CN206660922U - A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means - Google Patents
A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means Download PDFInfo
- Publication number
- CN206660922U CN206660922U CN201720433836.XU CN201720433836U CN206660922U CN 206660922 U CN206660922 U CN 206660922U CN 201720433836 U CN201720433836 U CN 201720433836U CN 206660922 U CN206660922 U CN 206660922U
- Authority
- CN
- China
- Prior art keywords
- flue
- removing means
- flue gas
- power plant
- coal
- 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.)
- Active
Links
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000003546 flue gas Substances 0.000 title claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000007921 spray Substances 0.000 claims abstract description 16
- 239000012717 electrostatic precipitator Substances 0.000 claims description 11
- 230000003009 desulfurizing effect Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 abstract description 17
- 239000002250 absorbent Substances 0.000 abstract description 17
- 230000004580 weight loss Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 241001625808 Trona Species 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 238000005367 electrostatic precipitation Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means.SO should be carried3The Weight loss feeder bottom of the coal-fired power plant flue gas processing device of removing means is connected with main pipeline, and the air of pressure fan is sent into main pipeline after dried-air drier is dried, using alkaline absorbent of the Geldart-D particle from Weight loss feeder；Main pipeline terminal is connected with separator, and main pipeline is uniformly divided into multiple branch roads by separator, and each branch road connects a spray gun；Spray gun is evenly arranged in flue cross section, and installs static mixer in the downstream flue of spray gun, ensures that the alkaline absorbent of lance ejection uniformly mixes with flue gas.According to different flue gas conditions and flue position, different types of alkaline absorbent is selected, alkaline absorbent is sprayed into flue by spray gun and absorbs SO in flue gas3, reduce SO3Harm to power plant's operation, realizes SO3Minimum discharge.
Description
Technical field
It the utility model is related to coal-fired flue-gas process field, more particularly to a kind of thermoelectricity with sulfur trioxide removing means
Factory's coal-fired flue-gas processing unit.
Background technology
SO3（Sulfur trioxide）Formation mechanism mainly include with lower part, it is a part of in coal in the combustion process of burner hearth
Element sulphur is converted into SO3；Flue gas is made in back-end surfaces heat transfer process by the catalysis oxidation of metal pipe-wall, flying dust
With a part of SO2SO can be oxidized to3；Unit for increasing SCR denitration device newly, denitrating catalyst also have very strong catalysis
Oxidation so that a part of SO2It is oxidized to SO3.Generally for the coal unit for not installing denitrification apparatus, SO3Production rate
Account for the 1% of total sulfur content；Unit for installing SCR denitration device, SO3Production rate it is higher, can generally account for total sulfur content
1.5-2%.
SO2And NOXIt is one of atmosphere pollution main in coal-fired plant flue gas, in order to reduce NOXDischarge, coal-fired electricity
Factory is mounted with SCR denitration device mostly.SCR catalyst is there is a possibility that part SO2It is catalytically oxidized to SO3, plus what is generated in stove
SO3, make SO3Reach finite concentration, power plant is damaged, such as make catalyst poisoning, air preheater blocking, boiler flue corrosion etc..It is quiet
Electric cleaner and wet desulfuration tower are to SO3Removing it is limited in one's ability, SO3Be discharged into air and can aggravate haze, cause environment
Pollution.In burning high sulfur coal, SO3The problem of causing is more serious.Realize SO3Deep removal, the safety economy of power plant is transported
The improvement of row and atmospheric environment is significant.
