WO2010089883A1 - Système de génération de puissance hybride - Google Patents

Système de génération de puissance hybride Download PDF

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Publication number
WO2010089883A1
WO2010089883A1 PCT/JP2009/052094 JP2009052094W WO2010089883A1 WO 2010089883 A1 WO2010089883 A1 WO 2010089883A1 JP 2009052094 W JP2009052094 W JP 2009052094W WO 2010089883 A1 WO2010089883 A1 WO 2010089883A1
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WIPO (PCT)
Prior art keywords
heat exchanger
pipe
power generation
fuel cell
generation system
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Application number
PCT/JP2009/052094
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English (en)
Japanese (ja)
Inventor
康 岩井
晋 中野
忠晴 岸部
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株式会社 日立製作所
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Priority to PCT/JP2009/052094 priority Critical patent/WO2010089883A1/fr
Publication of WO2010089883A1 publication Critical patent/WO2010089883A1/fr

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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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/40—Combination of fuel cells with other energy production systems
    • H01M2250/407—Combination of fuel cells with mechanical energy generators
    • 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

Definitions

  • the present invention relates to a hybrid power generation system of a fuel cell and a regenerative cycle gas turbine, and more particularly to a hybrid power generation system with improved power generation efficiency.
  • a fuel cell is basically a system that generates hydrogen by reacting with oxygen, and unlike a gas turbine or a reciprocating engine that generates electricity using a thermal cycle, it is a system that generates electricity directly using an electrochemical reaction. Because of their existence, their power generation efficiency is much higher than gas turbines.
  • the power generation efficiency can be significantly improved by combining the fuel cell with the gas turbine power generation system. This is because, in the gas turbine, the working fluid is heated by burning the fuel, but in the hybrid system of the gas turbine and the fuel cell, the fuel cell generates electricity with high efficiency by the electrochemical reaction, and the reaction energy is converted to electricity. This is because the energy of the heated working fluid can be recovered as power by the turbine after the remaining energy except the converted energy is released as heat to raise the temperature of the working fluid.
  • power generation efficiency is further improved by using a regenerative cycle gas turbine that recovers the heat of the gas turbine exhaust gas with a regenerative heat exchanger to raise the temperature, or by adding equipment that cools the compressor inlet air.
  • a fuel cell hybrid system that can be used (see, for example, Patent Document 1).
  • Patent Document 1 when the intake amount of the gas turbine is larger than the required flow rate of the fuel cell, a part of the regenerative heat exchanger outlet air is not supplied to the fuel cell but is directly bypassed and supplied to the gas turbine combustor The configuration is known.
  • An object of the present invention is to provide a hybrid power generation system that enables a gas turbine to operate efficiently while providing an operating temperature and an oxidant flow rate suitable for operating a fuel cell.
  • the present invention is a hybrid power generation system of a fuel cell and a gas turbine, wherein an oxidant pressurized by a compressor is branched into one for a fuel cell and one for a gas turbine A heat exchanger for exhaust gas is disposed so that the oxidant can be supplied to the fuel cell and the gas turbine at different temperatures and flow rates.
  • Such a configuration allows the gas turbine to operate efficiently while providing an operating temperature and oxidant flow rate suitable for operating the fuel cell.
  • the gas turbine is a regenerative cycle gas turbine
  • the heat exchanger is a regenerative heat exchanger
  • the heat exchanger raises the temperature of the oxidant pressurized by the compressor using the exhaust gas of the gas turbine, and the high temperature side heat exchanger section And a low temperature side heat exchanger portion, the first pipe for supplying the oxidant to the gas turbine from the outlet side of the low temperature side heat exchanger portion, and the outlet of the high temperature side heat exchanger portion
  • control means is provided for controlling the first flow control valve to gradually open from the fully closed state at the cold start of the fuel cell, and the first pipe
  • the temperature of the heat exchanger-supplied oxidant flowing through the second pipe is increased by reducing the flow rate of the oxidant flowing through the second pipe.
