CN220856628U - Hydrogen source system based on hydrogen storage pyrolysis - Google Patents
Hydrogen source system based on hydrogen storage pyrolysis Download PDFInfo
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- CN220856628U CN220856628U CN202322430729.XU CN202322430729U CN220856628U CN 220856628 U CN220856628 U CN 220856628U CN 202322430729 U CN202322430729 U CN 202322430729U CN 220856628 U CN220856628 U CN 220856628U
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 260
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 260
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 245
- 238000003860 storage Methods 0.000 title claims abstract description 64
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 28
- 230000003197 catalytic effect Effects 0.000 claims abstract description 84
- 239000011232 storage material Substances 0.000 claims abstract description 28
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 67
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000003054 catalyst Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 238000007084 catalytic combustion reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 7
- 238000006555 catalytic reaction Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to a hydrogen source system based on hydrogen storage pyrolysis, comprising: the hydrogen storage device comprises a catalytic chamber, a hydrogen cell stack, a hydrogen cache bottle and a pipeline group; the pipeline group comprises an air inlet pipe, a hydrogen inlet pipe and a hydrogen outlet pipe, wherein the air inlet pipe sends air into the catalytic chamber, the hydrogen inlet pipe is communicated with the hydrogen cache bottle and the catalytic chamber, hydrogen is sent into the catalytic chamber, and the hydrogen outlet pipe is respectively communicated with the catalytic chamber and the hydrogen cell stack, and the catalytic chamber and the hydrogen cache bottle; the catalytic chamber comprises a hydrogen storage bottle and a catalytic component encircling the outer wall of the hydrogen storage bottle, and hydrogen storage materials to be pyrolyzed are contained in the hydrogen storage bottle. The hydrogen source system provided by the utility model realizes self heat supply for pyrolysis of the hydrogen storage material, and realizes microminiaturization and safe operation of hydrogen catalytic combustion.
Description
Technical Field
The utility model belongs to the technical field of hydrogen energy storage, and particularly relates to a hydrogen source system based on hydrogen storage pyrolysis.
Background
Electric vehicles play an important role in national economy by saving and protecting energy and environment. However, at present, the batteries of the electric vehicle are firstly faced with the problem of spontaneous combustion safety in the charging process, and secondly faced with the problem of disposal of waste batteries. A highly safe and pollution-free hydrogen fuel cell may be a power scheme for future electric vehicles.
However, high-pressure gas hydrogen has high pressure, insufficient safety, high cost of liquid hydrogen and uneconomical, and related researches exist at present to prepare a hydrogen fuel cell for solid hydrogen storage, which is a heat source for discharging hydrogen from a solid material in an electric heating mode.
For example, patent CN114031036a provides a self-heating magnesium-based hydrogen storage system, a hydrogen storage method and a hydrogen production method, and the method is to connect a hydrogen storage tank, a catalytic reaction chamber and a hydrogen storage source device in pairs, and simultaneously add a compressed air machine to provide air for the catalytic reaction chamber, so as to realize self-heating when using magnesium-based materials for hydrogen storage and hydrogen production. However, when the method supplies hydrogen to the catalytic reaction chamber, the hydrogen storage source is required to continuously supply hydrogen, so that the requirement on the capacity of the hydrogen storage source is high and the frequency of replacing the hydrogen source is frequent.
Therefore, how to strengthen the hydrogen recycling in the hydrogen storage and production system and realize the self-heat supply of the hydrogen storage pyrolysis becomes a technical problem to be solved in the field.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model provides the initial hydrogen for the catalytic chamber through the hydrogen buffer bottle, the initial hydrogen and the air pumped into the catalytic chamber burn and release heat under the catalysis effect to supply heat for the pyrolysis of the hydrogen storage material, one part of the hydrogen released by the pyrolysis of the hydrogen storage material enters the hydrogen pile to be used as power supply, and the other part of the hydrogen enters the hydrogen buffer bottle to continuously supply hydrogen for the catalytic chamber, so that the self-heating circulating hydrogen source system based on the hydrogen storage pyrolysis is realized, the number of times of replacing the gas source is reduced, the volume of the hydrogen source system is reduced, and the energy consumption of the system is reduced.
The present utility model provides a method comprising: a catalytic chamber 1, a hydrogen cell stack 2, a hydrogen buffer bottle 3 and a pipeline group 4;
The pipeline group 4 comprises an air inlet pipe 41, a hydrogen inlet pipe 42 and a hydrogen outlet pipe 43, wherein the air inlet pipe 41 is used for feeding air into the catalytic chamber 1, the hydrogen inlet pipe 42 is used for communicating the hydrogen cache bottle 3 with the catalytic chamber 1 and feeding hydrogen into the catalytic chamber 1, and the hydrogen outlet pipe 43 is used for communicating the catalytic chamber 1 with the hydrogen stack 2 and the catalytic chamber 1 with the hydrogen cache bottle 3 respectively;
The catalytic chamber 1 comprises a hydrogen storage bottle 11 and a catalytic component 12 surrounding the outer wall of the hydrogen storage bottle 11, and hydrogen storage materials to be pyrolyzed are contained in the hydrogen storage bottle 11.
Further, the catalytic component 12 is a wire mesh, the wire mesh is arranged between the catalytic chamber inner wall 14 and the hydrogen storage bottle 11, and the surfaces of the catalytic chamber inner wall 14 and the wire mesh are coated with a catalyst plating layer.
Further, the porosity of the metal wire mesh is 95-98%, the through hole rate is more than or equal to 98%, the single hole diameter is 0.1-10mm, the volume density is 0.1-0.8g/cm 3, and the metal wire mesh is made of stainless steel.
Further, the catalytic chamber 1 is round or pentagonal, the inner diameter of the catalytic chamber 1 is 300-400mm, the number of the hydrogen storage bottles 11 is 7-9, the inner diameter of the hydrogen storage bottles 11 is 78mm, the height is 150-250mm, and the thickness is 2-3mm;
The hydrogen storage bottle 11 is filled with hydrogen storage material to be pyrolyzed in solid state, in the shape of sheet or granule, the thickness of single sheet hydrogen storage material is 3-4mm, the diameter is 7-8mm, and the particle size of single granule hydrogen storage material is 300-500 μm.
Further, the hydrogen source system further comprises an air buffer 5 and an air pressure pump 6, and the air pressure pump 6 and the air buffer 5 are sequentially communicated with an air inlet pipe 41.
Further, the hydrogen source system further comprises a gas mixer 7, the gas inlet end of the gas mixer 7 is communicated with the air inlet pipe 41 and the hydrogen inlet pipe 42, and the gas outlet end is communicated with the catalytic chamber 1.
Further, a gas heat exchanger 8 is arranged between the catalytic chamber 1 and the gas mixer 7, the gas heat exchanger 8 is communicated with a cold pipe 44 and a heat pipe 45, the cold pipe 44 sends the mixed gas in the gas mixer 7 into the catalytic chamber 1 through the gas heat exchanger 8, and the heat pipe 45 returns the gas generated by the reaction of the catalytic chamber 1 to the gas mixer 8.
Further, a reaction filter 9 is disposed on the hydrogen outlet pipe 43, a pressure gauge 13 is further mounted on the catalytic chamber 1, and a flow meter 421 is disposed on the hydrogen inlet pipe 42.
Further, the hydrogen source system further comprises a controller 10, and the controller 10 is in signal connection with the pressure gauge 13 and the flow meter 421 for monitoring and controlling the gas.
Further, the pressure of the air buffer 5 is less than or equal to 3MPa, and the pressure of the hydrogen buffer 3 is less than or equal to 5MPa;
The reaction pressure in the catalytic chamber 1 is 0.1-0.5MPa, and the temperature is 400-450 ℃.
The hydrogen source system based on hydrogen storage pyrolysis provided by the utility model at least comprises the following beneficial effects:
(1) And part of hydrogen released by pyrolysis in the catalytic chamber enters the hydrogen stack to be used as power supply, and the other part of hydrogen circulates to the hydrogen cache bottle to continuously provide hydrogen for the catalytic chamber, so that hydrogen self-circulation is realized, the capacity requirement on the hydrogen cache bottle is reduced, and the replacement frequency of the hydrogen cache bottle is reduced.
(2) The gas heat exchanger is arranged, high-temperature steam generated by burning hydrogen and air is utilized to heat the mixed gas to be entered, and the temperature of the exhaust gas is reduced while the energy consumption of the system is reduced.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a schematic diagram of a hydrogen source system based on hydrogen storage pyrolysis in accordance with an embodiment of the present utility model;
fig. 2 is a schematic view of the internal structure of a catalytic chamber according to an embodiment of the present utility model.
Reference numerals illustrate: the device comprises a 1-catalytic chamber, a 11-hydrogen storage bottle, a 12-catalytic component, a 13-pressure gauge, a 14-catalytic chamber inner wall, a 15-hydrogen storage bottle outer wall, a 2-hydrogen electric pile, a 3-hydrogen cache bottle, a 4-pipeline group, a 41-air inlet pipe, a 42-hydrogen inlet pipe, a 421-flowmeter, a 43-hydrogen outlet pipe, a 44-cold pipe, a 45-heat pipe, a 5-air cache bottle, a 6-air pressure pump, a 7-gas mixer, an 8-gas heat exchanger, a 9-reaction filter and a 10-controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or device comprising such elements.
Alternative embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
The catalytic combustion of hydrogen is flameless combustion under the action of catalyst, can produce high temperature of 200-700 deg.C, and can heat hydrogen storage material. A hydrogen fuel cell for storing hydrogen can be designed, which is self-heating and does not need external heat source. The hydrogen released by the self is used as a part of the hydrogen source of the fuel cell and a part of the hydrogen source is used as the fuel for catalytic combustion.
Referring to fig. 1, the present utility model provides a hydrogen source system based on hydrogen storage pyrolysis, comprising: a catalytic chamber 1, a hydrogen cell stack 2, a hydrogen buffer bottle 3 and a pipeline group 4;
The pipeline group 4 comprises an air inlet pipe 41, a hydrogen inlet pipe 42 and a hydrogen outlet pipe 43, wherein the air inlet pipe 41 is used for feeding air into the catalytic chamber 1, the hydrogen inlet pipe 42 is used for communicating the hydrogen cache bottle 3 with the catalytic chamber 1 and feeding hydrogen into the catalytic chamber 1, and the hydrogen outlet pipe 43 is used for communicating the catalytic chamber 1 with the hydrogen stack 2 and the catalytic chamber 1 with the hydrogen cache bottle 3 respectively;
The catalytic chamber 1 comprises a hydrogen storage bottle 11 and a catalytic component 12 surrounding the outer wall 15 of the hydrogen storage bottle, hydrogen storage materials to be pyrolyzed are contained in the hydrogen storage bottle 11, and the hydrogen storage bottle 11 and the catalytic chamber 11 are isolated from each other.
According to the hydrogen source system provided by the utility model, hydrogen generated by pyrolysis of the hydrogen storage material supplies hydrogen to the hydrogen cell stack 2 on one hand, and enters the hydrogen cache bottle 3 on the other hand (for example, the specific gravity of the hydrogen entering the hydrogen cache bottle 3 in a certain embodiment is about 10-30%), so that self supply of the hydrogen is realized, and miniaturization and safe operation of hydrogen catalytic combustion gas can be realized.
The catalytic component 12 is a wire mesh which is arranged between the catalytic chamber inner wall 14 and the hydrogen storage bottle 11, and the surfaces of the catalytic chamber inner wall 14 and the wire mesh are coated with a catalyst plating layer. The wire mesh can function to increase the coated area of the catalyst. The catalyst coating can adopt Pt catalyst, the thickness of the coating is 0.1-0.5mm, and the catalyst has enough oxygen storage capacity and thermal stability, can activate oxygen and hydrogen at the same time, and has good adsorption effect on hydrogen at low temperature. The catalyst can not gather in the catalytic combustion process, and the catalytic activity and stability can not be weakened.
The hydrogen in the hydrogen buffer bottle 3 and the outside air enter the wire mesh area in the catalytic chamber 1, the wire mesh and the catalytic chamber 1 are internally coated with Pt catalyst, the hydrogen and the oxygen are catalytically combusted under the action of the catalyst, the heat generated by the catalytic combustion forms high temperature, the hydrogen storage material to be pyrolyzed is contained in the hydrogen storage bottle 11 and heated, the hydrogen storage material is pyrolyzed to release hydrogen, the released hydrogen is supplied to the hydrogen cell stack 2 on one hand, and enters the hydrogen buffer bottle 3 on the other hand, and the hydrogen entering the hydrogen buffer bottle 3 is repeatedly subjected to the above flow.
The reaction pressure of catalytic combustion in the catalytic chamber 1 is 0.1-0.5MPa, the temperature is 400-450 ℃, the hydrogen inlet concentration is 15-50%, and the balance is air.
The porosity of the wire mesh is 95% -98%, the through hole rate is more than or equal to 98%, the single hole diameter is 0.1-10mm, the volume density is 0.1-0.8g/cm 3, the wire mesh is made of stainless steel, and the shape of the wire mesh can be irregular.
The catalytic chamber 1 is round or pentagonal, the inner diameter of the catalytic chamber 1 is 300-400mm, the number of the hydrogen storage bottles 11 is 7-9, the inner diameter of the hydrogen storage bottles 11 is 78mm, the height is 150-250mm, and the thickness is 2-3mm;
The hydrogen storage bottle 11 is filled with hydrogen storage material to be pyrolyzed in solid state, in the shape of sheet or granule, the thickness of single sheet hydrogen storage material is 3-4mm, the diameter is 7-8mm, and the particle size of single granule hydrogen storage material is 300-500 μm. The solid hydrogen storage material may be various solid hydrogen storage materials including magnesium-based, tiMn-based, VTi-based, rare earth-based hydrogen storage materials, and the like.
The hydrogen source system further comprises an air buffer 5 and an air pressure pump 6, the air pressure pump 6 and the air buffer 5 are sequentially communicated with an air inlet pipe 41, and the air pressure pump 6 can be a miniature air pressure pump.
The hydrogen source system further comprises a gas mixer 7, wherein the gas inlet end of the gas mixer 7 is communicated with an air inlet pipe 41 and a hydrogen inlet pipe 42, and the gas outlet end of the gas mixer is communicated with the catalytic chamber 1.
A gas heat exchanger 8 is arranged between the catalytic chamber 1 and the gas mixer 7, the gas heat exchanger 8 is communicated with a cold pipe 44 and a heat pipe 45, the cold pipe 44 sends the mixed gas in the gas mixer 7 into the catalytic chamber 1 through the gas heat exchanger 8, the heat pipe 45 returns the gas generated by the reaction of the catalytic chamber 1 to the gas mixer 8, and an exhaust filter is arranged at the end part of the heat pipe 45 penetrating through the gas mixer 8.
The two sets of pipelines of the gas heat exchanger 8 respectively transmit cold and hot media, the pipeline media are mutually isolated, and only medium heat transfer is carried out.
The reaction filter 9 is arranged on the hydrogen outlet pipe 43, the pressure gauge 13 is also arranged in the catalytic chamber 1, and the flowmeter 421 is arranged on the hydrogen inlet pipe 42.
The pipeline group 4 can uniformly adopt a stainless steel air pipe with the diameter of 6mm, and the catalytic chamber 1, the gas mixer 7, the gas heat exchanger 8, the hydrogen cache bottle 3, the air cache bottle 5 and the filter reactor 9 are pressure-resistant containers and are isolated relative to the external atmosphere.
Be provided with a plurality of solenoid valves in the pipeline group 4, the solenoid valve uses the cutting ferrule to connect and is connected with pipeline group 4, and the latus rectum of solenoid valve can be selected to 4mm.
For example, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve are arranged on the hydrogen outlet pipe 43 and are respectively used for controlling the discharge of hydrogen generated by the reaction of the hydrogen storage bottle 11, controlling the hydrogen to enter the hydrogen pile 2 and controlling the outlet gas of the reaction filter 9 to flow back to the hydrogen cache bottle 3;
A fourth electromagnetic valve, which is arranged on the hydrogen inlet pipe 42 and is used for controlling hydrogen to enter the gas mixer 7;
a fifth electromagnetic valve provided on the air intake pipe 41 for controlling the air to enter the gas mixer 7;
A sixth electromagnetic valve, which is arranged on the cold pipe 44 between the gas heat exchanger 8 and the catalytic chamber 1, and is used for controlling the gas of the gas heat exchanger 8 to enter the catalytic chamber 1;
A seventh electromagnetic valve, disposed on the air inlet pipe 41, for controlling the air in and out of the air buffer bottle 5;
An eighth electromagnetic valve, which is arranged on the hydrogen inlet pipe 42 and is used for controlling the gas in and out of the hydrogen cache bottle 3;
The hydrogen source system further comprises a controller 10, and the controller 10 is in signal connection with the pressure gauge 13, the flow meter 421, the electromagnetic valve and the like for monitoring and controlling the gas.
The pressure of the air buffer 5 is less than or equal to 3MPa, and the pressure of the hydrogen buffer 3 is less than or equal to 5MPa.
