CN110816800A - Diesel-fuel combined power device, hydrogen fuel cell hybrid power system and fuel supply method thereof - Google Patents
Diesel-fuel combined power device, hydrogen fuel cell hybrid power system and fuel supply method thereof Download PDFInfo
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- CN110816800A CN110816800A CN201810887779.1A CN201810887779A CN110816800A CN 110816800 A CN110816800 A CN 110816800A CN 201810887779 A CN201810887779 A CN 201810887779A CN 110816800 A CN110816800 A CN 110816800A
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- 239000000446 fuel Substances 0.000 title claims abstract description 82
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 62
- 239000001257 hydrogen Substances 0.000 title claims abstract description 59
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims abstract description 49
- 230000005611 electricity Effects 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 76
- 238000002407 reforming Methods 0.000 claims description 33
- 239000006200 vaporizer Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 21
- 239000004071 soot Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
- H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
- B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
- B63H2021/205—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ocean & Marine Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a diesel-fuel combined power device and a hybrid power system of a hydrogen fuel cell, belonging to the field of energy conservation and emission reduction. H from storage tanks or on-line production2The hydrogen fuel cell is supplied with the generated electricity to drive the motor. Excess unreacted H in the fuel cell2Enters a collecting tank and then is sprayed into an air inlet channel of the diesel engineAnd also into the swirler of the gas turbine so that the combustion chambers of the diesel engine and the gas turbine contain a certain proportion of H2；H2The flame propagation speed is high, H, O and OH active radicals are generated in the combustion process, so that the combustion speed of main fuel of the diesel engine and the gas turbine is increased, the thermal efficiency of the diesel-combustion combined power plant is improved, and the emission of soot, CO and HC is reduced.
Description
Technical Field
The invention relates to the technical field of ship power systems, in particular to a diesel-fuel combined power device, a hydrogen fuel cell hybrid power system and a fuel supply method thereof.
Background
The diesel-combustion combined power plant has a high thermal efficiency, but NOx (nitrogen oxide) and soot emissions are high in the diffusion combustion mode. Under the low-load working condition, the efficiency of the diesel-fuel combined power device is lower.
Diesel engine intake air H2Can reduce soot, CO and HC in the emission, and adds H in the combustion chamber of the gas turbine2The stability of lean combustion can be improved. But H2The carrying and filling costs are high.
Disclosure of Invention
In light of the above-noted problems of diesel soot, CO and HC emissions and gas turbine lean burn stability, a diesel-fueled combined power plant and hydrogen fuel cell hybrid power system and method of fueling the same are provided.
The invention mainly utilizes the unreacted excess H in the hydrogen fuel cell2Collected and supplied from the diesel engine inlet and the gas turbine swirler. H2The flame propagation speed is high, a large amount of H, O and OH active radicals are generated in the combustion process, and the rapid and stable combustion of the mixed gas in the cylinder of the diesel engine is promoted, so that the thermal efficiency of the diesel engine is improved, the emission of soot, CO and HC is reduced, and the lean combustion stability of the gas turbine is improved.
The technical means adopted by the invention are as follows:
a diesel-fuel hybrid power plant and hydrogen fuel cell hybrid power system comprising: the main fuel of the diesel engine and the gas turbine is provided by a storage tank, and the motor is driven by the power generated by a hydrogen fuel cell; it also comprises a H2Storage tank and a H2A recovery tank;H2the storage tank passes through the pipeline to lead H2Supplying hydrogen fuel cell to generate electricity and electrically driving motor; unreacted excess H in a hydrogen fuel cell2Flows into H through the pipeline2A recovery tank; h2The recycling tank is connected with H preset at the position of an air inlet channel of the diesel engine2Swirler H for a nozzle and a gas turbine combustion chamber2And (4) a nozzle.
Further, it also includes a hydrogen supply unit for supplying hydrogen fuel cell H2The methanol reforming device of (1);
a methanol reformer, comprising: the system comprises a methanol storage tank, a vaporizer, a reforming reactor, a vaporizer heat exchanger and a reforming reactor heat exchanger, wherein the vaporizer heat exchanger and the reforming reactor heat exchanger are used for absorbing heat of an exhaust pipe of a diesel engine or a gas turbine;
the methanol water solution in the methanol storage tank flows through the vaporizer and the reforming reactor, and generates H as the main component under the action of the catalyst2And CO2The reformed gas passes through a separation purifier to purify H2Supplying the hydrogen fuel cell; the heat required by the heating vaporizer and the reforming reactor comes from an exhaust pipe of a diesel engine or a gas turbine, and the temperature is controlled by a vaporizer heat exchanger and a reforming reactor heat exchanger;
further, the main fuel of the diesel engine and the gas turbine can use one or a mixture of several of diesel oil, butanol, dimethyl ether and gasoline;
method for supplying fuel to a combined diesel and fuel power plant, in which the inlet channel H is arranged in the intake stroke of a diesel engine2Nozzle spray H2Enters the cylinder along with the intake air; near compression top dead center, the main fuel injector injects main fuel in the presence of H2The mixed gas in the cylinder is combusted; h injected in the intake duct2Derived from H2And (6) a recovery tank. Gas turbine combustion chamber having swirler H2Nozzles for adjusting the swirler H according to the variation of the operating conditions of the gas turbine2The injection quantity of the nozzle enables the gas turbine to stably work under the lean combustion condition. According to H of hydrogen fuel cell2Demand, control from H2H with storage tank supplying hydrogen fuel cell2(ii) a Unreacted residual H in hydrogen fuel cells2Into H2A recovery tank;
according to the invention adopting the technical scheme, the hybrid power system consists of the diesel-fuel combined power device and the motor driven by the hydrogen fuel cell for power generation. The main fuel of diesel engines is direct injection in the cylinder. Injecting a small amount of H in the intake passage2The main fuel injector injects main fuel, which contains H in the cylinder, near the compression top dead center in the cylinder along with intake air2And (3) carrying out compression ignition in a lean mixture. Injection of H in diesel engine inlet duct2Excess H from unreacted hydrogen in a hydrogen fuel cell2. The gas turbine adopts a lean combustion mode under the low-load working condition and uses a swirler H2Nozzle spray H2And forms a lean combustible mixture with the main fuel and air injected from the combustor nozzle. H required for hydrogen fuel cell2Can be directly from H2The storage tank can also be prepared by reforming methanol and water, and the reaction is CH4O + H2O＝CO2+3H2. The methanol water solution enters a vaporizer to form superheated methanol steam and steam, the superheated methanol steam and the steam enter a reforming reactor, and H is prepared by reforming2After separation and purification, the hydrogen is supplied to a hydrogen fuel cell to generate electricity and drive a motor electrically. Unreacted excess H in hydrogen fuel cells2Collected and supplied to a diesel engine and a gas turbine. The heat required for the vaporization superheating of the aqueous methanol solution and the hydrogen production by reforming is provided by the exhaust gas of diesel engines and gas turbines.
Further, the diesel-fuel combined power plant and the hydrogen fuel cell hybrid power system adopt the following control strategies: under the low-load working condition, only the fuel cell power generation driving motor is used for providing power for the ship, and the diesel engine and the gas turbine output shaft clutch are disengaged; under the working condition of medium and low load, the fuel cell power generation driving motor and the diesel engine are used for providing power for the ship together, and the clutch of the output shaft of the gas turbine is disengaged; under the working condition of medium and high load, the fuel cell power generation driving motor and the diesel-fuel combined power device are used together to provide power for the ship.
Compared with the prior art, the invention has the following advantages:
the invention has the beneficial effects that: adding proper amount of H into the mixed gas in the cylinder of the diesel engine2Due to H2The flame propagation speed is high, and a great amount of H, O and OH are generated in the combustionActive radicals for causing main fuel to be sprayed in the cylinder with H2The combustion in the thin mixed gas is rapid and stable, thereby improving the thermal efficiency of the diesel engine and reducing the carbon smoke, CO and HC. Injection of H into a swirler of a gas turbine combustion chamber2And improve the fuel-lean stability. In addition, the heat required by the vaporization overheating of the methanol aqueous solution and the hydrogen production by reforming is provided by the exhaust gas of the diesel engine and the gas turbine, so that the energy utilization efficiency of the hybrid power system is further improved. The diesel-fuel combined power device and the hydrogen fuel cell hybrid power system improve the energy utilization efficiency under the low-load working condition and improve the maximum propelling power of the ship.