  • the heat exchanger is composed of a plurality of heat exchangers, and branched from a connecting pipe connecting the oxidant side pipes of the plurality of heat exchangers to a fuel cell Or, a pipeline network is formed to supply an oxidant for a gas turbine.
  • the heat exchanger is independent of the first heat exchanger constituting the low-temperature side heat exchanger section, and the first heat exchanger. And a second heat exchanger constituting the high-temperature side heat exchanger section, and the second heat exchange in addition to the first pipe on the outlet side of the first heat exchanger And a fourth pipe connected to the inlet side of the vessel.
  • the heat exchanger is configured to extract the oxidant for the fuel cell or the gas turbine from the middle of the pipe on the oxidant side in the heat exchanger. It is.
  • the first pipe is connected between the oxidant inlet and the oxidant outlet of the heat exchanger, and the oxidant outlet of the heat exchanger is The second pipe is connected.
  • piping on the oxidant side in the heat exchanger is separately provided for the fuel cell and the gas turbine, and the oxidant is separately supplied to the fuel cell and the gas turbine.
  • the heat exchanger is configured to be able to supply
  • piping on the oxidant side in the heat exchanger is divided into piping on the low temperature side heat exchanger unit and piping on the high temperature side heat exchanger unit,
  • the first pipe is connected between the outlet of the pipe of the low temperature side heat exchanger portion of the heat exchanger, and the second pipe is connected to the outlet of the high temperature side heat exchanger portion of the heat exchanger.
  • the heat exchanger is composed of two heat exchangers, and the oxidant side piping of the two heat exchangers is used as an oxidant for the fuel cell or the gas turbine, respectively.
  • a pipeline network is formed as a pipe for supplying
  • the heat exchanger is independent of the first heat exchanger constituting the low-temperature side heat exchanger section and the first heat exchanger. And a second heat exchanger constituting the high-temperature side heat exchanger section, wherein the first pipe is connected between the outlet of the first heat exchanger, and the second heat exchange is performed.
  • the second pipe is connected to the outlet of the vessel.
  • a part of the oxidizing agent supplied to the fuel cell is branched, and a pipe is provided so that it can be used for heating and cooling of the device constituting the fuel cell is there.
  • the heat exchanger raises the temperature of the oxidant pressurized by the compressor using the exhaust gas of the gas turbine, and the high temperature side heat exchanger section And a low temperature side heat exchanger portion, the first pipe for supplying the oxidant to the gas turbine from the outlet side of the low temperature side heat exchanger portion, and the outlet of the high temperature side heat exchanger portion
  • FIG. 1 is a system configuration diagram of a hybrid power generation system according to a first embodiment of the present invention. It is a timing chart which shows the operation sequence of the hybrid power generation system by a 1st embodiment of the present invention.
  • FIG. 7 is a system configuration diagram of a hybrid power generation system according to a second embodiment of the present invention. It is a system configuration
  • FIG. 1 is a system configuration diagram of a hybrid power generation system according to a first embodiment of the present invention.
  • the hybrid power generation system of this embodiment has a hybrid configuration of a gas turbine and a fuel cell.
  • the compressor 1 compresses and discharges the intake air, which is an oxidant, supplied from the pipe 50.
  • the compressor discharge air compressed by the compressor 1 is supplied to the regenerative heat exchanger 2 from the pipe 51.
  • the regenerative heat exchanger 10 is added in the present embodiment, and this point will be described later.
  • An outlet air of the regenerative heat exchanger 2 is supplied to the fuel cell 3 from a pipe 52, and a fuel such as hydrogen or natural gas is supplied from a pipe 62.
  • the fuel cell 3 generates electricity by the electrochemical reaction of the supplied oxidant (air) and fuel.
  • the outlet air of the fuel cell 3 is supplied to the combustor 4 from the pipe 53, the outlet exhaust gas composed of unused fuel and electrochemical reaction products is supplied from the pipe 63, and the fuel is supplied from the pipe 61. Ru.
  • the turbine 5 is driven by the combustion gas of the combustor 4 supplied by the pipe 54.
