WO2013086894A1 - Appareil de production d'énergie complémentaire en provenance d'énergie solaire et d'énergie à base de méthane - Google Patents

Appareil de production d'énergie complémentaire en provenance d'énergie solaire et d'énergie à base de méthane Download PDF

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Publication number
WO2013086894A1
WO2013086894A1 PCT/CN2012/083103 CN2012083103W WO2013086894A1 WO 2013086894 A1 WO2013086894 A1 WO 2013086894A1 CN 2012083103 W CN2012083103 W CN 2012083103W WO 2013086894 A1 WO2013086894 A1 WO 2013086894A1
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WO
WIPO (PCT)
Prior art keywords
biogas
steam
solar
water
heat
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Application number
PCT/CN2012/083103
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English (en)
Chinese (zh)
Inventor
陈义龙
杨清萍
张岩丰
Original Assignee
武汉凯迪工程技术研究总院有限公司
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Priority claimed from CN2011104119181A external-priority patent/CN102493931A/zh
Priority claimed from CN 201120515643 external-priority patent/CN202326049U/zh
Application filed by 武汉凯迪工程技术研究总院有限公司 filed Critical 武汉凯迪工程技术研究总院有限公司
Publication of WO2013086894A1 publication Critical patent/WO2013086894A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
    • 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
    • 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

Definitions

  • the invention relates to a clean energy power generation device, in particular to a solar energy and biogas energy complementary power generation device. Background technique
  • biogas that exists in nature and the biogas produced by fermenting human and animal waste and agricultural and forestry waste biomass are also important renewable energy sources, which are also cleaner than fossil energy.
  • 0 2 Zero emission characteristics, but due to the widespread distribution of human and animal waste, agricultural and forestry waste biomass, large dispersion, and difficult collection, not only the utilization rate is low, but also the environmental pollution is extremely high. How to effectively manage human and animal manure and agroforestry waste biomass, and combine it with solar thermal power generation to realize turning waste into treasure has always been a difficult problem for researchers in this field. Summary of the invention
  • the object of the present invention is to make full use of the energy contained in human and animal waste and abandonment biomass of agricultural and forestry, and overcome the defects that the known solar thermal power station is affected by the weather, unstable energy collection, and discontinuity, and provide a solar energy and biogas energy. Complementary power generation equipment.
  • the invention provides a solar energy and biogas energy complementary power generation device, comprising a solar heat collecting device, a biogas storage tank, a biogas boiler, a steam turbine unit, and a generator coupled with a steam turbine unit, wherein the biogas boiler is provided with a biogas burner, Steam superheater and process water preheater.
  • An output end of the solar heat collecting device is connected to an input end of a steam superheater through a first switching valve, and an output end of the steam superheater is connected to a high pressure steam inlet of a steam turbine through a steam regulating valve, and a low pressure of the steam turbine unit a steam outlet connected to the input of the condenser, the output of the condenser It is connected to the input end of the deaerator to remove oxygen from the circulating water to prevent oxidation corrosion of equipment and pipelines.
  • the output end of the deaerator is connected to the input end of the feed water pump, and the output end of the feed water pump is connected to the input end of the process water preheater through the second on-off valve and the feed water regulating valve, and the preheating of the circulating water is passed. It can save biogas consumption and improve thermal efficiency.
  • the output of the process water preheater is connected to the input of the solar collector, thereby forming a circulation loop for the steam.
  • the outlet of the biogas storage tank is connected to a biogas burner through a biogas compression pump to provide heat to the steam in the steam superheater.
  • the third switching valve and the biogas regulating valve are arranged on the pipeline between the outlet of the biogas storage tank and the biogas burner, the third switching valve is used for controlling the opening and closing of the biogas pipeline, and the biogas regulating valve controls the flow of the biogas.
  • the size of the biogas burner flame is adjusted to control the temperature of the steam in the steam superheater.
  • the heat conducting medium in the above solar heat collecting device is water. After the water absorbs the solar energy, the steam is directly vaporized into a high temperature and high pressure steam to work on the steam turbine unit, and the structure is simple and the cost is low.
  • the solar energy and biogas energy complementary power generation device further includes a soft water storage tank, wherein the water outlet of the soft water storage tank is connected to the water supply port of the deaerator through a water pump, and the water outlet of the soft water storage tank and the deaerator A fourth on-off valve is provided on the line between the water supply ports, thereby constituting a circulating water reserve and replenishment system in the steam circulation circuit.
