CN107008141A - Desulfurization defluorinate device is devoked suitable for the dry method dust of aluminum i ndustry - Google Patents
Desulfurization defluorinate device is devoked suitable for the dry method dust of aluminum i ndustry Download PDFInfo
- Publication number
- CN107008141A CN107008141A CN201710436302.7A CN201710436302A CN107008141A CN 107008141 A CN107008141 A CN 107008141A CN 201710436302 A CN201710436302 A CN 201710436302A CN 107008141 A CN107008141 A CN 107008141A
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- Prior art keywords
- desulfurization
- defluorinate
- sack cleaner
- ndustry
- dry method
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- 239000000428 dust Substances 0.000 title claims abstract description 45
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 32
- 230000023556 desulfurization Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000005235 decoking Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000006227 byproduct Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 3
- 239000013067 intermediate product Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 15
- 230000002745 absorbent Effects 0.000 description 9
- 239000002250 absorbent Substances 0.000 description 9
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/685—Halogens or halogen compounds by treating the gases with solids
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2047—Hydrofluoric acid
-
- 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)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of dry method dust suitable for aluminum i ndustry and devokes desulfurization defluorinate device, it includes decoking unit, desulfurization unit, defluorinate unit and the chimney being sequentially connected in series, devoke the CaO powder shower nozzle that unit includes being arranged in flue, the outlet connection pre-duster of flue；Desulfurization unit includes fluid bed absorption tower, mechanical dust collector and the first sack cleaner, the bottom on fluid bed absorption tower is installed by Venturi, the gas outlet of pre-duster connects Venturi, fluid bed absorption tower connection mechanical dust collector, the first sack cleaner connection mechanical dust collector；Defluorinate unit includes defluorinate device, the second sack cleaner and the second air-introduced machine, and the gas outlet of the second sack cleaner connects chimney by the second air-introduced machine.The dry method dust decoking desulfurization defluorinate device for being applied to aluminum i ndustry has the advantages that design science, dry method dust decoking desulfurization defluorinate single treatment, high treating effect, the recyclable recycling of intermediate product.
Description
Technical field
The present invention relates to a kind of flue gas processing device, specifically, it relate to a kind of be applicable and be applied to aluminum i ndustry, electrolytic aluminium
Workshop and the smoke gas treatment new equipment of carbon subsidiary factory calcination department.
Background technology
As the country is for industrial and mining enterprises, the especially raising of aluminum i ndustry fume emission requirement, the place of existing extensive style
Reason equipment all can not adapt to new standard, although and some large-scale processing equipments can be up to standard, scale is excessive, right
Cost is too high for some small-sized producers, and over-burden, and existing apparatus can only play single processing effect mostly, solely
Vertical operation, each other without matching relationship, some intermediate products are wasted, very unfortunately.
In order to solve the problem of above is present, people are seeking a kind of preferable technical solution always.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, so that it is de- to provide a kind of design science, dry method dust decoking
Sulphur defluorinate single treatment, high treating effect, the dry method dust suitable for aluminum i ndustry of the recyclable recycling of intermediate product are devoked
Desulfurization defluorinate device.
To achieve these goals, the technical solution adopted in the present invention is：A kind of dry method dust suitable for aluminum i ndustry
Devoke desulfurization defluorinate device, including decoking unit, desulfurization unit, defluorinate unit and the chimney being sequentially connected in series, the decoking unit
Including the CaO powder shower nozzle in flue, the outlet connection pre-duster of the flue, the pre-duster
Chip removal mouth connect the first vibratory sieve；The desulfurization unit includes fluid bed absorption tower, mechanical dust collector and the first bag-type dust
Device, the bottom on the fluid bed absorption tower is inlet end, and the inlet end installs Venturi, the outlet of the pre-duster
The air inlet of the mouth connection Venturi, the gas outlet of the Venturi is located inside the fluid bed absorption tower,
The gas outlet connection mechanical dust collector on the fluid bed absorption tower, first sack cleaner connects the mechanical dust collector
Outlet side；The defluorinate unit includes defluorinate device, the second sack cleaner and the second air-introduced machine, the air inlet of the defluorinate device
The gas outlet of mouth the first sack cleaner of connection, the gas outlet of the defluorinate device connects the air inlet of the second sack cleaner,
The gas outlet of second sack cleaner connects the chimney by second air-introduced machine.
