CN106823711A - A kind of boiler smoke dusting and desulfuring system - Google Patents
A kind of boiler smoke dusting and desulfuring system Download PDFInfo
- Publication number
- CN106823711A CN106823711A CN201710071677.8A CN201710071677A CN106823711A CN 106823711 A CN106823711 A CN 106823711A CN 201710071677 A CN201710071677 A CN 201710071677A CN 106823711 A CN106823711 A CN 106823711A
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- tower
- desulfurization
- lime
- flue gas
- lime slurry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/126—Semi-solid reactants, e.g. slurries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of boiler smoke dusting and desulfuring system, belong to flue gas desulfurization environmental protection technical field, including the desulfurizing tower being sequentially connected, air-introduced machine and chimney, desulfurizing tower is made up of desulfurization king-tower and desulfurization secondary tower, the top of desulfurization king-tower is connected with the top of desulfurization secondary tower, desulfurization king-tower bottom is provided with flue gas inlet pipe, the bottom of desulfurization secondary tower is provided with flue gas outlet pipe, flue gas outlet pipe is connected with air-introduced machine, desulfurization king-tower bottom is provided with moisture film processor, moisture film processor is arranged on the top of flue gas inlet pipe, desulfurization king-tower bottom sets lime slurry discharge pipe, lime slurry discharge pipe is connected with desulphurization circulating pond and lime slurry concentration cycles device respectively, desulphurization circulating pond is connected with multistage lime slurry shower.Boiler smoke dusting and desulfuring system in the present invention can effectively remove SO3, the pernicious gas such as chloride and fluoride, removal efficiency is up to more than 95%.
Description
Technical field
The present invention relates to flue gas desulfurization environmental protection technical field, more particularly to a kind of boiler smoke dusting and desulfuring system.
Background technology
Within one considerably long period of current and expected future, the energy resource structure of China is the discharged from coal-fired boiler based on coal
Flue gas contain substantial amounts of SO2, the pollution to environment causes huge injury.
SO2Discharge capacity increases severely makes most cities SO2Concentration is in level of pollution higher.SO2The increase of discharge capacity, makes
The acid rain of China increases abnormal rapid, serious acid precipitation and the ecosystem of fragility makes China's economic loss serious, only acid
Rain pollutes the direct economic loss caused to forest and crops up to hundreds of hundred million yuan.If do not controlled strictly, China SO2Discharge
Amount will continue to increase, SO2With Acid Rain Pollution by serious harm residents ' health, corrode construction material, destroy the ecosystem, cause huge
Big economic loss.According to statistics, Chinese SO2The SO that annual emissions have been produced more than ten thousand tons of 1600-1800, fire coal2Account for the overwhelming majority,
The wherein SO of coal-fired plant boiler discharge2Account for the 1/4 of total release, the SO of middle and small burn coal boiler discharge2Account for total release
Nearly 40%.The atmosphere pollution character of China is also due to coal-smoke pollution that is a large amount of coal-fired and being formed, therefore, for coal-burning boiler
For, significantly cut down SO2Pollution is extremely urgent.
Sulfur removal technology at present in the world is a lot, including limestone/lime-gypsum wet processing, magnesium processes sulfur removal technology, sodium
Alkali method desulfurizing technology, Analyss of Desulphurization Technology of Flue Gas Recirculation Fluid-bad, ammonia process technique etc., in these sulfur removal technologies, with lime stone/stone
Ash-gypsum wet technique it is most widely used, market occupancy is more than 80%.
In process for flue gas desulfurization by limestone/lime-gypsum wet technique, mainly there are spray column, liquid column tower and bubble tower at present,
The application on these three absorption towers all compares many, is especially most widely used in spray void tower.But, bubble tower does not apply to sulfur-bearing high
Flue gas, the application of liquid column tower is relatively more, especially sprays void tower and is most widely used.But bubble tower does not apply to sulfur-bearing cigarette high
Gas, liquid column tower is too poor to the regulation performance of load, and spray column is mainly the quantity for being continuously increased spraying layer using strategy, so that
It is continuously increased the height on absorption tower, it is ensured that desulfuration efficiency, corresponding construction costs will necessarily be increased.
