CN118079848A - Radial flow reaction coupling membrane reactor - Google Patents
Radial flow reaction coupling membrane reactor Download PDFInfo
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- CN118079848A CN118079848A CN202410372710.0A CN202410372710A CN118079848A CN 118079848 A CN118079848 A CN 118079848A CN 202410372710 A CN202410372710 A CN 202410372710A CN 118079848 A CN118079848 A CN 118079848A
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- Prior art keywords
- reactor
- reaction
- radial flow
- partition plates
- membrane
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 114
- 239000012528 membrane Substances 0.000 title claims abstract description 52
- 230000008878 coupling Effects 0.000 title abstract description 8
- 238000010168 coupling process Methods 0.000 title abstract description 8
- 238000005859 coupling reaction Methods 0.000 title abstract description 8
- 238000005192 partition Methods 0.000 claims description 53
- 230000000903 blocking effect Effects 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 3
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
- 239000011147 inorganic material Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 229910003471 inorganic composite material Inorganic materials 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a radial flow reaction coupled membrane reactor, which comprises a reactor, wherein a vertical cylindrical pipe is penetrated on the middle part of the reactor, two ends of the cylindrical pipe extend out of the reactor, a baffle plate is symmetrically arranged on the upper and lower sides of an inner cavity of the reactor, the inner cavity of the reactor is divided into an upper air inlet area, a middle reaction area and a lower air inlet area by an upper baffle plate and a lower baffle plate, through holes for communicating the middle reaction area with a pipeline in the cylindrical pipe are densely distributed on the pipe wall of a pipe section between the upper baffle plate and the lower baffle plate, and the middle reaction area is divided into even reaction areas by a plurality of vertical membranes distributed around the cylindrical pipe. The invention realizes the coupling of the endothermic reaction and the exothermic reaction. The heat generated by the exothermic reaction can directly provide the required energy for the endothermic reaction, thereby remarkably improving the energy utilization efficiency. The design not only reduces the energy consumption, but also helps to reduce the environmental pollution.
Description
Technical Field
The invention belongs to the field of chemical equipment, and particularly relates to a radial flow reaction coupling membrane reactor.
Background
The radial flow reactor is a reactor with the gas flow direction perpendicular to the axial direction of the equipment, and is mainly used for gas-solid catalytic reaction and non-catalytic reaction. When the reaction gas flows through the particle bed layer of the radial reactor, the flow cross section area is large, the flow velocity is low, the flow passage is short, and the pressure drop is low. This feature allows the use of small particles of catalyst or solid phase reactants, thereby increasing the reaction rate and throughput of the reactor.
In chemical production, endothermic reactions and exothermic reactions are two common types of chemical reactions. Conventional reactors typically employ separate treatments for both reactions, i.e., endothermic and exothermic reactions using separate reactors. This approach not only increases capital and maintenance costs of the equipment, but also results in inefficient energy utilization as the heat is not efficiently utilized. In addition, in order to maintain the stability of the reaction process, additional cooling or heating equipment is often required, the investment and maintenance costs of the equipment are increased, and the energy consumption and environmental pollution are further increased.
Conventional chemical reactors typically focus only on the reaction itself, and ignore by-products or impurities that may be produced during the reaction. These byproducts or impurities may not only affect the purity of the product, but may also negatively impact the performance and lifetime of the reactor. The membrane reactor combines the membrane process and the reaction process, and realizes the combination of reaction and separation, thereby timely removing products or impurities in the reaction process and improving the selectivity and the yield of the products. In addition, the membrane reactor has the ability to break through thermodynamic equilibrium limitations. In some reversible reactions, the conversion is often not high due to thermodynamic equilibrium limitations. While membrane reactors remove product by the membrane diffusion process, this equilibrium limit can be broken, bringing the conversion to nearly 100%.
Disclosure of Invention
In view of this, the present invention proposes a radial flow reaction coupled membrane reactor, which combines the advantages of radial flow and membrane technology, and aims to improve the efficiency and energy utilization rate of industrial production.