  • the soft water storage tank is used for storing soft water prepared from a chemical water treatment device, and the soft water removes calcium and magnesium ions therein, thereby effectively preventing scaling inside the device; and the fourth switching valve is used for controlling the supply of soft water. And the flow size to supplement the loss of circulating water according to the actual situation.
  • the solar energy and biogas energy complementary power generating device further includes a biogas generating device, wherein the biogas outlet of the biogas generating device is connected to an input end of the gas water separator through a fifth switching valve, and an output end of the gas water separator Connected to the input end of the desulfurization decarbonization column, the output end of the desulfurization decarbonization column is connected to the inlet of the biogas storage tank.
  • the biogas generated during the fermentation process is a mixed gas containing about 60-65% methane and 30-35% carbon dioxide, 1 % hydrogen sulfide, a small amount of water, carbon monoxide, hydrogen and other hydrocarbons, wherein the presence of hydrogen sulfide and water is highly corrosive to equipment, carbon dioxide has no combustion value, and it will consume energy in the system, so gas
  • the water separator and the desulfurization and decarbonization tower are arranged to purify the biogas and remove ineffective components such as water vapor, hydrogen sulfide and carbon dioxide.
  • a pressure gauge and a thermometer are disposed on the pipeline at the high pressure steam inlet of the steam turbine unit.
  • the purpose of setting the pressure gauge and thermometer is to intuitively control the steam pressure and temperature of the input turbine group to meet the operating requirements of the steam turbine unit.
  • a sixth on-off valve is passed between the output end of the process water preheater and the input end of the steam superheater Connected.
  • the sixth on-off valve When the sun is sunny during the day, the sixth on-off valve is closed, and the steam and the biogas can simultaneously provide the steam required for the steam turbine to generate electricity.
  • the sixth on-off valve When the night is coming or rainy weather, the sixth on-off valve is opened and the first on-off valve is closed, and the steam line of the steam turbine unit does not have to flow to the solar heat collecting device, and only the biogas can separately supply the steam required for the steam turbine unit to generate electricity.
  • Another solar energy and biogas energy complementary power generation device comprises a solar heat collecting device, a biogas storage tank, a biogas boiler, a steam turbine unit, and a generator coupled with a steam turbine unit, wherein the biogas boiler is provided with a biogas burner , steam superheater and process water preheater.
  • the output end of the solar heat collecting device is connected to the heat medium inlet of the heat storage heat exchanger through a first switching valve, and the heat medium outlet of the heat storage heat exchanger is connected to the input end of the solar heat collecting device through a hydrothermal pump .
  • the steam output end of the heat storage heat exchanger is connected to the input end of the steam superheater through a seventh switching valve, and the output end of the steam superheater is connected to the high pressure steam inlet of the steam turbine unit through a steam regulating valve, the steam turbine unit
  • the low pressure steam outlet is connected to the input end of the condenser, and the output end of the condenser is connected to the input end of the deaerator to remove oxygen in the circulating water to prevent oxidation corrosion of the equipment and the pipeline.
  • the output end of the deaerator is connected to the input end of the feed water pump, and the output end of the feed water pump is connected to the input end of the process water preheater through the second on-off valve and the feed water regulating valve, and the preheating of the circulating water is passed. It can save biogas consumption and improve thermal efficiency.
  • the output of the process water preheater is connected to the circulating water input of the heat storage heat exchanger, thereby forming a circulation loop for the steam.
  • the outlet of the biogas storage tank is connected to a biogas burner through a biogas compression pump to provide heat to the steam in the steam superheater.
  • the third switching valve and the biogas regulating valve are arranged on the pipeline between the outlet of the biogas storage tank and the biogas burner, the third switching valve is used for controlling the opening and closing of the biogas pipeline, and the biogas regulating valve controls the flow of the biogas.
  • the size of the biogas burner flame is adjusted to control the temperature of the steam in the steam superheater.
  • the heat conducting medium in the above solar heat collecting device is made of high temperature heat conducting oil, etc., and may be heavy oil, paraffin, molten salt, or other known liquid heat conductive mixture, such as a mixture of biphenyl and diphenyl ether heating temperature up to 400. °C.
