WO2014069414A1 - 発電システム及び発電システムの運転方法 - Google Patents
発電システム及び発電システムの運転方法 Download PDFInfo
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- WO2014069414A1 WO2014069414A1 PCT/JP2013/079161 JP2013079161W WO2014069414A1 WO 2014069414 A1 WO2014069414 A1 WO 2014069414A1 JP 2013079161 W JP2013079161 W JP 2013079161W WO 2014069414 A1 WO2014069414 A1 WO 2014069414A1
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- Prior art keywords
- fuel gas
- exhaust fuel
- supply line
- exhaust
- gas supply
- Prior art date
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- 238000010248 power generation Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title abstract description 11
- 239000002737 fuel gas Substances 0.000 claims abstract description 343
- 239000007789 gas Substances 0.000 claims abstract description 105
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 239000000446 fuel Substances 0.000 claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 abstract description 16
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 5
- 239000003949 liquefied natural gas Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- -1 coal Chemical compound 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K5/00—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type
- F01K5/02—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type used in regenerative installation
-
- 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
-
- 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
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
-
- 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
-
- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/224—Heating fuel before feeding to the burner
-
- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04111—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
-
- 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
- H01M8/04701—Temperature
- H01M8/04716—Temperature of fuel cell exhausts
-
- 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
- H01M8/04701—Temperature
- H01M8/04738—Temperature of auxiliary devices, e.g. reformer, compressor, burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/12—Kind or type gaseous, i.e. compressible
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
-
- 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 power generation system that combines a solid oxide fuel cell, a gas turbine, and a steam turbine, and a method for operating the power generation system.
- Solid oxide fuel cells Solid Oxide Fuel Cells: hereinafter referred to as SOFC
- SOFC Solid Oxide Fuel Cells
- this SOFC has a high operating temperature in order to increase the ionic conductivity, it can be used as air (oxidant) for supplying air discharged from the compressor of the gas turbine to the air electrode side.
- the SOFC can use high-temperature fuel that could not be used as fuel in the combustor of the gas turbine.
- Patent Document 1 various types of power generation systems that can achieve high-efficiency power generation have been proposed in which SOFCs, gas turbines, and steam turbines are combined.
- the combined system described in Patent Document 1 includes an SOFC, a gas turbine combustor that burns exhaust fuel gas and exhaust air discharged from the SOFC, and a compressor that compresses air and supplies the compressed fuel to the SOFC.
- a gas turbine is provided.
- the calorie of the exhaust fuel gas supplied from the SOFC to the gas turbine may fluctuate.
- fluctuations are likely to occur at the start of the supply of exhaust fuel gas from the SOFC to the gas turbine.
- combustion in the combustion chamber of the gas turbine becomes unstable, which is a problem.
- the present invention solves the above-described problems, and provides a power generation system and a method for operating the power generation system that can stabilize the exhaust fuel gas supplied from the fuel cell to the gas turbine and stabilize the combustion in the gas turbine.
- the purpose is to provide.
- a power generation system of the present invention includes a gas turbine having a compressor and a combustor, a fuel cell having an air electrode and a fuel electrode, and exhaust gas discharged from the fuel cell as the gas.
- An exhaust fuel gas supply line for supplying to the turbine, an open / close control valve that is provided in the exhaust fuel gas supply line and that switches between opening and closing, and the exhaust fuel gas supply line in a range upstream from the open / close control valve is heated.
- the exhaust fuel gas supply line is heated by the heating means, and the state of the exhaust fuel gas flowing through the exhaust fuel gas supply line detected by the detection section is predetermined. It is possible not to supply the exhaust gas to the gas turbine until the state is stabilized. Then, the exhaust fuel gas supply line that supplies the exhaust fuel gas to the gas turbine can be heated, so that the exhaust fuel gas in which the drain is generated can be suppressed from being directly supplied to the combustor of the gas turbine. Also, exhaust fuel gas whose calorie has been increased due to the generation of drain is supplied to the gas turbine, or the generated drain is evaporated and the H 2 O content is high, that is, the exhaust fuel gas with low calorie. Can be prevented from being supplied to the gas turbine. Thereby, the property of the exhaust fuel gas supplied to the gas turbine can be stabilized, and the combustion of the gas turbine can be stabilized.
- the detection unit is a calorimeter that detects calories of the exhaust fuel gas, and the control unit detects that the calories detected by the detection unit are within a predetermined range. In this case, it is determined that the heating of the exhaust fuel gas supply line is completed.
- exhaust gas with stable calories can be supplied to the gas turbine, and combustion of the gas turbine can be stabilized.
- the detection unit is a thermometer that detects the temperature of the exhaust fuel gas, and the control unit detects that the temperature detected by the detection unit is equal to or higher than a predetermined value. It is determined that the heating of the exhaust fuel gas supply line is completed.