The content of the invention
The invention provides a kind of boiler smoke dusting and desulfuring system, existing spray column is solved due to being continuously increased spraying layer
Quantity, the problem of height so as to be continuously increased absorption tower.
In order to solve the above technical problems, the technical proposal of the invention is realized in this way：
A kind of boiler smoke dusting and desulfuring system, including desulfurizing tower, air-introduced machine and the chimney being sequentially connected, the desulfurizing tower
It is made up of desulfurization king-tower and desulfurization secondary tower, the top of the desulfurization king-tower is connected with the top of the desulfurization secondary tower, it is described de-
Sulphur king-tower bottom is provided with flue gas inlet pipe, and the bottom of the desulfurization secondary tower is provided with flue gas outlet pipe, the flue gas outlet pipe with it is described
Air-introduced machine is connected, and the desulfurization king-tower bottom is provided with moisture film processor, and the moisture film processor is arranged on the flue gas inlet pipe
Top, the desulfurization king-tower bottom is provided with grey ditch, and the grey ditch is communicated with sedimentation basin, the supernatant of the sedimentation basin
Moisture film processor is driven into by clarified water pump, the desulfurization king-tower top is provided with multistage lime slurry shower, the desulfurization
Dehydrator is provided with secondary tower；
The desulfurization king-tower bottom sets lime slurry discharge pipe, the lime slurry discharge pipe respectively with desulphurization circulating pond
With the connection of lime slurry concentration cycles device, the desulphurization circulating pond is connected with the multistage lime slurry shower.
Wherein it is preferred to, the desulphurization circulating pond is also connected with lime slurry supply system.
Wherein it is preferred to, the lime slurry supply system includes the lime storage tank, screw conveyor, the stone that are sequentially connected
Grey breast reservoir and milk of lime pump, the milk of lime slurries in the milk of lime reservoir are squeezed into the desulfurization and are followed by the milk of lime pump
In cisterna ambiens.
Wherein it is preferred to, the lime slurry concentration cycles device includes concentration basin, vacuum filter mechanism and reservoir,
The supernatant of the concentration basin is squeezed into the reservoir by pipeline.
Wherein it is preferred to, the filtrate in the reservoir is squeezed into the lime storage tank by filtrate pump.
Wherein it is preferred to, the lime storage tank is connected with boiler blow-off water pipe.
Wherein it is preferred to, the sedimentation basin is three-level sedimentation basin, and first baffle is respectively arranged between adjacent sedimentation basin
And second baffle, first plate washer highly be slightly above the second baffle.
Wherein it is preferred to, it is provided with lime slurry between the multistage lime slurry shower and the moisture film processor
Catch tray, the lime slurry discharge pipe is connected with the grey slurry collecting disc.
Wherein it is preferred to, also including heat-exchange device, the flue gas inlet pipe and the flue gas outlet pipe are handed over the heat respectively
Changing device is connected.
Beneficial effect of the present invention：
Absorption tower of the invention is made up of desulfurization king-tower and desulfurization secondary tower, and lime slurry shower is set in desulfurization king-tower,
Dehydrator is provided with desulfurization secondary tower, is not only extended flue gas and is circulated in absorption tower length, also effectively reduce adsorption tower
Height.Grey ditch under adsorption tower connects with multifeed clarifier, and the water for dedusting of lowering the temperature is recycled reuse, saves energy
Source.
Boiler smoke dusting and desulfuring system in the present invention can effectively remove SO3, harmful gas such as chloride and fluoride
Body, removal efficiency is up to more than 95%.And the smoke moisture of discharge is relatively low, thus flue, chimney to reaction tower and downstream
It is smaller Deng equipment corrosion, smoke re-heater can not be used, preservative treatment can not be carried out to existing chimney, directly use dry cigarette
Chimney discharges desulfurization fume.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is boiler smoke dusting and desulfuring system process chart in the present invention.
In figure, 1. desulfurizing tower, 1-1. desulfurization king-towers, 1-2. desulfurization secondary towers, 3. air-introduced machine, 4. chimney, 5. flue gas inlet pipe, 6.
Flue gas outlet pipe, 7. moisture film processor, 8. multistage lime slurry shower, 9. dehydrator, 10. lime slurry discharge pipe, 11. desulfurization
Circulatory pool, 12. lime storage tanks, 13. screw conveyors, 14. milk of lime reservoirs, 15. concentration basins, 16. vacuum filter mechanisms, 17.
Reservoir, 18. filtrate pumps, 19. boiler blow-off water pipes, 20. first baffles, 21. second baffles, 22. lime slurry catch trays,
23. sedimentation basins, 24. grey ditches, 25. heat-exchange devices
Specific embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
As shown in figure 1, the present embodiment provides a kind of boiler smoke dusting and desulfuring system, including be sequentially connected desulfurizing tower 1,
Air-introduced machine 3 and chimney 4, the desulfurizing tower 1 are made up of desulfurization king-tower 1-1 and desulfurization secondary tower 1-2, the top of the desulfurization king-tower 1-1
Portion is connected with the top of the desulfurization secondary tower 1-2, and the desulfurization king-tower 1-1 bottoms are provided with flue gas inlet pipe 5, the desulfurization pair
The bottom of tower 1-2 is provided with flue gas outlet pipe 6, and the flue gas outlet pipe 6 is connected with the air-introduced machine 3, the desulfurization king-tower 1-1 bottoms
Moisture film processor 7 is provided with, the moisture film processor 7 is arranged on the top of the flue gas inlet pipe 5, the desulfurization king-tower 1-1 bottoms
Portion is provided with grey ditch 24, and the grey ditch 24 is communicated with sedimentation basin 23, and the supernatant of the sedimentation basin 23 is beaten by clarified water pump
Enter to moisture film processor 7, the desulfurization king-tower 1-1 tops are provided with multistage lime slurry shower 8, the desulfurization secondary tower 1-2
Inside it is provided with dehydrator 9；Absorption tower is made up of desulfurization king-tower 1-1 and desulfurization secondary tower 1-2, and lime white is set in desulfurization king-tower 1-1
Liquid shower, dehydrator 9 is provided with desulfurization secondary tower 1-2, is not only extended flue gas and is circulated in absorption tower length, also effectively
Reduce the height of adsorption tower.Grey ditch 24 under adsorption tower is connected with multifeed clarifier 23, and the water for dedusting of lowering the temperature can be followed
Ring is reused, save energy.In the present invention, according to SO in flue gas2Content can be appropriate increase grey slurries shower
Level level, reaches SO in effectively removal flue gas2Effect.
The desulfurization king-tower 1-1 bottoms set lime slurry discharge pipe 10, the lime slurry discharge pipe 10 respectively with it is de-
Sulfur cycle pond 11 and the connection of lime slurry concentration cycles device, the desulphurization circulating pond 11 and the multistage lime slurry shower
8 connections.
Wherein, the desulphurization circulating pond 11 is also connected with lime slurry supply system.The lime slurry supply system bag
Lime storage tank 12, screw conveyor 13, milk of lime reservoir 14 and the milk of lime pump being sequentially connected are included, in the milk of lime reservoir 14
Milk of lime slurries squeezed into the desulphurization circulating pond 11 by the milk of lime pump.
Wherein, the lime slurry concentration cycles device includes concentration basin 15, vacuum filter mechanism 16 and reservoir 17, institute
The supernatant for stating concentration basin 15 is squeezed into the reservoir 17 by pipeline.
Wherein, the filtrate in the reservoir 17 is squeezed into the lime storage tank 12 by filtrate pump 18, is used as lime white
The solvent of liquid, reduces the consumption of water, the energy-conservation energy.
Wherein, the lime storage tank 12 is connected with boiler blow-off water pipe 19.The water of boiler blow-off water pipe 19 can repeat profit
With entering any and save the energy.
Wherein, the sedimentation basin 23 is three-level sedimentation basin, and first baffle 20 is respectively arranged between adjacent sedimentation basin 23
With second baffle 21, first plate washer highly be slightly above the second baffle 21.The setting makes the easy precipitate and separate of buck, can be big
The big investment for reducing Ash Water Separator.Also, the clear water of precipitation is circularly used for moisture film processor 7, save energy.
Wherein, it is provided with lime slurry catch tray between the multistage lime slurry shower 8 and the moisture film processor 7
22, the lime slurry discharge pipe 10 is connected with the grey slurry collecting disc.
The flue-gas temperature of flue gas inlet pipe 5 is higher, is unfavorable for spray-absorption SO2, and the flue-gas temperature of flue gas outlet pipe 6 is relatively low,
Easily make the fouling of chimney 4, corrosion, the drawbacks of in order to improve these two aspects, hot friendship is provided with flue gas inlet pipe 5 and flue gas outlet pipe 6
Changing device 25, the flue gas inlet pipe 5 and the flue gas outlet pipe 6 are connected with the heat-exchange device 25 respectively.
The system is particularly adapted to the purified treatment of high sulfur-containing smoke gas of the sulfur-bearing more than 3.5%, it is ensured that desulfuration efficiency can
To reach more than 95%.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (9)
1. a kind of boiler smoke dusting and desulfuring system, it is characterised in that：Including the desulfurizing tower, air-introduced machine and the chimney that are sequentially connected,
The desulfurizing tower is made up of desulfurization king-tower and desulfurization secondary tower, and the top of the desulfurization king-tower is connected with the top of the desulfurization secondary tower
Logical, the desulfurization king-tower bottom is provided with flue gas inlet pipe, and the bottom of the desulfurization secondary tower is provided with flue gas outlet pipe, and the flue gas goes out
Pipe is connected with the air-introduced machine, and the desulfurization king-tower bottom is provided with moisture film processor, and the moisture film processor is arranged on described
The top of flue gas inlet pipe, the desulfurization king-tower bottom is provided with grey ditch, and the grey ditch is communicated with sedimentation basin, the sedimentation basin
Supernatant moisture film processor is driven into by clarified water pump, the desulfurization king-tower top is provided with multistage lime slurry shower,
Dehydrator is provided with the desulfurization secondary tower；
The desulfurization king-tower bottom sets lime slurry discharge pipe, the lime slurry discharge pipe respectively with desulphurization circulating pond and stone
Grey slurries concentration cycles device connection, the desulphurization circulating pond is connected with the multistage lime slurry shower.
2. a kind of boiler smoke dusting and desulfuring system according to claim 1, it is characterised in that：The desulphurization circulating pond is also
It is connected with lime slurry supply system.
3. a kind of boiler smoke dusting and desulfuring system according to claim 2, it is characterised in that：The lime slurry supply
System includes the lime storage tank, screw conveyor, milk of lime reservoir and the milk of lime pump that are sequentially connected, in the milk of lime reservoir
Milk of lime slurries are squeezed into the desulphurization circulating pond by the milk of lime pump.
4. a kind of boiler smoke dusting and desulfuring system according to claim 3, it is characterised in that：The lime slurry concentration
EGR includes concentration basin, vacuum filter mechanism and reservoir, and the supernatant of the concentration basin squeezes into the filter by pipeline
In liquid pool.
5. a kind of boiler smoke dusting and desulfuring system according to claim 4, it is characterised in that：Filter in the reservoir
Liquid is squeezed into the lime storage tank by filtrate pump.