  • the high-temperature heat-conducting medium that absorbs solar energy transfers heat to the water through the heat storage heat exchanger, and the water is vaporized into high-temperature and high-pressure steam through the steam superheater to work on the steam turbine unit, and the operation is stable, safe and reliable.
  • it further comprises a soft water storage tank, wherein the water outlet of the soft water storage tank is connected to the water supply port of the deaerator through the water pump, and the pipe between the water outlet of the soft water storage tank and the water supply port of the deaerator A fourth on-off valve is provided on the road.
  • the soft water removes calcium and magnesium ions therein, thereby effectively preventing fouling inside the device; and the fourth on-off valve is used to adjust the supply and flow rate of the soft water to supplement the loss of circulating water.
  • the biogas outlet of the biogas generating device passing through the fifth switching valve Connected to the input end of the gas water separator, the output of the gas water separator is connected to the input end of the desulfurization decarbonization tower, and the output end of the desulfurization decarbonization tower is connected to the inlet of the biogas storage tank.
  • the setting of the biogas generating device can ensure the continuity of the operation of the system.
  • the gas water separator and the desulfurization and decarbonization tower can be set to purify the biogas, remove the ineffective components such as water vapor, hydrogen sulfide and carbon dioxide, and prevent corrosion of the equipment. Biogas utilization efficiency.
  • a pressure gauge and a thermometer are disposed on the pipeline at the high pressure steam inlet of the steam turbine unit.
  • the settings of the pressure gauge and thermometer can intuitively determine whether the steam pressure and temperature of the input turbine group have reached the rated design parameters, so that they can be adjusted in time to meet the operating requirements of the steam turbine unit.
  • the steam output end of the heat storage heat exchanger is further provided with an emergency switching valve connected to the outside.
  • the purpose of setting the emergency on/off valve is to cooperate with other on-off valves in the event of a sudden failure of the system to protect the system from safe shutdown.
  • the working principle of the present invention is briefly described as follows:
  • the biogas burner alone operates in a mode; 3.
  • the solar collector and the biogas burner operate in a synchronous mode when the daylight is insufficient.
  • the steam in the steam superheater can be heated.
  • the high-temperature and high-pressure steam formed is adjusted by the steam regulating valve to reach the rated pressure and temperature of the steam turbine, and then enters the steam turbine to do work and drive the generator. Power generation.
  • the steam that has been completed is cooled by the condenser into normal-pressure low-temperature water, and then the oxygen is removed by the deaerator, and then sent to the process water preheater through the feed water pump and the feed water regulating valve.
  • the circulating water output from the process water preheater can be reheated by the solar collector to return to the steam superheater, or it can be directly returned to the steam superheater to start a new cycle.
  • the biogas burner is further heated for the steam superheater.
  • the invention has the advantages that: the steam thermal power of the designed power generation equipment comes from clean and inexhaustible, inexhaustible solar energy, and biogas energy from fermentation of human and animal waste and waste biomass, two kinds of The synergy of energy complements not only the problems of solar energy dispersion and unstable energy collection, but also the pollution of human and animal waste and waste biomass to the environment, the production of biogas by-product biogas residue, biogas slurry or high-quality crop organic fertilizer. Waste is a treasure, and you can get it in one fell swoop. Compared with the traditional fossil energy power generation, the present invention neither emits SO ⁇ CO 2 and suppresses the influence of weather on the fluctuation of solar energy. Through the regulation of the corresponding on-off valve and regulating valve, the operation mode of the steam turbine is easily changed, so that the generator can be used 24 hours a day, day or night, whether it is sunny or cloudy. Stable power generation. DRAWINGS
  • Embodiment 1 is a schematic structural view of a solar energy and biogas energy complementary power generation device according to Embodiment 1. Among them: The tower top solar boiler directly transfers heat energy to the steam circulation line of the steam turbine unit.
  • FIG. 2 is a schematic structural view of a solar energy and biogas energy complementary power generation device according to Embodiment 2.
  • Solar solar heat collecting tubes directly transfer heat energy to the steam circulation pipeline of the steam turbine unit.
  • Embodiment 3 is a schematic structural view of a solar energy and biogas energy complementary power generation device according to Embodiment 3. Among them: The tower top solar energy boiler transfers heat energy indirectly to the steam circulation pipeline of the steam turbine unit.