  • the generator 9 is connected to the turbine 5 in the same manner as the compressor 1 and is rotated by the driving force of the turbine 5 to generate electric power.
  • the fuel supplied by the pipes 61 and 62 is pressurized by the fuel pump 8 with the fuel supplied by the pipe 60.
  • the fuel cell 3 is a SOFC (Solid Oxide Fuel Cell), for example, there is a system that supplies natural gas instead of hydrogen as fuel, and reforms and supplies this. Steam is necessary for reforming natural gas, and a part of the outlet exhaust gas (supplied by the pipe 63) containing the water vapor generated by the electrochemical reaction of the fuel cell 3 is recycled, and the pipe 63R is used as a recycled exhaust gas. By returning to the fuel cell 3, the steam necessary for reforming is supplied.
  • SOFC Solid Oxide Fuel Cell
  • the regenerative heat exchanger 2 recovers the heat of the turbine exhaust gas supplied from the pipe 55 to raise the temperature of the compressor discharge air flowing through the pipe 51 (this regenerative heat exchanger 2 is provided Since the consumption of the gas turbine fuel flowing through the pipe 61 can be suppressed, the power generation efficiency is improved.
  • a regenerative heat exchanger 10 is provided in addition to the regenerative heat exchanger 2.
  • the inlet of the regenerative heat exchanger 10 is connected to the discharge port of the compressor 1 by a pipe 51.
  • the outlet of the regenerative heat exchanger 10 is connected to the inlet of the regenerative heat exchanger 2 by a pipe 52A.
  • the outlet of the regenerative heat exchanger 2 is connected to the inlet of the fuel cell 3 by a pipe 52F. That is, the regenerative heat exchanger 10 and the regenerative heat exchanger 2 are connected in series, and the discharge air of the compressor 1 is first heat-exchanged by the regenerative heat exchanger 10 and heated, and then the regenerative heat is generated.
  • the regenerative heat exchanger 2 is referred to as a high temperature exhaust gas side regenerative heat exchanger (high temperature side heat exchanger) 2 and the regenerative heat exchanger 10 is a low temperature exhaust gas side regenerative heat exchanger (low temperature side heat exchanger) 10 It is called.
  • the outlet of the low temperature side heat exchanger 10 is connected to the inlet of the high temperature side heat exchanger 2 by the pipe 52A, and is connected to the combustor 4 by the pipe 52G. That is, the air supplied from the compressor 51 is branched into the supply air of the combustor 4 muffled by the low temperature side heat exchanger 10 and the supply air of the high temperature side heat exchanger 2. Thereby, the amount of air of the fuel cell 3 can be adjusted by adjusting the supply air of the combustor 4, and the outlet air heated to an air temperature suitable for the operation of the fuel cell 3 is supplied to the fuel cell 3 As a result, the sound operation of the fuel cell 3 and the improvement of the plant performance can be simultaneously achieved.
  • compressor discharge air is supplied as supply air for the fuel cell 3 through the pipe 52F, and air is supplied to the combustor 4 via the fuel cell 3 to start the gas turbine.
  • the air from which the heat quantity of the exhaust gas of the gas turbine 5 is recovered to the maximum can be supplied to the fuel cell 3 through the pipe 52F and can be used to raise the temperature of the fuel cell 3, so the start of the fuel cell 3 can be accelerated.
  • the start-up time of can be shortened.
  • the low temperature side heat exchanger 10 By extracting a part of the outlet air to the combustor 4 through the pipe 52G, the flow rate of the inflowing air of the high temperature side heat exchanger 2 can be reduced to raise the temperature of the air supplied to the fuel cell 3 through the pipe 52F. .
  • the temperature of the turbine exhaust gas is about 650 ° C.
  • the air to be heated of the high temperature side heat exchanger 2 flowing through the pipe 52F can be heated up to about 600 ° C.
  • the auxiliary combustion device for raising the temperature of the fuel cell 3 to the operating temperature becomes unnecessary.
  • the pipe 52F is provided with the flow control valve V1, the pipe 61F is provided with the flow control valve V2, the pipe 52G is provided with the flow control valve V3, and the pipe 62 is provided with the flow control valve V4. There is.