The invention is realized by adopting the following scheme: the utility model provides a radial flow reaction coupling's membrane reactor, includes the reactor, wear to be equipped with vertical cylinder pipe on the reactor middle part, the both ends of cylinder pipe run through the reactor and stretch out, the upper and lower symmetry is provided with the baffle in the inner chamber of reactor, upper and lower two baffles separate the inner chamber of reactor into upper portion air inlet region, middle part reaction zone, lower part air inlet region, the cylinder pipe is located the through-hole of intercommunication middle part reaction zone and cylinder intraductal pipeline densely covered on the pipe wall of the pipeline between the baffle about, the middle part reaction zone is separated into even number reaction zone through a plurality of vertical membrane that distributes round the cylinder pipe, the cylinder pipe is located the pipeline section of middle part reaction zone and is separated into even number branch channel through the membrane corresponds the reaction zone, the pipeline section tip that the cylinder pipe is located the middle part reaction zone corresponds the baffle and sets up the passageway baffle.
Further, the top and the bottom of the reactor are respectively provided with an air inlet pipe communicated with the upper air inlet area and the lower air inlet area.
Further, a compressor is connected to an input end of an air inlet pipe.
Further, the upper partition plate consists of at least one upper fan-shaped partition plate group, the number of the upper fan-shaped partition plates is half of that of the reaction areas, and the upper fan-shaped partition plates are blocked at intervals at the tops of the corresponding reaction areas.
Further, the partition plate at the lower part is composed of at least one lower fan-shaped partition plate group, the number of the lower fan-shaped partition plates is half of that of the reaction area, and the lower fan-shaped partition plates are blocked at the bottom of the reaction area where the upper fan-shaped partition plates are not installed.
Further, the upper channel partition plates are upper blocking partition plates which are arranged corresponding to the upper sector partition plates, and the upper blocking partition plates are blocked at the tops of the corresponding branch channels at intervals in a staggered manner.
Further, the lower channel partition plates are lower blocking partition plates which are arranged corresponding to the lower fan-shaped partition plates, and the lower blocking partition plates are blocked at the bottoms of the branch channels where the blocking partition plates are not installed.
Further, one side of the membrane is connected with the outer wall of the cylindrical tube, and the other side is connected with the inner wall of the reactor.
Further, the membrane is made of an organic material, an inorganic material or a composite material.
Compared with the prior art, the invention has the following beneficial effects: 1. the membrane reactor realizes the coupling of endothermic reaction and exothermic reaction. The heat generated by the exothermic reaction can directly provide the required energy for the endothermic reaction, thereby remarkably improving the energy utilization efficiency. The design not only reduces the energy consumption, but also is beneficial to reducing the environmental pollution; 2. compared with the traditional method for respectively treating the endothermic reaction and the exothermic reaction, the membrane reactor adopts a single reactor to treat the two reactions simultaneously, thereby remarkably reducing the number of equipment and the occupied area. Not only reduces investment cost, but also simplifies operation and maintenance procedures; 3. the membrane reactor can optimize the feed gas delivery and reaction by the selective permeability of the membrane. This helps to increase the selectivity and yield of the product while reducing the formation of byproducts or impurities; 4. the whole inner area of the membrane reactor and the central cylindrical tube can be divided to different degrees according to the thermal effects of different reactions. This design provides greater flexibility to accommodate different types of reactions and operating conditions; 5. the membrane reactor has the advantages of large flow cross section, small flow velocity and short flow passage, so that the membrane reactor has lower pressure drop. This helps to reduce energy consumption and increase the capacity of the reactor.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention (four reaction zones arranged in a uniform distribution);
FIG. 2 is a schematic representation of the structure of the present invention (four reaction zones arranged in a non-uniform distribution or 8 reaction zones distributed uniformly).
In the figure: 1-a reactor; 2-a cylindrical tube; 3-a separator; 4-an upper intake zone; 5-a middle reaction zone; 6-a lower intake zone; 7-reaction zone; 8-branch channels; 9-upper sector baffle; 10-lower sector baffle; 11-upper blocking baffle; 12-lower blocking baffle; 13-membrane; 14-a compressor; 15-channel separator.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1, a radial flow reaction coupled membrane reactor comprises a reactor 1, wherein a vertical cylindrical tube 2 is penetrated on the middle part of the reactor, two ends of the cylindrical tube extend out of the reactor, a partition plate 3 is symmetrically arranged in the upper and lower parts of an inner cavity of the reactor, the inner cavity of the reactor is divided into an upper air inlet area 4, a middle reaction area 5 and a lower air inlet area 6 by an upper partition plate and a lower partition plate, through holes for communicating the middle reaction area with pipelines in the cylindrical tube are densely distributed on the pipe wall of the pipe section between the upper partition plate and the lower partition plate, the middle reaction area is divided into even reaction areas 7 by a plurality of vertical membranes 13 distributed around the cylindrical tube, the pipe section of the cylindrical tube positioned in the middle reaction area is divided into even branch channels 8 by the corresponding reaction areas of the membranes, and the end part of the pipe section of the cylindrical tube positioned in the middle reaction area is provided with a channel partition plate 15 corresponding to the partition plate; the top and the bottom of the reactor are respectively provided with an air inlet pipe communicated with the upper air inlet area and the lower air inlet area; the input end of one air inlet pipe is connected with a compressor 14, and when the device is used, the first reaction raw material gas and the second reaction raw material gas respectively enter from the two air inlet pipes, flow inwards to respective reaction areas along the radial direction, and flow out from respective outlets guided by the cylindrical pipes; the membrane not only has chemical stability and thermal stability, but also has selective permeability, can complete effective transportation and distribution of raw material gas and heat, and the reaction area is filled with corresponding catalyst, and simultaneously the compressor for increasing pressure can improve the membrane separation performance, and can exacerbate the reaction degree of two reactions.
In this embodiment, even reaction areas are staggered at intervals to perform endothermic and exothermic reactions, coupling of the endothermic reactions and the exothermic reactions is achieved through the membrane reactor, heat generated by the exothermic reactions is utilized to provide required energy for the endothermic reactions, and energy utilization efficiency is improved.
In the embodiment, the upper partition plate consists of at least one upper fan-shaped partition plate 9 group, the number of the upper fan-shaped partition plates is half of that of the reaction areas, and the upper fan-shaped partition plates are blocked at intervals at the tops of the corresponding reaction areas; the partition board at the lower part is composed of at least one lower fan-shaped partition board 10, the number of the lower fan-shaped partition boards is half of that of the reaction area, the lower fan-shaped partition boards are plugged at the bottom of the reaction area where the upper fan-shaped partition boards are not installed, namely, the arrangement modes of the partition boards on the reaction area are as follows: an upper sector baffle is arranged in one reaction area, a lower sector baffle is arranged in the adjacent reaction area, and the upper sector baffle and the lower sector baffle are not arranged in the same reaction area.
In this embodiment, the channel separator at the upper part is an upper blocking separator 11 arranged corresponding to a plurality of upper sector separators, the upper blocking separators are blocked at intervals and staggered at the tops of corresponding branch channels, the channel separator at the lower part is a lower blocking separator 12 arranged corresponding to a plurality of lower sector separators, and the lower blocking separator is blocked at the bottoms of branch channels where the upper blocking separator is not installed, namely, the arrangement form of the separators of the branch channels is as follows: an upper blocking baffle is arranged on one of the branch channels, a lower blocking baffle is arranged on the adjacent branch channel, and the upper blocking baffle and the lower blocking baffle are not arranged on the same branch channel.
In this embodiment, as shown in fig. 2, the membrane is divided into an even number of reaction areas, which may be of uniform size or non-uniform size, and the number of the reaction areas may be 2, 4, 6, 8, etc., and at the same time, the even number of reaction areas are formed by alternately arranging two different chemical reaction intervals, the reaction areas of the same chemical reaction are communicated, and the reaction areas of different chemical reactions are separated from the separator and the channel separator by the membrane.
In this embodiment, the membrane is made of an organic material, an inorganic material or a composite material, and may be a palladium alloy membrane.
In this embodiment, for reasonable design, one side of the membrane is connected to the outer wall of the cylindrical tube and the other side is connected to the inner wall of the reactor.