  • FIG. 4 is a schematic structural view of a solar energy and biogas energy complementary power generation device according to Embodiment 4. Among them: Solar solar heat collecting tubes transfer heat energy indirectly to the steam circulation pipeline of the steam turbine unit. detailed description
  • the solar energy and biogas energy complementary power generation equipment shown in Fig. 1 is mainly composed of a solar heat collecting device, a biogas generating device 20, a gas water separator 31, a desulfurization decarbonization tower 32, a biogas storage tank 19, a biogas boiler 10, and a steam turbine unit 2.
  • the generator 1, the condenser 5, the deaerator 6, the feed water pump 7, the soft water storage tank 9 and the make-up water pump 8 associated with the steam turbine unit 2 are combined by a pipeline and a valve.
  • a biogas burner 16 is installed in the biogas boiler 10, a steam superheater 11 and a process water preheater 12.
  • the valve includes first to sixth on-off valves 22, 24, 28, 26, 21, 33, and an emergency on-off valve 30 for controlling the on and off of the pipeline; the steam regulating valve 23, the feedwater regulating valve 25, and the biogas regulating valve 27 , to regulate the flow of the corresponding fluid.
  • the solar heat collecting device shown in Fig. 1 comprises a tower top solar boiler 13 and a plurality of matching day mirrors 14 matched thereto, and the sunday mirror 14 can track the sun during the day to concentrate the sunlight to the heat collecting tubes of the solar boiler 13. on.
  • the heat collecting tube output end of the tower top solar boiler 13 is connected to the input end of the steam superheater 11 through the first switching valve 22, and the output end of the steam superheater 11 is connected to the high pressure steam inlet 3 of the steam turbine unit 2 through the steam regulating valve 23, and
  • a pressure gauge P and a thermometer T are installed on the pipeline at the high pressure steam inlet 3 of the steam turbine unit 2 to visually display the pressure and temperature parameters of the steam.
  • the low pressure steam outlet 4 of the steam turbine unit 2 described above is connected to the input end of the condenser 5, and the output end of the condenser 5 is connected to the input end of the deaerator 6.
  • the water outlet of the soft water storage tank 9 is connected to the water supply port of the deaerator 6 through the makeup water pump 8, and the fourth switching valve 26 is disposed on the pipeline between the water outlet of the soft water storage tank 9 and the water supply port of the deaerator 6. To control the opening and closing of the water supply pipe and the amount of water.
  • the output end of the deaerator 6 is connected to the input end of the feed water pump 7, and the output end of the feed water pump 7 is connected to the input end of the process water preheater 12 through the second on-off valve 24 and the feed water regulating valve 25, the process water preheater
  • the output of 12 is connected to the input end of the collecting tube of the overhead solar boiler 13 to form a circulation loop for the steam of the steam turbine unit 2.
  • the biogas outlet of the biogas generating device 20 is connected to the input end of the gas water separator 31 through the fifth switching valve 21, and the output end of the gas water separator 31 is connected to the input end of the desulfurization decarbonization tower 32, and the desulfurization decarbonization tower 32 is connected.
  • the output is connected to the inlet of the biogas storage tank 19, and the outlet of the biogas storage tank 19 is connected to the biogas burner 16 via a biogas compression pump 18.
  • the third on-off valve 28 and the biogas regulating valve 27 are disposed on the pipeline between the outlet of the biogas storage tank 19 and the biogas burner 16 to regulate the on and off of the biogas, and thereby adjust the size of the flame in the biogas burner 16. Thereby controlling the temperature of the steam in the steam superheater 11.
  • the sixth on-off valve 33 is disposed on the connecting line between the output end of the process water preheater 12 and the input end of the steam superheater 11.
  • the sixth on-off valve 33 is opened, and the first on-off valve 22 is closed, and the circulating steam of the steam turbine unit 2 can bypass the heat collecting tube of the tower-top solar boiler 13, thereby saving the steam circulation path, thereby reducing the biogas heat energy consumption.
  • the emergency switch valve 30 connected to the outside is disposed at the output end of the heat collecting pipe of the tower top solar boiler 13 to cooperate with other on-off valves in the event of a sudden failure, and the protection device is safely shut down.