  • the flow control valves V1, V2, V3 and V4 can continuously switch the flow rate of the fluid flowing through each pipe from 0% to 100%.
  • the opening degree of the flow control valves V1, V2, V3, V4 is controlled by the controller 12.
  • the controller 12 controls the opening degree of the flow control valves V1, V2, V3, V4 and the on-off valve V5 based on the flow rate, temperature, and pressure measurement signals 70 of each part.
  • FIG. 2 is a timing chart showing an operation sequence of the hybrid power generation system according to the first embodiment of the present invention.
  • the control device 12 starts the start of the gas turbine (GT) and the warming up of the fuel cell (FC). At this time, the controller 12 fully opens the flow control valve V1, fully closes the flow control valves V3 and V4, and closes the on-off valve V5. As the rotational speed of the gas turbine 5 increases, the flow control valve V1 is gradually opened to gradually increase the amount of fuel supplied from the pipe 61 to the gas turbine 5 to start the gas turbine 5. At this time, as the rotational speed of the gas turbine 5 increases, the amount of air discharged from the compressor 1 flowing through the pipe 51 also increases, so the amount of air flowing through the pipe 52F also increases.
  • the flow control valve V3 is fully closed and the on-off valve V5 is also closed, the entire amount of air discharged from the compressor 1 is sent from the low temperature side heat exchanger 10 to the high temperature side heat exchanger 2.
  • the heat of the exhaust gas of the gas turbine 5 is recovered by the heat exchangers 10 and 2 and is supplied to the fuel cell 3 as fuel cell supply air by the pipe 52F to raise the temperature of the fuel cell 3.
  • the controller 12 makes the flow rate of the fluid flowing through the pipes 52F and 61 constant.
  • the controller 12 gradually opens the flow control valve V3 to control the amount of air flowing in the pipe 52G. By increasing it, the flow rate of air flowing through the pipes 52A, 52F is reduced. Thereby, the temperature rise of the air by the high temperature side heat exchanger 2 is accelerated, and the temperature of the fuel cell 3 is raised.
  • the controller 12 When the temperature at which the fuel cell 3 can start is reached, at time t3, the controller 12 gradually opens the flow control valve V4 to start passing fuel through the fuel cell 3 and takes the load of the fuel cell 3 . At this time, since the fuel cell 3 generates heat by the reaction heat of the electrochemical reaction itself and the temperature rises, the controller 12 gradually closes the flow control valve V3 to reduce the amount of air flowing through the pipe 52G. Thus, the flow rate of air supplied from the pipe 52F to the fuel cell 3 is increased again, and the air temperature is properly adjusted.
  • the controller 12 keeps the flow control valves V1, V2, V3 and V4 at a constant opening degree.
  • the oxidant heated at the regenerative heat exchanger is taken out separately for the fuel cell and for the gas turbine, thereby supplying oxidants of different temperatures and flow rates to each. It becomes possible. Therefore, the fuel cell is designed to be supplied with oxidant at a temperature and oxidant flow rate suitable for its operation, and to the gas turbine after sufficient heat recovery in the regenerative heat exchanger at the remaining oxidant flow rate before supply. By doing this, both the sound operation of the fuel cell and the high efficiency operation of the gas turbine can be achieved.
  • the gas turbine is adjusted by adjusting the bypass flow rate, the bleed flow amount, etc. so that the heat of exhaust gas can be maximally recovered by the gas turbine intake in the regenerative heat exchanger and supplied to the fuel cell.
  • Can be used to raise the temperature of the fuel cell the startup time of the hybrid power generation system can be shortened, and the temperature of the fuel cell is raised to the operating temperature.
  • the heating device to be
  • FIG. 3 is a system configuration diagram of a hybrid power generation system according to a second embodiment of the present invention.
  • the same reference numerals as in FIG. 1 indicate the same parts.
  • the present embodiment differs from the embodiment shown in FIG. 1 in that the WAC (Water Atomizing inlet air Cooling) and the HAT (Humid Air Turbine: humidified turbine) are used as high humidity content air utilization. That is the point.
