CN210167443U - Hydrogen recovery device for fuel cell stack - Google Patents
Hydrogen recovery device for fuel cell stack Download PDFInfo
- Publication number
- CN210167443U CN210167443U CN201920799845.XU CN201920799845U CN210167443U CN 210167443 U CN210167443 U CN 210167443U CN 201920799845 U CN201920799845 U CN 201920799845U CN 210167443 U CN210167443 U CN 210167443U
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- Prior art keywords
- water
- communicated
- fuel cell
- remover
- hydrogen recovery
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 71
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 71
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000011084 recovery Methods 0.000 title claims abstract description 33
- 239000000446 fuel Substances 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 77
- 229920000642 polymer Polymers 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 26
- 238000010992 reflux Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 156
- 239000007788 liquid Substances 0.000 claims description 24
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 7
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002274 desiccant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
Abstract
The utility model discloses a fuel cell galvanic pile hydrogen recovery device, which comprises a galvanic pile, a conveying pipeline, a reflux pump and a hydrogen recovery mechanism; the electric pile is provided with a gas inlet and a gas outlet, the gas inlet and the gas outlet are communicated through a conveying pipeline, and the conveying pipeline is provided with a hydrogen injection port; the reflux pump is communicated with the conveying pipeline, and the gas inlet and the hydrogen injection port are both connected and communicated with the output end of the reflux pump; the hydrogen recovery mechanism is arranged in a pipeline communicated with the gas outlet and the input end of the reflux pump; the hydrogen recovery mechanism comprises a dryer and a polymer separation tank, wherein the input end of the dryer is connected and communicated with the gas outlet, the output end of the dryer is connected and communicated with the input end of the polymer separation tank, and the output end of the polymer separation tank is connected and communicated with the input end of the reflux pump; the scheme can realize the recycling of hydrogen, the phenomenon of discharging a large amount of hydrogen does not exist in the whole process, and the utilization rate of the hydrogen is greatly improved.
Description
Technical Field
The utility model relates to a fuel cell's technical field, in particular to fuel cell pile hydrogen recovery unit.
Background
At present, the hydrogen side of the hydrogen fuel electric pile mixes water vapor and part of N after hydrogen reaction2、CO、CO2Wait gaseous, can influence reaction efficiency after gaseous impurity increases, so must increase a tail outlet, with gaseous impurity discharge pile, the tail gas is discharged to the mode of the direct evacuation of current universal adoption, and a large amount of reaction gas hydrogen also discharges away simultaneously when discharging gaseous impurity, makes whole utilization efficiency unable reach, extravagant energy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fuel cell pile hydrogen recovery unit to solve the not high problem of prior art hydrogen utilization ratio.
In order to solve the technical problem, the utility model provides a hydrogen recovery device of a fuel cell stack, which is characterized in that the stack is provided with a gas inlet and a gas outlet; the gas inlet and the gas outlet are communicated through the conveying pipeline, and the conveying pipeline is provided with a hydrogen injection port; the reflux pump is communicated with the conveying pipeline, and the gas inlet and the hydrogen injection port are both connected and communicated with the output end of the reflux pump; the hydrogen recovery mechanism is communicated with the conveying pipeline and is arranged in a pipeline communicated with the gas outlet and the input end of the reflux pump; the hydrogen recovery mechanism is including being used for absorbent desicator and being used for following separate the polymer knockout drum of hydrogen output among the galvanic pile exhaust gas, the input of desicator with gas outlet connects and switches on, the output of desicator with the input of polymer knockout drum is connected and is switched on, the output of polymer knockout drum with the input of backwash pump is connected and is switched on.
Wherein, the desicator includes liquid water remover and gaseous state water remover, the input of liquid water remover with the gas outlet connection switches on, the output of liquid water remover with the input of gaseous state water remover is connected and switches on, the output of gaseous state water remover with the input of polymer knockout drum is connected and switches on.
