CN109163214B - Hydrogenation station - Google Patents
Hydrogenation station Download PDFInfo
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- CN109163214B CN109163214B CN201810930018.XA CN201810930018A CN109163214B CN 109163214 B CN109163214 B CN 109163214B CN 201810930018 A CN201810930018 A CN 201810930018A CN 109163214 B CN109163214 B CN 109163214B
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 154
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 212
- 239000001257 hydrogen Substances 0.000 claims abstract description 212
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 204
- 238000004519 manufacturing process Methods 0.000 claims abstract description 70
- 238000003860 storage Methods 0.000 claims abstract description 57
- 238000010248 power generation Methods 0.000 claims description 37
- 238000009826 distribution Methods 0.000 claims description 30
- 239000007789 gas Substances 0.000 claims description 23
- 238000004146 energy storage Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000005868 electrolysis reaction Methods 0.000 claims description 18
- 238000000746 purification Methods 0.000 claims description 15
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- 239000002028 Biomass Substances 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0335—Check-valves or non-return valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0157—Compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0184—Fuel cells
-
- 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
- Y02E60/32—Hydrogen storage
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a hydrogenation station, which comprises: the hydrogen production system comprises an electric power supply system and a hydrogen production system, wherein the electric power supply system is connected with the hydrogen production system, and the hydrogen production system is provided with a first-stage hydrogen storage tank for storing hydrogen; the hydrogenation system comprises a hydrogenation machine and first to third-stage hydrogenation branches, wherein the air inlet ends of the first to third-stage hydrogenation branches are connected with the air outlet of the first-stage hydrogen storage tank, the air outlet ends are connected with the air inlet of the hydrogenation machine, and the first to third-stage hydrogenation branches are selectively communicated with the air inlet of the hydrogenation machine and meet the following conditions: p1 is less than P2 and less than P3, wherein P1, P2 and P3 are the air pressures at the air outlet ends of the first-stage hydrogenation branch circuit to the third-stage hydrogenation branch circuit respectively. According to the hydrogenation station, the multiple hydrogenation branches are arranged, so that multistage filling can be realized, energy consumption can be reduced, filling efficiency is improved, more efficient, rapid and low-cost hydrogen filling is realized, and the hydrogen sources of the multiple hydrogenation branches are connected to the same hydrogen storage tank, so that the whole system is simple in structure.
Description
Technical Field
The invention belongs to the technical field of hydrogen energy, and particularly relates to a hydrogen adding station.
Background
Renewable energy sources such as solar energy, wind energy and tidal energy are environment-friendly and inexhaustible, and the renewable energy sources are the main body of future energy sources, but the power output of a power generation system has the characteristics of intermittence, randomness and the like, cannot synchronously apply electric loads, and cannot meet the electricity demand of people. The renewable energy source is converted into hydrogen energy through the water electrolysis hydrogen production technology, on one hand, the peak regulation energy storage of the renewable energy source can be realized by combining the fuel cell power generation technology, and on the other hand, the multi-way absorption of the hydrogen energy can be realized through direct sales, hydrogen fuel cell transportation, hydrogen blending natural gas and other modes.
Hydrogen stations have been rapidly developed worldwide as an important infrastructure for hydrogen fuel cell automobiles and other hydrogen energy utilization devices to obtain a source of hydrogen. In order to avoid the great temperature rise of the hydrogen storage bottle caused by high pressure difference during hydrogen filling, a multi-time step-by-step filling technology is required. In the related art, three low-medium-high pressure hydrogen storage tanks with different pressures are arranged, and the step-by-step filling of hydrogen is realized by sequentially using the low-medium-high pressure hydrogen storage tanks, and meanwhile, in order to maintain the air pressure in the low-medium-high pressure hydrogen storage tanks, a compression system with a complex structure needs to be arranged, for example, the respective compression systems are respectively designed for the low-medium-high pressure hydrogen storage tanks, so that the structure of the whole system is complex.
On the other hand, when the renewable energy source is used for producing hydrogen by water electrolysis, the instability of the renewable energy source power generation and the poor regulation and control property cause unstable hydrogen production, the damage to equipment is large, and the renewable energy source power generation is difficult to completely consume by a hydrogenation station in the peak period, so that the electric power is wasted.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the hydrogenation station which has high filling efficiency and simple structure.
