CN106731407A - A kind of carbon anode roasting gas cleaning minimum discharge system and technique - Google Patents
A kind of carbon anode roasting gas cleaning minimum discharge system and technique Download PDFInfo
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- CN106731407A CN106731407A CN201710013454.6A CN201710013454A CN106731407A CN 106731407 A CN106731407 A CN 106731407A CN 201710013454 A CN201710013454 A CN 201710013454A CN 106731407 A CN106731407 A CN 106731407A
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- flue gas
- tar precipitator
- electrical tar
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- 238000004140 cleaning Methods 0.000 title claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012716 precipitator Substances 0.000 claims abstract description 78
- 239000003546 flue gas Substances 0.000 claims abstract description 76
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000007921 spray Substances 0.000 claims abstract description 63
- 239000007789 gas Substances 0.000 claims abstract description 58
- 239000000779 smoke Substances 0.000 claims abstract description 44
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 27
- 230000023556 desulfurization Effects 0.000 claims abstract description 27
- 230000002902 bimodal effect Effects 0.000 claims abstract description 24
- 239000011269 tar Substances 0.000 claims description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 81
- 238000009826 distribution Methods 0.000 claims description 40
- 239000000428 dust Substances 0.000 claims description 31
- 230000005684 electric field Effects 0.000 claims description 28
- 238000009413 insulation Methods 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 14
- 239000010742 number 1 fuel oil Substances 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 7
- 150000004767 nitrides Chemical class 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002641 tar oil Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000013517 stratification Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000000809 air pollutant Substances 0.000 abstract description 2
- 231100001243 air pollutant Toxicity 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 31
- 239000011295 pitch Substances 0.000 description 18
- 239000010426 asphalt Substances 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 206010039509 Scab Diseases 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000357 carcinogen Toxicity 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QJTQKPNNQVLHHO-UHFFFAOYSA-N 9h-carbazole;1h-indole Chemical class C1=CC=C2NC=CC2=C1.C1=CC=C2C3=CC=CC=C3NC2=C1 QJTQKPNNQVLHHO-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- AXFBAIOSECPASO-UHFFFAOYSA-N pentacyclo[6.6.2.02,7.04,16.011,15]hexadeca-1(14),2(7),3,5,8(16),9,11(15),12-octaene Chemical compound C1=C(C=C23)C4=C5C3=CC=CC5=CC=C4C2=C1 AXFBAIOSECPASO-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
- 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
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/202—Single element halogens
- B01D2257/2027—Fluorine
-
- 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)
- Electrostatic Separation (AREA)
Abstract
A kind of carbon anode roasting gas cleaning minimum discharge system and technique, system includes spray cooler, electrical tar precipitator, desulfurization defluorinate device, the flue gas output end of spray cooler connects the smoke inlet of electrical tar precipitator, and the exhanst gas outlet of electrical tar precipitator connects the smoke inlet of desulfurization defluorinate device by smoke exhaust fan；Using multifunctional assembled bimodal slab anode row, cathod system uses rib type line and square line to anode system in electrical tar precipitator；Hot cleaner is provided with electrical tar precipitator.Items pollutant emission index of the invention is all up to the country's Air Pollutant Emission requirement of 2016 the year two thousand thirties.Gas cleaning efficiency high.Key point in systems is provided with temperature monitoring point, to may burning-point be monitored control, it is ensured that keep the safety in production.Hot cleaner can effectively prevent the generation of Xu Ran phenomenons in electrical tar precipitator.Pole of the invention is matched somebody with somebody with mode using hybrid pole, improves purification efficiency.
Description
Technical field
The present invention relates to aluminium industry carbon anode roasting smoke gas treatment field, more particularly to a kind of carbon anode roasting flue gas
Purification minimum discharge system and technique.
Background technology
Aluminium industry carbon anode roasting smoke gas treatment, bituminous, tar, particulate matter dust, SO in baking flue gas2, fluorination
Thing (solid fluorine), nitride, the carbon product species in aluminium industry needed for electrolytic furnace are various, are volatilized in roasting technique or distributed
Substantial amounts of bitumen flue gas (containing tar) and particulate matter dust and sulfur dioxide, fluorine (solid), HF, nitrogen oxides, and pitch
Also containing more than the 80 kinds of multiring aromatic hydrocarbon such as three or four benzo pyrrole carbazoles in cigarette, and most of is strong carcinogen, particle diameter 0.1~
Between 1.0 μm, minimum about 0.01 μm, maximum at 1.0 μm, difficulty of governance is big, it has also become current environment protection treating is badly in need of solution
Big problem certainly.
Current Chalco carbon anode roasting flue gas purification system electrical tar precipitator cathode line still uses Φ 2mm- Φ 4mm
Round wires, the definition of Φ 2mm- Φ 4mm round wires：The critical corona voltage of round wires is high, and corona current is small, and strength of discharge is low, this round wires
It is former Soviet Union's technology before 30 years, the advanced country in the world and the electric precipitation of China's other industry no longer use this backwardness already
Polar curve mode.Anode：Still using the calandria positive plate (Japan 70 years of backward Φ 20mm- Φ 40mm gas pipes composition
For the backward technology of former formula electrical tar precipitator), asphalt smoke is difficult charged, and the tarvia dust adhesion of pre electrified is in Φ
20mm- Φ 40mm anode tube row on, release electric charge it is extremely difficult, its result cause the voltage of electric field reduces, electric current increase, frequently
The short circuit dischange of frequency, purifying property significantly deteriorates, and causes the short circuit of electrical tar precipitator electric field, causes equipment to run.Such knot
The equipment of structure wastes the energy, backward in technique, and every pollutant emission index cannot all meet the requirement of the new new energy discharge index of country.