Wherein the liquid water remover comprises a gas-guide tube and a water-removing tank; the input end of the air duct is communicated with the gas outlet, and the output end of the air duct is inserted into the water removing tank; the inside of except that the water pitcher is used for saving dewatering liquid, except that the output of water pitcher with the inside of except that the water pitcher switches on, except that the output of water pitcher with the input of gaseous state water remover is connected and switches on.
Wherein, the bottom of the dewatering tank is provided with a water outlet which is provided with a drain valve; an upper water level limit sensor and a lower water level limit sensor are arranged inside the water removal tank, and the lower water level limit sensor is arranged between the upper water level limit sensor and the bottom of the water removal tank; when the water level upper limit sensor reflects that the water level reaches the upper limit position, the fuel cell stack hydrogen recovery device controls the drain valve to be opened; and when the water level lower limit sensor reflects that the water level reaches the lower limit position, the fuel cell stack hydrogen recovery device controls the drain valve to be closed.
Wherein, gaseous state water remover inside is equipped with dry piece, dry piece is located the input of gaseous state water remover with between the output of gaseous state water remover, dry piece is used for absorbing water.
The drying piece is a sulfonic acid pipe, and the sulfonic acid pipe is communicated between the input end and the output end of the gaseous water remover.
Wherein, gaseous water remover is equipped with dry air inlet and humid air outlet, dry air inlet with humid air outlet all with gaseous water remover holds the space of sulfonic acid pipe switches on.
The polymer separation tank is internally provided with a polymer separation membrane, the polymer separation tank is provided with a tail gas discharge port, and the tail gas discharge port is communicated with the inside of the polymer separation tank.
The utility model has the advantages as follows:
when carrying out the during operation, hydrogen will be followed in the hydrogen filling opening inputs to conveying pipeline, then enter into the inside reaction that reacts of galvanic pile through gas inlet, gas after the reaction will be exported from the gas outlet and carry out the drying and absorb water to the desicator, gas after absorbing water reentrants to high molecule knockout drum and separate, the high molecule knockout drum can be followed in the gas at this moment and is separated hydrogen output to the backwash pump, thereby realize the recycle of hydrogen through the backwash pump, whole process does not have the phenomenon with hydrogen a large amount of discharges, the utilization ratio of hydrogen has been improved greatly.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram provided by a preferred embodiment of the fuel cell stack hydrogen recovery device of the present invention;
fig. 2 is a schematic structural diagram of a hydrogen recovery mechanism provided by a preferred embodiment of the fuel cell stack hydrogen recovery device of the present invention.
The reference numbers are as follows:
1. a galvanic pile; 11. a gas inlet; 12. a gas outlet;
2. a delivery line; 21. a hydrogen gas injection port;
3. a reflux pump;
4. a hydrogen recovery mechanism;
41. a dryer; 42. a polymer separation tank; 421. a polymeric separation membrane; 422. a tail gas discharge port;
43. a liquid water remover; 431. an air duct; 432. a water removal tank; 433. a water outlet; 434. a drain valve; 435. an upper water level limit sensor; 436. a water level lower limit sensor;
44. a gaseous water remover; 441. a sulfonic acid tube; 442. a dry air inlet; 443. and a wet air outlet.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As can be seen from fig. 1 to 2, a fuel cell stack hydrogen recovery apparatus according to an embodiment of the present invention includes a stack 1, where the stack 1 is provided with a gas inlet 11 and a gas outlet 12; the gas inlet 11 and the gas outlet 12 are communicated through the conveying pipeline 2, and the conveying pipeline 2 is provided with a hydrogen injection port 21; the reflux pump 3 is communicated with the conveying pipeline 2, and the gas inlet 11 and the hydrogen injection port 21 are both connected and communicated with the output end of the reflux pump 3; the hydrogen recovery mechanism 4 is communicated with the conveying pipeline 2, and the hydrogen recovery mechanism 4 is arranged in a pipeline communicated with the gas outlet 12 and the input end of the reflux pump 3; hydrogen retrieves mechanism 4 is including being used for absorbing water desicator 41 and being used for following the polymer knockout drum 42 of separation hydrogen output in the gaseous effluent of galvanic pile 1, desicator 41's input with gas outlet 12 is connected and is switched on, desicator 41's output with polymer knockout drum 42's input is connected and is switched on, polymer knockout drum 42's output with the input of backwash pump 3 is connected and is switched on.
