CN205825455U - A kind of solar energy assisted coal fired unit hybrid power system run under multi-mode - Google Patents

A kind of solar energy assisted coal fired unit hybrid power system run under multi-mode Download PDF

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Publication number
CN205825455U
CN205825455U CN201620409702.XU CN201620409702U CN205825455U CN 205825455 U CN205825455 U CN 205825455U CN 201620409702 U CN201620409702 U CN 201620409702U CN 205825455 U CN205825455 U CN 205825455U
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China
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pressure
control valve
solar energy
heaters
hybrid power
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Expired - Fee Related
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CN201620409702.XU
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Chinese (zh)
Inventor
徐钢
郑磊
董伟
刘琦
刘文毅
杨志平
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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
    • Y02E10/44Heat exchange systems

Abstract

The utility model discloses and belong to the solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode in energy-saving and emission-reduction field.This system mainly includes the part compositions such as boiler, steam turbine, condenser, heat regenerative system and solar thermal collection system.Coal-burning power plant's steam generating system is connected with solar thermal collection system by oil water heat exchange device by coal unit, utilizes solar thermal collection system heating feed pump outlet feedwater, make feed temperature reach former operation or design parameter.This utility model is by utilizing solar thermal collection system heating feed pump outlet feedwater, decrease bleeding of high-pressure heater heat regenerative system, reduce partial fuel coal consumption, improve comprehensive energy utilization ratio, have preferable technical and economic performance, provide important technology support for solar energy with coal fired power plant complemental power-generation.

Description

A kind of solar energy assisted coal fired unit hybrid power system run under multi-mode
Technical field
This utility model belongs to solar energy heat utilization field, particularly to the solar energy auxiliary combustion run under a kind of multi-mode Coal unit hybrid power system.
Background technology
Along with energy supply constant tension, carbon emission reduction and environmental protection pressure are increasing, the energy and environmental problem are still The significant problem that World Economics sustainable development is faced, this green energy resource of solar energy, natural energy resources will become following low The strategic objective of carbon epoch energy development.At present, solar energy thermal-power-generating is derivative and that go out solar energy is complementary with fossil-fuelled power plant Generating is one of technology that is the most ripe and that promote.Solar energy coal complementation power station refer to by by solar heat with Coal unit therrmodynamic system passes through the integrated of multi-form according to different heat demands, it is achieved solar energy side is combined with coal unit side Run, it is achieved comprehensive utilization of energy, reduction fire coal consume.
Currently, commonly used the bleeding from steam-turbine unit of coal unit enters high-pressure heater heating feedwater, this operation Mode easily causes the problems such as the waste of the increase of coal-fired consumption, high-grade energy.The utility model proposes one and utilize the sun The electricity generation system of heat regenerative system can be assisted, can be according to the impact of different ambient temperatures, it is achieved by heat regenerative system feed temperature Reach former operation or design parameter, the height of the high-quality being so replaced add draw gas can continue steam turbine generator do work, fill The high-grade energy of power plant of point Appropriate application, effectively reduces fire coal and consumes and improve unit efficiency, have important theory and Practical significance.
Summary of the invention
The purpose of this utility model is that big, the energy dissipation of the energy consumption existing for the coal-burning power plant for existing maturation etc. is asked Topic, bleeds heating feedwater by increasing solar thermal collection system auxiliary turbine, has been largely fulfilled height and has added to draw gas and continue Continue in turbine generating system, continue acting, improve the utilization of high-grade energy, reduce coal-fired consumption, while reducing discharging Also ensure that generating efficiency.
For reaching above-mentioned purpose, this utility model is by the following technical solutions.
Under a kind of multi-mode run solar energy assisted coal fired unit hybrid power system, this system mainly include boiler, Steam turbine high-pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder, electromotor, condenser, heat regenerative system, oil water heat exchange device and solar energy heat-collection field;Institute The boiler stated, steam turbine high-pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder, electromotor are sequentially connected;Condenser and condensation are passed through in low pressure (LP) cylinder aerofluxus Water pump is connected;Described condensation water pass sequentially through No. eight low-pressure heaters, No. seven low-pressure heaters, No. six low-pressure heaters, five Number low-pressure heater is connected with oxygen-eliminating device;Described oxygen-eliminating device water outlet is after feed pump pressurizes, through the 6th control valve successively Flowing through No. three high-pressure heaters, No. two high-pressure heaters, high-pressure heaters, final and boiler is connected to form closed circuit, After wherein steam turbine different parameters draws gas and enters heaters at different levels, the hydrophobic mode taking to flow automatically step by step of heat regenerative system;Described The conduction oil gateway of oil water heat exchange device be connected to form oil side loop respectively with solar energy heat-collection field;Described oil water heat exchange device Water side entrance by the 5th control valve with feedwater delivery side of pump be connected, its water side outlet respectively pass through the first control valve and second Control valve is connected with the outlet of No. two high-pressure heaters and a high-pressure heater;One section of extraction opening of described steam turbine high-pressure cylinder Being connected by the 3rd control valve with a high-pressure heater, two-stage nitration extraction opening and No. two high-pressure heaters are by the 4th control valve phase Even.
A described feed pump water outlet part passes sequentially through three high-pressure heaters by control valve, and another part passes through Control valve is connected with the water inlet of oil water heat exchange device, and oil water heat exchange device outlet is respectively by the first control valve and the second control valve Outlet with No. two high-pressure heaters and a high-pressure heater is connected.
One section of extraction opening of described steam turbine high-pressure cylinder and a high-pressure heater are connected by the 3rd control valve, and two-stage nitration is taken out Steam ports and No. two high-pressure heaters are connected by the 4th control valve, and the amount of drawing gas entering bleeder heater can be adjusted by control valve Joint.
Described solar energy heat-collection field is groove type solar collecting system, and the conduction oil temperature of its outlet is up to 350 DEG C.
Described hybrid power system can be according to the heat situation obtained during solar energy heating Strength Changes in various modes Lower operation.
This utility model has the following advantages and beneficial effect: when sunny or not enough, utilize solar energy heating to Water, makes feed temperature reach former operation or design parameter, and the height of the high-quality being so replaced adds to draw gas and can continue at steamer Electromotor does work, the high-grade energy of power plant of abundant Appropriate application, effectively reduces fire coal and consumes and improve unit efficiency, it is achieved Solar energy and fossil energy complementary operation, provide a Tiao Xin road for conventional thermoelectricity reducing energy consumption.
Accompanying drawing explanation
Fig. 1 is the solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode.
In figure: 1-boiler;2-steam turbine high-pressure cylinder;3-Steam Turbine Through IP Admission;4-low pressure (LP) cylinder;5-electromotor;6 condensings Device;7-condensate pump;8 No. eight low-pressure regenerators;9 No. seven low-pressure regenerators;10 No. six low-pressure regenerators;11 5 Number low-pressure heater;12 oxygen-eliminating devices;13 feed pumps;14 No. three high-pressure extraction devices;15 No. two high-pressure extraction devices;16 1 Number high-pressure heater;17 oil water heat exchange devices;18 groove type solar heat collecting field;19 second control valves;20 first control Valve;21-the 5th control valve;22 three-control valves;23 the 4th control valves;24-the 6th control valve.
Detailed description of the invention
This utility model provides the two-stage brown coal drying system of a kind of integrated flue gas and steam drying, below in conjunction with the accompanying drawings With detailed description of the invention, native system operation principle is described further.
Fig. 1 is the solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode.
Under a kind of multi-mode run solar energy assisted coal fired unit hybrid power system, this system mainly include boiler, Steam turbine high-pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder, electromotor, condenser, regenerator, electromotor, control valve, solar energy heat-collection field, oil Water-to-water heat exchanger.It is characterized in that, boiler 1, steam turbine high-pressure cylinder 2, intermediate pressure cylinder 3, low pressure (LP) cylinder 4, electromotor 5 are sequentially connected;Low pressure Cylinder 4 aerofluxus is connected with condensate pump 7 by condenser 6;It is low that described condensation water passes sequentially through No. eight low-pressure heaters 8, seven Pressure heater 10, No. five low-pressure heaters 11 of 9, No. six low-pressure heaters are connected with oxygen-eliminating device 12;Described oxygen-eliminating device 12 exports Water through feed pump 13 pressurize after, through the 6th control valve 24 flow successively through 14, No. two high-pressure heaters 15 of No. three high-pressure heaters, A number high-pressure heater 16, final and boiler 1 is connected to form closed circuit, and wherein steam turbine different parameters draws gas, and entrance is at different levels to be added After hot device, the hydrophobic mode taking to flow automatically step by step of heat regenerative system;The conduction oil gateway of described oil water heat exchange device 17 is respectively It is connected to form oil side loop with solar energy heat-collection field 18;The 5th control valve 21 is passed through in the water side entrance of described oil water heat exchange device 17 Outlet with feed pump 13 is connected, and its water side outlet is added with No. two high pressure by the first control valve 20 and the second control valve 19 respectively Hot device 15 is connected with the outlet of a high-pressure heater 16;2 one sections of extraction openings of described steam turbine high-pressure cylinder and a high pressure add Hot device 16 is connected by the 3rd control valve 22, and two-stage nitration extraction opening and No. two high-pressure heaters 15 are connected by the 4th control valve 23.
A described feed pump 13 water outlet part passes sequentially through three high-pressure heaters 14,15,16 by control valve 24, Another part is connected with the water inlet of oil water heat exchange device 17 by control valve 21, and oil water heat exchange device 17 outlet is respectively by first Control valve 20 is connected with the outlet of the second control valve 19 with No. two high-pressure heaters 15 and a high-pressure heater 16.
2 one sections of extraction openings of described steam turbine high-pressure cylinder and a high-pressure heater 16 are connected by the 3rd control valve 22, Two-stage nitration extraction opening and No. two high-pressure heaters 15 are connected by the 4th control valve 23, and the amount of drawing gas entering bleeder heater can be passed through Control valve regulates.
Described solar energy heat-collection field 18 is groove type solar collecting system, and the conduction oil temperature of its outlet is up to 350 DEG C.
Described hybrid power system can be according to the heat situation obtained during solar energy heating Strength Changes in various modes Lower operation.
Its work process is: when sunny (fine day), is provided for oil water heat exchange device by groove type solar heat collecting field Heat, closes the first control valve, the 3rd control valve, the 4th control valve, the 6th control valve, opens the second control valve, the 5th control Valve, is made feedwater enter a high-pressure heater after being absorbed heat by oil water heat exchange device and exports;During sunlight not enough (cloudy), pass through slot type Solar energy heat-collection field is that oil water heat exchange device provides heat, closes the second control valve, the 4th control valve, the 6th control valve, opens the One control valve, the 5th control valve, the 3rd control valve, made feedwater enter No. two high-pressure heaters after being absorbed heat by oil water heat exchange device and go out Mouthful, then by entering boiler after a high-pressure heater heating;When there is no sunlight, close the 5th control valve, open the 6th control Valve, the 3rd control valve, the 4th control valve, utilize height to add heating feed pump outlet feedwater of bleeding, eventually enter into boiler.

Claims (5)

1. the solar energy assisted coal fired unit hybrid power system run under a multi-mode, it is characterised in that this system is main Including boiler (1), steam turbine high-pressure cylinder (2), intermediate pressure cylinder (3), low pressure (LP) cylinder (4), electromotor (5), condenser (6), heat regenerative system, Oil water heat exchange device (17) and solar energy heat-collection field (18);Described boiler (1), steam turbine high-pressure cylinder (2), intermediate pressure cylinder (3), low pressure Cylinder (4), electromotor (5) are sequentially connected;Low pressure (LP) cylinder (4) aerofluxus is connected with condensate pump (7) by condenser (6);Described is solidifying Bear water and pass sequentially through No. eight low-pressure heaters (8), No. seven low-pressure heaters (9), No. six low-pressure heaters (10), No. five low pressure add Hot device (11) is connected with oxygen-eliminating device (12);Described oxygen-eliminating device (12) water outlet is after feed pump (13) pressurizes, through the 6th control Valve processed (24) flows successively through No. three high-pressure heaters (14), No. two high-pressure heaters (15), high-pressure heaters (16), finally It is connected to form closed circuit with boiler (1), after wherein steam turbine different parameters draws gas and enters heaters at different levels, dredging of heat regenerative system Hydromining takes the mode flow automatically step by step;The conduction oil gateway of described oil water heat exchange device (17) respectively with solar energy heat-collection field (18) It is connected to form oil side loop;The water side entrance of described oil water heat exchange device (17) is by the 5th control valve (21) and feed pump (13) Outlet be connected, its water side outlet is respectively by the first control valve (20) and the second control valve (19) and No. two high-pressure heaters (15) outlet of with number high-pressure heater (16) is connected;(2) one sections of extraction openings of described steam turbine high-pressure cylinder and a high pressure Heater (16) is connected by the 3rd control valve (22), and two-stage nitration extraction opening and No. two high-pressure heaters (15) are by the 4th control valve (23) it is connected.
The solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode the most according to claim 1, its Being characterised by, described feed pump (13) water outlet part passes sequentially through three high-pressure heaters by the 6th control valve (24) (14,15,16), another part is connected with the water inlet of oil water heat exchange device (17) by the 5th control valve (21), oil water heat exchange device (17) outlet is high with No. two high-pressure heaters (15) and No. one by the first control valve (20) and the second control valve (19) respectively The outlet of pressure heater (16) is connected.
The solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode the most according to claim 1, its Being characterised by, (2) one sections of extraction openings of described steam turbine high-pressure cylinder and a high-pressure heater (16) are by the 3rd control valve (22) being connected, two-stage nitration extraction opening and No. two high-pressure heaters (15) are connected by the 4th control valve (23), enter bleeder heater The amount of drawing gas can be regulated by control valve.
The solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode the most according to claim 1, its Being characterised by, described solar energy heat-collection field (18) is groove type solar collecting system, and the conduction oil temperature of its outlet is up to 350 ℃。
The solar energy assisted coal fired unit hybrid power system run under a kind of multi-mode, it is special Levying and be, described hybrid power system can be according to the heat situation obtained during solar energy heating Strength Changes under various modes Run.
CN201620409702.XU 2016-05-09 2016-05-09 A kind of solar energy assisted coal fired unit hybrid power system run under multi-mode Expired - Fee Related CN205825455U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523053A (en) * 2016-12-26 2017-03-22 王连生 Solar heat and thermal power plant coupling power generation and heat storage energy combination system and realization method
WO2020110473A1 (en) * 2018-11-30 2020-06-04 三菱日立パワーシステムズ株式会社 Boiler system, power generation plant, and boiler system operation method
CN111365698A (en) * 2020-03-16 2020-07-03 华北电力大学 Slot type solar energy and heat supply unit complementary cogeneration system
WO2020181680A1 (en) * 2019-03-13 2020-09-17 西安交通大学 Solar-assisted coal-fired power generation system participating in primary frequency modulation, and control method therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523053A (en) * 2016-12-26 2017-03-22 王连生 Solar heat and thermal power plant coupling power generation and heat storage energy combination system and realization method
CN106523053B (en) * 2016-12-26 2017-10-13 王连生 Solar heat and steam power plant's coupled electricity-generation and hot energy storage combined system and implementation method
WO2020110473A1 (en) * 2018-11-30 2020-06-04 三菱日立パワーシステムズ株式会社 Boiler system, power generation plant, and boiler system operation method
WO2020181680A1 (en) * 2019-03-13 2020-09-17 西安交通大学 Solar-assisted coal-fired power generation system participating in primary frequency modulation, and control method therefor
CN111365698A (en) * 2020-03-16 2020-07-03 华北电力大学 Slot type solar energy and heat supply unit complementary cogeneration system

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Granted publication date: 20161221

Termination date: 20180509