CN114719638A - Plate-fin heat exchanger with built-in catalyst - Google Patents
Plate-fin heat exchanger with built-in catalyst Download PDFInfo
- Publication number
- CN114719638A CN114719638A CN202210208001.XA CN202210208001A CN114719638A CN 114719638 A CN114719638 A CN 114719638A CN 202210208001 A CN202210208001 A CN 202210208001A CN 114719638 A CN114719638 A CN 114719638A
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- Prior art keywords
- heat exchanger
- fin
- catalyst
- plate
- fin heat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003054 catalyst Substances 0.000 title claims abstract description 42
- 238000005192 partition Methods 0.000 claims description 16
- 239000003463 adsorbent Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0285—Heating or cooling the reactor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A plate-fin heat exchanger with a built-in catalyst comprises a heat exchanger body, wherein the heat exchanger body consists of an inlet connecting pipe, an outlet connecting pipe, end sockets and a plate-fin heat exchanger core body, wherein a flow deflector is arranged above the plate-fin heat exchanger core body, the end sockets are arranged on two sides and above the flow deflector, a first high-temperature medium inlet is arranged at the top of the end socket on the upper side, the end sockets on two sides are respectively provided with a low-temperature medium outlet and a second high-temperature medium inlet, the end sockets on two sides and the bottom of the lower side of the plate-fin heat exchanger core body are respectively provided with the end sockets, the end socket on the bottom of the plate-fin heat exchanger core body is the first high-temperature medium outlet, and the end sockets on two sides are respectively provided with the second high-temperature medium outlet and the low-temperature medium inlet.
Description
Technical Field
The invention relates to a plate-fin heat exchanger with a built-in catalyst, and belongs to the field of low-temperature heat exchange.
Background
The plate-fin heat exchanger has the characteristics of good heat exchange effect, compact structure, strong adaptability and the like, and is widely applied to the low-temperature heat exchange fields of air separation, petrochemical industry, hydrogen liquefaction and the like. The plate-fin heat exchanger utilizes the disturbance of fins to media in a heat transfer channel to ensure that cold and hot media have high heat exchange efficiency. In addition, different fins and guide vanes can be selected according to different media of the plate-fin heat exchanger, and mutual heat exchange among a gas medium, a gas-liquid mixed medium and a liquid medium can be well met. However, in some fields requiring simultaneous low-temperature heat exchange and catalytic conversion, such as hydrogen liquefaction, it is usually required to have a plate-fin heat exchanger and a catalytic device filled with a catalyst, the catalytic device and the plate-fin heat exchanger need to be connected through a pipeline, and in addition, the safety and cold insulation measures of the catalytic device are also considered, which may increase the volume of the whole cooling box, increase the equipment investment cost, and cause the loss of cooling capacity.
Disclosure of Invention
The invention aims to solve the problems and provides a plate-fin heat exchanger with a built-in catalyst, so that a medium can be subjected to low-temperature heat exchange and catalytic conversion.
The purpose of the invention is realized by the following steps: the plate-fin heat exchanger with the built-in catalyst comprises a heat exchanger body, wherein the heat exchanger body is composed of an inlet connecting pipe, an outlet connecting pipe, end sockets and a plate-fin heat exchanger core body, wherein a flow deflector is arranged above the plate-fin heat exchanger core body, the end sockets are arranged on two sides and above the flow deflector, a first high-temperature medium inlet is arranged at the top of the end socket on the upper portion, low-temperature medium outlets and second high-temperature medium inlets are respectively arranged on the end sockets on two sides, the end sockets are also respectively arranged on two sides and the bottom of the lower portion of the plate-fin heat exchanger core body, the end socket on the bottom of the plate-fin heat exchanger core body is the first high-temperature medium outlet, and the end sockets on two sides are respectively provided with the second high-temperature medium outlets and the low-temperature medium inlets.
