CN219828529U - Hydrogenation system - Google Patents
Hydrogenation system Download PDFInfo
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- CN219828529U CN219828529U CN202321212175.XU CN202321212175U CN219828529U CN 219828529 U CN219828529 U CN 219828529U CN 202321212175 U CN202321212175 U CN 202321212175U CN 219828529 U CN219828529 U CN 219828529U
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 147
- 239000001257 hydrogen Substances 0.000 claims abstract description 258
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 258
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 257
- 239000007789 gas Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000001502 supplementing effect Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The present disclosure relates to a hydrogenation system comprising a hydrogen source, a hydrogenation device, a hydrogen storage device and a connecting device, wherein the hydrogenation device comprises a low pressure hydrogenation unit and a high pressure hydrogenation unit; the hydrogen storage device comprises a low-pressure hydrogen storage unit and a high-pressure hydrogen storage unit, wherein the air inlet end of the low-pressure hydrogen storage unit is communicated with a hydrogen source, the air outlet end of the low-pressure hydrogen storage unit is communicated with a low-pressure hydrogenation unit, the air inlet end of the high-pressure hydrogen storage unit is communicated with the hydrogen source, and the air outlet end of the high-pressure hydrogen storage unit is communicated with the high-pressure hydrogenation unit; the connecting device is used for communicating the low-pressure hydrogen storage unit with the high-pressure hydrogen storage unit and is provided with a control valve group, so that the high-pressure hydrogenation unit can be selectively communicated with the low-pressure hydrogen storage unit or the high-pressure hydrogen storage unit. According to the hydrogenation system, the low-pressure hydrogen storage unit and the high-pressure hydrogen storage unit are used in a combined mode, so that the use frequency of the high-pressure hydrogen storage unit can be reduced in the hydrogenation process, a compressor is not required to be started frequently, the high-pressure hydrogen storage tank is subjected to pressure supplementing, energy consumption is reduced, and the service life of equipment is prolonged.
Description
Technical Field
The present disclosure relates to the field of hydrogenation technologies, and in particular, to a hydrogenation system.
Background
In recent years, with the rapid development of fuel cell technology, fuel cells using hydrogen energy as fuel are being used in cars, passenger vehicles and cargo vehicles, and with the gradual popularization of hydrogen energy automobiles, the use demands of hydrogen stations for hydrogenating hydrogen energy automobiles are increasing.
Currently, hydrogen stations of hydrogen energy automobiles generally use compressors to directly compress hydrogen with initial pressure (about 20 MPa) into hydrogen with two pressures of 35MPa and 70MPa, and then the hydrogen is injected into corresponding vehicles, and as high-pressure hydrogen energy technology is mature, 70MPa fuel cell automobiles gradually enter the field of vision of people, compared with 35MPa fuel cell automobiles, 70MPa fuel cell automobiles store more hydrogen, have longer endurance mileage and higher energy utilization efficiency.
However, since the technology of the high-pressure hydrogen storage tank is still not mature, the cost of the high-pressure hydrogen storage tank with large volume is too high, the high-pressure hydrogen storage tank in the hydrogenation station is usually a hydrogen storage tank with smaller capacity, and as the number of the 70MPa fuel cell automobiles increases, the compressor needs to be frequently started to supplement the pressure of the high-pressure hydrogen storage tank, so that the energy consumption is increased, and the service life of equipment is reduced.
Disclosure of Invention
It is an object of the present disclosure to provide a hydrogenation system that can reduce the frequency of use and the frequency of aeration of a high pressure hydrogen storage unit, can reduce energy consumption, and improve the life of equipment in the high pressure hydrogen storage unit.