- the supply of the exhaust fuel gas to the gas turbine can be started after detecting that the exhaust fuel gas flowing through the exhaust fuel gas supply line flows at a temperature at which no drain is generated. Thereby, exhaust fuel gas with stable calories can be supplied to the gas turbine, and combustion of the gas turbine can be stabilized.
- a fuel gas supply line that supplies fuel gas to the fuel cell, and one end of the exhaust fuel gas supply line upstream of the opening / closing control valve are connected, and the fuel gas supply A fuel gas recirculation line connected to the other end of the line and supplying a part of the exhaust fuel gas flowing through the exhaust fuel gas supply line to the fuel gas supply line, and the heating means,
- One end of the exhaust fuel gas supply line is connected downstream of the connection position with the fuel gas recirculation line and upstream of the open / close control valve, and the other end is connected to the fuel gas recirculation line.
- An exhaust fuel gas recirculation line connected to the exhaust fuel gas recirculation line, supplying the exhaust fuel gas flowing through the exhaust fuel gas supply line to the fuel gas recirculation line; By circulating the exhaust fuel gas flowing, characterized by heating the exhaust fuel gas supply line in the heat of the exhaust fuel gas.
- the exhaust fuel gas supply line can be heated by circulating the exhaust fuel gas. Therefore, it is not necessary to provide a separate heating source, and the exhaust fuel gas used for heating can be used effectively.
- the operation method of the power generation system of the present invention includes a gas turbine having a compressor and a combustor, a fuel cell having an air electrode and a fuel electrode, and supplying exhaust gas discharged from the fuel cell to the gas turbine.
- the step of detecting the state of the exhaust fuel gas in the exhaust fuel gas supply line the step of heating the exhaust fuel gas supply line based on the result detected by the detection unit, and the result detected by the detection unit And opening the open / close control valve when it is determined that the state of the exhaust fuel gas flowing through the exhaust fuel gas supply line is stable.
- the exhaust fuel gas supply line is heated, and the exhaust fuel is not supplied to the gas turbine until the detected state of the exhaust fuel gas flowing through the exhaust fuel gas supply line is stabilized in a predetermined state. it can. Then, the exhaust fuel gas supply line that supplies the exhaust fuel gas to the gas turbine can be heated, so that the exhaust fuel gas in which the drain is generated can be suppressed from being directly supplied to the combustor of the gas turbine. Also, exhaust fuel gas whose calorie has been increased due to the generation of drain is supplied to the gas turbine, or the generated drain is evaporated and the H 2 O content is high, that is, the exhaust fuel gas with low calorie. Can be prevented from being supplied to the gas turbine. Thereby, the calories of the exhaust fuel gas supplied to the gas turbine can be stabilized, and the combustion of the gas turbine can be stabilized.
- the exhaust fuel gas supply line for supplying the exhaust fuel gas to the gas turbine can be heated, so that the exhaust fuel gas generated by the drain is directly supplied to the combustor of the gas turbine. It can be suppressed. Also, exhaust fuel gas whose calorie has been increased due to the generation of drain is supplied to the gas turbine, or the generated drain is evaporated and the H 2 O content is high, that is, the exhaust fuel gas with low calorie. Can be prevented from being supplied to the gas turbine. Thereby, the calories of the exhaust fuel gas supplied to the gas turbine can be stabilized, and the combustion of the gas turbine can be stabilized.
- FIG. 1 is a schematic configuration diagram illustrating a power generation system according to the present embodiment.
- FIG. 2 is a schematic view of an exhaust fuel gas supply line in a power generation system according to an embodiment of the present invention.
- FIG. 3 is a flowchart illustrating an example of the driving operation of the power generation system according to the present embodiment.
- FIG. 4 is a time chart showing the timing of the operation of a valve that controls the flow of exhaust fuel in the power generation system of this embodiment.
- the power generation system of this embodiment is a triple combined cycle (registered trademark) in which a solid oxide fuel cell (hereinafter referred to as SOFC), a gas turbine, and a steam turbine are combined.
- SOFC solid oxide fuel cell
- gas turbine gas turbine
- steam turbine a steam turbine
- This triple combined cycle realizes extremely high power generation efficiency because electricity can be taken out in three stages of SOFC, gas turbine, and steam turbine by installing SOFC upstream of gas turbine combined cycle power generation (GTCC). can do.
- GTCC gas turbine combined cycle power generation
- a solid oxide fuel cell is applied as the fuel cell of the present invention, but the present invention is not limited to this type of fuel cell.
- FIG. 1 is a schematic configuration diagram showing a power generation system of the present embodiment.
- FIG. 2 is a schematic view of an exhaust fuel gas supply line in a power generation system according to an embodiment of the present invention.
- the power generation system 10 includes a gas turbine 11 and a generator 12, an SOFC 13, a steam turbine 14 and a generator 15.
- the power generation system 10 is configured to obtain high power generation efficiency by combining power generation by the gas turbine 11, power generation by the SOFC 13, and power generation by the steam turbine 14.
- the power generation system 10 includes a control device 62.
- the control device 62 controls the operation of each unit of the power generation system 10 based on the input setting, the input instruction, the result detected by the detection unit, and the like.
- the gas turbine 11 includes a compressor 21, a combustor 22, and a turbine 23, and the compressor 21 and the turbine 23 are coupled to each other by a rotary shaft 24 so as to be integrally rotatable.
- the compressor 21 compresses the air A taken in from the air intake line 25.
- the combustor 22 mixes and combusts the compressed air A ⁇ b> 1 supplied from the compressor 21 through the first compressed air supply line 26 and the fuel gas L ⁇ b> 1 supplied from the first fuel gas supply line 27.
- the turbine 23 is rotated by exhaust gas (combustion gas) G supplied from the combustor 22 through the exhaust gas supply line 28.
- the turbine 23 is supplied with compressed air A1 compressed by the compressor 21 through the passenger compartment, and cools the blades and the like using the compressed air A1 as cooling air.
- the generator 12 is provided on the same axis as the turbine 23 and can generate electric power when the turbine 23 rotates.
- liquefied natural gas LNG is used as the fuel gas L1 supplied to the combustor 22.
- the SOFC 13 generates power by reacting at a predetermined operating temperature by being supplied with high-temperature fuel gas as a reducing agent and high-temperature air (oxidizing gas) as an oxidant.
- the SOFC 13 is configured by accommodating an air electrode, a solid electrolyte, and a fuel electrode in a pressure vessel. A part of the compressed air A2 compressed by the compressor 21 is supplied to the air electrode, and fuel gas is supplied to the fuel electrode to generate power.
- the fuel gas L2 supplied to the SOFC 13 for example, liquefied natural gas (LNG), hydrogen (H 2 ), carbon monoxide (CO), hydrocarbon gas such as methane (CH 4 ), carbon such as coal, etc. Gas produced by gasification equipment for quality raw materials is used.
- the oxidizing gas supplied to the SOFC 13 is a gas containing approximately 15% to 30% oxygen, and typically air is preferable. However, in addition to air, a mixed gas of combustion exhaust gas and air, oxygen And the like can be used (hereinafter, the oxidizing gas supplied to the SOFC 13 is referred to as air).
- the SOFC 13 is connected to the second compressed air supply line 31 branched from the first compressed air supply line 26, and can supply a part of the compressed air A2 compressed by the compressor 21 to the introduction portion of the air electrode.
- a control valve 32 capable of adjusting the amount of air to be supplied and a blower (a booster) 33 capable of increasing the pressure of the compressed air A2 are provided along the air flow direction.
- the control valve 32 is provided on the upstream side of the second compressed air supply line 31 in the air flow direction, and the blower 33 is provided on the downstream side of the control valve 32.
- the SOFC 13 is connected to an exhaust air line 34 that exhausts exhaust air A3 used at the air electrode.
- the exhaust air line 34 is branched into an exhaust line 35 for exhausting the exhaust air A3 used at the air electrode to the outside, and a compressed air circulation line 36 connected to the combustor 22.
- the discharge line 35 is provided with a control valve 37 capable of adjusting the amount of air discharged
- the compressed air circulation line 36 is provided with a control valve 38 capable of adjusting the amount of air circulated.
- the SOFC 13 is provided with a second fuel gas supply line 41 for supplying the fuel gas L2 to the introduction portion of the fuel electrode.
- the second fuel gas supply line 41 is provided with a control valve 42 that can adjust the amount of fuel gas to be supplied.
- the SOFC 13 is connected to an exhaust fuel line 43 that exhausts the exhaust fuel gas L3 used at the fuel electrode.
- the exhaust fuel line 43 is branched into an exhaust line 44 that discharges to the outside and an exhaust fuel gas supply line 45 that is connected to the combustor 22.
- the discharge line 44 is provided with a control valve 46 capable of adjusting the amount of fuel gas to be discharged.
- the exhaust fuel gas supply line 45 is provided with a control valve 47 capable of adjusting the amount of fuel gas to be supplied, and a blower 48 capable of boosting fuel. Is provided along the flow direction of the fuel gas L3.
- the control valve 47 is provided on the upstream side in the flow direction of the exhaust fuel gas L 3 in the exhaust fuel gas supply line 45, and the blower 48 is provided on the downstream side of the control valve 47.
- the SOFC 13 is provided with a fuel gas recirculation line 49 that connects the exhaust fuel line 43 and the second fuel gas supply line 41.
- the fuel gas recirculation line 49 is provided with a recirculation blower 50 that recirculates the exhaust fuel gas L3 of the exhaust fuel line 43 to the second fuel gas supply line 41.
