CN102434357A - System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler - Google Patents
System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler Download PDFInfo
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- CN102434357A CN102434357A CN201110323011XA CN201110323011A CN102434357A CN 102434357 A CN102434357 A CN 102434357A CN 201110323011X A CN201110323011X A CN 201110323011XA CN 201110323011 A CN201110323011 A CN 201110323011A CN 102434357 A CN102434357 A CN 102434357A
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention discloses a system for generating power employing condensed water of flue gases in a supercharged oxygen-enriched coal burning boiler, which belongs to the technical field of power generation. The system is composed of a high-pressure water-cooled cyclone dust removal condensation device, an impulse turbine and a power generator; an air inlet of the high-pressure water-cooled cyclone dust removal condensation device is connected with an air preheater outlet in a supercharged combustion furnace cavity discharge flue, while an air outlet of the high-pressure water-cooled cyclone dust removal condensation device is connected with a tail flue; the condensed water discharged from a condensed water outlet of a sedimentation basin in the high-pressure water-cooled cyclone dust removal condensation device drives the impulse turbine through a high pressure water conveying pipeline; and the impulse turbine drives the power generator. According to the system disclosed by the invention, the high pressure flue gases in the supercharged combustion furnace cavity are condensed by the high-pressure water-cooled cyclone dust removal condensation device, the high pressure condensed water is collected and conveyed to the impulse turbine by the high pressure water conveying pipeline, when the condensed water flows through a nozzle of the water turbine, pressure energy of the condensed water is converted into kinetic energy to impulse a water funnel of the water turbine to run the water turbine, and the water turbine drives the power generator to generate power, so that the pressure energy of the condensed water can be utilized to reduce energy waste.
Description
Technical field
The present invention relates to a kind of moisture that can collect in the flue gas that supercharging oxygen enrichment coal fired boiler discharged, and utilize the device of high pressure water of condensation generating, belong to technical field of power generation.
Background technique
The temperature of exhaust fume of traditional coal-fired power station boiler is greatly about 110-140 ℃; The moisture that water vapour that the burning of the moisture that contains in the coal, hydrogen content of coal element produces and burning required air are brought into makes that the volume share of water vapour is approximately 10-15% in the flue gas; Steam partial pressure be 5Kpa to 15Kpa, adiabatic condensation temperature is about and is 45-55 ℃, under about 120 ℃ of temperature of exhaust fume, can't condense; Enter atmosphere with flue gas, do not obtain utilizing.
In the integration power generation system of supercharging oxygen-enriched combusting that with capture CO2 is purpose, burning is all accomplished under the pressure of 6.0-8.0MPa with the overall process that captures CO2, under this pressure; Steam coagulation temperature in the boiler exhaust gas is brought up to about 200 ℃; Make water vapour condense and collection becomes possibility, and water of condensation has the pressure of 5-6MPa, has the acting ability; But this part energy is not effectively utilized at present, causes the waste of the energy.
Summary of the invention
The objective of the invention is to overcome existing technology deficiency, a kind of supercharging oxygen enrichment fire coal boiler fume water of condensation power generation system is provided, to improve rate of energy.
The alleged problem of the present invention realizes with following technical proposals:
A kind of supercharging oxygen enrichment fire coal boiler fume water of condensation power generation system; Form by high pressure water cold type cyclone dust removal condensation device, impulse turbine and generator; Air preheater outlet in the suction port of said high pressure water cold type cyclone dust removal condensation device and the pressurized combustion furnace exhaust road is connected; The air outlet is connected with back-end ductwork, and the water of condensation that the water of condensation outlet of its deposition tank is discharged is through high-pressure hydraulic pipe-line driving impact formula water turbine, and said impulse turbine drives generator.
Above-mentioned supercharging oxygen enrichment fire coal boiler fume water of condensation power generation system, the high-pressure hydraulic pipe-line between high pressure water cold type cyclone dust removal condensation device and the impulse turbine is provided with modulating valve.
The present invention utilizes high pressure water cold type cyclone dust removal condensation device with the high pressure flue gas condensing in the pressurized combustion burner hearth and collect the high pressure water of condensation, adopts high-pressure hydraulic pipe-line that water of condensation is delivered to impulse turbine, when water of condensation is flowed through the water turbine nozzle; Its pressure energy is converted into kinetic energy; The impulse water turbine bucket makes the water turbine running, and water turbine drives generator for electricity generation, and the pressure energy of water of condensation just obtains utilizing like this; Reduce the waste of the energy, improved rate of energy.
Description of drawings
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Fig. 1 is a structural representation of the present invention.
Each label is among the figure: 1, pressurized combustion burner hearth, 2, high pressure water cold type cyclone dust removal condensation device, 3, modulating valve, 4, high-pressure hydraulic pipe-line; 5, impulse turbine, 6, generator, 7, back-end ductwork, 8, high pressure water cold type cyclone dust removal condensation device suction port; 9, ash bucket, 10, high pressure water cold type cyclone dust removal condensation device air outlet, 11, deposition tank; 12, superheater, 13, reheater, 14, air preheater.
Embodiment
Referring to accompanying drawing 1; High pressure water cold type cyclone dust removal condensation device of the present invention 2, modulating valve 3, high-pressure hydraulic pipe-line 4, impulse turbine 5 and generator 6; High pressure water cold type cyclone dust removal device for cooling suction port 8 is connected with air preheater 14 outlets; One end of high-pressure hydraulic pipe-line 4 is connected to the water of condensation outlet of the deposition tank 11 of high pressure water cold type cyclone dust removal condensation device 2 through modulating valve 3; The nozzle of another termination impulse turbine 5, generator 6 is connected with the output shaft of impulse turbine 5, and high pressure water cold type cyclone dust removal condensation device air outlet 10 links to each other with back-end ductwork 7.
Workflow of the present invention is: the flue gas of discharging from pressurized combustion burner hearth 1 passes through superheater 12, reheater 13, air preheater 14 successively; Become high pressure flue gas near water recovery temperature (about 200 ℃); Then get into high pressure water cold type cyclone dust removal condensation device 2 through high pressure water cold type cyclone dust removal condensation device suction port 8; In high pressure water cold type cyclone dust removal condensation device 2; Flue gas flows downward along cylinder inboard wall twist, and in process of flowing with water cooled furnace wall in cooling water carry out convection heat exchange.Because the water cooled furnace wall temperature is significantly less than the saturation temperature of water vapor in the flue gas; Flue gas discharges a large amount of sensible heats and the latent heat of vaporization; Water vapor in the flue gas is condensated into liquid state, and dust in flue gas is separated through centrifugal action simultaneously, on the cylinder wall; And then the water that is condensed washes away, and gets into deposition tank 11 together.Cigarette after the processing transfers in the bottom upwards to flow, and is discharged by high pressure water cold type cyclone dust removal condensation device air outlet 10, gets into subsequent processes.The ash aqueous mixtures is separated in deposition tank 11; The water of condensation of separating is delivered to impulse turbine 5 through high-pressure hydraulic pipe-line 4; And regulate the flow of water through modulating valve 3; Water of condensation pressure energy in the nozzle of impulse turbine is converted into kinetic energy, and the bucket of impulse water turbine drives water turbine and rotates, and water turbine drives generator 6 rotations and generates electricity.Isolated ash is discharged through ash bucket 9.
Embodiment 1: Fuxin bituminous coal
Car=48.3%, Har=3.3%, Sar=1%, Oar=8.6%, Mar=15% is an example with the unit of a 600MW, boiler Coal-fired capacity hourly is set at 220t, according to
The amount that can calculate theoretical water steam in the flue gas that per hour forms is 97.64t; Suppose in the flue gas that 80% steam coagulation gets off; Condensing capacity then hourly is 78.11t, and water of condensation is collected by high pressure water cold type cyclone dust removal condensation device, and has the pressure energy of 6Mpa.Water of condensation is delivered to water turbine through high-pressure hydraulic pipe-line and in water turbine, is done work, and the pressure of the water of discharging from water turbine equates with local barometric pressure.In this process, the pressure head of water reduces by 590 meters, and the energy that discharges is the energy of 4.61 * 108J; Suppose that the impulse water wheel engine efficiency is 85%; The electric weight that then per hour can send is 108.81 kilowatt hours, and unit is annual to be calculated by 7000 hours, and annual generated energy is 7.62 * 105 kilowatt hours.
Embodiment 2: the Feng Guang brown coal
Car=35.2%, Har=3.2%, Sar=0.2%, Oar=12.6%, Mar=22% is an example with the unit of a 600MW, boiler Coal-fired capacity hourly is set at 220t, according to
The amount that can calculate theoretical water steam in the flue gas that per hour forms is 111t; Suppose in the flue gas that 80% steam coagulation gets off; Condensing capacity then hourly is 88.8t, and water of condensation is collected by high pressure water cold type cyclone dust removal condensation device, and has the pressure energy of 6Mpa.Water of condensation is delivered to water turbine through high-pressure hydraulic pipe-line and in water turbine, is done work, and the pressure of the water of discharging from water turbine equates with local barometric pressure.In this process, the pressure head of water reduces by 590 meters, and the energy that discharges is the energy of 5.24 * 108J; Suppose that the impulse water wheel engine efficiency is 85%; The electric weight that then per hour can send is 123.7 kilowatt hours, and unit is annual to be calculated by 7000 hours, and annual generated energy is 8.66 * 105 kilowatt hours.
Claims (2)
1. supercharging oxygen enrichment fire coal boiler fume water of condensation power generation system; It is characterized in that; It is made up of high pressure water cold type cyclone dust removal condensation device (2), impulse turbine (5) and generator (6); The suction port (8) of said high pressure water cold type cyclone dust removal device for cooling (2) links to each other with interior air preheater (14) outlet of pressurized combustion burner hearth (1) smokejack; Air outlet (10) is connected with back-end ductwork (7), and the water of condensation that the water of condensation outlet of its deposition tank (11) is discharged is through high-pressure hydraulic pipe-line (4) driving impact formula water turbine (5), and said impulse turbine (5) drives generator (6).
2. according to the said supercharging oxygen enrichment of claim 1 fire coal boiler fume water of condensation power generation system, it is characterized in that the high-pressure hydraulic pipe-line (4) between high pressure water cold type cyclone dust removal condensation device (2) and the impulse turbine (5) is provided with modulating valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110323011XA CN102434357A (en) | 2011-10-21 | 2011-10-21 | System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110323011XA CN102434357A (en) | 2011-10-21 | 2011-10-21 | System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler |
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| CN102434357A true CN102434357A (en) | 2012-05-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798112A (en) * | 2012-09-07 | 2012-11-28 | 中国东方电气集团有限公司 | Boiler capable of preventing scorification and dust stratification |
| CN104193059A (en) * | 2013-12-19 | 2014-12-10 | 南宁市磁汇科技有限公司 | Device used for recycling grey water of coal gas generating system |
| CN108479273A (en) * | 2018-06-11 | 2018-09-04 | 兰州大学 | Cleaner and dust pelletizing system |
| CN113035386A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Containment built-in efficient heat exchanger adopting double-wheel double-blade composite power air suction type |
| CN113586314A (en) * | 2021-08-02 | 2021-11-02 | 长江勘测规划设计研究有限责任公司 | Power generation system utilizing direct air-cooled condensate water head pressure energy of thermal power station |
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| CN101634449A (en) * | 2009-09-01 | 2010-01-27 | 东南大学 | Method for reducing emission of carbon dioxide by circulating fluidized bed temperature flue gas circulation oxygen combustion |
| CN101858592A (en) * | 2010-05-11 | 2010-10-13 | 华北电力大学（保定） | Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion |
| CN201735285U (en) * | 2010-06-21 | 2011-02-09 | 刘建波 | Boiler flue dust filtration and purification apparatus |
| CN102094744A (en) * | 2010-12-05 | 2011-06-15 | 侯创新 | Condensate water and cooling water regenerating device of thermal power plant and nuclear power plant |
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Patent Citations (6)
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| CN101063872A (en) * | 2006-04-25 | 2007-10-31 | 神马科技公司 | System for optimizing oxygen in a boiler |
| CN101526060A (en) * | 2009-03-27 | 2009-09-09 | 周俊 | Regenerative method of exhaust steam in thermal power station |
| CN101634449A (en) * | 2009-09-01 | 2010-01-27 | 东南大学 | Method for reducing emission of carbon dioxide by circulating fluidized bed temperature flue gas circulation oxygen combustion |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798112A (en) * | 2012-09-07 | 2012-11-28 | 中国东方电气集团有限公司 | Boiler capable of preventing scorification and dust stratification |
| CN102798112B (en) * | 2012-09-07 | 2015-07-08 | 中国东方电气集团有限公司 | Boiler capable of preventing scorification and dust stratification |
| CN104193059A (en) * | 2013-12-19 | 2014-12-10 | 南宁市磁汇科技有限公司 | Device used for recycling grey water of coal gas generating system |
| CN104193059B (en) * | 2013-12-19 | 2016-06-01 | 南宁市磁汇科技有限公司 | A kind of device for gas recovery generation systems ash water |
| CN108479273A (en) * | 2018-06-11 | 2018-09-04 | 兰州大学 | Cleaner and dust pelletizing system |
| CN113035386A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Containment built-in efficient heat exchanger adopting double-wheel double-blade composite power air suction type |
| CN113035386B (en) * | 2021-03-05 | 2022-11-18 | 哈尔滨工程大学 | Containment built-in efficient heat exchanger adopting double-wheel double-blade composite power air suction type |
| CN113586314A (en) * | 2021-08-02 | 2021-11-02 | 长江勘测规划设计研究有限责任公司 | Power generation system utilizing direct air-cooled condensate water head pressure energy of thermal power station |
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Application publication date: 20120502 |