CN108479341A - A kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas - Google Patents
A kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas Download PDFInfo
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- CN108479341A CN108479341A CN201810569662.9A CN201810569662A CN108479341A CN 108479341 A CN108479341 A CN 108479341A CN 201810569662 A CN201810569662 A CN 201810569662A CN 108479341 A CN108479341 A CN 108479341A
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- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000003546 flue gas Substances 0.000 title claims abstract description 47
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
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- -1 cerium metal oxide Chemical class 0.000 claims description 6
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- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000009298 carbon filtering Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 22
- 238000000746 purification Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 14
- 238000011068 loading method Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000002245 particle Substances 0.000 description 12
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- 229910052742 iron Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 150000003254 radicals Chemical class 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000012855 volatile organic compound Substances 0.000 description 6
- 239000013543 active substance Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
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- 239000005416 organic matter Substances 0.000 description 4
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- 239000003795 chemical substances by application Substances 0.000 description 3
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- 241000251468 Actinopterygii Species 0.000 description 1
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention is the device that a kind of plasma body cooperative iron-carbon micro-electrolysis handles organic flue gas, plasma generator including interconnection and absorption tower, the plasma generator is connect with smoke inlet, it is connect with exhanst gas outlet at the top of the absorption tower, iron carbon filler layer, spraying layer, demister, active carbon filter are disposed with inside the absorption tower from bottom to top, the absorption tower lower sides are connect with slurry circulating pump, and the slurry circulating pump is connect with the spraying layer.Using plasma collaboration iron-carbon micro-electrolysis of the present invention purifies organic flue gas, and pulsed high voltage generator, iron carbon filler loading is adjustable, and technique is applied widely, and adaptability for working condition is strong；And tail gas carries out after-treatment after being purified to corona discharge pulse plasma body cooperative iron-carbon micro-electrolysis by spraying layer and active carbon filter, equipment investment and operating cost are low, and purification efficiency is up to 95% or more, and non-secondary pollution.
Description
Technical field
The present invention relates to organic flue gas Treatment process fields, and in particular to a kind of plasma body cooperative iron-carbon micro-electrolysis processing
The device of organic flue gas.
Background technology
Organic flue gas (VOCs) Treatment process can be divided into two classes：When recovery technology, by changing certain technical process
The physical conditions such as temperature, pressure make VOCs enrichment and separations, are preferentially recycled, for taking into one for no utility value
Harmless treatment is walked, mainly there is condensation method, absorption method, absorption process and membrane separation process etc.；Second is that the technology of destruction, passes through chemistry or life
Change reaction, with heat, light, catalyst and microorganism by organic matter be transformed into the nonhazardous such as carbon dioxide and water or low toxicity do harm to it is small
Molecular compound, VOCs processing mainly have combustion method, lower temperature plasma technology, Photocatalyst and biology
Technology etc..Wherein, high energy electron caused by low temperature plasma, free radical isoreactivity particle can act on having in flue gas
Machine pollutant makes contaminant molecule decompose within the extremely short time, and it is dirty to reach degradation that subsequent various reactions occur
The purpose for contaminating object, it is efficient to handle organic flue gas, has obtained a lot of research and application.
CN107441885A discloses a kind of device and method of the organic flue gas of plasma body cooperative catalytic treatment, including sequentially
Absorption tower, plasma reactor and the catalytic reactor of connection；Wherein, controlled threeway is provided at the air inlet of absorption tower
Valve；The controlled triple valve makes smoke inlet that the bypass on smoke inlet and absorption tower is connected to or made with absorption tower air inlet respectively
Connection；Controlled triple valve is provided at the air inlet of plasma reactor；The controlled triple valve makes absorption tower respectively
Gas outlet is connected to plasma reactor air inlet or makes the bypass of absorption tower gas outlet and plasma reactor；Also
Including a gas analysis instrument, smoke inlet is provided with test point, the gas analysis instrument is real-time by test point
Flue gas is detected, and exports control signal according to testing result to each controlled triple valve, to control its switching.The technical solution is main
Solves the problems such as organic by-products are easily deposited on the electrode surface of plasma reactor and influence discharge performance, for organic
The processing of flue gas is not efficient enough.
