CN203114542U - Organic Rankine cycle combined heat and power generation system with complementary solar energy and biomass energy - Google Patents

Organic Rankine cycle combined heat and power generation system with complementary solar energy and biomass energy Download PDF

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CN203114542U
CN203114542U CN2013200716652U CN201320071665U CN203114542U CN 203114542 U CN203114542 U CN 203114542U CN 2013200716652 U CN2013200716652 U CN 2013200716652U CN 201320071665 U CN201320071665 U CN 201320071665U CN 203114542 U CN203114542 U CN 203114542U
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heat
working medium
organic working
energy
generation
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叶学民
王佳
李春曦
童家麟
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North China Electric Power University
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North China Electric Power University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/133Renewable energy sources, e.g. sunlight

Abstract

An organic Rankine cycle combined heat and power generation system with complementary solar energy and biomass energy comprises an organic working medium evaporimeter, a circulation pump, a circulating fluidized bed biomass gasifier, a paraboloid slot type solar thermal collector, a steam turbine, a generator, a waste heat exchanger and a condenser. The circulating fluidized bed biomass gasifier is coupled with the paraboloid slot type solar thermal collector in a parallel mode. According to the connecting relation of all the parts of the system, low-temperature heat exchange fluid flowing out of the organic working medium evaporimeter passes the circulation pump and then is divided into two parts, one part flows to the circulating fluidized bed biomass gasifier to absorb heat, and the other part is heated through the paraboloid slot type solar thermal collector. After the heat exchange fluid which is heated to reach a set parameter of an outlet of the biomass gasifier, the heat exchange fluid enters the organic working medium evaporimeter to carry out heat release on organic working media, after the organic working media which are heated reach a nominal parameter, the organic working media enters the steam turbine to work, and accordingly the generator is driven to generate electricity. Heat release is conducted on exhaust of the steam turbine through the waste heat exchanger, then the exhaust returns to the organic working medium evaporimeter after being condensed through the condenser, and the whole thermodynamic cycle is completed.