And without SO in existing carbon baking flue gas cleaning system2, F (Gu) and nitride purifier
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art, there is provided a kind of carbon anode roasting gas cleaning is ultralow
Exhaust system and technique, realize the purification and minimum discharge of baking flue gas.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of carbon anode roasting gas cleaning minimum discharge system, including spray cooler, electrical tar precipitator, desulfurization take off
Fluorine device, the flue gas output end of spray cooler connects the smoke inlet of electrical tar precipitator, and the exhanst gas outlet of electrical tar precipitator leads to
Cross the smoke inlet that smoke exhaust fan connects desulfurization defluorinate device；Anode system in the electrical tar precipitator uses many work(of combined type
The bimodal slab anode row of energy, cathod system uses rib type line and square line；Hot cleaner is provided with electrical tar precipitator.
The multifunctional assembled bimodal slab anode row is formed by connecting by several multi-functional bimodal slab anode rows,
The multi-functional bimodal slab anode row includes board-like main body, horizontal pipeline, pipe tunnel, and horizontal pipeline is arranged on board-like main body
Upper and lower ends, pipe tunnel is longitudinally disposed board-like main body, is interconnected between horizontal pipeline and pipe tunnel, in longitudinal direction
It is the steel plate of triangle that a layer cross section is wrapped up in the outside of pipeline, and an angle of triangle is arranged in board-like main body, two other
Angle is outwardly formed projection from the plate face of board-like main body.
Described cathod system uses major insulation overhung construction, and the structure includes major insulation incubator, the height of upper end
Insulating protective cover and the suspension apparatus of lower end, insulating protective cover high are arranged between major insulation incubator and suspension apparatus.
It is the cavity of 1m~1.5m that the bottom of the major insulation incubator is provided with height, in the upper of major insulation incubator
Portion is provided with heater, and heater is also equipped with the cavity of major insulation insulation lower box part.
The upper end of the spray cooler is provided with two-way atomising device, two-way atomising device is set to upper and lower two sprays
Shower pipe road, demister is provided between two spray pipings, and the bottom of spray cooler is provided with gas collecting apparatus.
The gas collecting apparatus includes airflow-distribution board, exhanst gas outlet pipeline, ash bucket, hot coal oil heater, air flow method
Plate is arranged on the upper end of ash bucket, and exhanst gas outlet pipeline is arranged on the centre position of airflow-distribution board, pacifies in the lower end of ash bucket
Equipped with hot coal oil heater, the bottom of ash bucket is provided with pitch blowoff valve.
It is 2 that described electrical tar precipitator sets quantity, sets 1 in an electrical tar precipitator wherein#With 2#Two electricity
, set 3 in another electrical tar precipitator#With 4#Two electric fields, 1#With 3#Electric field is using multifunctional assembled bimodal board-like
Anode deploying square line cathode, 2#With 4#Electric field uses multifunctional assembled bimodal slab anode deploying rib type line cathode.
Oily dirt separator is provided with the smoke inlet of the electrical tar precipitator, oily dirt separator includes deflector type air-flow
Distribution grid, G types airflow-distribution board, ash bucket, ash bucket are arranged on the lower end of oily dirt separator, deflector type airflow-distribution board and G type gas
Flow point fabric swatch arranges in tandem from smoke inlet direction, and G types airflow-distribution board includes several different pore sizes and percent opening
Airflow-distribution board, the hole on deflector type airflow-distribution board is delthyrium.
The desulfurization defluorinate device includes pond, air inlet pipe, shower, demister, and pond is arranged on desulfurization defluorinate device
Bottom, the entrance of air inlet pipe is provided with spray equipment, the exhanst gas outlet of air inlet pipe is stretched into pond, in desulfurization defluorinate device
Top set gradually demister and shower from top to bottom, shower is connected by water pump with pond, and pond is additionally provided with row
The mouth of a river and water supplement port.
It is ultralow that a kind of carbon anode roasting gas cleaning minimum discharge system described in carries out purification to baking flue gas
The technique of discharge, it is specific as follows：
Flue gas from calcination department enters from the smoke inlet of spray cooler upper end, and flue gas is removed by the pre- of demister
After dirt filtering, operation downwards, the spray piping of demister upper end carries out spray washing, the shower of demister lower end to demister
The water fog particle that road sprays is 20~40 μm, high-temperature flue gas is fully contacted with water smoke and carries out heat exchange, flue gas warp
Water smoke washing, cooling, and condensed with water smoke, the flue gas through water smoke washing, cooling enters entrainment of dust granule and the pitch of condensation
Enter the gas collecting apparatus of bottom, after the filter bypass of airflow-distribution board, flue gas is discharged from exhaust pass, into electrical tar precipitator；
It is washed to be discharged from the pitch blowoff valve of gas collecting apparatus bottom with the pitch for tentatively filtering down and dust granule, hot coal oil heating
Device carries out heating and can prevent pitch cooled and solidified to ash bucket；
Flue gas initially enters the oily dirt separator of electrical tar precipitator, deflector type airflow-distribution board and G in oily dirt separator
Type airflow-distribution board separates the part solid-state dust granules in flue gas from flue gas, and the dust separated falls into oily dirt
The ash bucket of separator lower end is simultaneously discharged；Flue gas then enters in the electric field of electrical tar precipitator, through the flue gas after electrical tar precipitator dedusting
Desulfurization defluorinate device is entered by smoke exhaust fan；
First drop is sprayed from the flue gas of electrical tar precipitator discharge through the spray equipment of the air inlet pipe porch of desulfurization defluorinate device
Temperature, sufficient water-bath is carried out subsequently into pond with water, is reacted with water after dissolving, and the water temperature in pond is maintained at 20 DEG C
~24 DEG C, flue gas by pond reclaimed water washing, the SO that will be remained in flue gas2, F and nitride cleaned, arrange then up
Go out, washed through shower water again, further absorb remaining a small amount of sulfide, fluoride in flue gas, it is dry after repeated washing
Neat stress finally by demister filtering again, tar, dust in further purifying smoke eventually enter into chimney and enter
Air；
The hot cleaner set in electrical tar precipitator, is divided into heat water-spraying and cold water spray, and heat water-spraying can be with
Online that cleaning showers are carried out to electric field, cold water spray is fire-fighting spraying；The hot cleaner is in oily dirt separator, electric fishing simultaneously
Hot wash pipeline is both provided with the ash bucket of tar device lower end, is realized to oily dirt separator, the hot water of electrical tar precipitator ash bucket
Cleaning；
In whole flue gas emission, multiple spot sets temperature sensor, the temperature of any test point in system is detected
During degree changes delta t >=10 DEG C, temperature sensor sends accident alarming command signal, and the cold water fire-fighting spraying in electrical tar precipitator is opened
It is dynamic, and to being passed through steam in system pipeline.
Compared with prior art, the beneficial effects of the invention are as follows：
1) every pollutant emission index is all up the Air Pollutant Emission requirement of 2016-2030 countries.
2) present invention is provided with oily dirt separator at the smoke inlet of electrical tar precipitator, and 80% is trapped before electric field is entered
Dust and discharged from the ash bucket of oily dirt separator lower end, effectively improve gas cleaning efficiency.
3) key point in systems is provided with temperature monitoring point, to may burning-point be monitored control, when detecting
In system during temperature jump Δ t >=10 DEG C of any test point, temperature sensor sends accident alarming command signal, starts in time
Fire fighting device in system, it is ensured that safety in production.
4) hot cleaner, anode steam tracing device are provided with electrical tar precipitator of the invention, to electrically trapped tar oil
The pitch dust that the cathode and anode system cohesion of device is heaped and the cleaning that the mixture of tar is carried out periodically or non-periodically (can be powered
Cleaning, scavenging period 40~90 minutes) ensure the operation of electrical tar precipitator stability and high efficiency.Meanwhile, hot cleaner can be with
Effectively prevent the generation of Xu Ran phenomenons in electrical tar precipitator.
5) pole of the invention is matched somebody with somebody with mode using hybrid pole, is characterized in that the discharge inception voltage of electric field is low, and corona current is big,
Corona density is increased, the specific dust collection area of positive plate is increased, the pitch and tar in bitumen flue gas is easily trapped, improves net
Change efficiency.
Brief description of the drawings
Fig. 1 is a kind of arrangement total figure of carbon anode roasting gas cleaning minimum discharge system of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the schematic diagram of electrical tar precipitator hot cleaner；
Fig. 4 is the H direction views of Fig. 3；
Fig. 5 is the structural representation of multifunctional assembled bimodal slab anode row；
Fig. 6 is the A-A direction views of Fig. 5；
Fig. 7 is the B direction views of Fig. 5；
Fig. 8 is the sectional view of square line；
Fig. 9 is the sectional view of rib type line；
Figure 10 is the schematic diagram of cathod system major insulation overhung construction；
Figure 11 is the C direction views of Figure 10；
Figure 12 is I point enlarged drawings in Figure 10
Figure 13 is the structural representation of spray cooler；
Figure 14 is the D-D direction views of Figure 13；
Figure 15 is the enlarged drawing of gas collecting apparatus；
Figure 16 is the structural representation of electrical tar precipitator oil dirt separator；
Figure 17 is the E-E direction views of Figure 16；
Figure 18 is the F-F direction views of Figure 16；
Figure 19 is the G-G direction views of Figure 16；
Figure 20 is the structural representation of desulfurization defluorinate device；
Figure 21 is a kind of process chart of carbon anode roasting gas cleaning minimum discharge system of the invention.