In order to reduce SO3The harm brought to power plant's operation and control SO3Discharge, it is more at present using being sprayed into flue
Enter the method for alkaline absorbent.A kind of device and technique that sulfur trioxide in flue gas is removed using trona, from SCR reactor outlets
Flue gas absorbs SO through trona slurries hydro-peening3, enter back into air preheater；The device of sulfur trioxide in a kind of removing flue gas, bag
Feed bin, screw(-type) feeder are included, ejecting gun, Benitration reactor and spoiler etc., absorbs denitration reaction by spraying strong alkaline substance
SO before device3；A kind of method of sulfur trioxide in removing coal-fired flue-gas, into the flue before denitrification apparatus entrance point, denitration
A certain amount of alkali grain is sprayed in the flue gas in flue between the device port of export and air preheater, by three in flue gas
Sulfur oxide removes.Although the above method can control SO to a certain degree3Discharge, but different flue gas bars can not be successfully managed
SO under part3Removing, it is impossible to reach SO well3The requirement of minimum discharge.
SO at present3Main removing means are Wet Flue Gas Desulfurization Technique, wet static dedusting technology etc., but above-mentioned technology is arranged
After electrostatic precipitation, it is ensured that reduce final SO3Concentration discharge, but SO can not be eliminated3To front end denitrification apparatus, sky
The harm of pre- device.
Utility model content
In order to solve the above technical problems, the utility model devises a kind of thermal power plant's combustion with sulfur trioxide removing means
Coal smoke Flash Gas Compression Skid System.
The utility model adopts the following technical scheme that：
A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means, including SCR reactors, air are pre-
Hot device, electrostatic precipitator and desulfurizing tower, connected between SCR reactors, air preheater, electrostatic precipitator and desulfurizing tower by flue
Logical, flue of the smoke inlet to the flue between SCR reactors between flue A, SCR reactor and air preheater is flue
B, the flue between air preheater and electrostatic precipitator are flue C, and the flue between electrostatic precipitator and desulfurizing tower is flue
SO is respectively arranged with D, flue A, flue B, flue C and flue D3Removing means, SO3Removing means includes blower fan, is air-dried
Machine, feed bin, loss-in-weight feeders, main pipeline, separator and lateral, blower and pipeline connection dried-air drier, feed bin
Bottom connects loss-in-weight feeders, and loss-in-weight feeders connect main pipeline, main pipeline end side by side by pipeline with dried-air drier
End connection separator, separator connect more laterals, and every lateral is respectively penetrated inside flue, every lateral
End is connected with spray gun.
Preferably, the spray gun is evenly arranged in flue cross section.
Preferably, the feed bin is sealing device, feed bin is built with drying device.
Compared with prior art, should the weight-loss type with the coal-fired power plant flue gas processing device of sulfur trioxide removing means
Batcher bottom is connected with main pipeline, and the air of pressure fan is sent into main pipeline after dried-air drier is dried, using Geldart-D particle
Alkaline absorbent from Weight loss feeder；Main pipeline terminal is connected with separator, and main pipeline is uniformly divided into more by separator
Individual branch road, each branch road connect a spray gun；Spray gun is evenly arranged in flue cross section, and quiet in the downstream flue installation of spray gun
State blender, ensure that the alkaline absorbent of lance ejection uniformly mixes with flue gas.According to different flue gas conditions and flue position,
Different types of alkaline absorbent is selected, alkaline absorbent is sprayed into flue by spray gun and absorbs SO in flue gas3, reduce SO3
Harm to power plant's operation, realizes SO3Minimum discharge.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
In figure：1st, blower fan, 2, dried-air drier, 3, feed bin, 4, loss-in-weight feeders, 5, main pipeline, 6, separator, 7, point
Branch pipe(tube), 8, spray gun, 9, flue A, 10, SCR reactors, 11, flue B, 12, air preheater, 13, flue C, 14, electrostatic removes
Dirt device, 15, flue D, 16, desulfurizing tower.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically to retouch
State：
Embodiment：As shown in Figure 1, a kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means,
Including SCR reactors, air preheater, electrostatic precipitator and desulfurizing tower, SCR reactors 10, air preheater 12, electrostatic precipitation
Connected between device 14 and desulfurizing tower 16 by flue, smoke inlet to the flue between SCR reactors is flue A9, SCR reaction
Flue between device and air preheater is flue B11, and the flue between air preheater and electrostatic precipitator is flue C13,
Flue between electrostatic precipitator and desulfurizing tower is flue D15, and SO is respectively arranged with flue A, flue B, flue C and flue D3
Removing means, SO3Removing means includes blower fan 1, dried-air drier 2, feed bin 3, loss-in-weight feeders 4, main pipeline 5, separator 6
With lateral 7, blower and pipeline connection dried-air drier, bin bottom connection loss-in-weight feeders, loss-in-weight feeders
Main pipeline, main pipeline end connection separator are connected by pipeline side by side with dried-air drier, separator connects more branched pipes
Road, every lateral are respectively penetrated inside flue, and every lateral end is connected with spray gun 8, and spray gun is evenly arranged in cigarette
On road section, feed bin is sealing device, and feed bin is built with drying device.