Description

Solar energy and biological energy complementary organic Rankine circulating thermoelectric co-generation system
Technical field
The utility model relates to solar energy and the biomass energy integrated complementary heat and power system based on the organic Rankine circulation, be particularly related to paraboloid trough type solar heat-collector and adopt coupled modes in parallel with the recirculating fluidized bed biomass gasifying furnace, belong to field of renewable energy resource utilization.
Background technique
In China, fired power generating unit is being born about 80% generated energy, it is nearly 50% that the annual coal that consumes accounts for total flow, makes China face severe resource environment problem based on the energy resource structure of coal, so to seek the new alternative energy be the energy strategy problem that needs to be resolved hurrily present stage.In recent years, new energy are paid close attention to because its advantage such as renewable, pollution-free has caused widely, and China is readjusted the energy structure, promotes renewable energy utilization and build low-carbon (LC) society to produce significant meaning.
China has very abundant solar energy resources, and top approximately can accept 50 * 10 every year 18The solar energy of kJ, Tibet are the abundantest areas of solar energy, and a year radiant quantity reaches 9210MJ/m 2, be only second to Sahara Desert, occupy the second place of the world.The utilization of solar energy at present mainly contains photovoltaic and 2 kinds of modes of photo-thermal, but the investment of great number and cost of electricity-generating have seriously hindered its development, predict according to International Energy Agency, solar energy thermal-power-generating is that cost of electricity-generating is hopeful the technology near the coal fired power generation unit most, existing 9 solar heat power generation systems put into effect in the U.S., its total installation of generating capacity reaches 354MW, and the maximum electric motor power of single system reaches 80MW, is maximum in the world solar heat power generation system.Studies show that, modularization slot type organic rankine cycle system may be the most effective solar energy thermal-power-generating technology of risk minimum and investment repayment, adopt the paraboloid trough type solar heat-collector live steam to produce system and can make fluid properties reach 400 ℃, have bright development prospect.
Biomass energy is the global the fourth-largest energy after coal, oil, rock gas, and according to statistics, China's biomass resource productive potentialities can reach 65,000,000,000 tons/year, amount to 3,300,000,000 tons of standard coals, but utilize degree to have only about 2% at present, but potentiality to be exploited is huge.In the biomass power generation field, the Rankine cycle ratio employing water vapor that adopts organic working medium is that the Lang Ken circular list of working medium reveals higher performance, simultaneously because its CO 2Clean discharge amount is approximately 0, has good environmental benefit, and China is reduced discharging CO 2Significant.
At present, solar energy and biomass energy integrated complementary power generation system mainly have the following disadvantages:
One, for the selection of solar energy and biological energy complementary power generation system cycle fluid, China's utility model patent: the combined thermal power generating system of a kind of solar energy and biomass energy integrated complementary, the patent No. is: 201019026107.2, it is Rankine cycle working medium that this patent adopts water, the boiling point of water and gasification latent heat are all than organic working medium height, therefore the working strength to solar thermal collector and biomass energy gasification device requires height, systematic comparison complexity.
Two, solar energy and biomass energy are taked coupled modes rather than the parallel connection of connecting, China's utility model patent: low-temperature solar energy-biomass energy cogeneration system, the patent No. is: 201010237550.7, solar thermal collector is chosen vacuum flat-plate in this patent, heat-transfer working medium is sent into after the vacuum flat-plate solar thermal collector preheating and is continued heat absorption in the biomass gasifying furnace, adopt the integration mode of series connection because of both, the situation system that breaks down at biomass gasifying furnace can't normally move, and Security is not high.
The model utility content
The utility model comprehensive utilization solar energy and two kinds of new energy of biomass energy carry out complemental power-generation, can effectively remedy the defective in the background technique, adopt paraboloid trough type solar heat-collector, and carry out coupled modes in parallel with the recirculating fluidized bed biomass gasifying furnace, this integration mode can guarantee that system still can normally move the Safety performance height when recirculating fluidized bed biomass gasifying furnace or paraboloid trough type solar heat-collector break down.Adopt organic substance as the working medium of Rankine cycle in addition, low because of its boiling point, latent heat is little, thus can effectively reduce the working strength of solar thermal collector and recirculating fluidized bed biomass gasifying furnace.In addition, China has very abundant solar energy and biomass energy resource, and its CO 2Clean discharge amount is approximately 0, so the utility model can be used as an innovation that promotes that new energy utilize on a large scale and readjust the energy structure.
The utility model solar energy and biological energy complementary organic Rankine circulating thermoelectric co-generation system comprise: the organic working medium vaporizer, recycle pump, the recirculating fluidized bed biomass gasifying furnace, paraboloid trough type solar heat-collector, steam turbine, generator, afterheat heat exchanger, condenser, described recirculating fluidized bed biomass gasifying furnace is taked coupled modes in parallel with paraboloid trough type solar heat-collector, the annexation of these each parts of system is as follows: the low-temperature heat exchange fluid that flows out from the organic working medium vaporizer is behind recycle pump, be divided into two-part, a part is absorbed heat in the recirculating fluidized bed biomass gasifying furnace, another part heats through paraboloid trough type solar heat-collector, enter the organic working medium vaporizer reach the setup parameter of biomass gasifying furnace outlet when heated heat exchanging fluid after, therein organic working medium is carried out heat release, heated organic working medium is done work to steam turbine after reaching nominal parameter, thereby driving generator for electricity generation, the exhaust of steam turbine is through the afterheat heat exchanger heat release, after condenser condenses, return the organic working medium vaporizer again, finish whole thermodynamic cycle.
