According to this method, exhaust fumes from an engine of a marine vessel enter the lower part of a scrubber (100) and flow upward inside the scrubber. The fumes flowing in the scrubber are distributed substantially homogeneously over the cross-section of the scrubber (100) by a distributing device (400), which is arranged inside the scrubber and which includes a body (401) provided with perforations (402) connecting an upper face (401A) of the body, which is inclined relative to the horizontal, and a lower face (401B) of the body, which is reached by the fumes rising in the scrubber from the lower part of the scrubber. Water is spread inside the scrubber (100) in the form of a rain (P), which falls toward the bottom of the scrubber onto the upper face (401A) of the body (401) and which, once it has fallen in the upper face of the body, streams there while forming a water film (F) covering the upper face of the body, including at least partially the upper mouth of the perforations (402) of the body. The fumes flowing in the scrubber (100) flow in the perforations (402) of the body (401) with a velocity of between 5 and 25 m/s when the average velocity of these fumes upstream and downstream from the body is between 3 and 7 m/s, such that the flow of the fumes in the perforations prevents the water of the water film (F) from flowing in the perforations and the meeting between the flow of the fumes leaving the perforations and the water of the water film streaming over the upper face (401A) of the body from generating jets (J) sprayed above the body from the upper face of the body.
This protection device (10) is suitable for being arranged inside a scrubber and including an apical body (11) which, when the protection device is installed in the scrubber, is placed above the downstream mouth of a vertical duct for admitting fumes into the scrubber, so as to protect the duct against the introduction of water while allowing the fumes leaving the duct to pass. In order for this protection device to perform particularly well, an upper face (12) of the apical body is provided with water collection channels (14), which each extend lengthwise from a central region (11 A) of the apical body, around which the channels are distributed, to a periphery (11 B) of the apical body, which is completely occupied by the channels. Each channel has, over its entire length, a cross-section that is substantially triangular and whereof the lower apex defines a bottom edge (15) along the channel. The respective bottom edges of the channels rest on a conical surface that converges upwards and the apical angle of which is between 90 and 170°.
B01D 3/16 - Fractionating columns in which vapour bubbles through liquid
B01D 3/20 - Bubble capsRisers for vapourDischarge pipes for liquid
B01D 47/02 - Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
B01D 47/12 - Washers with plural different washing sections
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
In order to effectively, inexpensively and easily remove mercury from gaseous effluents, the invention proposes a mercury-removal method in which a reagent for capturing mercury (3), which consists of a sulfur-containing compound and an alkali metal compound, is injected in liquid form into a gaseous stream (2) having a temperature higher than 140°C, by being atomised therein in the form of droplets inside a cloud (5) of solid particles (4) having a concentration between 1 g/Nm3and 10 g/Nm3, so that, by evaporation of the water contained in the droplets placed in contact with the gaseous stream, the droplets produce microparticles in which, at the same time, the sulfur-containing compound of the solution forms sulfur-containing nuclei, capable of fixing the mercury present in the gaseous stream, and the alkali metal compound of the solution forms alkali metal nuclei which are adhesive and/or which have a strong affinity for the sulfur-containing nuclei and the solid particles of the cloud.
In order to effectively, inexpensively and easily remove mercury from gaseous effluents, the invention proposes a method for removal of mercury, wherein a reagent for capturing mercury (3), which is made up of a solution of a bicarbonate and a sulfide, is injected in liquid form into a gaseous stream (2) having a temperature greater than 140°C, preferably between 170ºC and 220ºC, so that dry grains, resulting from evaporation of the water of the solution followed by thermal decomposition of the bicarbonate of the solution into carbonate, have a large specific surface area on which the sulfide initially present in the solution is distributed in order to bond with and thus capture the mercury present in the gaseous stream.