This carries the coal-fired power plant flue gas processing device of sulfur trioxide removing means, in flue A SO3In removing means
Selection injection sodium base class absorbent (Na2CO3, NaHCO3, trona etc.)；In flue B SO3Selection injection magnesium in removing means
Base class absorbent (MgO, Mg (OH)2, MgCO3Magnesium etc.)；In flue C and flue D, selection injection calcium base class absorbent (CaO, Ca
(OH)2, CaCO3Deng).During burning high sulfur coal, alkaline absorbent removing SO is sprayed into flue A3, reduce SO3To the danger of catalyst
Evil；As the SO of SCR catalyst2/SO3When conversion ratio is higher, alkaline absorbent removing SO is sprayed into flue B3, reduce hydrogen sulfate
Harm of the generation of ammonia to air preheater；When main purpose is to reduce SO3Discharge and during corrosion to electric power factory equipment, in cigarette
Alkaline absorbent removing SO is sprayed into road C and flue D3, according to different flue gas conditions and flue position, select different types of
Alkaline absorbent, alkaline absorbent is sprayed into flue by spray gun and absorbs SO in flue gas3, reduce SO3To the danger of power plant's operation
Evil, realizes SO3Minimum discharge.
Embodiment described above is a kind of preferable scheme of the present utility model, not the utility model is made any
Formal limitation, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (3)
1. a kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means, including SCR reactors, air preheat
Device, electrostatic precipitator and desulfurizing tower, connected between SCR reactors, air preheater, electrostatic precipitator and desulfurizing tower by flue
Logical, flue of the smoke inlet to the flue between SCR reactors between flue A, SCR reactor and air preheater is flue
B, the flue between air preheater and electrostatic precipitator are flue C, and the flue between electrostatic precipitator and desulfurizing tower is flue
D, it is characterized in that, it is respectively arranged with SO at the flue A, flue B, flue C and flue D3Removing means, SO3Removing means includes
Blower fan, dried-air drier, feed bin, loss-in-weight feeders, main pipeline, separator and lateral, blower and pipeline connection are empty
Gas drying machine, bin bottom connection loss-in-weight feeders, loss-in-weight feeders connect master side by side by pipeline with dried-air drier
Pipeline, main pipeline end connection separator, separator connect more laterals, and every lateral is respectively penetrated in flue
Portion, every lateral end are connected with spray gun.
2. a kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means according to claim 1, its
It is characterized in, the spray gun is evenly arranged in flue cross section.
3. a kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means according to claim 1, its
It is characterized in, the feed bin is sealing device, and feed bin is built with drying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720433836.XU CN206660922U (en) | 2017-04-24 | 2017-04-24 | A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720433836.XU CN206660922U (en) | 2017-04-24 | 2017-04-24 | A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206660922U true CN206660922U (en) | 2017-11-24 |
Family
ID=60375681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720433836.XU Active CN206660922U (en) | 2017-04-24 | 2017-04-24 | A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206660922U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434950A (en) * | 2018-03-15 | 2018-08-24 | 东南大学 | A kind of devices and methods therefor of the evaporation of coordinated desulfurization waste water flue and enhancing fine particle and sulfur trioxide removing |
| CN108607362A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of device removing sulfur trioxide and NOx in flue gas with integrated spraying system |
| CN108607361A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of integration spraying system |
-
2017
- 2017-04-24 CN CN201720433836.XU patent/CN206660922U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434950A (en) * | 2018-03-15 | 2018-08-24 | 东南大学 | A kind of devices and methods therefor of the evaporation of coordinated desulfurization waste water flue and enhancing fine particle and sulfur trioxide removing |
| CN108434950B (en) * | 2018-03-15 | 2021-11-02 | 东南大学 | A device and method for coordinating flue evaporation of desulfurization wastewater and enhancing the removal of fine particles and sulfur trioxide |
| CN108607362A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of device removing sulfur trioxide and NOx in flue gas with integrated spraying system |
| CN108607361A (en) * | 2018-07-05 | 2018-10-02 | 苏州西热节能环保技术有限公司 | A kind of integration spraying system |
| CN108607362B (en) * | 2018-07-05 | 2023-09-19 | 苏州西热节能环保技术有限公司 | Device with integrated injection system for removing sulfur trioxide and NOx in flue gas |
| CN108607361B (en) * | 2018-07-05 | 2023-09-19 | 苏州西热节能环保技术有限公司 | Integrated injection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106345244A (en) | Device and method for removing sulfur trioxide from coal-fired flue gas | |
| CN110756033A (en) | Deep purification treatment system and process for waste incineration power station flue gas | |
| CN209490672U (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN109364711A (en) | A flue gas system for ultra-clean treatment of cement kiln tail gas | |
| CN202478804U (en) | Sintering machine flue gas desulphurization denitration device | |
| CN105080332A (en) | Resource utilization system for pellet sintering waste gas and method | |
| CN205164488U (en) | Mixed flue gas wet flue gas desulfurization device of fire coal - catalysis | |
| CN104107627A (en) | Device and method for cooperative desulfurization, denitration, demercuration and dioxin removal of sintering flue gas by virtue of circulating fluidized bed semidry method | |
| CN206660922U (en) | A kind of coal-fired power plant flue gas processing device with sulfur trioxide removing means | |
| CN204996310U (en) | A coke oven flue gas desulfurization and denitrification combined purification device | |
| CN102921297A (en) | SCR denitrification device for dedusting smoke of cement kiln at high temperature | |
| CN205164417U (en) | Purification unit of high temperature flue gas | |
| CN108105761A (en) | Circulating fluidized bed boiler minimum discharge cooperative control method and system integration device | |
| CN209828672U (en) | Grate-rotary kiln SNCR/SCR denitration and active coke desulfurization combined system | |
| CN113559655A (en) | Comprehensive treatment system and method for biomass boiler flue gas | |
| CN109364747A (en) | Coke oven flue gas dedusting and desulfurizing system and process | |
| CN204952658U (en) | Sintering pelletizing flue gas resource system | |
| CN209530538U (en) | A kind of spray ammonia removal flue gas SO3System | |
| CN110813026A (en) | Flue gas SO with base injection and multi-stage humidification3Removal method | |
| CN208553733U (en) | A kind of system that base reagent removes sulfur trioxide in flue gas | |
| CN106178877A (en) | A coke oven flue exhaust gas purification waste heat recovery equipment and process | |
| CN110052155A (en) | A kind of Hg, SO3The system with low-low temperature ESP of cooperation-removal | |
| CN219580220U (en) | SDS desulfurization system suitable for low temperature flue gas | |
| CN211435702U (en) | Multi-pollutant integrated removing system of circulating fluidized bed boiler | |
| CN206152599U (en) | Coal -fired flue gas sulfur trioxide removing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |