CN110508124A - High-concentration industrial flue gas semidry method cleaning treatment system and its process - Google Patents
High-concentration industrial flue gas semidry method cleaning treatment system and its process Download PDFInfo
- Publication number
- CN110508124A CN110508124A CN201910931055.7A CN201910931055A CN110508124A CN 110508124 A CN110508124 A CN 110508124A CN 201910931055 A CN201910931055 A CN 201910931055A CN 110508124 A CN110508124 A CN 110508124A
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- flue gas
- reaction chamber
- cover
- desulfurization
- mixed
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000003546 flue gas Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 60
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 52
- 230000023556 desulfurization Effects 0.000 claims abstract description 51
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 26
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 33
- 239000007924 injection Substances 0.000 claims description 33
- 210000003813 thumb Anatomy 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000003595 mist Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- KIZFHUJKFSNWKO-UHFFFAOYSA-M calcium monohydroxide Chemical compound [Ca]O KIZFHUJKFSNWKO-UHFFFAOYSA-M 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- 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
-
- 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
-
- 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
-
- 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
- B01D2251/602—Oxides
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses high-concentration industrial flue gas semidry method cleaning treatment system and its processes, including denitration unit, dust removing units and desulfurization unit；The input end of the denitration unit is connected to boiler export end；The outlet end of the denitration unit is connected to the input end of dust removing units；The outlet end of the dust removing units is connected to the input end of desulfurization unit；The desulfurization unit includes desulfurizing tower and mixing chamber；The mixing chamber is arranged along the connection of flow of flue gas path in desulfurizing tower upstream；It is contained in the mixing chamber and is provided with desulfurizer powder；The desulfurizing tower includes reaction chamber；The reaction chamber is placed vertically, and top is provided with air inlet, and bottom is provided with gas outlet；The first mixed pneumatic module is provided in the reaction chamber；The first mixed pneumatic module includes that gather qi together collar member, dispersion impeller and the second stream cover；Uniformity adjusting is carried out to the mixed flue gas of doping desulfurizer powder before desulphurization reaction occurs, to improve the efficiency of subsequent reactions.
Description
Technical field
The present invention relates to fume treatment field more particularly to high-concentration industrial flue gas semidry method cleaning treatment systems.
Background technique
Common method one of of the semidry method as flue gas desulfurization and denitrification, is adopted extensively because of its higher desulfuration efficiency
With.But the desulfurizer powder implant uniformity of traditional semidry method equipment is not high, be lost it is larger, and desulfurization reaction product recycling compared with
Trouble, these all reduce the denitrification efficiency of equipment.It is therefore necessary to invent, a kind of material utilization is high, product recycling side
Just high-concentration industrial flue gas semidry method cleaning treatment system.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides that a kind of material utilization is high, product
Recycle convenient high-concentration industrial flue gas semidry method cleaning treatment system.
Technical solution: to achieve the above object, high-concentration industrial flue gas semidry method cleaning treatment system of the invention, including
Denitration unit, dust removing units and desulfurization unit；The input end of the denitration unit is connected to boiler export end；The denitration unit
Outlet end be connected to the input end of dust removing units；The outlet end of the dust removing units is connected to the input end of desulfurization unit；
The desulfurization unit includes desulfurizing tower and mixing chamber；The mixing chamber is arranged along the connection of flow of flue gas path in desulfurization
Tower upstream；It is contained in the mixing chamber and is provided with desulfurizer powder；The desulfurizing tower includes reaction chamber；The reaction chamber is put vertically
It sets, top is provided with air inlet, and bottom is provided with gas outlet；The first mixed pneumatic module is provided in the reaction chamber；Described first
Mixed pneumatic module includes that gather qi together collar member, dispersion impeller and the second stream cover；The gather qi together collar member is arranged in reaction chamber close to air inlet
One end；The gather qi together collar member outer edge is correspondingly connected with cavity wall is reacted；It is provided at gather qi together collar member center first-class
Through-hole；The dispersion impeller is arranged below gather qi together collar member；Drainage dome is provided at the dispersion impeller upper end center；The drainage
Dome is corresponding with first-class lead to the hole site in the vertical direction；Dispersion impeller edge circumferential direction is evenly arranged with the second circulation
Hole；Described second stream is provide with and sets below dispersion impeller；Described second stream covers concave surface upward, and surface is provided with several third streams
Through-hole；Circumferential direction is symmetrically arranged with several air injection blocks on the reaction chamber side wall；The air injection block is located at dispersion in the vertical direction
Disk and second flows between cover；The outlet end of first air injection block is towards itself distribution center position.