  • WAC and HAT will further improve plant performance. That is, since the WAC reduces the temperature of the intake air introduced into the compressor 1 by the pipe 50, it reduces the power necessary for driving the compressor 1 and increases the suction flow rate of the compressor 1 to reduce the temperature of the turbine 5.
  • the power generation efficiency can be improved by increasing the axial power.
  • the HAT In order to lower the temperature of the compressor discharge air discharged from the pipe 52, the HAT lowers the temperature of the exhaust gas discharged from the pipe 56 of the regenerative heat exchanger 2, and is supplied from the pipe 55 by the regenerative heat exchanger 2.
  • the power generation efficiency can be improved by increasing the heat recovery amount of the turbine exhaust gas.
  • the water supply pump 7 boosts the pressure of the water spray supply water supplied from the water supply tank 6 by the pipe 40, and the WAC water supply supplied by the pipe 41 and the HAT water supply supplied by the pipe 42 Supply to the inlet and outlet sides.
  • the steam generated by the fuel cell 3 and discharged to the turbine exhaust gas from the pipe 55 is condensed and recovered by the exhaust gas cooler 11 by the refrigerant supplied from the pipe 43.
  • the water is stored in the water supply tank 6 as recovered water.
  • the recovered water flowing through the pipe 44 can be used for the WAC and HAT. Therefore, the output can be improved and the efficiency can be improved while suppressing the external supply cost of the makeup water.
  • the power generation plant can supply both electricity and water. All of WAC water supply, HAT water supply and extraction water need to install and purify water treatment equipment by reverse osmosis membrane etc. in order to prevent equipment damage etc. and to reduce the impurity concentration according to the application. May occur.
  • the fuel cell 3 can be used without supplying water from the outside It becomes a power plant that can be operated only by recovering the water generated.
  • emitted from the piping 45 by external air can also be used as a refrigerant
  • the oxidant heated at the regenerative heat exchanger is taken out separately for the fuel cell and for the gas turbine, thereby supplying oxidants of different temperatures and flow rates to each. It becomes possible. Therefore, the fuel cell is designed to be supplied with oxidant at a temperature and oxidant flow rate suitable for its operation, and to the gas turbine after sufficient heat recovery in the regenerative heat exchanger at the remaining oxidant flow rate before supply. By doing this, both the sound operation of the fuel cell and the high efficiency operation of the gas turbine can be achieved.
  • the gas turbine is adjusted by adjusting the bypass flow rate, the bleed flow amount, etc. so that the heat of exhaust gas can be maximally recovered by the gas turbine intake in the regenerative heat exchanger and supplied to the fuel cell.
  • Can be used to raise the temperature of the fuel cell the startup time of the hybrid power generation system can be shortened, and the temperature of the fuel cell is raised to the operating temperature.
  • the heating device to be
  • FIG. 4 is a system configuration diagram of a hybrid power generation system according to a third embodiment of the present invention.
  • the same reference numerals as in FIGS. 1 and 2 indicate the same parts.
  • FIG. 5 is a timing chart showing an operation sequence of the hybrid power generation system according to the third embodiment of the present invention.
  • the present embodiment shown in FIG. 4 is different from the embodiment shown in FIG. 3 in that the air to be heated of the high temperature side heat exchanger 2 among the two stages of regenerative heat exchangers is supplied to the combustor 4 by the pipe 52G.
  • the heating air of the low temperature side heat exchanger 10 is supplied to the fuel cell 3 through the pipe 52F. Further, a flow control valve is used as the valve V5.
  • This configuration is effective when the operating temperature of the fuel cell 3 is low, and the temperature of the supply air 52F suitable for the operation of the fuel cell 3 is kept low while the turbine exhaust gas 55 is heated to the heated air by the high temperature side heat exchanger 2.
  • the power generation efficiency can be improved because the heat of
  • the controller 12 starts the start of the gas turbine (GT) and warms up the fuel cell (FC).
  • the control device 12 supplies the entire amount of the compressor discharge air 51 to the high temperature side heat exchanger 2 with the flow control valves V1 and V3 being fully closed.
  • the flow control valve V5 is gradually opened to gradually increase the amount of fuel supplied from the pipe 61 to the gas turbine 5 to start the gas turbine 5.
  • the discharge air amount of the compressor 1 flowing through the pipe 52A also increases with the increase of the rotational speed of the gas turbine 5, the air amount flowing through the pipe 52B also increases.
  • the flow control valve V1 since the flow control valve V1 is fully closed, the entire amount of air discharged from the compressor 1 is sent from the low temperature side heat exchanger 10 to the high temperature side heat exchanger 2.
  • the heat of the exhaust gas of the gas turbine 5 is recovered by the heat exchangers 10 and 2 and is supplied to the fuel cell 3 as fuel cell supply air by the pipe 52 B to heat the fuel cell 3.
  • start-up of the fuel cell 3 can be accelerated, and the start-up time of the hybrid power generation system can be shortened.
  • the controller 12 controls the flow rate of fluid flowing through the pipes 52B and 61. Be constant.
  • the controller 12 gradually opens the flow control valve V4 to increase the amount of fuel supplied to the fuel cell 3 by the pipe 62, and the flow control valve
  • the air temperature is properly changed while the air introduced into the fuel cell 3 is switched from the piping 52B to the bypass air and the fuel cell supply air from the piping 52F. While adjusting, the load on the fuel cell 3 is increased.
  • the flow control valve V3 is also gradually opened to supply the high temperature air of the high temperature side regenerative heat exchanger 2 to the fuel tank 4.
  • the controller 12 keeps the flow control valves V1, V2, V3 and V4 at a constant opening degree.
  • FIG. 6 is a block diagram of a regenerative heat exchanger used in a hybrid power generation system according to a fourth embodiment of the present invention.
  • the regenerative heat exchanger 2 is provided with a pipe 52G which extracts the air from the middle of the air side pipe, which is used as the supply air of the combustor 4 and the outlet air of the regenerative heat exchanger 2 by the pipe 52F.
  • a pipe 52G which extracts the air from the middle of the air side pipe, which is used as the supply air of the combustor 4 and the outlet air of the regenerative heat exchanger 2 by the pipe 52F.
  • the supply air of 3 air of different temperature can be supplied to each.
  • FIG. 7 is a configuration diagram of a regenerative heat exchanger used in a hybrid power generation system according to a fifth embodiment of the present invention.
  • the air side piping of the regenerative heat exchanger 2 is provided separately for the fuel cell piping 52F and the gas turbine piping 52G, so that air can be separately supplied to the fuel cell 3 and the combustor 4.
  • the regenerative heat exchanger 2 is configured.
  • the supply air of the fuel cell 3 on the side of the pipe 52F has a larger heat transfer area and heat recovery on the high temperature side, and supplies a higher temperature air than the supply air of the combustor 4 on the side of the pipe 52G. I am able to do it.
  • FIG. 8 is a configuration diagram of a regenerative heat exchanger used in a hybrid power generation system according to a sixth embodiment of the present invention.
  • the air side piping of the regenerative heat exchanger 2 is separately provided for the fuel cell and the gas turbine including the introduction position by the piping 51, and the supply air of the fuel cell 3 is obtained by the piping 52F.
  • the regenerative heat exchanger 2 is configured so that the supply air of the combustor 4 can be obtained by 52G and air can be separately supplied.
  • the air supplied from the fuel cell 3 in the pipe 52F recovers heat on the high temperature side, so that air higher in temperature than the air supplied from the combustor 4 in the pipe 52G can be supplied.
  • the high temperature side heat exchanger 2 and the low temperature side heat exchanger 10 of the embodiment shown in FIG. 1 With the regenerative heat exchanger 2 of the present embodiment, the same effect as the embodiment shown in FIG. However, at the time of cold start, it is necessary to adjust the flow rate of each part so that the heat recovery on the low temperature side can be efficiently performed by adjusting the flow rate of the bypass air 52B.