CONSTRUCTIONS INDUSTRIELLES DE LA MÉDITERRANÉE - CNIM (France)
Inventor
Siret, Bernard
Tabaries, Frank
Abstract
This device (1) is provided for cleaning smoke removal equipment (2) having a globally planar free surface (2A) and through which smoke to be cleaned flows during the use of the smoke removal equipment. In order for this cleaning to be effective, cost- effective and easy to carry out, the device includes bars (10) for dispensing a pressurized fluid, which extend lengthwise substantially parallel to one another, while being distributed transversely to the longitudinal direction, and which are suitable, during use, for being arranged across from the free surface of the smoke removal equipment, while being located at a distance (D) from this free surface that is comprised between 120 and 400 mm. Each bar is provided with elements (11, 12) that are distributed along the length of the bar and which, during use, emit fluid jets (J11, J12) that are each centered on an axis (Z11, Z12) and that are intended to clean the free surface of the smoke removal equipment, each of these elements being suitable for orienting its fluid jet such that the axis of the fluid jet forms an angle (a) comprised between 15 and 35° relative to the free surface of the smoke removal equipment.
F01N 3/05 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
F01N 3/34 - Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 1/14 - Silencing apparatus characterised by method of silencing by adding air to exhaust gases
This reactor (1) comprises an elongate trough (10), which defines a reactivation chamber (C) extending in a longitudinal direction (D) from a first end of the trough to a second end (10B) of the trough. The reactor also comprises two shafts (20), which are arranged in the reactivation chamber and which extend therein parallel to one another in the longitudinal direction, each of the two shafts successively comprising a first part (20C), provided with a coil (21) for conveying solids, a second part (20D), provided with blades (23) for mixing solids, the length of the first part (20C) representing between 10% and 33% of the sum of the respective lengths of the first and second parts. The reactor also comprises a duct (40) for distributing a gaseous reactivation fluid, which is arranged in the reactivation chamber at bottom of the trough, which extends in the longitudinal direction (D) while running below at least the second part of the two shafts, and which is provided with one or several intake orifices (42) for entering the gaseous reactivation fluid into the reactivation chamber. This reactor is simple, cost-effective and high-performing, in particular to reactivate solids resulting from the treatment of fumes.
B01J 8/10 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles
B01J 19/20 - Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
B01J 8/38 - 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 containing a rotatable device or being subject to rotation
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
B01D 53/96 - Regeneration, reactivation or recycling of reactants
7.
METHOD FOR CLEANING LIQUID EFFLUENTS OF A WET SCRUBBER TREATING EXHAUST FUMES EMITTED BY A DIESEL ENGINE
For simple, compact and economical cleaning of liquid effluents (4) from a wet scrubber (WS) treating exhaust fumes (1) emitted by a diesel engine (E), the invention provides that: - solid particles (7), containing between 25 and 75 % by weight of activated carbon and between 25 and 60 % by weight of cement and having a mean size of between 30 μm and 500 μm, are placed in the scrubber (WS), and - the effluents to be cleaned (4), on leaving the scrubber (WS), are sent to a solid-liquid separator (SLS) where the effluents are separated into a clear fraction (5) and a sludge (6) containing the solid particles (7).
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
B01D 21/26 - Separation of sediment aided by centrifugal force
The device has a vertical flue (30) for conveying the fumes (F), which passes through a bottom wall (2) of the scrubber (1) and includes, in its lower portion, a sleeve (31) made of a material that withstands temperatures of at least 350°C, arranged outside the scrubber. In order to limit salt encrusting in the device, the flue includes, in its upper portion, a multiple-walled pipe (32). The pipe includes both an inner wall (32.1), which is made of a material that withstands temperatures of at least 350° C, and an outer wall (32.2) separated from the inner wall by an insulating member (32.3). Moreover, the pipe is at least partially arranged inside the scrubber, and extends lengthwise over at least 300 mm in an upward direction from the bottom wall of the scrubber.