Further, the second mixed pneumatic module is additionally provided in the reaction chamber；The second mixed pneumatic module includes first equal
Stream cover and the second stream cover；The concave surface that cover is flowed with second in described first concave surface for flowing cover is oppositely arranged；Described first flows
Cover is located at the corresponding second top for flowing cover；It is several that the described first stream cover of stream cover, second is spaced apart along the vertical direction；
Desulfurization board group is provided with between a pair of first stream cover of stream cover, second；Water mist is provided in the desulfurization board group
Device；Replacement window is provided on the reaction chamber side wall；The replacement window is corresponding with desulfurization board group position in the horizontal direction.
Further, the desulfurization board group includes cell board and framework；The framework is corresponding to be fastened on cell board periphery；If
It does the cell board and is parallel to each other to be spaced and be arranged；The unit plate surface perforation is provided with several third recirculation holes；It is adjacent described
Position is staggered third recirculation hole on cell board in the vertical direction；The water fog generator is mounted on framework close to replacement window
Side；The unit plate surface is embedded with injection pipe；Several injection pipes are interconnected, the gap between third recirculation hole
Part is uniformly distributed in netted；The injection pipe is connected to the outlet end of water fog generator；The injection pipe surface is backwards to embedded
If being provided with spray-hole on the side of plate face；Several spray-holes are evenly spaced on along the length direction of injection pipe.
Further, the mixing chamber includes warehouse；Feed inlet is provided at the top of the warehouse；The warehouse bottom setting
There is discharge port；Auxiliary storehouse is provided with and communicated with below the discharge port；The discharge outlet is embedded with thumb wheel；The revolution of the thumb wheel
Range and discharge port opening corresponding matching；The auxiliary storehouse is sealingly disposed on the outside of thumb wheel；The auxiliary storehouse of the two sides of the thumb wheel
On be provided with and respectively communicated with air duct and delivery pipe；The air outlet of the air duct is corresponding with thumb wheel position；The import of the delivery pipe
End is correspondingly arranged on the outlet air path of air duct；The outlet end of the delivery pipe is connected to air inlet.
Further, the thumb wheel includes axle body and blade；The side wall of the axle body and discharge port is rotatably assorted；The leaf
Piece circumferential direction is evenly distributed on axle body side；The blade double-sided surface is provided with hopper；The length direction and air duct of the hopper
Outlet air path it is consistent.
Further, end cover is equipped at the feed inlet；Being horizontally disposed on the warehouse inner wall has limit
Annular groove；Perforation is provided with strip window on the warehouse side wall；Cooperation is embedded with baffle in the strip window；The baffle passes through item
Shape window moves back and forth, and movement routine is corresponding with warehouse cross section；The baffle and limited ring groove corresponding matching, by upper and lower warehouse
Interior space separates.
Further, heat exchanging pipe is provided in the delivery pipe wall surface；The input end and water source of the heat exchanging pipe connect
It is logical；The outlet end of the heat exchanging pipe is connected to the input end of water fog generator；The delivery pipe inner wall surface fitting is provided with
Thermally conductive bed course.