It is described on base, CaO powder shower nozzle, vapor shower nozzle and water spray are installed on the side wall on the fluid bed absorption tower
Head.
Described on base, the chip removal mouth of the mechanical dust collector and first sack cleaner connects a middle ash silo, institute
State middle ash silo and connect the fluid bed absorption tower.
Described on base, the chip removal mouth of the mechanical dust collector and first sack cleaner is also connected with a byproduct material
Storehouse.
Described on base, the chip removal mouth of the defluorinate device connects the second vibratory sieve, and second vibratory sieve connects feed bin.
Described on base, the air outlet of second air-introduced machine connects entering for the fluid bed absorption tower by a reflux line
Gas end.
It is described on base, hair-dryer is installed, first sack cleaner goes out in the feeding-passage of the byproduct feed bin
The first air-introduced machine is connected between the air inlet of gas port and the defluorinate device.
Described on base, it also includes being arranged on the denitration unit before the decoking unit, and the denitration unit includes denitration
Equipment.
The present invention compared with the prior art there is the substantive distinguishing features of protrusion and marked improvement, specifically, the present invention to have
Advantages below：
1st, decoking, dedusting, desulfurization, defluorinate function are rolled into one, integration degree is high, without individually buying equipment, made
With conveniently.
2nd, using dry process, the intermediate product recoverable that each step is produced is more efficient, it is to avoid waste.
3rd, system temperature maintains more than dew point 10~20 DEG C of operations, and almost 100% removing SO3, HCl, HF etc. all the time
Sour gas, system acid free dew point corrosion, without special material anti-corrosion.
4th, whole system is produced without desulfurization wastewater, improvement and secondary pollution problem without desulfurization wastewater.
5th, more than 75 DEG C of smog discharge temperature, are reheated without flue gas, without white plume phenomenon.
6th, because flow is simple, capital expenditure is only the 25~50% of Limestone-gypsum Wet Flue Gas Desulfurization Process system.Operating cost is about
0.50 yuan/kg SO2 or so, and about 1.25 yuan/kg SO2 of the operating cost of limestone-gypsum method wet desulphurisation system or so.
Brief description of the drawings
Fig. 1 is that the dry method dust for being applied to aluminum i ndustry in the present invention devokes the flow chart of desulfurization defluorinate device.
In figure：1. flue；2. pre-duster；3. the first vibratory sieve；4. fluid bed absorption tower；5. mechanical dust collector；
6. the first sack cleaner；7. defluorinate device；8. the second sack cleaner；9. the second air-introduced machine；10. chimney；11. return duct
Road；12. byproduct feed bin；13. middle ash silo；14. the second vibratory sieve.
Embodiment
Below by embodiment, technical scheme is described in further detail.
A kind of dry method dust suitable for aluminum i ndustry devokes desulfurization defluorinate device, including the decoking unit, de- being sequentially connected in series
Sulphur unit, defluorinate unit and chimney, the decoking unit include the CaO powder shower nozzle being arranged in flue 1, the flue gas
The outlet connection pre-duster 2 of pipeline 1, the chip removal mouth of the pre-duster 2 connects the first vibratory sieve 3, and pre-duster 2 can be used
The conventional dust removal equipment such as cyclone separator, multi-tube dust cleaner；The desulfurization unit includes fluid bed absorption tower 4, mechanical dust collector 5
With the first sack cleaner 6, the bottom on the fluid bed absorption tower 4 is inlet end, and the inlet end installs Venturi, institute
The gas outlet for stating pre-duster 2 connects the air inlet of the Venturi, and the gas outlet of the Venturi is positioned at described
Inside fluid bed absorption tower 4, the gas outlet connection mechanical dust collector 5 on the fluid bed absorption tower 4, first sack cleaner
The outlet side of the 6 connection mechanical dust collectors 5；The defluorinate unit includes defluorinate device 7, the second sack cleaner 8 and second
Air-introduced machine 9, the air inlet of the defluorinate device 7 connects the gas outlet of the first sack cleaner 6, the outlet of the defluorinate device 7
The air inlet of mouth the second sack cleaner 8 of connection, the gas outlet of second sack cleaner 8 passes through second air-introduced machine 9
Connect the chimney 10.Defluorinate device 7 is conventional use of defluorinating equipment in industry, and the application is only integrated in the streamline
In equipment, improvement is not made with regard to its structure.
Operation principle：Undressed flue gas enters sprays CaO powder in flue 1 before fluid bed absorption tower, use CaO powder
Tar in flue gas is adsorbed, the CaO powder after tar has been adsorbed subsequently into the removing of pre-duster 2, flue gas is from fluidisation after removing tar
The bed bottom of absorption tower 4 enters, and the bottom of fluid bed absorption tower 4 is Venturi, and flue gas, which flows through speed after Venturi, to be accelerated,
And mutually mixed with very thin absorbent powder, because the density of absorbent and the density difference of flue gas are larger, they mutually it
Between Relative sliding speed it is very big, absorbent is CaO powder herein, therefore has violent rub between particle, between flue gas and particle
Wipe, to SO in flue gas2Absorbing reaction it is highly beneficial, Ca (OH)2With SO in flue gas2With most SO3, HCl, HF etc. it is complete
Into reaction, the calcium sulfite of generation and other materials.Ca/S=1.1~1.2, and Ca/S is up to more than 50 in absorption tower, fully
Absorbent is saved.
In absorption tower, Ca (OH)2With SO in flue gas2With it is most
SO3, HCl, HF etc. complete reaction, main chemical reactions equation is as follows：
Ca(OH)2+SO2=CaSO3·1/2H2O+1/2H2O absorption processes
CaSO3·1/2H2O+1/2O2=CaSO4·1/2H2O oxidizing process
Ca(OH)2+SO3=CaSO4·1/2H2O+1/2H2O absorption processes
Ca(OH)2+CO2=CaCO3+H2O absorption processes
Ca(OH)2+ 2HCl=CaCl2·Ca(OH)2·2H2O (120 DEG C of ＞) absorption process
Ca(OH)2+ 2HF=CaF2+2H2O absorption processes
Flue gas after desulfurization carries a large amount of solid particles and enters big in mechanical dust collector, flue gas at the top of fluid bed absorption tower
Fraction solids particle is separated in mechanical dust collector, and the mechanical dust collector uses multi-tube dust cleaner.
Further, absorbent in dry powder form need to spray into a certain amount of water while fluid bed absorption tower 4 are inputted
Or water vapour, improve absorbent and SO in flue gas3, HCl, HF etc. reactivity, controlled by adjusting water spray or quantity of steam
The desulfurization temperature of whole desulphurization system 10~20 DEG C of operations more than flue gas dew point all the time, so whole desulphurization system is without special
Anti-corrosion measure, using common material.
Therefore, CaO powder shower nozzle, vapor shower nozzle and sprinkler head are installed on the side wall on the fluid bed absorption tower 4.
Further, the chip removal mouth of the mechanical dust collector 5 and first sack cleaner 6 connects a middle ash silo
13, the middle ash silo 13 connects the fluid bed absorption tower 4.The mechanical dust collector 5 and first sack cleaner 6
Chip removal mouth is also connected with a byproduct feed bin 12.The solid particle being separated is largely returned to by ash silo 13 in the middle of one
Fluid bed absorption tower 4 participates in next round desulphurization reaction, and small part solid particle is transported outward into byproduct feed bin 12, and the byproduct adds
It can be hardened after water, the yield strength after hardening is up to 15~18N/mm2, compacted density 1.28g/cm3, permeability is similar to clay, is
3×10-11, so the byproduct is especially suitable for doing backfill, road basis or building materials and used.
Because most of solid particle is circulated up to more than 50 time, more than 30min is detained in desulphurization system, makes solid
Absorbent in grain fully absorbs SO2, the absorption efficiency of absorbent greatly improves, and reduces absorbent expense.
Further, the chip removal mouth of the defluorinate device 7 connects the second vibratory sieve 14, the binder of the second vibratory sieve 14
Storehouse, the garbage collection after defluorinate is uniformly processed.
Further, steady removal is remained able under 10%~110% load variations for guarantee fluid bed absorption tower 4
SO2Operation, the air outlet of second air-introduced machine 9 connects the inlet end on the fluid bed absorption tower 4 by a reflux line 11,
Carry out clean flue gas recirculation.
Further, hair-dryer is installed in the feeding-passage of the byproduct feed bin 12, first sack cleaner 6
The first air-introduced machine is connected between the air inlet of gas outlet and the defluorinate device, it is therefore an objective to strengthen wind-force.
