WO2020181677A1 - 一种太阳能燃煤耦合灵活发电***及运行方法 - Google Patents
一种太阳能燃煤耦合灵活发电***及运行方法 Download PDFInfo
- Publication number
- WO2020181677A1 WO2020181677A1 PCT/CN2019/092429 CN2019092429W WO2020181677A1 WO 2020181677 A1 WO2020181677 A1 WO 2020181677A1 CN 2019092429 W CN2019092429 W CN 2019092429W WO 2020181677 A1 WO2020181677 A1 WO 2020181677A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat storage
- storage medium
- inlet
- pressure heater
- outlet
- Prior art date
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title abstract description 6
- 238000005338 heat storage Methods 0.000 claims abstract description 242
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract 2
- 230000001105 regulatory effect Effects 0.000 claims description 98
- 238000000605 extraction Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 4
- 230000000295 complement effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
- F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- 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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/12—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having two or more accumulators
-
- 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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- 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
- Y02E20/14—Combined heat and power generation [CHP]
Definitions
- the invention relates to the technical field of multi-energy complementary power generation, in particular to a solar coal-fired coupling flexible power generation system and an operation method.
- the coupling of the existing solar thermal power generation system and the coal-fired thermal system is not enough to quickly offset the output power disturbance caused by the change of solar radiation intensity, and the strong coupling between the boiler and the steam turbine limits the minimum output of the generator set, and there is no reasonable solution yet.
- the solution enables solar thermal power generation and coal-fired generating units to meet the power grid's requirements for variable load operation performance and economy of the units.
- the purpose of the present invention is to provide a solar coal-fired coupled flexible power generation system and operation method, which realizes the coupling of solar thermal power generation and coal-fired power generation, increases the external active heat storage of the unit, and uses the storage
- the high-temperature heat storage of the heating medium quickly offsets the output power disturbance caused by the change of solar radiation intensity and realizes the decoupling of the generator and the furnace, so that the solar coal-fired coupled generator set can meet the requirements of the power grid for the variable load performance of the unit, while reducing coal consumption and improving economy Sex.
- a solar coal-fired coupling flexible power generation system including a coal-fired generating set thermal system and a high-temperature heat storage system coupled with solar thermal power generation: wherein,
- the thermal system of the coal-fired generator set includes a boiler 1, a high pressure cylinder of a steam turbine 2, a low pressure cylinder of a steam turbine 3, a condenser 4, a condensate pump 5, a low pressure heater 6, a deaerator 7, a feed water pump 8, a high pressure
- the heater and regulating valve group 9; the heat storage medium heater 10 is also arranged in the flue of the boiler 1; the superheated steam outlet of the boiler 1 is connected with the inlet of the high pressure cylinder 2 of the steam turbine; the feed water inlet and the high pressure heater of the boiler 1 Connected with the feedwater outlet of the regulating valve group 9; the steam outlet of the high-pressure cylinder 2 of the steam turbine communicates with the inlet of the low-pressure cylinder 3 of the steam turbine through the boiler 1; the first-stage extraction steam outlet of the low-pressure cylinder 3 of the steam turbine is connected to the high-pressure heater
- the steam inlet of the regulating valve group 9 is connected by a pipe, the second-
- the high-temperature heat storage system coupled with solar thermal power generation includes a solar heat collection device 11, a heat storage medium pump 12, a cold and heat storage medium tank 13, a cold and heat storage medium tank connection valve 14, and a heat storage medium tank 15 that are connected in sequence.
- Heat storage medium tank outlet regulating valve 17 and heat storage medium and feed water heat exchanger 16 also including solar heat storage medium regulating valve 18; the entrance of solar heat collection device 11 through solar heat storage medium regulating valve 18 and heat storage medium
- the pump 12 is connected to the cold and heat storage medium outlet of the cold and heat storage medium tank 13; the cold and heat storage medium outlet of the cold and heat storage medium tank 13 is also connected through the heat storage medium pump 12 and the inlet of the heat storage medium heater 10; solar energy
- the outlet of the heat collection device 11 is connected with the right inlet of the heat storage medium of the heat storage medium tank 15 through a pipe; the outlet of the heat storage medium heater 10 is connected with the left inlet of the heat storage medium of the heat storage medium tank 15 through a pipe
- the high-pressure heater and regulating valve group 9 is arranged with a first-stage high-pressure heater 901, a second-stage high-pressure heater 902, and a third-stage high-pressure heater 903, and also includes a first-stage high-pressure heater inlet regulating valve 904 and a second-stage high-pressure heater inlet Regulating valve 905, three-stage high-pressure heater inlet regulating valve 906, and three-stage high-pressure heater outlet regulating valve 907;
- the feed water outlet of the three-stage high pressure heater 903 is the feed water outlet of the high-pressure heater and regulating valve group 9;
- the feedwater inlet of the device 901 is the feedwater inlet of the high-pressure heater and the regulating valve group 9, the feedwater outlet of the primary high-pressure heater 901 and the feedwater inlet of the secondary high-pressure heater 902 are connected by pipelines; the feedwater of the secondary high-pressure heater 902 The outlet is connected to the feedwater inlet of the three-stage high-pressure heater 903 through a pipeline; the steam
- the heat storage medium communicates with the feedwater inlet of the feedwater heat exchanger 16 and the feedwater inlet of the primary high pressure heater 901 through the primary high pressure heater inlet regulating valve 904, and also communicates with the feedwater inlet of the secondary high pressure heater 902 through two
- the inlet regulating valve 905 of the three-stage high-pressure heater is connected, and the feedwater inlet of the three-stage high-pressure heater 903 is connected through the three-stage high-pressure heater inlet regulating valve 906, and the feedwater outlet of the three-stage high-pressure heater 903 is connected through a three-stage high pressure.
- the heater outlet regulating valve 907 is connected; the heat storage medium and the feedwater outlet of the feedwater heat exchanger 16 and the feedwater outlet of the three-stage high pressure heater 903 are also connected.
- the heat storage medium used in the high-temperature heat storage system coupled with solar thermal power generation is a single-phase flow medium such as molten salt and heat-conducting oil.
- the temperature of the flue gas at the flue of the boiler 1 where the heat storage medium heater 10 is located is between 550°C and 700°C.
- the above-mentioned operation method of the solar coal-fired coupled flexible power generation system maintains the stability of the output power of the steam turbine when the solar radiation conditions change, and the working conditions of the heat storage medium and the feedwater heat exchanger 16 need to be maintained, that is, the heat storage medium is maintained
- the heat storage medium flow rate, feed water flow rate and feed water temperature of the feed water heat exchanger 16 are unchanged.
- One or more of the opening pairs of the two-stage high-pressure heater inlet regulating valve 905, the three-stage high-pressure heater inlet regulating valve 906, and the three-stage high-pressure heater outlet regulating valve 907 enter the heat storage medium and feedwater heat exchanger 16 Adjust the feed water flow and temperature.
- the adjustment goal is to increase the feed water temperature and make the rate of change between the main steam flow from boiler 1 into the high pressure cylinder 2 of the turbine and the reheat steam flow into the low pressure cylinder 3 of the turbine to meet the turbine electrical load
- the rate of change enables the system to meet the requirements of rapid variable load rate; when the generator set needs to reduce the load, close the first-stage high-pressure heater inlet regulating valve 904, the second-stage high-pressure heater inlet regulating valve 905, and the third-stage high-pressure heater inlet regulating valve 906 and three-stage high-pressure heater outlet regulating valve 907, open the cold and heat storage medium tank connection valve 14 and solar heat storage medium regulating valve 18, start the heat storage medium pump 12, and adjust the heat storage medium pump 12 and solar heat storage medium
- the valve 18 cooperates to adjust the flow of the cold heat storage medium entering the heat storage medium heater 10 for heat exchange with the high-temperature flue gas and the flow of the heat storage medium entering the solar heat collection device 11 for heating.
- the heated heat storage medium passes through the heat
- the left and right inlets of the heat storage medium tank 15 enter the hot melt tank 15, and the mass balance of the heat medium stored in the cold and heat storage medium tank 13 and the heat storage medium tank 15 is adjusted through the cold and heat storage medium tank connection valve 14 to adjust the target In order to reduce the output of the steam turbine under the condition of the stable combustion of the boiler 1, while effectively storing solar heat.