Further, described low-temperature heat exchange fluid is divided into two-part through the distributing T-pipe modulating valve behind recycle pump.
Further, described paraboloid trough type solar heat-collector adopts live steam to produce system.
Further, heated heat exchanging fluid reaches setup parameter and is mixed in the organic working medium vaporizer by the distributing T-pipe modulating valve.
Further, described afterheat heat exchanger liberated heat is recycled the feedwater absorption of water pump.
Further, described organic working medium is chosen R245FA(1, and 1,1,3,3-pentafluoropropane), R365MFC(1,1,1,3,3-3-pentafluorobutane), R245CA(1,1,2,2,3-pentafluoropropane), pentane, R410A(pentafluoroethane), the R600A(isobutane), the R32(difluoromethane), the mixture of n-hexane and toluene simple substance or its combination in any.
Further, described low-temperature heat exchange fluid is water.
The utility model comprehensive utilization solar energy, two kinds of new energy of biomass energy is as the thermal source of organic working medium vaporizer, can promote new energy to utilize on a large scale, readjust the energy structure and develops low-carbon economy, mainly contains the advantage of following two aspects:
One, the recirculating fluidized bed biomass gasifying furnace is taked coupled modes in parallel with paraboloid trough type solar heat-collector, radiation condition is preferably under the situation by day, heat exchanging fluid mainly is to heat through paraboloid trough type solar heat-collector, paraboloid trough type solar heat-collector belongs to middle temperature solar heat utilization scope, and, technology maturation low because of cost obtained to use comparatively widely.Its outlet steam temperature can reach 400 ℃, can satisfy the needed evaporating temperature of organic working medium fully, therefore following of the situation that breaks down at recirculating fluidized bed biomass gasifying furnace 4 needs to cut off the heat exchanging fluid that enters biomass gasifying furnace from the distributing T-pipe modulating valve, system just still can normally move, with respect to the coupled modes that biomass gasifying furnace is connected with solar thermal collector, integration mode Security in parallel is higher.
Two, traditional Rankine cycle employing water is cycle fluid, and it is cycle fluid that organic substance is then adopted in the circulation of the utility model organic Rankine.With the water ratio, the boiling point of organic working medium is low, latent heat is little, thereby is more suitable for significantly reducing the working strength of paraboloid trough type solar heat-collector and recirculating fluidized bed biomass gasifying furnace for, low-temperature electricity-generating, is beneficial to security of system stable operation.Consider environmental-protecting performance and the acting ability of organic working medium, organic working medium of the present utility model is chosen the mixture of R245FA, R365MFC, R245CA, pentane, R410A, R600A, R32, n-hexane and 9 kinds of organic working medium simple substance of toluene or its combination in any.
Description of drawings
Fig. 1 is the utility model solar energy and biological energy complementary organic Rankine circulating thermoelectric co-generation system schematic representation.
Among the figure: 1 organic working medium vaporizer, 2 recycle pumps, 3 distributing T-pipe modulating valve, 4 recirculating fluidized bed biomass gasifying furnaces, 5 paraboloid trough type solar heat-collectors, 6 distributing T-pipe modulating valve, 7 steam turbine, 8 generators, 9 afterheat heat exchangers, 10 circulating water pump, 11 condensers.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the utility model solar energy and biological energy complementary organic Rankine circulating thermoelectric co-generation system schematic representation.Described power generation system is by vaporizer, recycle pump, the recirculating fluidized bed biomass gasifying furnace, paraboloid trough type solar heat-collector, steam turbine, generator, afterheat heat exchanger, condenser is formed, the technological process of this system is: the low-temperature heat exchange fluid that flows out from organic working medium vaporizer 1 (can be water, plasma and wet goods medium, it is heat exchanging fluid that the utility model is chosen water) behind recycle pump 2, be two-part in 3 punishment of distributing T-pipe modulating valve, a part is absorbed heat in recirculating fluidized bed biomass gasifying furnace 4, another part is through paraboloid trough type solar heat-collector 5 heating, paraboloid trough type solar heat-collector 5 adopts live steam to produce system, when reaching, mixes at distributing T-pipe modulating valve 6 places after biomass gasifying furnace 4 exports the fluid parameter of setting the fluid through its heating, enter heat release in the organic working medium vaporizer 1 then, organic working medium heat absorption in the organic working medium vaporizer 1 is done work to steam turbine 7 after reaching nominal parameter, thereby drive generator 8 generatings, the exhaust of steam turbine 7 is through afterheat heat exchanger 9 heat releases, hot user's feedwater is absorbed heat in afterheat heat exchanger 9 behind circulating water pump 10, the hot water heating user who produces uniform temperature uses, the exhaust of afterheat heat exchanger 9 is returned organic working medium vaporizer 1 after condenser 11 condensations, finish whole thermodynamic cycle.Recirculating fluidized bed biomass gasifying furnace 4 is taked coupled modes in parallel with paraboloid trough type solar heat-collector 5, solar radiation condition by day is preferably under the situation, can regulate distributing T-pipe modulating valve 3 and increase the heat exchanging fluid flow that enters paraboloid trough type solar heat-collector 5, reduce the heat exchanging fluid flow that enters recirculating fluidized bed biomass gasifying furnace 4, alleviate its working load; Then adjust distributing T-pipe modulating valve 3 at night and make heat exchanging fluid all through recirculating fluidized bed biomass gasifying furnace 4 heating, reach nominal parameter by distributing T-pipe modulating valve 6 in the organic working medium vaporizer 1 to the organic working medium heat release.