In this embodiment, the coupling of the ammonia decomposition reaction and the hydrogen combustion reaction is realized through the membrane reactor, the ammonia decomposition reaction generates hydrogen required by the hydrogen combustion reaction, the heat generated by the hydrogen combustion reaction is used for the ammonia decomposition reaction and providing required energy, the energy utilization efficiency is improved, and the air inlet pipe with the compressor is connected with an external ammonia raw material gas cylinder. The inlet pipe without a compressor is connected with an external oxygen raw material gas bottle, namely, the reactant of the other reaction exists in the product of the reaction, and the membrane has adjustable selective permeability to the substance so as to optimize the conveying of raw material gas and the reaction.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
If the invention discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, the orientation or positional relationship indicated by the terms used to indicate positional relationships such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. applied to any of the above-described technical aspects of the present disclosure are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present patent, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present patent, and the terms used to indicate shapes applied to any of the above-described technical aspects of the present disclosure include shapes that are approximated, similar or close thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. A radial flow reaction coupled membrane reactor, characterized by: the reactor comprises a reactor, wear to be equipped with vertical cylinder pipe on the reactor middle part, the reactor is stretched out in the both ends of cylinder pipe, upper and lower symmetry is provided with the baffle in the inner chamber of reactor, and upper and lower two baffles separate the inner chamber of reactor into upper portion air inlet zone, middle part reaction zone, lower part air inlet zone, the cylinder pipe is located the through-hole that has intercommunication middle part reaction zone and cylinder intraductal pipeline densely covered on the pipe wall of the pipeline section between upper and lower baffle, the even number reaction zone is separated into through the membrane that a plurality of is vertical round cylinder pipe distributes to the middle part reaction zone, even number branch passageway is separated into through the membrane correspondence reaction zone in the pipeline section that the cylinder pipe is located the middle part reaction zone, the pipeline section tip that the cylinder pipe is located the middle part reaction zone corresponds the baffle and sets up the passageway baffle.
2. The radial flow reaction coupled membrane reactor of claim 1, wherein; and the top and the bottom of the reactor are respectively provided with an air inlet pipe communicated with the upper air inlet area and the lower air inlet area.
3. The radial flow reaction coupled membrane reactor of claim 2, wherein; the input end of one air inlet pipe is connected with a compressor.
4. The radial flow reaction coupled membrane reactor of claim 1, wherein; the upper partition plate consists of at least one upper fan-shaped partition plate group, the number of the upper fan-shaped partition plates is half of that of the reaction areas, and the upper fan-shaped partition plates are blocked at intervals at the tops of the corresponding reaction areas.
5. The radial flow reaction coupled membrane reactor of claim 4 wherein; the partition board at the lower part consists of at least one lower fan-shaped partition board group, the number of the lower fan-shaped partition boards is half of that of the reaction area, and the lower fan-shaped partition boards are blocked at the bottom of the reaction area where the upper fan-shaped partition boards are not arranged.
6. The radial flow reaction coupled membrane reactor of claim 5, wherein; the upper channel partition plates are upper blocking partition plates which are arranged corresponding to the upper sector partition plates, and the upper blocking partition plates are blocked at the tops of the corresponding branch channels at intervals in a staggered manner.
7. The radial flow reaction coupled membrane reactor of claim 6, wherein; the lower channel partition plates are lower blocking partition plates which are arranged corresponding to the lower sector partition plates, and the lower blocking partition plates are blocked at the bottoms of the branch channels where the blocking partition plates are not arranged.
8. The radial flow reaction coupled membrane reactor of claim 1, wherein; one side of the membrane is connected with the outer wall of the cylindrical tube, and the other side of the membrane is connected with the inner wall of the reactor.
9. The radial flow reaction coupled membrane reactor of claim 1, wherein; the membrane is made of organic material, inorganic material or composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410372710.0A CN118079848A (en) | 2024-03-29 | 2024-03-29 | Radial flow reaction coupling membrane reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410372710.0A CN118079848A (en) | 2024-03-29 | 2024-03-29 | Radial flow reaction coupling membrane reactor |
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| Publication Number | Publication Date |
|---|---|
| CN118079848A true CN118079848A (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410372710.0A Pending CN118079848A (en) | 2024-03-29 | 2024-03-29 | Radial flow reaction coupling membrane reactor |
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| Country | Link |
|---|---|
| CN (1) | CN118079848A (en) |
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- 2024-03-29 CN CN202410372710.0A patent/CN118079848A/en active Pending
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