CN110052089A - A kind of Hg, SO3The sack cleaner of cooperation-removal - Google Patents

A kind of Hg, SO3The sack cleaner of cooperation-removal Download PDF

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Publication number
CN110052089A
CN110052089A CN201910255860.2A CN201910255860A CN110052089A CN 110052089 A CN110052089 A CN 110052089A CN 201910255860 A CN201910255860 A CN 201910255860A CN 110052089 A CN110052089 A CN 110052089A
Authority
CN
China
Prior art keywords
sack cleaner
removal
cooperation
flying dust
prilling granulator
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
Application number
CN201910255860.2A
Other languages
Chinese (zh)
Inventor
刘含笑
陈招妹
孟银灿
郭高飞
罗诗凯
吴金
沈敏超
骆建友
赵博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Feida Environmental Science and Technology Co Ltd
Original Assignee
Zhejiang Feida Environmental Science and Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Feida Environmental Science and Technology Co Ltd filed Critical Zhejiang Feida Environmental Science and Technology Co Ltd
Priority to CN201910255860.2A priority Critical patent/CN110052089A/en
Publication of CN110052089A publication Critical patent/CN110052089A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/508Sulfur oxides by treating the gases with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/64Heavy metals or compounds thereof, e.g. mercury
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81Solid phase processes
    • B01D53/82Solid phase processes with stationary reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/60Heavy metals or heavy metal compounds
    • B01D2257/602Mercury or mercury compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention proposes a kind of Hg, SO3The sack cleaner of cooperation-removal, the sack cleaner includes the flyash roughing device set gradually by burned-coal fly ash process flow direction, flying dust reforming apparatus, material blending and prilling granulator, storage bin, fluidic device, the bottom of the sack cleaner is equipped with several ash buckets, the output end of the ash bucket is connected with flyash roughing device, dry powder injection apparatus is installed on the fluidic device, the side wall of the sack cleaner is equipped with gas approach, the ejection end of the dry powder injection apparatus is connected with the gas approach of sack cleaner, the material blending and prilling granulator are also connected with active carbon injection device, calcium base alkaline matter injection device.By the modification to flying dust, and same active carbon, calcium base alkaline matter are sufficiently mixed granulation, spray into flue to Hg, SO in flue gas through injection apparatus3Equal pollutants carry out adsorption reaction and have both Hg, SO while with dedusting function3Efficient removal function.

Description

A kind of Hg, SO3The sack cleaner of cooperation-removal
[technical field]
The present invention relates to the technical field of purifying coal-fired flue gas, especially a kind of Hg, SO3The bag-type dusting of cooperation-removal Device.
[background technique]
The raising of coal-burning power plant's smoke contamination controlled level, to improving, urban air quality status in China's is most important.Mirror In the great environment of Particulate Pollution and social influence, three ministries and commissions such as National Development and Reform Committee, which combine, prints and distributes " coal electricity energy-saving and emission-reduction upgrading With transformation action plan (2014~the year two thousand twenty) ", clear stipulaties eastern region creates Thermal generation unit atmosphere pollution row It puts concentration and basically reaches gas turbine group standard limited value, i.e., under the conditions of benchmark oxygen content 6%, flue dust, SO2、NOxConcentration of emission point It Bu Gaoyu not 10mg/m3、35mg/m3、50mg/m3, west area new-built unit is encouraged to be close to or up to gas turbine group standard limit Value.Minimum discharge has become the theme of coal unit pollution control.
Artificial mercury emissions are mostly derived from fire coal, and coal is the main fuel energy of China, and coal fired power plant discharge becomes mercury Primary discharge source, resulting fire coal mercury pollution is increasingly by domestic concern.Compared to other pollutants, coal-burning boiler Discharge SO in flue gas3Concentration it is lower, but biggish harm can be generated to flue downstream equipment and atmospheric environment.SO3By spray Sulfuric acid mist can be formed in conjunction with steam after leaching tower, easily corrode the pipe-line equipment of flue tail.Flue gas discharge not up to standard is to make The main reason at air pollution.Coal-burning power plant is at present to SO3Removing with Hg is all that individual removing system is respectively adopted, very A kind of rare system can complete SO3It is removed with the joint of Hg, it is proposed that a kind of Hg, SO3The sack cleaner of cooperation-removal.
[summary of the invention]
The object of the invention is to solve the problems of the prior art, a kind of Hg, SO are proposed3The bag-type dusting of cooperation-removal Device has both Hg, SO while with dedusting function3Efficient removal function, and the secondary release of Hg can be prevented.
To achieve the above object, the invention proposes a kind of Hg, SO3The sack cleaner of cooperation-removal, the bag-type dusting Device include set gradually by burned-coal fly ash process flow direction flyash roughing device, flying dust reforming apparatus, material blending and The bottom of prilling granulator, storage bin, fluidic device, the sack cleaner is equipped with several ash buckets, the output end of the ash bucket It is connected with flyash roughing device, dry powder injection apparatus, the side wall of the sack cleaner is installed on the fluidic device Equipped with gas approach, the ejection end of the dry powder injection apparatus is connected with the gas approach of sack cleaner, and the material is mixed Mixed and prilling granulator is also connected with active carbon injection device, calcium base alkaline matter injection device.
Preferably, the sack cleaner is arranged between air preheater and desulfurizing tower, the sack cleaner Exhanst gas outlet is connected with the gas inlet of desulfurizing tower, by fume treatment flow direction boiler, SCR denitration system, air preheat Device, sack cleaner, desulfurizing tower, wet electrical dust precipitator and chimney are set gradually.
Preferably, grinding device and halogen saline solution injection device are equipped in the flying dust reforming apparatus, through fine coal Grey roughing device, which is ground by flying dust reforming apparatus after selecting coarse grained flying dust and is aided with the mixing of halogen saline solution, to be changed Property.
Preferably, the active carbon injection device, calcium base alkaline matter injection device are respectively material blending and are granulated Device provides active carbon, calcium base alkaline matter, via the modified flying dust of flying dust reforming apparatus in material blending and prilling granulator The output end and storage bin phase of granulation, the material blending and prilling granulator are sufficiently mixed with same active carbon, calcium base alkaline matter Even, the output end of the storage bin is connected with fluidic device.
Preferably, the fluidic device is blended with material and the output end of prilling granulator is connected, granulation will be sufficiently mixed Material be injected to gas approach via dry powder injection apparatus.
Preferably, the sack cleaner further includes a point gas tank, top loop wheel machine, walks ladder and air-channel system, the gas circuit System is connected with gas tank is divided.
Beneficial effects of the present invention: the present invention is by the modification to flying dust, and same active carbon, calcium base alkaline matter are sufficiently mixed Granulation is closed, sprays into flue to Hg, SO in flue gas through injection apparatus3Equal pollutants carry out adsorption reaction, absorbent particles and fly Ash can deposit one layer of muffin layer in filter bag surface together, work as SO3And gaseous state H2SO4It, can by powder when filter bag by having muffin layer Cake layer is effectively adsorbed, and is then neutralized by alkaline matter, and the zeroth order Hg of absorption is then oxidized to stable divalent Hg, prevents the two of Hg Secondary release.While with dedusting function, Hg, SO are had both3Efficient removal function.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is the present invention a kind of Hg, SO3The structural schematic diagram of the sack cleaner of cooperation-removal;
Fig. 2 is the present invention a kind of Hg, SO3The removing system schematic of the sack cleaner of cooperation-removal.
[specific embodiment]
A kind of Hg, SO of the invention refering to fig. 13The sack cleaner of cooperation-removal, the sack cleaner 4 include flying by coal-fired Flyash roughing device 8, flying dust reforming apparatus 9, material blending and the prilling granulator 10, storage that grey process flow direction is set gradually Feed bin 11, fluidic device 12, the bottom of the sack cleaner 4 are equipped with several ash buckets 41, the output end of the ash bucket 41 with Flyash roughing device 8 is connected, and dry powder injection apparatus 15 is equipped on the fluidic device 12, the sack cleaner 4 Side wall is equipped with gas approach 42, and the ejection end of the dry powder injection apparatus 15 is connected with the gas approach 42 of sack cleaner 4, The material blending and prilling granulator 10 are also connected with active carbon injection device 13, calcium base alkaline matter injection device 14.It is described Grinding device and halogen saline solution injection device are equipped in flying dust reforming apparatus 9, it will be coarse grained through flyash roughing device 8 Flying dust is ground after selecting by flying dust reforming apparatus 9 and to be aided with halogen saline solution mixed and modified.The active carbon injection dress Setting 13, calcium base alkaline matter injection device 14 is respectively that material blending and prilling granulator 10 provide active carbon, calcium base alkaline matter, It is filled in material blending and prilling granulator 10 with same active carbon, calcium base alkaline matter via the modified flying dust of flying dust reforming apparatus 9 Divide mixing granulation, the material blends and the output end of prilling granulator 10 is connected with storage bin 11, the output of the storage bin 11 End is connected with fluidic device 12.The fluidic device 12 is blended with material and the output end of prilling granulator 10 is connected, and will sufficiently be mixed The material for closing granulation is injected to gas approach 42 via dry powder injection apparatus 15.The sack cleaner 4 further include point gas tank 43, Top loop wheel machine 44, walk ladder 45 and air-channel system 46, the air-channel system 46 be connected with gas tank 43 is divided.
Further, referring to Fig.2, the sack cleaner 4 is arranged between air preheater 3 and desulfurizing tower 5, the bag The exhanst gas outlet of formula deduster 4 is connected with the gas inlet of desulfurizing tower 5, by fume treatment flow direction boiler 1, SCR denitration System 2, air preheater 3, sack cleaner 4, desulfurizing tower 5, wet electrical dust precipitator 6 and chimney 7 are set gradually.
The course of work of the present invention:
The present invention a kind of Hg, SO3The working principle of the sack cleaner of cooperation-removal are as follows: the fire coal that sack cleaner is collected Flying dust is ground after selecting coarse grained flying dust through flyash roughing device and to be aided with halogen (Halothane iodine etc.) salt water-soluble Liquid is mixed and modified, and same active carbon, calcium base alkaline matter are sufficiently mixed granulation, sprays into flue in flue gas through injection apparatus Hg、SO3Equal pollutants carry out adsorption reaction.
Absorbent particles can deposit one layer of muffin layer in filter bag surface together with flying dust, and the partial size of particle is relatively small, phase The muffin layer of stack pile has more adsorption specific surface areas, works as SO3And gaseous state H2SO4By have muffin layer filter bag when, meeting It is effectively adsorbed by muffin layer, is then neutralized by alkaline matter, the zeroth order Hg of absorption is then oxidized to stable divalent Hg, prevents and treats Hg Secondary release.Guarantee the 5 μ g/m of Hg concentration < of exiting flue gas3, SO3Less than 1ppm.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention Scheme all belong to the scope of protection of the present invention.

Claims (6)

1. a kind of Hg, SO3The sack cleaner of cooperation-removal, it is characterised in that: the sack cleaner (4) includes pressing burned-coal fly ash Flyash roughing device (8), flying dust reforming apparatus (9), material blending and the prilling granulator that process flow direction is set gradually (10), the bottom of storage bin (11), fluidic device (12), the sack cleaner (4) is equipped with several ash buckets (41), the ash The output end of bucket (41) is connected with flyash roughing device (8), is equipped with dry powder injection apparatus on the fluidic device (12) (15), the side wall of the sack cleaner (4) is equipped with gas approach (42), the ejection end and bag of the dry powder injection apparatus (15) The gas approach (42) of formula deduster (4) is connected, and the material blending and prilling granulator (10) are also connected with active carbon injection Device (13), calcium base alkaline matter injection device (14).
2. a kind of Hg, SO as described in claim 13The sack cleaner of cooperation-removal, it is characterised in that: the bag-type dusting Device (4) is arranged between air preheater (3) and desulfurizing tower (5), the exhanst gas outlet and desulfurizing tower of the sack cleaner (4) (5) gas inlet is connected, by fume treatment flow direction boiler (1), SCR denitration system (2), air preheater (3), bag Formula deduster (4), desulfurizing tower (5), wet electrical dust precipitator (6) and chimney (7) are set gradually.
3. a kind of Hg, SO as described in claim 13The sack cleaner of cooperation-removal, it is characterised in that: the flying dust is modified Grinding device and halogen saline solution injection device are equipped in device (9), through flyash roughing device (8) by coarse grained flying dust It is ground after selecting by flying dust reforming apparatus (9) and to be aided with halogen saline solution mixed and modified.
4. a kind of Hg, SO as claimed in claim 33The sack cleaner of cooperation-removal, it is characterised in that: the active carbon note Enter device (13), calcium base alkaline matter injection device (14) is respectively that material blending and prilling granulator (10) provide active carbon, calcium Base alkaline matter, via flying dust reforming apparatus (9) modified flying dust material blend and prilling granulator (10) in same active carbon, Calcium base alkaline matter is sufficiently mixed granulation, and the material blends and the output end of prilling granulator (10) is connected with storage bin (11), The output end of the storage bin (11) is connected with fluidic device (12).
5. a kind of Hg, SO as claimed in claim 43The sack cleaner of cooperation-removal, it is characterised in that: the fluidic device (12) it is connected with the output end of material blending and prilling granulator (10), the material of granulation will be sufficiently mixed via dry powder injection apparatus (15) gas approach (42) are injected to.
6. a kind of Hg, SO according to any one of claims 1 to 53The sack cleaner of cooperation-removal, it is characterised in that: institute Sack cleaner (4) is stated to further include a point gas tank (43), top loop wheel machine (44), walk terraced (45) and air-channel system (46), the gas circuit System (46) is connected with gas tank (43) is divided.
CN201910255860.2A 2019-04-01 2019-04-01 A kind of Hg, SO3The sack cleaner of cooperation-removal Pending CN110052089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910255860.2A CN110052089A (en) 2019-04-01 2019-04-01 A kind of Hg, SO3The sack cleaner of cooperation-removal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910255860.2A CN110052089A (en) 2019-04-01 2019-04-01 A kind of Hg, SO3The sack cleaner of cooperation-removal

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Publication Number Publication Date
CN110052089A true CN110052089A (en) 2019-07-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548359A (en) * 2019-09-04 2019-12-10 河北唯沃环境工程科技有限公司 Wet dust removal demisting device and wet dust removal demisting method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548359A (en) * 2019-09-04 2019-12-10 河北唯沃环境工程科技有限公司 Wet dust removal demisting device and wet dust removal demisting method thereof

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