Further, the process of high-concentration industrial flue gas semidry method cleaning treatment system, includes the following steps,
Step 1, the flue gas that boiler combustion generates first pass around denitration and dedusting, then go through in desulfurization unit；Driving
The intracorporal desulfurizer powder in storehouse is transferred in auxiliary storehouse space by thumb wheel rotation；Flue gas is flowed by air duct into auxiliary storehouse, will be taken off
The entrainment of sulphur agent powder enters reaction chamber；
Step 2, after the mixed flue gas containing desulfurizer powder enters in reaction chamber, first under the action of gather qi together collar member
It is concentrated to reaction chamber center, distributing homogeneity of the desulfurizer powder in flue gas is promoted in this centralized procedure；
Step 3, the mixed flue gas after the first recirculation hole of gather qi together collar member continue to flow, and strike table on dispersion impeller
The drainage dome of the center in face then spreads to dispersion impeller surrounding and passes through the second recirculation hole, then by the gas of air injection block
Stream pushes, and gathers again；During this is gathered, desulfurizer powder and flue gas complete second of mixing, and uniformity is into one
Step is promoted；
Step 4, mixed flue gas continue to flow, and are transferred to the second mixed pneumatic module from the first mixed pneumatic module；These mixed flue gas
It sequentially passes through multiple groups first and flows the combination that cover flows cover with second, implementation phase repeatedly re-mixes process；Exist simultaneously
Every group first stream cover and second stream cover between position pass through cell board on third recirculation hole, and with ejected on injection pipe
Water mist contact, desulphurization reaction occurs, the product for reacting generation falls to unit plate surface, and remaining mixed flue gas is then after afterflow
It is logical, successively desulfurization is carried out in the different units plate zone of action；
Step 5, the flue gas for completing desulfurization leaves desulfurization unit from gas outlet, and is discharged to only by the chimney of cooperation connection
Change processing system in the external space.
The utility model has the advantages that high-concentration industrial flue gas semidry method cleaning treatment system of the invention, including denitration unit, dedusting list
Member and desulfurization unit；The input end of the denitration unit is connected to boiler export end；The outlet end of the denitration unit and dedusting
The input end of unit is connected to；The outlet end of the dust removing units is connected to the input end of desulfurization unit；The desulfurization unit includes
Desulfurizing tower and mixing chamber；The mixing chamber is arranged along the connection of flow of flue gas path in desulfurizing tower upstream；It is contained in the mixing chamber
It is provided with desulfurizer powder；The desulfurizing tower includes reaction chamber；The reaction chamber is placed vertically, and top is provided with air inlet, bottom
Portion is provided with gas outlet；The first mixed pneumatic module is provided in the reaction chamber；The first mixed pneumatic module includes gather qi together collar member, divides
It dissipates disk and the second stream covers；Uniformity adjusting is carried out to the mixed flue gas of doping desulfurizer powder before desulphurization reaction occurs, from
And improve the efficiency of subsequent reactions.
Detailed description of the invention
Attached drawing 1 is fume treatment overall flow schematic diagram；
Attached drawing 2 is desulfurizing tower schematic diagram of internal structure；
Attached drawing 3 is desulfurizing tower internal gas flow path schematic diagram；
Attached drawing 4 is desulfurization board group structural schematic diagram；
Attached drawing 5 is mixing chamber structural schematic diagram；
Attached drawing 6 is mixing chamber operation principle schematic diagram.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
High-concentration industrial flue gas semidry method cleaning treatment system, as shown in Fig. 1, including denitration unit 2, dust removing units 5
With desulfurization unit 7；The input end of the denitration unit 2 is connected to boiler export end；The outlet end of the denitration unit 2 and dedusting
The input end of unit 5 is connected to；The outlet end of the dust removing units 5 is connected to the input end of desulfurization unit 7；The cigarette that boiler 1 generates
Gas is mixed with the ammonia conveyed in liquefied ammonia evaporation element 8 first, is subsequently entered denitration unit 2 and is carried out denitration reaction, subsequent flue gas
It continues to run to heat exchanger 3 to cool down, after filtering out solid particle using dust removing units 5, into occurring in desulfurization unit 7
Desulphurization reaction；The flue gas for completing desulphurization reaction passes through smoke stack emission, and generated product then enters product processing in desulphurization reaction
It is recycled in unit 6；Wherein, denitration unit 2 can purchase SCR denitration equipment scheme on the market；In desulfurization unit 7
CaO, product CaSO are selected in typical desulphurization agent4For being entrained in concrete segment in product processing unit 6, as building
Material.
The desulfurization unit 7 includes desulfurizing tower 71 and mixing chamber 72；The mixing chamber 72 is set along the connection of flow of flue gas path
It sets in 71 upstream of desulfurizing tower；It is contained in the mixing chamber 72 and is provided with desulfurizer powder 701；As shown in Fig. 2, the desulfurizing tower
71 include reaction chamber 711；The reaction chamber 711 is placed vertically, and top is provided with air inlet 712, and bottom is provided with gas outlet
713；The first mixed pneumatic module 73 is provided in the reaction chamber 711, its role is to before desulphurization reaction occurs to doping desulfurization
The mixed flue gas of agent powder 701 carries out uniformity adjusting, to improve the efficiency of subsequent reactions；
The first mixed pneumatic module 73 includes that gather qi together collar member 731, dispersion impeller 732 and the second stream cover 733；The gather qi together circle
One end in reaction chamber 711 close to air inlet 712 is arranged in part 731；In 731 outer edge of gather qi together collar member and reaction chamber 711
Wall is correspondingly connected with；The first recirculation hole 734 is provided at 731 center of gather qi together collar member；This cast structural can be anti-to entering
The mixed flue gas of chamber 711 is answered once to be gathered；The dispersion impeller 732 is arranged below gather qi together collar member 731；The dispersion impeller
Drainage dome 735 is provided at 732 upper end centers to be allowed to be distributed to dispersion impeller its role is to break the mixed flue gas gathered
732 edge, to complete the blending process once gathered-dispersed by air-flow agitation；
The drainage dome 735 is corresponding with 734 position of the first recirculation hole in the vertical direction；732 edge of dispersion impeller
Place's circumferential direction is evenly arranged with the second recirculation hole 736；Described second stream cover 733 is arranged below dispersion impeller 732；Described second
Upward, surface is provided with several third recirculation holes 737 to 733 concave surfaces of stream cover；Circumferential direction is symmetrically arranged on 711 side wall of reaction chamber
Several air injection blocks 715；The air injection block 715 is located at dispersion impeller 732 in the vertical direction and the second stream covers between 733；It is described
The outlet end of first air injection block 715 is towards itself distribution center position；It is introduced air by air injection block 715, to mixed flue gas
It is once diluted, to reduce content of the desulfurizer powder in mixed flue gas, can be caused instead to avoid content of powder is excessively high
Answer waste not in time；Meanwhile air injection block 715 is by the air stream of centring position, it can be by top from the second recirculation hole
The mixed flue gas flowed down at 736, which pushes, to be concentrated, to realize that dynamic dilution was homogenized with convection current agitation when concentrating again
Journey；
The second mixed pneumatic module 74 is additionally provided in the reaction chamber 711, it is multistage de- its role is to be carried out to mixed flue gas
Sulphur；The second mixed pneumatic module 74 includes that the first stream cover 741 and the second stream covers 733；Described first flows the concave surface of cover 741
It is oppositely arranged with the concave surface of the second stream cover 733；Described first stream cover 741 is located at the corresponding second top for flowing cover 733；If
It is dry that the described first stream cover 733 of stream cover 741, second is spaced apart along the vertical direction；With a pair of first stream cover 741,
Second stream cover 733 between be provided with desulfurization board group 75, thus mixed flue gas uniformly across first stream cover 741 after can be
Progress desulphurization reaction is carved, and homogenization can be realized by the second stream cover 733 again after once desulfurization reaction, for next time
Reaction is prepared；It is provided with water fog generator 76 in the desulfurization board group 75, by taking desulfurizing agent is CaO as an example, in mixed flue gas
SO2H can be generated by meeting water2SO3, CaO and H2SO3Reaction generates CaSO3, CaO chance water generation CaOH, CaSO3Generation is reacted with CaOH
CaSO3, and it is further oxidized to CaSO4；Replacement window 702 is provided on 711 side wall of reaction chamber；The replacement window 702 is in water
It is square corresponding with 75 position of desulfurization board group upwards；What reaction generated falls in the plate face of desulfurization board group 75, conveys gap in flue gas
Desulfurization board group 75 is replaced by replacement window 702, so as to conveniently and efficiently carry out collection of products；
As shown in Fig. 4, the desulfurization board group 75 includes cell board 751 and framework 752；The corresponding card of the framework 752 is set