- the steam turbine 14 rotates the turbine 52 with the steam generated by the exhaust heat recovery boiler (HRSG) 51.
- the exhaust heat recovery boiler 51 is connected to an exhaust gas line 53 from the gas turbine 11 (the turbine 23), and generates steam S by exchanging heat between the air and the high temperature exhaust gas G.
- the steam turbine 14 (turbine 52) is provided with a steam supply line 54 and a water supply line 55 between the exhaust heat recovery boiler 51.
- the water supply line 55 is provided with a condenser 56 and a water supply pump 57.
- the generator 15 is provided coaxially with the turbine 52 and can generate electric power when the turbine 52 rotates.
- the exhaust gas G from which heat has been recovered by the exhaust heat recovery boiler 51 is released to the atmosphere after removing harmful substances.
- the operation of the power generation system 10 of the present embodiment will be described.
- the electric power generation system 10 starts in order of the gas turbine 11, the steam turbine 14, and SOFC13.
- the compressor 21 compresses the air A
- the combustor 22 mixes and burns the compressed air A1 and the fuel gas L1
- the turbine 23 is rotated by the exhaust gas G. 12 starts power generation.
- the turbine 52 is rotated by the steam S generated by the exhaust heat recovery boiler 51, whereby the generator 15 starts power generation.
- the compressed air A ⁇ b> 2 is supplied to start pressure increase and heating is started.
- the control valve 37 of the discharge line 35 and the control valve 38 of the compressed air circulation line 36 closed and the blower 33 of the second compressed air supply line 31 stopped, the control valve 32 is opened by a predetermined opening.
- a part of the compressed air A2 compressed by the compressor 21 is supplied from the second compressed air supply line 31 to the SOFC 13 side.
- the pressure on the SOFC 13 side increases as the compressed air A2 is supplied.
- the fuel gas L2 is supplied to the fuel electrode side and pressure increase is started.
- the control valve 46 of the exhaust line 44 and the control valve 47 of the exhaust fuel gas supply line 45 closed and the blower 48 stopped, the control valve 42 of the second fuel gas supply line 41 is opened and the fuel gas is recirculated.
- the recirculation blower 50 of the line 49 is driven.
- the fuel gas L2 is supplied from the second fuel gas supply line 41 to the SOFC 13 side, and the exhaust fuel gas L3 is recirculated by the fuel gas recirculation line 49.
- the pressure on the SOFC 13 side is increased by supplying the fuel gas L2.
- the control valve 32 When the pressure on the air electrode side of the SOFC 13 becomes the outlet pressure of the compressor 21, the control valve 32 is fully opened and the blower 33 is driven. At the same time, the control valve 37 is opened and the exhaust air A3 from the SOFC 13 is exhausted from the exhaust line 35. Then, the compressed air A2 is supplied to the SOFC 13 side by the blower 33. At the same time, the control valve 46 is opened, and the exhaust fuel gas L3 from the SOFC 13 is discharged from the discharge line 44. When the pressure on the air electrode side and the pressure on the fuel electrode side in the SOFC 13 reach the target pressure, the pressure increase of the SOFC 13 is completed.
- the control valve 37 is closed and the control valve 38 is opened.
- the exhaust air A3 from the SOFC 13 is supplied to the combustor 22 from the compressed air circulation line 36.
- the control valve 46 is closed, while the control valve 47 is opened to drive the blower 48.
- the exhaust fuel gas L3 from the SOFC 13 is supplied from the exhaust fuel gas supply line 45 to the combustor 22.
- the fuel gas L1 supplied from the first fuel gas supply line 27 to the combustor 22 is reduced.
- the power generation by the generator 12 by driving the gas turbine 11, the power generation by the SOFC 13, and the power generation by the generator 15 are all performed by driving the steam turbine 14, and the power generation system 10 becomes a steady operation.
- the exhaust fuel gas L3 from the SOFC 13 is supplied from the exhaust fuel gas supply line 45 to the combustor 22.
- the temperature of the exhaust fuel gas supply line 45 is low, the temperature of the exhaust fuel gas L3 supplied toward the gas turbine 11 in the exhaust fuel gas supply line 45 decreases.
- the combustion heat value (calories) of the exhaust fuel gas L3 may fluctuate.
- An opening / closing valve (opening / closing control valve) 106 disposed near the gas turbine 11 of the supply line 45 (in the present embodiment, downstream of the control valve 47) is provided.
- the control device (control unit) 62 of the power generation system 10 performs heating based on the result of the detection unit 104 at the start of supply of the exhaust fuel gas L3 to the exhaust fuel gas supply line 45, that is, after opening the control valve 47.
- the means 102 and the on-off valve 106 are driven.
