CN119803128B - A large-scale plate-fin heat exchange device and method for hydrogen liquefaction - Google Patents
A large-scale plate-fin heat exchange device and method for hydrogen liquefactionInfo
- Publication number
- CN119803128B CN119803128B CN202510090692.1A CN202510090692A CN119803128B CN 119803128 B CN119803128 B CN 119803128B CN 202510090692 A CN202510090692 A CN 202510090692A CN 119803128 B CN119803128 B CN 119803128B
- Authority
- CN
- China
- Prior art keywords
- plate
- fin heat
- hydrogen
- heat exchanger
- exchanger core
- Prior art date
- 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.)
- Active
Links
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a plate-fin heat exchange device and a plate-fin heat exchange method for large-scale hydrogen liquefaction, and belongs to the field of energy equipment. The heat exchange device comprises a cylinder body and a plate-fin heat exchanger core body, wherein an upper annular plate and a lower annular plate are respectively arranged at the top and the bottom of the plate-fin heat exchanger core body. The cavity inside the plate-fin heat exchanger core between the upper ring plate and the lower ring plate is filled with a catalyst for catalyzing the conversion of the hydrogen to the para-hydrogen. The upper annular plate and the lower annular plate are respectively provided with a first hole and a second hole for hydrogen to enter and exit, so that a hydrogen inlet of the cylinder body is communicated with a hydrogen channel inside the plate-fin heat exchanger core body through the first holes, and the hydrogen channel is communicated with a discharge port of the cylinder body through the second holes. The plate-fin heat exchange device provided by the invention solves the problem that an aluminum seal head cannot be directly welded under the conditions of higher design pressure and larger opening of a hydrogen channel in the large-scale hydrogen liquefaction process, and can be applied to large-scale hydrogen treatment capacity.
Description
Technical Field
The invention belongs to the field of energy equipment, and particularly relates to a plate-fin heat exchange device and method for large-scale hydrogen liquefaction.
Background
In the hydrogen liquefaction process, the hydrogen needs to be precooled by adopting an external refrigerant, and the external refrigerant comprises liquid nitrogen, liquefied natural gas and the like. And after the pre-cooled hydrogen is converted into normal and secondary hydrogen through a catalytic device, liquefying the normal and secondary hydrogen through an ultralow-temperature refrigerant.
The plate-fin heat exchanger is applied to the low-temperature heat exchange fields of air separation, petrochemical industry, hydrogen liquefaction and the like in a large scale because of the characteristics of good heat exchange effect, compact structure, strong adaptability and the like. In the current hydrogen liquefaction process, the hydrogen is converted into normal hydrogen and secondary hydrogen in a plate-fin heat exchanger, and a refrigerant is introduced into the other channel for cooling, namely, the catalytic reaction of the hydrogen is completed in the plate-fin heat exchanger, and the heat exchange and cooling are simultaneously carried out.
The catalytic device and the plate-fin heat exchanger are connected through a pipeline. But it is often the case that the hydrogen channel pressure is somewhat high and that a fully open channel is required to be filled with catalyst. When the hydrogen throughput is large, the heat exchanger opening size can reach 1500mm, and if the catalyst is filled with fully open channels, the required head diameter can be very large. The sealing head material of the plate-fin heat exchanger is usually 5083 material, which belongs to Al-Mg alloy, has weaker strength and is less than half of the strength of stainless steel material. And moreover, a special welding mode is required to be adopted for the sealing head and the plate-fin heat exchanger core body, and the welding coefficient can only be taken to be 0.6, so that the aluminum sealing head is too thick, and the manufacturing difficulty exists.
Therefore, there is a need for a plate-fin heat exchanger that can be applied to a larger scale of hydrogen throughput and that ensures efficient heat exchange.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and providing a plate-fin heat exchange device and a plate-fin heat exchange method for large-scale hydrogen liquefaction.