  • Embodiment 1 The working process of Embodiment 1 is as follows: When there is sunlight during the day, the sixth on-off valve 33 is closed, the first on-off valve 22 and the second on-off valve 24 are opened, and the system is in a solar-heat collecting operation state. At this time, the day-to-day mirror 14 tracks the sunlight, and collects the sunlight heat energy on the heat collecting pipe of the tower top solar boiler 13, so that the circulating water therein is heated and pressurized, and flows into the steam superheater 11 to form high-temperature high-pressure steam. The high-temperature and high-pressure steam is adjusted to the rated pressure and temperature by the steam regulating valve 23, and then sent to the steam turbine unit 2 for power generation.
  • the steam after the work is cooled by the condenser 5 to a normal-pressure low-temperature water of about 40 ° C, and is sent to the deaerator 6 to remove the dissolved oxygen in the water, and then sent to the process water preheater 12 by the feed water pump 7 to absorb the waste heat. Finally, it is sent back to the heat collecting tube of the tower top solar boiler 13 to start the next cycle.
  • the surface water or well water collected separately is initially purified, and then the calcium and magnesium ions are removed from the chemical water treatment workshop and sent to the soft water storage tank 9 for use.
  • the soft water is sucked by the make-up water pump 8, and the flow rate is controlled by the fourth on-off valve 26, and is supplied to the deaerator 6 to compensate for the amount of water loss.
  • a mode in which solar energy and biogas can co-power can be used.
  • the third on-off valve 28 is opened, and the biogas in the biogas storage tank 19 is sucked into the biogas burner 16 by the biogas compression pump 18, and the heat energy generated by the biogas combustion is applied to the steam superheater 11, further Heat the steam to compensate for the effects of insufficient solar energy.
  • the biogas regulating valve 27 can be used to control the size of the biogas combustion flame, thereby controlling the temperature and pressure of the steam in the steam superheater to achieve the rated parameters required for the steam turbine unit 2 to generate electricity.
  • the fifth on-off valve 21 is opened, and the biogas generated by the biogas generating device 20 is treated by the gas-water separator 31 and the desulfurization and decarbonization tower 32, and then input into the biogas storage tank 19 for use.
  • the pipeline between the biogas generating device 20 and the biogas storage tank 19 can be kept open, so that the biogas can be continuously supplied to the biogas storage tank 19.
  • the first on-off valve 22 is closed, the second on-off valve 24, the sixth on-off valve 33 and the third on-off valve 28 are opened, and the system is in a biogas combustion power generation operation state.
  • the biogas compression pump 18 sucks the biogas in the biogas storage tank 19 into the biogas burner 16 for combustion, and heats the steam superheater 11 to heat up, and the biogas regulating valve 27 can control the size of the biogas combustion flame to form a high temperature and high pressure.
  • the steam is adjusted to the rated pressure and temperature by the steam regulating valve 23, it is sent to the steam turbine unit 2 for power generation.
  • the steam after the work is cooled by the condenser 5 to a normal-pressure low-temperature water of about 40 ° C, and is sent to the deaerator 6 to remove the dissolved oxygen in the water, and then sent to the process water preheater 12 by the feed water pump 7 to absorb the waste heat. Finally, it is returned to the steam superheater 11 through the sixth switching valve 33 to start the next cycle.
  • the biogas and soft water replenishment process is the same as above.
  • the heat conduction medium in the tower top solar boiler is water, and no additional heat exchange equipment is needed, and the water is directly vaporized into high temperature and high pressure steam to work on the steam turbine unit, and the structure is simple and the cost is low.
  • the solar energy and biogas energy complementary power generation equipment shown in Fig. 2 has the same structure as the solar energy and biogas energy complementary power generation equipment shown in Fig. 1, except that the solar heat collecting device in Fig. 2 is slightly changed, and it is composed of several sets of solar vacuum.
  • the heat collecting tube 13' is composed of a matching grooved parabolic mirror 14', and the output end of the solar vacuum heat collecting tube 13' is connected to the input end of the steam superheater 11 through the first switching valve 22, and the input of the solar vacuum heat collecting tube 13' The end is connected to the output of the process water preheater 12.
  • the working processes of these two types of solar energy and biogas complementary power generation equipment are basically the same, and will not be described here.