- the heating unit 102 for heating the exhaust fuel gas supply line 45 is provided, and the heating of the heating unit 102 is controlled based on the detection result of the detection unit 104. Further, by controlling the opening and closing of the on-off valve 106 based on the detection result of the detection unit 104, the execution and stop of the supply of the exhaust fuel gas L3 to the gas turbine 11 (combustor 22) are controlled. Then, the exhaust fuel gas supply line 45 can be heated, and the exhaust fuel gas L3 that has passed through the exhaust fuel gas supply line 45 after heating the exhaust fuel gas supply line 45 can be supplied to the gas turbine 11. Thereby, combustion calorific value (calorie) of exhaust fuel gas L3 supplied to gas turbine 11 (combustor 22) can be stabilized.
- the heating means 102 includes an exhaust fuel gas recirculation line 112 and a control valve 116.
- the exhaust fuel gas recirculation line 112 has one end connected between the blower 48 of the exhaust fuel gas supply line 45 and the combustor 22, and the other end connected to the fuel gas recirculation line 49. .
- the exhaust fuel gas recirculation line 112 supplies the exhaust fuel gas L3 supplied from the exhaust fuel gas supply line 45 to the fuel gas recirculation line 49.
- the control valve 116 is installed in the exhaust fuel gas recirculation line 112.
- the control valve 116 switches between opening and closing to switch whether or not the exhaust fuel gas L3 flows into the exhaust fuel gas recirculation line 112, and adjusting the opening degree to control the exhaust gas flowing through the exhaust fuel gas recirculation line 112.
- the flow rate of the fuel gas L3 is controlled.
- the detection unit 104 is disposed downstream of the blower 48 of the exhaust fuel gas supply line 45 and upstream of the position connected to the exhaust fuel gas recirculation line 112.
- the detection unit 104 is a detection device that detects the calories of the exhaust fuel gas flowing through the exhaust fuel gas supply line 45 at the installed position.
- the detection unit 104 may be any detection device that can detect the state of the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 at the installed position. For example, temperature detection for detecting the temperature of the exhaust fuel gas L3 is possible. An apparatus can also be used.
- the state of the exhaust fuel gas L3 is various conditions that can determine whether drain has occurred in the exhaust fuel gas L3 while flowing through the exhaust fuel gas supply line 45.
- the detection unit 104 is preferably arranged on the gas turbine 11 side of the exhaust fuel gas supply line 45, that is, on the side close to the position connected to the exhaust fuel gas recirculation line 112. Thereby, by flowing through the exhaust fuel gas supply line 45, a change occurring in the exhaust fuel gas L3 can be detected with a higher probability.
- the on-off valve 106 is disposed downstream of the position connected to the exhaust fuel gas recirculation line 112 and upstream of the combustor 22.
- the on-off valve 106 can switch whether to supply the exhaust fuel gas L3 to the combustor 22 by switching between opening and closing.
- the control device 62 can adjust at least the opening and closing of the on-off valve 106. Therefore, the control device 62 can switch whether or not to supply the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 to the gas turbine 11. Further, the control device 62 of the present embodiment can adjust the opening and closing and the opening degree of the control valves 46, 47 and 116. Therefore, the control device 62 can switch the flow of the exhaust fuel gas L3 flowing through the exhaust fuel line 43, that is, the device that supplies the exhaust fuel.
- FIG. 3 is a flowchart illustrating an example of the driving operation of the power generation system according to the present embodiment.
- FIG. 4 is a time chart showing the timing of the operation of a valve that controls the flow of exhaust fuel in the power generation system of this embodiment.
- the driving operation shown in FIG. 3 can be realized by the control device (control unit) 62 executing arithmetic processing based on the detection result of each unit.
- the power generation system 10 executes the exhaust fuel gas circulation in parallel using the fuel gas recirculation line 49 even during the execution of the processing shown in FIG.
- the control device 62 discharges the exhaust fuel gas L3 from the exhaust line 44 (step S14). Specifically, as shown at time t1 in FIG. 4, the control device 62 opens the control valve 46, closes the control valve 47, closes the control valve 116, and closes the on-off valve 106. As a result, the exhaust fuel gas L3 flows in the direction of the arrow 132 shown in FIG.
- the control device 62 determines whether or not the state of the exhaust fuel gas L3 is stable (step S16). That is, the control device 62 determines whether the component of the exhaust fuel gas L3 flowing through the exhaust fuel line 43 is stable. For example, the control device 62 performs a composition analysis of the exhaust fuel gas L3 and makes a determination based on the result.
- step S16 When it is determined that the state of the exhaust fuel gas L3 is not stable (No in step S16), the control device 62 returns to step S16 and executes the determination in step S16 again.
- the control device 62 repeats the process of step S16 while discharging the exhaust fuel gas L3 from the discharge line 44 until the state of the exhaust fuel gas L3 flowing through the exhaust fuel line 43 is stabilized.