- the present invention has the following advantages:
- the invention realizes the coupling of solar energy and coal-fired power generation by increasing the external high-temperature heat storage of the unit, which not only quickly offsets the output power disturbance caused by the change of solar radiation intensity, maintains the stable output of the steam turbine, but also realizes the decoupling of the turbine and the furnace, which greatly improves Operational flexibility of power generation system.
- the present invention can control the flow of the heat storage medium entering the solar heat collection device and the heat storage medium heater, utilize solar energy, reduce coal consumption, and improve economy; meanwhile, the heat storage medium is stored outside the coal-fired unit during low-load operation Satisfy the high-grade energy remaining after the load of the steam turbine, enhance the low-load operation capacity of the system, and improve the energy utilization efficiency.
- the present invention can adjust the feed water flow and temperature into the heat storage medium and the feed water heat exchanger through the opening and closing of the high-pressure heater regulating valve group, so that the system can meet the requirements of the rapid variable load rate of the unit.
- the heat medium exchanges heat to increase the feed water temperature, thereby improving the rapid load change capability of the unit.
- FIG. 1 is a schematic diagram of the solar coal-fired coupling flexible power generation system of the present invention.
- the present invention is a solar coal-fired coupled flexible power generation system, a coal-fired generator set thermal system and a high-temperature heat storage system coupled with solar thermal power generation:
- the thermal system of the coal-fired generator set includes a boiler 1, a high pressure cylinder of a steam turbine 2, a low pressure cylinder of a steam turbine 3, a condenser 4, a condensate pump 5, a low pressure heater 6, a deaerator 7, a feed water pump 8, a high pressure
- the heater and regulating valve group 9; the heat storage medium heater 10 is also arranged in the flue of the boiler 1; the superheated steam outlet of the boiler 1 is connected with the inlet of the high pressure cylinder 2 of the steam turbine; the feed water inlet and the high pressure heater of the boiler 1 Connected with the feedwater outlet of the regulating valve group 9; the steam outlet of the high-pressure cylinder 2 of the steam turbine communicates with the inlet of the low-pressure cylinder 3 of the steam turbine through the boiler 1; the first-stage extraction steam outlet of the low-pressure cylinder 3 of the steam turbine is connected to the high-pressure heater
- the steam inlet of the regulating valve group 9 is connected by a pipe, the second-
- the high-temperature heat storage system coupled with solar thermal power generation includes a solar heat collection device 11, a heat storage medium pump 12, a cold and heat storage medium tank 13, a cold and heat storage medium tank connection valve 14, and a heat storage medium tank 15 that are connected in sequence.
- Heat storage medium tank outlet regulating valve 17 and heat storage medium and feed water heat exchanger 16 also including solar heat storage medium regulating valve 18; the entrance of solar heat collection device 11 through solar heat storage medium regulating valve 18 and heat storage medium
- the pump 12 is connected to the cold and heat storage medium outlet of the cold and heat storage medium tank 13; the cold and heat storage medium outlet of the cold and heat storage medium tank 13 is also connected through the heat storage medium pump 12 and the inlet of the heat storage medium heater 10; solar energy
- the outlet of the heat collection device 11 is connected with the right inlet of the heat storage medium of the heat storage medium tank 15 through a pipe; the outlet of the heat storage medium heater 10 is connected with the left inlet of the heat storage medium of the heat storage medium tank 15 through a pipe
- the high-pressure heater and regulating valve group 9 is arranged with a first-stage high-pressure heater 901, a second-stage high-pressure heater 902, and a third-stage high-pressure heater 903, and also includes a first-stage high-pressure heater inlet regulating valve 904, Two-stage high-pressure heater inlet regulating valve 905, three-stage high-pressure heater inlet regulating valve 906, and three-stage high-pressure heater outlet regulating valve 907;
- the feed water outlet of the three-stage high pressure heater 903 is the feed water of the high-pressure heater and regulating valve group 9 Outlet;
- the feedwater inlet of the primary high-pressure heater 901 is the feedwater inlet of the high-pressure heater and the regulating valve group 9, the feedwater outlet of the primary high-pressure heater 901 and the feedwater inlet of the secondary high-pressure heater 902 are connected through a pipeline;
- the feedwater outlet of the high-pressure heater 902 is connected to the feedwater inlet of the three-stage high-pressure heater 903 through a
- the heat storage medium and the feedwater inlet of the feedwater heat exchanger 16 and the feedwater inlet of the primary high pressure heater 901 are connected through the primary high pressure heater inlet regulating valve 904, and are also connected to the secondary high pressure heater.