CN107042039A discloses a kind of dielectric barrier discharge low-temperature plasma concerted catalysis and handles organic flue gas
Device and processing method, including agent set and low temperature plasma generating means；The agent set is from the bottom to top successively
It is divided into filtering bed, reaction chamber and adsoption catalysis bed, the low temperature plasma generating means to be located at outside reaction chamber, with institute
State reaction chamber seamless connection.The technical solution mainly detaches low temperature plasma generating means with flue gas, solves and avoids directly
The problems such as contact causes the corrosion of electric discharge device, however, the processing of organic flue gas is only uniquely relied on low temperature plasma
Oxidation and catalysis oxidation are effectively combined, it is difficult to handle the organic flue gas combination of industrial complexity, also lack after absorbing into one
Step processing, treatment effect are also not prominent enough.
To sum up, the prior art still lack it is a kind of using plasma body cooperative catalysis, can efficient process it is a variety of in the case of
Organic flue gas processing device.
Invention content
Purpose of the present invention is in view of the defects existing in the prior art, provide kind of a corona discharge pulse plasma body cooperative iron
Carbon micro-electrolysis purifies organic flue gas, and by spraying layer and active carbon filter to corona discharge pulse plasma body cooperative iron carbon
Tail gas carries out after-treatment after light electrolysis purification, and treatment effeciency is high.Technical solution of the present invention is as follows.
A kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas, includes the plasma hair of interconnection
Raw device and absorption tower, the plasma generator are provided with smoke inlet, are provided with exhanst gas outlet at the top of the absorption tower, institute
It states and is disposed with iron carbon filler layer, spraying layer, demister, active carbon filter, the absorption inside absorption tower from bottom to top
Tower lower sides are connect with slurry circulating pump, and the slurry circulating pump is connect with the spraying layer.
Pending organic flue gas enters plasma generator by smoke inlet, enters after corona treatment
Absorption tower is passed through the processing such as iron carbon filler layer, spraying layer, demister, active carbon filter inside absorption tower, has been handled successively
Flue gas be discharged by exhanst gas outlet, slurry circulating pump 10 from bottom of tower conveying slurries sprayed to spraying layer 6.
Plasma generator generates a large amount of high energy electrons, positive and negative particle, excited state particle by corona discharge pulse,
With and the extremely strong O of oxidisability3With living radical (OH, O etc.), after organic flue gas is passed through plasma generator, these
Active particle is combined with the organic pollutant molecule collision in flue gas, on the one hand can make some organic pollutants molecular scission,
Directly it is decomposed into CO2、H20 equal innocuous gas molecule, makes flue gas obtain preliminary purification；Electronics in another aspect plasma
Organic pollutant molecule surface is adhered to be allowed to charged, is conducive to it and enters after iron-carbon micro-electrolysis reaction tower by iron carbon filler
Absorption is decomposed.The present invention selects corona discharge, and corona discharge can work under normal pressure, and device design is simple, electrode and power supply at
This relative moderate；And the impulse electric corona that superiority is had more compared with DC corona is selected, it is narrow by the high-pressure stage of pulsed high voltage generator
Pulse power supply mode, obtain nonequilibrium plasma, due to its it is charged it is efficient, Implantation Energy is big, can be formed and compare direct current
It swoons more, stronger high energy electron, so that the quantity of free radical and active particle and energy efficiency is had raising by a relatively large margin, and not
Easily play electric spark.
The difference in Electrode Potential of iron and carbon can form countless small primary batteries in the solution in iron carbon filler layer, in light electrolysis mistake
High active substance is generated in journey.When the charged organic pollution of dispersion in the solution is filled out by the iron carbon being immersed in tower in solution
It when the bed of material, can be adsorbed on filler, and series of oxidation reduction reaction occurs with these high active substances, be broken down into CO2、H2O
Deng to realize purification purpose.Therefore, the present invention is acted synergistically by plasma and iron-carbon micro-electrolysis, can high efficiency processing
Some Organic Pollutants, and pulsed high voltage generator, iron carbon filler loading is adjustable, technique is applied widely, and adaptability for working condition is strong.
It is provided with one or two layers spraying layer above iron carbon filler layer, several nozzles are provided on the spray tube of spraying layer,
Slurry circulating pump is sprayed from bottom of tower conveying slurries to spraying layer, and the pH of sprayed slurry is 2-6, allows still undegradable organic dirt
Dye object comes back to lower layer's iron carbon filler layer purification, improves whole purification efficiency.Demister is provided with above spraying layer, favorably
Water mist in tail gas adheres to form bulky grain droplet drippage, to reduce the water mist content in tail gas.Setting above demister
Active carbon filter, the tail gas after dehumidifying enter in active carbon filter, are further purified to tail gas, to ensure row up to standard
It puts.Finally, it is discharged in air outside by the tail gas of adsorption cleaning.Therefore, the present invention passes through spraying layer, demister and activated carbon mistake
Filter carries out after-treatment to flue gas, is further processed first, untreated organic matter can be allowed to return to bottom of tower, second is that energy
Enough advanced treating residual organic contaminants, can purifying smoke to the maximum extent, treatment effeciency is high, and environment protecting is good.
Preferably, being provided with microbubble generator, the plasma below the absorb the bottom of the tower, iron carbon filler layer
Booster fan is provided between generator and absorption tower, the booster fan is connect with the microbubble generator.Increasing outside tower
The flue gas handled through plasma generator is delivered to microbubble generator by pressure fan, and the organic pollution in flue gas is through microvesicle
Generating means becomes microvesicle, evenly spreads in the solution in tower, makes reacting more fully, more for organic pollution and iron carbon filler
Efficiently.Microbubble generator brings flue gas larger resistance, it is therefore desirable to which booster fan pressurizes, and microvesicle is allowed to generate more
It is easy and abundant.
Preferably, the microbubble generator includes several gas distribution pipes be responsible for and be connected to supervisor, the gas distribution
Pipe is evenly arranged along supervisor's length direction, and the tube wall of the gas distribution pipe is provided with several micropores, the aperture of the micropore
It is 0.1-2000 μm.The microbubble generator can generate microvesicle in all directions of bottom of tower, and flue gas can be allowed more uniform
It is distributed in the solution in tower.
Preferably, the plasma generator includes shell and housing inlet port, the housing outlets at shell both ends is arranged,
Inside the plasma generator even spiracular plate, electric field region, insulator and plant-grid connection are disposed with along smoke movement direction
Device, the electric field region include several tubular dielectric materials, the moon positioned at tubular dielectric material center being evenly arranged
Pole, the anode being tightly placed in outside tubular dielectric material, the cathode are electrically connected with the plant-grid connection device, and the anode connects
Ground.
Preferably, the tubular dielectric material can be one kind in quartz glass, ceramics, the cathode is prickle electricity
Pole, the arista electrode adjacent spacing are 10-50mm, and electrode length 15-30mm, the arista electrode is column prickle, three
Angular prickle, angle steel prickle, waveform prickle, tubulose prickle, band steel prickle, angle steel prickle, zigzag prickle, strip prickle and fish
It is one or more in bone prickle.
Preferably, the plant-grid connection device is electrically connected with pulsed high voltage generator；The pulsed high voltage generator is direct current
Base voltage source, it is 40-80kV that base, which presses voltage range, and preferably 60KV, base current voltage range is 200-2000mA, pulse voltage width
Degree is 60-120KV, preferably 80kV, pulse width 70-100uS, pulse recurrence frequency 0-200Hz.Pass through high voltage pulse
The high pressure ultra-narrow pulse power supply mode of power supply, obtain nonequilibrium plasma, due to its it is charged it is efficient, Implantation Energy is big, energy
It is enough to form high energy electrons more than DC corona, stronger, so that the quantity of free radical and active particle and energy efficiency is had larger
The raising of amplitude, and it has been not easy electric spark.
Preferably, further including reclamation set, the reclamation set is connect with the slurry circulating pump.The present invention handles cigarette
In gas when organic matter, the Fe of generation during iron-carbon micro-electrolysis2+The solid suspensions such as ion flocculation, can gradually be accumulated in absorption tower
Bottom section, it is preferred that can inclined tube (plate) sedimentation basin, the settlers such as vertical sedimentation basin be set in bottom of tower, solid is hanged
Float preferably precipitates and bottom of tower, is then periodically pumped into solid suspension in reclamation set by slurry circulating pump, consolidate
Liquid detaches, slurries be purified after be back in tower again, recycle water resource, reduce discharge of wastewater, and suspended matter into
The processing of one step, resource circulation utilization.
Preferably, the iron carbon filler layer is regular iron carbon filler, the regular iron carbon filler proportion is 800-
1200kg/m3, for porosity not less than 65%, specific surface area is not less than 1.2m2/ g, physical strength are not less than 1000kg/cm2, iron carbon
Mass ratio is 4-6:1.Regularization filler be by the standardized iron of grain size, carbon, metal or non-metallic catalyst, activator etc.,
It is uniformly sintered and is formed after mixing and compression moulding by a certain percentage, spherical shape, ellipse, cylinder etc. can be selected in iron carbon filler
Shape.The present invention selects regular iron carbon filler, and without assembling, loading is few, and is avoided that conventional iron carbon filler is answered in industry
The passivation, hardened and replace the problems such as difficult in the presence of provides the current density of bigger and better for iron-carbon micro-electrolysis reaction
Micro-electrolysis reaction effect, reaction rate is fast, and purification efficiency is high, and longtime running is stablized effective.
Preferably, load has catalyst, the catalyst and the iron carbon content on the regular iron carbon filler
Weight ratio is 2-8：92-98, the catalyst are one or more in titanium, manganese, cobalt, cerium metal oxide catalyst.
Preferably, the demister is one or more combinations in baffling vane type, tubular type, screen type, it is described
Polypropylene or FRP can be selected in the material of demister.FRP, Fiber Reinforced Polymer/Plastic, are fiber reinforcements
Composite material is the high-performance proximate matter material formed after being mixed according to a certain percentage with basis material (resin) by fibrous material.Matter
Light and hard, non-conductive, high mechanical strength recycles less, corrosion-resistant.
Beneficial effects of the present invention have：
(1) corona discharge pulse plasma body cooperative iron-carbon micro-electrolysis is used to purify organic flue gas, produced by plasma
Active particle, iron-carbon micro-electrolysis generate high active substance can handle Some Organic Pollutants, and pulsed high voltage generator, iron
Carbon filler loading is adjustable, and technique is applied widely, and adaptability for working condition is strong；
(2) plasma device selects pulsed high voltage generator, passes through the high pressure ultra-narrow pulse supplier of electricity of pulsed high voltage generator
Formula obtains nonequilibrium plasma, and charged efficient, Implantation Energy is big, can greatly improve generated free radical and activity
The quantity and energy efficiency of particle；
(3) rationally organic flue gas is pre-processed using plasma device, while so that flue gas is obtained preliminary purification,
Keep organic pollutant molecule charged, it is promoted to adsorb, decompose on iron carbon filler；
(4) organic pollution in flue gas is dispersed in tower in solution by microvesicle reaction unit, makes itself and iron
The reaction of carbon filler is more abundant, more efficient；
(5) regular iron carbon filler is used, without assembling, loading is few, and service life is long, regular without needing to change, only needing
Supplement runs and easy to maintain and at low cost, is avoided that conventional iron carbon filler is passivated in the presence of commercial Application, is hardened and stifled
The problems such as plug, provides the current density of bigger and better micro-electrolysis reaction effect for iron-carbon micro-electrolysis reaction, and reaction rate is fast,
Purification efficiency is high；
(6) after being purified to corona discharge pulse plasma body cooperative iron-carbon micro-electrolysis by spraying layer and active carbon filter
Tail gas carries out two degree of processing of checking on, and can effectively prevent gas discharge not up to standard, it is ensured that meet increasingly stringent discharge standard；Pass through
Circulation solution treatment for reuse device periodically carries out cleansing and recycling to circulation solution, recycles water resource, effectively reduces waste water row
It puts；
(7) present invention process flow is simple, applied widely, and equipment investment and operating cost are low, and purification efficiency is up to 95%
More than, and non-secondary pollution.
Description of the drawings
Fig. 1 present apparatus Structure and Process schematic diagrams；
Fig. 2 microbubble generator structural representations；
Fig. 3 plasma generator structure schematic diagrames.
Reference numeral：Smoke inlet 1, plasma generator 2, booster fan 3, microbubble generator 4, supervisor 41, gas distribution
Pipe 42, micropore 43, microvesicle 44, iron carbon filler layer 5, spraying layer 6, demister 7, active carbon filter 8, exhanst gas outlet 9, slurries follow
Ring pump 10, reclamation set 11,
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
A kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas, as shown in Figure 1, including interconnection
Plasma generator 2 and absorption tower, the plasma generator 2 are provided with smoke inlet 1, are arranged at the top of the absorption tower
There is exhanst gas outlet 9, is disposed with iron carbon filler layer 5, spraying layer 6, demister 7, activity inside the absorption tower from bottom to top
Carbon filter 8, the absorption tower lower sides are connect with slurry circulating pump 10, the slurry circulating pump 10 and the spraying layer 6
Connection.Pending organic flue gas enters plasma generator 2 by smoke inlet 1, enters after corona treatment
The processing such as iron carbon filler layer 5, spraying layer 6, demister 7, active carbon filter 8, place are passed through in absorption tower successively inside absorption tower
The flue gas managed is discharged by exhanst gas outlet 9, and slurry circulating pump 10 is sprayed from bottom of tower conveying slurries to spraying layer 6.
Plasma generator 2 generates a large amount of high energy electrons, positive and negative particle, excited state particle by corona discharge pulse,
With and the extremely strong O of oxidisability3With living radical (OH, O etc.), after organic flue gas is passed through plasma generator 2, these
Active particle is combined with the organic pollutant molecule collision in flue gas, on the one hand can make some organic pollutants molecular scission,
Directly it is decomposed into CO2、H20 equal innocuous gas molecule, makes flue gas obtain preliminary purification；Electronics in another aspect plasma
Organic pollutant molecule surface is adhered to be allowed to charged, is conducive to it and enters after iron-carbon micro-electrolysis reaction tower by iron carbon filler
Absorption is decomposed.The difference in Electrode Potential of iron and carbon can form countless small primary batteries in the solution in iron carbon filler layer 5, in micro- electricity
High active substance is generated in solution preocess.When dispersion charged organic pollution in the solution passes through the iron that is immersed in tower in solution
It when carbon filler layer 5, can be adsorbed on filler, and series of oxidation reduction reaction occurs with these high active substances, be broken down into
CO2、H2O etc., to realize purification purpose.Therefore, the present invention is acted synergistically by plasma and iron-carbon micro-electrolysis, can be efficient
Rate handles Some Organic Pollutants, and pulsed high voltage generator, iron carbon filler loading is adjustable, and technique is applied widely, and operating mode is suitable
Ying Xingqiang.
3 top of iron carbon filler layer is provided with one or two layers spraying layer 6, and several sprays are provided on the spray tube of spraying layer 6
Mouth, slurry circulating pump 10 are sprayed from bottom of tower conveying slurries to spraying layer 6, and the pH of sprayed slurry is 2-6, is allowed still undegradable
Organic pollution comes back to the purification of lower layer's iron carbon filler layer 5, improves whole purification efficiency.The top of spraying layer 6, which is provided with, removes
Day with fog 7 is conducive to the water mist in tail gas and adheres to form bulky grain droplet drippage, to reduce the water mist content in tail gas.Demisting
7 top of device is provided with active carbon filter 8, and the tail gas after dehumidifying enters in active carbon filter 8, further net to tail gas
Change, to ensure qualified discharge.Finally, it is discharged in air outside by the tail gas of adsorption cleaning.Therefore, the present invention by spraying layer,
Demister and active carbon filter carry out after-treatment to flue gas, when can allow it is untreated have an opportunity to return bottom of tower obtain into
The processing of one step, second is that can advanced treating residual organic contaminants, can purifying smoke to the maximum extent, treatment effeciency is high, ring
It is good to protect effect.
As preferred embodiment, the absorb the bottom of the tower, 5 lower section of iron carbon filler layer are provided with microbubble generator 4, institute
It states and is provided with booster fan 3 between plasma generator 2 and absorption tower, the booster fan 3 and the microbubble generator 4
Connection.The flue gas handled through plasma generator 2 is delivered to microbubble generator 4 by booster fan 3 outside tower, in flue gas
Organic pollution becomes microvesicle through microbubble generator 5, evenly spreads in the solution in tower, and organic pollution is made to be filled out with iron carbon
The reaction of material is more abundant, more efficient.Microbubble generator 4 brings flue gas larger resistance, it is therefore desirable to which booster fan 3 adds
Pressure allows what microvesicle generated to be more prone to and fully.
As preferred embodiment, the microbubble generator 4 includes several cloth be responsible for 41 and be connected to supervisor 41
Tracheae 42, the gas distribution pipe 42 are evenly arranged along 41 length directions of the supervisor, and the tube wall of the gas distribution pipe 42 is provided with several
The aperture of a micropore 43, the micropore 43 is 0.1-2000 μm.The microbubble generator 4 can be produced in all directions of bottom of tower
Raw microvesicle 44 can allow in the solution that flue gas more evenly spreads in tower.
As preferred embodiment, the plasma generator 2 includes that shell 21 and the shell being arranged at shell both ends enter
Mouthfuls 22, housing outlets 23 are disposed with even spiracular plate 24, electric field inside the plasma generator 2 along smoke movement direction
Area, insulator 28 and plant-grid connection device 29, the electric field region include several tubular dielectric materials 25 being evenly arranged, are located at
The cathode 27 of 25 center of tubular dielectric material, the anode 26 being tightly placed in outside tubular dielectric material 25, the cathode 27 with
The plant-grid connection device 29 is electrically connected, and the anode 26 is grounded.
As preferred embodiment, the tubular dielectric material 25 can be one kind in quartz glass, ceramics, described the moon
Pole 27 is arista electrode, and the arista electrode adjacent spacing is 10-50mm, electrode length 15-30mm, and the arista electrode is
Column prickle, triangle prickle, angle steel prickle, waveform prickle, tubulose prickle, band steel prickle, angle steel prickle, zigzag prickle,
It is one or more in strip prickle and fish-bone prickle.
As preferred embodiment, the plant-grid connection device 29 is electrically connected with pulsed high voltage generator 210；The pulse is high
Voltage source 210 is DC base voltage power supply, and it is 40-80kV that base, which presses voltage range, and preferably 60KV, base current voltage range is 200-
2000mA, pulse voltage amplitude 60-120KV, preferably 80kV, pulse width 70-100uS, pulse recurrence frequency 0-
200Hz.By the high pressure ultra-narrow pulse power supply mode of pulsed high voltage generator, nonequilibrium plasma is obtained, due to its charged effect
Rate is high, Implantation Energy is big, can form more than DC corona, stronger high energy electron, make the number of free radical and active particle
Amount and energy efficiency have raising by a relatively large margin, and have been not easy electric spark.
Further include reclamation set 11 as preferred embodiment, the reclamation set 11 connects with the slurry circulating pump 10
It connects.When the present invention handles organic matter in flue gas, the Fe of generation during iron-carbon micro-electrolysis2+The solid suspensions such as ion flocculation, meeting
Gradually it is extruded in the bottom section on absorption tower, it is preferable that it is heavy can inclined tube (plate) sedimentation basin, vertical sedimentation basin etc. to be set in bottom of tower
Shallow lake device, solid suspension is preferably precipitated and bottom of tower, is then periodically pumped into solid suspension by slurry circulating pump 10
In reclamation set 11, be separated by solid-liquid separation, slurries be purified after be back in tower again, recycle water resource, reduce
Discharge of wastewater, and suspended matter is further processed, resource circulation utilization.
As preferred embodiment, the iron carbon filler layer 3 is regular iron carbon filler, the regular iron carbon filler ratio
Weight is 800-1200kg/m3, and porosity is not less than 65%, and specific surface area is not less than 1.2m2/ g, physical strength are not less than
1000kg/cm2, iron carbon mass ratio is 4-6:1.Regularization filler is by the standardized iron of grain size, carbon, metal or nonmetallic to urge
Agent, activator etc. are uniformly sintered and are formed after mixing and compression moulding by a certain percentage, the optional spherical shape of iron carbon filler,
The shapes such as ellipse, cylinder.The present invention selects regular iron carbon filler, and without assembling, loading is few, and is avoided that conventional iron
The problems such as carbon filler is passivated in the presence of commercial Application, hardened and replacement is difficult, the electricity of bigger is provided for iron-carbon micro-electrolysis reaction
Current density and better micro-electrolysis reaction effect, reaction rate is fast, and purification efficiency is high, and longtime running is stablized effective.
Being loaded as preferred embodiment, on the regular iron carbon filler has catalyst, the catalyst and the iron
The weight ratio of carbon content is 2-8：92-98, the catalyst are titanium, manganese, cobalt, one kind in cerium metal oxide catalyst or more
Kind.
As preferred embodiment, the demister 7 is one or more in baffling vane type, tubular type, screen type
Polypropylene or FRP can be selected in the material of combination, the demister 7.FRP is fibre reinforced composites, be by fibrous material with
The high-performance proximate matter material that basis material (resin) is formed after mixing according to a certain percentage.It is light and hard, non-conductive, mechanical strength
Height recycles less, corrosion-resistant.
Application Example：
Using the organic flue gas of system actual treatment industry of the present invention, to the clean-up effect such as following table institute of organic pollution
Show.
| Performance indicator | Application Example 1 | Application Example 2 | Application Example 3 |
| Exhaust gas volumn/(Nm3/h) | 15000 | 30000 | 50000 |
| Entrance VOCs concentration/(mg/Nm3) | 1510 | 1420 | 1228 |
| Export VOCs concentration/(mg/Nm3) | 35.2 | 43.6 | 56.0 |
| Purification efficiency/(%) | 97.67 | 96.93 | 95.44 |
It follows that the present invention can be more than 95% to the efficient advanced treatings of VOC, purification efficiency, have extraordinary net
Change effect.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific implementation modes 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 being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (10)
1. a kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas, which is characterized in that including interconnection
Plasma generator and absorption tower, the plasma generator are provided with smoke inlet, are provided at the top of the absorption tower
Exhanst gas outlet is disposed with iron carbon filler layer, spraying layer, demister, activated carbon filtering inside the absorption tower from bottom to top
Device, the absorption tower lower sides are connect with slurry circulating pump, and the slurry circulating pump is connect with the spraying layer.
2. a kind of device as described in claim 1, which is characterized in that setting below the absorb the bottom of the tower, iron carbon filler layer
There is microbubble generator, booster fan, the booster fan and institute are provided between the plasma generator and absorption tower
State microbubble generator connection.
3. a kind of device as claimed in claim 2, which is characterized in that the microbubble generator includes supervisor and connects with supervisor
Several logical gas distribution pipes, the gas distribution pipe are evenly arranged along supervisor's length direction, and the tube wall of the gas distribution pipe is provided with
Several micropores.
4. a kind of device as claimed in claim 2 or claim 3, which is characterized in that the plasma generator includes shell and setting
Housing inlet port, housing outlets at shell both ends are disposed with inside the plasma generator even along smoke movement direction
Spiracular plate, electric field region, insulator and plant-grid connection device, the electric field region include several tubular medium materials being evenly arranged
Material, the cathode positioned at tubular dielectric material center, the anode that is tightly placed in outside tubular dielectric material, the cathode with it is described
Plant-grid connection device is electrically connected, the plus earth.
5. a kind of device as claimed in claim 4, which is characterized in that the tubular dielectric material is in quartz glass, ceramics
One kind, the cathode be arista electrode, the arista electrode adjacent spacing be 10-50mm, electrode length 15-30mm；Institute
State arista electrode be column prickle, triangle prickle, angle steel prickle, waveform prickle, tubulose prickle, band steel prickle, angle steel prickle,
It is one or more in zigzag prickle, strip prickle and fish-bone prickle.
6. a kind of device as claimed in claim 4, which is characterized in that the plant-grid connection device is electrically connected with pulsed high voltage generator
It connects；The pulsed high voltage generator is DC base voltage power supply, and it is 40-80kV that base, which presses voltage range, and base current voltage range is 200-
2000mA, pulse voltage amplitude 60-120KV, pulse width 70-100uS, pulse recurrence frequency 0-200Hz.
7. a kind of device as claimed in claim 4, which is characterized in that further include reclamation set, the reclamation set with it is described
Slurry circulating pump connects.
8. a kind of device as described in claims 1 or 2 or 3 or 7, which is characterized in that the iron carbon filler layer is regular iron
Carbon filler, the regular iron carbon filler proportion are 800-1200kg/m3, not less than 65%, specific surface area is not less than porosity
1.2m2/ g, physical strength are not less than 1000kg/cm2, iron carbon mass ratio is 4-6:1.
9. a kind of device as claimed in claim 8, which is characterized in that load has catalyst on the regular iron carbon filler,
The weight ratio of the catalyst and the iron carbon content is 2-8：92-98, the catalyst are titanium, manganese, cobalt, cerium metal oxide
It is one or more in catalyst.
10. a kind of device as described in claims 1 or 2 or 3 or 7, which is characterized in that the demister be baffling vane type,
The material of one or more combinations in tubular type, screen type, the demister is polypropylene or FRP.
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| CN201810569662.9A CN108479341B (en) | 2018-06-05 | 2018-06-05 | Device for treating organic smoke by plasma and iron-carbon micro-electrolysis |
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| CN109157952A (en) * | 2018-10-22 | 2019-01-08 | 广西博世科环保科技股份有限公司 | Integrated kitchen fumes purification device |
| CN112915739A (en) * | 2021-01-25 | 2021-06-08 | 中山大学 | Heterogeneous catalytic oxidation processing system of organic waste gas and foul smell waste gas |
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| CN108479341B (en) | 2024-07-02 |
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