In 751 periphery of cell board；Several cell boards 751, which are parallel to each other, is spaced setting；751 surface of the cell board perforation is provided with
Several third recirculation holes 753；Position is staggered third recirculation hole 753 on the adjacent cell board 751 in the vertical direction, thus
It can be intercepted when front face when desulfurization reaction product each time falls, while increase the residence time of mixed flue gas,
Promote reaction efficiency；The water fog generator 76 is mounted on framework 752 close to the side of replacement window 702, with corresponding desulfurization plate
The step of group 75 synchronizes installation and replacement, eliminates frequent disassembly, it is only necessary to which relevant pipeline is reconnected；Institute
It states 751 surface of cell board and is embedded with injection pipe 755；Several injection pipes 755 are interconnected, between third recirculation hole 753
Gap portion be uniformly distributed in netted, so as to the conversion zone on effective capping unit plate 751；The injection pipe 755
It is connected to the outlet end of water fog generator 76；755 surface of injection pipe is provided with injection on the side of be embedded plate face
Hole；Several spray-holes are evenly spaced on along the length direction of injection pipe 755.
As shown in Fig. 5, the mixing chamber 72 includes warehouse 721；Feed inlet 722 is provided at the top of the warehouse 721；Institute
It states 721 bottom of warehouse and is provided with discharge port 723；Auxiliary storehouse is provided with and communicated with below the discharge port 723, for being desulfurizing agent powder
The mixing of end and flue gas provides enclosure space；Thumb wheel 77 is embedded at the discharge port 723；The revolution range of the thumb wheel 77 with
The opening corresponding matching of discharge port 723, pulls over out by own rotation by the desulfurizer powder in warehouse 721, it is advantageous that
The adjustment of discharging speed, while discharging speed uniform, controllable can be realized by the adjustment of revolving speed；Auxiliary storehouse sealed set
In 77 outside of thumb wheel；Air duct 724 and delivery pipe 725 are provided with and respectively communicated on the auxiliary storehouse of the two sides of the thumb wheel 77；It is described
The air outlet of air duct 724 is corresponding with 77 position of thumb wheel, is blowed away the powder that thumb wheel 77 transports out in time using flue gas, completes
The mixing of the two；The input end of the delivery pipe 725 is correspondingly arranged on the outlet air path of air duct 724；The delivery pipe 725
Outlet end is connected to air inlet 712.
The thumb wheel 77 includes axle body 771 and blade 772；The side wall of the axle body 771 and discharge port 723 is rotatably assorted；
772 circumferential direction of blade is evenly distributed on 771 side of axle body；772 double-sided surface of blade is provided with hopper 773, can make
Powder is distributed more uniform on 772 surface of blade；The length direction of the hopper 773 and the outlet air path of air duct 724 are consistent；
End cover 726 is equipped at the feed inlet 722；Being horizontally disposed on 721 inner wall of warehouse has limit
Annular groove 727；Perforation is provided with strip window 728 on 721 side wall of warehouse；Cooperation is embedded with baffle in the strip window 728
729；The baffle 729 is moved back and forth across strip window 728, and movement routine is corresponding with 721 cross section of warehouse；The baffle
729 with 727 corresponding matching of limited ring groove, space in upper and lower warehouse 721 is separated；As shown in Fig. 6, the part (a) indicates in figure
721 original state of warehouse, thumb wheel 77 works normally at this time, and warehouse 721 is built-in to fill desulfurizer powder, meanwhile, 729 lower section of baffle
Spare space be greater than the spare space of the top of baffle 729；Then as shown in part (b) in figure, end cover 726 is opened, to
The new a collection of desulfurizer powder of addition in warehouse 721；Then as shown in part (c) in figure, end cover 726 is first closed, then will
Baffle 729 is extracted out outward, is combined at one after new desulfurization powder down with original powder；Finally as shown in part (d) in figure,
Again baffle 729 is turned back into origin-location, after in powder inventory such as figure below shown in the part (a), re-started new
Circulation；The effect of baffle 729 is, if the pouring powders directly into warehouse 721, because of huge difference in height, can generate compared with
More suspended particulates causes material waste and increases cleaning amount；And pass through the buffering of baffle 729, it is aobvious to topple over difference in height
Writing reduces, and then merges in the closed situation of warehouse 721 to the powder of 729 top and the bottom of baffle, has prevented suspension
The problem of grain leakage.
Heat exchanging pipe is provided in 725 wall surface of delivery pipe；The input end of the heat exchanging pipe is connected to water source；It is described
The outlet end of heat exchanging pipe is connected to the input end of water fog generator 76, and the temperature for participating in the water mist of desulphurization reaction can be improved,
The temperature of heat effect during hazing along with ultrasonic vibration, the temperature and mixed flue gas that can make water mist is close, thus
Keep the environment temperature of entire desulphurization reaction more stable；725 inner wall surface of the delivery pipe fitting is provided with thermally conductive bed course, passes through
The thickness of thermally conductive bed course can carry out certain regulation to heating effect, better adapt to technique requirement.
The process of high-concentration industrial flue gas semidry method cleaning treatment system, includes the following steps,
Step 1, the flue gas that the burning of boiler 1 generates first pass around denitration and dedusting, then go through in desulfurization unit 7；It drives
Dynamic thumb wheel 77 rotates, and the desulfurizer powder 701 in warehouse 721 is transferred in auxiliary storehouse space；Flue gas by air duct 724 flow into
It assists in storehouse, the entrainment of desulfurizer powder 701 is entered into reaction chamber 711；
Step 2, as shown in Fig. 3, arrow indicates the flow direction of mixed flue gas in figure；Contain desulfurizer powder 701
After mixed flue gas enters in reaction chamber 711,711 center of reaction chamber, In are concentrated under the action of gather qi together collar member 731 first
Distributing homogeneity of the desulfurizer powder 701 in flue gas is promoted in this centralized procedure；
Step 3, the mixed flue gas after the first recirculation hole 734 of gather qi together collar member 731 continue to flow, and strike dispersion
The drainage dome 735 of the center of 732 upper surface of disk then spreads to 732 surrounding of dispersion impeller and passes through the second recirculation hole
736, it is then pushed by the air-flow of air injection block 715, gathers again；During this is gathered, desulfurizer powder 701 and flue gas are complete
It is mixed at second, uniformity is further promoted；
Step 4, mixed flue gas continue to flow, and are transferred to the second mixed pneumatic module 74 from the first mixed pneumatic module 73；These mixing
The multiple groups first that flue gas sequentially pass through flow cover 741 and second flows the combination of cover 733, and implementation phase repeatedly re-mixed
Journey；While third recirculation hole of the position on cell board 751 between 733 is covered in every group first stream cover 741 and the second stream
753, and contacted with the water mist ejected on injection pipe 755, desulphurization reaction occurs, the product for reacting generation falls to cell board
751 surfaces, remaining mixed flue gas then continue to circulate, and successively carry out desulfurization in 751 zone of action of different units plate；
Step 5, the flue gas for completing desulfurization leave desulfurization unit 7, and the chimney row for passing through cooperation connection from gas outlet 713
To cleaning treatment system in the external space.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. high-concentration industrial flue gas semidry method cleaning treatment system, it is characterised in that: including denitration unit (2), dust removing units (5)
With desulfurization unit (7)；The input end of the denitration unit (2) is connected to boiler export end；The outlet end of the denitration unit (2)
It is connected to the input end of dust removing units (5)；The outlet end of the dust removing units (5) is connected to the input end of desulfurization unit (7)；
The desulfurization unit (7) includes desulfurizing tower (71) and mixing chamber (72)；The mixing chamber (72) connects along flow of flue gas path