- step S16 When it is determined that the state of the exhaust fuel gas L3 is stable (Yes in step S16), the control device 62 starts supplying the exhaust fuel gas L3 to the exhaust fuel gas supply line 45 (step S18). Recirculation of the exhaust fuel gas L3 in the exhaust fuel gas supply line 45 using the recirculation line 112 is started (step S20). Specifically, as shown at time t2 in FIG. 4, the control device 62 reduces the opening of the control valve 46 and opens the control valve 47 from closed. Thereby, the exhaust fuel gas L3 flowing through the exhaust fuel line 43 can be supplied to the exhaust fuel gas supply line 45. Further, the control device 62 changes the control valve 116 from closed to open and keeps the on-off valve 106 closed.
- the control device 62 drives the blower 48.
- the blower 48 sends the exhaust fuel gas L ⁇ b> 3 flowing through the exhaust fuel gas supply line 45 toward the connection portion with the exhaust fuel gas recirculation line 112.
- the on-off valve 106 is closed and the control valve 116 is opened, the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 reaches the connecting portion with the exhaust fuel gas recirculation line 112, and the exhaust fuel gas L3 is exhausted. It flows to the gas recirculation line 112.
- the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 flows in the direction of the arrow 134 shown in FIG.
- the control device 62 circulates the exhaust fuel gas in the order of the exhaust fuel gas supply line 45, the exhaust fuel gas recirculation line 112, the fuel gas recirculation line 49, and the SOFC 13, thereby supplying the exhaust fuel gas with the exhaust fuel gas L3.
- Line 45 can be heated.
- the exhaust fuel gas L3 used for heating is charged into the SOFC 13 so that it can be heated again.
- the control device 62 determines whether the heating of the exhaust fuel gas supply line 45 is completed (Step S22). The control device 62 determines whether the heating of the exhaust fuel gas supply line 45 is completed based on the detection result of the detection unit 104. Based on the state of the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 detected by the detection unit 104, the control device 62 determines whether the heating of the exhaust fuel gas supply line 45 by the heating means 102 has been completed. Specifically, the detection unit 104 can measure the calorie and temperature of the exhaust fuel gas L3 as the state of the exhaust fuel gas L3.
- the control device 62 determines that no drain is found in the exhaust fuel gas L3 flowing through the exhaust fuel gas supply line 45 based on the state of the exhaust fuel gas L3, the heating of the exhaust fuel gas supply line 45 is completed. Is determined.
- the detection unit 104 detects the temperature
- the control device 62 determines that the heating is completed when the temperature becomes a certain value or more.
- the control device 62 determines that the heating is completed when the calorie falls within a predetermined range.
- Step S22 When the controller 62 determines that the heating has not been completed (No in Step S22), the controller 62 returns to Step S22 and performs the determination in Step S22 again.
- the control device 62 uses the exhaust fuel gas recirculation line 112 until the heating of the exhaust fuel gas supply line 45 is completed, that is, until the state of the exhaust fuel gas L3 detected by the detection unit 104 is stabilized.
- the process of step S22 is repeated while continuing the recirculation of L3. Accordingly, the control device 62 can heat the exhaust fuel gas supply line 45 in a state where the exhaust fuel gas L3 is not supplied from the exhaust fuel gas supply line 45 to the gas turbine 11.
- the control device 62 adjusts the opening degree of the control valve 46 based on the state of the exhaust fuel gas L3 (for example, the temperature of the exhaust fuel gas detected by the detection unit 104). To do. Specifically, when the exhaust fuel gas L3 flows into the exhaust fuel gas supply line 45 and the pressure of the exhaust fuel gas supply line 45 increases, the opening degree of the control valve 46 is increased. As a result, surplus exhaust fuel gas L3 out of exhaust fuel gas L3 supplied from exhaust fuel line 43 can be exhausted from exhaust line 44.
- step S22 When it is determined that the heating has been completed (Yes in step S22), the control device 62 stops the recirculation of the exhaust fuel gas L3 using the exhaust fuel gas recirculation line 112, and the exhaust fuel gas L3 to the gas turbine 11 is stopped. Is started (step S24). Specifically, as shown at time t3 in FIG. 4, the control device 62 switches the control valve 46 from open to closed, maintains the control valve 47 open, changes the control valve 116 from open to closed, and opens and closes. The valve 106 is changed from closed to open.
- the power generation system 10 of the present embodiment uses the heating unit 102 to heat the exhaust fuel gas supply line 45, and after the heating of the exhaust fuel gas supply line 45 is completed, the exhaust fuel to the gas turbine 11 is recovered. Supply of gas L3 is started. Accordingly, it is possible to suppress the exhaust fuel gas L3 having a lowered temperature from flowing through the exhaust fuel gas supply line 45 in a low temperature (normal temperature) state at the start of operation or the like and being supplied to the gas turbine 11.
- the exhaust fuel gas L3 when the exhaust fuel gas L3 is cooled, drainage is generated.
- the composition of the components changes, and the amount of moisture decreases, so that the combustion calorific value (calories) increases.
- the amount of drain generation gradually changes. Thereafter, when the drain generated in the exhaust fuel gas supply line 45 evaporates, the evaporated drain enters the exhaust fuel gas L3, and the H 2 O content of the exhaust fuel gas L3 increases.
- the exhausted fuel gas L3 has a lower calorific value as the amount of H 2 O increases.
- the fuel heat generation amount of the exhaust fuel gas L3 on the downstream side of the exhaust fuel gas supply line 45 gradually changes.
- the combustion control in the gas turbine 11 becomes complicated.
- the power generation system 10 of the present embodiment starts supplying the exhaust fuel gas L3 to the gas turbine 11 after the heating of the exhaust fuel gas supply line 45 is completed. Thereby, the fluctuation
- the power generation system 10 of the present embodiment has a configuration in which the exhaust fuel gas recirculation line 112 is provided as the heating means 102 to recirculate the exhaust fuel gas L3.
- the exhaust fuel gas L3 is provided as the heating means 102 to recirculate the exhaust fuel gas L3.
- the power generation system 10 is provided with the exhaust fuel gas recirculation line 112 and returns the exhaust fuel gas L3 to the SOFC 13 again, thereby reheating the exhaust fuel gas L3 and finishing the heating of the exhaust fuel gas recirculation line 112. Thereafter, the gas turbine 11 can be supplied. Thereby, the exhaust fuel gas L3 can be used efficiently.
- the power generation system 10 connects the exhaust fuel gas recirculation line 112 to the downstream side of the blower 48 of the exhaust fuel gas supply line 45 to drive the exhaust fuel gas L3 to the exhaust fuel gas recirculation line 112.
- a blower 48 can be used as a source. Thereby, one blower 48 can be used effectively.
- the on-off valve 106 is preferably disposed in the vicinity of the gas turbine 11 (combustor 22) of the exhaust fuel gas supply line 45. That is, the power generation system 10 preferably shortens the distance between the on-off valve 106 and the combustor 22. Thereby, when the on-off valve 106 is opened and the supply of the exhaust fuel gas L3 to the gas turbine 11 is started, the range of the exhaust fuel gas supply line 45 heated by the exhaust fuel gas L3 supplied to the gas turbine 11 is shortened. can do. Accordingly, when the supply of the exhaust fuel gas L3 to the gas turbine 11 is started, the generation of drain in the exhaust fuel gas L3 of the exhaust fuel gas supply line 45 in the range downstream of the on-off valve 106 is suppressed. be able to.
- the power generation system 10 of the present embodiment is provided with the control valve 47 upstream of the blower 48 and the detector 104 of the exhaust fuel gas supply line 45, so that the blower 48 and the detector 104 of the exhaust fuel gas supply line 45 are provided. It is possible to switch whether or not to supply the exhausted fuel gas L3 to the range in which is disposed.
- the position of the control valve 47 is the position where the control valve 47 is disposed on the combustor 22 side of the exhaust fuel gas supply line 45, but the disposition position is not particularly limited, and the downstream side of the connecting portion with the exhaust line 44 And what is necessary is just to be upstream from the connection part with the exhaust fuel gas recirculation line 112. Note that the power generation system 10 is not necessarily provided with the control valve 47.
- the power generation system 10 may use another heating method as a heating means.
- the exhaust fuel gas recirculation line 112 may be heated using steam discharged from other equipment, for example, steam generated in the exhaust heat recovery boiler (HRSG) 51, or the exhaust fuel gas recirculation line 112.
- the exhaust fuel gas recirculation line 112 may be heated by winding a heating wire or the like and causing electricity to flow through the heating wire to generate heat.
- the on-off valve 106 only needs to be able to switch between opening and closing, but may be a control valve that adjusts the opening degree.
- the control valve 47 may be a control valve as long as it can be switched at least between opening and closing.
- at least one of the control valve 47 and the on-off valve 106 provided in the exhaust fuel gas supply line 45 is preferably a control valve whose opening degree (flow path resistance) can be adjusted. Thereby, the quantity of the exhaust fuel gas L3 supplied to the combustor 22 can be adjusted.
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Abstract
Description
11 ガスタービン
12 発電機
13 固体酸化物形燃料電池(SOFC)
14 蒸気タービン
15 発電機
21 圧縮機
22 燃焼器
23 タービン
26 第1圧縮空気供給ライン
27 第1燃料ガス供給ライン
31 第2圧縮空気供給ライン
32 制御弁(第1開閉弁)
33、48 ブロワ
34 排空気ライン
36 圧縮空気循環ライン
41 第2燃料ガス供給ライン
42 制御弁
43 排燃料ライン
45 排燃料ガス供給ライン
47 制御弁
49 燃料ガス再循環ライン
62 制御装置(制御部)
102 加熱手段
104 検出部
106 開閉弁
112 排燃料ガス再循環ライン
116 制御弁
Claims (5)
- 圧縮機と燃焼器を有するガスタービンと、
空気極及び燃料極を有する燃料電池と、
前記燃料電池から排出される排燃料ガスを前記ガスタービンに供給する排燃料ガス供給ラインと、
前記排燃料ガス供給ラインに設けられ、少なくとも開閉を切り換える開閉制御弁と、
前記開閉制御弁よりも上流側の範囲の前記排燃料ガス供給ラインを加熱する加熱手段と、
前記開閉制御弁よりも上流側の範囲の前記排燃料ガス供給ラインの前記排燃料ガスの状態を検出する検出部と、
前記検出部で検出した結果に基づいて、前記加熱手段による前記排燃料ガス供給ラインの加熱を制御し、前記検出部で検出した結果に基づいて、前記排燃料ガス供給ラインの加熱が完了したと判定した場合、前記開閉制御弁を開とする制御部と、を有することを特徴とする発電システム。 - 前記検出部は、前記排燃料ガスのカロリーを検出する熱量計であり、
前記制御部は、前記検出部で検出した前記カロリーが所定の範囲内であることを検出した場合、前記排燃料ガス供給ラインの加熱が完了したと判定することを特徴とする請求項1に記載の発電システム。 - 前記検出部は、前記排燃料ガスの温度を検出する温度計であり、
前記制御部は、前記検出部で検出した前記温度が所定値以上であることを検出した場合、前記排燃料ガス供給ラインの加熱が完了したと判定することを特徴とする請求項1に記載の発電システム。 - 前記燃料電池に燃料ガスを供給する燃料ガス供給ラインと、
前記排燃料ガス供給ラインの前記開閉制御弁よりも上流側に一方の端部が連結され、前記燃料ガス供給ラインに他方の端部が連結され、前記排燃料ガス供給ラインを流れる前記排燃料ガスの一部を前記燃料ガス供給ラインに供給する燃料ガス再循環ラインと、を有し、
前記加熱手段は、前記排燃料ガス供給ラインの前記燃料ガス再循環ラインとの連結位置より下流側かつ前記開閉制御弁よりも上流側に一方の端部が連結され、前記燃料ガス再循環ラインに他方の端部が接続された排燃料ガス再循環ラインを備え、前記排燃料ガス再循環ラインで前記排燃料ガス供給ラインを流れる前記排燃料ガスを前記燃料ガス再循環ラインに供給し、前記排燃料ガス供給ラインを流れる前記排燃料ガスを循環させ、前記排燃料ガスの熱で前記排燃料ガス供給ラインを加熱することを特徴とする請求項1から3のいずれか一項に記載の発電システム。 - 圧縮機と燃焼器を有するガスタービンと、空気極及び燃料極を有する燃料電池と、前記燃料電池から排出される排燃料ガスを前記ガスタービンに供給する排燃料ガス供給ラインと、前記排燃料ガス供給ラインに設けられ、少なくとも開閉を切り換える開閉制御弁と、を有する発電システムの運転方法であって、
前記開閉制御弁よりも上流側の範囲の前記排燃料ガス供給ラインの前記排燃料ガスの状態を検出する工程と、
前記検出部で検出した結果に基づいて、前記排燃料ガス供給ラインを加熱する工程と、
前記検出部で検出した結果に基づいて、前記排燃料ガス供給ラインを流れる前記排燃料ガスの状態が安定したと判定した場合、前記開閉制御弁を開とする工程と、を有することを特徴とする発電システムの運転方法。
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KR1020157008073A KR101701654B1 (ko) | 2012-10-31 | 2013-10-28 | 발전 시스템 및 발전 시스템의 운전 방법 |
DE112013005214.8T DE112013005214B4 (de) | 2012-10-31 | 2013-10-28 | Energieerzeugungssystem und Betriebsverfahren eines Energieerzeugungssystems |
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JP2004220941A (ja) * | 2003-01-15 | 2004-08-05 | Tokyo Electric Power Co Inc:The | 燃料電池コンバインドサイクル発電プラントおよびその起動方法 |
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CN104685688B (zh) | 2017-02-15 |
US20150260097A1 (en) | 2015-09-17 |
KR20150052165A (ko) | 2015-05-13 |
DE112013005214T5 (de) | 2015-09-24 |
JP2014093126A (ja) | 2014-05-19 |
DE112013005214B4 (de) | 2021-10-28 |
KR101701654B1 (ko) | 2017-02-01 |
JP6071430B2 (ja) | 2017-02-01 |
US9926844B2 (en) | 2018-03-27 |
CN104685688A (zh) | 2015-06-03 |
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