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
F01N 13/12 - Exhaust or silencing apparatus characterised by constructional features specially adapted for submerged exhausting
F01N 13/14 - Exhaust or silencing apparatus characterised by constructional features having thermal insulation
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
10.
METHOD AND FACILITY FOR WET DESULPHURISATION OF THE EXHAUST FUMES OF AN ENGINE OF A SEA SHIP
According to this method, the fumes to be desulphurised (1) are conveyed into a scrubber (100) via a vertical chimney (200) that opens at the bottom (101) of the scrubber, substantially in the centre of same. The fumes flow upwards inside the scrubber so as to be brought into contact with first (3) and second (4) scrubbing liquids intended to capture the sulphur dioxide contained in the fumes. In order for the velocity profile of said fumes to be as flat as possible inside the scrubber, they meet successively therein: - a rotation device (400) that is traversed by the fumes (1), rotating them inside the scrubber (100), - a protection device (300) that protects the downstream outlet (201) of the chimney against the entry of liquid while maintaining the flow of fumes, - a spraying device (500), that sprays the first scrubbing liquid (3), in the form of at least one pair of liquid curtains, from a central region of the scrubber (100), through which a central geometric axis (Z100) of the scrubber passes, to the peripheral wall (102) of the scrubber, the liquid curtains of the or each pair being sprayed, from the spraying device, on either side of a same horizontal plane (H) associated with said pair, then - a distribution device (600) that distributes the second scrubbing liquid (4) in the form of a rain falling downwards in a free space (V100) of the scrubber, which extends from the spraying device to the distribution device and inside which the fumes flow freely, said distribution device comprising at least one stage of distributors (601) that are located at a same height, being distributed over the cross-section of the scrubber associated with said height, and that respectively distribute a corresponding fraction of the rain.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
This device (10) comprises a fume circulation casing (16) inside which there are integrated both a filter (12) having vertical filter bags (18) and a channel-structured catalyst (14), the channels of the catalyst having a hydraulic diameter of less than 6 mm, the fumes to be cleaned (1 ) passing through the filter bags and then the catalyst. Inside the casing, the catalyst is positioned above the outlet of the filter bags and is divided into unit elements (22) that are placed horizontally side by side inside the casing and are vertically removable from the casing. This purifying device is made compact, economical, practical and efficient by distancing the catalyst from the outlet of the filter bags by a vertical distance (d) of between 2.5 and 6 times the hydraulic diameter of the filter bags, and the unit elements are positioned side by side inside the casing being arranged successively in several rows in a horizontal direction (X), each unit element being equipped with moving means (24) for moving the corresponding unit element in this horizontal direction relative to the casing.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (France)
LAB SA (France)
Inventor
Farrusseng, David
Aguado, Sonia
Nicolas, Charles-Henri
Siret, Bernard
Durecu, Sylvain
Abstract
The invention relates to a porous composite material comprising a porous inorganic substrate forming a solid support and a porous inorganic solid phase of the molecular sieve type, characterized in that the predominantly crystalline solid porous phase consists of a continuous layer of coordination polymer which comprises at least one imidazolate or triazolate ligand bonded to cations (M) and which is supported by the solid porous inorganic substrate. The invention also relates to a process for preparing these materials and to the use thereof, especially as a membrane.
B01D 53/00 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Installation, upkeep, maintenance, repair of industrial
furnaces; information in the field of installation, upkeep,
maintenance, repair of industrial furnaces; technical
support in case of malfunctioning of industrial furnaces;
installation, upkeep, maintenance, repair of equipment for
treating flue gas from incineration factories; information
in the field of installation, upkeep, maintenance, repair of
equipment for treating flue gas from incineration factories;
technical support in case of malfunctioning of equipment for
treating flue gas from incineration factories. Professional training in the field of combustion of flue gas
and industrial furnaces; professional training in the field
of treatment of flue gas. Technical consulting in the field of construction,
maintenance, improvement, securement and modernisation of
industrial furnaces; performance audits of industrial
furnaces; scientific control, technical control of upgrading
to standards, modernisation, adaptation of industrial
furnaces; design of industrial furnaces; information
services, consulting services and support services in the
field of combustion of flue gas and industrial furnaces;
scientific consulting, technical consulting, research and
development, technical, scientific, chemical analysis,
project studies, quality control, industrial design,
technical compliance, all these services provided in the
field of combustion of flue gas and industrial furnaces;
technical consulting in the field of construction,
maintenance, improvement, securement and modernisation of
equipment for treating flue gas from incineration factories;
performance audits of equipment for treating flue gas from
incineration factories; technical control, scientific
control of upgrading to standards, modernisation, adaptation
of equipment for treating flue gas from incineration
factories; design of equipment for treating flue gas from
incineration factories; information services, consulting
services and support services, technical consulting,
scientific consulting, research and development, technical,
scientific, chemical analysis, project studies, quality
control, industrial design, technical compliance, all these
services provided in the field of treating flue gas from
incineration factories.
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Installation, upkeep, maintenance and repair of industrial
furnaces; information regarding the installation, upkeep,
maintenance and repair of industrial furnaces; technical
assistance (consulting) for the repair of industrial
furnaces; installation, upkeep, maintenance and repair of
equipment for treating fumes from incineration plants;
information regarding the installation, upkeep, maintenance
and repair of equipment for treating fumes from incineration
plants; technical assistance (consulting) for the repair of
equipment for treating fumes from incineration plants. Vocational training in the field of burning off fumes and
industrial furnaces; vocational training in the field of
treating fumes. Technical consulting in the field of building, maintaining,
improving, securing and modernising industrial furnaces;
auditing the functioning of industrial furnaces, namely:
evaluations, assessments and research in the scientific and
technological fields provided by engineers; technical
monitoring of the upgrading, modernisation and adaptation of
industrial furnaces; scientific monitoring of the upgrading,
modernisation and adaptation of industrial furnaces, namely
evaluations, assessments and research in the scientific and
technological fields provided by engineers; design of
industrial furnaces; information, consultancy and technical
assistance services as regards the design, modernisation,
upgrading and optimisation of the functioning of equipment
for burning off fumes and industrial furnaces; technical and
scientific consultancy, technical and scientific analyses,
ensuring technical compliance, namely evaluations,
assessments and research in the scientific and technological
fields provided by engineers; research and development,
chemical analyses, technical project studies, quality
control, services of an industrial designer, all these
services in the field of burning off fumes and industrial
furnaces; technical consultancy as regards the construction,
maintenance, improvement, securing and modernising of
equipment for treating fumes from incineration plants;
auditing the functioning of equipment for treating fumes
from incineration plants, namely evaluations, assessments
and research in the scientific and technological fields
provided by engineers; technical monitoring of the
upgrading, modernisation and adaptation of equipment for
treating fumes from incineration plants; scientific
monitoring of the upgrading, modernisation and adaptation of
equipment for treating fumes from incineration plants,
namely evaluations, assessments and research in the
scientific and technological fields provided by engineers;
designing equipment for treating fumes from incineration
plants; information, consultancy and technical assistance
services as regards the design, modernisation, upgrading and
optimisation of the functioning of equipment for treating
fumes; technical and scientific consultancy, technical and
scientific analyses, ensuring technical compliance, quality
control, namely evaluations, assessments and research in the
scientific and technological fields provided by engineers;
all these services in the field of treating fumes from
incineration plants; research and development, chemical
analyses, technical project studies, services of an
industrial designer; all these services with regard to
treating fumes from incineration plants.
Installations and apparatus for cleaning (separation of
matter in particulate state or matter in gaseous state) air
and gases particularly dioxins and furans originating from
industrial processes and containing organic compounds.
apparatus for the cooling or cleaning (removal of particulate matter or of gaseous matter) of air streams and gas streams before emission into the atmosphere or use in an industrial processes
