An EO/EG device and a preparation process. The EO/EG device comprises: a reactor (8), an EO absorption tower (9), and a wound tube heat exchanger (1) having a tube pass and a shell pass; a tube pass inlet connection tube (110) is in communication with a discharging port of the reactor (8); a tube pass outlet connection tube (120) is in communication with a feeding port of the EO absorption tower (9); a shell pass inlet connection tube (170) is in communication with a feeding line (171) for conveying reaction feeds having oxygen and ethylene; and a shell pass outlet connection tube (180) is in communication with a feeding port of the reactor (8).
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 9/22 - Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
C07C 29/10 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
C07D 301/08 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
C07D 303/04 - Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
2.
HEAT EXCHANGE ASSEMBLY FOR HYDROGENATION OF DIESEL AND WAX OIL, AND HYDROGENATION SYSTEM
A heat exchange assembly for hydrogenation of diesel and wax oil, and a hydrogenation system. The heat exchange assembly comprises: a first heat exchanger, wherein an inlet of a first heat medium passage of the first heat exchanger is used for inputting a first-stage reaction effluent, an inlet of a first cold medium passage of the first heat exchanger is used for inputting a first-stage reaction influent, and an outlet of the first cold medium passage of the first heat exchanger is used for outputting the first-stage reaction influent having undergone heat exchange; a second heat exchanger, wherein an inlet of a second heat medium passage of the second heat exchanger is communicated with an outlet of the first heat medium passage, an outlet of the second heat medium passage of the second heat exchanger is used for being communicated with an inlet of a hot high-pressure separation tank, and an inlet of a second cold medium passage of the second heat exchanger is used for inputting a stripping tower bottom liquid; a third heat exchanger, wherein an inlet of a third heat medium passage of the third heat exchanger is used for inputting a second-stage reaction effluent, an inlet of a third cold medium passage of the third heat exchanger is communicated with an outlet of the second cold medium passage, and an outlet of the third cold medium passage of the third heat exchanger is used for being communicated with a downstream apparatus; and a fourth heat exchanger. Compared with the prior art, the present invention can reduce apparatus investment, and improve heat exchange efficiency.
C10G 65/00 - Treatment of hydrocarbon oils by two or more hydrotreatment processes only
C10G 45/02 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
A condensing device, comprising: a first shell-side cylinder extending up and down, the lower end of the first shell-side cylinder being open to serve as a first shell-side outlet for outputting a shell-side medium; a heat exchange tube arranged in the first shell-side cylinder in the axial direction; a second shell-side cylinder extending up and down and at least being fitted over the periphery of the bottom of the first shell-side cylinder; and a condensation supercooling member arranged in the second shell-side cylinder and below the first shell-side cylinder, wherein the condensation supercooling member is provided with a condensation supercooling channel extending up and down; an upper port of the condensation supercooling channel is communicated with the first shell-side outlet; the outer peripheral wall of the condensation supercooling channel is opposite to the inner peripheral wall of the first shell-side cylinder at an interval to form a gap; and a non-condensable gas outlet is formed in the position, above the condensation supercooling member, of the second shell-side cylinder. Compared with the prior art, the present invention has a compact structure and can achieve functions of condensation, supercooling, gas-liquid separation, and liquid storage in a small space.
F28B 1/02 - Condensers in which the steam or vapour is separated from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
4.
TUBE SHEET BUILT-IN TYPE STRUCTURE AND SPIRAL-FLOW TYPE WOUND TUBE HEAT EXCHANGER
The present utility model relates to the technical field of heat exchangers, and disclosed are a tube sheet built-in type structure and a spiral-flow type wound tube heat exchanger. The heat exchanger to which the tube sheet built-in type structure is applicable is provided with a housing, and comprises: a tube sheet provided inside the housing, the tube sheet being not in direct contact with the housing. According to the present utility model, the built-in type tube sheet structure is used, the tube sheet is arranged inside the housing, and the tube sheet is not directly connected to the housing, thereby reducing the longitudinal length of the device and the circumferential outreach dimensions of connecting tubes.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
5.
HEAT EXCHANGER AND POLYSILICON PRODUCTION SYSTEM USING HEAT EXCHANGER
A heat exchanger, comprising: a shell-side cylinder, a gas-solid separation plate, and a plurality of covers. The shell-side cylinder (1) is vertically arranged and the interior thereof is hollow to form a heat exchange cavity; the top of the shell-side cylinder is provided with a shell-side inlet connecting tube, and the bottom of the shell-side cylinder is provided with a shell-side outlet connecting tube; the gas-solid separation plate is transversely arranged in an upper space of the heat exchange cavity and located below the shell-side inlet connecting tube; a plurality of through holes penetrating through the plate in the thickness direction are distributed on the gas-solid separation plate; each cover covers a corresponding through hole, and the periphery of each cover is located on the periphery of the corresponding through hole, such that solid particles can be prevented from entering the through hole; and a gap is left between the periphery of each cover and the top surface of the gas-solid separation plate, and the gap is communicated with the corresponding through hole, such that gas can enter the through hole through the gap. The present application further discloses a polysilicon production system using the heat exchanger. Compared with the prior art, the present application can reduce the blockage risk of solid particles.
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
F28F 9/00 - CasingsHeader boxesAuxiliary supports for elementsAuxiliary members within casings
6.
HEAT EXCHANGE ASSEMBLY FOR HYDROGENATION DEVICE, AND HEAT EXCHANGE PROCESS
A heat exchange assembly for a hydrogenation device, comprising a first heat exchanger. The first heat exchanger is provided with a vertically-arranged shell and a spiral heat exchange pipe which is arranged in the shell and vertically extends; a first shell-side inlet connecting pipe is arranged at the lower portion of the side wall of the shell, a second shell-side inlet connecting pipe is arranged in the middle of the side wall, and a shell-side outlet connecting pipe is arranged at the upper portion of the side wall; and a hydrogen pipeline for conveying hydrogen is connected to the first shell-side inlet connecting pipe, and a raw oil pipeline for conveying raw oil is connected to the second shell-side inlet connecting pipe. The top of the shell is provided with a tube-side inlet connecting pipe communicated with an upper-end pipe opening of the spiral heat exchange pipe; a hot high-pressure separator gas pipeline for conveying hot high-pressure separator gas discharged by a hot high-pressure separation tank of the hydrogenation device is connected to the tube-side inlet connecting pipe; and the bottom of the shell is provided with a tube-side outlet connecting pipe communicated with a lower-end pipe opening of the spiral heat exchange pipe. The present application further discloses a heat exchange process of the heat exchange assembly. Compared with the prior art, the present application can improve heat exchange efficiency.
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
Refrigerating apparatus and machines; air reheaters; gas
condensers, other than parts of machines; heat exchangers,
other than parts of machines; heating apparatus; heating
apparatus for solid, liquid or gaseous fuels; evaporators;
heat regenerators; steam generating installations;
polymerisation installations.
Refrigerating apparatus and machines; air reheaters; gas
condensers, other than parts of machines; heat exchangers,
other than parts of machines; heating apparatus; heating
apparatus for solid, liquid or gaseous fuels; evaporators;
heat regenerators; steam generating installations;
polymerisation installations.
The present utility model relates to the technical field of heat exchangers, and disclosed are a tube sheet built-in type structure and a spiral-flow type wound tube heat exchanger. The heat exchanger to which the tube sheet built-in type structure is applicable is provided with a housing, and comprises: a tube sheet provided inside the housing, the tube sheet being not in direct contact with the housing. According to the present utility model, the built-in type tube sheet structure is used, the tube sheet is arranged inside the housing, and the tube sheet is not directly connected to the housing, thereby reducing the longitudinal length of the device and the circumferential outreach dimensions of connecting tubes.
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
11.
Atmospheric-vacuum heat exchange system having coil-wound heat exchangers, and heat exchange process
An atmospheric-vacuum heat exchange system with a winding-tube heat exchanger, has a first and second heat exchanging group; a primary distillation tower (4) or flash tower; an atmospheric furnace (5); an atmospheric tower (6); a vacuum furnace (7) and a vacuum tower (8); each winding-tube heat exchanger has a shell-pass cylinder (370), a first and second shell-pass connecting tube (371,372), a first and second tube plate (330,340), a plurality of first and second tube box (310,320), a plurality of heat exchange tubes (360) spirally wounded with multiple spiral tube layers; the number of the first and second tube box (310, 320) are respectively N, and each spiral tube layer has N group(s) of the wounded heat exchange tubes (360), N is a natural number greater than or equal to 1. The loss of heat exchanger is reduced.
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
12.