According to an embodiment of the present invention, a docking station includes: the hydrogen production system comprises an electric power supply system and a hydrogen production system, wherein the electric power supply system is connected with the hydrogen production system and is used for supplying power to the hydrogen production system, and the hydrogen production system is provided with a first-stage hydrogen storage tank for storing hydrogen; the hydrogenation system, the hydrogenation system includes hydrogenation machine, first to third level hydrogenation branch road, the air inlet end of first to third level hydrogenation branch road all with the gas outlet of first level hydrogen storage tank links to each other, the air outlet end of first to third level hydrogenation branch road all with the air inlet of hydrogenation machine links to each other, first to third level hydrogenation branch road all can selectively with the air inlet intercommunication of hydrogenation machine, first level hydrogenation branch road is equipped with pressure reduction equipment, third level hydrogenation branch road is equipped with supercharging equipment, and satisfies: p1 is less than P2 and less than P3, wherein P1 is the air pressure at the air outlet end of the first stage hydrogenation branch, P2 is the air pressure at the air outlet end of the second stage hydrogenation branch, and P3 is the air pressure at the air outlet end of the third stage hydrogenation branch.
According to the hydrogenation station disclosed by the embodiment of the invention, the multiple hydrogenation branches are arranged, so that multistage filling can be realized, the energy consumption can be reduced, the filling efficiency is improved, more efficient, rapid and low-cost hydrogen filling is realized, and the hydrogen sources of the multiple hydrogenation branches are connected to the same hydrogen storage tank, so that the whole system is simple in structure.
According to the hydrogenation station disclosed by the embodiment of the invention, the first-stage hydrogenation branch comprises a pressure reducing valve and a first branch stop valve which are connected in series, the second-stage hydrogenation branch comprises a second branch stop valve, and the third-stage hydrogenation branch comprises a third branch first stop valve, a second-stage compressor, a second-stage hydrogen storage tank and a third branch second stop valve which are connected in series.
According to the hydrogenation station of one embodiment of the invention, the hydrogenation station is provided with a first hydrogenation working mode, in the first hydrogenation working mode, the hydrogenation station is arranged that the transportation branch stop valve is kept closed, hydrogen is filled through the hydrogenation machine, the first branch stop valve is opened, the second branch stop valve is closed, the third branch second stop valve is closed, the first branch stop valve is closed, the second branch stop valve is opened, the third branch second stop valve is closed when pressure balance is reached, the first branch stop valve is closed, the second branch stop valve is closed, and the third branch second stop valve is opened to finish filling when pressure balance is reached.
According to the hydrogenation station, a first end of the pressure reducing valve is connected with an air outlet of the first-stage hydrogen storage tank, and the first branch stop valve is connected between a second end of the pressure reducing valve and an air inlet of the hydrogenation machine; the hydrogen station further comprises: the transportation branch is connected with the first-stage hydrogenation branch and is connected between the second end of the pressure reducing valve and the first branch stop valve, and the transportation branch is provided with a transportation branch stop valve and is used for filling hydrogen into hydrogen transportation equipment.
According to one embodiment of the invention, the hydrotreater has a second hydrotreater mode in which the hydrotreater is configured such that the first bypass cut-off valve, the second bypass cut-off valve, and the third bypass second cut-off valve are all kept closed, and the transport bypass cut-off valve is opened for filling through the transport bypass.
According to a hydrogen station of one embodiment of the present invention, the hydrogen production system includes: the hydrogen production device comprises water electrolysis hydrogen production equipment, hydrogen purification equipment, a first-stage compressor, a hydrogen production stop valve and a first-stage hydrogen storage tank, wherein an electric power supply system is used for supplying power to the water electrolysis hydrogen production equipment, the hydrogen purification equipment and the first-stage compressor, an air outlet of the water electrolysis hydrogen production equipment is connected with an air inlet of the hydrogen purification equipment, an air outlet of the hydrogen purification equipment is connected with the air inlet of the first-stage compressor, and an air outlet of the first-stage compressor is connected with the air inlet of the first-stage hydrogen storage tank through the hydrogen production stop valve.
According to the hydrogenation station, according to one embodiment of the invention, the working pressure of the first-stage compressor is A, the working pressure of the first-stage hydrogen storage tank is B, the working pressure of the second-stage compressor is C, and the working pressure of the second-stage hydrogen storage tank is D, so that the following conditions are satisfied: b is more than or equal to 35MPa and less than or equal to A is more than or equal to 60MPa, D is more than or equal to 70MPa and less than or equal to C is more than or equal to 90MPa, P1 is more than or equal to 25MPa and less than or equal to B is more than or equal to 90MPa.
According to the hydrogenation station of one embodiment of the invention, the first-stage hydrogen storage tank comprises a first air outlet, a second air outlet and a third air outlet, the air inlet end of the first-stage hydrogenation branch is connected with the first air outlet, the air inlet end of the second-stage hydrogenation branch is connected with the second air outlet, and the air inlet end of the third-stage hydrogenation branch is connected with the third air outlet.
According to an embodiment of the present invention, the power supply system includes: a power generation device; the power generation device is electrically connected with the input end of the rectification power distribution equipment, and the output end of the rectification power distribution equipment is electrically connected with the hydrogen production system and is used for supplying power to the hydrogen production system; and the rectifying power distribution equipment is electrically connected with the energy storage power station.
According to one embodiment of the present invention, the rectified power distribution device has an output port for supplying power to a power grid.
According to one embodiment of the present invention, the power supply system includes a first power operation mode and a second power operation mode; in the first power supply working mode, the power generation device supplies power to the hydrogen production system, the energy storage power station and the power grid through the rectifying and power distribution equipment; in the second power supply working mode, the energy storage power station supplies power to the hydrogen production system and the power grid through the rectifying and power distribution equipment.
According to the hydrogen station of one embodiment of the invention, the power generation device comprises at least one of wind power generation equipment, photovoltaic power generation equipment, hydroelectric power generation equipment and biomass power generation equipment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a docking station in a first powered mode of operation according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the architecture of the docking station in a second power mode of operation in accordance with an embodiment of the present invention.
Reference numerals:
the hydrogen production system comprises a power generation device 1, a rectifying and power distribution device 2, an energy storage power station 3, a water electrolysis hydrogen production device 4, a hydrogen purification device 5, a first-stage compressor 6, a hydrogen production stop valve 7, a first-stage hydrogen storage tank 8, a pressure reducing valve 9, a transportation branch stop valve 10, a hydrogen transportation device 11, a third-branch first stop valve 12, a second-stage compressor 13, a second-stage hydrogen storage tank 14, a second-branch stop valve 15, a third-branch second stop valve 16, a first-branch stop valve 17, a hydrogenation machine 18, a hydrogen energy vehicle 19 and a power grid 20.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The hydrogen station disclosed by the invention utilizes renewable energy sources and the energy storage power station 3 to generate electricity in a coupling way to produce hydrogen, and realizes high-pressure hydrogenation (such as 70 MPa) according to the produced hydrogen, so that on one hand, the problem of dynamic power following of the renewable energy sources can be overcome while the renewable energy sources are fully utilized, and unstable hydrogen production and damage to a water electrolysis hydrogen production device are avoided; on the other hand, the high-efficiency utilization of renewable energy power generation can be realized; in another aspect, the method conforms to the development trend of high filling pressure of hydrogen energy infrastructure, and can complete hydrogen filling more efficiently, rapidly and with low cost.
A hydrogen station according to an embodiment of the present invention is described below with reference to fig. 1-2.
As shown in fig. 1-2, a docking station according to one embodiment of the present invention includes: an electric power supply system, a hydrogen production system and a hydrogenation system.
First, a power supply system of an embodiment of the present invention is described.
The power supply system is used for providing power, and the power supply system can generate electricity through renewable energy, and the power supply system includes: a power generation device 1, a rectifying and power distribution device 2 and an energy storage power station 3.
The power plant 1 may generate power from renewable energy sources, and in some embodiments the power plant 1 comprises at least one of a wind power plant, a photovoltaic power plant, a hydro power plant, a biomass power plant.
The rectifying and power distribution equipment 2 is used for rectifying and distributing electric energy generated by the power generation device 1, the rectifying and power distribution equipment 2 comprises a rectifier and a power distributor, the power generation device 1 is electrically connected with the input end of the rectifying and power distribution equipment 2, the output end of the rectifying and power distribution equipment 2 is electrically connected with the hydrogen production system and is used for supplying power to the hydrogen production system, the rectifying and power distribution equipment 2 is electrically connected with the energy storage power station 3, and the rectifying and power distribution equipment 2 is provided with an output port used for supplying power to the power grid 20.
The energy storage power station 3 may comprise various forms of batteries, such as lead acid batteries, lead carbon batteries, lithium batteries, power capacitor batteries, etc.
The power supply system may have a first power mode of operation and a second power mode of operation.
As shown in fig. 1, when the amount of generated electricity of the power generation device 1 is sufficient, the power supply system is switched into a first power supply operation mode in which the power generation device 1 supplies power to the hydrogen production system, the energy storage power station 3, and the power grid 20 through the rectifying and power distribution equipment 2, wherein the rectifying and power distribution equipment 2 supplies direct current to the energy storage power station 3, the rectifying and power distribution equipment 2 supplies direct current to the water electrolysis hydrogen production equipment 4 of the hydrogen production system, and the rectifying and power distribution equipment 2 supplies alternating current to the power grid 20.
Thus, when the power generation amount of the power generation device 1 is sufficient, the electric energy can be used for hydrogen production and power storage, and the redundant electric energy can be connected in parallel, so that the utilization rate of the electric energy is high.
As shown in fig. 2, when the power generation amount of the power generation device 1 is insufficient, the power supply system is switched into the second power supply operation mode in which the energy storage power station 3 supplies power to the hydrogen production system through the rectifying and power distribution apparatus 2. Due to insufficient renewable energy sources such as wind power, sunlight and the like, the electricity generation of the power generation device 1 is low, even the power supply is interrupted, the energy storage power station 3 supplies electric energy, and the rectifying and power distribution equipment 2 supplies power to the hydrogen production system, such as the water electrolysis hydrogen production equipment 4 supplies direct current. Of course, when the amount of electricity stored by the energy storage power station 3 is sufficient and the grid 20 has a demand, the energy storage power station 3 may also supply ac power to the grid 20 through the rectifying and power distribution device 2.
According to the hydrogenation station provided by the embodiment of the invention, through the arrangement of the electric power supply system with the structural form, on one hand, the power supply deficiency caused by weather and other reasons can be overcome, the problem of dynamic power following of renewable energy power generation is solved, and unstable hydrogen production and damage to a water electrolysis hydrogen production device are avoided; on the other hand, peak clipping and valley filling can be realized, and energy sources are fully utilized and saved.
The hydrogen production system of the embodiment of the present invention is described below.
As shown in fig. 1 and 2, the hydrogen production system includes: the hydrogen production device comprises a water electrolysis hydrogen production device 4, a hydrogen purification device 5, a first-stage compressor 6, a hydrogen production stop valve 7 and a first-stage hydrogen storage tank 8. The power supply system is used for supplying power to the water electrolysis hydrogen production equipment 4, the hydrogen purification equipment 5 and the first-stage compressor 6. The gas outlet of the water electrolysis hydrogen production equipment 4 is connected with the gas inlet of the hydrogen purification equipment 5, the gas outlet of the hydrogen purification equipment 5 is connected with the gas inlet of the first-stage compressor 6, the gas outlet of the first-stage compressor 6 is connected with the gas inlet of the first-stage hydrogen storage tank 8 through the hydrogen production stop valve 7, and the first-stage hydrogen storage tank 8 is used for storing hydrogen.
Hydrogen produced by the water electrolysis hydrogen production equipment 4 enters the first-stage compressor 6 after being purified by the hydrogen purification equipment 5, and the gas outlet of the first-stage compressor 6 is connected with the first-stage hydrogen storage tank 8 through the hydrogen production stop valve 7.
The first-stage compressor 6 may be a diaphragm compressor, which has no contamination and is suitable for compressing high-purity gas, and the diaphragm compressor has a high compression ratio, can provide a wide pressure range, and can be used for preparing high-pressure gas.
The hydrogen production system of the embodiment of the present invention is described below.
As shown in fig. 1 and 2, the hydrogenation system includes a hydrogenation machine 18, a first-stage hydrogenation branch, a second-stage hydrogenation branch, and a third-stage hydrogenation branch, where the air inlet end of the first-stage hydrogenation branch, the air inlet end of the second-stage hydrogenation branch, and the air inlet end of the third-stage hydrogenation branch are all connected to the air outlet of the first-stage hydrogen storage tank 8. In some embodiments, the first stage hydrogen storage tank 8 includes a first gas outlet, a second gas outlet, and a third gas outlet, the gas inlet end of the first stage hydrogenation branch is connected to the first gas outlet, the gas inlet end of the second stage hydrogenation branch is connected to the second gas outlet, and the gas inlet end of the third stage hydrogenation branch is connected to the third gas outlet.
The air outlet end of the first-stage hydrogenation branch, the air outlet end of the second-stage hydrogenation branch and the air outlet end of the third-stage hydrogenation branch are all connected with the air inlet of the hydrogenation machine 18, and the first-stage hydrogenation branch, the second-stage hydrogenation branch and the third-stage hydrogenation branch can be selectively communicated with the air inlet of the hydrogenation machine 18, or the first-stage hydrogenation branch can be selectively conducted, the second-stage hydrogenation branch can be selectively conducted and the second-stage hydrogenation branch can be selectively conducted.
The first-stage hydrogenation branch is provided with pressure reducing equipment, the third-stage hydrogenation branch is provided with pressurizing equipment, and the requirements are met: p1 is less than P2 and less than P3, wherein P1 is the air pressure at the air outlet end of the first stage hydrogenation branch, P2 is the air pressure at the air outlet end of the second stage hydrogenation branch, and P3 is the air pressure at the air outlet end of the third stage hydrogenation branch.
When hydrogen is filled, for example, when the hydrogen energy vehicle 19 (including but not limited to a hydrogen fuel cell vehicle) is hydrogenated, the first-stage hydrogenation branch is used for first-stage filling, and due to the depressurization function of the depressurization device on the first-stage hydrogenation branch, relatively low-pressure hydrogen can be provided for the vehicle-mounted hydrogen storage bottle, so that the large-amplitude temperature rise of the vehicle-mounted hydrogen storage bottle caused by high pressure difference is avoided. And after the pressure reaches equilibrium, disconnecting the first-stage hydrogenation branch, and performing secondary filling by using the second-stage hydrogenation branch. After the pressure reaches equilibrium again, the second-stage hydrogenation branch is disconnected, the third-stage hydrogenation branch is used for three-stage filling, and the hydrogenation pressure of the vehicle-mounted hydrogen storage bottle can reach a larger value, such as 70MPa, due to the supercharging effect of the supercharging equipment on the third-stage hydrogenation branch.
Of course, the hydrogenation branch is not limited to the first to third stage hydrogenation branches, and more hydrogenation branches may be provided to realize more stages of filling.
According to the hydrogenation station disclosed by the embodiment of the invention, the multiple hydrogenation branches are arranged, so that multistage filling can be realized, the energy consumption can be reduced, the filling efficiency is improved, more efficient, rapid and low-cost hydrogen filling is realized, and the hydrogen sources of the multiple hydrogenation branches are connected to the same hydrogen storage tank, so that the whole system is simple in structure.
In some embodiments, as shown in fig. 1 and 2, the first stage hydrogenation branch includes a pressure reducing valve 9 and a first branch shut-off valve 17, the pressure reducing valve 9 and the first branch shut-off valve 17 being connected in series, the pressure reducing apparatus of the above embodiments including the pressure reducing valve 9. The depressurization can be realized through the simple pressure reducing valve 9, and the first-stage hydrogenation branch can be switched on or off by arranging the first branch stop valve 17.
The second-stage hydrogenation branch circuit comprises a second branch circuit stop valve 15, and the second branch circuit stop valve 15 can realize the connection or disconnection of the second-stage hydrogenation branch circuit. The pressure at the outlet end of the second stage hydrogenation branch is substantially equal to the pressure of the first stage hydrogen storage tank 8.
The third-stage hydrogenation branch circuit comprises a third-branch first stop valve 12, a second-stage compressor 13, a second-stage hydrogen storage tank 14 and a third-branch second stop valve 16, wherein the third-branch first stop valve 12, the second-stage compressor 13, the second-stage hydrogen storage tank 14 and the third-branch second stop valve 16 can be connected in series, the third-branch first stop valve 12, the second-stage compressor 13, the second-stage hydrogen storage tank 14 and the third-branch second stop valve 16 can be connected in series in sequence, the third-branch first stop valve 12 is connected between a third air outlet of the first-stage hydrogen storage tank 8 and an air inlet of the second-stage compressor 13, and the third-branch second stop valve 16 is connected between an air outlet of the second-stage hydrogen storage tank 14 and the hydrogenation machine 18.
