CN103075740A - Chimney white mist removal system and method - Google Patents
Chimney white mist removal system and method Download PDFInfo
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- CN103075740A CN103075740A CN2013100512490A CN201310051249A CN103075740A CN 103075740 A CN103075740 A CN 103075740A CN 2013100512490 A CN2013100512490 A CN 2013100512490A CN 201310051249 A CN201310051249 A CN 201310051249A CN 103075740 A CN103075740 A CN 103075740A
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Abstract
The invention discloses a chimney white mist removal system and a chimney white mist removal method. The system comprises a desulfurizing tower, a fan, a chimney, a coal fired boiler heat secondary air main pipe, a dust collector and a high-temperature electric dust collector, wherein the coal fired boiler heat secondary air main pipe is connected with an inlet of the high-temperature electric dust collector through a flue I; the flue I is provided with an air valve I; an outlet of the high-temperature electric dust collector is connected with one end of a flue II; the other end of the flue II is communicated with an air passage; and the flue II is provided with an air valve II. The method comprises the following steps of: (1) feeding a part of dust-containing hot air in the coal fired boiler heat secondary air main pipe into the flue I, wherein the temperature of the dust-containing hot air is 300-350 DEG C; (2) feeding the dust-containing hot air in the step (1) into the high-temperature electric dust collector from the flue I to perform heating and dust collection on the dust-containing hot air; (3) feeding hot air which is subjected to heating and dust collection in the step (2) into the flue II from the outlet of the high-temperature electric dust collector, next feeding into the air passage between the desulfurizing tower and the fan, and mixing with desulfurized low-temperature gas to realize that the temperature of the hot air discharged by the fan reaches 100-110 DEG C; and (4) feeding the mixed hot air into the chimney to be discharged into atmosphere through the fan.
Description
Technical field
The present invention relates to a kind of system and method except the white mist of chimney, particularly a kind of system and method except the white mist of coal-burning power plant's chimney.
Background technology
At present, along with the day by day raising of China's Emission standards of air pollutants for coal-fired, the coal-burning power plant of China majority has adopted efficient dedusting, desulphurization and denitration process system, and the discharge capacity of pollutant reduces year by year, has effectively protected atmospheric environment.But because the flue gas after the dedusting is after the desulfurizing tower desulfurization, temperature is reduced to rapidly about 40～50 ℃, lower and a large amount of steam that mixed of temperature, and the coal fired power plant flue gas desulfurization system is when design, in view of taking up an area the reasons such as space and cost of investment, often be not Gas-Gas Heater with GGH(English) heater, the reasonability that designs from coal-burning power plant's chimney height simultaneously, its chimney height is generally all about 200 meters, flue gas is when chimney enters atmosphere like this, the low-temperature flue gas of a large amount of steam of having mixed is met cold condense rapidly afterwards, produced round and round " a white mist " around the chimney breast, it is not up to standard that people usually misread this power-plant flue gas discharging, and this phenomenon is called " Mao Baiyan ", thereby bring harmful effect to power plant.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of system and method except the white mist of chimney that is applicable to the coal-burning power plant.
For solving the problems of the technologies described above, a kind of system except the white mist of chimney of the present invention, contain desulfurizing tower, blower fan, chimney, the female pipe of coal-fired boiler hot Secondary Air and deduster, one end of desulfurizing tower links to each other with the deduster output channel, the other end of desulfurizing tower links to each other with an end in air channel, the other end in air channel links to each other with the import of blower fan, the outlet of blower fan links to each other with an end of exhausting duct, the other end of exhausting duct links to each other with chimney, also contain hot electrostatic precipitator, the female pipe of described coal-fired boiler hot Secondary Air links to each other with the import of hot electrostatic precipitator by the flue I, described flue I is provided with the air-valve I, the outlet of hot electrostatic precipitator links to each other with an end of flue II, and the other end of flue II is connected with described air channel, and the flue II is provided with the air-valve II.
A kind of method except the white mist of chimney of the present invention may further comprise the steps:
(1) the dust-laden hot blast of the part in the female pipe of coal-fired boiler hot Secondary Air enters the flue I, and this dust-laden hot blast temperature is 300～350 ℃;
(2) the dust-laden hot blast in the step (1) enters the hot electrostatic precipitator from the flue I, and hot electrostatic precipitator heats and dedusting the dust-laden hot blast of this part;
(3) outlet from hot electrostatic precipitator enters the flue II through the hot blast after heating and the dedusting in (2) step, then the hot blast in the flue II enters in the air channel between desulfurizing tower and the blower fan, and mix with low-temperature flue gas after the desulfurization, make the temperature of blower fan discharging hot blast reach 100～110 ℃;
(4) mixed hot blast enters chimney through blower fan and enters atmosphere.
The present invention is by utilizing the high-temperature hot-air in the female pipe of coal-fired boiler hot Secondary Air, after hot electrostatic precipitator heating and dedusting, mix with the low temperature hot blast after the desulfurizing tower desulfurization, make the final gas of discharging of chimney can Yin Wendu not cross low and form " white mist ", thereby it be up to standard and bring dysgenic deficiency to power plant to avoid people to misread the power-plant flue gas discharging.
Description of drawings
Fig. 1 is a kind of structural representation that removes the system of the white mist of chimney of the present invention.
The specific embodiment
Among Fig. 1, a kind of system except the white mist of chimney of the present invention contains desulfurizing tower 5, blower fan 10, chimney 11, the female pipe 1 of coal-fired boiler hot Secondary Air and deduster.One end of desulfurizing tower 5 links to each other with deduster output channel 4, and the other end of desulfurizing tower 5 links to each other with an end in air channel 7, and the other end in air channel 7 links to each other with the import of blower fan 10, and the outlet of blower fan 10 links to each other with an end of exhausting duct, and the other end of exhausting duct links to each other with chimney 11.Above-mentioned system except the white mist of chimney also contains hot electrostatic precipitator 6.The female pipe 1 of described coal-fired boiler hot Secondary Air links to each other with the import of hot electrostatic precipitator 6 by flue I 3, and described flue I 3 is provided with air-valve I 2.The outlet of hot electrostatic precipitator 6 links to each other with an end of flue II 8, and the other end of flue II 8 is connected with described air channel 7.Flue II 8 is provided with air-valve II 9.A kind of method except the white mist of chimney of the present invention may further comprise the steps: the dust-laden hot blast of the part in the female pipe 1 of (1) coal-fired boiler hot Secondary Air enters flue I 3, and this dust-laden hot blast temperature is 300～350 ℃; (2) the dust-laden hot blast in the step (1) enters the hot electrostatic precipitator 6 from flue I 3, and the dust-laden hot blast of 6 pairs of these parts of hot electrostatic precipitator heats and dedusting; (3) outlet from hot electrostatic precipitator 6 enters the flue II 8 through the hot blast after heating and the dedusting in (2) step, then the hot blast in the flue II 8 enters in the air channel 7 between desulfurizing tower 5 and the blower fan 10, and mix with low-temperature flue gas after the desulfurization, make the temperature of blower fan 10 discharging hot blasts reach 100～110 ℃; (4) mixed hot blast enters chimney 11 through blower fan 10 and enters atmosphere.The present invention is by utilizing the high-temperature hot-air in the female pipe 1 of coal-fired boiler hot Secondary Air, after hot electrostatic precipitator 6 heating and dedusting, mix with the low temperature hot blast after desulfurizing tower 5 desulfurization, make the final gases of discharging of chimney 11 can Yin Wendu not cross low and form " white mist ", thereby it be up to standard and bring dysgenic deficiency to power plant to avoid people to misread the power-plant flue gas discharging.When being in summer, temperature is higher, and day and night temperature is little, and the flue gas after the desulfurization is not prone to " white mist " phenomenon when entering atmosphere from chimney.At this moment, air-valve I 2 and air-valve II 9 can be closed, the hot electrostatic precipitator 6 of stopping transport simultaneously is to realize saving consumption reduction.
Claims (2)
1. system except the white mist of chimney, contain desulfurizing tower, blower fan, chimney, the female pipe of coal-fired boiler hot Secondary Air and deduster, one end of desulfurizing tower links to each other with the deduster output channel, the other end of desulfurizing tower links to each other with an end in air channel, the other end in air channel links to each other with the import of blower fan, the outlet of blower fan links to each other with an end of exhausting duct, the other end of exhausting duct links to each other with chimney, it is characterized in that: also contain hot electrostatic precipitator, the female pipe of described coal-fired boiler hot Secondary Air links to each other with the import of hot electrostatic precipitator by the flue I, described flue I is provided with the air-valve I, the outlet of hot electrostatic precipitator links to each other with an end of flue II, the other end of flue II is connected with described air channel, and the flue II is provided with the air-valve II.
2. method except the white mist of chimney may further comprise the steps:
(1) the dust-laden hot blast of the part in the female pipe of coal-fired boiler hot Secondary Air enters the flue I, and this dust-laden hot blast temperature is 300～350 ℃;
(2) the dust-laden hot blast in the step (1) enters the hot electrostatic precipitator from the flue I, and hot electrostatic precipitator heats and dedusting the dust-laden hot blast of this part;
(3) outlet from hot electrostatic precipitator enters the flue II through the hot blast after heating and the dedusting in (2) step, then the hot blast in the flue II enters in the air channel between desulfurizing tower and the blower fan, and mix with low-temperature flue gas after the desulfurization, make the temperature of blower fan discharging hot blast reach 100～110 ℃;
(4) mixed hot blast enters chimney through blower fan and enters atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100512490A CN103075740A (en) | 2013-02-16 | 2013-02-16 | Chimney white mist removal system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100512490A CN103075740A (en) | 2013-02-16 | 2013-02-16 | Chimney white mist removal system and method |
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| CN103075740A true CN103075740A (en) | 2013-05-01 |
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| CN2013100512490A Pending CN103075740A (en) | 2013-02-16 | 2013-02-16 | Chimney white mist removal system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994456A (en) * | 2014-05-06 | 2014-08-20 | 浙江天地环保工程有限公司 | Integrated system for efficiently and synergistically removing multiple pollutants |
| CN109028922A (en) * | 2018-06-11 | 2018-12-18 | 济南阜丰宏发机械有限公司 | Exhaust gas white cigarette cleaning equipment and its technique during a kind of Starch Production dry materials |
| CN110790335A (en) * | 2018-12-13 | 2020-02-14 | 北京国电龙源环保工程有限公司 | Wastewater zero discharge and desulfurization flue gas white elimination integrated treatment device and treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102294171A (en) * | 2011-06-30 | 2011-12-28 | 光大环保能源（苏州）有限公司 | Flue gas purifying system |
| CN202221098U (en) * | 2011-08-24 | 2012-05-16 | 中电投东北节能技术有限公司 | Mixed type GGH system |
| JP2012242029A (en) * | 2011-05-23 | 2012-12-10 | Metawater Co Ltd | Heat recovery system from exhaust gas of incinerator |
| CN203082907U (en) * | 2013-02-16 | 2013-07-24 | 盐城市兰丰环境工程科技有限公司 | System for removing white mist of chimney |
-
2013
- 2013-02-16 CN CN2013100512490A patent/CN103075740A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012242029A (en) * | 2011-05-23 | 2012-12-10 | Metawater Co Ltd | Heat recovery system from exhaust gas of incinerator |
| CN102294171A (en) * | 2011-06-30 | 2011-12-28 | 光大环保能源（苏州）有限公司 | Flue gas purifying system |
| CN202221098U (en) * | 2011-08-24 | 2012-05-16 | 中电投东北节能技术有限公司 | Mixed type GGH system |
| CN203082907U (en) * | 2013-02-16 | 2013-07-24 | 盐城市兰丰环境工程科技有限公司 | System for removing white mist of chimney |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994456A (en) * | 2014-05-06 | 2014-08-20 | 浙江天地环保工程有限公司 | Integrated system for efficiently and synergistically removing multiple pollutants |
| CN103994456B (en) * | 2014-05-06 | 2015-09-09 | 浙江天地环保工程有限公司 | The efficient cooperation-removal integrated system of multiple pollutant |
| CN109028922A (en) * | 2018-06-11 | 2018-12-18 | 济南阜丰宏发机械有限公司 | Exhaust gas white cigarette cleaning equipment and its technique during a kind of Starch Production dry materials |
| CN110790335A (en) * | 2018-12-13 | 2020-02-14 | 北京国电龙源环保工程有限公司 | Wastewater zero discharge and desulfurization flue gas white elimination integrated treatment device and treatment method |
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Application publication date: 20130501 |