CN113979408A - Clean hydrogen production and energy supply system - Google Patents
Clean hydrogen production and energy supply system Download PDFInfo
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- CN113979408A CN113979408A CN202111499828.2A CN202111499828A CN113979408A CN 113979408 A CN113979408 A CN 113979408A CN 202111499828 A CN202111499828 A CN 202111499828A CN 113979408 A CN113979408 A CN 113979408A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/047—Decomposition of ammonia
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/065—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents from a hydride
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention provides a clean hydrogen production and energy supply system, wherein the output end of a photo-thermal system is connected with the input end of a heat storage system; the output end of the heat storage system is connected with the input end of the thermochemical hydrogen production system; outputting hydrogen from a gas outlet of the thermochemical hydrogen production system; therefore, hydrogen can be continuously driven for 24 hours to produce by combining the photo-thermal system and the heat storage system, and the produced hydrogen can be supplied to hydrogen equipment for use, so that the hydrogen production effect is obviously improved; meanwhile, the system can also comprise a new energy power generation system, a water electrolysis hydrogen production system, a steam turbine, a fuel cell, a hydrogen storage tank, a power supply system, a hydrogen adding station and the like, so that hydrogen can be produced comprehensively through multiple ways such as photovoltaic, wind power, heat energy and the like, the hydrogen can be produced continuously, and the yield can be improved; the new energy system is combined with the heat storage system and the hydrogen storage system, so that the peak regulation and absorption effects of electric power can be realized, and the stable supply of electric energy and hydrogen energy can be realized; in addition, the generated electric energy and hydrogen energy are both derived from solar energy and wind energy, and the device is clean, environment-friendly and high in economic benefit.
Description
Technical Field
The invention belongs to the technical field of hydrogen production, and particularly relates to a clean hydrogen production and energy supply system.
Background
The new energy is clean, pollution-free, wide in distribution and low in cost, and is an ideal source of a future energy supply system; therefore, the construction of new power systems mainly using new energy is accelerated. The shift from traditional fossil energy to new energy is a global trend and is an inevitable choice for achieving the goal of "double carbon". The current mainstream hydrogen production technology is mainly based on new energy sources such as wind power and photovoltaic to generate electricity to drive water electrolysis to produce hydrogen, but because wind energy, solar energy and the like are greatly influenced by weather and climate factors, the output of the wind energy and the solar energy has discontinuity, and continuous hydrogen production cannot be realized.
Disclosure of Invention
In view of this, the present invention provides a clean hydrogen production and energy supply system, which can continuously drive hydrogen production for 24 hours, and the produced hydrogen can be supplied to hydrogen-using equipment, so as to significantly improve the hydrogen production effect.
The application discloses clean hydrogen manufacturing and energy supply system includes: a thermochemical hydrogen production branch; the thermochemical hydrogen production branch comprises: a photothermal system, a thermal storage system, and a thermochemical hydrogen production system;
the output end of the photo-thermal system is connected with the input end of the heat storage system;
the output end of the heat storage system is connected with the input end of the thermochemical hydrogen production system;
and a gas outlet of the thermochemical hydrogen production system outputs hydrogen.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: a branch for producing hydrogen by electrolyzing water; the water electrolysis hydrogen production branch comprises: a new energy power generation system and a water electrolysis hydrogen production system;
the output end of the new energy power generation system is connected with the input end of the water electrolysis hydrogen production system;
and a gas outlet of the water electrolysis hydrogen production system outputs hydrogen.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: a steam turbine;
the input end of the steam turbine is connected with the output end of the heat storage system;
and the output end of the steam turbine is connected with the input end of the water electrolysis hydrogen production system.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: a power supply system;
the input end of the power supply system receives the electric energy of the clean hydrogen production and energy supply system;
the output of the power supply system supplies power to a load.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: at least one hydrogen storage tank;
the air inlet of the hydrogen storage tank is connected with a corresponding hydrogen production system;
the gas storage tank is used for storing hydrogen.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: a fuel cell;
the input end of the fuel cell is connected with the gas outlet of the corresponding hydrogen storage tank;
the output end of the fuel cell is connected with the power supply system.
Optionally, in the above clean hydrogen production and energy supply system, further comprising: a hydrogen station;
the gas inlet of the hydrogenation station is connected with the gas outlet of the hydrogen storage tank;
and the gas outlet of the hydrogenation station is connected with hydrogen utilization equipment.
Optionally, in the above clean hydrogen production and energy supply system, the new energy power generation system includes: at least one of a photovoltaic system and a fan system.
Optionally, in the clean hydrogen production and energy supply system, the thermochemical hydrogen production system uses at least one of ammonia decomposition hydrogen production and metal hydride decomposition hydrogen production.
Optionally, in the above clean hydrogen production and energy supply system, the heat storage system includes: at least one of sensible heat storage, latent heat storage, and thermochemical heat storage.
From the technical scheme, the clean hydrogen production and energy supply system provided by the invention comprises: a thermochemical hydrogen production branch; the thermochemical hydrogen production branch comprises: a photothermal system, a thermal storage system, and a thermochemical hydrogen production system; the output end of the photo-thermal system is connected with the input end of the heat storage system; the output end of the heat storage system is connected with the input end of the thermochemical hydrogen production system; a gas outlet of the thermochemical hydrogen production system outputs hydrogen; therefore, the photo-thermal system is combined with the heat storage system, hydrogen production can be continuously driven for 24 hours, and meanwhile, the produced hydrogen can be supplied to hydrogen equipment, so that the hydrogen production effect is obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 7 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention;
FIG. 8 is a schematic diagram of another clean hydrogen production and energy supply system provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the application provides a clean hydrogen production and energy supply system, which is used for solving the problems that wind energy, solar energy and the like in the prior art are greatly influenced by weather and climate factors, and discontinuous output of the wind energy, solar energy and the like causes the problem that continuous hydrogen production cannot be realized.
Referring to fig. 1, the clean hydrogen production and energy supply system comprises: a branch for thermochemical hydrogen production.
The thermochemical hydrogen production branch is mainly used for obtaining solar heat and producing hydrogen according to the solar heat to obtain hydrogen.
In the process of preparing hydrogen by the thermochemical hydrogen preparation branch, the generated hydrogen is clean energy, and the solar heat obtained by the hydrogen is also clean energy, so that pollutants are not generated in the hydrogen preparation process of the clean hydrogen preparation and energy supply system.
Specifically, the thermochemical hydrogen production branch comprises: a photothermal system 10, a thermal storage system 20, and a thermochemical hydrogen production system 30.
The output end of the photo-thermal system 10 is connected with the input end of the heat storage system 20.
That is, after the photothermal system 10 collects the heat of the solar energy, the collected heat is output to the thermal storage system 20.
The heat storage system 20 stores solar heat after receiving the solar heat.
The specific process of the photothermal system 10 for collecting solar heat is not described in detail here, and is within the scope of the present application.
The output end of the heat storage system 20 is connected with the input end of the thermochemical hydrogen production system 30.
That is, heat in heat storage system 20 may also be transferred to thermochemical hydrogen production system 30.
After receiving the heat, the thermochemical hydrogen production system 30 produces hydrogen based on the heat.
The gas outlet of the thermochemical hydrogen production system 30 outputs hydrogen.
That is, the thermochemical hydrogen production system 30 transfers hydrogen gas produced by itself to the outside, such as hydrogen supply for hydrogen-using equipment.
Of course, the hydrogen generated by the thermochemical hydrogen production system 30 can also be stored, and therefore, the detailed description is omitted here, and the hydrogen is within the protection scope of the present application as required.
The specific hydrogen production process of thermochemical hydrogen production system 30, which is not described in detail herein, is within the scope of the present application as detailed in the related art.
In this embodiment, the clean hydrogen production and energy supply system comprises: a thermochemical hydrogen production branch; the thermochemical hydrogen production branch comprises: a photothermal system 10, a thermal storage system 20, and a thermochemical hydrogen production system 30; the output end of the photo-thermal system 10 is connected with the input end of the heat storage system 20; the output end of the heat storage system 20 is connected with the input end of the thermochemical hydrogen production system 30; the gas outlet of the thermochemical hydrogen production system 30 outputs hydrogen; by combining the photo-thermal system 10 and the heat storage system 20, the hydrogen production can be continuously driven for 24 hours, and meanwhile, the produced hydrogen can be supplied to hydrogen equipment, so that the hydrogen production effect is obviously improved.
In practical application, clean hydrogen production energy supply system still includes: a branch for producing hydrogen by electrolyzing water.
The branch for producing hydrogen by electrolyzing water is mainly used for obtaining new energy sources such as solar energy and/or wind energy which can be used for power generation, generating power according to the new energy sources, and producing hydrogen according to the power to obtain hydrogen.
In the process of preparing hydrogen by the water electrolysis hydrogen preparation branch, the generated hydrogen is clean energy, and the obtained solar energy and/or wind energy are also clean energy, so that pollutants are not generated in the hydrogen preparation process of the clean hydrogen preparation and energy supply system.
Specifically, referring to fig. 2, the water electrolysis hydrogen production branch includes: a new energy power generation system 40 and a water electrolysis hydrogen production system 50.
The output end of the new energy power generation system 40 is connected with the input end of the water electrolysis hydrogen production system 50.
That is, the new energy power generation system 40 generates power by using the kinetic energy of solar energy or wind, and then transmits the generated electric energy to the electrolyzed water hydrogen production system 50 through its own output terminal.
The specific process of the new energy power generation system 40 using the kinetic energy of solar energy or wind is not described herein any more, and all of the processes are within the protection scope of the present application.
And a gas outlet of the water electrolysis hydrogen production system 50 outputs hydrogen.
After receiving the electric energy, the water electrolysis hydrogen production system 50 produces hydrogen according to the electric energy.
Meanwhile, the hydrogen production system 50 transmits hydrogen generated by itself to the outside, such as supplying hydrogen to electric equipment.
Of course, the hydrogen generated by the water electrolysis hydrogen production system 50 may also be stored, which is not described in detail herein, and is within the protection scope of the present application depending on the actual situation.
In practical application, referring to fig. 3, the clean hydrogen production and energy supply system further comprises: a steam turbine 60.
The input of the steam turbine 60 is connected to the output of the heat storage system 20.
That is, the input end of the turbine 60 receives the heat stored in the heat storage system 20 and generates power according to the heat.
The output end of the steam turbine 60 is connected with the input end of the electrolyzed water hydrogen production system 50.
That is, the output end of the turbine 60 transmits the electric energy generated by itself to the input end of the hydrogen production system by water electrolysis.
It should be noted that the electric energy of the steam turbine 60 may be transmitted to an electric power cable, and then the electric energy may be transmitted to the input end of the electrolytic water hydrogen production system 50 through the electric power cable.
That is, the power cable is used as a transmission medium. At this time, the new energy power generation system 40 may also transmit electric energy to the electrolyzed water hydrogen production system 50 through the power cable.
In practical applications, referring to fig. 4, the clean hydrogen production and energy supply system may further include: a power supply system 70.
That is, the clean hydrogen production and energy supply system can also realize power supply.
The input of the power supply system 70 receives the electrical energy of the clean hydrogen production and energy supply system.
That is, when the power plant in the clean hydrogen production and energy supply system includes only new energy power generation system 40, the input of power supply system 70 is connected to the output of new energy power generation system 40.
Specifically, the output end of the new energy power generation system 40 may be connected to the input end of the electrolyzed water hydrogen production system 50 and the input end of the power supply system 70 through power cables, respectively; of course, other connection manners are also possible, and are not described herein again, as long as it is ensured that both the electrolyzed water hydrogen production system 50 and the power supply system 70 receive electric energy, which are within the protection scope of the present application.
When the power generation equipment in the clean hydrogen production and energy supply system includes the new energy power generation system 40 and the steam turbine 60, the input end of the power supply system 70 is connected to the output end of the new energy power generation system 40 and the output end of the steam turbine 60, respectively.
Specifically, the output end of the new energy power generation system 40 and the output end of the steam turbine 60 may be respectively connected to the input end of the electrolyzed water hydrogen production system 50 and the input end of the power supply system 70 through power cables; of course, other connection manners are also possible, and are not described herein again, as long as it is ensured that both the electrolyzed water hydrogen production system 50 and the power supply system 70 receive electric energy, which are within the protection scope of the present application.
The output of the power supply system 70 supplies power to a load.
That is, the output of the power supply system 70 serves as an output of the clean hydrogen production and energy supply system to power an electrical load.
The specific power supplying process of the power supply system 70 is not described herein, and is within the scope of the present application.
In practical applications, referring to fig. 5, the clean hydrogen production and energy supply system may further include: at least one hydrogen storage tank 80.
And the air inlet of the hydrogen storage tank 80 is connected with a corresponding hydrogen production system.
The gas storage tank is used for storing hydrogen.
Specifically, when the number of the hydrogen storage tanks 80 is 1, the hydrogen storage tanks 80 need to be connected to the gas outlets of all hydrogen production systems in the clean hydrogen production and energy supply system.
For example, where the hydrogen production system of the clean hydrogen production and energy supply system includes only thermochemical hydrogen production system 30, the gas inlet of the hydrogen storage tank 80 is connected to the gas outlet of the thermochemical hydrogen production system 30.
When the hydrogen production system in the clean hydrogen production and energy supply system comprises the water electrolysis hydrogen production system 50 and the thermochemical hydrogen production system 30, the gas inlet of the hydrogen storage tank 80 is respectively connected with the gas outlet of the thermochemical hydrogen production system 30 and the gas outlet of the water electrolysis hydrogen production system 50.
In this case, the hydrogen storage tank 80 may be provided with only one air inlet; that is, the hydrogen of the two hydrogen production systems is gathered and then transmitted to the hydrogen storage tank 80 through the same air inlet. The hydrogen storage tank 80 may also have at least two gas inlets, that is, the hydrogen gas of the two hydrogen production systems is respectively transmitted to the hydrogen storage tank 80 through the corresponding gas inlets and then collected.
When the number of the hydrogen storage tanks 80 is at least two, the hydrogen storage tanks 80 can be connected with the gas outlets of all the hydrogen production systems in the clean hydrogen production and energy supply system, or can be connected with the gas outlet of only one hydrogen production system in the clean hydrogen production and energy supply system.
For example, when the hydrogen production system of the clean hydrogen production and energy supply system includes only the thermal chemical hydrogen production system 30, the gas inlet of each hydrogen storage tank 80 is connected to the gas outlet of the thermal chemical hydrogen production system 30.
When the hydrogen production system in the clean hydrogen production and energy supply system comprises the water electrolysis hydrogen production system 50 and the thermochemical hydrogen production system 30, the gas inlets of the hydrogen storage tanks 80 are respectively connected with the gas outlet of the thermochemical hydrogen production system 30 and the gas outlet of the water electrolysis hydrogen production system 50.
Taking two hydrogen storage tanks 80 as an example, the two hydrogen storage tanks 80 may correspond to two hydrogen production systems one by one, and each hydrogen storage tank 80 is connected to the respective hydrogen production system. For example, the gas outlet of the first hydrogen storage tank 80 is connected with the gas inlet of the thermochemical hydrogen production system 30; the gas outlet of the second hydrogen storage tank 80 is connected with the gas inlet of the electrolyzed water hydrogen production system 50. Or the two hydrogen storage tanks 80 may be connected with both hydrogen production systems, for example, the gas outlet of the first hydrogen storage tank 80 is connected with the gas inlet of the thermochemical hydrogen production system 30 and the gas inlet of the electrolyzed water hydrogen production system 50; the gas outlet of the second hydrogen storage tank 80 is connected with the gas inlet of the thermochemical hydrogen production system 30 and the gas inlet of the electrolyzed water hydrogen production system 50.
Similarly, the hydrogen storage tank 80 may be provided with only one air inlet; that is, the hydrogen of the two hydrogen production systems is gathered and then transmitted to the hydrogen storage tank 80 through the same air inlet. The hydrogen storage tank 80 may also have at least two gas inlets, that is, the hydrogen gas of the two hydrogen production systems is respectively transmitted to the hydrogen storage tank 80 through the corresponding gas inlets and then collected.
In practical applications, referring to fig. 6, the clean hydrogen production and energy supply system may further include: a fuel cell 90.
The input end of the fuel cell 90 is connected to the gas outlet of the corresponding hydrogen storage tank 80.
That is, the input end of the fuel cell 90 takes the hydrogen gas of the corresponding hydrogen storage tank 80 and generates electricity based on the hydrogen gas.
The output of the fuel cell 90 is connected to the power supply system 70.
That is, the output terminal of the fuel cell 90 outputs the electric energy generated by itself to the electric power supply system 70.
As is clear from the above description, the number of the hydrogen storage tanks 80 may be 1 or more. Similarly, the number of the fuel cells 90 may be 1, or may be multiple, and the specific number thereof is determined according to the actual situation and is within the protection scope of the present application.
The relationship between the hydrogen storage tank 80 and the fuel cell 90 may be one-to-one, one-to-many, or many-to-one.
Specifically, when the hydrogen storage tanks 80 and the fuel cells 90 are in a one-to-one correspondence, the input end of each fuel cell 90 is connected to the gas outlet of the corresponding hydrogen storage tank 80, and each fuel cell 90 generates electricity according to the hydrogen gas and transmits the electric energy to the power supply system 70.
It should be noted that each fuel cell 90 may also transmit electric energy to the electric power supply system 70 through the above-mentioned electric power cable. If each fuel cell 90 transmits its own generated electric power to the electric power cable, the electric power cable transmits the electric power to the electric power supply system 70.
Specifically, when the hydrogen storage tanks 80 and the fuel cells 90 are in a one-to-many relationship, there is at least one gas outlet of the hydrogen storage tank 80 connected to the input terminals of the plurality of fuel cells 90, and each fuel cell 90 generates electricity according to hydrogen gas and transmits electric energy to the power supply system 70.
It should be noted that each fuel cell 90 may also transmit electric energy to the electric power supply system 70 through the above-mentioned electric power cable. If each fuel cell 90 transmits its own generated electric power to the electric power cable, the electric power cable transmits the electric power to the electric power supply system 70.
Specifically, when the relationship between the hydrogen storage tanks 80 and the fuel cells 90 is a many-to-one relationship, there is at least one fuel cell 90 whose input end is connected to the gas outlet of the plurality of hydrogen storage tanks 80, respectively, and each fuel cell 90 generates electricity according to hydrogen gas and transmits electric energy to the power supply system 70.
It should be noted that each fuel cell 90 may also transmit electric energy to the electric power supply system 70 through the above-mentioned electric power cable. If each fuel cell 90 transmits its own generated electric power to the electric power cable, the electric power cable transmits the electric power to the electric power supply system 70.
When the number of hydrogen storage tanks 80 and the number of fuel cells 90 are both plural, at least two of the one-to-one correspondence relationship, the one-to-many relationship, and the many-to-one relationship may be combined.
One of these cases is exemplified:
the first hydrogen storage tank 80 is correspondingly connected to the first fuel cell 90.
The second hydrogen storage tank 80 is connected to the second fuel cell 90, the third fuel cell 90, and the fourth fuel cell 90, respectively.
The third hydrogen storage tank 80, the fourth hydrogen storage tank 80, and the fifth hydrogen storage tank 80, the sixth hydrogen storage tank 80 are connected to the fifth fuel cell 90.
The first fuel cell 90, the second fuel cell 90, the third fuel cell 90, the fourth fuel cell 90, and the fifth fuel cell 90 are all connected to the electric power supply system 70 by electric power cables.
A switch valve may be provided between the fuel cell 90 and the hydrogen storage tank 80, and whether or not the hydrogen storage tank 80 transfers hydrogen to the fuel cell 90 may be controlled by the opening and closing of the switch valve.
The controller can be additionally arranged, and the controller in the system can be adopted to realize the control.
Specifically, the controller sends a signal to the start switch of the fuel cell 90 when a peak in power usage is detected to start the fuel cell 90 to supply power.
The specific process of detecting the power consumption peak is not repeated here, and the specific process is determined according to the actual situation and is within the protection range of the application.
In practical application, referring to fig. 7, the clean hydrogen production and energy supply system may further include: a hydrogen station 100.
That is, the clean hydrogen production and energy supply system can also realize hydrogen supply.
And the air inlet of the hydrogen filling station 100 is connected with the air outlet of the hydrogen storage tank 80.
That is, where the hydrogen production system of the clean-up hydrogen production and energy supply system includes only thermochemical hydrogen production system 30, the input of the hydrogen plant 100 is connected to the output of the thermochemical hydrogen production system 30.
Specifically, the output end of the thermochemical hydrogen production system 30 may be connected to the air inlet of the hydrogen filling station 100 through a hydrogen pipeline; of course, other connection manners may also be adopted, which are not described herein again, as long as the air inlets of the hydrogen station 100 all receive the electric energy, and all are within the protection scope of the present application.
When fuel cell 90 is included in the clean hydrogen production and energy supply system, the output of thermochemical hydrogen production system 30 is connected to the input of fuel cell 90 via a hydrogen pipe.
When the hydrogen production system in the clean hydrogen production and energy supply system comprises the thermochemical hydrogen production system 30 and the water electrolysis hydrogen production system 50, the input end of the hydrogen plant 100 is respectively connected with the gas outlet of the thermochemical hydrogen production and the gas outlet of the water electrolysis hydrogen production system 50.
Specifically, the gas outlet of the thermochemical hydrogen production system 30 and the gas outlet of the electrolyzed water hydrogen production system 50 are respectively connected to the input end of the fuel cell 90 and the gas inlet of the hydrogen station 100 through hydrogen pipes; of course, other connection manners are also possible, and are not described herein again, as long as it is ensured that both the electrolyzed water hydrogen production system 50 and the power supply system 70 receive electric energy, which are within the protection scope of the present application.
It should be noted that, when the clean hydrogen production and energy supply system further includes the hydrogen storage tank 80, the hydrogen station 100 may obtain hydrogen through the hydrogen storage tank 80.
Specifically, the number of the hydrogen storage tanks 80 may be plural or 1.
When the number of the hydrogen storage tanks 80 is 1, the hydrogen storage tanks 80 collect hydrogen from two hydrogen production systems and transmit the hydrogen to the hydrogen plant 100.
When the number of the hydrogen storage tanks 80 is plural, each hydrogen storage tank 80 stores hydrogen gas of the corresponding hydrogen production system and then transmits the hydrogen gas to the hydrogen refueling station 100.
The hydrogen gas in each hydrogen storage tank 80 can be transmitted to the hydrogen station 100 through the same hydrogen pipeline, or can be transmitted to the hydrogen station 100 through the respective corresponding hydrogen pipelines.
Specifically, the hydrogen transfer process between the hydrogen storage tank 80 and the hydrogen refueling station 100 is not specifically limited herein, and is within the scope of the present application.
The gas outlet of the hydrogen filling station 100 is connected with a hydrogen utilization device.
That is, the outlet of the hydrogen station 100 is used as an output of the clean hydrogen production and energy supply system to supply hydrogen to the hydrogen consuming equipment.
The specific hydrogen supply process of the hydrogen station 100 is not described herein any more, and is within the scope of the present application depending on the actual situation.
In practical applications, the new energy power generation system 40 includes: at least one of a photovoltaic system and a fan system.
That is, the new energy power generation system 40 may include only a photovoltaic system.
Alternatively, the new energy power generation system 40 may include only a fan system.
Still alternatively, the new energy power generation system 40 may include a photovoltaic system and a fan system.
The specific structure of the new energy power generation system 40 is not described in detail herein, and is within the protection scope of the present application depending on the actual situation.
The clean hydrogen production and energy supply system is described with the structure shown in fig. 8:
the photovoltaic system 1 generates electricity by using solar energy, and the fan system 2 generates electricity by using kinetic energy of wind. The photothermal system 3 collects heat of solar energy and stores the heat in the heat storage system 4. The heat storage system 4 drives a steam turbine 5 to generate electricity on one hand, and drives a thermochemical hydrogen production system 7 to produce hydrogen on the other hand. The hydrogen outlet of the thermochemical hydrogen production system 7 is connected with the hydrogen inlet of the hydrogen storage tank 8. The water electrolysis hydrogen production system 6 produces hydrogen by using electric power, and a hydrogen outlet of the water electrolysis hydrogen production system 6 is connected with a gas inlet of the hydrogen storage tank 8. The hydrogen outlet of the hydrogen storage tank 8 is connected to the hydrogen inlet of the fuel cell 9 on the one hand and to the hydrogen inlet of the hydrogen station 11 on the other hand. The electricity generated by the fuel cell 9 is supplied to the electric power supply system 10.
During the electricity utilization peak period, when the wind power and photovoltaic power generation amount cannot meet the electric load demand, the heat storage system 4 can drive the steam turbine 5 to generate electricity, and the hydrogen storage system 8 drives the fuel cell 9 to generate electric energy, so that the electric energy can meet the electric load demand.
In the electricity utilization peak period, when the wind power and photovoltaic power generation amount cannot meet the electric load demand, the heat storage system 4 drives the steam turbine 5 to generate electricity, and the hydrogen storage system 8 drives the fuel cell 9 to generate electric energy, so that the electric energy is ensured to meet the electric load demand;
in the electricity consumption valley period, when the wind power and photovoltaic power generation amount exceeds the electric load demand, redundant electric energy drives the electrolyzed water hydrogen production system 6 to produce hydrogen and then store the hydrogen in the hydrogen storage tank 8, and redundant heat energy collected by the photo-thermal system 3 can be stored in the heat storage system 4 or drives the thermochemical hydrogen production system 7 to produce hydrogen and then store the hydrogen in the hydrogen storage tank 8, so that the absorption effect is realized.
In practical applications, the thermochemical hydrogen production system 30 employs at least one of ammonia decomposition hydrogen production and metal hydride decomposition hydrogen production.
Of course, other hydrogen production technologies can also be used in the thermochemical hydrogen production system 30, and the details are not described herein and are within the scope of the present application.
In practical applications, the heat storage system 20 includes: at least one of sensible heat storage, latent heat storage, and thermochemical heat storage.
Of course, the heat storage system 20 may also adopt other heat storage technologies, which are not described herein again and are all within the protection scope of the present application.
It should be noted that, with the rapid increase of new energy, the grid-connected operation increases both the peak-load and frequency-modulation pressure of the power grid and the regulation pressure of the conventional power supply.
In the present embodiment, the photothermal system 10 is combined with the heat storage system 20, so that the hydrogen production can be continuously driven for 24 hours. The hydrogen is comprehensively produced by various ways such as photovoltaic, wind power, heat energy and the like, so that the hydrogen can be continuously produced, and the yield can be improved. Meanwhile, the new energy system is combined with the heat storage system 20 and the hydrogen storage system, so that the peak regulation and absorption effects of electric power can be achieved, and the stable supply of electric energy and hydrogen energy can be realized; in addition, 100% of electric energy and hydrogen energy generated by the clean hydrogen production and energy supply system are derived from solar energy and wind energy, and the system is clean, environment-friendly and high in economic benefit.
Features described in the embodiments in the present specification may be replaced with or combined with each other, and the same and similar portions among the embodiments may be referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A clean hydrogen production and energy supply system, comprising: a thermochemical hydrogen production branch; the thermochemical hydrogen production branch comprises: a photothermal system, a thermal storage system, and a thermochemical hydrogen production system;
the output end of the photo-thermal system is connected with the input end of the heat storage system;
the output end of the heat storage system is connected with the input end of the thermochemical hydrogen production system;
and a gas outlet of the thermochemical hydrogen production system outputs hydrogen.
2. The clean hydrogen and energy production and supply system of claim 1, further comprising: a branch for producing hydrogen by electrolyzing water; the water electrolysis hydrogen production branch comprises: a new energy power generation system and a water electrolysis hydrogen production system;
the output end of the new energy power generation system is connected with the input end of the water electrolysis hydrogen production system;
and a gas outlet of the water electrolysis hydrogen production system outputs hydrogen.
3. The clean hydrogen and energy production and supply system of claim 2, further comprising: a steam turbine;
the input end of the steam turbine is connected with the output end of the heat storage system;
and the output end of the steam turbine is connected with the input end of the water electrolysis hydrogen production system.
4. The clean hydrogen and energy production and supply system of claim 2, further comprising: a power supply system;
the input end of the power supply system receives the electric energy of the clean hydrogen production and energy supply system;
the output of the power supply system supplies power to a load.
5. The clean hydrogen and energy production and supply system of claim 2, further comprising: at least one hydrogen storage tank;
the air inlet of the hydrogen storage tank is connected with a corresponding hydrogen production system;
the gas storage tank is used for storing hydrogen.
6. The clean hydrogen and energy production and supply system of claim 5, further comprising: a fuel cell;
the input end of the fuel cell is connected with the gas outlet of the corresponding hydrogen storage tank;
the output end of the fuel cell is connected with the power supply system.
7. The clean hydrogen and energy production and supply system of claim 5, further comprising: a hydrogen station;
the gas inlet of the hydrogenation station is connected with the gas outlet of the hydrogen storage tank;
and the gas outlet of the hydrogenation station is connected with hydrogen utilization equipment.
8. The clean hydrogen and energy production and supply system of claim 2, wherein the new energy power generation system comprises: at least one of a photovoltaic system and a fan system.
9. The clean hydrogen and energy production system according to any one of claims 1 to 8, wherein the thermochemical hydrogen production system employs at least one of ammonia decomposition hydrogen production, metal hydride decomposition hydrogen production.
10. The clean hydrogen and energy production and supply system according to any one of claims 1 to 8, wherein the heat storage system comprises: at least one of sensible heat storage, latent heat storage, and thermochemical heat storage.
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| CN114395775A (en) * | 2022-01-30 | 2022-04-26 | 华中科技大学 | Closed clean energy hydrogen production energy storage system |
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