In other embodiments, it also includes being arranged on the denitration unit before the decoking unit, the denitration unit bag
Denitration device is included, the denitration device is conventional denitration device, be only that at this and be integrated in pipelining equipment, improve collection
Cheng Du.Big for potroom exhaust gas volumn, the characteristics of sulfur content is low is handled using the equipment.The flue gas in workshop first leads to
Cross out of stock equipment, subsequently into dry desulfurization device, aluminum oxide dry method defluorinate device, finally enter high-efficiency pulse formula bag-type dust
Device filter, makes potroom discharge flue gas qualified discharge.
For carbon industry calcination department flue gas the characteristics of, using the equipment, calcination department discharge flue gas first pass through
Pre- dedusting, dry method decoking apparatus and out of stock device.Dry desulfurization device.Aluminum oxide dry method defluorinate device, finally enters efficient arteries and veins
Flush bag-type dust arrester is higher than national aluminum i ndustry discharge standard to reach.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among claimed technical scheme scope of the invention.
Claims (8)
1. a kind of dry method dust decoking desulfurization defluorinate device suitable for aluminum i ndustry is characterized in that：It includes removing for being sequentially connected in series
Burnt unit, desulfurization unit, defluorinate unit and chimney, the decoking unit include the CaO powder shower nozzle being arranged in flue,
The outlet connection pre-duster of the flue, the chip removal mouth of the pre-duster connects the first vibratory sieve；The desulfurization list
Member includes fluid bed absorption tower, mechanical dust collector and the first sack cleaner, and the bottom on the fluid bed absorption tower is inlet end,
The inlet end installs Venturi, and the gas outlet of the pre-duster connects the air inlet of the Venturi, described
The gas outlet of Venturi is located inside the fluid bed absorption tower, and the gas outlet connection machinery on the fluid bed absorption tower is removed
Dirt device, first sack cleaner connects the outlet side of the mechanical dust collector；The defluorinate unit includes defluorinate device, the
Two sack cleaners and the second air-introduced machine, the air inlet of the defluorinate device connect the gas outlet of the first sack cleaner, described
The gas outlet of defluorinate device connects the air inlet of the second sack cleaner, and the gas outlet of second sack cleaner passes through described
Second air-introduced machine connects the chimney.
2. the dry method dust according to claim 1 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：Institute
State and CaO powder shower nozzle, vapor shower nozzle and sprinkler head are installed on the side wall on fluid bed absorption tower.
3. the dry method dust according to claim 1 or 2 suitable for aluminum i ndustry devokes desulfurization defluorinate device, its feature exists
In：The chip removal mouth of the mechanical dust collector and first sack cleaner connects a middle ash silo, the middle ash silo connection
The fluid bed absorption tower.
4. the dry method dust according to claim 3 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：Institute
The chip removal mouth for stating mechanical dust collector and first sack cleaner is also connected with a byproduct feed bin.
5. the dry method dust according to claim 4 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：Institute
The chip removal mouth for stating defluorinate device connects the second vibratory sieve, and second vibratory sieve connects feed bin.
6. the dry method dust according to claim 5 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：Institute
The air outlet for stating the second air-introduced machine connects the inlet end on the fluid bed absorption tower by a reflux line.
7. the dry method dust according to claim 4 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：Institute
Hair-dryer is installed in the feeding-passage for stating byproduct feed bin, the gas outlet of first sack cleaner and the defluorinate device
The first air-introduced machine is connected between air inlet.
8. the dry method dust according to claim 4 suitable for aluminum i ndustry devokes desulfurization defluorinate device, it is characterised in that：It
Also include being arranged on the denitration unit before the decoking unit, the denitration unit includes denitration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436302.7A CN107008141A (en) | 2017-06-12 | 2017-06-12 | Desulfurization defluorinate device is devoked suitable for the dry method dust of aluminum i ndustry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436302.7A CN107008141A (en) | 2017-06-12 | 2017-06-12 | Desulfurization defluorinate device is devoked suitable for the dry method dust of aluminum i ndustry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107008141A true CN107008141A (en) | 2017-08-04 |
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| CN201710436302.7A Pending CN107008141A (en) | 2017-06-12 | 2017-06-12 | Desulfurization defluorinate device is devoked suitable for the dry method dust of aluminum i ndustry |
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