Claims (7)

1. a solar energy and biological energy complementary organic Rankine circulating thermoelectric co-generation system, comprise: the organic working medium vaporizer, recycle pump, the recirculating fluidized bed biomass gasifying furnace, paraboloid trough type solar heat-collector, steam turbine, generator, afterheat heat exchanger, condenser, it is characterized in that, described recirculating fluidized bed biomass gasifying furnace is taked coupled modes in parallel with paraboloid trough type solar heat-collector, the annexation of these each parts of system is as follows: the low-temperature heat exchange fluid that flows out from the organic working medium vaporizer is behind recycle pump, be divided into two-part, a part is absorbed heat in the recirculating fluidized bed biomass gasifying furnace, another part heats through paraboloid trough type solar heat-collector, enter the organic working medium vaporizer reach the setup parameter of biomass gasifying furnace outlet when heated heat exchanging fluid after, therein organic working medium is carried out heat release, heated organic working medium is done work to steam turbine after reaching nominal parameter, thereby driving generator for electricity generation, the exhaust of steam turbine is through the afterheat heat exchanger heat release, after condenser condenses, return the organic working medium vaporizer again, finish whole thermodynamic cycle.
2. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that described low-temperature heat exchange fluid is divided into two-part through the distributing T-pipe modulating valve behind recycle pump.
3. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that described paraboloid trough type solar heat-collector adopts live steam to produce system.
4. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that heated heat exchanging fluid reaches setup parameter and is mixed in the organic working medium vaporizer by the distributing T-pipe modulating valve.
5. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that the feedwater that described afterheat heat exchanger liberated heat is recycled water pump absorbs.
6. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that described organic working medium is chosen the mixture of R245FA, R365MFC, R245CA, pentane, R410A, R600A, R32, n-hexane and toluene simple substance or its combination in any.
7. according to the described solar energy of claim 1 and biological energy complementary organic Rankine circulating thermoelectric co-generation system, it is characterized in that described low-temperature heat exchange fluid is water.
CN2013200716652U 2013-02-07 2013-02-07 Organic Rankine cycle combined heat and power generation system with complementary solar energy and biomass energy Expired - Fee Related CN203114542U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147945A (en) * 2013-02-07 2013-06-12 华北电力大学(保定) Solar power and biomass power complementing organic Rankine cycle cogeneration system
CN103410579A (en) * 2013-08-23 2013-11-27 东南大学 Device for improving generating efficiency of organic rankine cycle and working method
CN104673342A (en) * 2015-01-27 2015-06-03 华北电力大学 Low-order coal quality improvement and power generation integrated system based on solar energy and coal gasification combination
CN105464914A (en) * 2015-12-17 2016-04-06 广东五星太阳能股份有限公司 Direct-expansion solar thermal power generation system based on cascade Rankine cycle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147945A (en) * 2013-02-07 2013-06-12 华北电力大学(保定) Solar power and biomass power complementing organic Rankine cycle cogeneration system
CN103147945B (en) * 2013-02-07 2014-12-10 华北电力大学(保定) Solar power and biomass power complementing organic Rankine cycle cogeneration system
CN103410579A (en) * 2013-08-23 2013-11-27 东南大学 Device for improving generating efficiency of organic rankine cycle and working method
CN103410579B (en) * 2013-08-23 2015-08-19 东南大学 A kind of device for improving organic Rankine bottoming cycle generating efficiency and method of work
CN104673342A (en) * 2015-01-27 2015-06-03 华北电力大学 Low-order coal quality improvement and power generation integrated system based on solar energy and coal gasification combination
CN105464914A (en) * 2015-12-17 2016-04-06 广东五星太阳能股份有限公司 Direct-expansion solar thermal power generation system based on cascade Rankine cycle

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