CN110508109A - Rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system and method - Google Patents
Rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system and method Download PDFInfo
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- 238000011282 treatment Methods 0.000 title claims abstract description 33
- 238000007233 catalytic pyrolysis Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003795 desorption Methods 0.000 claims abstract description 102
- 239000007789 gas Substances 0.000 claims abstract description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 41
- 239000002912 waste gas Substances 0.000 claims abstract description 24
- 238000001179 sorption measurement Methods 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000005336 cracking Methods 0.000 claims abstract description 20
- 239000002594 sorbent Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 18
- 239000003463 adsorbent Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000036470 plasma concentration Effects 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 210000002381 plasma Anatomy 0.000 description 56
- 239000012855 volatile organic compound Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000009975 flexible effect Effects 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010011906 Death Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002101 lytic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
-
- 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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
- B01D53/323—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 electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- 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
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system and methods, including active carbon alternating sorbent device, hot wind alternating desorption apparatus, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device, DBD plasma advanced treatment apparatus and water spray system；The present invention replaces desorption apparatus by active carbon alternating sorbent device, hot wind, is taken turns to operate, is realized low concentration (< 10mg/m all the way first by parallel connection3) exhaust gas absorption after direct emission, another way is desorbed another way adsorption module with centesimal hot gas flow, the exhaust gas for the higher concentration that the low concentration gas of Wind Volume becomes small air quantity handle using which, to substantially reduce plasma apparatus scale, reduces cost of investment and provide possibility.
Description
Technical field
The present invention relates to technical field of waste gas treatment, and in particular to a kind of rotary arc hot plasma catalytic pyrolysis high concentration
VOC exhaust treatment system and method.
Background technique
It is increasingly developed with human industry, more and more, pollution of the exhaust gas to atmospheric environment is used to VOCs
Come it is bigger, wherein mostly with large-wind-volume low-concentration (< 10mg/m3) discharge be characterized, VOCs exhaust gas is low due to difficult to degrade
Isothermal plasma is more and more applied in waste gas pollution control and treatment system as a kind of green exhaust gas treatment technology of high-energy, and
For DBD discharge low-temperature plasma due to electron energy height, scission of link ability is considered as a kind of most effective exhaust gas treatment technology by force.
But since DBD discharging low-temperature plasma device scalable technology difficulty is big, equipment cost is high, only locating
Manage common low concentration (< 1000mg/m3) exhaust gas has preferable effect, and burning is generallyd use at present for the exhaust gas of high concentration
Mode, most widely used at present is exactly the mode of RTO.But which starts overlong time, it has not been convenient to flexible operating, equipment
Maneuverability, processing is not thorough enough, and cost is also higher with energy consumption, needs centainly combustion-supporting for the exhaust gas of fluctuation of concentration, gives up
Gas degradation rate is not sufficiently stable.
Hot plasma electric discharge is currently to handle a kind of effective measures of high-concentration waste gas, but single reactor handles air quantity
Its application of finite limitation, etc..
How using low cost, the application range of raising plasma waste gas treatment equipment, at plasma technique
Managing large-wind-volume low-concentration exhaust gas is waste gas treatment process problem in the urgent need to address.
Summary of the invention
The object of the present invention is to provide a kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system with
Method.