Depolymerization system having coil-wound heat exchanger
A depolymerization system with a tube-wound heat exchanger (4) comprises a heat exchange device for heating a material, having a material output; a gas-liquid separation device (1) having an inlet and a gas output, connected to the material output of the heat exchange device; and a depolymerization device (2) connected to the gas output of the gas-liquid separation device (1); the heat exchange device comprises at least one tube-wound heat exchanger (4). The depolymerization rate is greatly improved and the service period of the whole depolymerization system can be greatly improved.
B01J 19/24 - Stationary reactors without moving elements inside
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
13.
DEPOLYMERIZATION SYSTEM HAVING COIL-WOUND HEAT EXCHANGER
A depolymerization system having a coil-wound heat exchanger (4) comprises: a heat exchange device used to heat a material; a gas-liquid separation device (1) connected to a material output end of the heat exchange device; and a depolymerization reactor (2) connected to a gas output end of the gas-liquid separation device (1). The heat exchange device comprises at least one coil-wound heat exchanger (4). The system has an increased depolymerization rate, and can extend an operating cycle of an apparatus.
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
14.
ATMOSPHERIC-VACUUM HEAT EXCHANGE SYSTEM HAVING COIL-WOUND HEAT EXCHANGERS, AND HEAT EXCHANGE PROCESS
An atmospheric-vacuum heat exchange system having coil-wound heat exchangers, comprising: first and second heat exchanger groups; a preliminary distillation column (4) or a flash column; an atmospheric pressure furnace (5), an atmospheric pressure column (6), a reduced pressure furnace (7), and a reduced pressure column (8). The heat exchangers in the first and/or second heat exchanger group are coil-wound heat exchangers. Each coil-wound heat exchanger comprises: a shell-side cylinder (370); a first shell-side connection tube (371) and a second shell-side connection tube (372); a first tube sheet (330) and a second tube sheet (340); first tube cases (310) and second tube cases (320); and heat exchange tubes (360). The heat exchange tubes (360) are spirally wound, from inside to outside along the axial direction of the shell-side cylinder (370), to form a plurality of layers of spiral tubes, a same layer of spiral tubes being formed by winding a plurality of heat exchange tubes. There are N first tube cases (310) and N second tube cases (320) respectively. The first tube cases (310) are independently distributed on the first tube sheet (330). The second tube cases (320) are independently distributed on the second tube sheet (340). The heat exchange tubes (360) in a same layer of spiral tubes are divided into N groups. The two end portions of each group of heat exchange tubes (360) are respectively distributed in respective corresponding first tube cases (310) and second tube cases (320), wherein N is a natural number greater than or equal to 1. The system can reduce heat loss and can quickly deal with a heat exchange apparatus in which a fault occurs.
C10G 53/00 - Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
Provided are an atmospheric distillation column overhead oil-gas heat exchange apparatus and heat exchange method, the heat exchange apparatus comprising: a heat exchanger shell (11), an upper tube sheet (16), a lower tube sheet (17), and a heat exchange tube (5). The bottom of the shell (11) is provided with a tube-side inlet (13), and the top of the shell (11) is provided with a tube-side outlet (18). An upper portion of the shell (11) is provided with a shell-side inlet (12) connected to an atmospheric distillation column overhead oil-gas pipeline (2), and a lower portion of the shell (11) is provide with a shell-side outlet (14). A water injection coil pipe (6) is further configured in the upper portion of the shell (11), and is provided thereon with a plurality of water ports (61) interconnected with an interior of the shell (11). The atmospheric distillation column overhead oil-gas pipeline (2) is connected to an external water injection pipeline (3) via a first water injection pipeline (31) and a third water injection pipeline (33). The first water injection pipeline (31) and the third water injection pipeline (33) are respectively provided with a first solenoid valve (34) and a second solenoid valve (35) thereon. The water injection coil pipe (6) is connected to the external water injection pipeline (3) via a second water injection pipeline (32). In the heat exchange apparatus, first and second water streams are continuously injected into a shell side in specific proportions, and a third water stream is intermittently injected into the shell side in a mass flow, thereby flushing out aged scale in the shell side, and preventing the heat exchanger from blocking and corroding.
F28D 7/04 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
A heat exchange, which includes a casing having a cylinder; two connectors respectively attached to one end of the cylinder through the small opening; two convex heads respectively connected through the opening end to the large opening of a connector; a core disposed inside the casing; and two heat transfer medium passages. In this way, the space at the ends of the casing of the heat exchanger may be enlarged, thereby providing a space large enough to accommodate the construction personal and better working environment for two-side welding and future maintenance and wider selection range of material of the casing of the heat exchanger; a buffer area is provided for the flow of the heat transfer medium, and the auxiliary like baffles may be mounted inside the convex heads as required to further improve the heat exchange efficiency and reduce the cost.
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
A heat exchanger structure comprises a closed shell (1) and multiple heat exchange pipes (3) provided in the shell. The two ends of each heat exchange pipe are limited on a first pipe sheet and a second pipe sheet (13) respectively, and the first pipe sheet and the second pipe sheet are provided in the shell in parallel. Each heat exchange pipe forms a multi-layer helical tube, the layers of the helical tube are successively and mutually sleeved at a spacing, a first air pipe (4) is codirectionally spiraled and coiled in each layer of the helical tube, the pipe wall, facing the bottom of the shell, of each first air pipe is distributed with multiple first gas vents (41), and the gas inlet and the gas outlet of each first gas vent both communicate with the external gas source. By using the heat exchange structure, the fluid in the shell can be completely disturbed from the inside; and even if the fluid medium is dirty and sticky and even the inter-tube spacing and inter-layer spacing are both compact, the fluid medium can also be stirred toward evenness, thereby effectively avoiding that the fluid is deposited in the shell, enhancing the heat transfer efficiency, improving the heat exchange effect, and facilitating the cleaning, purging and maintenance of the device.
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
F28G 9/00 - Cleaning by flushing or washing, e.g. with chemical solvents
A heat exchanger, comprising a shell and core (6) and a shell side medium inlet/outlet (3) arranged on the shell; the shell also comprises a cylinder (1) and a convex sealing head (2); a reducing pipe (4) having two ends of unequal diameter is arranged between said cylinder and said convex sealing head, the large-diameter end (43) of said reducing pipe being fixed to said convex sealing head and the small-diameter end (42) of said reducing pipe being fixed to said cylinder; the shell side medium inlet/outlet arranged on the convex sealing head. Using the described structure allows the ends of the heat exchanger ample space to accommodate workers, creating the conditions for double-sided welding, testing, and maintenance, and effectively reducing manufacturing costs and expanding the range of selection of materials; said structure also provides a buffer zone for the flow of the shell side medium, making heat exchange more uniform and complete, and facilitating the arrangement of deflectors and other auxiliary bodies, improving the heat exchange efficiency of the heat exchanger and lowering operation costs.
F28F 9/00 - CasingsHeader boxesAuxiliary supports for elementsAuxiliary members within casings
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
19.
COOLER FOR FEED GAS OF LOW-TEMPERATURE METHANOL WASHING
A cooler for a feed gas of low-temperature methanol washing, comprising a heat exchanger consisting of a first heat exchanger (1) and a second heat exchanger (2). The first heat exchanger (1) comprises a first casing (11) and a first heat exchange tube (12) located inside the first casing (11) and supported by a first tube sheet. The first casing (11) is provided with a feed gas inlet (g1) and a feed gas outlet (g2), as well as heat transfer medium inlets (f1, f2, b1, b2) and heat transfer medium outlets (a1, a2, e1, e2) connected to both ends of the first heat exchange tube (12). The second heat exchanger (2) comprises a second casing (21) and a second heat exchange tube (22) located inside the second casing (21) and supported by a second tube sheet. The second casing (21) is provided with feed gas inlets (d1-d4) and feed gas outlets (c1-c4) respectively connected to both ends of the second heat exchange tube (22), as well as a heat transfer medium inlet (h1) and a heat transfer medium outlet (h2). A relatively thin plate can be used for the second casing (21) of the cooler and the tube sheet thereof, and the invention is therefore able to save on materials and reduce the cost of the cooler while satisfying the requirements of the production process.
F28D 1/06 - 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 forming part of, or being attached to, the tank containing the body of fluid
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
C10K 1/18 - Purifying combustible gases containing carbon monoxide by washing with liquidsReviving the used wash liquors with non-aqueous liquids hydrocarbon oils
C10L 3/00 - Gaseous fuelsNatural gasSynthetic natural gas obtained by processes not covered by subclasses , Liquefied petroleum gas