The specific technical scheme adopted by the invention is as follows:
In a first aspect, the invention provides a plate-fin heat exchange device for large-scale hydrogen liquefaction, which comprises a cylinder body and a plate-fin heat exchanger core body. The cylinder body is provided with a hydrogen inlet, and the plate-fin heat exchanger core body is fixed in the cylinder body through the plate-fin heat exchanger support lugs.
The top and the bottom of the plate-fin heat exchanger core are respectively provided with an upper annular plate and a lower annular plate. The diameter of the upper annular plate is equal to the inner diameter of the cylinder, and the diameter of the lower annular plate is smaller than the inner diameter of the cylinder and larger than the outer diameter of the plate-fin heat exchanger core. The cavity inside the plate-fin heat exchanger core between the upper ring plate and the lower ring plate is filled with a catalyst for catalyzing the conversion of the hydrogen to the para-hydrogen. A receiving groove for receiving the catalyst is arranged below the lower annular plate.
The upper annular plate and the lower annular plate are respectively provided with a first hole and a second hole for hydrogen to enter and exit. The hydrogen inlet of the cylinder body is communicated with a hydrogen channel in the core body of the plate-fin heat exchanger through the first hole. The hydrogen channel inside the plate-fin heat exchanger core is communicated with the discharge port of the cylinder body through the second hole. The first hole and the second hole are provided with filter screens.
The lower surface of the upper ring plate is connected with a sealing ring plate with holes with the same size as the section of the upper surface of the plate-fin heat exchanger core body in the middle through a detachable connecting piece. The sealing ring plate is fixed on the side wall of the top of the plate-fin heat exchanger core. The upper surface of the lower annular plate is connected with a fixed annular plate with holes with the same size as the section of the lower surface of the plate-fin heat exchanger core body in the middle through a detachable connecting piece.
A hot flow inlet and a cold agent inlet are formed in the cylinder wall on one side of the cylinder body, and a hot flow outlet and a cold agent outlet are formed in the cylinder wall on the other side of the cylinder body. And the hot fluid inlet, the cold fluid inlet, the hot fluid outlet and the cold fluid outlet are all provided with connecting pipelines, so that the inside and the outside of the cylinder are communicated. The connecting pipeline on the heat flow inlet is communicated with the connecting pipeline on the heat flow channel inlet in the plate-fin heat exchanger core body through the connecting pipe fitting. The joint pipeline on the outlet of the heat flow channel is communicated with the connecting pipeline on the heat flow outlet through a joint pipe fitting. The joint pipeline on the coolant inlet is communicated with the joint pipeline on the coolant channel inlet in the core body of the plate-fin heat exchanger through a joint pipe fitting. The joint pipeline on the outlet of the refrigerant channel is communicated with the connecting pipeline on the outlet of the refrigerant through a joint pipe fitting.
Preferably, the cylinder is made of stainless steel,
Preferably, the upper ring plate and the lower ring plate are made of stainless steel.
Preferably, the filter screen is made of stainless steel.
Preferably, the mesh size of the filter screen is 40-100 mesh.
Preferably, the discharge port is provided on a bottom side surface of the cylinder.
Preferably, the sealing ring plate and the fixing ring plate are both aluminum ring plates. The sealing ring plate and the fixing ring plate are respectively fixed on the top side wall and the bottom side wall of the plate-fin heat exchanger core body in a welding mode.
Preferably, the outer diameter of the sealing ring plate is 0.6 to 1 times of the inner diameter of the cylinder.
Preferably, the connecting pipe is made of stainless steel. The joint pipeline is made of aluminum.
Preferably, the connecting pipe and the joint pipe are connected by steel-aluminum joint pipe fittings.
Preferably, sealing rings capable of bearing low temperature of-200 ℃ are arranged between the sealing ring plate and the upper ring plate and between the fixing ring plate and the lower ring plate.
Furthermore, the sealing ring is made of polytetrafluoroethylene.
Preferably, the difference between the diameters of the lower ring plate and the fixed ring plate and the inner diameter of the cylinder body is more than 400mm, so that a construction space is reserved between the bottom of the plate-fin heat exchanger core body and the cylinder body.
In a second aspect, the present invention provides a heat exchange method using the plate-fin heat exchange device according to the first aspect, which is characterized in that the specific method is as follows:
Before the heat exchange device works, the detachable connecting piece between the upper annular plate and the sealing annular plate is detached, and catalyst filling is carried out inside the plate-fin heat exchanger core body. After filling, the upper ring plate and the sealing ring plate are tightly connected through a detachable connecting piece.
When the heat exchange device works, the refrigerant enters the refrigerant channel in the core of the plate-fin heat exchanger through the refrigerant inlet on the cylinder body, and provides cold energy for hydrogen and other heat flows. The rest heat flow enters the heat flow channel inside the plate-fin heat exchanger core through the heat flow inlet on the cylinder. After heat exchange is completed, the rest of heat flow is discharged to a heat flow outlet through a pipeline.
Hydrogen to be liquefied enters the cylinder body through the hydrogen inlet, and hydrogen enters the hydrogen channel in the plate-fin heat exchanger core body through the first hole with the filter screen. The hydrogen passes through the catalyst between the upper ring plate and the lower ring plate to complete the conversion and heat exchange of the normal hydrogen and the secondary hydrogen. And then discharged to a discharge port of the cylinder through a second hole with a filter screen.
Compared with the prior art, the invention has the following beneficial effects:
(1) The plate-fin heat exchanger is arranged in the stainless steel cylinder, so that the problem that an aluminum sealing head cannot be directly welded under the conditions that the design pressure of a hydrogen channel is high and an opening is large in the large-scale hydrogen liquefaction process is solved;
(2) The hydrogen channel is not provided with an aluminum sealing head, and an operator can enter the stainless steel cylinder through a manhole on the stainless steel cylinder to fill the catalyst;
(3) Compared with the conventional plate-fin heat exchanger, the pressure drop generated by the hydrogen flowing into the hydrogen channel through the stainless steel cylinder is far smaller than the resistance of the hydrogen flowing into the hydrogen channel through the end enclosure filled with the catalyst, so that the invention can reduce the energy consumption of a system.
Drawings
Fig. 1 is a schematic diagram of a plate-fin heat exchanger for liquefying large-scale hydrogen provided in this embodiment;
in the figure, a cylinder body 1, an upper ring plate 2, a plate-fin heat exchanger core body 3, a lower ring plate 4, a receiving groove 5, a sealing ring plate 6, plate-fin heat exchanger lugs 7 and a fixing ring plate 8 are shown.
Detailed Description
The invention is further illustrated and described below with reference to the drawings and detailed description. The technical features of the embodiments of the invention can be combined correspondingly on the premise of no mutual conflict.
In order to solve the problem that the manufacturing difficulty exists in the welding material between the heat exchanger core and the seal head in the large-scale hydrogen liquefying process, a best embodiment of the invention provides a plate-fin heat exchange device for large-scale hydrogen liquefying as shown in figure 1. The device comprises a cylinder body 1 and a plate-fin heat exchanger core body 3 arranged in the cylinder body 1. The plate-fin heat exchanger core 3 is fixed inside the cylinder 1 through plate-fin heat exchanger lugs 7. The cylinder 1 is provided with a hydrogen inlet. In an actual large-sized hydrogen liquefying apparatus, a stainless steel cylinder is often used as the cylinder 1, but other materials may be used.
The end socket is not arranged between the hydrogen inlet and the plate-fin heat exchanger core body 3, and a full-open type opening is adopted. The top of the plate-fin heat exchanger core body 3 is provided with an upper annular plate 2 made of stainless steel. The upper annular plate 2 is provided with a first hole for the hydrogen to be liquefied to enter the plate-fin heat exchanger core 3, so that a hydrogen inlet on the stainless steel cylinder body can be communicated with a hydrogen channel inside the plate-fin heat exchanger core 3 through the first hole to form a fully-open type opening. The bottom of the plate-fin heat exchanger core body 3 is provided with a lower annular plate 4 made of stainless steel. The lower annular plate 4 is provided with a second hole for discharging hydrogen out of the plate-fin heat exchanger core body 3, so that a hydrogen channel inside the plate-fin heat exchanger core body 3 can be communicated with a discharge port on the stainless steel cylinder body through the second hole to form a full-open type opening.
The cavity inside the plate-fin heat exchanger core 3 between the upper ring plate 2 and the lower ring plate 4 is filled with a catalyst for catalyzing the conversion of the hydrogen into para-hydrogen. A receiving groove 5 for receiving the catalyst is provided below the lower ring plate 4 for collecting finely divided catalyst particles discharged from the inside of the plate-fin heat exchanger core 3 by the hydrogen gas or catalyst particles dropped during the replacement of the catalyst packing by a worker.
In order to filter small amounts of impurities in the hydrogen, the protection plate fin type heat exchanger apparatus can be operated normally and its service life is prolonged, and a stainless steel filter screen needs to be disposed on the first hole on the upper ring plate 2 and the second hole on the lower ring plate 4. In practical engineering application, a stainless steel filter screen with the filtering precision of 40-100 meshes can be selected.
The lower surface of the upper ring plate 2 is connected with an aluminum sealing ring plate 6 through a detachable connecting piece, square holes with the same cross section size as the plate-fin heat exchanger core 3 are formed in the middle of the sealing ring plate 6, and the square holes are fixed on the side wall of the top of the plate-fin heat exchanger core 3 in a welding mode. The outer diameter of the sealing ring plate 6 can be adaptively adjusted according to the inner diameter of the stainless steel cylinder, and generally, an aluminum sealing ring plate 6 with the size of 0.6-1 times of the inner diameter of the stainless steel cylinder can be selected.
In order to further enhance the tightness between the upper ring plate 2 and the sealing ring plate 6, a sealing ring capable of resisting the low temperature of-200 ℃ is arranged between the upper ring plate 2 and the sealing ring plate 6. In this embodiment, a Polytetrafluoroethylene (PTFE) seal ring is selected, but other seal rings may be used in practice.
The upper surface of the lower ring plate 4 is connected with a fixed ring plate 8 made of aluminum through a detachable connecting piece. Square holes with the same cross section size as the plate-fin heat exchanger core 3 are formed in the middle of the fixed ring plate 8, and the square holes are fixed on the side wall of the bottom of the plate-fin heat exchanger core 3 in a welding mode. The outer diameters of the lower ring plate 4 and the fixed ring plate 8 are smaller than the inner diameter of the stainless steel cylinder. In practical application, the difference between the diameters of the lower annular plate 4 and the fixed annular plate 8 and the inner diameter of the stainless steel cylinder body is more than 400mm, so that a reasonable construction space is reserved between the bottom of the plate-fin heat exchanger core body 3 and the stainless steel cylinder body.
In order to further enhance the tightness between the lower ring plate 4 and the fixed ring plate 8, a sealing ring capable of resisting the low temperature of-200 ℃ is also arranged between the lower ring plate 4 and the fixed ring plate 8. In this embodiment, a seal ring made of Polytetrafluoroethylene (PTFE) is selected.
In this embodiment, the upper ring plate is connected with the sealing ring plate by bolts, and the lower ring plate is connected with the fixing ring plate by bolts, or detachably connected by studs, screws, or the like.
When filling or emptying the catalyst in the plate-fin heat exchanger core 3, a worker only needs to enter the cylinder through a manhole on the side wall of the stainless steel cylinder, unscrew bolts between the upper annular plate 2 and the sealing annular plate 6 and between the lower annular plate 4 and the fixed annular plate 8, and take down the upper annular plate 2 or the lower annular plate 4 to fill or empty the catalyst.