- the feedwater inlet of the heater 902 is connected through the two-stage high-pressure heater inlet regulating valve 905, and the feedwater inlet of the three-stage high-pressure heater 903 is connected through the three-stage high-pressure heater inlet regulating valve 906, and is also connected with the three-stage high-pressure heater
- the feedwater outlet of 903 is connected through the three-stage high-pressure heater outlet regulating valve 907; the heat storage medium and the feedwater outlet of the feedwater heat exchanger 16 are also connected with the feedwater outlet of the three-stage high pressure heater 903.
- the heat storage medium used in the high-temperature heat storage system coupled with solar thermal power generation is a single-phase flow medium such as molten salt and heat transfer oil, which ensures single-phase flow in the heat exchanger and improves system safety and stability.
- the temperature of the flue gas at the flue of the boiler 1 where the heat storage medium heater 10 is located is between 550°C and 700°C to ensure that the stored energy of the heat storage medium is high-grade energy.
- the operating method of the solar coal-fired coupled flexible power generation system of the present invention maintains the stability of the output power of the steam turbine when the solar radiation conditions change. It is necessary to maintain the stability of the working conditions of the heat storage medium and the feedwater heat exchanger 16, namely Maintain the heat storage medium flow rate, feed water flow rate and feed water temperature that enter the heat storage medium and feedwater heat exchanger 16 unchanged.
- the heater 10 simultaneously opens the heat storage medium tank outlet regulating valve 17, and the heat storage medium tank outlet regulating valve 17 regulates the flow of heat storage medium entering the heat storage medium and feedwater heat exchanger 16 through the first-stage high pressure
- One or more of the heater inlet regulating valve 904, the two-stage high-pressure heater inlet regulating valve 905, the three-stage high-pressure heater inlet regulating valve 906, and the three-stage high-pressure heater outlet regulating valve 907 are switched on and off to enter the heat storage medium and The feed water flow and temperature of the feed water heat exchanger 16 are adjusted.
- the adjustment objective is to increase the feed water temperature and make the rate of change between the main steam flow from the boiler 1 into the high pressure cylinder 2 of the steam turbine and the reheat steam flow into the low pressure cylinder 3 of the steam turbine It can meet the rate of change of steam turbine electromechanical load and make the system meet the requirements of rapid variable load rate; when the generator set needs to reduce the load, close the first-stage high-pressure heater inlet regulating valve 904, the second-stage high-pressure heater inlet regulating valve 905, and the third-stage high pressure
- the heater inlet regulating valve 906 and the three-stage high pressure heater outlet regulating valve 907 open the cold and hot heat storage medium tank connection valve 14 and the solar heat storage medium regulating valve 18, start the heat storage medium pump 12, and pass the heat storage medium pump 12 and
- the solar heat storage medium regulating valve 18 cooperates to adjust the flow of the cold heat storage medium entering the heat storage medium heater 10 for heat exchange with high-temperature flue gas and the flow of the heat storage medium entering the solar heat collection device 11 for heating.
- the heat medium enters the hot melt tank 15 through the left and right inlets of the heat storage medium tank 15 respectively, and adjusts the heat medium stored in the cold and heat storage medium tank 13 and the heat storage medium tank 15 through the cold and heat storage medium tank connection valve 14
- the mass balance, the adjustment objective is: to reduce the output of the steam turbine under the condition of stable combustion of the boiler 1, while effectively storing solar heat.
- the present invention uses a high-temperature heat storage system to couple solar thermal power generation and coal-fired power generation thermal systems to quickly offset the output power disturbance caused by changes in solar radiation intensity.
- environmental conditions such as sunlight change, the heat storage medium and the water supply heat exchanger are maintained.
- the coal-fired power generation system stores the remaining high-grade energy after meeting the load of the steam turbine externally to improve the minimum load operation capacity of the coal-fired power generation system.
- the invention can solve the problem of insufficient flexibility and economy when solar energy and coal-fired generating units participate in peak shaving.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Claims (6)
- 一种太阳能燃煤耦合灵活发电***,其特征在于:包括燃煤发电机组热力***和耦合太阳能热发电的高温储热***:其中,所述燃煤发电机组热力***包括依次连接的锅炉(1)、汽轮机高压缸(2)、汽轮机中低压缸(3)、凝汽器(4)、凝结水泵(5)、低压加热器(6)、除氧器(7)、给水泵(8)、高压加热器与调节阀组(9);所述锅炉(1)的烟道中还布置有储热介质加热器(10);锅炉(1)的过热蒸汽出口与汽轮机高压缸(2)的入口相连通;锅炉(1)的给水入口和高压加热器与调节阀组(9)的给水出口相连通;汽轮机高压缸(2)的蒸汽出口通过锅炉(1)与汽轮机中低压缸(3)进汽口相连通;汽轮机中低压缸(3)的第一级抽汽出口与高压加热器与调节阀组(9)的蒸汽入口通过管道相连通,第二级抽汽出口与除氧器(7)的蒸汽入口通过管道相连通,第三级抽汽出口与低压加热器(6)的蒸汽入口通过管道相连通;汽轮机中低压缸(3)的蒸汽出口与凝汽器(4)的进气口相连通;凝汽器(4)的水工质出口通过凝结水泵(5)与低压加热器(6)的水工质入口相连通;低压加热器(6)的水工质出口与除氧器(7)的水工质入口相连通;所述耦合太阳能热发电的高温储热***包括依次相连的太阳能集热装置(11)、储热介质泵(12)、冷储热介质罐(13)、冷热储热介质罐连接阀(14)、热储热介质罐(15)、热储热介质罐出口调节阀(17)和储热介质与给水换热器(16),还包括太阳能储热介质调节阀(18);太阳能集热装置(11)的入口通过太阳能储热介质调节阀(18)和储热介质泵(12)与冷储热介质罐(13)的冷储热介质出口相连通;所述冷储热介质罐(13)的冷储热介质出口还通过储热介质泵(12)储热介质加热器(10)入口相连通;太阳能集热装置(11)的出口与热储热介质罐(15)的热储热介质右入口通过管道相连通;储热介 质加热器(10)出口通过管道与热储热介质罐(15)的热储热介质左入口相连通;所述储热介质与给水换热器(16)的储热介质出口与冷储热介质罐(13)的冷储热介质入口通过管道相连通,储热介质与给水换热器(16)的储热介质入口和热储热介质罐(15)的出口通过热储热介质罐出口调节阀(17)相连通;储热介质与给水换热器(16)的给水出口与锅炉(1)给水入口通过管道相连通;储热介质与给水换热器(16)的给水入口与给水泵(8)的水工质出口相连通;所述高温储热***的冷储热介质罐(13)与热储热介质罐(15)通过冷热储热介质罐连接阀(14)相连通。
- 根据权利要求1所述的一种太阳能燃煤耦合灵活发电***,其特征在于:所述高压加热器与调节阀组(9)布置有一级高压加热器(901)、二级高压加热器(902)和三级高压加热器(903),还包括一级高压加热器入口调节阀(904)、二级高压加热器入口调节阀(905)、三级高压加热器入口调节阀(906)和三级高压加热器出口调节阀(907);三级高压加热器(903)的给水出口为高压加热器与调节阀组(9)的给水出口;一级高压加热器(901)的给水入口为高压加热器与调节阀组(9)的给水入口,一级高压加热器(901)的给水出口与二级高压加热器(902)的给水入口通过管道相连通;二级高压加热器(902)的给水出口通过管道与三级高压加热器(903)的给水入口相连通;汽轮机高压缸(2)的蒸汽出口通过管道与二级高压加热器(902)的过热蒸汽入口相连通;汽轮机高压缸(2)的第一级抽汽出口与三级高压加热器(903)的蒸汽入口通过管道相连通;汽轮机中低压缸(3)的第一级抽汽出口与一级高压加热器(901)的蒸汽入口通过管道相连通。
- 根据权利要求1所述的一种太阳能燃煤耦合灵活发电***,其特征在于:所述储热介质与给水换热器(16)的给水入口与一级高压加热器(901)的给水入口通过一级高压加热器入口调节阀(904)相连通,还与二级高压加 热器(902)的给水入口通过二级高压加热器入口调节阀(905)相连通,还与三级高压加热器(903)的给水入口通过三级高压加热器入口调节阀(906)相连通,还与三级高压加热器(903)的给水出口通过三级高压加热器出口调节阀(907)相连通;储热介质与给水换热器(16)的给水出口与三级高压加热器(903)的给水出口也相连通。
- 根据权利要求1所述的一种太阳能燃煤耦合灵活发电***,其特征在于:所述耦合太阳能热发电的高温储热***使用的储热介质为熔盐、导热油类单相流动的介质。
- 根据权利要求1所述的一种太阳能燃煤耦合灵活发电***,其特征在于:所述储热介质加热器(10)所处锅炉(1)烟道处的烟气温度在550℃~700℃之间。
- 权利要求1至5任一项所述的一种太阳能燃煤耦合灵活发电***的运行方法,其特征在于:在太阳辐照条件变化时维持汽轮机输出功率的稳定,需要维持储热介质与给水换热器(16)工况的稳定,即维持进入储热介质与给水换热器(16)的储热介质流量、给水流量和给水温度都不变,当热储热介质罐(15)中容量不足时,增加进入储热介质加热器(10)的储热介质量;当光照条件良好且发电机组需要升负荷时,通过调节太阳能储热介质调节阀(18)和储热介质泵(12)增加进入太阳能集热装置(11)的储热介质流量,停止储热介质进入储热介质加热器(10),同时打开热储热介质罐出口调节阀(17),通过热储热介质罐出口调节阀(17)对进入储热介质与给水换热器(16)的热储热介质流量进行调节,通过一级高压加热器入口调节阀(904)、二级高压加热器入口调节阀(905)、三级高压加热器入口调节阀(906)和三级高压加热器出口调节阀(907)中一个或多个的开断对进入储热介质与给水换热器(16)的给水流量和温度进行调节,调节目标为:使给水温度提高且使从 锅炉(1)进入汽轮机高压缸(2)的主蒸汽流量与进入汽轮机中低压缸(3)的再热蒸汽流量的变化率能够满足汽轮机电负荷变化率,使***满足快速变负荷速率的要求;当发电机组需要降负荷时,关闭一级高压加热器入口调节阀(904)、二级高压加热器入口调节阀(905)、三级高压加热器入口调节阀(906)和三级高压加热器出口调节阀(907),打开冷热储热介质罐连接阀(14)和太阳能储热介质调节阀(18),启动储热介质泵(12),通过储热介质泵(12)和太阳能储热介质调节阀(18)配合对进入储热介质加热器(10)与高温烟气热交换的冷储热介质的流量以及进入太阳能集热装置(11)进行加热的储热介质流量进行调节,加热后的储热介质分别通过热储热介质罐(15)的左入口和右入口进入热储热介质罐(15),通过冷热储热介质罐连接阀(14)调节冷储热介质罐(13)和热储热介质罐(15)所存储热介质质量平衡,调节目标为:在锅炉(1)稳定燃烧的条件下降低汽轮机出力,同时有效存储太阳能热量。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/427,644 US11560879B2 (en) | 2019-03-11 | 2019-06-22 | Solar-aided coal-fired flexible power generation system and operation method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910181982.1 | 2019-03-11 | ||
CN201910181982.1A CN109958593B (zh) | 2019-03-11 | 2019-03-11 | 一种太阳能燃煤耦合灵活发电***及运行方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020181677A1 true WO2020181677A1 (zh) | 2020-09-17 |
Family
ID=67024150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2019/092429 WO2020181677A1 (zh) | 2019-03-11 | 2019-06-22 | 一种太阳能燃煤耦合灵活发电***及运行方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US11560879B2 (zh) |
CN (1) | CN109958593B (zh) |
WO (1) | WO2020181677A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114562712A (zh) * | 2021-12-27 | 2022-05-31 | 杭州杭锅电气科技有限公司 | 一种基于熔盐储热的智慧热电联产*** |
CN115324673A (zh) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | 一种煤电机组参与电网调峰的***及控制方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110748465B (zh) * | 2019-10-21 | 2020-10-27 | 西安交通大学 | 一种氢储能太阳能燃煤耦合灵活发电***及运行方法 |
CN110761859B (zh) * | 2019-11-08 | 2022-04-22 | 河南九域恩湃电力技术有限公司 | 一种基于低压加热回路的斜温层储热调峰***及调峰方法 |
CN111306820B (zh) * | 2020-02-19 | 2021-01-15 | 西安交通大学 | 一种光煤互补***变工况的发电功率寻优控制方法 |
CN113294306B (zh) * | 2021-06-04 | 2023-08-15 | 西安交通大学 | 一种光热电站启动旁路的能量回收***及运行方法 |
CN113586185B (zh) * | 2021-09-13 | 2022-10-04 | 西安交通大学 | 一种燃煤锅炉烟气与蒸汽联合储热深度调峰***及运行方法 |
CN113623032B (zh) * | 2021-09-13 | 2022-10-11 | 西安交通大学 | 一种燃煤锅炉烟气储热发电一体化***及运行方法 |
CN114718677B (zh) * | 2022-04-21 | 2024-04-05 | 苏州西热节能环保技术有限公司 | 一种供热供气机组的深度调峰热电解耦*** |
CN114812247B (zh) * | 2022-04-27 | 2023-04-07 | 华北电力大学 | 耦合储热的高灵活性燃煤发电*** |
CN114961908B (zh) * | 2022-06-07 | 2023-05-05 | 华能国际电力股份有限公司 | 一种太阳能燃煤耦合发电***及方法 |
CN115638034B (zh) * | 2022-10-13 | 2024-05-24 | 东方电气集团东方汽轮机有限公司 | 一种采用太阳能光热提升垃圾发电循环效率的***及方法 |
CN115653714A (zh) * | 2022-11-04 | 2023-01-31 | 中国成达工程有限公司 | 一种利用熔盐储热的定负荷锅炉运行调峰发电***及方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015135720A1 (en) * | 2014-03-10 | 2015-09-17 | Alfa Laval Corporate Ab | Control of a flow of fluid through a heat exchanger |
US20170284378A1 (en) * | 2014-02-24 | 2017-10-05 | Alstom Technology Ltd. | Solar Thermal Power System |
CN108180125A (zh) * | 2017-12-07 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | 光热与燃煤互补发电***及高效发电*** |
EP3289216A4 (en) * | 2015-04-29 | 2018-11-07 | Intex Holdings Pty Ltd. | A system for generating electrical power from low temperature steam |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126037A1 (de) * | 1991-08-06 | 1993-02-11 | Siemens Ag | Gas- und dampfturbinenkraftwerk mit einem solar beheizten dampferzeuger |
US20090125152A1 (en) * | 2007-11-09 | 2009-05-14 | Markron Technologies, Llc | Method of measurement, control, and regulation for the solar thermal hybridization of a fossil fired rankine cycle |
CN101270675A (zh) * | 2008-04-24 | 2008-09-24 | 华北电力大学 | 太阳能和燃煤机组混合的热发电*** |
CN101260815B (zh) * | 2008-04-24 | 2010-06-02 | 华北电力大学 | 抛物面槽式太阳能集热器辅助燃煤锅炉的混合热发电*** |
CN102110125B (zh) | 2009-12-29 | 2013-09-18 | 比亚迪股份有限公司 | 根据汉字快速查找兴趣点的检索方法 |
CN103375369B (zh) * | 2012-04-28 | 2017-02-08 | 杭州三花研究院有限公司 | 一种太阳能辅助燃煤电站发电*** |
CN102758746A (zh) * | 2012-06-30 | 2012-10-31 | 华北电力大学(保定) | 太阳能集热器辅助燃煤机组耦合发电*** |
WO2014123537A1 (en) * | 2013-02-08 | 2014-08-14 | Skyfuel, Inc. | Solar/gas hybrid power system configurations and methods of use |
JP2014188475A (ja) * | 2013-03-28 | 2014-10-06 | Hitachi Ltd | 太陽熱利用の発電プラント・海水淡水化プラント統合システム |
CN109854313B (zh) * | 2019-03-11 | 2020-03-24 | 西安交通大学 | 一种灵活燃煤发电***及运行方法 |
CN109812796B (zh) * | 2019-03-13 | 2020-06-02 | 西安交通大学 | 参与一次调频的太阳能辅助燃煤发电***及其控制方法 |
-
2019
- 2019-03-11 CN CN201910181982.1A patent/CN109958593B/zh active Active
- 2019-06-22 US US17/427,644 patent/US11560879B2/en active Active
- 2019-06-22 WO PCT/CN2019/092429 patent/WO2020181677A1/zh active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170284378A1 (en) * | 2014-02-24 | 2017-10-05 | Alstom Technology Ltd. | Solar Thermal Power System |
WO2015135720A1 (en) * | 2014-03-10 | 2015-09-17 | Alfa Laval Corporate Ab | Control of a flow of fluid through a heat exchanger |