The second stage compressor 13 may be a diaphragm compressor, which has no contamination and is suitable for compressing high purity gas, and the diaphragm compressor has a high compression ratio, can provide a wide pressure range, and can be used for preparing high pressure gas. The power supply system is used to power the second stage compressor 13.
The state of the third-branch first stop valve 12 may be controlled according to the pressure of the second-stage hydrogen tank 14, when the pressure of the second-stage hydrogen tank 14 is higher than a first preset value, the third-branch first stop valve 12 is closed and the second-stage compressor 13 is stopped, and when the pressure of the second-stage hydrogen tank 14 is lower than a second preset value, the third-branch first stop valve 12 is opened and the second-stage compressor 13 is started.
The second stage hydrogen storage tank 14 is used to store hydrogen gas that is subjected to a second stage pressurization. The working pressure of the first-stage compressor 6 is A, the working pressure of the first-stage hydrogen storage tank 8 is B, the working pressure of the second-stage compressor 13 is C, and the working pressure of the second-stage hydrogen storage tank 14 is D, so that the requirements are satisfied: b is more than or equal to 35MPa and less than or equal to A is more than or equal to 60MPa, D is more than or equal to 70MPa and less than or equal to C is more than or equal to 90MPa, P1 is more than or equal to 25MPa and less than or equal to B is more than or equal to 90MPa. For example, p1=25 MPa, b=45 MPa, d=90 MPa.
In some embodiments, as shown in fig. 1 and 2, a first end of the pressure reducing valve 9 is connected to an air outlet of the first stage hydrogen storage tank 8, and a first bypass shutoff valve 17 is connected between a second end of the pressure reducing valve 9 and an air inlet of the hydrogenation machine 18; the hydrogen station further comprises: the transportation branch road, transportation branch road link to each other with first level hydrogenation branch road, and transportation branch road connects between the second end of relief pressure valve 9 and first branch road stop valve 17, and transportation branch road is equipped with transportation branch road stop valve 10, and transportation branch road is used for filling hydrogen to hydrogen transportation equipment 11, and hydrogen transportation equipment 11 can include hydrogen tank car, hydrogen bottle etc.. The connection relation can enable the first-stage hydrogenation branch and the transportation branch not to be affected by each other, and the transportation branch can utilize the depressurization equipment of the first-stage hydrogenation branch, so that the structure of the whole hydrogenation station is simpler.
The hydrogenation station has a first hydrogenation working mode, in the first hydrogenation working mode, the hydrogenation station is set to keep the transportation branch stop valve 10 closed, hydrogen is filled through the hydrogenation machine 18, first-stage hydrogenation branch is conducted, second-stage hydrogenation branch is disconnected, first-stage hydrogenation branch is disconnected, namely, first branch stop valve 17 is opened, second branch stop valve 15 is closed, third branch second stop valve 16 is closed, switching to first-stage hydrogenation branch is disconnected when pressure balance is achieved, second-stage hydrogenation branch is conducted, first-stage hydrogenation branch is disconnected, namely, first branch stop valve 17 is closed, second branch stop valve 15 is opened, third branch second stop valve 16 is closed, switching to first-stage hydrogenation branch is disconnected when pressure balance is achieved, first-stage hydrogenation branch is conducted, namely, first branch stop valve 17 is closed, second branch stop valve 15 is closed, third branch second stop valve 16 is opened, and filling is completed.
The hydrotreater has a second hydrotreater mode in which the hydrotreater is set to a first branch shut-off valve 17, a second branch shut-off valve 15, a third branch second shut-off valve 16, all kept closed, and the transport branch shut-off valve 10 opened for filling through the transport branch.
In a particular embodiment, the power supply system may have a first power mode of operation and a second power mode of operation.
As shown in fig. 1, when the amount of generated electricity of the power generation device 1 is sufficient, the power supply system is switched into a first power supply operation mode, in which the photoelectric, wind power and water power are used as the electric energy generated by the renewable energy power generation device 1, direct current is respectively provided to the energy storage power station 3 and the hydrogen production system through the rectifying and power distribution equipment 2, and the rest of the alternating current is switched into the power grid 20.
As shown in fig. 2, when the power generation amount of the power generation device 1 is insufficient, the power supply system is switched into the second power supply operation mode in which the energy storage power station 3 supplies direct current to the hydrogen production system through the rectifying and power distribution equipment 2, and the energy storage power station 3 can also supply alternating current to the power grid 20 through the rectifying and power distribution equipment 2.
When the hydrogenation station is operated, after impurities are removed by the hydrogen purification equipment 5 prepared by the water electrolysis hydrogen production equipment 4, the hydrogen enters the first-stage compressor 6 with the working pressure of 45MPa, the air inlet pressure of the first-stage compressor 6 is smaller than 4MPa, and the air outlet pressure of the first-stage compressor 6 is 45MPa. The air outlet of the first-stage compressor 6 is connected with a first-stage hydrogen storage tank 8 with the working pressure of 45MPa through a hydrogen production stop valve 7.
Three outlets are arranged on the first-stage hydrogen storage tank 8, and the first outlet directly fills hydrogen into hydrogen transportation equipment 11 such as a hydrogen tank car and a hydrogen bottle through a pressure reducing valve 9 and a transportation branch stop valve 10 until the filling pressure reaches 20MPa; the second air outlet is connected with a hydrogenation machine 18 through a second branch stop valve 15; the hydrogen flowing out of the third gas outlet is filled into a second-stage hydrogen storage tank 14 with the working pressure of 90MPa through a third branch first stop valve 12 and a second-stage compressor 13 with the working pressure of 90MPa.
When the hydrogen generator 18 is used for filling the hydrogen energy vehicle 19 with hydrogen, the second branch stop valve 15 and the third branch second stop valve 16 are closed, the first branch stop valve 17 is opened, and the hydrogen flowing through the pressure reducing valve 9 is used for primary filling, so that the large temperature rise of the vehicle-mounted hydrogen storage bottle caused by high pressure difference is avoided. After the pressure reaches equilibrium, the first branch stop valve 17 is closed, the second branch stop valve 15 is opened, and the hydrogen in the hydrogen storage tank with the working pressure of 45MPa is used for secondary filling. After the pressure reaches balance again, the second branch stop valve 15 is closed, the third branch second stop valve 16 is opened, the hydrogen storage tank with the working pressure of 90MPa is started, and filling is completed after the working pressure of the vehicle-mounted hydrogen storage bottle reaches 70MPa.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. A hydrogen station, comprising:
the hydrogen production system comprises an electric power supply system and a hydrogen production system, wherein the electric power supply system is connected with the hydrogen production system and is used for supplying power to the hydrogen production system, and the hydrogen production system is provided with a first-stage hydrogen storage tank for storing hydrogen;
the hydrogenation system, the hydrogenation system includes hydrogenation machine, first to third level hydrogenation branch road, the air inlet end of first to third level hydrogenation branch road all with the gas outlet of first level hydrogen storage tank links to each other, the air outlet end of first to third level hydrogenation branch road all with the air inlet of hydrogenation machine links to each other, first to third level hydrogenation branch road all can selectively with the air inlet intercommunication of hydrogenation machine, first level hydrogenation branch road is equipped with pressure reduction equipment, third level hydrogenation branch road is equipped with supercharging equipment, and satisfies: p1 is less than P2 and less than P3, wherein P1 is the air pressure at the air outlet end of the first-stage hydrogenation branch, P2 is the air pressure at the air outlet end of the second-stage hydrogenation branch, and P3 is the air pressure at the air outlet end of the third-stage hydrogenation branch;
the first-stage hydrogenation branch comprises a pressure reducing valve and a first branch stop valve which are connected in series, the second-stage hydrogenation branch comprises a second branch stop valve, and the third-stage hydrogenation branch comprises a third branch first stop valve, a second-stage compressor, a second-stage hydrogen storage tank and a third branch second stop valve which are connected in series;
the first end of the pressure reducing valve is connected with the air outlet of the first-stage hydrogen storage tank, and the first branch stop valve is connected between the second end of the pressure reducing valve and the air inlet of the hydrogenation machine;
the hydrogen station further comprises: the transportation branch is connected with the first-stage hydrogenation branch and is connected between the second end of the pressure reducing valve and the first branch stop valve, and is provided with a transportation branch stop valve for filling hydrogen into hydrogen transportation equipment;
the hydrogenation station is provided with a first hydrogenation working mode, in the first hydrogenation working mode, the transportation branch stop valve is kept closed, hydrogen is filled into the hydrogenation machine, the first branch stop valve is opened, the second branch stop valve is closed, the third branch second stop valve is closed, the first branch stop valve is closed, the second branch stop valve is opened, the third branch second stop valve is closed when the pressure is balanced, the first branch stop valve is closed, the second branch stop valve is closed, and the third branch second stop valve is opened to finish filling when the pressure is balanced;
the hydrogenation station is provided with a second hydrogenation working mode, in the second hydrogenation working mode, the hydrogenation station is arranged to be kept closed by the first branch stop valve, the second branch stop valve and the third branch second stop valve, and the transportation branch stop valve is opened for filling through the transportation branch;
the hydrogen production system comprises: the hydrogen production device comprises water electrolysis hydrogen production equipment, hydrogen purification equipment, a first-stage compressor, a hydrogen production stop valve and a first-stage hydrogen storage tank, wherein the power supply system is used for supplying power to the water electrolysis hydrogen production equipment, the hydrogen purification equipment and the first-stage compressor, an air outlet of the water electrolysis hydrogen production equipment is connected with an air inlet of the hydrogen purification equipment, an air outlet of the hydrogen purification equipment is connected with the air inlet of the first-stage compressor, and an air outlet of the first-stage compressor is connected with the air inlet of the first-stage hydrogen storage tank through the hydrogen production stop valve;
the working pressure of the first-stage compressor is A, the working pressure of the first-stage hydrogen storage tank is B, the working pressure of the second-stage compressor is C, the working pressure of the second-stage hydrogen storage tank is D, and the requirements are met: b is more than or equal to 35MPa and less than or equal to A is more than or equal to 60MPa, D is more than or equal to 70MPa and less than or equal to C is more than or equal to 90MPa, P1 is more than or equal to 25MPa and less than or equal to B is more than or equal to 90MPa;
the first-stage hydrogen storage tank comprises a first air outlet, a second air outlet and a third air outlet, the air inlet end of the first-stage hydrogenation branch is connected with the first air outlet, the air inlet end of the second-stage hydrogenation branch is connected with the second air outlet, and the air inlet end of the third-stage hydrogenation branch is connected with the third air outlet.
2. The hydrogen station of claim 1, wherein said power supply system comprises:
a power generation device;
the power generation device is electrically connected with the input end of the rectification power distribution equipment, and the output end of the rectification power distribution equipment is electrically connected with the hydrogen production system and is used for supplying power to the hydrogen production system;
and the rectifying power distribution equipment is electrically connected with the energy storage power station.
3. The hydro-station of claim 2 wherein the rectifying and power distribution device has an output port for supplying power to a power grid.
4. The hydrogen station of claim 3, wherein said power supply system includes a first power mode of operation and a second power mode of operation;
in the first power supply working mode, the power generation device supplies power to the hydrogen production system, the energy storage power station and the power grid through the rectifying and power distribution equipment;
in the second power supply working mode, the energy storage power station supplies power to the hydrogen production system and the power grid through the rectifying and power distribution equipment.
5. The hydrogen plant of claim 2, wherein the power generation device comprises at least one of a wind power generation plant, a photovoltaic power generation plant, a hydro power generation plant, a biomass power generation plant.
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| CN110425416B (en) * | 2019-08-15 | 2023-08-15 | 浙江浙能技术研究院有限公司 | Small-scale low-energy-consumption ladder hydrogen storage system and method |
| CN112539340B (en) * | 2019-09-20 | 2022-07-29 | 中国石油化工股份有限公司 | Water electrolysis hydrogen supply hydrogenation station equipment model selection method |
| CN110566805B (en) * | 2019-09-30 | 2024-04-16 | 长江勘测规划设计研究有限责任公司 | Hydropower station pressurized hydrogen storage and decompression hydrogen transmission power generation device |
| CN111486344B (en) * | 2020-04-02 | 2021-12-17 | 江苏国富氢能技术装备股份有限公司 | Container skid-mounted compression hydrogenation device |
| CN112376071A (en) * | 2020-11-20 | 2021-02-19 | 四川金星清洁能源装备股份有限公司 | Water electrolysis hydrogen production hydrogenation integration system |
| CN113085622A (en) * | 2021-03-15 | 2021-07-09 | 河南恒聚新能源设备有限公司 | Wind, light, electricity, hydrogen storage integrated charging and hydrogen charging system for electric automobile on highway |
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