Preferably, the method comprises the following steps: the plate-fin heat exchanger core comprises fins, sealing strips, partition plates and side plates, wherein the partition plates and the fins are stacked alternately, the side plates are arranged on the outer sides of the outermost partition plates, two ends of each fin are connected with guide vanes, the partition plates are used for welding two adjacent fin layers together and separating the two adjacent fin layers simultaneously, the partition plates on two sides of each fin and the sealing strips on the periphery of each fin jointly enclose a closed fin channel, catalysts are placed in part of the fin channels, the closed fin channels become catalyst-containing fin channels and catalyst-free fin channels, cold and hot media in the catalyst-containing fin channels and the catalyst-free fin channels flow through the fin channels for heat exchange, and the arrangement modes of the cold and hot fin channels are single-stack arrangement, multiple-stack arrangement, single-stack and multiple-stack mixed arrangement.
Preferably, the method comprises the following steps: and the seal heads without the silk screens at the two sides are respectively connected into the catalyst-free finned channels.
Preferably, the method comprises the following steps: the core body of the plate-fin heat exchanger is a single core body, a double core body or a multi-core body. The core body combination forms series connection, parallel connection or series-parallel connection.
Preferably, the method comprises the following steps: the catalyst can also be replaced by one or more of the adsorbents. .
Preferably, the method comprises the following steps: the core body of the plate-fin heat exchanger is a single core body, a double core body or a multi-core body. The core body combination forms series connection, parallel connection or series-parallel connection.
Preferably, the method comprises the following steps: the flow guide section of the catalyst-free finned passage is open, and the flow guide section of the catalyst-free finned passage is open at the side surface, and middle flow guide.
Preferably, the method comprises the following steps: the wire mesh in the end socket is made of stainless steel, aluminum or copper.
Preferably, the method comprises the following steps: the catalyst-embedded fin channels may be heat medium channels or cold medium channels. The multiple heat exchange channels filled with the catalyst can flow through the same medium or different media. Different heat exchange channels may be filled with the same catalyst or with different catalysts.
Preferably, the method comprises the following steps: the heat exchanger body is an aluminum plate-fin heat exchanger, a stainless steel plate-fin heat exchanger and a copper plate-fin heat exchanger.
The beneficial effects of the invention are:
1. the catalyst is filled in the core body channel of the plate-fin heat exchanger, so that the catalytic conversion of the medium is realized while the heat exchange is carried out;
2. through increase the silk screen in import and export head department, carried out the catalyst granule when having avoided the medium to flow out the heat exchanger, prevented that the catalyst granule from getting into low reaches equipment.
3. The use of a reaction device is avoided, the cold insulation and the safety guarantee of the reaction device do not need to be considered, and the equipment investment cost is reduced.
4. The pipeline does not need to be butted with the catalytic device outside the heat exchanger, so that the opening of the heat exchanger and the cold loss of the low-temperature medium in the pipeline circulation process are reduced.
5 the plate-fin heat exchanger has the dual functions of catalytic conversion and low-temperature heat exchange, has a compact structure, and reduces the space occupied by equipment in a cold box.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of a heat exchanger core.
Fig. 3 is a schematic structural diagram of the head with the wire mesh.
Fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
As shown in fig. 1, the invention is a plate-fin heat exchanger with a built-in catalyst, comprising an inlet connecting pipe 1, an outlet connecting pipe 10, a seal head 2 with a screen, a seal head 5 without a screen, a core body 8 of the plate-fin heat exchanger and a catalyst 9; the plate-fin heat exchanger core is formed by superposing and brazing a heat exchange channel 6 with a built-in catalyst and a heat exchange channel 7 without the catalyst into a whole, the core internally comprises fins 11, flow deflectors 4, seals 12, partition plates 13, side plates 14 and the like, and part of fin channels are filled with the catalyst.
