CN107486000A - A kind of dioxin in flue gas removal device and technique - Google Patents
A kind of dioxin in flue gas removal device and technique Download PDFInfo
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- CN107486000A CN107486000A CN201710974181.1A CN201710974181A CN107486000A CN 107486000 A CN107486000 A CN 107486000A CN 201710974181 A CN201710974181 A CN 201710974181A CN 107486000 A CN107486000 A CN 107486000A
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- flue gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000003546 flue gas Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 18
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 92
- 238000010521 absorption reaction Methods 0.000 claims abstract description 35
- 239000012028 Fenton's reagent Substances 0.000 claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims description 23
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 8
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 8
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- -1 Hydroxyl radical free radical Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 208000001348 Chloracne Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010019851 Hepatotoxicity Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 241000405414 Rehmannia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 208000010399 Wasting Syndrome Diseases 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003754 fetus Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100000025 genetic toxicology Toxicity 0.000 description 1
- 230000001738 genotoxic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000304 hepatotoxicity Toxicity 0.000 description 1
- 230000007686 hepatotoxicity Effects 0.000 description 1
- 230000007688 immunotoxicity Effects 0.000 description 1
- 231100000386 immunotoxicity Toxicity 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000006651 lactation Effects 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 210000002826 placenta Anatomy 0.000 description 1
- 230000028742 placenta development Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 210000001541 thymus gland Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- 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
- B01D53/14—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 by absorption
- B01D53/1487—Removing organic 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
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic 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
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- 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
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention is a kind of dioxin in flue gas removal device and technique.Apparatus of the present invention include absorption tower, it is arranged on the smoke air inlet of absorption tower side lower and the flue gas gas outlet being arranged at the top of absorption tower, inside the absorption tower the first absorbed layer is disposed with along smoke movement direction, second absorbed layer and demisting layer, first absorbed layer includes liquid header, rectification porous plate, ring-type uviol lamp, nozzle, second absorbed layer includes liquid header, flue gas redistributor, ring-type uviol lamp, nozzle, pending flue gas chemically reacts under the irradiation of the ring-type uviol lamp with the Fenton reagent sprayed in the nozzle.The flue gas containing bioxin is handled using the present apparatus, circulation twice can be carried out to flue gas and is washed, gas-liquid mixed and mass transfer intensity in absorbing tower is increased, is advantageous to the removal efficiency of raising system bioxin, being capable of depth Li bioxin.
Description
Technical field
The invention belongs to fume treatment field, and in particular to a kind of dioxin in flue gas removal device and technique.
Background technology
Bioxin (general name of dioxa glutinous rehmannia) Shi dioxins materials, including all much like numerous of numerous structures and property
Two major class organic compounds of congener or isomers, belong to persistent organism (POPs).Bioxin includes 120 kinds of chemical combination
Thing, be it is colourless have a supervirulent liposoluble substance, chemical property is stable, is not easily decomposed in nature, fusing point is higher, pole
Water is insoluble in, is very easy to accumulate in vivo, harm to the human body is serious, there is lethal effect and " Wasting Syndrome ", thymus gland
Atrophy, immunotoxicity, hepatotoxicity, chloracne, genotoxicity, development toxicity and teratogenesis, carcinogenicity etc..Wherein with 2,3,7,
8- tetrachloros dibenzo-most strong to-bioxin (TCDD) toxicity, it is that compound Poisoning is maximum so far and has the material of a variety of toxicity
One of.Being discharged into bioxin in atmospheric environment can adsorb on particulate matter, be deposited to water body and soil, then pass through food
The enrichment of chain enters human body.Food is the main source of bioxin in people's body.Through placenta and lactation can cause fetus and
Infant bioxin exposes.Often in contact with people be easier to obtain cancer.