A hydrogen source system based on hydrogen storage pyrolysis comprises the following specific working procedures:
1. Start preparation phase
A hydrogen storage bottle 11 is arranged in the catalytic chamber 1 and is connected with a pipeline of the hydrogen storage bottle 11;
filling hydrogen gas into the hydrogen cache bottle 3 from the charging port to a preset pressure, such as 3Mpa;
Starting the controller 10 to perform self-checking;
The controller 10 completes self-checking, starts the air pressure pump 6, opens the seventh electromagnetic valve, and fills air into the air buffer bottle 5 to a preset pressure, such as 5Mpa;
After the air buffer bottle 5 reaches the preset pressure, the seventh electromagnetic valve is closed, and the preparation of the hydrogen source system is completed.
2. Run phase
S1, opening a fifth electromagnetic valve, opening an air pressure pump 6, and starting compressed air to be introduced into a gas mixer 7;
S2 opens the sixth solenoid valve, compressed air passes through the gas mixer 7, the cold pipe 44, the wire mesh in the catalytic chamber 1, the heat pipe 45, the gas heat exchanger 8, and then is discharged to the atmosphere through the exhaust filter.
S3, starting a fourth electromagnetic valve and an eighth electromagnetic valve, driving by the pressure of the hydrogen buffer bottle 3, enabling hydrogen to enter the gas mixer 7, and controlling the flow of the hydrogen by the flowmeter 421.
S4, uniformly mixing hydrogen and air in the gas mixer 7, and enabling the mixed gas to enter the catalytic chamber 1 through a sixth valve;
S5, the Pt catalyst coated on the surface of the metal wire mesh reacts with the mixed gas of hydrogen and air, the hydrogen is consumed by the reaction, and a large amount of heat is generated by the reaction;
s6.1, a small amount of reaction heat is absorbed by the shell of the catalytic chamber 1 and the hydrogen storage bottle body, most of the heat is absorbed by the hydrogen storage material contained in the hydrogen storage bottle 11, the hydrogen storage material is pyrolyzed, and the rest of the heat passes through the heat pipe 45, and the reacted gas (water and air) exchanges heat with the compressed air continuously filled in the gas heat exchanger 8 and then is discharged into the atmosphere;
S6.2, generating hydrogen after the hydrogen storage material is pyrolyzed, opening a first electromagnetic valve after reaching a preset pressure, recharging the hydrogen into the hydrogen cache bottle 3, and simultaneously, as a hydrogen source in the step S4, closing an eighth electromagnetic valve after reaching the preset pressure in the hydrogen cache bottle 3.
S7, repeating the steps S4-S6.1, opening a second electromagnetic valve after the pressure of the pipeline group 4 reaches a preset value, and starting hydrogen supply to the hydrogen pile 2 to generate electricity while maintaining the catalytic reaction of S1-S6.1 by using hydrogen generated by pyrolysis.
3. Emergency treatment
If the reaction is required to be stopped, the third electromagnetic valve and the fourth electromagnetic valve are closed, and the catalytic chamber 1 loses the reaction raw material, the temperature is gradually reduced, and the hydrogen storage material stops pyrolysis. After the pressure of the pipeline group 4 reaches normal pressure, the second electromagnetic valve is closed, and the power supply to the hydrogen stack is stopped.
If the power is cut off, the rest of the electromagnetic valves are closed, the seventh electromagnetic valve is opened (the standby power supply of the controller 10 is driven), and the air buffer bottle 5 injects excessive air into the gas mixer 7, so that the hydrogen concentration of the catalytic chamber 1 is lower than the reaction requirement, and the pyrolysis reaction is stopped.
In addition, the hydrogen buffer bottle 3 and the air buffer bottle 5 are provided with manual valves, and can be closed without extra power when needed.
The foregoing description of the preferred embodiments of the present utility model has been presented for purposes of clarity and understanding, and is not intended to limit the utility model to the particular embodiments disclosed, but is intended to cover all modifications, alternatives, and improvements within the spirit and scope of the utility model as outlined by the appended claims.
Claims (10)
1. A hydrogen source system based on hydrogen storage pyrolysis, comprising: a catalytic chamber (1), a hydrogen cell stack (2), a hydrogen buffer bottle (3) and a pipeline group (4);
The pipeline group (4) comprises an air inlet pipe (41), a hydrogen inlet pipe (42) and a hydrogen outlet pipe (43), wherein the air inlet pipe (41) is used for conveying air into the catalytic chamber (1), the hydrogen inlet pipe (42) is communicated with the hydrogen cache bottle (3) and the catalytic chamber (1), hydrogen is conveyed into the catalytic chamber (1), and the hydrogen outlet pipe (43) is respectively communicated with the catalytic chamber (1) and the hydrogen stack (2), and the catalytic chamber (1) and the hydrogen cache bottle (3);
the catalytic chamber (1) comprises a hydrogen storage bottle (11) and a catalytic component (12) surrounding the outer wall (15) of the hydrogen storage bottle, and hydrogen storage materials to be pyrolyzed are contained in the hydrogen storage bottle (11).
2. Hydrogen source system based on hydrogen storage pyrolysis according to claim 1, characterized in that the catalytic component (12) is a wire mesh arranged between the catalytic inner wall (14) and the hydrogen storage bottle (11), the catalytic inner wall (14) and the wire mesh surface being coated with a catalyst coating.
3. The hydrogen source system based on hydrogen storage pyrolysis according to claim 2, wherein the porosity of the wire mesh is 95% -98%, the porosity is not less than 98%, the single pore diameter is 0.1-10mm, the volume density is 0.1-0.8g/cm 3, and the wire mesh is made of stainless steel.
4. Hydrogen source system based on hydrogen storage pyrolysis according to claim 2, characterized in that the catalytic chamber (1) is circular or pentagonal, the internal diameter of the catalytic chamber (1) is 300-400mm, the number of hydrogen storage bottles (11) is 7-9, the internal diameter of the hydrogen storage bottles (11) is 78mm, the height is 150-250mm, the thickness is 2-3mm;
The hydrogen storage bottle (11) is filled with hydrogen storage material to be pyrolyzed, the hydrogen storage material is solid, the shape is sheet or granular, the thickness of the single sheet hydrogen storage material is 3-4mm, the diameter is 7-8mm, and the particle size of the single granular hydrogen storage material is 300-500 mu m.
5. The hydrogen source system based on hydrogen storage pyrolysis according to claim 2, further comprising an air buffer (5) and an air pressure pump (6), wherein the air pressure pump (6) and the air buffer (5) are sequentially communicated with an air inlet pipe (41).
6. The hydrogen source system based on hydrogen storage pyrolysis according to claim 1, further comprising a gas mixer (7), wherein an air inlet end of the gas mixer (7) is communicated with an air inlet pipe (41) and a hydrogen inlet pipe (42), and an air outlet end of the gas mixer is communicated with the catalytic chamber (1).
7. The hydrogen source system based on hydrogen storage pyrolysis according to claim 6, wherein a gas heat exchanger (8) is arranged between the catalytic chamber (1) and the gas mixer (7), the gas heat exchanger (8) is communicated with a cold pipe (44) and a heat pipe (45), the cold pipe (44) sends the mixed gas in the gas mixer (7) into the catalytic chamber (1) through the gas heat exchanger (8), and the heat pipe (45) returns the gas generated by the reaction of the catalytic chamber (1) to the gas heat exchanger (8).
8. The hydrogen source system based on hydrogen storage pyrolysis according to claim 1, wherein a reaction filter (9) is arranged on a hydrogen outlet pipe (43), a pressure gauge (13) is further arranged in the catalytic chamber (1), and a flowmeter (421) is arranged on a hydrogen inlet pipe (42).
9. The hydrogen source system based on hydrogen storage pyrolysis according to claim 8, further comprising a controller (10), wherein the controller (10) is in signal connection with both the pressure gauge (13) and the flow meter (421) for monitoring and controlling the gas.
10. The hydrogen source system based on hydrogen storage pyrolysis according to claim 1, wherein the pressure of the air buffer (5) is less than or equal to 3MPa, and the pressure of the hydrogen buffer bottle (3) is less than or equal to 5MPa;
the reaction pressure in the catalytic chamber (1) is 0.1-0.5MPa, and the temperature is 400-450 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322430729.XU CN220856628U (en) | 2023-09-07 | 2023-09-07 | Hydrogen source system based on hydrogen storage pyrolysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322430729.XU CN220856628U (en) | 2023-09-07 | 2023-09-07 | Hydrogen source system based on hydrogen storage pyrolysis |
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| CN220856628U true CN220856628U (en) | 2024-04-26 |
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| Country | Link |
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