The medium to be subjected to catalytic conversion enters from the inlet connecting pipe 1, enters the fin channel 6 filled with the catalyst through the end socket 2 with the wire mesh and the flow deflector 4, is subjected to catalytic conversion and fin heat exchange through the catalyst 9, passes through the flow deflector at the other end and the end socket with the wire mesh, and flows out from the outlet connecting pipe 10. The medium which does not need catalytic conversion enters from other inlet connecting pipes, enters the fin channel 7 which is not filled with the catalyst through the non-screen seal head 5 and the flow deflector for heat exchange, then flows out from the outlet connecting pipe through the flow deflector at the other end and the non-screen seal head.
As an embodiment of the present invention, a catalyst-embedded plate-fin heat exchanger can be, but is not limited to, applied to a hydrogen liquefaction process. And the normal-temperature hydrogen simultaneously performs heat exchange cooling and catalytic conversion in the heat exchange channel of the plate-fin heat exchanger filled with the catalyst. The hydrogen is cooled by the return cold medium, and meanwhile, the orthohydrogen in the hydrogen is gradually converted into parahydrogen.
When the plate-fin heat exchanger is applied to a hydrogen liquefaction process, the catalyst is one or more of Fe (OH)3, Cr (OH)3, Mn (OH)4, Co (OH)3 and Ni (OH) 2.
The plate-fin heat exchanger is an aluminum plate-fin heat exchanger.
As shown in fig. 2, the plate-fin heat exchanger core includes fins 11, guide vanes 4, seals 12, partition plates 13, side plates 14, and the like. The partitions 13 are alternately stacked with the fins 11, and side plates 14 are provided outside the outermost partitions. The guide vanes 4 are provided at both ends of the fin 11. The partition plate is used for welding the two adjacent fin layers together and separating the two adjacent fin layers at the same time. The partition boards on the two sides of the fin layer and the surrounding seal strips jointly form a closed medium channel.
The inner fin channel of the plate-fin heat exchanger core comprises a fin channel 6 with a built-in catalyst and a fin channel 7 without a catalyst. And cold and hot media flow through the fin channels and exchange heat, and the arrangement mode of the cold and hot fin channels is single-stack and overlapping mixed arrangement.
The type of the flow guide section of the plate-fin heat exchanger core body filled with the catalyst channel is an end surface open type, and the type of the flow guide section without the catalyst channel is a channel side surface open type.
The fin types are porous type fins and corrugated type fins.
The plate-fin heat exchanger is provided with at least one heat medium channel and one cold medium channel. At least one heat exchange channel filled with catalyst.
As shown in fig. 3, the seal head 2 with the wire mesh and the seal head are made of aluminum, and the wire mesh is made of stainless steel.
Example 2
The difference between the embodiment 2 and the above embodiments is only the corresponding number of the hot and cold medium streams, the positions of the medium entering and exiting the heat exchanger, the positions of the seal head with and without the screen, the opening type of the flow deflector and the type of the heat exchange channel filler.
As shown in fig. 4, in the present embodiment, the heat exchange channel filler is an adsorbent.
The high-temperature medium 2 containing impurities enters the end socket with the wire mesh from the top side face connecting pipe and then enters the heat exchange channel filled with the adsorbent. And the high-temperature medium 2 and the low-temperature medium 1 exchange heat and cool, impurities in the high-temperature medium are removed by the adsorbent in the heat exchange channel, and the purified high-temperature medium 2 flows out from the end socket with the wire mesh at the bottom and the outlet connecting pipe. The high-temperature medium 1 which does not need to be adsorbed and purified enters the non-silk-screen end socket from the local connecting pipe on the top end face, and flows out from the local connecting pipe on the bottom end face after heat exchange in the heat exchange channel filled with the adsorbent; the low-temperature medium 1 flows in from the bottom side face connecting pipe, and flows out from the top side face connecting pipe after heat exchange in the heat exchange channel without the adsorbent.