To achieve the above object, the present disclosure provides a hydrogenation system comprising:
a hydrogen source;
the hydrogenation device comprises a low-pressure hydrogenation unit and a high-pressure hydrogenation unit, and is used for hydrogenating equipment to be hydrogenated;
the hydrogen storage device comprises a low-pressure hydrogen storage unit and a high-pressure hydrogen storage unit, wherein the air inlet end of the low-pressure hydrogen storage unit is communicated with the hydrogen source, the air outlet end of the low-pressure hydrogen storage unit is communicated with the low-pressure hydrogenation unit, the air inlet end of the high-pressure hydrogen storage unit is communicated with the hydrogen source, and the air outlet end of the high-pressure hydrogen storage unit is communicated with the high-pressure hydrogenation unit;
and the connecting device is used for communicating the air outlet end of the low-pressure hydrogen storage unit with the air outlet end of the high-pressure hydrogen storage unit and is provided with a control valve group, and the control valve group is configured to enable the high-pressure hydrogenation unit to be selectively communicated with the low-pressure hydrogen storage unit or the high-pressure hydrogen storage unit.
Optionally, the low pressure hydrogen storage unit includes a plurality of low pressure hydrogen storage tanks and a low pressure compressor that communicates the low pressure hydrogen storage tanks with the hydrogen source.
Optionally, each low-pressure hydrogen storage tank is connected with the low-pressure hydrogenation unit through a low-pressure conveying pipe, and a first control valve for controlling on-off of the low-pressure conveying pipe is arranged on the low-pressure conveying pipe.
Optionally, the high-pressure hydrogen storage unit includes a plurality of high-pressure hydrogen storage tanks and a high-pressure compressor that communicates the high-pressure hydrogen storage tanks with the hydrogen source.
Optionally, each high-pressure hydrogen storage tank is connected with the high-pressure hydrogenation unit through a high-pressure conveying pipe, and a second control valve for controlling on-off of the high-pressure conveying pipe is arranged on the high-pressure conveying pipe.
Optionally, the connecting device comprises a connecting pipeline, the control valve group comprises a third control valve and a one-way check valve, the third control valve is arranged on the connecting pipeline and used for controlling the low-pressure hydrogen storage unit to be selectively communicated with the high-pressure hydrogenation unit, and the one-way check valve is used for preventing the high-pressure hydrogen storage unit from being communicated with the low-pressure hydrogenation unit.
Optionally, the connecting device further comprises a safety valve which is connected to the connecting pipeline in a bypass mode and is used for releasing pressure when the air pressure in the connecting device reaches a preset value.
Optionally, the connecting device further comprises a pressure gauge and a stop valve, wherein the pressure gauge is connected to the connecting pipeline in a bypass mode and used for measuring pressure in the connecting pipeline, and the stop valve is located between the pressure gauge and the connecting pipeline and used for disconnecting the pressure gauge from the connecting pipeline.
Optionally, the connecting device further comprises a pressure relief part, and the pressure relief part is connected to the connecting pipeline in a bypass manner and is used for relieving pressure of the hydrogenation system.
Optionally, a first heat exchanger is arranged between the air outlet end of the low-pressure hydrogen storage unit and the low-pressure hydrogenation unit, a second heat exchanger is arranged between the air outlet end of the high-pressure hydrogen storage unit and the high-pressure hydrogenation unit, and the first heat exchanger and the second heat exchanger are used for cooling hydrogen in the hydrogenation system.
Compared with the prior art, the utility model has the advantages that: the hydrogenation system comprises a hydrogen source, a hydrogenation device, a hydrogen storage device and a connecting device, wherein the hydrogen storage device comprises a high-pressure hydrogen storage unit and a low-pressure hydrogen storage unit, and the hydrogenation device comprises a high-pressure hydrogenation unit and a low-pressure hydrogenation unit. The high-pressure hydrogen storage unit and the low-pressure hydrogen storage unit are respectively communicated with the high-pressure hydrogenation unit and the low-pressure hydrogenation unit, the high-pressure hydrogenation unit can be selectively communicated with the low-pressure hydrogen storage unit or the high-pressure hydrogen storage unit through the connecting device, when the 70MPa fuel cell automobile is hydrogenated, the low-pressure hydrogen storage unit can be used for hydrogenation firstly, and after a certain air pressure is reached, the low-pressure hydrogen storage unit is used for hydrogenation, so that the whole hydrogenation process is finally completed. The hydrogenation system can reduce the use frequency of the high-pressure hydrogen storage unit in the hydrogenation process, slow down the use speed of hydrogen in the high-pressure hydrogen storage unit, so that a compressor is not required to be started frequently, the high-pressure hydrogen storage tank is subjected to pressure supplementing, the energy consumption is reduced, and the service life of equipment is prolonged.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic diagram of a hydrogenation system of the present disclosure.
Description of the reference numerals
1-a hydrogen source;
2-hydrogenation unit; 21-a low pressure hydrogenation unit; 211-low pressure delivery tube; 212-a first control valve; 22-a high pressure hydrogenation unit; 221-high pressure delivery conduit; 222-a second control valve;
3-a hydrogen storage device; 31-a low pressure hydrogen storage unit; 311-a low pressure hydrogen storage tank; 312-low pressure compressor; 32-a high pressure hydrogen storage unit; 321-a high-pressure hydrogen storage tank; 322-high pressure compressor;
4-connecting means; 41-connecting a pipeline; 411-a third control valve; 412-one-way check valve; 42-a safety valve; 43-pressure gauge; 44-a shut-off valve; 45-pressure relief part; 51-a first heat exchanger; 52-a second heat exchanger.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In this disclosure, unless otherwise indicated, terms of orientation such as "upper, lower, high, low, top, bottom" are used to generally refer to orientations of the corresponding component or structure in the direction of gravity, and in particular reference may be made to the orientation of the drawing as shown in fig. 1. "inner and outer" means both the inner and outer of the corresponding component profile. In addition, it should be noted that terms such as "first, second", etc. are used to distinguish one element from another element without order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements. The foregoing definitions are provided for the purpose of illustrating and explaining the present disclosure and should not be construed as limiting the present disclosure.
The present disclosure relates to a hydrogenation system including a hydrogen source, a hydrogenation unit, a hydrogen storage unit, and a connection device. The hydrogen source can supplement hydrogen to the hydrogen storage device, and the hydrogen storage device comprises a low-pressure hydrogen storage unit and a high-pressure hydrogen storage unit, so that the hydrogen in the hydrogen source can be compressed into low-pressure hydrogen and high-pressure hydrogen for storage. The hydrogenation device comprises a low-pressure hydrogenation unit and a high-pressure hydrogenation unit, can be communicated with the low-pressure hydrogen storage unit and the high-pressure hydrogen storage unit, and is used for hydrogenating equipment to be hydrogenated. The connecting device can be used for communicating the air outlet end of the low-pressure hydrogen storage unit with the air outlet end of the high-pressure hydrogen storage unit and is provided with a control valve group, the high-pressure hydrogen storage unit can be selectively connected with the low-pressure hydrogen storage unit through the control valve group, when high-pressure equipment to be hydrogenated is hydrogenated, the low-pressure hydrogen storage unit can be used for hydrogenation firstly, after the hydrogen in the equipment to be hydrogenated reaches a certain air pressure, the high-pressure hydrogen storage unit is used for hydrogenation of the equipment to be hydrogenated, and finally the hydrogenation of the equipment to be hydrogenated is completed. Therefore, the number of times of hydrogen storage of the high-pressure hydrogen storage unit can be reduced, the energy consumption is reduced, and the service life of equipment is prolonged.
For ease of understanding, the specific structure and operating principles of the hydrogenation system of the present disclosure will be described in detail below with reference to fig. 1 in conjunction with the examples.