When carrying out the during operation, hydrogen will be from hydrogen filling opening 21 input to conveying line 2 in, then enter into the inside reaction that carries out of galvanic pile 1 through gas inlet 11, gas after the reaction will be exported from gas outlet 12 to desicator 41 and carry out the drying and absorb water, gas after absorbing water reentrants high molecule knockout drum 42 and separates, high molecule knockout drum 42 can follow in the gas separation hydrogen output to backwash pump 3 this moment, thereby realize the recycle of hydrogen through backwash pump 3, whole process does not exist with the phenomenon of hydrogen a large amount of emissions, the utilization ratio of hydrogen has been improved greatly.
It should be noted that the dryer 41 is used for drying and absorbing water, and the dryer 41 may be used for simply absorbing liquid water or gaseous water, but in order to optimize the effect of drying and absorbing water, both liquid water and gaseous water in the gas should be removed, as shown in fig. 1 and fig. 2, one embodiment may be that the dryer 41 includes a liquid water remover 43 and a gaseous water remover 44, an input end of the liquid water remover 43 is connected and communicated with the gas outlet 12, an output end of the liquid water remover 43 is connected and communicated with an input end of the gaseous water remover 44, and an output end of the gaseous water remover 44 is connected and communicated with an input end of the polymer separation tank 42.
In application, the gas discharged from the stack 1 enters the liquid water remover 43 to absorb the liquid water in the gas, and then the gas with the absorbed liquid water enters the gaseous water remover 44 to absorb the gaseous water in the gas, i.e. two different drying and water absorbing operations are performed in this way, so as to ensure the optimization of the drying and water absorbing effect.
In which, there are various ways to realize the liquid water absorption, such as using various drying agents to absorb water, as shown in fig. 1 and fig. 2, a preferred embodiment may be that the liquid water remover 43 includes an air duct 431 and a water removing tank 432; the input end of the gas guide tube 431 is connected and communicated with the gas outlet 12, and the output end of the gas guide tube 431 is inserted into the dewatering tank 432; the interior of the dewatering tank 432 is used for storing dewatering liquid, the output end of the dewatering tank 432 is communicated with the interior of the dewatering tank 432, and the output end of the dewatering tank 432 is connected and communicated with the input end of the gaseous water remover 44.
When in application, the water removal tank 432 is filled with water until the water can submerge the port of the air duct 431; after gas discharged from the galvanic pile 1 enters the dewatering tank 432 through the gas guide tube 431, liquid water in the gas is combined with water in the dewatering tank 432, and only the gas can float upwards and is discharged out of the dewatering tank 432, so that the liquid water is removed; the method has the advantages that a drying agent is not required to be utilized, the water removal process is clean and environment-friendly, and energy consumption is not required.
As the usage time increases, the water absorbed inside the dewatering tank 432 increases, so it is also important to control the amount of water inside the dewatering tank 432 in time, as shown in fig. 2, a preferred embodiment may be that a water outlet 433 is provided at the bottom of the dewatering tank 432, and the water outlet 433 is provided with a drain valve 434; an upper water level sensor 435 and a lower water level sensor 436 are arranged inside the dewatering tank 432, and the lower water level sensor 436 is arranged between the upper water level sensor 435 and the bottom of the dewatering tank 432; when the upper water level sensor 435 reflects that the water level reaches the upper limit position, the fuel cell stack hydrogen recovery device controls the drain valve 434 to open; when the water level lower limit sensor 436 reflects that the water level reaches the lower limit position, the fuel cell stack hydrogen recovery device controls the drain valve 434 to close.
In application, if the water level does not reach the position of the upper water level sensor 435 but the lower water level sensor 436 is submerged, it indicates that the water level is within a reasonable range, and the drain valve 434 is in a closed state; when the water level reaches the position of the upper water level limit sensor 435, it indicates that the water level is too high, the drain valve 434 is opened to drain water until the water level reaches the position of the lower water level limit sensor 436, which indicates that the water level is low, the drain valve 434 is closed to stop draining water, and by repeating the above operation, the automatic control of the water level inside the water removing tank 432 can be realized.
In addition, there are various ways to achieve the removal of the gaseous water, such as water absorption by using various drying agents, and as shown in fig. 2, a preferred embodiment may be to provide a drying member inside the gaseous water remover 44, the drying member being provided between the input end of the gaseous water remover 44 and the output end of the gaseous water remover 44, the drying member being used for water absorption.
In use, the gas with the gaseous water will enter the interior of the gaseous water remover 44 and, by contact with the drying element, the drying element will absorb the gaseous water from the gas so that the dried gas is discharged through the output end of the gaseous water remover 44.
In order to improve the efficiency of the absorption of the gaseous water, as shown in fig. 2, a preferred embodiment may be to provide the drying member as a sulfonic acid pipe 441, and the sulfonic acid pipe 441 is connected between the input end and the output end of the gaseous water remover 44.
In application, the gas with the gaseous water flows into the sulfonic acid pipe 441, the gaseous water is absorbed by the sulfonic acid pipe 441 in the flowing process, and the gas is in a dry state when being discharged through the sulfonic acid pipe 441 because the water absorption efficiency of the sulfonic acid pipe 441 is high.
Note that the sulfonic acid pipe 441 absorbs water to penetrate the outer surface thereof, so in order to ensure the water absorption effect of the sulfonic acid pipe 441, the sulfonic acid pipe 441 should absorb the water in time, as shown in fig. 2, a preferred embodiment may be that the gaseous water remover 44 is provided with a dry air inlet 442 and a wet air outlet 443, and both the dry air inlet 442 and the wet air outlet 443 are communicated with the space of the gaseous water remover 44 accommodating the sulfonic acid pipe 441.
In application, the dry air inlet 442 continuously feeds dry air into the interior of the gaseous water remover 44, and when the dry air flows to the surface of the sulfonic acid pipe 441, moisture will adhere to the dry air, i.e., the dry air will carry the moisture out of the wet air outlet 443, so as to avoid the moisture accumulation on the surface of the sulfonic acid pipe 441, thereby providing an important guarantee for the water absorption efficiency of the sulfonic acid pipe 441.
Furthermore, the manner of implementing hydrogen separation is various, and as shown in fig. 2, a preferred embodiment may be that a polymer separation membrane 421 is disposed inside the polymer separation tank 42, the polymer separation tank 42 is provided with an exhaust gas discharge port 422, and the exhaust gas discharge port 422 is communicated with the inside of the polymer separation tank 42.
When the hydrogen-containing gas is applied, the gas can contact with the polymer separation membrane 421, and due to different gas permeability, the polymer separation membrane 421 can separate the hydrogen and send the hydrogen to the output end of the polymer separation tank 42 for discharge, and other gases are separated by the polymer separation membrane 421 and sent to the tail gas discharge port 422 for discharge, so that the hydrogen recycling is realized.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. A fuel cell stack hydrogen recovery device is characterized by comprising,
the galvanic pile is provided with a gas inlet and a gas outlet;
the gas inlet and the gas outlet are communicated through the conveying pipeline, and the conveying pipeline is provided with a hydrogen injection port;
the reflux pump is communicated with the conveying pipeline, and the gas inlet and the hydrogen injection port are both connected and communicated with the output end of the reflux pump;
the hydrogen recovery mechanism is communicated with the conveying pipeline and is arranged in a pipeline communicated with the gas outlet and the input end of the reflux pump; the hydrogen recovery mechanism is including being used for absorbent desicator and being used for following separate the polymer knockout drum of hydrogen output among the galvanic pile exhaust gas, the input of desicator with gas outlet connects and switches on, the output of desicator with the input of polymer knockout drum is connected and is switched on, the output of polymer knockout drum with the input of backwash pump is connected and is switched on.
2. The fuel cell stack hydrogen recovery device according to claim 1, wherein the dryer includes a liquid water remover and a gaseous water remover, an input end of the liquid water remover is connected and conducted to the gas outlet, an output end of the liquid water remover is connected and conducted to an input end of the gaseous water remover, and an output end of the gaseous water remover is connected and conducted to an input end of the polymer separation tank.
3. The fuel cell stack hydrogen recovery apparatus according to claim 2,
the liquid water remover comprises a gas guide pipe and a water removing tank;
the input end of the air duct is communicated with the gas outlet, and the output end of the air duct is inserted into the water removing tank;
the inside of except that the water pitcher is used for saving dewatering liquid, except that the output of water pitcher with the inside of except that the water pitcher switches on, except that the output of water pitcher with the input of gaseous state water remover is connected and switches on.
4. The fuel cell stack hydrogen recovery apparatus according to claim 3,
a water outlet is formed in the bottom of the water removal tank, and a drain valve is arranged on the water outlet; an upper water level limit sensor and a lower water level limit sensor are arranged inside the water removal tank, and the lower water level limit sensor is arranged between the upper water level limit sensor and the bottom of the water removal tank;
when the water level upper limit sensor reflects that the water level reaches the upper limit position, the fuel cell stack hydrogen recovery device controls the drain valve to be opened;
and when the water level lower limit sensor reflects that the water level reaches the lower limit position, the fuel cell stack hydrogen recovery device controls the drain valve to be closed.
5. The fuel cell stack hydrogen recovery apparatus according to claim 2, wherein a drying member is provided inside the gaseous water remover, the drying member being provided between an input end of the gaseous water remover and an output end of the gaseous water remover, the drying member being configured to absorb water.
6. The fuel cell stack hydrogen recovery device of claim 5, wherein the drying member is a sulfonic acid pipe, and the sulfonic acid pipe is connected between the input end and the output end of the gaseous water remover.
7. The fuel cell stack hydrogen reclamation apparatus of claim 6, wherein the gaseous water remover is provided with a dry air inlet and a wet air outlet, both of which are in communication with a space of the gaseous water remover in which the sulfonic acid pipe is accommodated.
8. The fuel cell stack hydrogen recovery device according to claim 1, wherein a polymer separation membrane is provided inside the polymer separation tank, and the polymer separation tank is provided with a tail gas discharge port that is in communication with the inside of the polymer separation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799845.XU CN210167443U (en) | 2019-05-28 | 2019-05-28 | Hydrogen recovery device for fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799845.XU CN210167443U (en) | 2019-05-28 | 2019-05-28 | Hydrogen recovery device for fuel cell stack |
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| Publication Number | Publication Date |
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| CN210167443U true CN210167443U (en) | 2020-03-20 |
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| CN201920799845.XU Active CN210167443U (en) | 2019-05-28 | 2019-05-28 | Hydrogen recovery device for fuel cell stack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336055A (en) * | 2019-05-28 | 2019-10-15 | 深圳国氢新能源科技有限公司 | Fuel cell pile hydrogen gas recovering device |
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2019
- 2019-05-28 CN CN201920799845.XU patent/CN210167443U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336055A (en) * | 2019-05-28 | 2019-10-15 | 深圳国氢新能源科技有限公司 | Fuel cell pile hydrogen gas recovering device |
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Assignee: China Hydrogen New Energy (Shenzhen) New Technology Co.,Ltd. Assignor: SHENZHEN GUOQING NEW ENERGY TECHNOLOGY CO.,LTD. Contract record no.: X2024980003927 Denomination of utility model: Fuel cell stack hydrogen recovery device Granted publication date: 20200320 License type: Exclusive License Record date: 20240407 |