6. a kind of boiler smoke dusting and desulfuring system according to claim 2, it is characterised in that：The lime storage tank connection
There is boiler blow-off water pipe.
7. a kind of boiler smoke dusting and desulfuring system according to claim 1, it is characterised in that：The sedimentation basin is three-level
Sedimentation basin, is respectively arranged with first baffle and second baffle between adjacent sedimentation basin, first plate washer is highly slightly above institute
State second baffle.
8. a kind of boiler smoke dusting and desulfuring system according to claim 1, it is characterised in that：The multistage lime slurry
Lime slurry catch tray, the lime slurry discharge pipe and the grey slurries are provided between shower and the moisture film processor
Catch tray is connected.
9. according to a kind of boiler smoke dusting and desulfuring system described in claim 1, it is characterised in that：Also include heat-exchange device,
The flue gas inlet pipe and the flue gas outlet pipe are connected with the heat-exchange device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071677.8A CN106823711A (en) | 2017-02-09 | 2017-02-09 | A kind of boiler smoke dusting and desulfuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071677.8A CN106823711A (en) | 2017-02-09 | 2017-02-09 | A kind of boiler smoke dusting and desulfuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106823711A true CN106823711A (en) | 2017-06-13 |
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ID=59121688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710071677.8A Pending CN106823711A (en) | 2017-02-09 | 2017-02-09 | A kind of boiler smoke dusting and desulfuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862412A (en) * | 2018-06-27 | 2018-11-23 | 河南禾力能源股份有限公司 | A kind of boiler dusting water circulation use and sediment processing unit |
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| CN2577940Y (en) * | 2002-11-06 | 2003-10-08 | 清华同方股份有限公司 | Liquid column jet desulfurizing dust-removing integral devices |
| CN1923339A (en) * | 2006-08-18 | 2007-03-07 | 浙江天蓝脱硫除尘有限公司 | Fume desulfurizing process with enhancement lime method |
| CN101716454A (en) * | 2009-12-17 | 2010-06-02 | 航天环境工程有限公司 | Process for desulphurizing and dedusting catalytic cracking regenerated smoke |
| CN103028318A (en) * | 2012-11-23 | 2013-04-10 | 广东依科电力技术有限公司 | Cyclone plate tower desulfurizing unit and working method thereof |
| CN103768924A (en) * | 2014-02-20 | 2014-05-07 | 北京中能诺泰节能环保技术有限责任公司 | Method and device for further purifying wet desulfurization purified flue gas |
| CN205760566U (en) * | 2016-06-27 | 2016-12-07 | 山东淙汇工业科技有限公司 | Spiral-flow type water film desulfurization device |
-
2017
- 2017-02-09 CN CN201710071677.8A patent/CN106823711A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577940Y (en) * | 2002-11-06 | 2003-10-08 | 清华同方股份有限公司 | Liquid column jet desulfurizing dust-removing integral devices |
| CN1923339A (en) * | 2006-08-18 | 2007-03-07 | 浙江天蓝脱硫除尘有限公司 | Fume desulfurizing process with enhancement lime method |
| CN101716454A (en) * | 2009-12-17 | 2010-06-02 | 航天环境工程有限公司 | Process for desulphurizing and dedusting catalytic cracking regenerated smoke |
| CN103028318A (en) * | 2012-11-23 | 2013-04-10 | 广东依科电力技术有限公司 | Cyclone plate tower desulfurizing unit and working method thereof |
| CN103768924A (en) * | 2014-02-20 | 2014-05-07 | 北京中能诺泰节能环保技术有限责任公司 | Method and device for further purifying wet desulfurization purified flue gas |
| CN205760566U (en) * | 2016-06-27 | 2016-12-07 | 山东淙汇工业科技有限公司 | Spiral-flow type water film desulfurization device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862412A (en) * | 2018-06-27 | 2018-11-23 | 河南禾力能源股份有限公司 | A kind of boiler dusting water circulation use and sediment processing unit |
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Application publication date: 20170613 |