In figure：1- spray coolers, 2- electrical tar precipitators, 3- smoke exhaust fans, 4- desulfurization defluorinates device, 5- chimneys, 6- steam
Steam cutting access point, 7- sections are steel plate, 8- pipe tunnels, the board-like main bodys of 9-, 10- horizontal pipelines, 11- flanges, 12- the moon of triangle
Polar curve, 13- cathode frames, 14- insulating protective covers high, 15- cavitys, 16- major insulations incubator, 17- heaters, 18- channel-section steels
Shower under beam, 19- pressing plates, 20- bolts, 21- nuts, 22- demister 23- temperature sensors, the upper spray pipings of 24-, 25-
Road, 26- vavle shelves, 27- exhanst gas outlets pipeline, 28- airflow-distribution boards, 29- hot coals oil heater, 29-1 oiling devices, 29-2 heat
Kerosene, 29-3 electric heater units, 30- pitches blowoff valve, 31- hot-water cylinders, the box advection sewage-treatment plants of 32- tetra-, 33- bafflings
Formula airflow-distribution board, 34-G types airflow-distribution board, 35- ash buckets, 36- spray pipings, 37- hot cleaners main pipeline, 38- ashes
Bucket hot water injection pipeline, 39- overflow pipes, 40- spray equipments, 41- alkali lye pulping equipment, 42- gutters, 43- showers, 44-
Air inlet pipe, 45- water pumps, 46-PH values sensor, 47- cutting-off controllings valve, the windproof grooves of 48-.
Specific embodiment
Embodiments of the present invention are further illustrated below in conjunction with the accompanying drawings：
See Fig. 1-Fig. 2, a kind of carbon anode roasting gas cleaning minimum discharge system, including spray cooler 1, electric tar
Oily device 2, desulfurization defluorinate device 4, the flue gas output end of spray cooler 1 connect the smoke inlet of electrical tar precipitator 2, electrically trapped tar oil
The exhanst gas outlet of device 2 connects the smoke inlet of desulfurization defluorinate device 4, the exhanst gas outlet of desulfurization defluorinate device 4 by smoke exhaust fan 3
Connection chimney 5；Anode system in the electrical tar precipitator 2 is using multifunctional assembled bimodal slab anode row, cathod system
Using rib type line and square line；Hot cleaner is provided with electrical tar precipitator 2.
See Fig. 3, Fig. 4, Figure 16, Figure 21, hot cleaner includes hot-water cylinder 31, hot cleaner main pipeline 37, ash
Bucket hot water injection pipeline 38 and the spray piping 36 of the electric field upper end of electrical tar precipitator 2 is arranged at, fire water is first passed through hot water
Tank 31 is heated, and hot cleaner main pipeline 37 connects hot-water line and cold water pipe simultaneously, when normally producing, is cleaned to hot water
90 DEG C~100 DEG C of hot water is passed through in device main pipeline 37, the cathode and anode system of electrical tar precipitator is coagulated by spray piping 36
The mixture of the poly- pitch dust for heaping and tar carry out periodically or non-periodically cleaning (powered can clean, scavenging period 40~
90 minutes), then coordinate anode steam heat tracing system use (to be passed through in horizontal pipeline 10 and pipe tunnel 8 steam or
Remaining hot water), can prevent cathode line dross, anode row from scabbing, the purification efficiency of flue gas can be not only improved, while can be effective
Elimination Xu Ran phenomenons generation, it is ensured that the operation of the stability and high efficiency of electrical tar precipitator 2.
The electric power system of electrical tar precipitator 2 is resistivity set electric current, the voltage according to water, and using the control of constant current constant voltage
Mode processed, controlled output efficiency, the shower water of hot cleaner will not produce conductive effect under the delivery efficiency, therefore
Hot water cleaning in electrical tar precipitator 2 can be with powered on-line implement.
Hot cleaner main pipeline 37 also passes through ash bucket 35 of the ash bucket hot water injection pipeline 38 to the bottom of electrical tar precipitator 2
In be passed through hot water, hot water cleaning is carried out to ash bucket 35, prevent Xu Ran phenomenons.
When the mutation of the internal temperature of electrical tar precipitator 2 is beyond setting range, then lead to in hot cleaner main pipeline 37
Enter cold water, open the fire mode of big above-water method.
See Fig. 5-Fig. 7, the multifunctional assembled bimodal slab anode row is by several multi-functional bimodal slab anodes
Row is formed by connecting, and the multi-functional bimodal slab anode row includes board-like main body 9, horizontal pipeline 10, pipe tunnel 8, transverse pipe
Road 10 is arranged on the upper and lower ends of board-like main body 9, and pipe tunnel 8 is longitudinally disposed board-like main body 9, horizontal pipeline 10 with longitudinal direction
It is interconnected between pipeline 8, it is the steel plate 7 of triangle, an angle of triangle to wrap up a layer cross section in the outside of pipe tunnel 8
It is arranged on 9 in board-like main body, two other angle is outwardly formed projection from the plate face of board-like main body 9.The steel plate 7 of the triangle is in plate
The both sides of the plate plane of formula main body 9 form the projection of double-peak type, form windproof groove 48.Single multi-functional bimodal slab anode row
Between connected by flange 11, constitute multifunctional assembled bimodal slab anode row.
Windproof groove 48 has the function of shield gas flow, makes the air flow method for entering electric field uniform, does not produce turbulent flow, so that
Accelerate the chargeability of bitumen flue gas, coordinate the structure of the big board-like main body 9 of specific dust collection area, more can effectively trap pitch tobacco powder
Dirt；Section is that the steel plate 7 of triangle and the compound rigidity of board-like main body 9 are strong simultaneously, and under hot conditions, heat endurance is good, whole
Body structure is indeformable；
Add to being passed through steam or remaining hot water in horizontal pipeline 10 and pipe tunnel 8 and multi-functional bimodal slab anode being discharged into go
Heat, slab anode plate row's heat-conducting efficiency speed is fast, and the thermal efficiency is high, and board-like main body 9 is heated evenly, the control electric field that can stablize
90 ± 5 DEG C of changes of adaptation bitumen flue gas softening point of interior dust constaining temperature degree, it is ensured that the permanent high-efficient purification of bitumen flue gas.
The geometry of multi-functional bimodal slab anode row also has the trickling for being easy to pitch, easy blowdown, does not scab, does not tie
Knurl, easy cleaning.
See Fig. 8-Fig. 9, cathod system uses rib type line and square line；Have on four corners of rib type line total length very big
Radius of curvature, compares with round wires, and rigid is good, and discharge inception voltage is low, and corona current is big.Square line it put with the tip of corner
Electricity, strength of discharge is high, and discharge inception voltage is high, and corona current is big, and four corners of square line tip can produce it is strong from
Subflow, the electric wind in increase electrical tar precipitator electric field, weakens and prevents corona blocking, with very strong release electric charge function,
Strength of discharge is big, and no-spark electric discharge slope is high, and discharge voltage is high.Match somebody with somebody with multifunctional assembled bimodal slab anode plate row pole, electricity
Field intensity E ＞ 3.0KV/cm, anode row's surface current density is uniform, and asphalt smoke chargeability is high, and smooth performance is good, is not likely to produce
Scab and shelf depreciation flashover, it is ensured that efficiency of dust collection stabilization, reliability.Rib type line of the invention and square line its sectional area are
6mm×6mm。
See Figure 10, Figure 11, described cathod system uses major insulation overhung construction, the structure includes that the master of upper end is exhausted
The suspension apparatus of edge incubator 16, insulating protective cover high 14 and lower end, insulating protective cover high 14 is arranged on major insulation incubator 16
And suspension apparatus between.
It is the cavity 15 of 1m~1.5m that the bottom of the major insulation incubator 16 is provided with height, in major insulation incubator
16 top is provided with heater 17, and heater is also equipped with the cavity 15 of major insulation insulation lower box part.
The air in major insulation incubator 16 and cavity 15 is heated by heater, makes major insulation incubator 16
And the air themperature in cavity 15 is consistently higher than the flue-gas temperature of lower end, the flue gas that lower end is flowed by negative pressure is formed it is micro- just
Pressure, constitutes dynamic thermally-stabilised sealing, prevents during bottom flue gas ascends into major insulation incubator 16, insulating protective cover high 14
Play a part of to insulate flue gas choked flow simultaneously.
See Figure 12, suspension apparatus include bolt 20, nut 21, pressing plate 19, cathode frame 13 by bolt 20, nut 21,
Pressing plate 19 is hung on the steel channel beam 18 of the lower end of insulating protective cover high 14
See Figure 13-Figure 15, the upper end of the spray cooler 1 is provided with two-way atomising device, two-way atomising device sets
Upper and lower two spray pipings 24,25 are set to, demister 22 are installed between two spray pipings, at the bottom of spray cooler 1
Portion is provided with gas collecting apparatus.
Two-way atomising device includes upper spray piping 24, lower spray piping 25, compressed air piping, waterpipe, upper spray
Pipeline 24 and lower spray piping 25 are set down in spray cooler 1, the connecting water pipe of upper spray piping 24, lower spray piping
25 connect compressed air piping and waterpipe simultaneously, and lower spray piping 25 carries out spray-chilling, upper spray piping to flue gas
24 pairs of demisters 22 carry out cleaning showers.
The gas collecting apparatus includes airflow-distribution board 28, exhanst gas outlet pipeline 27, ash bucket, hot coal oil heater 29, gas
Flow point fabric swatch 28 is arranged on the upper end of ash bucket, and exhanst gas outlet pipeline 27 is arranged on the centre position of airflow-distribution board 28, in product
The lower end of ash bucket is provided with hot coal oil heater 29, and the bottom of ash bucket is provided with pitch blowoff valve 30.
Hot coal oil heater 29 includes oiling device 29-1, electric heater unit 29-3, by oiling device 29-1 to hot coal
Oil heater 29 injects kerosene, and temperature sensor 23 is also equipped with hot coal oil heater 29.
See Figure 21, it is 2 that described electrical tar precipitator 2 sets quantity, by the way of hybrid pole is matched somebody with somebody, one wherein
1 is set in electrical tar precipitator 2#With 2#Two electric fields, 3 are set in another electrical tar precipitator 2#With 4#Two electric fields, 1#With
3#Electric field uses multifunctional assembled bimodal slab anode deploying square line cathode, 2#With 4#Electric field is using multifunctional assembled double
Peak slab anode deploying rib type line cathode.
See Figure 16-Figure 19, oily dirt separator, oily dirt separator are provided with the smoke inlet of the electrical tar precipitator 2
Including deflector type airflow-distribution board 33, G types airflow-distribution board 34, ash bucket 35, ash bucket 35 is arranged on the lower end of oily dirt separator, folding
Streaming airflow-distribution board 33 and G types airflow-distribution board 34 arrange that G types airflow-distribution board 34 is wrapped from smoke inlet direction in tandem
The airflow-distribution board of several different pore sizes and percent opening is included, the hole on deflector type airflow-distribution board 33 is delthyrium.G type air-flows
Distribution grid 34 is that multiple airflow-distribution boards are arranged before and after, and the aperture and percent opening on each airflow-distribution board are different from.
Oily dirt separator is set in the porch of electrical tar precipitator 2, the solid-state dust granules in flue gas can be efficiently separated,
So that 80% dust is captured down before electric field is entered.The connection of hot water injection's pipeline is also provided with oily dirt separator
Hot cleaner main pipeline 37, meanwhile, hermetically sealed pitch blowdown is provided with the ash discharging hole of the ash bucket 35 of electrical tar precipitator 2
Valve, it is ensured that the dust that electrical tar precipitator 2 is trapped timely and effectively is discharged, while leading to in oily dirt separator and ash bucket 35
Enter hot water to be cleaned, it is to avoid condense spontaneous combustion after heaping in electric field.
In order to control the generation of Xu Ran phenomenons, electrical tar precipitator 2 is provided with multiple temperature monitoring points, and in electrically trapped tar oil
The import and export of device 2 are all provided with temperature monitoring point, and each electric field top is provided with 1 temperature sensor, on each ash bucket 35
There is provided 2 temperature sensors.Meanwhile, automatic control system displays temperature jump signal Δ t >=10 DEG C as may burning-point
Basis for estimation.If during temperature jump signal △ t >=10 DEG C, to cold water is passed through in hot cleaner main pipeline 37, opened
The explosion-proof pattern of dynamic fire-fighting fire extinguishing.
See Figure 20, the desulfurization defluorinate device 4 includes pond, air inlet pipe 44, shower 43, demister 22, and pond is set
In the bottom of desulfurization defluorinate device 4, the porch of air inlet pipe 44 is provided with spray equipment 40, the exhanst gas outlet of air inlet pipe 44 is stretched
Enter in pond, demister 22 and shower 43 are set gradually from top to bottom in the top of desulfurization defluorinate device 4, shower 43 passes through
Water pump 45 is connected with pond, and pond is additionally provided with discharge outlet and water supplement port.The discharge outlet in pond is connected with gutter 42, and in water
Cutting-off controlling valve 47 is set at the discharge outlet in pond, water-level gauge is set in pond, automatically control the water level in pond.Pond passes through
Gutter 42 connects four box advection sewage-treatment plants 32.Pond is also connected with alkali lye pulping equipment 41 simultaneously, leads to in pond
Enter the MgO aqueous solution, the acid-base value of equalizing reservoir reclaimed water is provided with pH value sensor in pond, be used to detect and control MgO water
The intake of solution.
MgO generates Mg (OH) after being dissolved in water2, Mg (OH)2As desulfurizing agent and H2SO3(SO2+H2O=H2SO3) reaction life
Into MgSO3, recyclable recycling, the clean water being neutralized enters gutter 42.
It is ultralow that a kind of carbon anode roasting gas cleaning minimum discharge system described in carries out purification to baking flue gas
The technique of discharge, it is specific as follows：
See Figure 21, the flue gas from calcination department enters from the smoke inlet of the upper end of spray cooler 1, and flue gas is by demisting
After the pre- dust removal and filtration of device 22, operation downwards, the upper spray piping 24 of the upper end of demister 22 carries out spray washing to demister 22,
The water fog particle that the lower spray piping 25 of the lower end of demister 22 sprays is 20~40 μm, high-temperature flue gas is carried out fully with water smoke
Contact and carry out heat exchange, flue gas is washed through water smoke, cooling, and is condensed with water smoke, through water smoke washing, cooling flue gas entrainment of
Dust granule and the pitch for condensing enter the gas collecting apparatus of bottom, and after the filter bypass of airflow-distribution board 28, flue gas is from outlet
Flue is discharged, into electrical tar precipitator 2；It is washed and the pitch and dust granule for tentatively filtering down from gas collecting apparatus bottom
Pitch blowoff valve 30 is discharged, and hot coal oil heater 29 carries out heating and can prevent pitch cooled and solidified to ash bucket；
Flue gas initially enters the oily dirt separator of electrical tar precipitator 2, the deflector type airflow-distribution board 33 in oily dirt separator
The part solid-state dust granules in flue gas are separated from flue gas with G types airflow-distribution board 34, the dust separated falls
Enter the ash bucket 35 of oily dirt separator lower end and discharge；Flue gas then enters in the electric field of electrical tar precipitator 2, is removed through electrical tar precipitator 2
Flue gas after dirt enters desulfurization defluorinate device 4 by smoke exhaust fan 3；
From electrical tar precipitator 2 discharge flue gas first through desulfurization defluorinate device 4 the porch of air inlet pipe 44 spray equipment 40
Spraying cooling, makes flue gas be down to 30 DEG C by 80 DEG C, and sufficient water-bath is carried out with water subsequently into pond, is carried out with water after dissolving
Reaction, the water temperature in pond is maintained at 20 DEG C~24 DEG C, flue gas by pond reclaimed water washing, the SO that will be remained in flue gas2、F
Gu () and nitride are cleaned, discharge then up, washed through shower water again, it is further remaining a small amount of in absorption flue gas
Sulfide, fluoride, clean flue gas after repeated washing finally by demister 22 filtering again, further smoke-purifying
Tar, dust in gas, eventually enter into chimney 5 and enter air；
The hot cleaner set in electrical tar precipitator 2, is divided into heat water-spraying and cold water spray, and heat water-spraying can be with
Cleaning showers are carried out to electric field, cold water spray is fire-fighting spraying；The hot cleaner is in oily dirt separator, electrically trapped tar oil simultaneously
Hot wash pipeline is both provided with the ash bucket of device lower end, the hot water cleaning to oily dirt separator, electrical tar precipitator ash bucket is realized；
In whole flue gas emission, multiple spot sets temperature sensor, and (key position of flue gas emission for example sprays
Drench at cooler, electrical tar precipitator, the entrance and exit of desulfurization defluorinate device, calcining kiln exit, the exit of blowdown is all provided with
It is equipped with temperature sensor), 150 DEG C ± 5 DEG C of default point temperatures are the fiducial temperature of the system, are appointed in system is detected
During temperature jump Δ t >=10 DEG C of meaning test point, temperature sensor sends accident alarming command signal, in electrical tar precipitator 2
Cold water fire-fighting spraying starts, and to being passed through steam in system pipeline.
A kind of carbon anode roasting gas cleaning minimum discharge system of the present invention and technique can realize dedusting fume emission
Index reaches following national standard：
Particulate matter dust≤3mg/m3
Tarvia≤10mg/m3
SO2≤100mg/m3
Gu fluorine≤2mg/m3
Nitride≤100mg/m3
Strong carcinogen benzo (α) pyrene≤1.0 μ g/100m3。
Claims (10)
1. a kind of carbon anode roasting gas cleaning minimum discharge system, including spray cooler, electrical tar precipitator, desulfurization defluorinate
Device, the flue gas output end of spray cooler connects the smoke inlet of electrical tar precipitator, and the exhanst gas outlet of electrical tar precipitator passes through
Smoke exhaust fan connects the smoke inlet of desulfurization defluorinate device；Characterized in that, the anode system in the electrical tar precipitator is used
Multifunctional assembled bimodal slab anode row, cathod system uses rib type line and square line；Heat is provided with electrical tar precipitator
Water washing device.
2. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1, it is characterised in that described
Multifunctional assembled bimodal slab anode row is formed by fixedly connecting by several multi-functional bimodal slab anode rows, many work(
Can bimodal slab anode row include board-like main body, horizontal pipeline, pipe tunnel, horizontal pipeline is arranged on up and down the two of board-like main body
End, pipe tunnel is longitudinally disposed board-like main body, is interconnected between horizontal pipeline and pipe tunnel, in the outer of pipe tunnel
It is the steel plate of triangle that a layer cross section is wrapped up in side, and an angle of triangle is arranged in board-like main body, and two other angle is from board-like
The plate face of main body is outwardly formed projection.
3. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1, it is characterised in that described
Cathod system use major insulation overhung construction, the major insulation incubator of the structure including upper end, insulating protective cover high and
The suspension apparatus of lower end, insulating protective cover high is arranged between major insulation incubator and suspension apparatus.
4. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 3, it is characterised in that in institute
The bottom for stating major insulation incubator is provided with the cavity that height is 1m~1.5m, and the top of major insulation incubator is provided with heating
Device, heater is also equipped with the cavity of major insulation insulation lower box part.
5. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1, it is characterised in that in institute
The upper end for stating spray cooler is provided with two-way atomising device, and two-way atomising device is set to upper and lower two spray pipings, two
Demister is installed between individual spray piping, the bottom of spray cooler is provided with gas collecting apparatus.
6. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 5, it is characterised in that described
Gas collecting apparatus includes airflow-distribution board, exhanst gas outlet pipeline, ash bucket, hot coal oil heater, and airflow-distribution board is arranged on dust stratification
The upper end of bucket, exhanst gas outlet pipeline is arranged on the centre position of airflow-distribution board, and being provided with hot coal oil in the lower end of ash bucket adds
Hot device, pitch blowoff valve is provided with the bottom of ash bucket.
7. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1, it is characterised in that described
Electrical tar precipitator set quantity be 2, set 1 in an electrical tar precipitator wherein#With 2#Two electric fields, at another
3 are set in electrical tar precipitator#With 4#Two electric fields, 1#With 3#Electric field uses multifunctional assembled bimodal slab anode deploying square
Line cathode, 2#With 4#Electric field uses multifunctional assembled bimodal slab anode deploying rib type line cathode.
8. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1 or 7, it is characterised in that
Oily dirt separator is provided with the smoke inlet of the electrical tar precipitator, oily dirt separator includes deflector type airflow-distribution board, G
Type airflow-distribution board, ash bucket, ash bucket are arranged on the lower end of oily dirt separator, deflector type airflow-distribution board and G type airflow-distribution boards
Arranged in tandem from smoke inlet direction, G types airflow-distribution board includes the air flow method of several different pore sizes and percent opening
Plate, the hole on deflector type airflow-distribution board is delthyrium.
9. a kind of carbon anode roasting gas cleaning minimum discharge system according to claim 1, it is characterised in that described
Desulfurization defluorinate device includes pond, air inlet pipe, shower, demister, and the entrance of air inlet pipe is provided with spray equipment, and pond sets
Put in the bottom of desulfurization defluorinate device, the exhanst gas outlet of air inlet pipe is stretched into pond, in the top of desulfurization defluorinate device from up to
Under set gradually demister and shower, shower is connected by water pump with pond, and pond is additionally provided with discharge outlet and water supplement port.
10. the carbon anode roasting gas cleaning minimum discharge system described in a kind of utilization claim 1-9 any one is to roasting
Burn the technique that flue gas carries out purifying minimum discharge, it is characterised in that specific as follows：
Flue gas from calcination department enters from the smoke inlet of spray cooler upper end, flue gas by demister pre- dedusting
After filter, operation downwards, the spray piping of demister upper end carries out spray washing, the spray piping spray of demister lower end to demister
The water fog particle for going out is 20~40 μm, high-temperature flue gas is fully contacted with water smoke and carries out heat exchange, and flue gas is through water smoke
Washing, cooling, and condensed with water smoke, the flue gas through water smoke washing, cooling enters bottom entrainment of dust granule and the pitch of condensation
The gas collecting apparatus in portion, after the filter bypass of airflow-distribution board, flue gas is discharged from exhaust pass, into electrical tar precipitator；Washed
Wash and discharged from the pitch blowoff valve of gas collecting apparatus bottom with the pitch and dust granule for tentatively filtering down, hot coal oil heater pair
Ash bucket carries out heating and can prevent pitch cooled and solidified；
Flue gas initially enters the oily dirt separator of electrical tar precipitator, deflector type airflow-distribution board and G type gas in oily dirt separator
Flow point fabric swatch separates the part solid-state dust granules in flue gas from flue gas, and the dust separated falls into oily dirt and separates
The ash bucket of device lower end is simultaneously discharged；Flue gas then enters in the electric field of electrical tar precipitator, passes through through the flue gas after electrical tar precipitator dedusting
Smoke exhaust fan enters desulfurization defluorinate device；
From electrical tar precipitator discharge flue gas first through desulfurization defluorinate device air inlet pipe porch spray equipment spraying cooling, so
Afterwards into sufficient water-bath is carried out with water in pond, reacted with water after dissolving, the water temperature in pond is maintained at 20 DEG C~24
DEG C, flue gas by pond reclaimed water washing, the SO that will be remained in flue gas2, F and nitride cleaned, discharge then up, then
It is secondary to be washed through shower water, further absorb remaining a small amount of sulfide, fluoride, the clean flue gas after repeated washing in flue gas
Finally by the filtering again of demister, tar, dust in further purifying smoke eventually enter into chimney and enter air；
The hot cleaner set in electrical tar precipitator, is divided into heat water-spraying and cold water spray, and heat water-spraying can be online
Cleaning showers are carried out to electric field, cold water spray is fire-fighting spraying；The hot cleaner is in oily dirt separator, electrically trapped tar oil simultaneously
Hot wash pipeline is both provided with the ash bucket of device lower end, the hot water cleaning to oily dirt separator, electrical tar precipitator ash bucket is realized；
In whole flue gas emission, multiple spot sets temperature sensor, and the temperature of any test point becomes in system is detected
When changing Δ t >=10 DEG C, temperature sensor sends accident alarming command signal, and the cold water fire-fighting spraying in electrical tar precipitator starts,
And to being passed through steam in system pipeline.
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| CN107376625A (en) * | 2017-08-10 | 2017-11-24 | 中国铝业股份有限公司 | A kind of processing method of calcining carbon flue gas |
| CN109157957A (en) * | 2018-10-26 | 2019-01-08 | 航天环境工程有限公司 | A kind of ultra-clean processing method of electrolytic aluminium carbon anode roasting flue gas and the system and application for implementing this method |
| CN112170017A (en) * | 2020-10-09 | 2021-01-05 | 襄阳九鼎昊天环保设备有限公司 | System for clear away inside pitch scale deposit of electrical tar precipitator |
| CN116510494A (en) * | 2023-07-05 | 2023-08-01 | 湖南正明环保股份有限公司 | Desulfurizing and dust-removing device for flue gas containing tar |
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| CN112170017A (en) * | 2020-10-09 | 2021-01-05 | 襄阳九鼎昊天环保设备有限公司 | System for clear away inside pitch scale deposit of electrical tar precipitator |
| CN116510494A (en) * | 2023-07-05 | 2023-08-01 | 湖南正明环保股份有限公司 | Desulfurizing and dust-removing device for flue gas containing tar |
| CN116510494B (en) * | 2023-07-05 | 2023-09-26 | 湖南正明环保股份有限公司 | Desulfurizing and dust-removing device for flue gas containing tar |
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Application publication date: 20170531 |