CN209960529U - Flue gas condensation and treatment system of coal-fired power plant - Google Patents
Flue gas condensation and treatment system of coal-fired power plant Download PDFInfo
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- CN209960529U CN209960529U CN201920100400.8U CN201920100400U CN209960529U CN 209960529 U CN209960529 U CN 209960529U CN 201920100400 U CN201920100400 U CN 201920100400U CN 209960529 U CN209960529 U CN 209960529U
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- flue gas
- flue
- heat exchanger
- coal
- desulfurizing tower
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model relates to a coal fired power plant flue gas condensation and processing system, including the boiler, install denitrification facility, air heater and dust remover on the flue gas pipeline of boiler in proper order, the output of dust remover is connected with the import flue on the desulfurizing tower, installs flue gas condensation heat exchanger and flue gas heating heat exchanger on the export flue on the desulfurizing tower in proper order, and flue gas heating heat exchanger's output and chimney are connected, are equipped with circulating water pipeline in the import flue, and circulating water pipeline is used for carrying out the heat exchange for the flue gas in the flue gas heating heat exchanger. The utility model discloses make full use of flue gas is from the heat source in area, with the flue gas in the desulfurizing tower export flue through the earlier cooling of flue gas condensation heat exchanger, appear the condensate water, the specific heat of wet flue gas reduces, heats through flue gas heating heat exchanger again, reaches the purpose of eliminating chimney exhaust white cigarette feather.
Description
Technical Field
The utility model relates to a coal fired power plant flue gas condensation and processing system belongs to flue gas processing system technical field.
Background
With the rapid development of economy in China, the requirements on environmental protection are increasingly strict. In 2011, China issued clean air laws, atmospheric pollutant emission limit instructions of large-scale combustion enterprises and atmospheric pollutant emission standards of thermal power plants as new standards for atmospheric pollutant emission of thermal power plants, which are called the strictest thermal power standards in history, and the emission limit regulations of main atmospheric pollutants of the coal-fired power plants all reach the international leading requirements. The general practice notes in nineteen reports of the Party that "insist on the collective control of the whole population, the source control, continuously implement the action of controlling the atmospheric pollution and win the blue sky guard war". "Shanghai, Zhejiang, Tianjin, Hebei, etc. put forward higher environmental protection requirements, and put forward policy and rules for eliminating white smoke plume, etc. successively for coal and electricity, so as to accelerate smoke diffusion and reduce local pollution.
At present, limestone-gypsum wet desulphurization technology is mostly adopted in coal-fired power plants in China, so that flue gas at a desulphurization outlet contains a large amount of gasified water vapor and usually reaches a saturated state, when the saturated wet flue gas is discharged from a chimney and enters ambient air at a lower temperature, the temperature of the flue gas is reduced, so that gaseous water is supersaturated and condensed to form small droplets. The fog-like water vapor generates scattering and refraction phenomena due to illumination and the like, so that the smoke plume presents white or gray, and forms white smoke plume (large white smoke). Although the condensed water mist in the wet flue gas has no direct influence on the environmental quality, the condensed water mist is easily mistaken for harmful gas, and visual environmental pollution is caused. In addition, the wet flue gas can influence the diffusion height and speed of the flue gas, so that the concentration of pollutants near a chimney is increased, and certain influence is caused on the life of surrounding residents. With the recent gradual increase of environmental protection requirements, the elimination of "white plume" has become one of the important tasks for ultra-low emission in many coal-fired power plants.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coal fired power plant's flue gas condensation and processing system for eliminate chimney exhaust white plume.
In order to achieve the purpose of the invention, the utility model adopts the technical scheme that: the utility model provides a coal fired power plant flue gas condensation and processing system, including the boiler, install denitrification facility, air heater and dust remover on the flue gas pipeline of boiler in proper order, the output of dust remover is connected with the inlet flue on the desulfurizing tower, install flue gas condensation heat exchanger and flue gas heating heat exchanger on the outlet flue on the desulfurizing tower in proper order, flue gas heating heat exchanger's output and chimney are connected, be equipped with circulating water pipeline in the inlet flue, circulating water pipeline is used for carrying out the heat exchange for the flue gas in the flue gas heating heat exchanger.
In the scheme, the inlet flue is also provided with a manhole door and an ash discharge port.
In the above scheme, an induced draft fan is installed between the output end of the dust remover and the inlet flue on the desulfurizing tower.
In the scheme, the boiler is provided with the economizer, the flue gas condensation heat exchanger takes process water as a cooling medium, and the process water absorbs heat of flue gas and then is conveyed to the economizer through a pipeline.