As shown in fig. 1, a heat flow inlet is formed above the cylinder wall on one side of the stainless steel cylinder, a refrigerant inlet is formed below the cylinder wall on the other side, a refrigerant outlet is formed above the cylinder wall on one side, and a heat flow outlet is formed below the cylinder wall on the other side. Stainless steel pipelines are arranged on the heat flow inlet, the refrigerant inlet, the heat flow outlet and the refrigerant outlet, so that the stainless steel cylinder is communicated with the inside and the outside.
An aluminum pipe is required to be arranged on the plate-fin heat exchanger core body 3 for connection, and a steel-aluminum interface is required to be arranged between the aluminum pipe and the stainless steel pipe for connection. The stainless steel pipeline on the heat flow inlet is communicated with the aluminum pipeline on the heat flow channel inlet in the plate-fin heat exchanger core body 3 through a steel-aluminum joint. The aluminum pipe on the outlet of the heat flow channel is communicated with the stainless steel pipe on the heat flow outlet through a steel-aluminum joint. Stainless steel pipelines on the refrigerant inlets are communicated with aluminum pipelines on the refrigerant channel inlets in the plate-fin heat exchanger core body 3 through steel-aluminum connectors. The aluminum pipe on the coolant channel outlet is communicated with the stainless steel pipe on the coolant outlet through a steel-aluminum joint.
The embodiment also provides a method for the plate-fin heat exchange device, which comprises the following steps:
before the heat exchange device works, the detachable connecting piece between the upper annular plate (2) and the sealing annular plate (6) is detached, and catalyst filling is carried out inside the plate-fin heat exchanger core body (3);
(2) When the heat exchange device works, refrigerant enters a refrigerant channel in the plate-fin heat exchanger core body 3 through a refrigerant inlet on the stainless steel cylinder body to provide cold energy for hydrogen and other heat flows;
(3) Hydrogen to be liquefied enters the stainless steel cylinder body through a hydrogen inlet, hydrogen enters a hydrogen channel in the plate-fin heat exchanger core body 3 through a first hole with a filter screen, the hydrogen passes through a catalyst between the upper annular plate 2 and the lower annular plate 4 to complete normal-para-hydrogen conversion and heat exchange, and then is discharged to a discharge port of the stainless steel cylinder body through a second hole with the filter screen.
The above embodiment is only a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the invention.
Claims (10)
1. The plate-fin heat exchange device for large-scale hydrogen liquefaction is characterized by comprising a cylinder body (1) and a plate-fin heat exchanger core body (3), wherein a hydrogen inlet is formed in the cylinder body (1), and the plate-fin heat exchanger core body (3) is fixed in the cylinder body (1) through a plate-fin heat exchanger support lug (7);
The top and the bottom of the plate-fin heat exchanger core body (3) are respectively provided with an upper annular plate (2) and a lower annular plate (4), the diameter of the upper annular plate (2) is equal to the inner diameter of the cylinder body (1), the diameter of the lower annular plate (4) is smaller than the inner diameter of the cylinder body (1) and larger than the outer diameter of the plate-fin heat exchanger core body (3), a catalyst for catalyzing the conversion of hydrogen normal para-hydrogen is filled in an inner cavity of the plate-fin heat exchanger core body (3) between the upper annular plate (2) and the lower annular plate (4), and a receiving groove (5) for receiving the catalyst is arranged below the lower annular plate (4);
The hydrogen inlet of the cylinder body (1) is communicated with a hydrogen channel in the plate-fin heat exchanger core body (3) through the first hole, the hydrogen channel in the plate-fin heat exchanger core body (3) is communicated with a discharge port of the cylinder body (1) through the second hole, and filter screens are arranged on the first hole and the second hole;
the lower surface of the upper ring plate (2) is connected with a sealing ring plate (6) with holes with the same cross section size as the upper surface of the plate-fin heat exchanger core (3) in the middle through a detachable connecting piece, the sealing ring plate (6) is fixed on the side wall of the top of the plate-fin heat exchanger core (3), and the upper surface of the lower ring plate (4) is connected with a fixed ring plate (8) with holes with the same cross section size as the lower surface of the plate-fin heat exchanger core (3) in the middle through a detachable connecting piece;
The heat flow inlet, the cold flow inlet, the heat flow outlet and the cold flow outlet are all provided with connecting pipelines, so that the inside and the outside of the cylinder body (1) are communicated, the connecting pipeline on the heat flow inlet is communicated with the connecting pipeline on the heat flow channel inlet in the plate-fin heat exchanger core (3) through a joint pipe fitting, the connecting pipeline on the heat flow channel outlet is communicated with the connecting pipeline on the heat flow outlet through a joint pipe fitting, the connecting pipeline on the cold flow inlet is communicated with the connecting pipeline on the cold flow channel inlet in the plate-fin heat exchanger core (3) through a joint pipe fitting, and the connecting pipeline on the cold flow channel outlet is communicated with the connecting pipeline on the cold flow outlet through a joint pipe fitting.
2. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein the cylinder (1) is made of stainless steel, the upper ring plate (2) and the lower ring plate (4) are made of stainless steel, and the filter screen is made of stainless steel.
3. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein the mesh size of the filter screen is 40-100 mesh.
4. The plate-fin heat exchanger for large-scale hydrogen liquefaction according to claim 1, wherein the discharge port is provided on the bottom side surface of the cylinder (1).
5. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein the sealing ring plate (6) and the fixing ring plate (8) are all aluminum ring plates, and the sealing ring plate (6) and the fixing ring plate (8) are respectively fixed on the top side wall and the bottom side wall of the plate-fin heat exchanger core body (3) in a welding mode.
6. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein the outer diameter of the sealing ring plate (6) is 0.6 to 1 times the inner diameter of the cylinder (1).
7. The plate-fin heat exchange device for liquefying large hydrogen according to claim 1, wherein the connecting pipeline is made of stainless steel, the joint pipeline is made of aluminum, and the connecting pipeline and the joint pipeline are connected by adopting steel-aluminum joint pipe fittings.
8. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein sealing rings capable of bearing low temperature of-200 ℃ are arranged between the sealing ring plate (6) and the upper ring plate (2) and between the fixing ring plate (8) and the lower ring plate (4), and the sealing rings are made of polytetrafluoroethylene.
9. The plate-fin heat exchange device for large-scale hydrogen liquefaction according to claim 1, wherein the difference between the diameters of the lower ring plate (4) and the fixed ring plate (8) and the inner diameter of the cylinder (1) is more than 400mm, so that a construction space is reserved between the bottom of the plate-fin heat exchanger core (3) and the cylinder (1).
10. A heat exchange method using the plate-fin heat exchange device according to any one of claims 1 to 9, characterized by comprising the following steps:
Before the heat exchange device works, a detachable connecting piece between the upper annular plate (2) and the sealing annular plate (6) is detached, and catalyst filling is carried out inside the plate-fin heat exchanger core body (3);
When the heat exchange device works, refrigerant enters a refrigerant channel in the plate-fin heat exchanger core body (3) through a refrigerant inlet on the cylinder body (1) to provide cold for hydrogen and other heat flows, and the other heat flows enter a heat flow channel in the plate-fin heat exchanger core body (3) through a heat flow inlet on the cylinder body (1);
Hydrogen to be liquefied enters the cylinder body (1) through a hydrogen inlet, hydrogen enters a hydrogen channel in the plate-fin heat exchanger core body (3) through a first hole with a filter screen, the hydrogen passes through a catalyst between the upper annular plate (2) and the lower annular plate (4) to complete normal-para-hydrogen conversion and heat exchange, and then is discharged to a discharge port of the cylinder body (1) through a second hole with the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510090692.1A CN119803128B (en) | 2025-01-21 | 2025-01-21 | A large-scale plate-fin heat exchange device and method for hydrogen liquefaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510090692.1A CN119803128B (en) | 2025-01-21 | 2025-01-21 | A large-scale plate-fin heat exchange device and method for hydrogen liquefaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119803128A CN119803128A (en) | 2025-04-11 |