To achieve the above object, present invention provide the technical scheme that
A kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system, including active carbon alternating sorbent
Device, hot wind replace desorption apparatus, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device, DBD plasma depth
Processing unit and water spray system；
The active carbon alternating sorbent device is made of two activated carbon adsorption devices in parallel；The entrance of adsorbent equipment a
Entered by branch air inlet pipe a, accesses active carbon case a later, check valve a, the active carbon case a are installed on the branch air inlet pipe a
Outlet meets branch exhaust pipe a；The entrance of adsorbent equipment b is entered by branch air inlet pipe b, accesses active carbon case b, the branch air inlet pipe later
Check valve b is installed, the outlet active carbon case b meets branch exhaust pipe b on b；The outlet of active carbon case a and active carbon case b with
Convergence tube connection, then convergence tube enters total air-introduced machine；
The hot wind alternating desorption apparatus is made of two thermal desorption devices in parallel；The outlet of heater is divided into two pipes
Road meets heating pipe a all the way, installs heating pipe a valve on the heating pipe a, the heating pipe a is divided into desorption pipeline
Active carbon case a is accessed after group a, the outlet of the active carbon case a meets pipeline group a after desorption, then connects desorption and converge pipeline a, institute
It states desorption and converges and desorption is installed on pipeline a converges pipeline a valve；Heater outlet another way connects heating pipe b, the heating
Heating pipe b valve is installed, the heating pipe b accesses active carbon case b, the activity after being divided into desorption pipeline group b on pipeline b
The outlet of charcoal case b meets pipeline group b after desorption, then connects desorption and converges pipeline b, the desorption, which converges, is equipped with desorption on pipeline b
Converge pipeline b valve, the desorption converges pipeline a and desorption converges pipeline b and access to be desorbed and always converges pipeline；
The entrance that blower is desorbed is desorption fan inleting pipe, and the front end that fan inleting pipe is desorbed is equipped with desorption blower air inlet
Tube valve, desorption fan inleting pipe middle part connect the desorption and always converge pipeline, and end connects desorption blower, the desorption fan outlet
Desorption fan outlet pipeline is connect, the outlet of the desorption fan outlet pipeline accesses rotary arc hot plasma high-concentration waste gas checking
Catalytic unit air inlet is solved, the outlet of rotary arc hot plasma high-concentration waste gas cracking and catalyzing device connects advanced treating tracheae,
The advanced treating tracheae is connect with DBD plasma device entrance, and the outlet of the DBD plasma device connects advanced treating
Exhaust pipe separates an advanced treating return pipe on the advanced treating exhaust pipe and connects total inlet pipe.
The present invention replaces desorption apparatus by active carbon alternating sorbent device, hot wind, is taken turns to operate by parallel connection, real all the way
Now first by low concentration (< 10mg/m3) exhaust gas absorption after direct emission, another way is with centesimal hot gas flow to another
Road adsorption module is desorbed, using which by the low concentration gas of Wind Volume become small air quantity higher concentration exhaust gas into
Row is handled, and to substantially reduce plasma apparatus scale, is reduced cost of investment and is provided possibility；
Using hot gas Detachment Activity charcoal, CO can be generated on a small quantity, provide combustion-supporting effect for plasma apparatus is objective below,
Active carbon can gradually reduce, and only need to supplement later, substantially inactive charcoal secondary pollution, reduce active carbon dangerous waste processing at
This；
Since gas flow significantly becomes smaller, facilitate the high-concentration waste after handling desorption using rotary arc hot plasma
Gas, high-efficient, required reactor quantity is few, at low cost.The plasma device facilitates used in parallel, the flexible property of switching on and shutting down
It is good；
Since air can also generate electric discharge, high-energy density with higher has concentration the exhaust gas of fluctuation, without
Combustion-supporting gas is assisted, exhaust gas decomposition rate is more stable；
The sliding electric arc hot plasma is since temperature is at 400 DEG C or so, higher than the initiation temperature of big multi-catalyst, this etc.
Gas ions act on catalyst, and catalyst can directly be made to reach normal job requirement, and the plasma-catalytic of realization acts on,
Exhaust gas decomposition rate, which is stablized, is higher than single catalyst or hot plasma cleavage rate.
Rotary arc hot plasma improves the time of plasma pyrolysis exhaust gas by rotation, and high-field electrode length can
It adjusts, adapts to various concentration gradient exhaust-gas treatments, application range is wider.
Hot plasma cracking is first passed through, in the splitting action for directly facilitate catalyst, greatly reduces catalyst
The possibility of poisoning, hot plasma itself also play certain cleaning action to catalyst.
The catalyst of supplement can be added in hot plasma reactor catalysis treated pipeline, enhance treatment effect, quilt
Treated, and gas becomes the exhaust gas of the small flow of low concentration, is most suitable for carrying out advanced treating using DBD, is residual more difficult to degrade
The processing of exhaust gas provides reliable supplement, high using DBD device efficiency compared to single, at low cost.
DBD plasma treated exhaust gas has a large amount of residual activity ions and ozone, and portion gas is flowed back and is located in advance
Managing original exhaust gas has certain pre-oxidation lytic effect, reduces pipeline switching frequency, also has degradation in adsorption process.
Active ion is finally led in water spray again, is dissolved in water, and spraying effect is enhanced.
Desorption entrance has a tonifying Qi valve, and desorption fan outlet has a concentration measurement and control and back-fire relief valve, for adjusting
The concentration of hot plasma air inlet body, avoids exploding, and improves safety.
Can also open when not handling exhaust gas can play cleaning action to reactor, can also open plasma
Body can be used to adjustment equipment, be used for clean catalysis agent.
Detailed description of the invention
Fig. 1 is that the rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system that the invention patent provides shows
It is intended to.
Fig. 2 is the structural schematic diagram of rotary arc hot plasma high-concentration waste gas cracking and catalyzing device.
In figure: 1 total inlet pipe, 2 air inlet pipe a, 3 check valve a, 4 active carbon case a, 5 exhaust valve a, the inspection of 6 concentration
Survey a, 7 exhaust pipe a, 8 air inlet pipe b, 9 check valve b, 10 active carbon case b, 11 exhaust valve b, 12 Concentration Testing b, 13
Branch exhaust pipe b, 14 convergence tubes, 15 total air-introduced machines, 16 exhaust pipes, 17 spray columns, 18 exhaust tubes, 19 heaters, 20 heating pipes
B, 21 heating pipe b valves, 22 are desorbed pipeline group b, pipeline group b after 23 desorptions, and 24 desorptions converge pipeline b, 25 desorption convergence tubes
Road b valve, 26 heating pipe a, 27 heating pipe a valves, 28 are desorbed pipeline group a, and pipeline group a after 29 desorptions, 30 desorptions converge
Pipeline a, 31 desorptions converge pipeline a valve, and 32 desorptions always converge pipeline, 33 desorption fan inleting pipes, 34 desorption fan inleting pipes
Valve, 35 desorption blowers, 36 desorption fan outlet pipelines, the control of 37 pressure gauges, 38 fire insulation valves, 39 supplement catalyst, 40 depth
Processing tracheae, 41DBD plasma device, 42 advanced treating exhaust pipes, 43 advanced treating return pipes, 44 reactor air inlet pipe,
45 shell of reactor, 46 interior high-voltage isulation sleeves, 47 catalyst filling tubes, 48 reactor outlet mesh enclosures, 49 high-voltage lines, 50 connect
Ground wire, 51 high voltage insulating columns, 52 high tension thread electrodes, 53 whirlwind module youngsters, 54 rotation arc plasmas, 55 catalyst, 56 rotations
Turn arc plasma power supply.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
A kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system, including active carbon alternating sorbent
Device, hot wind replace desorption apparatus, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device, DBD plasma depth
Processing unit and water spray system；
The active carbon alternating sorbent device is made of two activated carbon adsorption devices in parallel；The entrance of adsorbent equipment a
Entered by branch air inlet pipe a2, accesses active carbon case a4 later, check valve a3, the active carbon are installed on the branch air inlet pipe a
The outlet case a4 meets branch exhaust pipe a7, successively installs branch exhaust valve a5 and Concentration Testing a6 on the branch exhaust pipe a7；Absorption
The entrance of device b is entered by branch air inlet pipe b8, is accessed active carbon case b10 later, is equipped with check valve on the branch air inlet pipe b8
B9, the outlet active carbon case b10 meet branch exhaust pipe b13, successively install branch exhaust valve b11 on the branch exhaust pipe b13
With Concentration Testing b12；The outlet of active carbon case a4 and active carbon case b10 are connect with convergence tube 14, and then convergence tube enters total
Air-introduced machine 15；
The hot wind alternating desorption apparatus is made of two thermal desorption devices in parallel；The outlet of heater 19 is divided into two
Pipeline meets heating pipe a26 all the way, heating pipe a valve 27 is installed on the heating pipe a26, and the heating pipe a26 divides
At active carbon case a4 is accessed after desorption pipeline group a28, the outlet of the active carbon case a4 meets pipeline group a29 after desorption, then connects
Desorption converges pipeline a30, and the desorption, which converges, to be equipped with desorption and converge pipeline a valve 31 on pipeline a30；Heater outlet is another
Road meets heating pipe b20, installs heating pipe b valve 21 on the heating pipe b20, the heating pipe b20 is divided into desorption
Active carbon case b10 is accessed after pipeline group b22, the outlet of the active carbon case b10 meets pipeline group b23 after desorption, then connects desorption
Converge pipeline b24, the desorption, which converges, to be equipped with desorption and converge pipeline b valve 25 on pipeline b24, the desorption converges pipeline
A30 and desorption converge pipeline b24 access desorption always converge pipeline 32；
The entrance that blower 35 is desorbed is desorption fan inleting pipe 33, and the front end of desorption fan inleting pipe 33 is equipped with desorption wind
Machine air inlet pipe valve 34 is desorbed in the middle part of fan inleting pipe 33 and connects the desorption and always converge pipeline 32, and end, which connects, is desorbed blower 35, institute
It states the outlet of desorption blower 35 and connects desorption fan outlet pipeline 36, pressure gauge control is successively installed on the desorption fan outlet pipeline 36
System 37 and fire insulation valve 38, the outlet access rotary arc hot plasma high-concentration waste gas cracking of the desorption fan outlet pipeline 36
The outlet of catalytic unit air inlet 44, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device connects advanced treating tracheae
40, filling supplement catalyst 39 inside the advanced treating tracheae 40, the advanced treating tracheae 40 and DBD plasma device
The connection of 41 entrances, the outlet of the DBD plasma device 41 connects advanced treating exhaust pipe 42, the advanced treating exhaust pipe 42
On separate an advanced treating return pipe 43 and connect total inlet pipe 1；
Exhaust pipe 16 is accessed in 15 rear end of total air-introduced machine, and exhaust pipe 16 and 42 two-way of advanced treating exhaust pipe access spray
Tower 17 is drenched, the gas into spray column 17 is discharged after advanced treating by the exhaust tube 18 at top.
It is successively installed on the branch exhaust pipe a7 on branch exhaust valve a5 and Concentration Testing a6, the branch exhaust pipe b13
Branch exhaust valve b11 and Concentration Testing b12 is successively installed；Pressure gauge control is successively installed on the desorption fan outlet pipeline 36
System 37 and fire insulation valve 38；Filling supplement catalyst 39 inside the advanced treating tracheae 40.
Rotary arc hot plasma high-concentration waste gas cracking and catalyzing device is driven by rotary arc plasma electrical source 56, described
Rotary arc plasma electrical source 56 connects high tension thread electrode 52 by high-voltage line 49, and the high tension thread electrode 52 passes through screw thread
High voltage insulating column 51 is passed through between two parties and is used as high-voltage discharging electrode, and the high voltage insulating column 51 is threadedly secured to reactor between two parties
45 top of shell, 45 cylinder inboard wall of shell of reactor, which is screwed, high-voltage isulation sleeve 46 in cylinder, high pressure in the cylinder
46 inner wall of insulating sleeve is threadably secured whirlwind module 53 again, is equipped with inclined hole from top to bottom inside the whirlwind module 53 and is used for
Cyclone is formed, whirlwind column center passes through high tension thread electrode 52, and 45 top side of shell of reactor is inserted with reactor air inlet
Pipe 44,45 lower part of discharge envelope are connect by screw thread with catalyst filling tube 47, are placed and are urged inside catalyst filling tube 47
55 particle of agent, 47 lower part outlet of catalyst filling tube connect reactor outlet mesh enclosure 48, rotary arc heat by external screw thread
The outlet of plasma high-concentration waste gas cracking and catalyzing device connects advanced treating tracheae 40 again.
The reaction cavity of rotary arc hot plasma high-concentration waste gas cracking and catalyzing device is stainless steel material, outside reactor
Shell 45 is connect with the earth；The high voltage insulating column 51 uses polytetrafluoroethylene material, and thickness is not less than 5mm, high voltage insulating column 51
It is fixed on 45 top mesoporous of shell of reactor, is threadably secured, 51 upper and lower end face of high voltage insulating column protrudes from shell of reactor
Cylinder top plate at least 5mm, high-voltage isulation sleeve 46 uses polytetrafluoroethylene material in cylinder, and thickness is not less than 5mm, high in the cylinder
Have a screw thread inside and outside pressure insulating sleeve 46, external screw thread with shell of reactor cylinder inboard wall is concentric fixes, internal screw thread and whirlwind module
53 external screw threads are fixed, and the high voltage insulating column 51,53 centre bore screw thread of whirlwind module and high tension thread electrode 52 are concentric, isometrical,
High tension thread electrode 52 sequentially passes through high voltage insulating column 51 and whirlwind module 53 by screw thread from top to bottom, is suspended vacantly and is reacting
Device casing cylinder middle, the high tension thread electrode 52 is apart from shell of reactor 10~12mm of cylinder inboard wall, and material selection is not
Become rusty steel；52 outer surface of high tension thread electrode has tip screw thread, is conducive to electric arc generation and Stable sliding.
The 53 height 5mm of whirlwind module, circumference from top to bottom are equipped with several about 30 degree of round taper holes and are conducive to shape
At whirlwind；44 pressure of reactor air inlet pipe is 4~6 atmospheric pressure, gas flow about 10m3/h；The shell of reactor 45
Cylinder lower part is connect by external screw thread with catalyst filling tube 47, and 47 material of catalyst filling tube is stainless steel, the catalyst
55 filler of catalyst is placed with inside filling tube 47；The 55 filler bottom of catalyst has reactor outlet mesh enclosure 48, is stainless
Steel material is fixed by the external screw thread of catalyst filling tube 47, and the reactor outlet mesh enclosure 48 finally gos deep into advanced treating again
In tracheae 40.
A kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust gas treating method, low concentration Wind Volume exhaust gas are first
It is introduced into activated carbon adsorption device a to be handled, tail gas up to standard is directly discharged in spray column by blower after processing, is sprayed
Direct emission after processing switches pipeline by adsorbent equipment b and carries out adsorption treatment after adsorbent equipment a adsorption saturation；Hot wind is de- simultaneously
Adsorption device starts that adsorbent equipment a is desorbed, and it is high that the small air quantity high concentration tail gas after desorption enters rotary arc hot plasma
Concentration waste gas cracking and catalyzing device is handled, and it is deep that the small air quantity low concentration tail gas become after processing enters back into DBD plasma
Spend advanced treating in processing unit, qualified discharge after finally being handled again by spray column；After the completion of adsorbent equipment a desorption, pass through pipe
Road switching, starts to carry out adsorbent equipment b again small air quantity thermal desorption, then by discharging after plasma and spray column processing, inhales
Adsorption device a starts to adsorb the low concentration gas of Wind Volume, such alternating sorbent de-adsorption cycle work.
Embodiment one
Only tonifying Qi valve is first opened, then all plasma apparatus are opened, and generates active particle airflow reflux to useless
Feed channel carries out pre- pyrolysis oxidization, is dissolved into water and realizes high efficiency spray.
It opens absorption beginning adsorption treatment exhaust gas all the way and drains into spray discharge, first via pipe outlet concentration is waited soon to reach
When to initial concentration, i.e. pipeline valve after the exhaust-gas treatment of the first via is closed in adsorption saturation, and heater closes aeration valve,
The desorption channel valve for opening the first via carries out thermal desorption and plasma-catalytic cracks treatment process, opens simultaneously the second tunnel
Exhaust steam passage valve starts to continue to adsorb exhaust gas to be processed；Before second tunnel adsorption saturation, first via desorption is to lower than initial concentration
This section of blank time afterwards adjusts aeration valve and persistently carries out plasma catalyst automatic cleaning action；After second tunnel adsorption saturation, close
Aeration valve is closed, the second road exhaust-gas treatment late gate is closed, opens the desorption channel valve on the second tunnel, carries out thermal desorption and plasma
Body catalytic pyrolysis treatment process, at the same restart open the first via exhaust steam passage valve restart to continue to adsorb it is to be processed
Exhaust gas；So circulation.
Embodiment two
For being particularly easy to the light concentration gas of oxidative degradation, all plasma apparatus are opened, generate active particle
Airflow reflux to exhaust piping carries out pre- pyrolysis oxidization, is dissolved into water and realizes high efficiency spray, opens absorption all the way and starts to adsorb
Processing exhaust gas drains into spray discharge, and the degradation of exhaust gas can be realized in the sustained response in absorption, the process, without switching.
Embodiment three
No exhaust gas end-of-life stage can carry out, and desorption maintenance, all pipeline valves are closed after absorption, open all desorption pipelines
Valve, then all plasma apparatus are opened, residual exhaust gases are handled, active particle air-flow is generated and is redissolved in realization height in water
Spray penetration is imitated to administer.
Example IV
Similar embodiment three opens simultaneously the absorption of two-way exhaust gas for being particularly easy to the light concentration gas of oxidative degradation, etc.
Gas ions particle pre-oxidizes cracking process, can handle two times of exhaust gas air quantity.
Embodiment five
Adsorption/desorption in parallel can be more than two-way, successively work, and all plasma processing apparatus can freely series connection in parallel
Combination, etc..
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, any ripe
Professional and technical personnel is known, without departing from the scope of the present invention, according to the technical essence of the invention, to the above reality
Any simple modifications, equivalent substitutions and improvements etc. made by example are applied, it is fallen within the scope of protection of the technical scheme of the present invention
It is interior.
Claims (7)
1. a kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system, it is characterised in that: including active carbon
Alternating sorbent device, hot wind alternating desorption apparatus, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device, DBD etc. from
Daughter advanced treatment apparatus and water spray system；
The active carbon alternating sorbent device is made of two activated carbon adsorption devices in parallel；The entrance of adsorbent equipment a is by propping up
Air inlet pipe a (2) enters, and accesses active carbon case a (4) later, is equipped with check valve a (3), the work on the branch air inlet pipe a (2)
Property charcoal case a (4) export meet branch exhaust pipe a (7)；The entrance of adsorbent equipment b is entered by branch air inlet pipe b (8), accesses active carbon later
Case b (10) is equipped with check valve b (9) on the branch air inlet pipe b (8), and active carbon case b (10) outlet meets branch exhaust pipe b
(13)；The outlet of active carbon case a (4) and active carbon case b (10) are connect with convergence tube (14), and then convergence tube enters total air inducing
Machine (15)；
The hot wind alternating desorption apparatus is made of two thermal desorption devices in parallel；The outlet of heater (19) is divided into two pipes
Road connects heating pipe a (26) all the way, installs heating pipe a valve (27) on the heating pipe a (26), the heating pipe a
(26) it is divided into desorption pipeline group a (28) and accesses active carbon case a (4) afterwards, the outlet of the active carbon case a (4) connects pipeline after desorption
Group a (29), then connects desorption and converges pipeline a (30), and the desorption, which converges, to be equipped with desorption and converge pipeline a valve on pipeline a (30)
Door (31)；Heater outlet another way connects heating pipe b (20), and heating pipe b valve is installed on the heating pipe b (20)
(21), the heating pipe b (20) is divided into desorption pipeline group b (22) access active carbon case b (10) afterwards, the active carbon case b
(10) outlet meets pipeline group b (23) after desorption, then connects desorption and converges pipeline b (24), the desorption converges on pipeline b (24)
Desorption is installed and converges pipeline b valve (25), the desorption converges pipeline a (30) and desorption converges pipeline b (24) and accesses and takes off
It is attached always to converge pipeline (32)；
The entrance that blower (35) are desorbed is desorption fan inleting pipe (33), and the front end of desorption fan inleting pipe (33) is equipped with desorption
Fan inleting pipe valve (34), desorption fan inleting pipe (33) in the middle part of connect it is described desorption always converge pipeline (32), be desorbed blower into
Tracheae (33) end connects desorption blower (35), and desorption blower (35) outlet connects desorption fan outlet pipeline (36), described de-
The outlet of attached fan outlet pipeline (36) accesses rotary arc hot plasma high-concentration waste gas cracking and catalyzing device air inlet (44),
The outlet of rotary arc hot plasma high-concentration waste gas cracking and catalyzing device connects advanced treating tracheae (40), the depth qi-regulating
Pipe (40) is connect with DBD plasma device (41) entrance, and the outlet of the DBD plasma device (41) meets advanced treating row
Tracheae (42) separates an advanced treating return pipe (43) on the advanced treating exhaust pipe (42) and connects total inlet pipe (1).
2. rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system according to claim 1, feature
Be: total air-introduced machine (15) rear end access exhaust pipe (16), exhaust pipe (16) and advanced treating exhaust pipe (42) two-way are equal
It accesses spray column (17), the top of spray column (17) has the exhaust tube (18) of gas after emission treatment.
3. rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system according to claim 1, feature
It is: branch exhaust valve a (5) and Concentration Testing a (6), the branch exhaust pipe b is successively installed on the branch exhaust pipe a (7)
(13) branch exhaust valve b (11) and Concentration Testing b (12) are successively installed on；On the desorption fan outlet pipeline (36) successively
Pressure gauge control (37) and fire insulation valve (38) are installed；Filling supplement catalyst (39) inside the advanced treating tracheae (40).
4. rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system according to claim 1, feature
Be: rotary arc hot plasma high-concentration waste gas cracking and catalyzing device is driven by rotary arc plasma electrical source (56), described
Rotary arc plasma electrical source (56) passes through high-voltage line (49) connection high tension thread electrode (52), the high tension thread electrode (52)
High voltage insulating column (51) are passed through between two parties by screw thread as high-voltage discharging electrode, the high voltage insulating column (51) passes through screw thread between two parties
It is fixed at the top of shell of reactor (45), shell of reactor (45) cylinder inboard wall is screwed and has high-voltage isulation sleeve in cylinder
(46), high-voltage isulation sleeve (46) inner wall is threadably secured whirlwind module (53) again in the cylinder, the whirlwind module (53)
Inside is equipped with inclined hole from top to bottom and is used to form cyclone, and whirlwind column center passes through high tension thread electrode (52), outside the reactor
Shell (45) top side is inserted with reactor air inlet pipe (44), and discharge envelope (45) lower part passes through screw thread and catalyst filling tube
(47) it connects, catalyst (55) particle, catalyst filling tube (47) lower part outlet is placed inside catalyst filling tube (47)
Reactor outlet mesh enclosure (48) are connected by external screw thread, rotary arc hot plasma high-concentration waste gas cracking and catalyzing device exports again
Connect advanced treating tracheae (40).
5. rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system according to claim 4, feature
Be: the reaction cavity of rotary arc hot plasma high-concentration waste gas cracking and catalyzing device is stainless steel material, shell of reactor
(45) it is connect with the earth；The high voltage insulating column (51) uses polytetrafluoroethylene material, and thickness is not less than 5mm, high voltage insulating column
(51) it is fixed on mesoporous at the top of shell of reactor (45), is threadably secured, high voltage insulating column (51) upper and lower end face protrudes from instead
At least 5mm at the top of device casing cylinder is answered, high-voltage isulation sleeve (46) uses polytetrafluoroethylene material in cylinder, and thickness is not less than 5mm,
High-voltage isulation sleeve (46) is inside and outside in the cylinder a screw thread, external screw thread with shell of reactor cylinder inboard wall is concentric fixes, interior spiral shell
Line is fixed with whirlwind module (53) external screw thread, the high voltage insulating column (51), whirlwind module (53) centre bore screw thread and high pressure spiral shell
Line electrode (52) is concentric, isometrical, high tension thread electrode (52) from top to bottom by screw thread sequentially pass through high voltage insulating column (51) with
Whirlwind module (53) is suspended vacantly in shell of reactor cylinder middle, and the high tension thread electrode (52) is outside reactor
Shell 10~12mm of cylinder inboard wall, material selection stainless steel；High tension thread electrode (52) outer surface has tip screw thread, favorably
In electric arc generation and Stable sliding.
6. rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system according to claim 4, feature
Be: whirlwind module (53) the height 5mm, circumference from top to bottom are equipped with several about 30 degree of round taper holes and advantageously form
Whirlwind；Reactor air inlet pipe (44) pressure is 4~6 atmospheric pressure, gas flow about 10m3/h；The shell of reactor
(45) cylinder lower part is connect by external screw thread with catalyst filling tube (47), and catalyst filling tube (47) material is stainless steel, institute
It states and is placed with catalyst (55) filler inside catalyst filling tube (47)；Catalyst (55) the filler bottom has reactor outlet
Mesh enclosure (48) is stainless steel material, is fixed by the external screw thread of catalyst filling tube (47), the reactor outlet mesh enclosure (48)
Finally go deep into advanced treating tracheae (40) again.
7. a kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust gas treating method, it is characterised in that: wanted using right
A kind of rotary arc hot plasma catalytic pyrolysis high concentration VOC exhaust treatment system described in asking 1, low concentration Wind Volume exhaust gas are first
It is introduced into activated carbon adsorption device a to be handled, tail gas up to standard is directly discharged in spray column by blower after processing, is sprayed
Direct emission after processing switches pipeline by adsorbent equipment b and carries out adsorption treatment after adsorbent equipment a adsorption saturation；Hot wind is de- simultaneously
Adsorption device starts that adsorbent equipment a is desorbed, and it is high that the small air quantity high concentration tail gas after desorption enters rotary arc hot plasma
Concentration waste gas cracking and catalyzing device is handled, and it is deep that the small air quantity low concentration tail gas become after processing enters back into DBD plasma
Spend advanced treating in processing unit, qualified discharge after finally being handled again by spray column；After the completion of adsorbent equipment a desorption, pass through pipe
Road switching, starts to carry out adsorbent equipment b again small air quantity thermal desorption, then by discharging after plasma and spray column processing, inhales
Adsorption device a starts to adsorb the low concentration gas of Wind Volume, such alternating sorbent de-adsorption cycle work.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495115A (en) * | 2020-06-03 | 2020-08-07 | 江苏先竞等离子体技术研究院有限公司 | Method for heating organic waste gas by utilizing thermal plasma |
| CN113521955A (en) * | 2021-06-17 | 2021-10-22 | 复旦大学 | Emergency exhaust gas emission treatment system |
| CN115253591A (en) * | 2022-07-22 | 2022-11-01 | 嘉兴学院 | Catering oil smoke treatment system |
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| WO2016204522A1 (en) * | 2015-06-15 | 2016-12-22 | 한국기계연구원 | Plasma-catalyst type scrubber |
| CN210645802U (en) * | 2019-08-14 | 2020-06-02 | 南京苏曼等离子科技有限公司 | High-concentration VOC tail gas treatment system for catalytic cracking of rotating arc thermal plasma |
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| WO2016204522A1 (en) * | 2015-06-15 | 2016-12-22 | 한국기계연구원 | Plasma-catalyst type scrubber |
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| CN111495115A (en) * | 2020-06-03 | 2020-08-07 | 江苏先竞等离子体技术研究院有限公司 | Method for heating organic waste gas by utilizing thermal plasma |
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