The positions of the wire mesh seal heads are arranged on the top side and the bottom side of the heat exchanger core body in the embodiment; the positions of the non-wire mesh seal heads are the top side surface and the local top end surface, and the bottom side surface and the local bottom end surface of the heat exchanger core body.
In this embodiment, the opening type of the flow guide section of the heat exchange channel containing the adsorbent inside the plate-fin heat exchanger core is a channel side opening type, and the types of the flow guide section of the channel without the adsorbent are a channel side opening type and a channel end surface local opening type.
The above-mentioned embodiments are only two preferable specific application examples of the present invention, and do not limit the scope of protection of the present patent. All technical solutions formed by equivalent transformation or effective replacement belong to the protection scope of the patent claims.
Claims (10)
1. The utility model provides a plate-fin heat exchanger of built-in catalyst, it includes the heat exchanger body, its characterized in that: the heat exchanger body comprises an inlet connecting pipe, an outlet connecting pipe, end sockets and a plate-fin heat exchanger core body, wherein a flow deflector is arranged above the plate-fin heat exchanger core body, the end sockets are arranged on two sides and above the flow deflector, a first high-temperature medium inlet is arranged at the top of the upper end socket, the end sockets on two sides are respectively provided with a low-temperature medium outlet and a second high-temperature medium inlet, the end sockets are also respectively arranged on two sides and the bottom below the plate-fin heat exchanger core body, the end socket at the bottom is a first high-temperature medium outlet, and the end sockets on two sides are respectively provided with a second high-temperature medium outlet and a low-temperature medium inlet.
2. The catalyst-embedded plate-fin heat exchanger of claim 1, wherein: the plate-fin heat exchanger core comprises fins, sealing strips, partition plates and side plates, wherein the partition plates and the fins are stacked alternately, the side plates are arranged on the outer sides of the outermost partition plates, two ends of each fin are connected with guide vanes, the partition plates are used for welding two adjacent fin layers together and separating the two adjacent fin layers simultaneously, the partition plates on two sides of each fin and the sealing strips on the periphery of each fin jointly enclose a closed fin channel, catalysts are placed in part of the fin channels, the closed fin channels become catalyst-containing fin channels and catalyst-free fin channels, cold and hot media in the catalyst-containing fin channels and the catalyst-free fin channels flow through the fin channels for heat exchange, and the arrangement modes of the cold and hot fin channels are single-stack arrangement, multiple-stack arrangement, single-stack and multiple-stack mixed arrangement.
3. The plate-fin heat exchanger with built-in catalyst of claim 2, wherein: and the seal heads without the silk screens at the two sides are respectively connected into the catalyst-free finned channels.
4. The catalyst-embedded plate-fin heat exchanger of claim 2, wherein: the core body of the plate-fin heat exchanger is a single core body, a double core body or a multi-core body, and the combination form of the core bodies is series connection, parallel connection or series-parallel connection.
5. The catalyst-embedded plate-fin heat exchanger of claim 2, wherein: the catalyst can also be replaced by one or more of the adsorbents.
6. The catalyst-embedded plate-fin heat exchanger of claim 2, wherein: the core body of the plate-fin heat exchanger is a single core body, a double core body or a multi-core body, and the combination form of the core bodies is series connection, parallel connection or series-parallel connection.
7. The catalyst-embedded plate-fin heat exchanger of claim 3, wherein: the flow guide section of the catalyst-free finned passage is open, and the flow guide section of the catalyst-free finned passage is open at the side surface, and middle flow guide.
8. The catalyst-embedded plate-fin heat exchanger of claim 3, wherein: the wire mesh in the end socket is made of stainless steel, aluminum or copper.
9. The catalyst-embedded plate-fin heat exchanger of claim 3, wherein: the fin channels with the built-in catalyst are heat medium channels or cold medium channels, a plurality of heat exchange channels filled with the catalyst circulate the same medium or different media, and different heat exchange channels are filled with the same catalyst or different catalysts.
