CN109974021A - A kind of power plant stack gas treatment process - Google Patents
A kind of power plant stack gas treatment process Download PDFInfo
- Publication number
- CN109974021A CN109974021A CN201711467287.9A CN201711467287A CN109974021A CN 109974021 A CN109974021 A CN 109974021A CN 201711467287 A CN201711467287 A CN 201711467287A CN 109974021 A CN109974021 A CN 109974021A
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- CN
- China
- Prior art keywords
- flue gas
- power plant
- transported
- treatment process
- gas treatment
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
A kind of power plant stack gas treatment process, comprising the following steps: (1) outlet flue of boiler is connected into cooling tower, high-temperature flue gas is carried out tentatively cooling；(2) it will be transported to first grade desulfurizing device into excessively tentatively cooling flue gas, carries out preliminary desulfurization；(3) dust-extraction unit is transported to by the flue gas after Desulfovibrio, it is dusted processing；(4) flue gas Jing Guo dust removal process is transported to two-grade desulfurizing device desulfurization, is discharged after detection is qualified by flue gas, detected the unqualified first grade desulfurizing device that is transmitted back to and handled again.Flue gas of the present invention for thermal power generation to generate is handled, and to reduce thermal power generation environmental pollution, while improving the control emission benefit of power plant, has preferable economic benefit and environmental benefit.
Description
Technical field
The invention belongs to exhaust-gas treatment related fieldss, and in particular to a kind of power plant stack gas treatment process.
Background technique
In the power plant such as garbage incinerating power plant and coal-fired power plant, chimney and cooling tower are common devices, and chimney is used
It is discharged into atmosphere in by the flue gas generated in burning process, and for the ease of flue gas expanding, chimney usually requires to reach certain
Highly.And cooling tower is to give sky the heat transmission of water with the recirculated water for carrying waste heat is carried out heat exchange in Ta Nei and air
Gas simultaneously spills into atmosphere, cools down to recirculated water.
It often can be appreciated that chimney breast emits white cigarette and cooling tower exports the phenomenon that emitting white haze at present, for chimney,
It is because containing a large amount of vapor in the flue gas of discharge, after flue gas enters atmosphere from chimney, temperature is reduced, and vapor condenses to the cold
It at droplet, is formed white cigarette (being mist in fact), therefore white cigarette phenomenon becomes apparent when temperature is lower.For cooling tower,
It is to absorb moisture after cooling tower due to air to reach saturation state, after being flowed out from cooling tower, will cools down and moisture is precipitated,
Generate white haze.Chimney and the white haze of cooling tower outlet affect city appearance, cause visual pollution, house refuse of especially adjusting the distance
The close resident living area in the power plants such as power generation by waste combustion factory, this visual pollution influence is bigger, and this visual pollution will affect
Visibility etc. brings certain danger to neighbouring resident.
System used by domestic and international coal fired power plant flue gas desulfurization is mostly wet desulfurization of flue gas by limestone-gypsum method system,
Wet desulfurization of flue gas by limestone-gypsum method system is using lime stone as desulfurizing agent, and lime stone powder and water are mixed into absorption slurries
And and smoke contacts, SO2 is removed in desulfurizing tower with calcium oxide in slurries and air oxidation reaction in flue gas, flue gas after desulfurization
Fine drop is removed by demister, neat stress is come out after flue gas heat exchanger heats up from desulfurizing tower and big compression ring is discharged by chimney
Border.After carrying out heat exchange due to the flue gas from the neat stress that desulfurizing tower comes out in flue gas heat exchanger and into desulfurizing tower, only
Flue-gas temperature rises to nearly 80 DEG C by 45 DEG C, so that the height and range of scatter when neat stress discharges are improved, reduces single
Dustiness in the region of position；However, 90 DEG C of SO2 dew-point temperature, after flue gas heat exchanger exchanges heat, flue-gas temperature is lower than dew point temperature
Degree, to the seriously corroded of the equipment such as flue gas heat exchanger, flue, Roots blower, chimney, so that the maintenance and update of each equipment
Frequency is high, about 6~4 times/year, so that the maintenance time of desulphurization system and generating set is uncoordinated, asynchronous, influences to send out
Motor group operates normally.
Summary of the invention
It is an object of the invention to aiming at the shortcomings in the prior art, provide a kind of power plant stack gas treatment process.
In order to realize the invention adopts the following technical scheme: a kind of power plant stack gas treatment process, comprising the following steps:
(1) outlet flue of boiler is connected into cooling tower, high-temperature flue gas is carried out tentatively cooling；
(2) it will be transported to first grade desulfurizing device into excessively tentatively cooling flue gas, carries out preliminary desulfurization；
(3) dust-extraction unit is transported to by the flue gas after Desulfovibrio, it is dusted processing；
(4) flue gas Jing Guo dust removal process is transported to two-grade desulfurizing device desulfurization, is discharged after detection is qualified by flue gas, detection
The unqualified first grade desulfurizing device that is transmitted back to is handled again.
Further, the burnett's solution in the step (2) in first grade desulfurizing device equipped with 23~35% concentration sprays system
System.
Further, ceramic particle filter layer is equipped in the dust-extraction unit in the step (3).
Further, 6~15% concentration burnett's solutions are equipped in the two-grade desulfurizing device desulfurization in the step (4) to spray
System, outlet flue are equipped with sulfur-bearing concentration detector.
The utility model has the advantages that flue gas of the present invention for thermal power generation to generate is handled, to reduce thermal power generation environmental pollution,
The control emission benefit of power plant is improved simultaneously, and there is preferable economic benefit and environmental benefit.
Specific embodiment
A kind of embodiment: power plant stack gas treatment process, comprising the following steps:
(1) outlet flue of boiler is connected into cooling tower, high-temperature flue gas is carried out tentatively cooling；
(2) it will be transported to first grade desulfurizing device into excessively tentatively cooling flue gas, carries out preliminary desulfurization；
(3) dust-extraction unit is transported to by the flue gas after Desulfovibrio, it is dusted processing；
(4) flue gas Jing Guo dust removal process is transported to two-grade desulfurizing device desulfurization, is discharged after detection is qualified by flue gas, detection
The unqualified first grade desulfurizing device that is transmitted back to is handled again.
The burnett's solution spray system of 23~35% concentration is equipped in the step (2) in first grade desulfurizing device；It is described
Ceramic particle filter layer is equipped in dust-extraction unit in step (3)；It is equipped in two-grade desulfurizing device desulfurization in the step (4)
6~15% concentration burnett's solution spray systems.
Claims (4)
1. a kind of power plant stack gas treatment process, which comprises the following steps:
(1) outlet flue of boiler is connected into cooling tower, high-temperature flue gas is carried out tentatively cooling；
(2) it will be transported to first grade desulfurizing device into excessively tentatively cooling flue gas, carries out preliminary desulfurization；
(3) dust-extraction unit is transported to by the flue gas after Desulfovibrio, it is dusted processing；
(4) flue gas Jing Guo dust removal process is transported to two-grade desulfurizing device desulfurization, is discharged after detection is qualified by chimney, detection
The unqualified first grade desulfurizing device that is transmitted back to is handled again.
2. a kind of power plant stack gas treatment process according to claim 1, which is characterized in that level-one in the step (2)
The burnett's solution spray system of 23~35% concentration is equipped in desulfurizer.
3. a kind of power plant stack gas treatment process according to claim 1, which is characterized in that removing in the step (3)
Ceramic particle filter layer is equipped in dirt device.
4. a kind of power plant stack gas treatment process according to claim 1, which is characterized in that two in the step (4)
6~15% concentration burnett's solution spray systems are equipped in grade desulfurizer desulfurization, outlet flue is equipped with sulfur-bearing concentration detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467287.9A CN109974021A (en) | 2017-12-28 | 2017-12-28 | A kind of power plant stack gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467287.9A CN109974021A (en) | 2017-12-28 | 2017-12-28 | A kind of power plant stack gas treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109974021A true CN109974021A (en) | 2019-07-05 |
Family
ID=67075521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711467287.9A Pending CN109974021A (en) | 2017-12-28 | 2017-12-28 | A kind of power plant stack gas treatment process |
Country Status (1)
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| CN (1) | CN109974021A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4013340A1 (en) * | 1990-04-26 | 1991-10-31 | Petersen Hugo Verfahrenstech | Breaking down polyhalogenated hydrocarbon cpds. - contg. adsorbed mercury, by heating in absence of oxygen to desorb mercury and breakdown halo-cpds. |
| DE19849021A1 (en) * | 1998-10-23 | 2000-04-27 | Abb Research Ltd | Reduction of corrosion in refuse incinerators by preventing the formation of free chlorine as flue gas, high in sulfur dioxide, is recirculated into the combustion chamber |
| CN202366619U (en) * | 2011-11-30 | 2012-08-08 | 河北瑞晶康生物科技有限公司 | Desulfurizer for fuel coal flue gas |
| CN202506310U (en) * | 2012-04-26 | 2012-10-31 | 江苏天楹环保能源股份有限公司 | Garbage-incinerated flue gas purification-combined deacidification system |
| CN202715319U (en) * | 2012-05-23 | 2013-02-06 | 金华华东环保设备有限公司 | Flue gas collecting, treating and detecting and controlling system for small-sized sintering furnace |
| CN105889960A (en) * | 2014-12-14 | 2016-08-24 | 无锡市华星电力环保修造有限公司 | Flue gas desulfurization device for coal-fired boiler |
-
2017
- 2017-12-28 CN CN201711467287.9A patent/CN109974021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4013340A1 (en) * | 1990-04-26 | 1991-10-31 | Petersen Hugo Verfahrenstech | Breaking down polyhalogenated hydrocarbon cpds. - contg. adsorbed mercury, by heating in absence of oxygen to desorb mercury and breakdown halo-cpds. |
| DE19849021A1 (en) * | 1998-10-23 | 2000-04-27 | Abb Research Ltd | Reduction of corrosion in refuse incinerators by preventing the formation of free chlorine as flue gas, high in sulfur dioxide, is recirculated into the combustion chamber |
| CN202366619U (en) * | 2011-11-30 | 2012-08-08 | 河北瑞晶康生物科技有限公司 | Desulfurizer for fuel coal flue gas |
| CN202506310U (en) * | 2012-04-26 | 2012-10-31 | 江苏天楹环保能源股份有限公司 | Garbage-incinerated flue gas purification-combined deacidification system |
| CN202715319U (en) * | 2012-05-23 | 2013-02-06 | 金华华东环保设备有限公司 | Flue gas collecting, treating and detecting and controlling system for small-sized sintering furnace |
| CN105889960A (en) * | 2014-12-14 | 2016-08-24 | 无锡市华星电力环保修造有限公司 | Flue gas desulfurization device for coal-fired boiler |
Non-Patent Citations (1)
| Title |
|---|
| 刘清: "《大气污染防治 共享一片蓝天》", 30 April 2012 * |
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Application publication date: 20190705 |