (7) is regulated, to be precise in such a way that, during operation, the differential pressure between the protective gas chamber (2) and the sealed chamber (7) is kept as far as possible to an optimum value.

IPC Classes  ?

• F27B 9/28 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
• F27B 9/40 - Arrangements of controlling or monitoring devices
• C21D 9/56 - Continuous furnaces for strip or wire

Abstract

A gas blowing cellulose pulp dryer (1) is operative for drying a web (14) of cellulose pulp by means of gas supplied from gas outlets (24) of blow boxes (22, 26) of a first drying section (5). The cellulose pulp dryer (1) comprises an inspection device (52, 152) having at least a first radiation sensor (35, 135) arranged to detect reflected radiation at the first drying section (5) to detect at least one of a position of the web (14) during operation of the dryer (1), and the occurrence of any residue (48) of the web (14).

IPC Classes  ?

• D21F 5/18 - Drying webs by hot air
• B65H 23/02 - Registering, tensioning, smoothing, or guiding webs transversely
• B65H 26/00 - Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
• D21F 7/04 - Paper-break control devices

Abstract

An arrangement for drying a web (18) of cellulose pulp comprises a drying box (1) which comprises blow boxes (26, 32) that are operative for blowing air towards the web (18) of cellulose pulp for drying the pulp in accordance with the airborne web principle. The drying box (1) comprises a first drying zone (4), which comprises first lower blow boxes (26) arranged to bear the web (18), and a second drying zone (6), which comprises second lower blow boxes (32) arranged to bear the web (18), with the first lower blow boxes (26) being different from the second lower blow boxes (32).

IPC Classes  ?

• D21F 5/18 - Drying webs by hot air
• D21C 9/18 - De-watering
• F26B 13/20 - Supporting materials by fluid jets, e.g. air

Abstract

A cellulose pulp drying box for drying a web (18) of cellulose pulp comprises blow boxes (26) that are operative for blowing gas towards the web (18) of cellulose pulp for drying the pulp. At least10 % of the total number of blow boxes (26) of the drying box are provided, in their respective face(44), with openings (48) having a characteristic measure of 1.8 to 3. mm and constituting at least 20% of the total degree of perforation of the face (44) of the respective blow box (26).

IPC Classes  ?

• D21F 5/18 - Drying webs by hot air
• D21C 9/18 - De-watering
• F26B 13/20 - Supporting materials by fluid jets, e.g. air

Abstract

A reactor apparatus including: an internal mixing chamber including a first chamber section having a cross-sectional area expanding from a biomass inlet to the internal mixing chamber to the a second chamber section; the second chamber section having a substantially uniform internal cross-sectional area from the opposite end of the first chamber section to a discharge end of the mixing chamber; the biomass inlet is coupled to a source of pre-treated biomass external to the reactor vessel, and a rotating mixing device in the internal mixing chamber and coaxial with an axis of the first chamber section.

IPC Classes  ?

• C12M 1/40 - Apparatus specially designed for the use of free, immobilised, or carrier-bound enzymes, e.g. apparatus containing a fluidised bed of immobilised enzymes

Abstract

Methods of producing mechanical pulps from lignocellulosic material including partial defibration of lignocellulosic material in a chip press followed by liquid impregnation, preheating the lignocellulosic material for 20 seconds or less at a pressure between 7.5 and 12 bar (gauge) prior to mechanically refining the lignocellulosic material in a primary mechanical refiner at a pressure between 7.5 and 12 bar (gauge), thus obtaining a high freeness pulp.

IPC Classes  ?