In one embodiment of the present disclosure, referring to fig. 1, the hydrogenation system of the present disclosure includes a hydrogen source 1, a hydrogenation unit 2, a hydrogen storage unit 3, and a connection unit 4. The hydrogen source 1 is capable of storing a large amount of hydrogen gas to supply the hydrogen storage device 3 with hydrogen gas. The hydrogen storage device 3 comprises a low-pressure hydrogen storage unit 31 and a high-pressure hydrogen storage unit 32, wherein the air inlet ends of the low-pressure hydrogen storage unit 31 and the high-pressure hydrogen storage unit 32 are respectively communicated with a hydrogen source, and hydrogen in the hydrogen source 1 can be compressed into low-pressure hydrogen or high-pressure hydrogen for storage. The hydrogenation device 2 comprises a low-pressure hydrogenation unit 21 and a high-pressure hydrogenation unit 22, the air pressure in equipment to be hydrogenated can be detected through the hydrogenation device 2, excessive pressurization is avoided, and the air outlet ends of the low-pressure hydrogen storage unit 31 and the high-pressure hydrogen storage unit 32 are respectively communicated with the low-pressure hydrogenation unit 21 and the high-pressure hydrogenation unit 22, so that hydrogenation can be performed on the equipment to be hydrogenated, and the equipment to be hydrogenated can be a hydrogen energy automobile, such as a hydrogen energy automobile requiring air pressure of 35MPa and 70 MPa. The connection means 4 is capable of communicating the gas outlet end of the low-pressure hydrogen storage unit 31 with the gas outlet end of the high-pressure hydrogen storage unit 32, and has a control valve group that controls the high-pressure hydrogenation unit 22 to selectively communicate with the low-pressure hydrogen storage unit 31 or the high-pressure hydrogen storage unit 32.
When the hydrogenation is carried out on the equipment to be hydrogenated which needs high-pressure hydrogen, for example, a hydrogen energy automobile which needs 75MPa, and the like, the low-pressure hydrogen storage unit 31 and the high-pressure hydrogenation unit 22 can be communicated through the control valve group, the low-pressure hydrogen is firstly filled into the equipment to be hydrogenated, after the hydrogen in the equipment to be hydrogenated reaches a certain pressure, the communication between the low-pressure hydrogen storage unit 31 and the high-pressure hydrogenation unit 22 is closed through the control valve group, the high-pressure hydrogen storage unit 32 and the high-pressure hydrogenation unit 22 are opened, and hydrogenation is continuously carried out on the equipment to be hydrogenated through the high-pressure hydrogen storage unit 32 until the hydrogenation work is completed. The hydrogenation system disclosed by the disclosure can be used for alternatively hydrogenating the hydrogenation equipment through the low-pressure hydrogen storage unit 31 and the high-pressure hydrogen storage unit 32, so that the number of times of supplementing hydrogen to the high-pressure hydrogen storage unit 32 can be reduced, the service life of the equipment in the high-pressure hydrogen storage unit 32 is prolonged, and the consumption of energy sources can be reduced.
In one embodiment of the present disclosure, referring to fig. 1, the low pressure hydrogen storage unit 31 includes a plurality of low pressure hydrogen storage tanks 311 and a low pressure compressor 312 for communicating the low pressure hydrogen storage tanks 311 with a hydrogen source, and the low pressure compressor 312 is provided with at least one, but may be provided with a plurality of low pressure hydrogen storage tanks 311, respectively, to be correspondingly connected to each low pressure hydrogen storage tank 311, thereby accelerating the hydrogen storage efficiency of the low pressure hydrogen storage unit 31. In the present embodiment, three low-pressure hydrogen storage tanks 311 are provided, one low-pressure compressor 312 is provided, and the low-pressure compressors 312 are connected to the three low-pressure hydrogen storage tanks 311, respectively, although the number of low-pressure hydrogen storage tanks 311 and the number of low-pressure compressors 312 may be other in other embodiments, which is not limited in this disclosure. When hydrogen is stored, the hydrogen in the hydrogen source 1 can be compressed by the low-pressure compressor 312 according to the pressure of the residual hydrogen in each low-pressure hydrogen storage tank 311, then the compressed low-pressure hydrogen is sequentially introduced into the plurality of low-pressure hydrogen storage tanks 311 for storage, and when all the low-pressure hydrogen storage tanks 311 are fully filled with hydrogen, the hydrogen source 1 and the low-pressure compressor 312 are closed to complete the hydrogen storage of the low-pressure hydrogen storage unit 31.