  • FIG. 9 is a block diagram of a regenerative heat exchanger used in a hybrid power generation system according to a seventh embodiment of the present invention.
  • the positions of the supply air of the fuel cell 3 of the pipe 52F of FIG. 9 and the supply air of the combustor 4 of the pipe 52G are interchanged and the HAT is introduced before the air for gas turbine is introduced into the regenerative heat exchanger 2.
  • the configuration is such that the feed water is sprayed and can be applied to the embodiment shown in FIG. 4, but since the air whose temperature has been lowered by blowing the HAT is introduced to the high temperature side of the regenerative heat exchanger 2, Heat recovery may be insufficient.
  • FIG. 10 is a configuration diagram of a regenerative heat exchanger used in a hybrid power generation system according to an eighth embodiment of the present invention.
  • the regenerative heat exchanger is constituted by a two-stage heat exchanger, and each is used for heating fuel cell supply air and for heating gas turbine supply air, and the regeneration of the embodiment shown in FIG.
  • the heat exchanger 2 is divided into two stages. Therefore, the present embodiment can obtain the same effect as the embodiment shown in FIG.
  • the spray position of the HAT water supply 42 can be made the same as that of the embodiment shown in FIG. 9, and in that case, the same effect as the embodiment shown in FIG. 9 can be obtained.
  • FIG. 11 is a system configuration diagram of a hybrid power generation system according to a ninth embodiment of the present invention.
  • the same reference numerals as in FIGS. 1 and 3 denote the same components.
  • the fuel supplied from the fuel cell 3 flowing through the pipe 52F is branched, and the fuel is discharged by the pipe 52S into the storage container containing the cell stack of the fuel cell 3.
  • the fuel cell is supplied as supply air in the cell storage container so that the fuel cell can be heated or cooled from the outside thereof.
  • fuel cell supply air supplied to raise the temperature of the fuel cell 3 can be passed through the inside and outside of the cell stack of the fuel cell 3 at the cold start of the hybrid power generation system. Since the heating of the cells can be promoted, the startup time of the hybrid power generation system can be shortened.
  • cooling can be similarly performed from both the inside and outside of the fuel cell stack, and the time required for the fuel cell cool down can be shortened.
  • Control device 40 Water spray supply water 41: WAC (Water Atomizing inlet air Cooling: water supply type intake air cooling) water supply 42: HAT (Humid Air Turbine: humidification turbine) water supply 43: Refrigerant 44: Exhaust cooler recovered water 45 ... water supply tank extraction water 50 ... intake air 51 ...

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Abstract

L'invention concerne un système de génération de puissance hybride capable de faire fonctionner efficacement une turbine à gaz tout en fournissant une température de fonctionnement et un débit d'oxydant adaptés à l'utilisation d'une pile à combustible. Le système de génération de puissance hybride comprend une pile à combustible (3) et une turbine à gaz (5). Un échangeur de chaleur augmente la température de l'air pressurisé par un compresseur en utilisant le gaz d'échappement de la turbine à gaz et il est composé d'un échangeur de chaleur du côté haute température (2) et d'un échangeur de chaleur du côté basse température (10). Un tuyau (52G) fournit à la turbine à gaz (5) l'air provenant du côté de l'orifice d'évacuation de l'échangeur de chaleur du côté basse température (10). Un tuyau (52F) à la pile à combustible (3) fournit l'air provenant du côté de l'orifice d'évacuation de l'échangeur de chaleur du côté haute température (2). Un dispositif de commande (12) réalise la commande, de telle manière qu'un clapet de commande de débit (V3) soit progressivement ouvert et passe d'un état totalement fermé au moment du démarrage à froid de la pile à combustible pour réduire le débit de l'air s'écoulant dans le tuyau (52G) et augmente la température de l'air fourni depuis l'échangeur de chaleur, s'écoulant dans le tuyau (52F).