Based on the reason, the invention can be widely popularized in the field of ship power systems.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 diesel-fuel combined power plant and a hydrogen fuel cell hybrid power system according to the present invention.
FIG. 2 is a schematic structural diagram of a diesel-fuel combined power plant and a methanol-to-hydrogen fuel cell hybrid power system of the present invention.
In the figure: 1. an air inlet channel of the diesel engine; 2. an intake valve; 3. oil sprayer 4 and air inlet channel H2A nozzle; 5. h2And air mixture; 6. a diesel engine nozzle; 7. a piston; 8. a crankshaft; 9. an exhaust pipe; 10. a main fuel storage tank; 11. h2A storage tank; 11a, a methanol storage tank; 12. a vaporizer; 12a, a vaporizer heat exchanger; 13. a reforming reactor; 13a, a reforming reactor heat exchanger; 14. a separation purifier; 15. a hydrogen fuel cell; 16. a motor; 17. h2A recovery tank; 18. a compressor; 19. a combustor nozzle; 20. swirler H2A nozzle; 21. a swirler; 22. a combustion chamber; 23. a turbine; 24; becomeAnd (5) a speed box.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
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 only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, the present invention provides a diesel-fuel hybrid power plant and a hydrogen fuel cell hybrid power system, comprising: a diesel-fuel combined power plant and an electric machine 16. Diesel hybrid power plants include diesel engines and gas turbines. The components of the diesel engine comprise an air inlet channel 1, an air inlet valve 2, an oil injector 3 and an air inlet channel H2Nozzle 4, diesel nozzle 6, piston 7, crankshaft 8, and exhaust pipe 9. The components of the gas turbine include a compressor 18, a combustor nozzle 19, and a swirler H2A nozzle 20, a swirler 21, a combustion chamber 22 and a turbine 23. The output shafts of the diesel engine, the gas turbine, and the electric machine 16 are all connected to the transmission 24 through a clutch. The main fuel of the diesel engine and the gas turbine is provided by a storage tank 10, and the motor is driven by the power generated by a hydrogen fuel cell 15; it also comprises a H2Tank 11 and an H2 A recovery tank 17; h2The storage tank 11 is connected with the H through a pipeline2A hydrogen fuel cell 15 for generating electricity and an electric drive motor 16; unreacted excess H in the hydrogen fuel cell 152Flows into H through the pipeline2 A recovery tank 17; h2The recycling tank is connected with H preset at the position of an air inlet channel of the diesel engine2Nozzle 4, swirler H for a gas turbine combustor2And (4) a nozzle.
As shown in fig. 2, further, a fuel cell 15H for supplying hydrogen is further included2Methanol reforming device of (1), hydrogen fuel cell hydrogen demand H2Or from methanol reforming.
A methanol reformer, comprising: a methanol storage tank 11a, a vaporizer 12, a reforming reactor 13, and a vaporizer heat exchanger 12a and a reforming reactor heat exchanger 13a for absorbing heat of the exhaust pipe 9 of the diesel engine and the gas turbine;
the vaporizer heat exchanger 12a and the reforming reactor heat exchanger 13a are disposed around the exhaust pipe 9 of the diesel engine or the gas turbine for directly absorbing heat of the exhaust pipe 9;
the aqueous methanol solution in the methanol storage tank 11a flows through the vaporizer 12 and the reforming reactor 13, and is produced into a methanol aqueous solution containing H as a main component under the action of the catalyst2And CO2The reformed gas is purified to obtain H through a separation purifier 142Supply to the hydrogen fuel cell 15; the heat required to heat the vaporizer 12 and the reforming reactor 13 comes from the diesel and gas turbine exhaust 9 and the temperature is controlled by the vaporizer heat exchanger 12a and the reforming reactor heat exchanger 13 a.
In the fuel supply method of the diesel-fuel combined power device, the air inlet channel H is arranged in the air suction stroke of the diesel engine2Nozzle spray H2Enters the cylinder along with the intake air; near compression top dead center, the main fuel injector 3 injects main fuel in the presence of H2The in-cylinder mixture 20 is combusted; h injected in the intake duct2Derived from H2 A recovery tank 17. Gas turbine combustion chamber having swirler H2Nozzles for adjusting the swirler H according to the variation of the operating conditions of the gas turbine2The injection quantity of the nozzle enables the gas turbine to stably work under the lean combustion condition. According to H of the hydrogen fuel cell 152Demand, control from H2H supplied from the storage tank 11 to the hydrogen fuel cell 152(ii) a Unreacted residual H in hydrogen fuel cells2Into H2 A recovery tank 17;
according to the invention adopting the technical scheme, the hybrid power system consists of the diesel-fuel combined power device and the motor driven by the hydrogen fuel cell for power generation. The main fuel of diesel engines is direct injection in the cylinder. Injecting a small amount of H in the intake passage2The main fuel injector 3 injects main fuel, which contains H in the cylinder, near the compression top dead center in the cylinder with intake air2The lean mixture 19 is compression-ignited. Injection of H in diesel engine inlet duct2Excess H derived from unreacted hydrogen in the hydrogen fuel cell 152. H required for hydrogen fuel cell 152Can be directly from H2The storage tank 11 can also be prepared by reforming methanol and water, and the reaction is CH4O + H2O＝CO2+3H2. The methanol water solution enters a vaporizer 12 to form superheated methanol steam and steam, the superheated methanol steam and the steam enter a reforming reactor 13, and H is prepared by reforming2Separated and purified, and then supplied to a hydrogen fuel cell 15 to generate power,an electric drive motor 16. Unreacted excess H in the hydrogen fuel cell 152Collected and supplied to the diesel engine. The heat required for the vaporization superheating of the aqueous methanol solution and the hydrogen production by reforming is provided by the exhaust gas of a diesel engine or a gas turbine.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A diesel-fuel hybrid power plant and hydrogen fuel cell hybrid power system comprising: firewood fires combined power device and motor (16), its characterized in that: the main fuel of the diesel engine and the gas turbine is provided by a storage tank (10), and the motor is driven by the power generation of a hydrogen fuel cell (15); it also comprises a H2A storage tank (11) and a H2A recovery tank (17); said H2The storage tank (11) is used for discharging H through a pipeline2A hydrogen fuel cell (15) for generating electricity and an electric drive motor (16); unreacted excess H in the hydrogen fuel cell (15)2Flows into H through the pipeline2A recovery tank (17); said H2The recycling tank is connected with H preset at the position of an air inlet channel of the diesel engine2A nozzle (4) and a nozzle (23) in a gas turbine swirler.
2. The diesel engine fuel supply method according to claim 1, characterized in that:
in the intake stroke, the intake passage H2Nozzle spray H2Enters the cylinder along with the intake air; near compression top dead center, the main fuel injector (3) injects main fuel in the presence of H2The mixed gas in the cylinder is combusted; h of injection in the air inlet channel2Derived from H2A recovery tank (17); according to H of the hydrogen fuel cell (15)2Demand, control from H2The storage tank (11) supplies H of the hydrogen fuel cell (15)2(ii) a Unreacted residual H in hydrogen fuel cells2Into H2A recovery tank (17).
3. The diesel-fueled hybrid power plant and hydrogen fuel cell hybrid power system according to claim 1, further comprising: for supplying hydrogen fuel cells (15) H2The methanol reforming device of (1);
the methanol reforming apparatus includes: a methanol storage tank (11a), a vaporizer (12), a reforming reactor (13), and a vaporizer heat exchanger (12a) and a reforming reactor heat exchanger (13a) for absorbing heat of an exhaust pipe (9) of a diesel engine and a gas turbine;
the methanol water solution in the methanol storage tank (11a) flows through a vaporizer (12) and a reforming reactor (13) and generates H as the main component under the action of a catalyst2And CO2The reformed gas is purified to obtain H through a separation purifier (14)2A hydrogen supply fuel cell (15); the heat required to heat the vaporizer (12) and the reforming reactor (13) comes from the diesel or gas turbine exhaust (9), and the temperature is controlled by the vaporizer heat exchanger (12a) and the reforming reactor heat exchanger (13 a).
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