10. The catalyst-embedded plate-fin heat exchanger of claim 1, wherein: the heat exchanger body is an aluminum plate-fin heat exchanger, a stainless steel plate-fin heat exchanger and a copper plate-fin heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210208001.XA CN114719638A (en) | 2022-03-04 | 2022-03-04 | Plate-fin heat exchanger with built-in catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210208001.XA CN114719638A (en) | 2022-03-04 | 2022-03-04 | Plate-fin heat exchanger with built-in catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114719638A true CN114719638A (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210208001.XA Pending CN114719638A (en) | 2022-03-04 | 2022-03-04 | Plate-fin heat exchanger with built-in catalyst |
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| CN (1) | CN114719638A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147288A (en) * | 1994-03-02 | 1997-04-09 | 卡塔鲁逖克公司 | Improved process and catalyst structure employing integral heat exchange with optional downstream flameholder |
| EP1348484A2 (en) * | 2002-03-27 | 2003-10-01 | Calsonic Kansei Corporation | Heat Exchanger with Catalyst |
| CN1851377A (en) * | 2006-05-19 | 2006-10-25 | 华东理工大学 | Band-bubble type heat-exchanger |
| CN102151521A (en) * | 2011-04-26 | 2011-08-17 | 华东理工大学 | Inner-cooling heat exchange type axial-flow fixed bed catalytic reactor |
| CN204202451U (en) * | 2014-11-13 | 2015-03-11 | 中国船舶重工集团公司第七�三研究所 | Zigzag louvered fin type plate-fin heat exchanger |
| CN109556434A (en) * | 2018-12-29 | 2019-04-02 | 无锡马山永红换热器有限公司 | Plate-fin heat exchanger |
| CN210664032U (en) * | 2019-08-29 | 2020-06-02 | 中石化南京化工研究院有限公司 | Distributed SO of sulfuric acid device2Conversion heat exchanger |
| CN113587701A (en) * | 2021-07-16 | 2021-11-02 | 北京科荣达航空科技股份有限公司 | Heat exchanger with ozone conversion and high-temperature precooling functions |
| CN113639573A (en) * | 2021-08-31 | 2021-11-12 | 北京航天试验技术研究所 | Brazed plate heat exchanger with filtering adsorption and normal-para hydrogen conversion functions |
-
2022
- 2022-03-04 CN CN202210208001.XA patent/CN114719638A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147288A (en) * | 1994-03-02 | 1997-04-09 | 卡塔鲁逖克公司 | Improved process and catalyst structure employing integral heat exchange with optional downstream flameholder |
| EP1348484A2 (en) * | 2002-03-27 | 2003-10-01 | Calsonic Kansei Corporation | Heat Exchanger with Catalyst |
| CN1851377A (en) * | 2006-05-19 | 2006-10-25 | 华东理工大学 | Band-bubble type heat-exchanger |
| CN102151521A (en) * | 2011-04-26 | 2011-08-17 | 华东理工大学 | Inner-cooling heat exchange type axial-flow fixed bed catalytic reactor |
| CN204202451U (en) * | 2014-11-13 | 2015-03-11 | 中国船舶重工集团公司第七�三研究所 | Zigzag louvered fin type plate-fin heat exchanger |
| CN109556434A (en) * | 2018-12-29 | 2019-04-02 | 无锡马山永红换热器有限公司 | Plate-fin heat exchanger |
| CN210664032U (en) * | 2019-08-29 | 2020-06-02 | 中石化南京化工研究院有限公司 | Distributed SO of sulfuric acid device2Conversion heat exchanger |
| CN113587701A (en) * | 2021-07-16 | 2021-11-02 | 北京科荣达航空科技股份有限公司 | Heat exchanger with ozone conversion and high-temperature precooling functions |
| CN113639573A (en) * | 2021-08-31 | 2021-11-12 | 北京航天试验技术研究所 | Brazed plate heat exchanger with filtering adsorption and normal-para hydrogen conversion functions |
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