In one embodiment of the present disclosure, referring to fig. 1, a low pressure hydrogen storage tank 311 is connected to a low pressure hydrogenation unit 21 through a low pressure delivery pipe 211, and a first control valve 212 is provided on the low pressure delivery pipe 211 to control communication between the low pressure hydrogen storage tank 311 and the low pressure hydrogenation unit 21. Each low-pressure hydrogen storage tank 311 is provided with a first control valve 212, so that the low-pressure hydrogenation unit 21 can only be communicated with one of the low-pressure hydrogen storage tanks 311 when hydrogenation is performed, and the problem of accident when hydrogenation is caused due to the communication with a plurality of low-pressure hydrogen storage tanks 311 can not occur. The first control valve 212 may be a valve body such as a solenoid valve, which can control the on/off of the low pressure delivery pipe 211, or may be other control valves known to those skilled in the art, and will not be described in detail herein. When hydrogenation is performed, only one of the first control valves 212 is opened to communicate the low-pressure hydrogen storage tank 311 with the low-pressure hydrogenation unit 21, and after the hydrogenation is completed, the first control valve 212 is closed to disconnect the communication between the low-pressure hydrogenation unit 21 and the low-pressure hydrogen storage tank 311.
In one embodiment of the present disclosure, referring to fig. 1, the high-pressure hydrogen storage unit 32 includes a plurality of high-pressure hydrogen storage tanks 321 and a high-pressure compressor 322 for communicating the high-pressure hydrogen storage tanks 321 with a hydrogen source, and the high-pressure compressor 322 is provided with at least one, but may be provided with a plurality of high-pressure compressors, which are respectively connected with each high-pressure hydrogen storage tank 321, so as to accelerate the hydrogen storage efficiency of the high-pressure hydrogen storage unit 32. In the present embodiment, two high-pressure hydrogen storage tanks 321 are provided, one high-pressure compressor 322 is provided, and the high-pressure compressors 322 are connected to the two high-pressure hydrogen storage tanks 321, respectively, although the number of high-pressure hydrogen storage tanks 321 and the number of high-pressure compressors 322 may be other in other embodiments, which is not limited in this disclosure. In the case of hydrogen storage, the hydrogen storage process is similar to that of the low-pressure hydrogen storage unit 31 described above, and will not be described in detail.
In one embodiment of the present disclosure, referring to fig. 1, a high pressure hydrogen storage tank 321 is connected to a high pressure hydrogenation unit 22 through a high pressure delivery pipe 221, and a second control valve 222 is provided on the high pressure delivery pipe 221 to control communication between the high pressure hydrogen storage tank 321 and the high pressure hydrogenation unit 22. Each high-pressure hydrogen storage tank 321 is respectively provided with a second control valve 222, so that the high-pressure hydrogenation unit 22 can only be communicated with one of the high-pressure hydrogen storage tanks 321 when hydrogenation is performed, and the problem of accident during hydrogenation caused by the communication with a plurality of high-pressure hydrogen storage tanks 321 can not occur. The second control valve 222 may be a valve body such as a solenoid valve, which can control the on/off of the high pressure delivery pipe 221, or may be other control valves known to those skilled in the art, and will not be described in detail herein. In the case of hydrogenation, the hydrogenation process is similar to that of the low-pressure hydrogen storage unit 31 described above, and will not be described in detail.
In one embodiment of the present disclosure, referring to fig. 1, the connection device 4 includes a connection pipe 41, and the control valve group includes a third control valve 411 and a one-way check valve 412 provided on the connection pipe 41. In this way, when the hydrogenation is performed on the equipment to be hydrogenated which needs high pressure, the first control valve 222 in the low-pressure hydrogen storage unit 31 needs to be opened, then the third control valve 411 positioned on the connecting pipeline 41 is opened, then the low-pressure hydrogen storage tank 311 can be communicated with the high-pressure hydrogenation unit 22, hydrogen is introduced into the equipment to be hydrogenated, and the problem that the low-pressure hydrogen storage unit 31 cannot be disconnected with the high-pressure hydrogenation unit 22 due to the failure of the first control valve 222 in the hydrogenation process or at other time is avoided, so that equipment failure is caused. Since the high pressure delivery pipe 221 in the high pressure hydrogen storage unit 32 is different from the low pressure delivery pipe 211 in the low pressure hydrogen storage unit 31 in the pressure, if the high pressure hydrogen in the high pressure hydrogen storage unit 32 enters the low pressure delivery pipe 211, the low pressure delivery pipe 211 may be broken, and the high pressure hydrogen in the high pressure hydrogen storage unit 32 can be prevented from entering the low pressure hydrogen storage unit 31 by the unidirectional check valve 412, thereby improving the safety of the hydrogenation system in the hydrogenation process.
In one embodiment of the present disclosure, referring to fig. 1, the connection device 4 further includes a safety valve 42, and the safety valve 42 is bypassed on the connection pipe 41. By providing the safety valve 42, after the air pressure in the connecting pipeline 41 rises due to some external factors or the occurrence of faults of equipment in the hydrogenation system, the pressure of the connecting pipeline 41 can be relieved in time, and the connecting pipeline 41 is prevented from being broken. For example, when the first control valve 212 and the third control valve 411 fail, the hydrogen in the low-pressure hydrogen storage tank 311 is always filled into the connecting pipeline 41 to raise the air pressure in the connecting pipeline 41, and when the air pressure in the connecting pipeline 41 reaches the preset value of the safety valve 42, the safety valve 42 is opened to release the hydrogen in the connecting pipeline 41, so that the air pressure in the connecting pipeline 41 can be timely reduced, and the breakage of the connecting pipeline 41 caused by the over-high air pressure is avoided.
In one embodiment of the present disclosure, referring to fig. 1, the connection device 4 further comprises a pressure gauge 43 and a shut-off valve 44. The manometer 43 is connected on the connecting pipe 41 and is communicated with the connecting pipe 41, the air pressure in the connecting pipe 41 can be detected through the manometer 43, and when the air pressure in the connecting pipe 41 is too high or too low, the air pressure can be visually represented through the numerical value of the manometer 43, so that when a worker checks the connecting device 4 in the hydrogenation system, the air pressure condition in the connecting pipe 41 can be known more. The stop valve 44 is arranged on a pipeline which is connected with the pressure gauge 43 and the connecting pipeline 41, so that the connection between the pressure gauge 43 and the connecting pipeline 41 can be stopped, when the pressure gauge 43 breaks down and needs to be overhauled, the stop valve 44 needs to be opened, the connection between the pressure gauge 43 and the connecting pipeline 41 is disconnected, and the pressure gauge is convenient for workers to overhaul and replace.
In one embodiment of the present disclosure, referring to fig. 1, the connection device 4 further includes a pressure relief portion 45, through which the hydrogenation system can be depressurized. The pressure release part 45 is connected to the connecting pipe 41, the pressure release part 45 may be formed by a needle valve and an electromagnetic valve, when the connecting pipe 41 needs to be replaced after long-time use, the first control valve 212 and the third control valve 412 need to be closed, then the needle valve and the electromagnetic valve are opened to discharge the hydrogen in the connecting pipe 41 to complete pressure release, and finally the new connecting pipe 41 is replaced into the hydrogenation system. Of course, when other pipelines connected with the connecting pipeline 41 are damaged or need to be replaced after long-time working, the pressure of the connecting pipeline 41 and other pipelines connected with the connecting pipeline need to be relieved through the pressure relief part 45, so that the replacement of the pipelines is safer and more convenient.