• D21B 1/02 - Pretreatment of the raw materials by physical or chemical means
• D21B 1/12 - Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods by the use of steam
• D21B 1/30 - Defibrating by other means
• D21D 1/30 - Disc mills

Abstract

A method for torrefaction of lignocellulosic biomass using a torrefaction reactor vessel (10, 70, 100) having stacked trays (42, 74, 102, 104), the method including; continuously feeding the biomass to an upper inlet (14) of the torrefaction reactor vessel such that the biomass material is deposited on an upper tray of a plurality of trays stacked vertically within the reactor; as the biomass moves across an upper surface of each of the trays, heating and drying the biomass material with a gas (18) injected into the vessel, wherein the gas is substantially non-oxidizing of the biomass, is under a pressure of at least 20 bar gauge and at a temperature of at least 200°C; cascading the biomass down through the trays (42, 74, 102, 104) by passing the biomass through an opening (46) in each of the trays to deposit the biomass on a lower tray; discharging torrefied biomass from a lower outlet (16, 81, 116) of the torrefaction reactor vessel, and circulating gas (30, 31, 24, 64, 76, 77, 78, 79) extracted from a lower elevation of the reactor vessel to an upper region (15) of the reactor vessel.

IPC Classes  ?

• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining
• C10L 5/44 - Solid fuels essentially based on materials of non-mineral origin on vegetable substances

Abstract

An arrangement (20) for drying cellulose pulp comprises a drying box (22), a web position control unit (24), which is operative for controlling the lateral position of a web (44) of cellulose pulp dried in the drying box (22), and a web forwarding device (28), which is operative for forwarding the web (44) of pulp through the drying box (22) and through the web position control unit (24). The web position control unit (24) comprises a guide roller (54) arrangement comprising at least one guide roller (60, 62) and is operative for delivering a pulp web (44), the lateral position of which has been controlled, at an angle of -45° to +45° to the horizontal plane.

IPC Classes  ?

• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air

Abstract

A sheet-forming wire which is configured as a multiple-layer fabric is described, wherein the fabric has a longitudinal thread repeat of sixteen longitudinal threads, of which four longitudinal threads (11-14) are configured as upper longitudinal threads, of which eight longitudinal threads (31-38) are configured as lower longitudinal threads, and of which the remaining four longitudinal threads (21-24) form two functional longitudinal thread pairs comprising in each case two longitudinal threads which are arranged next to one another and alternately complete the first weave, wherein at least one of the four longitudinal threads which form the two functional longitudinal thread pairs runs both in the upper fabric layer and in the lower fabric layer and, as a result, connects the lower fabric layer to the upper fabric layer.

IPC Classes  ?

• D21F 1/00 - Wet end of machines for making continuous webs of paper

Abstract

The invention relates to a device for hermetically sealing large openings in apparatuses to which low pressure is applied. The device is characterized in that at least one sealing lid is provided, which is pressed onto the lateral wall of the apparatus by bolts that together with a strip are welded onto said lateral wall at the edge of the opening of the apparatus. Thus, good, low-cost and hermetic sealing can be achieved.

IPC Classes  ?

• E04B 1/21 - Connections specially adapted therefor
• E04B 1/22 - Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material with parts being prestressed
• E04C 2/42 - GratingsGrid-like panels
• F17C 13/06 - Closures, e.g. cap, breakable member

Abstract

A water turbine with a rotatable turbine wheel having a wheel disc, buckets fixed to the wheel disc, and nozzle expelling a water jet on the bucket. The rotatable wheel and the nozzle are arranged in a casing with a water outlet. The interior of the casing reduces splash back of discharging water and detrimental water spray on the rotatable wheel. An energy damping device is attached on stationary, water splash exposed parts inside the turbine casing to dissipate energy from water of high velocity leaving the buckets and dense pulverized water mist.

IPC Classes  ?

• F03B 7/00 - Water wheels
• F03B 1/02 - BucketsBucket-carrying rotors
• F03B 11/02 - Casings

Abstract

The invention refers to a distributor plate (12) for fluidized bed equipment (9) with openings (3) and deflector strips (1) arranged directly above them. It is characterised by the deflection strips (1) having an oblong shape, being mounted longitudinally in the fluidized bed equipment (9), in parallel to the main flow direction (19) of the product above the openings (3) in the base plate (2), and having spacers (6) that form an outflow cross-section around the periphery of the deflection strip (1) for the fluidizing gas, where the base plate openings (3) can be designed advantageously with an oblong cross-section. This ensures good fluidization of the material, while also conveying it.

IPC Classes  ?