Bioxin more than ninety percent derives from the industrial enterprise of some heavy contaminations, such as steel-making, firepower hair in atmospheric environment
Combustion of industrial boiler such as electricity etc., doped fuel, coal, the timber of preservative treatment and oil product, various discarded objects are particularly
Biohazard Waste easily produces bioxin when ignition temperature is less than 300-400 DEG C.The discharging standards of existing bioxin
Have《Dangerous waste incineration contamination control standard (GB18484-2001)》(0.5ng TEQ/Nm3),《Consumer waste incineration pollution control
Standard (GB18485-2014) processed》(0.1ng TEQ/Nm3).Therefore, bioxin should be removed during China's fume emission, reached
While to discharging standards, our good ecological environments are safeguarded.
The method of processing bioxin has bag-type dust, charcoal absorption, catalytic decomposition, chemical treatment, flue gas chilling now
With electron beam etc..The A of CN 106669418 disclose a kind of steel sintering smoke comprehensive desulphurization and denitration and remove the dress of bioxin
Put and method, the device mainly include GGH heat exchangers, fume heating furnace, ammonia-spraying grid, SCR reactors, gas-water heat exchanger,
Booster fan, water circulating pump, desulfurizing tower, chimney etc., bioxin in flue gas can be removed, but by main exhausting after its removing dust
Machine is sent into desulfurizing tower removing SO2, then delivers to SCR reactors again and carries out denitration and remove bioxin, does not remove two emphatically
Evil English, technique effect can not be notable.The U of CN 202654923 disclose exhaust treatment system, and mainly circulation of fluid bed is half-dried
Formula deacidification device, it includes a reactor, a cyclone being connected with the reactor, one and the reactor and institute
The recycling storage groove and an alkaline agent injection device being connected with the reactor of cyclone connection are stated, passes through inert substance
Alkaline agent with being provided by alkaline agent injection device forms a fluidized constituent for removing bioxin, is absorbed suitable for half dry type
Tower.
To sum up, these methods respectively have advantage and disadvantage, and in the market stills need a kind for the treatment of technology and equipment of efficient bioxin.
The content of the invention
It is an object of the invention to provide a kind of less energy consumption, operating cost is low, the removal flue gas that can continually and steadily run
Zhong bioxin device and technique.
It is an object of the invention to disclose a kind of dioxin in flue gas removal device, for achieving the above object, this
It is as follows to invent the technical scheme taken.
A kind of dioxin in flue gas removal device, including absorption tower, the smoke air inlet for being arranged on absorption tower side lower
With the flue gas gas outlet being arranged at the top of absorption tower, the first absorbed layer, are disposed with from bottom to top inside the absorption tower
Two absorbed layers and demisting layer, it is porous that first absorbed layer includes being arranged on the first liquid header of absorb the bottom of the tower, rectification
Plate, the first ring-type uviol lamp, first jet, the smoke air inlet are located at the first liquid header and rectification in the height of side wall
Between porous plate, second absorbed layer includes second liquid collector, flue gas redistributor, the second ring-type uviol lamp, second
Nozzle, first liquid header are pumped into the mouth of a river with first circulation by pipeline and are connected, and the second liquid collector passes through
Pipeline is pumped into the mouth of a river with second circulation and is connected；The demisting layer includes high-efficient wet-type electric cleaner；The first jet and first
Circulating pump delivery port connects, and the second nozzle pumps out the mouth of a river with second circulation and is connected, and pending flue gas is in the ring-type
Chemically reacted under the irradiation of uviol lamp with the Fenton reagent sprayed in the nozzle.
Preferably, the first absorbed layer rectification porous plate be arranged to open on the plate of a diameter of tower body internal diameter it is multiple
Circular aperture, percent opening 50-80%, preferred value 58%.
Preferably, the redistributor includes the tracheae of several Venturi tubes, i.e., described flue gas redistributor
Smoke inlet diameter is less than top exhanst gas outlet diameter below tracheae, and middle part is thinner and cambered and in lower section entrance, pipe
It is round and smooth；The tracheae of the redistributor is embedded in the second absorbed layer liquid header, the tracheae of the redistributor
Liquid level when highly higher than the second absorbed layer liquid header operation；The tracheae is provided with several, horizontal with tower body
Symmetrically inlayed centered on kernel of section.
Preferably, the first ring-type uviol lamp and the second ring-type uviol lamp are annular shape, if having dried layer lamp, lamp
Pipe is annular lamp tube, as the shape of baked donut, can be lighted everywhere, therefore using tower body inwall the bottom of as, it is close to tower body inwall, irradiation is purple
The angle of outside line is more than 180 °, and ultraviolet can be made to cover whole tower body；The spray angle of the first jet and second nozzle is big
In 120 °, the liquid of ejection is in vaporific, can cover whole tower body inner section.
Preferably, first liquid header and second liquid collector are in inversed-cone shape, summit is horizontal in tower body
Section home position, facilitates liquid to collect, and does not stay dead angle.
Preferably, also including charge pump, Scatula, the Scatula is internally provided with configured Fenton reagent；Institute
State Scatula to be connected by pipeline with the charge pump water inlet, the delivery port of charge pump first passes through the suction by pipeline
Receive tower side wall to connect inside the absorption tower, positioned at the top of first liquid header；The delivery port of charge pump second
Connected by pipeline through the absorption tower side wall inside the absorption tower, positioned at the top of the second liquid collector.
Preferably, also including the first waste liquid discharge pipe and the second waste liquid discharge pipe, the first waste liquid discharge pipe is set
In the middle part of the pipeline that first liquid header is connected with the first circulation pump, the second waste liquid discharge pipe is arranged on institute
State in the middle part of the pipeline that second liquid collector is connected with the second circulation pump.
Preferably, also including pH meter and liquid level gauge, the pH meter and liquid level gauge are arranged at the first liquid of tower body bottom
In body collector, the pH meter and liquid level gauge pass through electronic circuit and the first waste liquid discharge pipe, the second waste liquid discharge pipe, dosing pump
Valve switch connection.
Preferably, the Fenton reagent is made up of ferrous ion and hydrogen peroxide, ferrous ion and hydrogen peroxide rub
You are than being 1:1-1:5, preferred value 1:3.
Another object of the present invention is to disclose a kind of dioxin in flue gas to remove technique, for achieving the above object,
The technical scheme that the present invention takes is as follows.
(1) Fenton reagent is proportionally configured in the Scatula and completed, on demand will examination by the dosing pump
Agent is added in the absorption tower；
(2) flue gas enters the first absorbed layer from smoke air inlet, and flue gas is by the smooth air-flow of rectification porous plate, then
Reacted under the irradiation of the first ring-type uviol lamp with the Fenton reagent sprayed in the first jet, spray the Fenton examination got off
Agent is collected by first liquid header, and being circulated again into first jet by the first circulation pump is sprayed, and flue gas is completed
Circulation washing for the first time；
(3) flue gas by the step (2) processing enters the second absorbed layer, and flue gas is put down by the flue gas redistributor
Whole air-flow, then reacted under the irradiation of the second ring-type uviol lamp with the Fenton reagent sprayed in the second nozzle, spray
The Fenton reagent to get off is collected by the second liquid collector, and being circulated again into second nozzle by the second circulation pump sprays
Go out, flue gas completes second of circulation washing；
(4) flue gas by the step (3) processing removes the steam of entrainment by demisting layer；
(5) flue gas by the step (4) processing is discharged by the flue gas gas outlet at top.
Relative to prior art, the present invention achieves beneficial technique effect：
1. the first absorbed layer and the second absorbed layer circulate washing twice, it is strong to increase gas-liquid mixed and mass transfer in absorbing tower
Degree, be advantageous to the removal efficiency of raising system bioxin；
2. Fenton reagent of the pending flue gas with being sprayed in nozzle under ring-type ultra violet lamp chemically reacts, ultraviolet
Light can produce synergy with Fenton reagent, improve the degradation rate of organic matter, being capable of efficient depth Li bioxin；
3. it is reasonable that technique is set, the utilization ratio of device can not only be improved, reduces the complexity of technique again.
Brief description of the drawings
Fig. 1 apparatus structure schematic diagrams；
Fig. 2 liquid headers and flue gas redistributor close-up schematic view；
Fig. 3 rectification porous plate close-up schematic views
Reference：Absorption tower 1, smoke air inlet 2, the first liquid header 3, rectification porous plate 4, the first ring-type are ultraviolet
Lamp 5, first jet 6, second liquid collector 7, flue gas redistributor 8, the second ring-type uviol lamp 9, second nozzle 10, high-efficiency wet
Formula electric cleaner 11, flue gas gas outlet 12, the second waste liquid discharge pipe 13, second circulation pump 14, the first waste liquid discharge pipe 15, first
Circulating pump 16, dosing pump 17, Scatula 18, the first delivery port of dosing pump 19, the second delivery port of dosing pump 20.
Embodiment
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fenton reagent is by ferrous ion (Fe2+) and hydrogen peroxide (H2O2) composition system, it can generate strong oxidizing property
Hydroxyl radical free radical (OH), oxidation reaction occur with hardly degraded organic substance be in aqueous allowed to structure to destroy, final oxidation
Decompose.Ultraviolet light (UV) can produce synergy with Fenton reagent, and due to some hydroxo complexes of iron, photosensitizer can to occur anti-
OH (Fe (OH) should be generated2+-Fe2++ OH), and organic matter can decomposed under ultraviolet light, improve the degraded of organic matter
Rate.It is difficult to the organic matter degraded in the reaction of general biological and chemical so can apply and degrade.Because bioxin is a kind of organic
Thing rather than a kind of organic matter, so without specific reaction equation.Fenton reagent has following features：Oxidability is strong；Cross
Hydrogen oxide resolves into the speed of hydroxyl radical free radical quickly, and oxidation rate is also higher；Hydroxyl radical free radical have very high electronegativity or
Electrophilicity；Treatment effeciency is higher, and other impurities are not introduced in processing procedure, will not produce secondary pollution；Due to being a kind of physics
Chemical treatment method, it is easy to be controlled by, readily satisfy processing requirement；Both can be used alone, can also be with other techniques
It is used in combination, to reduce cost, improves treatment effect, can be combined with biological treatment, as the pretreatment of biological treatment, improves
Wastewater biodegradability, or as the advanced treating after biological treatment, improve the water quality of water outlet；Interfering material in waste water is held
Stronger by ability, operation is easier with plant maintenance, and use range is wider.
As shown in figure 1, absorption tower 1 is in hollow cylinder, smoke air inlet 2 is arranged on the left lower of absorption tower 1, higher than position
Between the first liquid header 3 and rectification porous plate 4, flue gas gas outlet 12 is arranged on the top on absorption tower 1.Absorption tower 1 is certainly
The first absorbed layer, the second absorbed layer and demisting layer are provided with down.First absorbed layer includes the first liquid header 3, rectification
Porous plate 4, the first ring-type uviol lamp 5, first jet 6, the second absorbed layer include second liquid collector 7, flue gas redistributor
8th, the second ring-type uviol lamp 9, second nozzle 10, demisting layer include high-efficient wet-type electric cleaner 11.First liquid header 3
It is connected by pipeline with the water inlet of first circulation pump 16, the water inlet of first circulation pump 16 is connected with first jet 6, the first liquid
The first waste liquid discharge pipe 15 is provided with the middle part of the pipeline that body collector 3 and first circulation pump 15 connect；The second liquid is collected
Device 7 is connected by pipeline with the water inlet of second circulation pump 14, and the water inlet of first circulation pump 14 is connected with second nozzle 10, the
The second waste liquid discharge pipe 13 is provided with the middle part of the pipeline that two liquid headers 7 and second circulation pump 14 connect.
Scatula 18 is connected with the water inlet of charge pump 17 by pipeline, and the delivery port 19 of charge pump 17 first passes through
Pipeline is connected inside the absorption tower 1 through the side wall of absorption tower 1, and the side wall junction of absorption tower 1 is located at described first
The top of liquid header 3, the delivery port 20 of charge pump 17 second pass through described in pipeline through the side wall of absorption tower 1 connection
Inside absorption tower 1, the side wall junction of absorption tower 1 is located at the top of the second liquid collector 7.Set inside Scatula 18
Fenton reagent is equipped with, absorption tower is pumped into by charge pump 11, flows into first liquid header 3 and the second liquid collector
7, washed subsequently into circulation.
As described in Figure 2, the flue gas redistributor 8 includes the tracheae of several Venturi tubes, i.e., described flue gas divides again
Smoke inlet diameter is less than top exhanst gas outlet diameter below the tracheae of cloth device, and middle part is thinner and cambered and enters close to lower section
Mouthful, it is round and smooth in pipe；The tracheae of the flue gas redistributor 8 is embedded in the second liquid collector 7, the flue gas redistribution
The liquid level when height of the tracheae of device 8 is run higher than the second liquid collector 7；The tracheae is provided with several, with
Symmetrically inlayed centered on tower body cross-section center.
As shown in figure 3, the rectification porous plate 4 be arranged to open multiple circles on the plate of a diameter of tower body internal diameter it is small
Hole, percent opening 50-80%, preferred value 58%.
As preferred embodiment, in addition to pH meter and liquid level gauge；The pH meter and liquid level gauge are arranged at tower body bottom
The first liquid header in, the pH meter and liquid level gauge pass through electronic circuit and the first waste liquid discharge pipe, the second waste liquid is discharged
The valve switch connection of pipe, dosing pump.
As preferred embodiment, the mol ratio of the Fenton reagent ferrous ions and hydrogen peroxide is 1:1-1:5, it is excellent
Choosing value is 1:3.Fenton reagent in actual use due in course of reaction hydrogen peroxide consumption be more than ferrous ion, because
And to add hydrogen peroxide, it according to circumstances can also only add hydrogen peroxide.The dosage of required Fenton reagent is dense according to bioxin
What degree determined, the mass ratio of organic matter is about 1 in hydrogen peroxide and solution:1, the progress of reaction, pH controls can be estimated according to pH
The reaction efficiency highest in 3-4.
A kind of dioxin in flue gas removes technique, including following processing step：
(1) Fenton reagent is proportionally configured in the Scatula 18 and completed, by the dosing pump 17 on demand
Reagent is added in the absorption tower 1；
(2) flue gas enters the first absorbed layer from smoke air inlet 2, and flue gas is by the 4 smooth air-flow of rectification porous plate, so
Reacted afterwards under the irradiation of the first ring-type uviol lamp 5 with the Fenton reagent sprayed in the first jet 6, spray the sweet smell to get off
The reagent that pauses is collected by first liquid header 3, and being circulated again into first jet 6 by the first circulation pump 16 sprays,
Flue gas completes circulation washing for the first time；
(3) flue gas by the step (2) processing enters the second absorbed layer, and flue gas passes through the flue gas redistributor 8
Smooth air-flow, it is then anti-with the Fenton reagent that is sprayed in the second nozzle 10 under the irradiation of the second ring-type uviol lamp 9
Should, spray the Fenton reagent to get off and collected by the second liquid collector 7, the is circulated again into by the second circulation pump 14
Two nozzles 10 spray, and flue gas completes second of circulation washing；
(4) flue gas by the step (3) processing removes folder by the high-efficient wet-type electric cleaner 11 of demisting layer
The steam of band；
(5) flue gas by the step (4) processing is discharged by the flue gas gas outlet 12 at top.
As preferred embodiment, in addition to pH meter and level gauge joint automatic control system, control auto feed and
Discharge waste liquid；The automatic control system is by pH meter design control between 3-4.5, and by judging pH meter signal, control feeds
Pump feeds；The automatic control system is by judging liquid level gauge information, and the first waste liquid discharge pipe of control, the second waste liquid discharge pipe are certainly
Dynamic discharge waste liquid.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in embodiment disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although used in this specification
Some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the utility model.
Claims (10)
1. a kind of dioxin in flue gas removal device, it is characterised in that including absorption tower, be arranged on the cigarette of absorption tower side lower
Gas air inlet and the flue gas gas outlet being arranged at the top of absorption tower, the first suction is disposed with from bottom to top inside the absorption tower
Receive layer, the second absorbed layer and demisting layer, first absorbed layer includes being arranged on the first liquid header of absorb the bottom of the tower, whole
Porous plate, the first ring-type uviol lamp, first jet are flowed, the smoke air inlet is located at the first liquid header in the height of side wall
Between rectification porous plate, it is ultraviolet that second absorbed layer includes second liquid collector, flue gas redistributor, the second ring-type
Lamp, second nozzle, first liquid header are pumped into the mouth of a river with first circulation by pipeline and are connected, and the second liquid is collected
Device is pumped into the mouth of a river with second circulation by pipeline and is connected；The demisting layer includes high-efficient wet-type electric cleaner；The first jet
The mouth of a river is pumped out with first circulation to be connected, the second nozzle pumps out the mouth of a river with second circulation and is connected, and pending flue gas is in institute
State and chemically reacted under the irradiation of ring-type uviol lamp with the Fenton reagent sprayed in the nozzle.
2. device according to claim 1, it is characterised in that the porous board diameter of rectification is identical with tower body internal diameter, institute
State and multiple circular apertures are opened on rectification porous plate, percent opening 50-80%.
3. device according to claim 1, it is characterised in that the redistributor includes several Venturi tubes, institute
The tracheae for stating redistributor is embedded in the second absorbed layer liquid header, and the height of the tracheae of the redistributor is higher than
Liquid level during the second absorbed layer liquid header operation；The tracheae is provided with several, with tower body cross-section center
Centered on symmetrically inlay.
4. device according to claim 1, it is characterised in that the first ring-type uviol lamp and second ring-type are ultraviolet
Lamp is annular shape, is close to tower body inwall；The spray angle of the first jet and second nozzle is all higher than 120 °.
5. device according to claim 1, it is characterised in that first liquid header and second liquid collector are in
Inversed-cone shape, summit is in tower body cross section home position.
6. device according to claim 1, it is characterised in that also including charge pump, Scatula, set inside the Scatula
It is equipped with configured Fenton reagent；The Scatula is connected with the charge pump water inlet by pipeline, the charge pump first
Delivery port is connected inside the absorption tower by pipeline through the absorption tower side wall, positioned at the upper of first liquid header
Portion；The delivery port of charge pump second is connected inside the absorption tower by pipeline through the absorption tower side wall, positioned at described
The top of second liquid collector.
7. the device according to claim 1 or 6, it is characterised in that also arranged including the first waste liquid discharge pipe and the second waste liquid
Outlet pipe, the first waste liquid discharge pipe are arranged in the pipeline that first liquid header is connected with the first circulation pump
Portion, the second waste liquid discharge pipe are arranged in the middle part of the pipeline that the second liquid collector is connected with the second circulation pump.
8. the device according to claim 1 or 6, it is characterised in that also including pH meter and liquid level gauge, the pH meter and liquid level
Meter is arranged in the first liquid header of tower body bottom, and the pH meter and liquid level gauge are arranged by electronic circuit and the first waste liquid
The valve switch connection of outlet pipe, the second waste liquid discharge pipe, dosing pump.
9. the device according to claim 1 or 6, it is characterised in that the Fenton reagent is by ferrous ion and hydrogen peroxide
The mol ratio of composition, ferrous ion and hydrogen peroxide is 1:1-1:5.
10. a kind of remove technique using any one of claim 1-8 described device bioxin, it is characterised in that including following
Processing step：
(1) Fenton reagent is proportionally configured in the Scatula and completed, on demand added reagent by the dosing pump
Enter in the absorption tower；
(2) flue gas enters the first absorbed layer from smoke air inlet, and flue gas is by the smooth air-flow of rectification porous plate, then in institute
State and reacted under the irradiation of the first ring-type uviol lamp with the Fenton reagent sprayed in the first jet, spray the Fenton reagent quilt to get off
First liquid header is collected, and being circulated again into first jet by the first circulation pump sprays, and flue gas completes first
Secondary circulation washing；
(3) flue gas by the step (2) processing enters the second absorbed layer, and flue gas passes through the smooth gas of flue gas redistributor
Stream, then reacted under the irradiation of the second ring-type uviol lamp with the Fenton reagent sprayed in the second nozzle, spray is got off
Fenton reagent collected by the second liquid collector, by the second circulation pump be circulated again into second nozzle spray,
Flue gas completes second of circulation washing；
(4) flue gas by the step (3) processing removes the steam of entrainment by demisting layer；
(5) flue gas by the step (4) processing is discharged by the flue gas gas outlet at top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974181.1A CN107486000A (en) | 2017-10-19 | 2017-10-19 | A kind of dioxin in flue gas removal device and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974181.1A CN107486000A (en) | 2017-10-19 | 2017-10-19 | A kind of dioxin in flue gas removal device and technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107486000A true CN107486000A (en) | 2017-12-19 |
Family
ID=60653936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710974181.1A Pending CN107486000A (en) | 2017-10-19 | 2017-10-19 | A kind of dioxin in flue gas removal device and technique |
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| Country | Link |
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| CN (1) | CN107486000A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603484A (en) * | 2019-01-15 | 2019-04-12 | 上海第二工业大学 | A kind of advanced oxidation system handling organic exhaust gas and foul gas |
| CN114034538A (en) * | 2021-09-30 | 2022-02-11 | 利晟（杭州）科技有限公司 | Enrichment device for dioxin detection and use method |
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| JP2004209328A (en) * | 2002-12-27 | 2004-07-29 | Nippon Shokubai Co Ltd | Apparatus and method for cleaning harmful component-containing gas |
| CN103949153A (en) * | 2014-04-23 | 2014-07-30 | 林小晓 | Method and device for purifying flue gas by utilizing photochemical Fenton reaction |
| CN107243230A (en) * | 2017-07-21 | 2017-10-13 | 商志民 | A kind of processing unit of organic exhaust gas |
| CN207546183U (en) * | 2017-10-19 | 2018-06-29 | 广东佳德环保科技有限公司 | A kind of dioxin in flue gas removal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004209328A (en) * | 2002-12-27 | 2004-07-29 | Nippon Shokubai Co Ltd | Apparatus and method for cleaning harmful component-containing gas |
| CN103949153A (en) * | 2014-04-23 | 2014-07-30 | 林小晓 | Method and device for purifying flue gas by utilizing photochemical Fenton reaction |
| CN107243230A (en) * | 2017-07-21 | 2017-10-13 | 商志民 | A kind of processing unit of organic exhaust gas |
| CN207546183U (en) * | 2017-10-19 | 2018-06-29 | 广东佳德环保科技有限公司 | A kind of dioxin in flue gas removal device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109603484A (en) * | 2019-01-15 | 2019-04-12 | 上海第二工业大学 | A kind of advanced oxidation system handling organic exhaust gas and foul gas |
| CN114034538A (en) * | 2021-09-30 | 2022-02-11 | 利晟（杭州）科技有限公司 | Enrichment device for dioxin detection and use method |
| CN114034538B (en) * | 2021-09-30 | 2023-09-12 | 利晟（杭州）科技有限公司 | Enrichment device for dioxin detection and use method |
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