PCT/JP2009/052094 2009-02-06 2009-02-06 Système de génération de puissance hybride WO2010089883A1 (fr)

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PCT/JP2009/052094 WO2010089883A1 (fr) 2009-02-06 2009-02-06 Système de génération de puissance hybride

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PCT/JP2009/052094 WO2010089883A1 (fr) 2009-02-06 2009-02-06 Système de génération de puissance hybride

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CN102088099A (zh) * 2010-12-16 2011-06-08 西安交通大学 一种固体氧化物燃料电池驱动的冷热电联供循环***
GB2494666A (en) * 2011-09-15 2013-03-20 Rolls Royce Fuel Cell Systems Ltd A solid oxide fuel cell system
JP2015111525A (ja) * 2013-12-06 2015-06-18 三菱日立パワーシステムズ株式会社 複合発電システムの制御装置及びそれを備えた複合発電システム並びに複合発電システムの制御方法
US9570766B2 (en) 2011-09-15 2017-02-14 Lg Fuel Cell Systems, Inc. Solid oxide fuel cell system
CN113710885A (zh) * 2019-05-31 2021-11-26 三菱动力株式会社 加压空气供给***及具备该加压空气供给***的燃料电池***、以及该加压空气供给***的起动方法
CN113982753A (zh) * 2021-11-03 2022-01-28 上海交通大学 一种将煤气化与sofc-hat集成一体的混合动力发电***
WO2023117185A1 (fr) * 2021-12-22 2023-06-29 Robert Bosch Gmbh Dispositif de pile à combustible

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JP2004119239A (ja) * 2002-09-27 2004-04-15 Mitsubishi Heavy Ind Ltd 燃料電池−ガスタービン発電設備及び複合発電設備
JP2004206896A (ja) * 2002-12-24 2004-07-22 Mitsubishi Heavy Ind Ltd 燃料電池−ガスタービン発電設備
JP2006147575A (ja) * 2004-11-18 2006-06-08 Siemens Power Generation Inc 復熱式大気圧ｓｏｆｃ／ガスタービンハイブリッドサイクル

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JP2004119239A (ja) * 2002-09-27 2004-04-15 Mitsubishi Heavy Ind Ltd 燃料電池−ガスタービン発電設備及び複合発電設備
JP2004206896A (ja) * 2002-12-24 2004-07-22 Mitsubishi Heavy Ind Ltd 燃料電池−ガスタービン発電設備
JP2006147575A (ja) * 2004-11-18 2006-06-08 Siemens Power Generation Inc 復熱式大気圧ｓｏｆｃ／ガスタービンハイブリッドサイクル

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102088099A (zh) * 2010-12-16 2011-06-08 西安交通大学 一种固体氧化物燃料电池驱动的冷热电联供循环***
GB2494666A (en) * 2011-09-15 2013-03-20 Rolls Royce Fuel Cell Systems Ltd A solid oxide fuel cell system
GB2494666B (en) * 2011-09-15 2014-11-05 Rolls Royce Fuel Cell Systems Ltd A solid oxide fuel cell system
US9570766B2 (en) 2011-09-15 2017-02-14 Lg Fuel Cell Systems, Inc. Solid oxide fuel cell system
US9666885B2 (en) 2011-09-15 2017-05-30 Lg Fuel Cell Systems, Inc. Solid oxide fuel cell system
JP2015111525A (ja) * 2013-12-06 2015-06-18 三菱日立パワーシステムズ株式会社 複合発電システムの制御装置及びそれを備えた複合発電システム並びに複合発電システムの制御方法
CN113710885A (zh) * 2019-05-31 2021-11-26 三菱动力株式会社 加压空气供给***及具备该加压空气供给***的燃料电池***、以及该加压空气供给***的起动方法
US20220223887A1 (en) * 2019-05-31 2022-07-14 Mitsubishi Power, Ltd. Pressurized air supply system, fuel cell system comprising the pressurized air supply system, and starting method of the pressurized air supply system
CN113982753A (zh) * 2021-11-03 2022-01-28 上海交通大学 一种将煤气化与sofc-hat集成一体的混合动力发电***
WO2023117185A1 (fr) * 2021-12-22 2023-06-29 Robert Bosch Gmbh Dispositif de pile à combustible

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