| CN119803128B true CN119803128B (en) | 2025-10-17 |
Family
ID=95262241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510090692.1A Active CN119803128B (en) | 2025-01-21 | 2025-01-21 | A large-scale plate-fin heat exchange device and method for hydrogen liquefaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119803128B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714268A (en) * | 2002-10-17 | 2005-12-28 | 犹德有限公司 | Method for obtaining a gaseous phase from a liquid medium and device for carrying out the same |
| CN102865759A (en) * | 2012-09-29 | 2013-01-09 | 河南开元空分集团有限公司 | Integral main cold hot siphon evaporator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH066955U (en) * | 1992-06-09 | 1994-01-28 | 石川島播磨重工業株式会社 | Plate fin type reactor |
| GB2580927A (en) * | 2019-01-30 | 2020-08-05 | Linde Ag | Method and filling device for filling a transport tank |
| CN214620700U (en) * | 2021-03-16 | 2021-11-05 | 杭州中泰深冷技术股份有限公司 | Internal plate-fin heat exchanger with precooling function |
| CN220454354U (en) * | 2023-08-02 | 2024-02-06 | 杭州中泰深冷技术股份有限公司 | Hydrogen heat exchanger device |
| CN220759195U (en) * | 2023-09-08 | 2024-04-12 | 中科富海(中山)低温装备制造有限公司 | Catalyst filling system |
-
2025
- 2025-01-21 CN CN202510090692.1A patent/CN119803128B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714268A (en) * | 2002-10-17 | 2005-12-28 | 犹德有限公司 | Method for obtaining a gaseous phase from a liquid medium and device for carrying out the same |
| CN102865759A (en) * | 2012-09-29 | 2013-01-09 | 河南开元空分集团有限公司 | Integral main cold hot siphon evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119803128A (en) | 2025-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105910474A (en) | Multi-pipe-plate heat exchanger | |
| CN111992142A (en) | Device for isothermal conversion reaction of para-hydrogen | |
| CN108837780B (en) | A hydrogen storage reaction device with multi-layer mesh staggered rib plates | |
| CN116428515A (en) | Solid-state hydrogen storage tank convenient to loading and unloading | |
| CN119803128B (en) | A large-scale plate-fin heat exchange device and method for hydrogen liquefaction | |
| CN205300319U (en) | High pressure heat transducer | |
| CN103148731B (en) | Improved tube type heat exchanger tube box | |
| CN104001386B (en) | A kind of dust filter | |
| CN113883825A (en) | A kind of solid particle cooling equipment for coal classification and quality utilization | |
| CN2539122Y (en) | Closed cooler | |
| CN112923759A (en) | Vertical heat exchanger | |
| CN113713721A (en) | Coupling sleeve hydrogen storage reactor of composite fin and metal foam | |
| CN208936818U (en) | A kind of finned gas cooler of efficiency compact high | |
| CN218210191U (en) | Condenser for producing and liquefying nitrous oxide | |
| CN111578749A (en) | Floating heat exchanger | |
| CN217083466U (en) | Plugging device for non-welding leak stoppage of tube type heat exchanger | |
| CN212538908U (en) | Floating heat exchanger | |
| CN2632613Y (en) | Enamel glass sleeve heat exchanger | |
| CN104776749B (en) | A kind of tube header of tube-type heat exchanger seals structure | |
| CN210138659U (en) | Reactor with opening pipe connecting structure | |
| CN116499287A (en) | A plate-fin heat exchanger filled with catalyst | |
| CN223683161U (en) | Pipeline filter device for chemical engineering design | |
| CN2446487Y (en) | Floating end structure of floating heat exchanger | |
| CN210021628U (en) | Reproducible radial flow adsorber | |
| JP7522897B2 (en) | Nested ash discharge structure and ash discharge method in high-temperature dust removal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |