CN206184233U - Boiler gas cleaning system - Google Patents
Boiler gas cleaning system Download PDFInfo
- Publication number
- CN206184233U CN206184233U CN201621251264.5U CN201621251264U CN206184233U CN 206184233 U CN206184233 U CN 206184233U CN 201621251264 U CN201621251264 U CN 201621251264U CN 206184233 U CN206184233 U CN 206184233U
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- tower
- wet
- tray
- dust
- flue gas
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model provides a boiler gas cleaning system, at first carries heat transfer to the heat exchanger in from furnace exhaust flue gas, and the flue gas after the heat transfer is handled with the desulfurizing tower after the chimney is discharged through bag type dust collector, and the system still includes the denitration treatment part, and the denitration treatment part includes ammonia tank, ammonia tank pipe connection flue, the tray tower of desulfurizing tower for being equipped with the tray, the upper portion of tray is spray zone, and tray top of the tower portion establishes wet -type electricity dust removal part spare, and after wet -type electricity dust removal part spare carried out once more dust lowering processing, waste gas was followed the chimney is discharged. This system adopts the desulfurization of tray tower, wet -type electrostatic precipitator to remove dust and three kinds of mode of processings of aqueous ammonia SNCR denitration, can control SO2 below 35 mgNm3 under 6% condition of benchmark oxygen content, and the dust emission control is controlled below 100mgNm3 at 5 mgNm3, NOx, accords with the requirement that minimum discharge optimization was reformed transform, and it is all low just to reform transform cost and use cost.
Description
Technical field
The utility model is related to boiler waste gas processing technology field, more particularly, to a kind of boiler flue gas purification system.
Background technology
Minimum discharge transformation refer to coal unit or 65 steam tons more than coal-burning boilers through technological transformation transform after significantly
Reduce major pollutants in flue gas（Flue dust, sulfur dioxide, nitrogen oxides）Concentration of emission process.Specific minimum discharge index
Refer to major pollutants flue dust, sulfur dioxide, the concentration of emission of nitrogen oxides in coal unit flue gas, in benchmark oxygen content 6%
Under part, it is higher than 5,35,50 milligrams/cubic metre that must not distinguish, the nitrogen oxides row of " W " type flame boiler and CFBB
Put concentration and be not higher than 100 milligrams/cubic metre.Simultaneously according to the requirement of related place administrative regulation, before the end of the year 2018, its administrative area
More than 100,000 kilowatts of coal unit is fully completed minimum discharge transformation and requires in domain.
3 130 ton hour recirculating fluidized bed steam boilers are had in certain company, with 2 fume desulfurizing towers are built, keep 1 to open 1
It is standby, while installing on-line monitoring system.Existing sulfur removal technology is：The outer lime stone gypsum wet of desulfuration in furnace+stove, boiler body is adopted
With low-NO_x combustion technology, its amount of nitrogen oxides is reduced, and depositing dust treatment is carried out through bag-type dust equipment.Current boiler is 70%
Load operation operating mode under, sulfur dioxide in flue gas discharge mean concentration 45（±15）mg/m3, discharged nitrous oxides are averagely dense
Degree is 67（±12）mg/m3, flue dust class discharge mean concentration is 15（±1.5）mg/m3, not yet reach the row of minimum discharge transformation
Limit value requirement is put, and transformation difficult point is the treatment of flue gas depositing dust.
The content of the invention
The purpose of this utility model is to overcome shortcoming present in prior art, there is provided a kind of boiler flue gas purification system
System, the system ensures emission compliance by three kinds of fume treatment modes, and the technical scheme of use is：A kind of boiler flue gas purification system
System, the flue gas discharged from burner hearth exchanges heat in being firstly transferred to heat exchanger, and the flue gas after heat exchange is through fiber bag precipitator and desulfurizing tower
Discharged through chimney after treatment, it is characterised in that：The system also includes denitration process part, and the denitration process part includes ammonia
Water pot, the ammonia water tank pipeline connects the flue；The desulfurizing tower is the pallet tower for being provided with pallet, and the top of pallet is spray
Area, pallet tower top sets wet-esp part, is carried out through the wet-esp part after depositing dust is processed again, and waste gas is from institute
State chimney discharge.
Technical characteristic of the present utility model also has：The cleaning system also includes desulfuration in furnace part, the desulfuration in furnace
Part includes that pipeline connects the limestone powder bin of burner hearth bottom.
Technical characteristic of the present utility model also has：Pipeline between the ammonia water tank and flue is provided with booster pump.
The beneficial effects of the utility model are：The system uses pallet tower desulfurization, wet electrical dust precipitator dedusting and ammoniacal liquor
Three kinds of processing modes of SNCR denitration, can be by SO under the conditions of benchmark oxygen content 6%2Control is in 35 mg/Nm3Hereinafter, dust emission control
System is in 5 mg/Nm3, NOx controls are in 100mg/Nm3Hereinafter, meet the requirement of minimum discharge Optimizing Reconstruction, and improvement cost and make
It is low with cost.
Brief description of the drawings
Accompanying drawing 1 is the utility model structural representation, wherein 1 is recirculating fluidized bed steam boiler, 2 is limestone powder bin, 3
It is coal bunker, 4 is ammonia water tank, and 5 is high pressure positive blower, and 6 is fiber bag precipitator, and 7 is primary air fan, and 8 is overfire air fan, and 9 is desulfurization
Tower, 10 is wet-esp part, and 11 is chimney, and 12 is air-introduced machine.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.The utility model discloses one kind
Boiler flue gas purification system, the flue gas discharged from burner hearth exchanges heat in being firstly transferred to heat exchanger, and the flue gas after heat exchange is through cloth-bag type
Deduster 6 and desulfurizing tower 9 are discharged after processing through chimney, and the system can complete three kinds of purified treatments to flue gas, respectively desulfurization
Treatment, dedirt treatment and denitrogenation processing.
Desulfurization process：
Desulfurizing tower desulfurization process：Desulfurizing tower 9 is the pallet tower for being provided with pallet, and the top of pallet is spraying zone, and pallet can be strong
Change contact of the flue gas with slurries, play a part of to strengthen distributing disc.
Desulfuration in furnace：Desulfuration in furnace part includes that pipeline connects the limestone powder bin 2 of burner hearth bottom.
Dedirt treatment：Pallet tower top sets wet-esp part 10, and depositing dust again is carried out through wet-esp part 10
After treatment, waste gas is discharged from chimney 11.
Denitration process：Denitration process part includes ammonia water tank 4, the pipeline of ammonia water tank 4 connection flue, ammonia water tank 4 and flue it
Between pipeline be provided with booster pump.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
Change, remodeling, addition or replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In protection domain of the present utility model.
Claims (3)
1. a kind of boiler flue gas purification system, from the flue gas of burner hearth discharge be firstly transferred to heat exchanger in exchange heat, the cigarette after heat exchange
Gas is discharged after being processed through fiber bag precipitator and desulfurizing tower through chimney, it is characterised in that：The system also includes denitration process portion
Point, the denitration process part includes ammonia water tank, and the ammonia water tank pipeline connects flue；The desulfurizing tower is the support for being provided with pallet
Pan Ta, the top of pallet is spraying zone, and pallet tower top sets wet-esp part, carried out again through the wet-esp part
After secondary depositing dust treatment, waste gas is discharged from the chimney.
2. according to the cleaning system described in claim 1, it is characterised in that：The cleaning system also includes desulfuration in furnace part,
The desulfuration in furnace part includes that pipeline connects the limestone powder bin of burner hearth bottom.
3. according to the cleaning system described in claim 1, it is characterised in that：Pipeline between the ammonia water tank and flue is provided with
Booster pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621251264.5U CN206184233U (en) | 2016-11-22 | 2016-11-22 | Boiler gas cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621251264.5U CN206184233U (en) | 2016-11-22 | 2016-11-22 | Boiler gas cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206184233U true CN206184233U (en) | 2017-05-24 |
Family
ID=58726409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621251264.5U Active CN206184233U (en) | 2016-11-22 | 2016-11-22 | Boiler gas cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206184233U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525485A (en) * | 2018-06-14 | 2018-09-14 | 山东焦化技术咨询服务有限公司 | A kind of cock-oven gas purifying system and method for dust minimum discharge |
| CN109647158A (en) * | 2019-02-28 | 2019-04-19 | 兖矿集团有限公司 | A kind of circulating fluidized bed boiler flue gas desulfurization and denitrification system and its processing method |
-
2016
- 2016-11-22 CN CN201621251264.5U patent/CN206184233U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525485A (en) * | 2018-06-14 | 2018-09-14 | 山东焦化技术咨询服务有限公司 | A kind of cock-oven gas purifying system and method for dust minimum discharge |
| CN109647158A (en) * | 2019-02-28 | 2019-04-19 | 兖矿集团有限公司 | A kind of circulating fluidized bed boiler flue gas desulfurization and denitrification system and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 277500 station of Mushi Town, Tengzhou City, Shandong Province (Mushi Industrial Park) Patentee after: Lianhong New Materials Technology Co., Ltd. Address before: 277527 Tengzhou City, Shandong province Lunan high tech chemical industrial park Patentee before: Union new materials Co., Ltd. |
|
| CP03 | Change of name, title or address |