When low pressure hydrogen or high pressure hydrogen flows in the low pressure delivery pipe 211 or the high pressure delivery pipe 221, frequent flow and pressure changes may cause temperature increase of the low pressure delivery pipe 211 and the high pressure delivery pipe 221, and when the temperature increases to a certain extent, explosion of the low pressure delivery pipe 211 and the high pressure delivery pipe 221 may be caused, thereby causing safety accidents. To solve the above-described problem, in one embodiment of the present disclosure, referring to fig. 1, a first heat exchanger 51 is provided between the gas outlet end of the low-pressure hydrogen storage unit 31 and the low-pressure hydrogenation unit 21, and a second heat exchanger 52 is provided between the gas outlet end of the high-pressure hydrogen storage unit 32 and the high-pressure hydrogenation unit 22. The low-pressure conveying pipeline 211 and the high-pressure conveying pipeline 221 can be cooled through the first heat exchanger 51 and the second heat exchanger 52, the temperatures in the low-pressure conveying pipeline 211 and the high-pressure conveying pipeline 221 are kept within a safe range, and therefore the safety of the whole hydrogenation system can be improved, and the occurrence of safety accidents is reduced.
The hydrogenation system of the present disclosure, when in use, is divided into hydrogenating the equipment to be hydrogenated that requires either low pressure or high pressure. When the hydrogenation is performed on the equipment to be hydrogenated which needs low pressure, the first control valve 212 is opened, the low-pressure hydrogen storage tank 311 connected with the low-pressure control valve 212 is communicated with the low-pressure hydrogenation unit 21, hydrogenation is performed on the equipment to be hydrogenated through the low-pressure hydrogenation unit 21, hydrogenation is completed after a period of time, and then the first control valve 212 is closed, so that the communication between the low-pressure hydrogen storage tank 311 and the low-pressure hydrogenation unit 21 is disconnected. In the hydrogenation process, the temperature of the low-pressure conveying pipeline 211 can be reduced through the first heat exchanger 51, so that the temperature of the low-pressure conveying pipeline 211 is kept in a safe range.
When the hydrogenation is performed on the equipment to be hydrogenated which needs high pressure, the first control valve 212 and the third control valve 411 are opened first, the low-pressure hydrogen storage tank 311 which is communicated with the first control valve 212 is communicated with the high-pressure hydrogenation unit 22, the low-pressure hydrogen in the low-pressure hydrogen storage tank 311 is firstly introduced into the equipment to be hydrogenated, when the air pressure in the equipment to be hydrogenated reaches a certain level, the first control valve 212 and the third control valve 411 are closed, the connection between the low-pressure hydrogen storage unit 31 and the high-pressure hydrogenation unit 22 is disconnected, the second control valve 222 is opened again, the high-pressure hydrogen storage tank 321 which is communicated with the second control valve 222 is communicated with the high-pressure hydrogenation unit 22, the high-pressure hydrogen in the high-pressure hydrogen storage tank 321 is introduced into the equipment to be hydrogenated until the hydrogenation of the equipment to be hydrogenated is completed, and then the second control valve 222 is closed, so that the communication between the high-pressure hydrogen storage tank 321 and the high-pressure hydrogenation unit 22 is disconnected. In the hydrogenation process, the air pressure in the connecting pipeline 41 can be monitored through the safety valve 42, the pressure gauge 43, the second heat exchanger 52 and other devices in the connecting device 4, so that the safety of the whole hydrogenation system can be ensured. According to the hydrogenation system, the low-pressure hydrogen storage unit 31 and the high-pressure hydrogen storage unit 32 are used in a combined mode, the use frequency of the high-pressure hydrogen storage unit 32 can be reduced in the hydrogenation process, the use speed of hydrogen in the high-pressure hydrogen storage unit 32 is slowed down, a compressor is not required to be started frequently, the high-pressure hydrogen storage tank 321 is subjected to pressure supplementing, energy consumption is reduced, the service life of equipment is prolonged, and the hydrogenation system has extremely high safety.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A hydrogenation system, comprising:
a hydrogen source;
the hydrogenation device comprises a low-pressure hydrogenation unit and a high-pressure hydrogenation unit, and is used for hydrogenating equipment to be hydrogenated;
the hydrogen storage device comprises a low-pressure hydrogen storage unit and a high-pressure hydrogen storage unit, wherein the air inlet end of the low-pressure hydrogen storage unit is communicated with the hydrogen source, the air outlet end of the low-pressure hydrogen storage unit is communicated with the low-pressure hydrogenation unit, the air inlet end of the high-pressure hydrogen storage unit is communicated with the hydrogen source, and the air outlet end of the high-pressure hydrogen storage unit is communicated with the high-pressure hydrogenation unit;
and the connecting device is used for communicating the air outlet end of the low-pressure hydrogen storage unit with the air outlet end of the high-pressure hydrogen storage unit and is provided with a control valve group, and the control valve group is configured to enable the high-pressure hydrogenation unit to be selectively communicated with the low-pressure hydrogen storage unit or the high-pressure hydrogen storage unit.
2. The hydrogenation system of claim 1, wherein the low pressure hydrogen storage unit comprises a plurality of low pressure hydrogen storage tanks and a low pressure compressor that communicates the low pressure hydrogen storage tanks with the hydrogen source.
3. The hydrogenation system according to claim 2, wherein each low-pressure hydrogen storage tank is connected with the low-pressure hydrogenation unit through a low-pressure conveying pipe, and a first control valve for controlling on-off of the low-pressure conveying pipe is arranged on the low-pressure conveying pipe.
4. The hydrogenation system of claim 1, wherein the high pressure hydrogen storage unit comprises a plurality of high pressure hydrogen storage tanks and a high pressure compressor that communicates the high pressure hydrogen storage tanks with the hydrogen source.
5. The hydrogenation system according to claim 4, wherein each high-pressure hydrogen storage tank is connected with the high-pressure hydrogenation unit through a high-pressure conveying pipeline, and a second control valve for controlling on-off of the high-pressure conveying pipeline is arranged on the high-pressure conveying pipeline.
6. The hydrogenation system of claim 1, wherein said connecting means comprises a connecting conduit, said control valve block comprises a third control valve disposed on said connecting conduit for controlling said low pressure hydrogen storage unit to selectively communicate with said high pressure hydrogenation unit and a one-way check valve for preventing said high pressure hydrogen storage unit from communicating with said low pressure hydrogenation unit.
7. The hydrogenation system of claim 6, wherein said connection means further comprises a safety valve, said safety valve being flanked on said connection conduit for pressure relief when the gas pressure in said connection means reaches a predetermined value.
8. The hydrogenation system of claim 6, wherein said connection means further comprises a pressure gauge and a shut-off valve, said pressure gauge being attached to said connection conduit for measuring the pressure in said connection conduit, said shut-off valve being located between said pressure gauge and said connection conduit for disconnecting said pressure gauge from said connection conduit.
9. The hydrogenation system of claim 6, wherein the connection device further comprises a pressure relief portion that is bypassed on the connection pipe for pressure relief of the hydrogenation system.
10. The hydrogenation system of claim 1, wherein a first heat exchanger is disposed between the outlet end of the low pressure hydrogen storage unit and the low pressure hydrogenation unit, a second heat exchanger is disposed between the outlet end of the high pressure hydrogen storage unit and the high pressure hydrogenation unit, and the first heat exchanger and the second heat exchanger are used for cooling hydrogen in the hydrogenation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212175.XU CN219828529U (en) | 2023-05-18 | 2023-05-18 | Hydrogenation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212175.XU CN219828529U (en) | 2023-05-18 | 2023-05-18 | Hydrogenation system |
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| CN219828529U true CN219828529U (en) | 2023-10-13 |
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| CN202321212175.XU Active CN219828529U (en) | 2023-05-18 | 2023-05-18 | Hydrogenation system |
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| CN (1) | CN219828529U (en) |
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