EP3289216A4 (en) * | 2015-04-29 | 2018-11-07 | Intex Holdings Pty Ltd. | A system for generating electrical power from low temperature steam |
CN108180125A (zh) * | 2017-12-07 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | 光热与燃煤互补发电***及高效发电*** |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114562712A (zh) * | 2021-12-27 | 2022-05-31 | 杭州杭锅电气科技有限公司 | 一种基于熔盐储热的智慧热电联产*** |
CN115324673A (zh) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | 一种煤电机组参与电网调峰的***及控制方法 |
CN115324673B (zh) * | 2022-07-25 | 2024-05-24 | 广西电网有限责任公司电力科学研究院 | 一种煤电机组参与电网调峰的***及控制方法 |
Also Published As
Publication number | Publication date |
---|---|
US11560879B2 (en) | 2023-01-24 |
CN109958593B (zh) | 2020-06-02 |
US20220099071A1 (en) | 2022-03-31 |
CN109958593A (zh) | 2019-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020181677A1 (zh) | 一种太阳能燃煤耦合灵活发电***及运行方法 | |
WO2020181675A1 (zh) | 一种灵活燃煤发电***及运行方法 | |
CN101876299B (zh) | 一种将太阳能热发电与生物质发电相结合的方法及*** | |
US9909496B2 (en) | Power generation system | |
CN111577410B (zh) | 燃气轮机进气温度控制装置及燃气轮机进气温度控制方法 | |
CN202281212U (zh) | 一种电站锅炉二次再热*** | |
CN113586185B (zh) | 一种燃煤锅炉烟气与蒸汽联合储热深度调峰***及运行方法 | |
CN112611010B (zh) | 一种多热源热电联产机组发电负荷灵活调节***的调节方法 | |
WO2023246030A1 (zh) | 基于熔盐储热的火电机组灵活运行*** | |
CN102966495B (zh) | 一种塔式太阳能-蒸汽燃气联合循环发电*** | |
CN102494329B (zh) | 锅炉烟气余热综合利用装置 | |
CN217057504U (zh) | 一种多介质低温省煤器*** | |
CN113623032B (zh) | 一种燃煤锅炉烟气储热发电一体化***及运行方法 | |
CN113803706B (zh) | 一种基于热风再循环利用锅炉尾部烟气余热的发电*** | |
CN202914258U (zh) | 一种塔式太阳能辅助燃气-蒸汽一体化热发电*** | |
CN209671079U (zh) | 燃气蒸汽联合循环的气体燃料加热*** | |
CN112963819A (zh) | 一种深度调峰双炉膛电站煤粉锅炉的汽水***布置结构 | |
CN104929707B (zh) | 电站排汽潜热与排烟余热联合发电***和优化运行方法 | |
CN220135438U (zh) | 耦合煤气柜和熔盐储能的煤气发电装置 | |
CN216346223U (zh) | 一种应用于余热锅炉入口粉尘的冷却*** | |
CN217235542U (zh) | 一种烟气循环余热发电*** | |
CN114935137A (zh) | 一种太阳能辅助燃煤灵活发电***及工作方法 | |
CN116771435A (zh) | 耦合煤气柜和熔盐储能的煤气发电*** | |
CN117605552A (zh) | 一种强柔性高变负荷速率燃煤发电***及其运行方法 | |
CN116122929A (zh) | 一种发电机组灵活调峰***及其运行方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19919442 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19919442 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19919442 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 25.05.2022) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19919442 Country of ref document: EP Kind code of ref document: A1 |