CN104437075B - Utilize the method for microwave heatable catalytic pyrolysis processing VOC - Google Patents
Utilize the method for microwave heatable catalytic pyrolysis processing VOC Download PDFInfo
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Abstract
The invention discloses a kind of method using microwave heatable catalytic pyrolysis processing VOC, it comprises the following steps：1）Using VOCs steams as simulated exhaust, gas is dried by calcium chloride or calcium oxide, for soda acid waste gas first using wet type or Dry absorption washing and dust removal process；2）Waste gas after above-mentioned processing is passed through microwave reactor and carries out catalytic pyrolysis reaction, microwave special-purpose catalyst is housed in microwave reactor, catalyst is mainly based on calcium ferrite；3）Gas on-line monitoring is carried out in the inlet and outlet of microwave reactor, the treatment effect, gas flow, gas residence time of reactor are detected, ensure gas qualified discharge.The method for the microwave flash catalysis pyrolysis that the present invention uses, has preferable treatment effect to the VOCs gases of high-concentration and low-concentration, shortens the time, reduce reaction temperature, improve resolution ratio.Therefore this technique has the characteristics of purification efficiency is high, energy consumption is low, non-secondary pollution.
Description
Technical field
The present invention relates to one kind to utilize microwave heatable catalytic pyrolysis decomposition VOCs（VOC）Method, category
In microwave chemical catalysis and field of Environment Protection.
Background technology
VOCs is dirty essentially from industrial waste gas, vehicle exhaust, photochemistry caused by fuel combustion and communications and transportation in outdoor
Dye etc.；And indoors then essentially from the smog of combustion product, smoking, heating and the cookings such as coal-fired and natural gas etc., building and
The discharge of ornament materials, furniture, household electrical appliance, cleaning agent and human body in itself etc..Indoors in decoration process, VOCs essentially from
Paint, coating and adhesive.VOCs contents are in 0.4--1.0mg/m in general paint3.Because VOCs has a strong volatility, one
As in the case of, in 10 hours after paint application, it is volatilizable go out 90%, and the VOCs in solvent then in air drying process is painted only
The 25% of total volume.
Volatility VOCs harm is it is obvious that when VOC concentration exceedes finite concentration in room, and people feel in a short time
To headache, Nausea and vomiting, limbs fatigue；It can twitch, go into a coma when serious, failure of memory.The VOCs injuries liver of people, kidney,
Brain and nervous system.Occupying indoor VOCs pollution has caused various countries to pay attention to.Influences of the volatility VOCs to health be mainly
Eyes and respiratory tract are stimulated, makes allergic, makes one to produce headache, pharyngalgia with weak, wherein further comprises many carcinogens.
What country newly promulgated《Civil buildings indoor environmental pollution controls specification》In, VOCs content, has become and comments in room air
A whether qualified important indicator of valency room IAQ.Built in VOCs contents specified in this standard for I class is civilian
Build engineering：0.5 mg/ m3, II class civil building engineering：0.6mg/ m3。
At present, the Treatment process of common VOC can be divided mainly into two major classes:One kind is so-called non-demolition
Property technology（Absorption method）, such method includes active carbon adsorption（The technology can be found in number of patent application
200710028462.4 patent disclosed in correlation technique）, condensation method（The technology can be found in number of patent application
201120148948.3）Patent disclosed in technology, solution absorption method（The technology can be found in number of patent application
201110341724.9 patent disclosed in technology）Etc. common technology, typically by change pressure in certain technical process,
The physical conditions such as temperature make VOC concentration and separation;Another kind of is so-called destructive technology（Edman degradation Edman）, main bag
Include direct pyrolysis method（The technology can be found in the technology disclosed in the document that number of patent application is 200810039311.3）Urged with light
Change method（The technology can be found in the technology disclosed in the patent that number of patent application is 201210112303.3）Etc. common technology,
VOCs is set to be converted into CO by chemical technology2, water and the less inorganic matter of nontoxic or toxicity.Various method processing volatility are organic
The process conditions of gas and require different application scope and advantage and disadvantage.For example, condensation process has to the volatility of low concentration
There is the shortcomings that investment is big, operating cost is high in machine gas treatment, be typically only applicable to high concentration, the organic gas of the volatility of small air quantity
Body is administered;Absorption method has good treatment effect for the VOC of low concentration, but needs continually to absorption
Agent is regenerated;Direct pyrolysis method is adapted to handle highly concentrated VOC, because its running temperature generally reaches 800-1200
DEG C when, not only process energy consumption cost is higher；For light-catalysed method because treating capacity is small, processing speed is relatively low to be constantly in laboratory
Conceptual phase.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of purification efficiency is high, energy consumption is low, non-secondary pollution utilization is micro-
The method that Wave heating is catalyzed pyrolysis processing VOC.
In order to solve the above technical problems, the present invention adopts the technical scheme that：One kind is using at microwave heatable catalytic pyrolysis
The method for managing VOC, its key technology are：It comprises the following steps：
1）Using VOCs steams as simulated exhaust, gas is dried by calcium chloride or calcium oxide, first for soda acid waste gas
Using wet type or Dry absorption washing and dust removal process；
2）Waste gas after above-mentioned processing is passed through microwave reactor and carries out catalytic pyrolysis reaction, and microwave is housed in microwave reactor
Special-purpose catalyst, catalyst is mainly based on calcium ferrite；
During microwave radiation, the temperature of microwave special-purpose catalyst is controlled by controlling microwave power, its power model
It is trapped among 0-400KW；
The residence time of gas in the reactor is controlled by coutroi velocity, VOCs residence time is 1-3S；
3）Gas on-line monitoring, treatment effect, gas stream to reactor are carried out in the inlet and outlet of microwave reactor
Amount, gas residence time are detected, and ensure gas qualified discharge.
The microwave reactor includes at least one set of magnetron and waveguide that cylinder combines and connection is combined with cylinder
Combination；
The cylinder combination includes inner cylinder and is secured to the outer barrel of connection, and the inner cylinder is wave transparent earthenware, described
Outer barrel is the stainless steel cylinder that inwall polishes smooth；Connected after magnetron and the waveguide connection by waveguide with outer barrel；Institute
State in inner cylinder and be provided with packing layer, the alumina silicate heat-preservation cotton for being used for ensureing cavity temperature is provided between the inner cylinder and outer barrel；It is described
The upper and lower ends of outer barrel are equipped with the aluminium film for preventing microwave leakage.
The inner cylinder top is fixedly connected by compact heap and positioning seat with the cover assembly of outer barrel, the outer barrel and inner cylinder
The sealed circle in bottom junction and bulkhead seal, the bottom of the inner cylinder is provided with lower cover component and the gear for support packing layer
Plate, multiple circular holes are offered on the baffle plate；The bottom of the baffle plate is provided with lower shell ring, and the lower shell ring bottom is provided with flange.
Outer barrel and the waveguide junction is by can prevent dust in cavity from entering the mica sheet of magnetron and closing, magnetic control
Pipe uses fine copper or silver-plated waveguide from 20cm, the waveguide is at least with a distance from microwave cavity edge.
The microwave reactor uses 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, the microwave reactor
Using single tube or multitube combination.
The step 2）In catalyst making step it is as follows：
（1）100g calcium oxide is dissolved in 500ml mass fractions 5-30% ferric chloride solution, turned with 100-300r/min
Fast uniform stirring, air is blown into 100-500ml/min flow and is aerated, while simultaneously stablizing solution is adjusted with NaOH solution
PH to 8-10, disappeared to jelly and solution is in muddy, terminate stirring；
（2）By step（1）Gained mud is with silicon carbide powder according to mass ratio 5:1 is well mixed；
（3）Take step（2）Products obtained therefrom, using belt filter press filter-press dehydration, obtain filter cake；
（4）By step（3）Gained filter cake is granulated, and 12-14h is toasted in 80-120 DEG C of baking oven, obtain catalyst half into
Product；
（5）To step（4）The catalyst semi-finished product of gained, conventional high temperature Muffle furnace is put under N2 gas conditions by raw material
Being warming up to stove needs temperature, control 900-1500 DEG C of temperature, heat 4-6h, after cool to room temperature with the furnace, produce catalyst.
The step（2）Described in silicon carbide powder particle diameter be 300 mesh more than.
The step（5）Described in N2 to be passed through flow be 60-300ml/min.
The principle of the present invention is as follows：
Microwave energy is directly translated into its interior energy, because of difference by microwave heating mainly using the absorbing property for heating material
The absorbing property of material is different, and then microwave heating is played a part of selectively being heated.Understand according to previous studies, molecule
With polarity chron, its absorbing property is preferable, and its reason is due to that the structure of polar molecule causes its positive-negative polarity separation molecule two
End, form even electricity on microcosmic away from, and this even electricity away from formation have motion beneficial to molecule in microwave field.In microwave field
It is interior, have even electricity away from molecule as the change of alternating electric field arranges being constantly occurring " orientation " and " relaxation ", and due to dividing
The interaction of electric field force, produces mutually exclusive or sucking action between sub polarity itself, and molecule is because dynamic under repulsion or attraction
It can increase and produce a large amount of frictions, and then interior energy is changed into by kinetic energy, realize the heating of material.Exactly utilize molecule in microwave field
Above characteristic, we using microwave catalysis accelerate VOCs gas molecules decomposition and heatable catalyst heating, so as to reach dodge
Speed heat solution, improve the effect of VOCs clearances.
During beginning, unsaturated microwave special-purpose catalyst can adsorb VOCs, but with the rapid rise of temperature, VOCs is in microwave
Desorption is decomposed on special-purpose catalyst adsorption potential, when microwave special-purpose catalyst temperature reaches the critical-temperature of VOCs pyrolysis, is started
Catalysis pyrolysis, when the absorption of microwave special-purpose catalyst and desorption VOCs speed reach balance in processing procedure, system can be stablized
VOCs clearance after detection catalysis pyrolysis VOCs, equilibration time is 5-8 min according to measuring.
It is using beneficial effect caused by above-mentioned technical proposal：
1st, the microwave radiation stage provides substantial amounts of energy for VOCs gas molecules, destroys its molecular bond energy enough and reaches catalysis
The effect of decomposition；Microwave special-purpose catalyst wave-sucking performance is strong and can locally produce temperature limit, reaches catalysis pyrolysis VOCs's
Purpose；
2nd, microwave special-purpose catalyst has absorption property, and enrichment work can be played for the VOC of low concentration
With by adjusting absorption/desorption equilibrium of the temperature control microwave special-purpose catalyst post to VOCs；
3rd, the method for the microwave flash catalysis pyrolysis that the present invention uses, has preferable place to the VOCs gases of high-concentration and low-concentration
Manage effect.It is pyrolyzed compared to regular oxidation, hence it is evident that shorten the time, reduce reaction temperature, improve resolution ratio.Therefore this technique
With the characteristics of purification efficiency is high, energy consumption is low, non-secondary pollution.
4th, this microwave catalysis reactor overall structure is fairly simple, and its treatment effect is preferable, efficiency is higher.
Brief description of the drawings
Fig. 1 is the process chart of microwave flash catalytic treatment VOC；
Fig. 2 is the schematic diagram of microwave reactor of the present invention；
Fig. 3 is the schematic diagram of positioning seat；
Fig. 4 is positioning seat schematic top plan view；
Fig. 5 is the schematic diagram of lower cover component；
Fig. 6 is the schematic diagram of baffle plate；
Fig. 7 is the position enlarged diagram of A portions circular hole on baffle plate；
Fig. 8 is the enlarged diagram in B portions in Fig. 2；
Fig. 9 is the enlarged diagram in C portions in Fig. 2；
Wherein, 7- cylinders combine, 8- magnetrons, 9- waveguides, 10- lower cover components, 11- O-rings, 12- dividing plates, 13-
Screw, 14- packing layers, 15- aluminium films, 16- alumina silicate heat-preservation cottons, 17- inner cylinders, 18- compact heaps, 19- positioning seats, 20- fix spiral shell
Bolt, 21- fixing nuts, 22- cover assemblies, 23- baffle plates, the upper shell rings of 24-, 25- terminal pads, 26- supporting plates, shell ring under 27-,
28- flanges, 29- sealing plates, 30- outer barrels.
Embodiment
The present invention will be described in detail with specific embodiment below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1, step of the present invention is as follows：
1.1 using VOCs steams as simulated exhaust, and gas first passes through pretreating device, and the pretreating device is：Pass through chlorination
Calcium or calcium oxide are dried, and in actual environment, wet type or Dry absorption washing and dust removal process are carried out for soda acid waste gas；Institute
Wet type or Dry absorption wash mill or cyclone dust collectors or sack cleaner can be used by stating pretreating device, wherein wet type or
Dry absorption wash mill is used for deacidifying, and cyclone dust collectors or sack cleaner are used for dedusting.Its according to the characteristics of organic exhaust gas,
Acid alkaline gas and dust etc. are got rid of, prevent the damage to equipment.
Waste gas after 1.2 processing is passed through microwave reactor by air pump suction and carries out catalytic pyrolysis reaction, is equipped with reactor
Microwave special-purpose catalyst；
1.3 during microwave radiation, and the temperature of microwave special-purpose catalyst is relevant with microwave power, by controlling microwave work(
Rate controls the temperature of microwave catalyst；Its power bracket is in 150-3000W；Waste gas after processing, can by microwave reactor
To control the residence time of gas in the reactor by coutroi velocity, general VOCs residence time is 1-3S.
1.4 are sampled by inlet and outlet of the On-Line Monitor Device of Gas in microwave reactor, to the place of reactor
Reason effect, gas stop flow, the residence time is detected, and ensure gas qualified discharge.
During beginning, unsaturated microwave special-purpose catalyst can adsorb VOCs, but with the rapid rise of temperature, VOCs is in microwave
Desorption is decomposed on special-purpose catalyst adsorption potential, when microwave special-purpose catalyst temperature reaches the critical-temperature of VOCs pyrolysis, is started
Catalysis pyrolysis, when the absorption of microwave special-purpose catalyst and desorption VOCs speed reach balance in processing procedure, system can be stablized
VOCs clearance after detection catalysis pyrolysis VOCs, equilibration time is 5-8 min according to measuring.The measure of catalyst temperature
It is that thermocouple and infrared radiation thermometer progress thermometric is respectively adopted in microwave reactor import, outlet, reaction center point.
Referring to accompanying drawing 2-9, microwave reactor of the present invention includes cylinder combination 7 and 7 connections is combined with cylinder extremely
Few one group of magnetron 8 and waveguide 9 combine；
The cylinder combination 7 includes inner cylinder 17 and is secured to the outer barrel 30 of connection, and inner cylinder 17 and outer barrel 30 are coaxially set
Put, the inner cylinder 17 is wave transparent earthenware, and the outer barrel 30 is the stainless steel cylinder that inwall polishes smooth；The He of magnetron 8
Waveguide 9 connects, and is then connected by waveguide 9 with outer barrel 30；Be provided with packing layer 14 in the inner cylinder 17, the inner cylinder 17 and outside
The alumina silicate insulation cotton material for being used to ensure cavity temperature is provided between cylinder 30, the material can use alumina silicate heat-preservation cotton 16；Institute
The upper/lower terminal for stating outer barrel 30 is equipped with the aluminium film 15 for the outsourcing for preventing microwave leakage.
Referring to 2~accompanying drawing of accompanying drawing 9, the top of inner cylinder 17 passes through compact heap 18 and the cover assembly of positioning seat 19 and outer barrel
22 are fixedly connected, and the sealed circle 11 in bottom junction and dividing plate 12 of the outer barrel 30 and inner cylinder 17 are tightly connected, the inner cylinder
17 bottom is provided with lower cover component 10 and the baffle plate 23 for support packing layer, and multiple circular holes are offered on the baffle plate 23；It is described
Lower cover component 10 includes sealing plate 29 and the lower shell ring 27 located at the bottom of the baffle plate 23, and the lower bottom of shell ring 27 is provided with flange
28, the top of baffle plate 23 is connected with sealing plate 29 by supporting plate 26.The positioning seat 19 includes upper shell ring 24 and located at upper
The terminal pad 25 of the lower outside of shell ring 24.
The outer barrel 30 and the junction of waveguide 9 by can prevent dust in cavity from entering the mica sheet of magnetron 8 and closing,
Magnetron 8 is from microwave cavity（The cavity that i.e. outer barrel 30 and inner cylinder 17 are formed）The distance at edge is at least 20cm, because cavity meeting
Heated up as experiment is carried out, keep certain distance, avoid high temperature can be with the use of stabilized magnetron.The waveguide is using pure
Copper or silver-plated waveguide（Or it is excitation cavity）.
The microwave reactor uses 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, the microwave reactor
Using single tube or multitube combination, catalysis material of energizing is added in the inner cylinder 17.Common single magnetic control tube power is
0.5-1.5KW is due to by power limit, therefore single tube is generally used for the small-power instrument such as household microwave oven, microwave dissolver；
Multitube is used for industrial HIGH-POWERED MICROWAVES stove.Multimode during use（Single magnetron is single mode, and multiple magnetrons are multimode）Microwave
The strong ripple material of inhaling of inside reactor addition realizes the quick catalysis decomposition to organic volatile as material of energizing.
On-Line Monitor Device of Gas described above is volatile organic matter on-line computing model, and it uses TVOCs to monitor on-line
Equipment, volatile organic matter on-line computing model can use the TVOC gas detectors of Qingdao Loobo Hongye Environmental Protection Technology Co., Ltd.
（Digital display remote control type）Deng product.VOCs the or TVOCs on-line monitoring equipments monitoring range is in 0-106ppm。
Strong suction ripple material in the present invention is as energize material and this microwave catalyst, and the implementation of its preparation method is for example
Under：
Using ferric trichloride and calcium oxide as raw material, two kinds of materials are crushed and smashed, configure ferric trichloride mass concentration
For 25% solution, 100g calcium oxide is dissolved in liquor ferri trichloridi described in 500mL, there are a large amount of dark brown jellies in solution,
Air is blown into 300mL/min flow to be aerated, with agitator with 200r/min rotating speed uniform stirrings, use NaOH with air pump
Simultaneously stablizing solution pH is 10 for solution regulation, and solution becomes muddy and terminates to stir.
The silicon carbide powder of gained mud and 300 mesh is according to mass ratio 5:1 is well mixed, and with filter press press filtration, filter cake exists
120 DEG C of oven for drying 12h.In the case where being passed through flow 300ml/min condition of nitrogen gas, temperature is 900 DEG C and is calcined 6 hours, is passed through nitrogen
It is to prevent catalyst from, with oxygen contact, product after roasting is crossed into 16-20 mesh sieve, obtaining particle diameter is in roasting process
0.9mm microwave special-purpose catalyst.Belt filter press of the present invention selects Dong Beite, RBYL-500 belt filter presses；Often
Rule high temperature Muffle furnace selects Luoyang state torch, the box high temperature Muffle furnaces of GWL-1600XB.
Above-mentioned method for preparing catalyst uses high temperature solid-state method, selects transiens oxides diferri trioxide to be passed through with calcium oxide
Cross and fully mix and be calcined, form perocskite type oxide CaFeO3, there is the superior function of ABO3 type compounds, be calcined and formed
Calcium ferrite and carborundum all there is high-k, absorbing property is good in volatile organic matter degradation process, to reaction point
Son has greater catalytic efficiency.
Catalyst preparation is simple, and raw material is easy to get, preparation process can it is larger with synthesised polycrystalline or crystal grain, agglutinating property is preferable
Solid material, while it is calcined the calcium ferrite of formation and carborundum all has a high-k, absorbing property is good；Urged using the present invention
Agent carries out volatile organic matter microwave degradation, and heating is rapid, high catalytic efficiency, and degradation reaction effect is good.The type material is made
It is high for catalysis material stability, and have than traditional precious metal material the performance for the poisoning for preferably resisting catalyst.Hot steady
There is certain superiority in terms of qualitative, chemical stability and structural stability, show higher catalytic activity.
Verify that this method can produce good effect really below by several specific embodiments.
Embodiment 1
The content of acetone reaches 4000-8000mg/ m in the waste gas of Hebei pharmacy corporation discharge3.We are molten using acetone
Liquid heating volatilization, by controlling the ratio of air and acetone, simulation VOC concentration is 5000 mg/ m3, control
Microwave power is in 150W, gas flow rate 200ml/min, addition catalyst.After processing, the clearance of acetone is 93.3% after measured,
Outlet has reached discharging standards.
Embodiment 2
Heated and volatilized using acetone soln, by controlling the ratio of air and acetone, simulation acetone exhaust gas concentration is 8000
mg/ m3, control microwave power is in 750W, gas flow rate 100ml/min, addition catalyst.After processing, the clearance of acetone is
96.5%, outlet has reached discharging standards.
Embodiment 3
Heated and volatilized using xylene solution, by controlling the mass ratio of air and dimethylbenzene, it is dense to simulate xylene waste gas
Spend for 14000 mg/ m3, control microwave power is in 750W, gas flow rate 800ml/min, addition catalyst.After processing, acetone
Clearance be 94.7%, outlet has reached discharging standards.
Embodiment 4
Heated and volatilized using ethyl acetate solution, by controlling the mass ratio of air and ethyl acetate, simulate ethyl acetate
Exhaust gas concentration is 7000 mg/ m3, control microwave power is in 750W, gas flow rate 100ml/min, addition catalyst.After processing,
The clearance of acetone is 99.8%, and outlet has reached discharging standards.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
- A kind of 1. method using microwave heatable catalytic pyrolysis processing VOC, it is characterised in that：It includes following Step：1）Using VOCs steams as simulated exhaust, gas is dried by drier calcium chloride or calcium oxide, for soda acid waste gas First using wet type or Dry absorption washing and dust removal process；2）Waste gas after above-mentioned processing is passed through microwave reactor and carries out catalytic pyrolysis reaction, and microwave catalysis is housed in microwave reactor Agent, catalyst is mainly based on calcium ferrite；During microwave radiation, the temperature of microwave special-purpose catalyst is controlled by controlling microwave power, its power bracket exists 0-400KW；The residence time of gas in the reactor is controlled by coutroi velocity, VOCs residence time is 1-3S；3）Gas on-line monitoring is carried out in the inlet and outlet of microwave reactor, to the treatment effect, gas flow, gas of reactor The body residence time is detected, and ensures gas qualified discharge；The step 2）In catalyst making step it is as follows：（1）：100g calcium oxide is dissolved in 500ml mass fractions 5-30% ferric chloride solution, it is equal with 100-300r/min rotating speeds Even stirring, air is blown into 100-500ml/min flow and is aerated, at the same with NaOH solution regulation and stablizing solution pH to 8-10, disappeared to jelly and solution is in muddy, terminate stirring；（2）：By above-mentioned steps（1）Gained mud is with silicon carbide powder according to mass ratio 5:1 is well mixed；（3）：Take above-mentioned steps（2）Products obtained therefrom, using belt filter press filter-press dehydration, obtain filter cake；（4）：By above-mentioned steps（3）Gained filter cake is granulated, and 12-14h is toasted in 80-120 DEG C of baking oven, obtain catalyst half into Product；（5）：To above-mentioned steps（4）The catalyst semi-finished product of gained, are passed through N2Raw material is put into conventional high temperature Muffle under gas condition Stove heats up with stove, controls 900-1500 DEG C of temperature, heats 4-6h, after with conventional high temperature Muffle furnace be cooled to room temperature, produce catalysis Agent.
- 2. the method according to claim 1 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：Step 2）Described in microwave reactor include cylinder combination（7）And combined with cylinder（7）At least one set of magnetic control of connection Pipe（8）And waveguide（9）Combination；The cylinder combination（7）Including inner cylinder（17）And it is secured to the outer barrel of connection（30）, the inner cylinder（17）For wave transparent Earthenware, the outer barrel（30）The stainless steel cylinder polished smooth for inwall；The magnetron（8）And waveguide（9）After connection By waveguide（9）With outer barrel（30）Connection；The inner cylinder（17）It is interior to be provided with packing layer（14）, the inner cylinder（17）And outer barrel（30） Between be provided with and be used to ensure the alumina silicate heat-preservation cotton of cavity temperature（16）；The outer barrel（30）Upper and lower ends be equipped with prevent it is micro- The aluminium film of ripple leakage（15）.
- 3. the method according to claim 2 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：The inner cylinder（17）Top passes through compact heap（18）And positioning seat（19）With the cover assembly of outer barrel（22）It is fixedly connected, The outer barrel（30）With inner cylinder（17）The sealed circle in bottom junction（11）And dividing plate（12）Sealing, the inner cylinder（17）Bottom Portion is provided with lower cover component（10）With the baffle plate for support packing layer（23）, the baffle plate（23）On offer multiple circular holes；It is described Baffle plate（23）Bottom be provided with lower shell ring（27）, the lower shell ring（27）Bottom is provided with flange（28）.
- 4. the method according to claim 3 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：The outer barrel（30）And waveguide（9）Junction is by can prevent that dust enters magnetron in cavity（8）Mica sheet envelope Close, magnetron（8）From 20cm is at least with a distance from microwave cavity edge, the waveguide uses fine copper or silver-plated waveguide.
- 5. the method according to claim 4 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：The microwave reactor uses 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, the microwave reactor（5） Using single tube or multitube combination.
- 6. the method according to claim 1 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：Catalyst making step（2）Described in silicon carbide powder particle diameter be 300 mesh more than.
- 7. the method according to claim 1 using microwave heatable catalytic pyrolysis processing VOC, its feature It is：Catalyst making step（5）Described in N2It is 60-300ml/min to be passed through flow.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410535951.9A CN104437075B (en) | 2014-10-13 | 2014-10-13 | Utilize the method for microwave heatable catalytic pyrolysis processing VOC |
| RU2017115761A RU2659271C1 (en) | 2014-10-13 | 2014-12-05 | Device for rapid processing of volatile organic exhaust gas and method for treating volatile organic gas |
| PCT/CN2014/093085 WO2016058251A1 (en) | 2014-10-13 | 2014-12-05 | Apparatus for flash treatment of volatile organic waste gas and method for treating volatile organic gas |
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| CN201410535951.9A CN104437075B (en) | 2014-10-13 | 2014-10-13 | Utilize the method for microwave heatable catalytic pyrolysis processing VOC |
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| CN109925875A (en) * | 2019-04-01 | 2019-06-25 | 萍乡市华星环保工程技术有限公司 | Volatile organic waste gas treatment process |
| CN110823757A (en) * | 2019-11-28 | 2020-02-21 | 辽宁工程技术大学 | Low-permeability coal bed gas microwave-liquid nitrogen circulating freeze-thaw degradation-promotion permeability-increasing experimental device and method |
| CN113209918A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Microwave coupling catalytic reactor and VOCs treatment facility |
| CN113209919A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Microwave coupling catalytic reactor and VOCs treatment facility |
| CN113209815A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Equipment for treating VOCs (volatile organic compounds) by microwave enhanced catalytic oxidation |
| CN113209921A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Microwave coupling catalytic reactor and VOCs treatment facility |
| CN114456411A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Polypropylene resin with low VOC content and preparation method thereof |
| CN117665041A (en) * | 2024-02-01 | 2024-03-08 | 中海石油气电集团有限责任公司 | Radio frequency heating oil-rich coal in-situ pyrolysis simulation test device and method |
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| CN1199887C (en) * | 2002-04-23 | 2005-05-04 | 大连理工大学 | Microwave catalytic oxidation process and apparatus for treating waste water containing hard-to-degrade organic matters |
| AU2009314130B2 (en) * | 2008-11-11 | 2013-01-10 | Molycorp Minerals Llc | Target material removal using rare earth metals |
| CN101502757B (en) * | 2009-02-09 | 2011-05-11 | 大连海事大学 | Physical and chemical cooperated purification system and method for processing PFCs |
| FR2945966B1 (en) * | 2009-05-28 | 2014-06-20 | Centre Nat Rech Scient | USE OF A POROUS CRYSTALLINE HYBRID SOLID AS A CATALYST FOR REDUCING NITROGEN OXIDES AND DEVICES |
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