  • the solar energy and biogas energy complementary power generation equipment shown in FIG. 3 is mainly composed of a solar heat collecting device, a biogas generating device 20, a gas water separator 31, a desulfurization decarbonization tower 32, a biogas storage tank 19, a biogas boiler 10, and a steam turbine unit 2.
  • steam The generator 1, the condenser 5, the deaerator 6, the feed water pump 7, the soft water storage tank 9, and the make-up water pump 8 linked by the turbine unit 2 are combined by a pipeline and a valve.
  • a biogas burner 16, a steam superheater 11 and a process water preheater 12 are installed in the biogas boiler 10.
  • the valve includes first to fifth on-off valves 22, 24, 28, 26, 21, a seventh on-off valve 29, and an emergency on-off valve 30 for controlling the on and off of the pipeline; the steam regulating valve 23, the water supply regulating valve 25, A biogas regulating valve 27 is used to regulate the flow rate of the corresponding fluid.
  • the solar heat collecting device shown in Fig. 3 comprises a tower top solar boiler 13 and a plurality of matching day-end mirrors 14 which can track the sun during the day to concentrate the sunlight to the heat collecting tubes of the solar boiler 13. on.
  • the heat collecting tube output end of the tower top solar boiler 13 is connected to the heat medium inlet of the heat storage heat exchanger 15 through the first switching valve 22, and the heat medium outlet of the heat storage heat exchanger 15 passes through the hot liquid pump 17 and the tower top solar boiler 13
  • the heat collecting tube inputs are connected.
  • the heat medium is mixed with biphenyl and diphenyl ether, and is filled in the heat storage heat exchanger 15 provided with the heat insulation layer, and the heat absorption and temperature rise can reach about 40 CTC, which is sufficient for heat exchange to generate high temperature and high pressure steam.
  • the steam output end of the heat storage heat exchanger 15 is connected to the input end of the steam superheater 11 via a seventh switching valve 29, and the output end of the steam superheater 11 is connected to the high pressure steam inlet 3 of the steam turbine unit 2 via a steam regulating valve 23, and A pressure gauge P and a thermometer T are installed on the pipeline at the high pressure steam inlet 3 of the steam turbine unit 2 to visually display the pressure and temperature parameters of the steam.
  • the low pressure steam outlet 4 of the steam turbine unit 2 described above is connected to the input end of the condenser 5, and the output end of the condenser 5 is connected to the input end of the deaerator 6.
  • the water outlet of the soft water storage tank 9 is connected to the water supply port of the deaerator 6 through the makeup water pump 8, and the fourth switching valve 26 is disposed on the pipeline between the water outlet of the soft water storage tank 9 and the water supply port of the deaerator 6. To control the opening and closing of the water supply pipe and the amount of water.
  • the output end of the deaerator 6 is connected to the input end of the feed water pump 7, and the output end of the feed water pump 7 is connected to the input end of the process water preheater 12 through the second on-off valve 24 and the feed water regulating valve 25, the process water preheater
  • the output of 12 is connected to the circulating water input of the heat storage heat exchanger 15 to form a circulation loop for the steam of the steam turbine unit 2.
  • the biogas outlet of the biogas generating device 20 is connected to the input end of the gas water separator 31 through the fifth switching valve 21, and the output end of the gas water separator 31 is connected to the input end of the desulfurization decarbonization tower 32, and the desulfurization decarbonization tower 32 is connected.
  • the output is connected to the inlet of the biogas storage tank 19, and the outlet of the biogas storage tank 19 is connected to the biogas burner 16 via a biogas compression pump 18.
  • the third on-off valve 28 and the biogas regulating valve 27 are disposed on the pipeline between the outlet of the biogas storage tank 19 and the biogas burner 16 to regulate the on and off of the biogas, and thereby adjust the size of the flame in the biogas burner 16.
  • the emergency switch valve 30 connected to the outside is disposed at the steam output end of the heat storage heat exchanger 15 to cooperate with other on-off valves in the event of a sudden failure, and the protection device is safely shut down.
  • the working process of Embodiment 3 is as follows: When there is sunlight during the day, the first on-off valve 22 and the second on-off valve 24 are opened, and the system is in a solar-heat collecting power generation operation state.
  • the day-to-day mirror 14 tracks the sunlight, and collects the sunlight heat energy on the heat collecting tube of the tower top solar boiler 13, so that the heat medium biphenyl and diphenyl ether mixture absorbs heat and heats up, and the high temperature biphenyl around 40 CTC And the diphenyl ether mixture enters the heat storage heat exchanger 15 through the first switching valve 22, and exchanges heat with the circulating water in the other line in the heat storage heat exchanger 15, the mixed liquid of biphenyl and diphenyl ether The temperature is gradually reduced, and has been reduced to about 245 ° C from the heat storage heat exchanger 15, and then returned to the heat collecting tube of the tower top solar boiler 13 by the hot liquid pump 17, and the next round of absorption of solar energy is started.
  • the circulating water in the heat storage heat exchanger 15 exchanges heat with the high temperature biphenyl and diphenyl ether mixture, and is heated and pressurized, and flows into the steam superheater 11 through the seventh on-off valve 29 to form high temperature and high pressure steam.
  • the high temperature and high pressure steam is then adjusted to the rated pressure and temperature by the steam regulating valve 23, and then sent to the steam turbine unit 2 for power generation.
  • the steam after the work is cooled by the condenser 5 to a normal-pressure low-temperature water of about 40 ° C, and is sent to the deaerator 6 to remove the dissolved oxygen in the water, and then sent to the process water preheater 12 by the feed water pump 7 to absorb the waste heat.
  • the surface water or well water collected separately is initially purified, and then the calcium and magnesium ions are removed from the chemical water treatment workshop and sent to the soft water storage tank 9 for use.
  • the soft water is sucked by the make-up water pump 8, and the flow rate is controlled by the fourth on-off valve 26, and is supplied to the deaerator 6 to compensate for the amount of water loss.
  • the third on-off valve 28 is opened, and the biogas in the biogas storage tank 19 is sucked into the biogas burner 16 by the biogas compression pump 18, and the heat energy generated by the biogas combustion is applied to the steam superheater 11, further Heat the steam to compensate for the effects of insufficient solar energy.
  • the biogas control valve 27 can be used to control the size of the biogas combustion flame, thereby controlling the temperature and pressure of the steam in the steam superheater to achieve the rated parameters required for the steam turbine unit 2 to generate electricity.
  • the fifth on-off valve 21 is opened, and the biogas generated by the biogas generating device 20 is treated by the gas-water separator 31 and the desulfurization and decarbonization tower 32, and then input into the biogas storage tank 19 for use.
  • the pipeline between the biogas generating device 20 and the biogas storage tank 19 can be kept open, so that the biogas can be continuously supplied to the biogas storage tank 19.
  • the first on-off valve 22 is closed, the second on-off valve 24, the seventh on-off valve 29 and the third on-off valve 28 are opened, and the system is in a biogas combustion power generation operation state.
  • the biogas compression pump 18 sucks the biogas in the biogas storage tank 19 into the biogas burner 16 for combustion, and heats the steam superheater 11 to heat up, and the biogas regulating valve 27 can control the size of the biogas combustion flame to form a high temperature and high pressure.
  • the steam is adjusted to the rated pressure and temperature by the steam regulating valve 23, it is sent to the steam turbine unit 2 for power generation.
  • the steam after work is cooled by the condenser 5 to a normal pressure of about 40 ° C
  • the low-temperature water is sent to the deaerator 6 to remove the dissolved oxygen in the water, and then sent to the process water preheater 12 by the feed water pump 7 to absorb the residual heat, and finally passes through the heat storage heat exchanger 15 and the seventh on-off valve 29 in turn.
  • the next cycle begins.
  • biogas is burned to generate electricity, the biogas and soft water replenishment process is the same as above.
  • the heat transfer medium in the top solar boiler is a mixed liquid of biphenyl and diphenyl ether, and the heating temperature can reach 40 CTC.
  • the high temperature biphenyl and diphenyl ether mixture which absorbs solar energy transfers heat to the water through the heat storage heat exchanger, and the water is vaporized into high temperature and high pressure steam to work on the steam turbine unit, and the operation is stable, safe and reliable.
  • the solar energy and biogas energy complementary power generation equipment shown in Fig. 4 has the same structure as the solar energy and biogas energy complementary power generation equipment shown in Fig. 3, except that the solar heat collecting device in Fig. 4 is slightly changed, and it consists of several sets of solar vacuum.