• F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement

Abstract

The invention relates to a flow accepting base (12) for a fluidizing apparatus (9) with through-openings (3) and deflector plates (1) arranged so as to cover said through-openings. The invention is characterized in that the deflector plates (1) are elongated and are arranged longitudinally in the fluidized bed apparatus (9), parallel to the main direction of flow (19) of the product, above the through-openings (3) in the base plate (2) and have spacers (6) which form an outflow cross section at the periphery of the deflector plate (1) for the fluidizing gas, wherein the base through-openings (3) may be advantageously formed with an elongated cross section. This achieves good fluidization of the material at the same time that it is transported.

IPC Classes  ?

• B01J 8/36 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed through which there is an essentially horizontal flow of particles
• B01J 8/44 - Fluidisation grids

Abstract

A reactor for the treatment of lignocellulosic material and related methods. The reactor includes a vessel having an upper portion and a lower portion. A pressure envelope is formed between an outer wail of the vessel and at least one lower wall of the lower portion of the vessle, and the upper portion of the vessel and the pressure envelope are operatively connected with a pressurization line, such that a pressure of the pressure envelope and a pressure of the upper portion may be equalized.

IPC Classes  ?

• D21C 7/00 - Digesters
• D21C 11/00 - Regeneration of pulp liquors

Abstract

A filter press includes a press frame containing side beams (2) to support filter plates (17) movably along the longitudinal axis of the side beams (2). The filter plates (17) are oriented at right angles to the longitudinal axis of the side beams (2) and connected to one another. A pressure plate (4) can be moved along the longitudinal axis of the side beams (2) by a pushing or pulling device, and which presses the filter plates of the sliding carriage (3) against one another during the filtration process. The pushing or pulling device is mounted on a sliding carriage (3) that can be moved on the side beams (2) along the longitudinal axis of the side beams (2) by a drive unit mounted on the sliding carriage (3).

IPC Classes  ?

• B01D 25/19 - Clamping means for closing the filter press, e.g. hydraulic jacks
• B01D 25/12 - Filter presses, i.e. of the plate or plate and frame type

Abstract

A method to cook thin chips in a continuous digester vessel including: introducing thin chips having a thickness of no more than 6 mm, into a chip bin; adding white (cooking) liquor to the chip bin or to a chip transport passage extending from the chip bin to an upper inlet of the continuous digester vessel; injecting medium pressure steam or another heated fluid to an upper region of the digester vessel to elevate a cooking temperature of the chips in the vessel to at least 130 degrees Celsius; cooking the chips in the vessel as the chips flow downward through the vessel without substantial extraction or introduction of liquor in the cooking section of the vessel; injecting wash liquid to a lower region of the vessel; extracting at least wash liquid through a wash liquid extraction screen in the lower region of the vessel and above the injection of the wash liquid, and discharging the cooked thin chips from the lower region of the vessel.

IPC Classes  ?

• D21C 9/08 - Removal of fats, resins, pitch, or waxes

Goods & Services

Parts of pulp machines; industrial fabrics of plastic for pulp machines; forming fabrics, press fabrics all as parts and fittings for pulp making machines.

Abstract

A pulp dryer (1) is operative for drying a web (2) of pulp by means of hot air in accordance with the air borne web (2) principle and comprises a cooling zone (10) having a length along which the web (2) is made to travel. The cooling zone (10) comprises a plurality of cooling blow boxes (18, 20) being distributed along the length of the cooling zone (10) and being operative for blowing cooling air towards the web (2). Furthermore, the cooling zone (10) comprises at least one liquid supply device (22, 24) being operative for supplying cooling liquid directly onto the web (2).

IPC Classes  ?

• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air
• F26B 13/20 - Supporting materials by fluid jets, e.g. air

Abstract

An upper side for a multiple-layer sheet-forming fabric has a multiplicity of longitudinal threads woven with a multiplicity of transverse threads and thereby form repeats in the longitudinal and transverse directions. The transverse-thread repeat contains three times as many threads as the longitudinal-thread repeat. The longitudinal-thread repeat has at least three threads. The transverse-thread repeat has at least nine threads. All longitudinal threads run alternately over three transverse threads and under three transverse threads, and subsequently under the remaining transverse threads of a transverse thread repeat. Two directly adjacent longitudinal threads are displaced with respect to one another in the longitudinal direction by at least three transverse threads.

IPC Classes  ?

• D21F 1/10 - Wire-cloths
• D21F 7/08 - Felts
• D03D 23/00 - General weaving methods not special to the production of any particular woven fabric or the use of any particular loomWeaves not provided for in any other single group

Abstract

The invention relates to a functional woven material with a flat composite having a woven material made up of warp (1) and weft (3) threads, in particular a metal woven material, comprising at least one support (7) for at least one illuminant (5), accommodated in at least one housing connected to the woven material, characterised in that the at least one housing is formed by a holder (11) which may be clamped to the support (7) and which fixes the same outside the plane of the woven material.

IPC Classes  ?

• F21V 21/088 - ClipsClamps
• F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for
• D03D 15/02 - Woven fabrics characterised by the material or construction of the yarn or other warp or weft elements used the warp or weft elements being of stiff material, e.g. wire, cane, slat
• E04F 13/00 - Coverings or linings, e.g. for walls or ceilings
• F21W 131/107 - Outdoor lighting of the exterior of buildings

Abstract

Filter press with a press framework having lateral tie bars (2) for mounting filter plates (17) movably along the longitudinal axis of the lateral tie bars (2), said filter plates being oriented transversely in relation to the longitudinal axis of the lateral tie bars (2) and connected to one another, wherein a pressure plate (4) which can be moved along the longitudinal axis of the lateral tie bars (2) by means of a pushing or pulling device is provided and presses the filter plates of the carriage (3) against one another during the filtering operation. According to the invention, it is provided here that the pushing or pulling device is arranged on a carriage (3) which can be moved on the lateral tie bars (2), along the longitudinal axis of the lateral tie bars (2), by means of a drive unit arranged on the carriage (3).

IPC Classes  ?

• B01D 25/19 - Clamping means for closing the filter press, e.g. hydraulic jacks

Abstract

The invention relates to a sheet-like composite (10) comprising at least two groups of elements (12, 14) which each have a greater span in their longitudinal direction (22, 24) than in a direction extending transversely to the longitudinal direction (24, 22), wherein the elements (12) of a first group are flexurally rigid and are arranged with their longitudinal direction (22) extending obliquely, and in particular transversely, to the longitudinal direction (24) of the elements (14) of a second group, and wherein at least some of the elements (12) of the first group have a wooden surface constituting a non-metallic surface, characterized in that the sheet-like composition (10) is embodied as a fabric, in that the elements (12) of the first group form the weft of the sheet-like composite (10), and in that the elements (14) of the second group form the warp of said composite.

IPC Classes  ?

• E04F 13/04 - Bases for plaster
• E04F 13/10 - Coverings or linings, e.g. for walls or ceilings composed of covering or lining elementsSub-structures thereforFastening means therefor composed of a plurality of similar covering or lining elements of wood
• E04H 17/14 - Fences constructed of rigid elements, e.g. with additional wire fillings or with posts

Abstract

The invention relates to a drying box for drying a cellulose pulp web. The box has a plurality of fans (3, 5), each fan being driven by a motor (9, 11) and contributing to generate a positive pressure in the drying box interior (7). The shaft between a motor (9) and a fan (3) is provided with a reverse blocking arrangement (19) which prevents the fan from being driven in the reverse direction by the positive pressure in the drying box, in case its motor is not operating.

IPC Classes  ?

• D21C 9/18 - De-watering
• D21F 5/18 - Drying webs by hot air

Goods & Services

Technical fabrics or wire cloth made of metal, particularly for sieves, screens and belts for the use in manufacturing oriented stranded board (OSB), hardboard, particle board, medium density fibres (MDF) and high density fibres (HDF). Technical fabrics or wire cloth made of synthetic material, particularly for sieves, screens and belts for the use in manufacturing oriented stranded board (OSB), hardboard, particle board, medium density fibres (MDF) and high density fibres (HDF).

Abstract

Hydraulic reaction turbine comprising, a runner, a draft tube (1) downstream of the runner, and - injection means (4,10) for introducing water into the draft tube in order to reduce pressure fluctuations therein, with one or more openings (10) in the draft tube wall (1a) adapted to substantially evenly distribute injected water in the axial and/or circumferential direction of the draft tube (1).

IPC Classes  ?

• F03B 3/02 - Machines or engines of reaction typeParts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines

Abstract

Hydraulic reaction turbine comprising a runner; a draft tube (1) downstream of the runner; injection means (4,10) for introducing water into the draft tube in order to reduce pressure fluctuations therein; and control means (6) for the injection of water. The said control means comprise at least one movable element (6) incorporated in said injection means (4,10) and located closely adjacent to the draft tube wall (1a).

IPC Classes  ?

• F03B 3/02 - Machines or engines of reaction typeParts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
• F03B 11/04 - Parts or details not provided for in, or of interest apart from, groups for diminishing cavitation or vibration, e.g. balancing

Abstract

The invention relates to a process for processing wet material, in particular sewage sludge, having a plurality of drying stages. At least one high-temperature drying stage 2 and at least one low-temperature drying stage 10 are provided, wherein the waste heat of the at least one high-temperature drying stage 2 is used for heating the at least one low-temperature drying stage 10. Great savings in energy and economic efficiency can thereby be achieved. In addition, the invention relates to a plant for carrying out the process.

IPC Classes  ?

• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening

Abstract

A method and system to mitigate the pressure fluctuations in hydraulic turbines, operated at partial load, by injecting high velocity control jet (50) or jets of liquid downstream of the turbine runner, on the upper portion of the draft tube (22), along the machine axis; the liquid jet(s) flow rate can be adjusted continuously depending on the pressure fluctuation level in the draft tube, so as to control the swirling flow downstream of the runner and avoid helical vortex breakdown at partial load regimes, thus eliminating the main cause of pressure fluctuations.

IPC Classes  ?

• F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups

Abstract

A device (1) for feeding web material through a processing installation comprises a conveyor belt (28) which has a first segment (30) and a second segment (32). An opening roller and a guiding surface are adapted for unfolding the conveyor belt (28) by means of separating the first and second segments (30, 32). A spreader roll (12) is adapted to keep the conveyor belt (28) unfolded while a tail (58) of said web material is placed on said first segment (30). A folding roll (26) is adapted for folding said second segment (32) over said first segment (30) for to enclose the tail (58) in the conveyor belt (28). The spreader roll (12) comprises a first roll portion, a second roll portion and a circumferential guiding track separating the roll portions. The first roll portion, which is adapted for supporting said first segment (30), has a cylindrical outer surface (16).

IPC Classes  ?

• D21G 9/00 - Other accessories for paper-making machines
• D21F 2/00 - Transferring continuous webs from wet ends to press sections
• D21F 7/00 - Other details of machines for making continuous webs of paper

Abstract

A device (18) for transferring a tail of a cellulose based fibrous web (8) from a first unit to a second unit comprises a separating member (20) , which is adapted to form a space (95) between a first face (96) of the tail (92) and the first unit, a tail pick up pulley (30) which is adapted to be inserted in said space (95) between the first face (96) of the tail (92) and the first unit, the tail pick up pulley (30) further being adapted for moving the tail (92) into a cutting position, a cutting device being adapted for cutting the tail (92) at said cutting position, and a tail conveyor device being adapted for catching the tail cut at the cutting position, and for forwarding the cut tail (92) to the second unit.

IPC Classes  ?

• D21F 7/00 - Other details of machines for making continuous webs of paper
• D21F 1/36 - Guiding mechanisms

Abstract

A papermaking screen, especially for the sheet forming zone, has one paper side and one machine side with a first type of transverse yarns of the paper side and a second type of transverse yarns (25 to 40) of the machine side. The transverse yarns are woven with at least one type of longitudinal yarns (41 to 56). The longitudinal yarns (41 to 56) on the machine side within the machine-side pattern repeat bind two respective transverse yarns of the second type (25, 28; 31, 34; 37, 40). The division of the intersections for the longitudinal yarns is then improved, so that marks in the paper to be produced are prevented to the greatest extent possible.

IPC Classes  ?

• D21F 7/08 - Felts
• D03D 25/00 - Woven fabrics not otherwise provided for

Goods & Services

Technical fabrics made of metal, particularly for surface design. Technical fabrics made of plastics, particularly for surface design.

Goods & Services

Industrial fabrics, at least mainly of metal, for industrial purposes, including as or for conveyor belts and for draining or filtering sludge, and for surface shaping. Machines for the paper industry; parts of machines for the paper industry, including sieves of metal and plastic, sieve rollers, egoutteurs, egoutteur formers and other parts for egoutteur installations, flotation pulp catchers, thickeners, filter drums and worm extruders, and wire cloths, precompression rollers, cylinder moulds; industrial fabrics of metal and/or plastic, being parts of machines; paper sieves, in particular paper-making machine sieves. Industrial fabrics at least mainly of plastic for industrial purposes, including for conveyor belts and for draining or filtering sludge, and for surface shaping.

Goods & Services

(1) Industrial fabrics made of metal used for paper making machines; industrial fabrics made of metal for conveyor belts; sheets and mesh sheets made of metal, namely, for draining and filtering sludge, for surface shaping; machines for the paper industry, namely, paper making machines; parts of paper making machines, namely, paper sieves of metal and plastics, paper sieve rollers, dandy rolls, dandy roll formers and parts for dandy roll installations, flotation pulp catchers, thickener mechanisms, filter drums and worm extruders, wire cloths, pre-compression rollers, cylinder moulds; industrial fabrics made of metal for paper making machines; industrial fabrics made of plastic for paper making machines; paper sieves, namely, paper making machines sieves; industrial fabrics made of plastic for industrial purposes, namely sheets of plastic fabric used for paper making machines, sheets or mesh sheets made of plastic for industrial purposes, namely, for conveyor belts, for draining and filtering sludge, for surface shaping.

Goods & Services

Industrial fabrics at least mainly of metal, for industrial purposes, including for conveyor belts and for draining or filtering sludge, and for surface shaping; paper sieves, in particular paper-making machine sieves. Machines for the paper industry; parts of machines for the paper industry, including filters of metal and plastic, dandy rollers, formers and other parts of dandy roller installations, flotation pulp catchers, thickeners, filter drums and worm extruders, and wire cloths, precompression rollers, cylinder moulds; industrial fabrics of metal and/or plastic, being parts of machines. Industrial tissues at least mainly of plastic for industrial purposes, including for conveyor belts and for draining or filtering sludge, and for surface shaping; paper sieves, in particular paper-making machine sieves.

Goods & Services

Industrial fabricss, at least mainly of metal, for industrial purposes, including as or for conveyor belts and for draining or filtering sludge, and for surface shaping; paper sieves, in particular paper-making machine sieves. Machines for the paper industry; parts of machines for the paper industry, including sieves of metal and plastic, sieve rollers, egoutteurs, egoutteur formers and other parts for egoutteur installations, flotation pulp catchers, thickeners, filter drums and worm extruders, and wire cloths, precompression rollers, cylinder moulds; industrial fabrics of metal and/or plastic, being parts of machines. Industrial fabrics at least mainly of plastic for industrial purposes, including for conveyor belts and for draining or filtering sludge, and for surface shaping; paper sieves, in particular paper-making machine sieves.

Goods & Services

Machines and machine tools, engines (except land vehicles).

Goods & Services

(1) Hydro-electric turbines and components, namely, turbine runners.

Goods & Services

(1) Screw press with perforated screen to separate solids from liquids and parts for the above mentioned goods.

Goods & Services

Parts of machines for the paper-making industry, particularly sieves made of plastic material, dewaterer-molders, flotation save-alls, thickeners, filtering drums and screw presses for dewatering.

Goods & Services

(1) Armoured stator bars.