CN107198926A - A kind of devices and methods therefor of baking carbon product gas cleaning - Google Patents
A kind of devices and methods therefor of baking carbon product gas cleaning Download PDFInfo
- Publication number
- CN107198926A CN107198926A CN201710528824.XA CN201710528824A CN107198926A CN 107198926 A CN107198926 A CN 107198926A CN 201710528824 A CN201710528824 A CN 201710528824A CN 107198926 A CN107198926 A CN 107198926A
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- China
- Prior art keywords
- flue
- flue gas
- baking
- carbon product
- tar precipitator
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004140 cleaning Methods 0.000 title claims abstract description 39
- 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
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000003546 flue gas Substances 0.000 claims abstract description 74
- 239000000779 smoke Substances 0.000 claims abstract description 44
- 239000012716 precipitator Substances 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000005373 pervaporation Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000003245 coal Substances 0.000 claims abstract description 25
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 24
- 238000000746 purification Methods 0.000 claims abstract description 18
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 10
- 230000003750 conditioning effect Effects 0.000 claims abstract description 6
- 239000010865 sewage Substances 0.000 claims abstract description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 19
- 230000023556 desulfurization Effects 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 18
- 238000005201 scrubbing Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 11
- 239000002910 solid waste Substances 0.000 claims description 11
- 238000013022 venting Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 238000006115 defluorination reaction Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims 2
- 239000003063 flame retardant Substances 0.000 claims 1
- 239000003595 mist Substances 0.000 claims 1
- 150000002222 fluorine compounds Chemical class 0.000 abstract description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000011269 tar Substances 0.000 description 30
- 238000005516 engineering process Methods 0.000 description 6
- 206010022000 influenza Diseases 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002641 tar oil Substances 0.000 description 1
- 230000009466 transformation Effects 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
- 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
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
-
- 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
-
- 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
- B01D2251/604—Hydroxides
-
- 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
Abstract
The invention discloses a kind of devices and methods therefor of baking carbon product gas cleaning, its scheme is to utilize glance coal, the part dust in electrical tar precipitator purifying smoke, utilizes the dust of sulfur dioxide, fluoride and residual in wet desulphurization, defluorinate purification techniques purifying smoke.The waste water that wet desulphurization, defluorinate purification technique are produced is atomized after treatment to be sprayed into flue gas conditioning in the pervaporation spray cooling tower before electrical tar precipitator, handles waste water evaporating completely while realizing.The present invention not only meets the purification to harmful components such as the glance coal in baking carbon product flue gas, sulfur dioxide, dust, fluorides, also achieves wastewater zero discharge.In addition, the system of the present invention also has, automaticity is high, handled using sewage treatment plant of plant area after reclaimed water, the characteristics of operating cost is low.
Description
Technical field
The present invention relates to industrial production technology field, a kind of device more particularly, to baking carbon product gas cleaning and
Its method.
Background technology
In the industrial production, aluminum smelting technology anode, negative electrode roasting and steel-making, silicon smelting etc. are existed using electrode class carbon product
It is existing net containing harmful substances such as sulfur dioxide, glance coal, dust and fluorides in the flue gas that its baked for producing process is produced
Chemical industry skill generally purifies baking flue gas using the combination method of electrical tar precipitator or the absorption of electrical tar precipitator+aluminum oxide or powdered carbon,
Electrical tar precipitator purification technique can only most of glance coal and part dust in purifying smoke, to the fluoride and dioxy in flue gas
Changing sulphur can not purify, and also very limited to the detergent power of dust, it is impossible to meet increasingly strict environmental requirement；Electrically trapped tar oil
Device+aluminum oxide or the combination method of powdered carbon absorption can effectively in purifying smoke glance coal, dust and fluoride, but can not remove
Sulfur dioxide in flue gas, powder also returns to technique productions, more or less meeting as raw materials for production after combination method absorption in addition
Subsequent technique is exerted an adverse impact.
In view of problem and increasingly strict environmental requirement present in baking carbon product flue gas purifying technique at present, existing
The deficiency of technology becomes increasingly conspicuous, and is badly in need of the innovation of carry out technology.
The content of the invention
It is an object of the invention to provide a kind of devices and methods therefor of baking carbon product gas cleaning, to solve at present
Problem present in baking carbon product flue gas purifying technique.
What the present invention was realized in：
The present invention uses a kind of device of baking carbon product gas cleaning, including for being passed through the roasting cigarette of baking flue gas
Gas smoke pipe, baking flue gas smoke pipe connection pervaporation spray cooling tower, pervaporation spray cooling tower connects electricity by the first flue
Tar device is caught, electrical tar precipitator is connected smoke evacuation after being crossed by the second flue with the first by-pass flue drawn from the first flue
Blower fan, the smoke exhaust fan separates the 4th flue and the second by-pass flue by the 3rd flue, wherein, the 4th flue is connected to de-
Chimney at the top of the middle and lower part side of sulphur, defluorinate scrubbing tower, the second by-pass flue connection desulfurization, defluorinate scrubbing tower；In desulfurization, take off
Fluorine scrubbing tower lower side is provided with slurries discharge pipe, and reuse clear liquid pipe is provided with above slurries discharge pipe；Slurries discharge pipe passes through
Wastewater treatment equipment is connected after being closed after one solid waste dehydration device with reuse clear liquid manifold；Wastewater treatment equipment is by after processing
Water pipe connection spraying vavle shelf system, spraying vavle shelf system connects back to pervaporation by water pipe in spray and compressed air hose and sprayed
The spray nozzle at the top of cooling tower.
Further, temperature-detecting device is provided with front of baking flue gas smoke pipe；In the pervaporation spray cooling tower and
The bottom of electrical tar precipitator is provided with insulation blowoff valve；It is provided with and lets out in the end of the first flue, the second flue and the first by-pass flue
Quick-fried valve；Glance coal special-purpose thermal insulation valve is provided with the two ends of electrical tar precipitator and the first by-pass flue；The two of smoke exhaust fan
Side is respectively equipped with fans entrance valve and fan outlet valve；The first sealing valve is provided with the 4th flue, on the second by-pass flue
Provided with the second sealing valve；Solid waste repository is provided with solid waste dehydration device bottom；Compressed air is provided with spraying vavle shelf system
Source and compressed air steam line.
The present invention also proposes a kind of method of the baking carbon product gas cleaning using the device, and this method is so
, baking flue gas purification uses glance coal and part dust in electrical tar precipitator purifying smoke first, and then flue gas enters wet
Method desulfurization, defluorination process purify the sulfur dioxide in flue gas, fluoride and residual dust, and wet desulphurization, defluorination process are produced
Waste water spray into pervaporation before electrical tar precipitator and handle, realize and do not produce the useless pollution of two not good liquors while gas cleaning.
Baking flue gas, which enters, carries out modifier treatment before electrical tar precipitator, flue gas in baking flue gas smoke pipe in pervaporation by spraying
In fog cooling tower cooling, moisture conditioning processing, it is quenched after flue gas enter electrical tar precipitator complete to glance coal in flue gas and portion
Divide the purification of dust.
The water that flue gas cools in pervaporation spray cooling tower, moisture conditioning processing is required is washed from wet desulphurization, defluorinate
Wash the waste water of tower generation.
Baking flue gas flue gas after electrical tar precipitator is purified is entered after smoke exhaust fan supercharging by the by the second flue
Three flues, which enter desulfurization, defluorinate scrubbing tower, to be completed to purify the sulfur dioxide in flue gas, fluoride and residual dust.
Desulfurization, defluorinate scrubbing tower use wet cleaning technique, and the waste water of generation initially enters water treatment facilities by processing
Rear reclaimed water enters spraying vavle shelf system, sprayed into after reclaimed water is atomized completely by accurately controlling compressed air pervaporation spray it is cold
But tower is realized to the quenched of flue gas, also completes the wastewater treatment produced to wet cleaning system.
Be calcined flue catch fire or there is a possibility that human life's property suffer heavy losses accident when baking flue gas pass through
Pervaporation spray cooling tower processing is crossed, the glance coal special-purpose thermal insulation valve of electrical tar precipitator import and export is then shut off, opened by the of first
The glance coal special-purpose thermal insulation valve of smoke uptake, flue gas enters the 3rd cigarette by the fans entrance valve and fan outlet valve of smoke exhaust fan
Road, opens the second sealing valve of the second by-pass flue, closes desulfurization, the first sealing valve of defluorinate scrubbing tower gas approach so that
Smoke directly ventilating, to ensure not occur major accident；In addition, when flue gas produces explosion danger by explosion venting valve come venting of dust explosion.
Fire fighting extinguisher is set on baking flue gas smoke pipe, and electrical tar precipitator import and export and the first by-pass flue set resistance
Fiery device.
Wet cleaning in desulfurization, defluorinate scrubbing tower uses the reclaimed water after the processing of sewage treatment plant of plant area with water.
The technical principle and technique effect of the present invention is as follows：
The present invention will be calcined using pervaporation spray cooling tower produces flue gas cool-down, humidification modifier treatment, it is ensured that flue gas exists
There is higher purification efficiency in electrical tar precipitator；Then the pitch that quenched rear flue gas enters in electrical tar precipitator purifying smoke
Cigarette, crystallization salt and part flue dust in quenched use water water；Flue gas after electrical tar precipitator first class purification passes through main smoke evacuation
Sulfur dioxide, fluoride and the residual dust entered after blower fan supercharging in desulfurization, defluorinate scrubbing tower purifying smoke, it is clean after purification
Neat stress passes through smoke stack emission.
The present invention can also realize to be to avoid major accident from occurring to use as Emergency Venting System in emergency situations；This
Invention sets fire fighting extinguisher, and system switches to by-pass flue in the case of fire incident, then automatic start fire pump,
Fire-fighting above-water method is sprayed into flue before pervaporation spray cooling tower, while vavle shelf system spray variable frequency pump completely frequency of spraying starts
Water is sprayed into pervaporation spray cooling tower, while opening electrical tar precipitator import and export and by-pass flue glance coal special-purpose thermal insulation valve
The spark arrester that place is installed prevents flame from entering electrical tar precipitator.The present invention sets multi-step temperature to detect in baking flue gas smoke pipe position
Device is used for detecting whether flue catches fire, when automatic control system judges the automatic start fire-fighting fire extinguishing side immediately that caught fire in flue
Case.
The waste water that wet cleaning technique in the present invention is produced is handled into water treatment facilities；Reclaimed water after processing passes through spray
Drench penetrating pervaporation spray cooling tower after Waste water utilization compressed air is atomized by vavle shelf system all to evaporate moisture, crystallized in water
Salt enters with flue gas to be collected in electrical tar precipitator, can avoid producing two not good liquors and giving up polluting with solid waste.
Of the invention is to avoid valve bonding tarvia on flue from can not being turned on and off adding using steam, conduction oil or electricity
Hot mode heating and thermal insulation processing, to ensure the normal of valve working.
The method that the present invention proposes such a baking carbon product gas cleaning, in view of baking carbon product cigarette at present
Problem present in gas purification technique and the increasingly strict environmental requirement present invention arise at the historic moment, and the present invention can effectively purify charcoal
Wet cleaning technique spirit in sulfur dioxide, fluoride, glance coal and dust, and the present invention in cellulose product baked for producing flue gas
It is living, the ripe wet cleaning technique such as limestone-gypsum method, quick lime-gypsum, double subtractions can be used.Conventional wet purifies work
Skill is inevitably generated waste water, easily causes the secondary pollution to environment, the present invention can according to cleaning system own characteristic
The waste water consumption that wet cleaning is produced, has prevented the secondary pollution of sewage.
In addition, the water that wet cleaning technique is used in the present invention can be using the reclaimed water after the purification of sewage treatment plant of plant area, can
Substantially reduce the operating cost of cleaning system.
Brief description of the drawings
Fig. 1 is the square law device layout drawing and process chart of baking carbon product gas cleaning of the present invention.
Mark in accompanying drawing for：1- baking flue gas, 2- baking flue gas smoke pipes, 3- insulation blowoff valves, 4- pervaporations spraying is cold
But by tower, the flues of 5- first, 6- glance coal special-purpose thermal insulation valves, 7- electrical tar precipitators, 8- explosion venting valves, the flues of 9- second, 10- first
Smoke uptake, 11- fans entrance valves, 12- smoke exhaust fans, 13- fan outlet valves, the flues of 14- the 3rd, the sealing valves of 15- first, 16-
4th flue, the by-pass flues of 17- second, the sealing valves of 18- second, 19- desulfurization, defluorinate scrubbing tower, 20- butterfly valves, 21- chimneys, 22-
At slurries discharge pipe, 23- solid waste dehydration devices, 24- solid waste repositories, the waste water that 25- wet cleanings system is produced, 26- waste water
Device is managed, middle water pipe after 27- processing, 28- compressed air sources, 29- compressed air steam lines, 30- spraying vavle shelf systems, 31-
Water pipe in spray, 32- compressed air hoses, 33- spray nozzles, 34- reuse clear liquid pipes, 35- temperature-detecting devices.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The implementation initial design parameters of the present invention are from baking carbon product production sulfur dioxide in flue gas, dust, fluorine
Concentration (the mg/Nm of compound, glance coal3), baking flue gas temperature and flue gas total displacement etc..According to technique productions Gas Parameters to net
Change lectotype selection, by accurately controlling the flow of spray nozzle 33 to control flue-gas temperature in 75~95 DEG C of scopes；Flue gas after modulation
Into electrical tar precipitator 7, after flue gas conditioning electrical tar precipitator 7 can keep in a higher purification efficiency, purifying smoke
Glance coal, crystallization salt and part flue dust in quenched use water water；Flue gas passes through smoke evacuation after the first class purification of electrical tar precipitator 7
Blower fan 12 enters desulfurization, the sulfur dioxide in the purifying smoke of defluorinate scrubbing tower 19, fluoride and residual after being pressurized through the 4th flue 16
Remaining dust, the clean flue gas after purification is discharged by scrubbing tower top chimney 21.
Wet cleaning technique in inventive desulfurization, defluorinate scrubbing tower 19 uses the reliable limestone-gypsum of technology maturation
Method, quick lime-gypsum, double subtractions etc., such a wet cleaning technique are inevitably generated waste water, and wet cleaning system is produced
Waste water 25 initially enter reclaimed water after water treatment facilities 26 such as settles, filtered, neutralizing by physics at the pretreatment and enter spraying vavle shelf
System 30, is realized by accurately controlling compressed air to spray into pervaporation spray cooling tower 4 after the reclaimed water after processing completely atomization
To the quenched of flue gas, the waste water 25 that wet cleaning system is produced is handled while also completing.
Tar, the crystal salt in quenched use water water and the part dust collected after the purifying smoke of electrical tar precipitator 7 periodically lead to
The discharge commission third party of insulation blowoff valve 3 is crossed to focus on；The solid waste that solid waste dehydration device 23 is produced after being dehydrated is temporary solid
Useless repository 24, periodically transports slag landfill disposal to.
When roasting technique, which is produced, to break down, the present invention can be used as emergent accident ventilating system, specific embodiment party
Case is：Baking flue gas 1 is then shut off the import and export glance coal of electrical tar precipitator 7 by the cooling of pervaporation spray cooling tower 4 processing
Special-purpose thermal insulation valve 6, opens the glance coal special-purpose thermal insulation valve 6 of the first by-pass flue 10, and flue gas passes through the fans entrance of smoke exhaust fan 12
Valve 11 and fan outlet valve 13 enter the 3rd flue 14, open the second sealing valve 18 of the second by-pass flue 17, close desulfurization, take off
First sealing valve 15 of the gas approach of fluorine scrubbing tower 19 so that smoke directly ventilating, to ensure not occur major accident；In addition, working as cigarette
Explosion time occurs for road or roaster can be by the explosion venting valve 8 that is configured on flue come venting of dust explosion, it is ensured that the safety of system.
When fire occurs for baking flue gas flue, being installed on the temperature-detecting device 35 of the position of baking flue gas smoke pipe 2 can stand
Find and signal is uploaded to purification central control system, control system automatically turns on fire fighting extinguisher.Embodiment is：System
Flue gas is automatically switched to the first by-pass flue 10 of electrical tar precipitator 7, the import and export glance coal for closing electrical tar precipitator 7 is special
With thermal insulation valve 6, while spraying into fire water in automatic start fire pump, the baking flue gas smoke pipe 2 before pervaporation spray cooling tower 4
Fire extinguishing, while the spray variable frequency pump completely frequency work in vavle shelf system 30 of spraying will be cold in water penetrating pervaporation spray cooling tower 4
But flue gas, while the glance coal for opening the import and export glance coal special-purpose thermal insulation valve 6 of electrical tar precipitator 7 and the first by-pass flue 10 is special
Propagation of flame is prevented with the spark arrester installed at thermal insulation valve 6.
Certainly, it is the concrete application example of the present invention above, the present invention also has other embodiments, all using equivalent
Replacement or the technical scheme of equivalent transformation formation, all fall within protection domain of the presently claimed invention.
Claims (10)
1. a kind of device of baking carbon product gas cleaning, it is characterised in that：Including the roasting for being passed through baking flue gas (1)
Flue gas smoke pipe (2), the baking flue gas smoke pipe (2) connection pervaporation spray cooling tower (4), pervaporation spray cooling tower (4) passes through
First flue (5) connection electrical tar precipitator (7), electrical tar precipitator (7) is by the second flue (9) with drawing from the first flue (5)
Connection smoke exhaust fan (12) after the first by-pass flue (10) gone out crosses, the smoke exhaust fan (12) is separated by the 3rd flue (14)
4th flue (16) and the second by-pass flue (17), wherein, the 4th flue (16) is connected in desulfurization, defluorinate scrubbing tower (19)
Chimney (21) at the top of lower side, the second by-pass flue (17) connection desulfurization, defluorinate scrubbing tower (19)；Washed in desulfurization, defluorinate
Tower (19) lower side is washed provided with slurries discharge pipe (22), reuse clear liquid pipe (34) is provided with above slurries discharge pipe (22)；Slurry
Liquid discharge pipe (22) is connected wastewater treatment equipment after converging after a solid waste dehydration device (23) with reuse clear liquid pipe (34)
(26)；Wastewater treatment equipment (26) is by middle water pipe (27) connection spraying vavle shelf system (30) after processing, vavle shelf system of spraying
(30) spraying at the top of pervaporation spray cooling tower (4) is connected back to by water pipe in spray (31) and compressed air hose (32)
Nozzle.
2. the device of baking carbon product gas cleaning according to claim 1, it is characterised in that：In the baking flue gas
Temperature-detecting device (35) is provided with front of smoke pipe (2)；At the bottom of the pervaporation spray cooling tower (4) and electrical tar precipitator (7)
Portion is provided with insulation blowoff valve (3)；Venting of dust explosion is provided with the end of the first flue (5), the second flue (9) and the first by-pass flue (10)
Valve (8)；Glance coal special-purpose thermal insulation valve (6) is provided with the two ends of electrical tar precipitator (7) and the first by-pass flue (10)；In row
The both sides of cigarette blower fan (12) are respectively equipped with fans entrance valve (11) and fan outlet valve (13)；Provided with the on the 4th flue (16)
One sealing valve (15), is provided with the second sealing valve (18) on the second by-pass flue (17)；Set in solid waste dehydration device (23) bottom
There is solid waste repository (24)；Compressed air source (28) and compressed air steam line are provided with spraying vavle shelf system (30)
(29)。
3. a kind of method of the baking carbon product gas cleaning of the device described in use claim 1 or 2, it is characterised in that：
Baking flue gas (1) purification uses glance coal and part dust in electrical tar precipitator (7) purifying smoke first, and then flue gas enters
Wet desulphurization, defluorination process purify the sulfur dioxide in flue gas, fluoride and residual dust, wet desulphurization, defluorination process production
Raw waste water sprays into pervaporation before electrical tar precipitator (7) and handled, and realizes and does not produce the useless pollution of two not good liquors while gas cleaning.
4. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Baking flue gas (1) enters
Enter and modifier treatment carried out before electrical tar precipitator (7), flue gas by baking flue gas smoke pipe (2) in pervaporation spray cooling tower (4)
It is middle cooling, moisture conditioning processing, it is quenched after flue gas enter electrical tar precipitator (7) complete to glance coal in flue gas and part dust
Purification.
5. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Flue gas sprays in pervaporation
The waste water that water in fog cooling tower (4) needed for cooling, moisture conditioning processing is produced from wet desulphurization, defluorinate scrubbing tower (19).
6. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Baking flue gas (1) is passed through
Flue gas after electrical tar precipitator (7) purification is crossed by the second flue (9) to enter after smoke exhaust fan (12) supercharging by the 3rd flue
(14) enter desulfurization, defluorinate scrubbing tower (19) to complete to purify the sulfur dioxide in flue gas, fluoride and residual dust.
7. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Desulfurization, defluorinate washing
Tower (19) uses wet cleaning technique, and the waste water of generation initially enters the reclaimed water of water treatment facilities (26) after treatment and enters spray
Mist vavle shelf system (30), sprays into pervaporation spray cooling tower (4) real after reclaimed water is atomized completely by accurately controlling compressed air
Now to the quenched of flue gas, the wastewater treatment produced to wet cleaning system is also completed.
8. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Caught fire in roasting flue
Or there is a possibility that human life's property suffer heavy losses accident when baking flue gas (1) pass through pervaporation spray cooling tower
(4) handle, be then shut off the glance coal special-purpose thermal insulation valve (6) of electrical tar precipitator (7) import and export, open the first by-pass flue
(10) glance coal special-purpose thermal insulation valve (6), flue gas passes through the fans entrance valve (11) and fan outlet valve of smoke exhaust fan (12)
(13) enter the 3rd flue (14), open the second sealing valve (18) of the second by-pass flue (17), close desulfurization, defluorinate scrubbing tower
(19) the first sealing valve (15) of gas approach so that smoke directly ventilating, to ensure not occur major accident；In addition, in flue gas production
By explosion venting valve (8) come venting of dust explosion during raw explosion danger.
9. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Baking flue gas smoke pipe
(2) fire fighting extinguisher is set on, and electrical tar precipitator (7) import and export and the first by-pass flue (10) set fire retardant device.
10. the method for baking carbon product gas cleaning according to claim 3, it is characterised in that：Desulfurization, defluorinate washing
Wet cleaning in tower (19) uses the reclaimed water after the processing of sewage treatment plant of plant area with water.
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Application publication date: 20170926 |