  • the heat collecting tube 13' is composed of a matching grooved parabolic mirror 14', and the output end of the solar vacuum heat collecting tube 13' is connected to the heat medium inlet of the heat storage heat exchanger 15 through the first switching valve 22, and the solar vacuum heat collecting tube 13
  • the input of ' is connected to the heat medium outlet of the heat storage heat exchanger 15 through the hydrothermal pump 17.
  • the working processes of these two types of solar energy and biogas complementary power generation equipment are also basically the same, and will not be described here.

Abstract

L'invention concerne un appareil de production d'énergie complémentaire en provenance d'énergie solaire et d'énergie à base de méthane comportant des dispositifs de collecte de chaleur d'énergie solaire (13, 14), un réservoir de stockage de méthane (19), une chaudière de méthane (10), un turbogroupe (2) et une génératrice (1). Une chambre de combustion de méthane (16), un surchauffeur de vapeur (11) et un préchauffeur d'eau d'alimentation (12) sont disposés dans la chaudière de méthane ; les dispositifs de collecte de chaleur d'énergie solaire (13, 14) et la chambre de combustion de méthane (16) peuvent chauffer la vapeur dans le surchauffeur de vapeur (11) simultanément ou séparément ; une extrémité de sortie du surchauffeur de vapeur (11) est raccordée à une admission de vapeur haute pression (3) du turbogroupe (2) ; une sortie de vapeur basse pression (4) du turbogroupe (2) est raccordée au préchauffeur d'eau d'alimentation (12) par un condensateur (5), un désaérateur (6) et une pompe d'alimentation en eau (7) tour à tour ; l'eau de circulation sortant du préchauffeur d'eau d'alimentation (12) est renvoyée au niveau du surchauffeur de vapeur (11) après avoir été chauffée par les dispositifs de collecte de chaleur d'énergie solaire (13, 14). Cet appareil ne décharge ni dioxyde de soufre ni dioxyde de carbone, peut stabiliser l'impact du changement de temps sur l'énergie solaire et peut changer de manière pratique le mode de fonctionnement du turbogroupe ; par conséquent, la génératrice peut produire de l'énergie 24 heures sur 24 toute la journée de jour comme de nuit, que le temps soit ensoleillé ou couvert.
PCT/CN2012/083103 2011-12-12 2012-10-17 Appareil de production d'énergie complémentaire en provenance d'énergie solaire et d'énergie à base de méthane WO2013086894A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201120515643.1 2011-12-12
CN2011104119181A CN102493931A (zh) 2011-12-12 2011-12-12 太阳能与沼气能互补发电设备
CN201110411918.1 2011-12-12
CN 201120515643 CN202326049U (zh) 2011-12-12 2011-12-12 太阳能与沼气能互补发电设备

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WO2013086894A1 true WO2013086894A1 (fr) 2013-06-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2906462Y (zh) * 2006-05-10 2007-05-30 靳广智 太阳能热发电装置
CN101592136A (zh) * 2009-05-22 2009-12-02 西安交通大学 考虑余热利用的太阳能热力发电装置
DE102009051845A1 (de) * 2009-10-29 2011-09-15 Sebastian Bühler Solarthermisches Hybridkraftwerk mit Klärschlammfeuerung und Meerwasserentsalzung
CN102493931A (zh) * 2011-12-12 2012-06-13 武汉凯迪工程技术研究总院有限公司 太阳能与沼气能互补发电设备
CN202326049U (zh) * 2011-12-12 2012-07-11 武汉凯迪工程技术研究总院有限公司 太阳能与沼气能互补发电设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2906462Y (zh) * 2006-05-10 2007-05-30 靳广智 太阳能热发电装置
CN101592136A (zh) * 2009-05-22 2009-12-02 西安交通大学 考虑余热利用的太阳能热力发电装置
DE102009051845A1 (de) * 2009-10-29 2011-09-15 Sebastian Bühler Solarthermisches Hybridkraftwerk mit Klärschlammfeuerung und Meerwasserentsalzung
CN102493931A (zh) * 2011-12-12 2012-06-13 武汉凯迪工程技术研究总院有限公司 太阳能与沼气能互补发电设备
CN202326049U (zh) * 2011-12-12 2012-07-11 武汉凯迪工程技术研究总院有限公司 太阳能与沼气能互补发电设备

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