It is logical to be arranged in desulfurizing tower (71) upstream；It is contained in the mixing chamber (72) and is provided with desulfurizer powder (701)；The desulfurizing tower
It (71) include reaction chamber (711)；The reaction chamber (711) is placed vertically, and top is provided with air inlet (712), and bottom is provided with
Gas outlet (713)；The first mixed pneumatic module (73) is provided in the reaction chamber (711)；The first mixed pneumatic module (73) includes
Gather qi together collar member (731), dispersion impeller (732) and second flow cover (733)；The gather qi together collar member (731) is arranged in reaction chamber (711)
One end of interior close air inlet (712)；Gather qi together collar member (731) outer edge is correspondingly connected with reaction chamber (711) inner wall；It is described
The first recirculation hole (734) are provided at gather qi together collar member (731) center；The dispersion impeller (732) is arranged under gather qi together collar member (731)
Side；Drainage dome (735) is provided at dispersion impeller (732) upper end center；The drainage dome (735) is in the vertical direction
It is corresponding with the first recirculation hole (734) position；Dispersion impeller (732) edge circumferential direction is evenly arranged with the second recirculation hole (736)；
Described second stream cover (733) setting is below dispersion impeller (732)；Described second stream covers (733) concave surface upward, surface setting
There are several third recirculation holes (737)；Circumferential direction is symmetrically arranged with several air injection blocks (715) on reaction chamber (711) side wall；It is described
Air injection block (715) is located at dispersion impeller (732) in the vertical direction and the second stream covers between (733)；First air injection block
(715) outlet end is towards itself distribution center position.
2. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 1, it is characterised in that: the reaction
The second mixed pneumatic module (74) is additionally provided in chamber (711)；The second mixed pneumatic module (74) includes the first equal stream cover (741) and the
Two streams cover (733)；The described first concave surface of stream cover (741) and the concave surface of the second stream cover (733) is oppositely arranged；Described
One stream cover (741) is located at the corresponding second top for flowing cover (733)；It is several that described first stream cover (741), second is flowed
Cover (733) is spaced apart along the vertical direction；It is de- with being provided between a pair of first stream cover (733) of stream cover (741), second
Sulphur board group (75)；Water fog generator (76) are provided on the desulfurization board group (75)；It is provided on reaction chamber (711) side wall
It replaces window (702)；The replacement window (702) is corresponding with desulfurization board group (75) position in the horizontal direction.
3. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 2, it is characterised in that: the desulfurization
Board group (75) includes cell board (751) and framework (752)；The framework (752) is corresponding to be fastened on cell board (751) periphery；If
It does the cell board (751) and is parallel to each other to be spaced and be arranged；Cell board (751) the surface perforation is provided with several third recirculation holes
(753)；Third recirculation hole (753) on the adjacent cell board (751) is staggered position in the vertical direction；The water mist occurs
Device (76) is mounted on framework (752) close to the side of replacement window (702)；Cell board (751) surface is embedded with injection pipe
(755)；Several injection pipes (755) are interconnected, and the gap portion between third recirculation hole (753) uniformly divides in netted
Cloth；The injection pipe (755) is connected to the outlet end of water fog generator (76)；Injection pipe (755) surface is backwards to being embedded
Spray-hole is provided on the side of plate face；Several spray-holes are evenly spaced on along the length direction of injection pipe (755).
4. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 2, it is characterised in that: the mixing
Chamber (72) includes warehouse (721)；Feed inlet (722) are provided at the top of the warehouse (721)；Warehouse (721) the bottom setting
There are discharge port (723)；Auxiliary storehouse is provided with and communicated with below the discharge port (723)；Thumb wheel is embedded at the discharge port (723)
(77)；The revolution range of the thumb wheel (77) and discharge port (723) opening corresponding matching；The auxiliary storehouse is sealingly disposed in thumb wheel
(77) outside；Air duct (724) and delivery pipe (725) are provided with and respectively communicated on the auxiliary storehouse of the two sides of the thumb wheel (77)；Institute
The air outlet for stating air duct (724) is corresponding with thumb wheel (77) position；The input end of the delivery pipe (725) is correspondingly arranged at air duct
(724) on outlet air path；The outlet end of the delivery pipe (725) is connected to air inlet (712).
5. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 4, it is characterised in that: the thumb wheel
It (77) include axle body (771) and blade (772)；The axle body (771) and the side wall of discharge port (723) are rotatably assorted；The leaf
Piece (772) circumferential direction is evenly distributed on axle body (771) side；Blade (772) double-sided surface is provided with hopper (773)；It is described
The length direction of hopper (773) is consistent with the outlet air path of air duct (724).
6. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 4, it is characterised in that: the charging
End cover (726) are equipped at mouth (722)；Restraining position ring block slot (727) are horizontally disposed on warehouse (721) inner wall；
Perforation is provided with strip window (728) on warehouse (721) side wall；Cooperation is embedded with baffle in the strip window (728)
(729)；The baffle (729) moves back and forth across strip window (728), and movement routine is corresponding with warehouse (721) cross section；Institute
Baffle (729) and limited ring groove (727) corresponding matching are stated, upper and lower warehouse (721) interior space is separated.
7. high-concentration industrial flue gas semidry method cleaning treatment system according to claim 4, it is characterised in that: the conveying
Heat exchanging pipe is provided in pipe (725) wall surface；The input end of the heat exchanging pipe is connected to water source；The outlet of the heat exchanging pipe
End is connected to the input end of water fog generator (76)；Delivery pipe (725) the inner wall surface fitting is provided with thermally conductive bed course.
8. the process of high-concentration industrial flue gas semidry method cleaning treatment system described in -7 according to claim 1, feature
It is: includes the following steps,
Step 1, the flue gas that boiler (1) burning generates first pass around denitration and dedusting, then go through in desulfurization unit (7)；It drives
Desulfurizer powder (701) in warehouse (721) is transferred in auxiliary storehouse space by dynamic thumb wheel (77) rotation；Flue gas is by air duct
(724) it flows into auxiliary storehouse, desulfurizer powder (701) entrainment is entered into reaction chamber (711)；
Step 2, after the mixed flue gas containing desulfurizer powder (701) enters in reaction chamber (711), first in gather qi together collar member
(731) reaction chamber (711) center is concentrated under the action of, desulfurizer powder (701) is in flue gas in this centralized procedure
Distributing homogeneity promoted；
Step 3, the mixed flue gas after passing through first recirculation hole (734) of gather qi together collar member (731) continue to flow, and strike dispersion
The drainage dome (735) of the center of disk (732) upper surface then spreads to dispersion impeller (732) surrounding and passes through second
Through-hole (736) is then pushed by the air-flow of air injection block (715), gathers again；During this is gathered, desulfurizer powder
(701) and flue gas completes second of mixing, and uniformity is further promoted；
Step 4, mixed flue gas continue to flow, and are transferred to the second mixed pneumatic module (74) from the first mixed pneumatic module (73)；These mixing
The multiple groups first that flue gas sequentially pass through flow cover (741) and second flows the combination of cover (733), and implementation phase repeatedly mixes again
Conjunction process；Simultaneously in every group first stream cover (741) and the second position between stream cover (733) on cell board (751)
Third recirculation hole (753), and contacted with the water mist ejected on injection pipe (755), desulphurization reaction occurs, reacts the product of generation
Cell board (751) surface is fallen to, remaining mixed flue gas then continues to circulate, successively and in different units plate (751) active region
Domain carries out desulfurization；
Step 5, the flue gas for completing desulfurization leave desulfurization unit (7) from gas outlet (713), and the chimney row for passing through cooperation connection
To cleaning treatment system in the external space.
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