The invention has the beneficial effects that: (1) because set up circulating water pipeline in the import flue on the desulfurizing tower, can reduce the temperature that gets into flue gas in the desulfurizing tower, the heat that the flue gas cooling produced sends flue gas heating heat exchanger on the desulfurizing tower export flue through circulating water pipeline, make full use of the heat source, the flue gas in the desulfurizing tower export flue is cooled down earlier through flue gas condensation heat exchanger, appears the condensate water, the specific heat of wet flue gas reduces, heats through flue gas heating heat exchanger again, reaches the purpose of eliminating the white plume of chimney exhaust. (2) The flue gas condensation heat exchanger takes process water as a cooling medium, and the water medium after absorbing the heat of the flue gas is sent to an economizer of a boiler heating system through a pipeline, so that the temperature of boiler feed water is increased, and the effect of saving energy is achieved.
Description of the drawings:
fig. 1 is the utility model discloses a coal fired power plant flue gas condensation and processing system schematic diagram.
Fig. 2 is a schematic diagram of a flue condensing unit before a desulfurizing tower.
In the figure: 1. a boiler; 2. a coal economizer; 3. a denitration device; 4. an air preheater; 5. a dust remover; 61. an inlet flue; 62. a flue gas heating heat exchanger; 63. a circulating water pipeline; 64. a manhole door; 65. an ash discharge port; 7. a desulfurizing tower; 8. a flue gas condensing heat exchanger; 9. and (4) a chimney.
Detailed Description
As shown in fig. 1, in this embodiment, flue gas generated by burning coal in the boiler 1 of the coal-fired power plant enters the air preheater 4 after passing through the denitration device 3, enters the inlet flue 61 of the desulfurizing tower through the induced draft fan after being dedusted by the deduster 5, enters the desulfurizing tower 7 after being cooled, is cooled by the flue gas condensing heat exchanger 8 first to separate out condensed water, reduces specific heat of the flue gas, and is heated by the flue gas heating heat exchanger 62 to be discharged out of the chimney 9, thereby achieving the effect of eliminating white smoke. Wherein, the flue behind the flue gas condensing heat exchanger is provided with a condensed water recovery device which is not shown in the figure. As shown in fig. 2, a circulating water pipeline 63 is arranged in the inlet flue 61 on the desulfurizing tower 7, and the circulating water pipeline 63 is used for exchanging heat for the flue gas in the flue gas heating heat exchanger 62, so as to recycle the flue gas waste heat. The circulating water pipeline is provided with a water pump for providing power. The funnel-shaped ash discharge opening 65 is arranged on the flue in front of the desulfurizing tower, so that the flue can be cleaned in time, and the scaling and corrosion of the flue are reduced. And a manhole door 64 is arranged at the upper part of the flue, so that the maintenance of the flue is convenient.
The flue gas condensation heat exchanger 8 takes process water as a cooling medium, and the water medium after absorbing the heat of the flue gas is sent to an economizer 2 (a water pump is arranged in a pipeline) of a boiler heating system through the pipeline, so that the temperature of boiler feed water is increased, and the effect of saving energy is achieved.
Claims (4)
1. The utility model provides a coal fired power plant flue gas condensation and processing system, a serial communication port, including boiler (1), install denitrification facility (3) on the flue gas pipeline of boiler (1) in proper order, air heater (4) and dust remover (5), the output of dust remover (5) is connected with import flue (61) on desulfurizing tower (7), install flue gas condensation heat exchanger (8) and flue gas heating heat exchanger (62) on the export flue on desulfurizing tower (7) in proper order, the output and chimney (9) of flue gas heating heat exchanger (62) are connected, be equipped with circulating water pipeline (63) in import flue (61), circulating water pipeline (63) are used for carrying out the heat exchange for the flue gas in flue gas heating heat exchanger (62).
2. The coal-fired power plant flue gas condensation and treatment system according to claim 1, wherein the inlet flue (61) is further provided with a manhole door (64) and an ash discharge port (65).
3. The coal-fired power plant flue gas condensation and treatment system according to claim 1, characterized in that an induced draft fan is installed between the output end of the dust collector (5) and the inlet flue (61) on the desulfurizing tower (7).
4. The flue gas condensation and treatment system of the coal-fired power plant according to claim 1, wherein the boiler (1) is provided with an economizer (2), the flue gas condensation heat exchanger (8) uses process water as a cooling medium, and the process water absorbs heat of flue gas and then is sent to the economizer (2) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920100400.8U CN209960529U (en) | 2019-01-19 | 2019-01-19 | Flue gas condensation and treatment system of coal-fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920100400.8U CN209960529U (en) | 2019-01-19 | 2019-01-19 | Flue gas condensation and treatment system of coal-fired power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209960529U true CN209960529U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920100400.8U Expired - Fee Related CN209960529U (en) | 2019-01-19 | 2019-01-19 | Flue gas condensation and treatment system of coal-fired power plant |
Country Status (1)
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| CN (1) | CN209960529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259847A (en) * | 2021-12-17 | 2022-04-01 | 湖州南太湖热电有限公司 | Environment-friendly white flue gas treatment system |
-
2019
- 2019-01-19 CN CN201920100400.8U patent/CN209960529U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259847A (en) * | 2021-12-17 | 2022-04-01 | 湖州南太湖热电有限公司 | Environment-friendly white flue gas treatment system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 Termination date: 20210119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |