CN101858592A - Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion - Google Patents
Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion Download PDFInfo
- Publication number
- CN101858592A CN101858592A CN 201010174004 CN201010174004A CN101858592A CN 101858592 A CN101858592 A CN 101858592A CN 201010174004 CN201010174004 CN 201010174004 CN 201010174004 A CN201010174004 A CN 201010174004A CN 101858592 A CN101858592 A CN 101858592A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- pressure
- coal combustion
- condenser
- condensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion, and belongs to the field of energy technology application and CO2 capture. In the technology, by utilizing the characteristic that the condensation temperature of flue gas moisture under high pressure is improved to about 200 DEG C, the condensation heat of the flue gas moisture heats condensation water of a steam turbine, the condensation process is performed in a high-pressure flue gas condenser, the flue gas generated during pressurized oxy-coal combustion enters the high-pressure flue gas condenser, steam in the flue gas is cooled and releases latent heat of vaporization to heat the condensation water of the steam turbine, and the discharged flue gas is continuously compressed and liquefied to fulfill the aim of capturing CO2. Through the technology, the condensation heat of the flue gas moisture is fully utilized, the smoke discharge loss is reduced, the output of the steam turbine is improved, the energy consumption for capturing the CO2 is reduced, and the thermal economy of the pressurized oxygen enriched combustion generating system is improved.
Description
Technical field
The invention belongs to energy technology uses and CO
2The capture field is specifically related to a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion that makes full use of obvious heat of smoke and the feedwater of latent heat heating boiler.
Background technology
The exhaust gas temperature of traditional coal dust firing station boiler is greatly about 110-140 ℃, the moisture that moisture that contains in the coal and the burning of protium wherein generation water vapour and combustion air carry, the volume share of water vapour is approximately 10-15% in the flue gas, the hydrogenesis temperature is 45-55 ℃ under the normal pressure, this heat of condensation is unsuitable for therrmodynamic system and recycles, and can only abandon, under about 120 ℃ of exhaust gas temperatures, flue gas loss is the heat loss of normal pressure pulverized coal firing boiler maximum up to 6-7%.
Adopt the integration electricity generation system of supercharging oxygen-enriched combusting to make burning and capture CO
2Overall process all under the pressure of about 6.0-8.0MPa, finish, under this high pressure, hydrogenesis temperature in the boiler exhaust gas is brought up to about 200 ℃, therefore, can adopt the boiler exhaust gas condenser, originally unserviceable hydrogenesis heat heating boiler is fed water, the part that has substituted the steam turbine heated feed water is drawn gas, significantly reduce the boiler exhaust gas loss, also increased steam turbine and exerted oneself, simplified capture CO simultaneously
2Dewatering process in the flow process.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide the reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion that a kind of condensation heat with flue gas during pressurized oxy-coal combustion is used for the heating boiler feedwater, substitutes the part extracted steam from turbine.
The technical solution used in the present invention is: the high-pressure spray fluidized bed boiler has three inlets, feeds O respectively
2, CO
2And coal; The high-temperature flue gas outlet of high-pressure spray fluidized bed boiler is connected to the smoke inlet of economizer, and the exhanst gas outlet of economizer is connected to the smoke inlet of high pressure flue gas condenser, and the condensation process of high-temperature flue gas is finished in the high pressure flue gas condenser; The steam (vapor) outlet of high-pressure spray fluidized bed boiler is connected to steam turbine, be connected to the water inlet of high pressure flue gas condenser then successively through condenser, condensate pump, the water out process feed heating system of high pressure flue gas condenser is connected to the water inlet of economizer, and steam turbine drives generator for electricity generation; The water out of economizer is connected to the feed-water intake of high-pressure spray fluidized bed boiler.
Described high-temperature flue gas is the flue gas that high-pressure oxygen-enriched coal combustion produces, and main component is CO
2And water vapour.
Described O
2Produce by air-separating plant.
Described CO
2By high-temperature flue gas through the condensed portion C O of high pressure flue gas condenser
2Obtain, in system, recycle all the other CO
2Compress and liquefy.
Described high pressure flue gas condenser utilizes the steam turbine condensate water to cool off described high-temperature flue gas, and reclaims the latent heat of vaporization of water vapour in the flue gas.
Described high-temperature flue gas condenser is a high-pressure bottle, can bear the pressure of 6.0-8.0MPa.
Beneficial effect of the present invention is: flue gas is the flue gas that high-pressure oxygen-enriched coal combustion produces, and its main component is CO
2And water vapour, the volume share of the two is more than 95%, and CO
2With water vapour under high pressure all be liquescent gas, therefore in calculating flue gas, must adopt equation of state of real gas in the process of the dew point of water vapour and condensation heat amount; Utilize the steam turbine condensate water to reclaim the condensation heat of flue gas, reduced heat loss due to exhaust gas, simultaneously, substitute the part extracted steam from turbine, increase exerting oneself of steam turbine, simplified capture CO
2Fume-dehydrating technology in the flow process has effectively improved coal-fired thermal power generation installation and has integrated CO
2The total system economy that captures.
Description of drawings
Fig. 1 is the structural representation of system of the present invention.
Number in the figure:
1-high-pressure spray fluidized bed boiler; The 2-economizer; The 3-steam turbine; The 4-generator; The 5-condenser; The 6-condensate pump; 7-high pressure flue gas condenser; The 8-feed heating system; The 9-air-separating plant.
The specific embodiment
The invention provides a kind of recovery system of condensation heat of flue gas during pressurized oxy-coal combustion, the present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, high-pressure spray fluidized bed boiler 1 has three inlets, feeds O respectively
2, CO
2And coal, wherein, O
2Produce by air-separating plant 9.The high-temperature flue gas outlet of high-pressure spray fluidized bed boiler 1 is connected to the smoke inlet of economizer 2, and the exhanst gas outlet of economizer 2 is connected to the smoke inlet of high pressure flue gas condenser 7; The steam (vapor) outlet of high-pressure spray fluidized bed boiler 1 is connected to steam turbine 3, be connected to the water inlet of high pressure flue gas condenser 7 then successively through condenser 5, condensate pump 6, the water out process feed heating system 8 of high pressure flue gas condenser 7 is connected to the water inlet of economizer 2, and steam turbine 3 drives generators 4 generatings; The water out of economizer 2 is connected to the feed-water intake of high-pressure spray fluidized bed boiler 1.
The O that air-separating plant 9 is produced
2, flue gas recirculation CO
2Enter 1 burning of high-pressure spray fluidized bed boiler together with coal, 1 heating surface heat exchange heats water to superheated steam to the high pressure-temperature flue gas that burning produces through the high-pressure spray fluidized bed boiler, steam enters steam turbine 3 actings, and drives generator 4 generatings, and steam turbine 3 steam discharges enter condenser 5.The main component of high-temperature flue gas is CO
2And water vapour, the flue gas that comes out from economizer 2 enters high pressure flue gas condenser 7, condensate water in the while condenser 5 is delivered to high pressure flue gas condenser 7 by condensate pump 6 flue gas is cooled to below the water-setting junction temperature, water vapour condensation in the flue gas becomes the discharge of flue gas condensing water after discharging the latent heat of vaporization, the heat that discharges is absorbed by condensate water, condensing water temperature is raise enter the feed heating system 8 of back, enter economizer 2 again; The portion C O that comes out from high pressure flue gas condenser 7
2Gas is recycled to high-pressure spray fluidized bed boiler 1, all the other CO
2What gas entered the back compresses and liquefies flow process in order to sealing up for safekeeping.
Described system has the following advantages: (1) is because flue gas condenser maintains the pressure of 6.0-8.0MPa, the adiabatic condensation temperature of smoke evacuation moisture is brought up to about 200 ℃, make the unserviceable hydrogenesis heat of script be able to the heating boiler feedwater, and reduce flue gas loss greatly; (2) because the pressure of flue gas condenser maintains under the 6.0-8.0MPa, convection transfer rate can improve greatly, and the volume of condenser is reduced greatly; (3) come heated feed water owing to utilized in the flue gas latent heat of vaporization of water vapour to substitute the part extracted steam from turbine, so make the steam turbine increase of exerting oneself; When (4) utilizing the flue gas moisture condensation heat, simplified CO
2Capture the fume-dehydrating technology in the flow process, improved the economy of total system.
Claims (6)
1. a reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion is characterized in that, high-pressure spray fluidized bed boiler (1) has three inlets, feeds O respectively
2, CO
2And coal; The high-temperature flue gas outlet of high-pressure spray fluidized bed boiler (1) is connected to the smoke inlet of economizer (2), the exhanst gas outlet of economizer (2) is connected to the smoke inlet of high pressure flue gas condenser (7), and the condensation process of high-temperature flue gas is finished in high pressure flue gas condenser (7); The steam (vapor) outlet of high-pressure spray fluidized bed boiler (1) is connected to steam turbine (3), pass through the water inlet that condenser (5), condensate pump (6) are connected to high pressure flue gas condenser (7) then successively, the water out process feed heating system (8) of high pressure flue gas condenser (7) is connected to the water inlet of economizer (2), and steam turbine (3) drives generator (4) generating; The water out of economizer (2) is connected to the feed-water intake of high-pressure spray fluidized bed boiler (1).
2. a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion according to claim 1 is characterized in that, described high-temperature flue gas is the flue gas that high-pressure oxygen-enriched coal combustion produces, and main component is CO
2And water vapour.
3. a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion according to claim 1 is characterized in that, described O
2Produce by air-separating plant.
4. a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion according to claim 1 is characterized in that, described CO
2By high-temperature flue gas through the condensed portion C O of high pressure flue gas condenser (7)
2Obtain, in system, recycle all the other CO
2Compress and liquefy.
5. a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion according to claim 1 and 2 is characterized in that, described high pressure flue gas condenser (7) utilizes the steam turbine condensate water to cool off described high-temperature flue gas, and reclaims the latent heat of vaporization of water vapour in the flue gas.
6. a kind of reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion according to claim 1 is characterized in that, described high-temperature flue gas condenser (7) is a high-pressure bottle, can bear the pressure of 6.0-8.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010174004 CN101858592A (en) | 2010-05-11 | 2010-05-11 | Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010174004 CN101858592A (en) | 2010-05-11 | 2010-05-11 | Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101858592A true CN101858592A (en) | 2010-10-13 |
Family
ID=42944650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010174004 Pending CN101858592A (en) | 2010-05-11 | 2010-05-11 | Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101858592A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252316A (en) * | 2011-04-27 | 2011-11-23 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102434357A (en) * | 2011-10-21 | 2012-05-02 | 华北电力大学（保定） | System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler |
| CN102431974A (en) * | 2011-09-23 | 2012-05-02 | 山东大学 | Oxygen-enriched combustion poly-generation process and equipment for steam injection boiler in oil field |
| CN104629803A (en) * | 2014-12-18 | 2015-05-20 | 华北科技学院 | Solid fuel gasification method and system based on chemical working medium cycle |
| CN105509038A (en) * | 2015-12-18 | 2016-04-20 | 华北电力大学（保定） | Bubbling fluidized bed type O2/H20 pressurized oxygen-enriched combustion system |
| CN105627349A (en) * | 2016-01-15 | 2016-06-01 | 东南大学 | Method and system for capturing carbon dioxide and recycling water through pure oxygen combustion |
| CN112983576A (en) * | 2021-04-07 | 2021-06-18 | 西安热工研究院有限公司 | Modularized oxygen-enriched combustion power generation system with flexibly adjusted load and operation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06213401A (en) * | 1993-01-20 | 1994-08-02 | Hitachi Ltd | Pressurized fluidized bed combined plant |
| JPH10325507A (en) * | 1997-05-22 | 1998-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Feed water equipment for pressure fluidized bed boiler |
| JPH1194209A (en) * | 1997-09-19 | 1999-04-09 | Toshiba Corp | Protecting device of condensate demineralizer |
| KR20090067648A (en) * | 2007-12-21 | 2009-06-25 | 한국에너지기술연구원 | Oxy-fuel combustion boiler having fgr gas heater for prevention of water condensation |
| US20090211500A1 (en) * | 2008-02-27 | 2009-08-27 | Alstom Technology Ltd | Air-fired co2 capture ready circulating fluidized bed heat generation with a reactor subsystem |
| CN201443978U (en) * | 2009-08-13 | 2010-04-28 | 济南海川炭素有限公司 | Carbon calciner waste heat generating system |
-
2010
- 2010-05-11 CN CN 201010174004 patent/CN101858592A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06213401A (en) * | 1993-01-20 | 1994-08-02 | Hitachi Ltd | Pressurized fluidized bed combined plant |
| JPH10325507A (en) * | 1997-05-22 | 1998-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | Feed water equipment for pressure fluidized bed boiler |
| JPH1194209A (en) * | 1997-09-19 | 1999-04-09 | Toshiba Corp | Protecting device of condensate demineralizer |
| KR20090067648A (en) * | 2007-12-21 | 2009-06-25 | 한국에너지기술연구원 | Oxy-fuel combustion boiler having fgr gas heater for prevention of water condensation |
| US20090211500A1 (en) * | 2008-02-27 | 2009-08-27 | Alstom Technology Ltd | Air-fired co2 capture ready circulating fluidized bed heat generation with a reactor subsystem |
| CN201443978U (en) * | 2009-08-13 | 2010-04-28 | 济南海川炭素有限公司 | Carbon calciner waste heat generating system |
Non-Patent Citations (1)
| Title |
|---|
| 《华北电力大学学报》 20081130 阎维平 洁净煤发电技术的发展前景分析 第70页第1栏第38行至第71页第2栏第21行 1-6 第35卷, 第6期 2 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252316A (en) * | 2011-04-27 | 2011-11-23 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102252316B (en) * | 2011-04-27 | 2014-07-09 | 华北电力大学（保定） | Pressurized oxygen enriched coal combustion flue gas recycling system |
| CN102431974A (en) * | 2011-09-23 | 2012-05-02 | 山东大学 | Oxygen-enriched combustion poly-generation process and equipment for steam injection boiler in oil field |
| CN102431974B (en) * | 2011-09-23 | 2013-05-08 | 山东大学 | Oxygen-enriched combustion poly-generation process and equipment for steam injection boiler in oil field |
| CN102434357A (en) * | 2011-10-21 | 2012-05-02 | 华北电力大学（保定） | System for generating power employing condensed water of flue gases in supercharged oxygen-enriched coal burning boiler |
| CN104629803A (en) * | 2014-12-18 | 2015-05-20 | 华北科技学院 | Solid fuel gasification method and system based on chemical working medium cycle |
| CN105509038A (en) * | 2015-12-18 | 2016-04-20 | 华北电力大学（保定） | Bubbling fluidized bed type O2/H20 pressurized oxygen-enriched combustion system |
| CN105627349A (en) * | 2016-01-15 | 2016-06-01 | 东南大学 | Method and system for capturing carbon dioxide and recycling water through pure oxygen combustion |
| CN112983576A (en) * | 2021-04-07 | 2021-06-18 | 西安热工研究院有限公司 | Modularized oxygen-enriched combustion power generation system with flexibly adjusted load and operation method thereof |
| CN112983576B (en) * | 2021-04-07 | 2022-08-30 | 西安热工研究院有限公司 | Modularized oxygen-enriched combustion power generation system with flexibly adjusted load and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108331625B (en) | A kind of electricity generation system using the Natural Gas Power Plant smoke evacuation latent heat of vaporization | |
| EP3064841B1 (en) | Gas steam combined cycle central heating device | |
| CN107014218B (en) | Thermal power generation system based on waste heat and complementary energy integrated utilization of coking plant | |
| CN101761915B (en) | Combined cycle generation system of high-pressure oxygen-enriched combustion fluidized bed | |
| CN101858592A (en) | Reclaiming system for condensation heat of flue gas during pressurized oxy-coal combustion | |
| CN101699207B (en) | Method for improving thermodynamic cycling quality of waste sinter heat power generation system | |
| JP2010530948A (en) | Method of generating power by oxyfuel combustion and power plant | |
| CN112160806B (en) | Supercritical CO coupled with oxygen-enriched combustion2Circulating combined cooling heating and power system | |
| AU2010202597B2 (en) | Method for operating a steam turbine power plant and also device for generating steam | |
| CN104474851B (en) | A kind of is CO before burning 2the device and method of trapping system supply steam | |
| CN106224024A (en) | A kind of multiple stage circulation power generation integrated system of zero carbon emission | |
| CN104500158A (en) | Low-concentration coalbed methane or gas electric generating system | |
| CN103277155B (en) | Brown coal are predrying-preheated air-UTILIZATION OF VESIDUAL HEAT IN compound coal generating system | |
| CN113294770B (en) | Oxygen-enriched combustion coupled supercritical CO2Cyclic cogeneration system | |
| CN208918610U (en) | Supercritical CO 2 and coal fired power plant decarburization integrate and the electricity generation system of UTILIZATION OF VESIDUAL HEAT IN | |
| CN215292691U (en) | Biomass gasification power generation system coupled with coal-fired power plant | |
| CN111457344B (en) | Combined reheating power generation system of combustion boiler and waste heat boiler | |
| CN105509038A (en) | Bubbling fluidized bed type O2/H20 pressurized oxygen-enriched combustion system | |
| CN102278205A (en) | Combined cycle method capable of being used for distributed air and fuel humidified gas turbine | |
| CN201723313U (en) | Gas turbine combined cycling device for distributed air and fuel humidification | |
| CN104612766A (en) | Saturated steam turbine power generation system applied to independent gasification island | |
| CN203626905U (en) | Saturated steam turbine power generating system applied to independent gasification island | |
| CN204261537U (en) | A kind of is CO before burning 2the device of trapping system supply steam | |
| CN203443378U (en) | Improved lime kiln waste gas residual heat power generation system with byproduct gas afterburning | |
| CN206889110U (en) | It is a kind of to integrate efficient, economize on water, the controllable co-generation system of gas turbine four |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101013 |