CN202527062U - Waste gas purification device - Google Patents

Waste gas purification device Download PDF

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Publication number
CN202527062U
CN202527062U CN2012201376329U CN201220137632U CN202527062U CN 202527062 U CN202527062 U CN 202527062U CN 2012201376329 U CN2012201376329 U CN 2012201376329U CN 201220137632 U CN201220137632 U CN 201220137632U CN 202527062 U CN202527062 U CN 202527062U
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CN
China
Prior art keywords
waste gas
gas purification
clarifier casing
water
atomising
Prior art date
Application number
CN2012201376329U
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Chinese (zh)
Inventor
刘德启
张璐鑫
刘帅
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苏州大学
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Priority to CN2012201376329U priority Critical patent/CN202527062U/en
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Publication of CN202527062U publication Critical patent/CN202527062U/en

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Abstract

The utility model provides a waste gas purification device which comprises a purifier box body, an atomization device and a catalysis device, wherein the purifier box body is provided with a waste gas inlet and a waste gas outlet; the atomization device is communicated with the purifier box body, and can atomize aqueous hydrogen peroxide solution into fog drops, and send the fog drops in the purifier box body; and the catalysis device is arranged in the purifier box body, and comprises glass fiber, as well as a photosensitive catalyst and a transitional metal catalyst arranged on the glass fiber. According to the waste gas purification device, the atomization device can atomize the aqueous hydrogen peroxide solution into the fog drops with small grain sizes and large specific surface area; when the fog drops absorb waste gas and are in oxidation reaction with pollutants in waste gas, larger contact area can be obtained, so that the purification efficiency is improved; the photosensitive catalyst and the transitional metal catalyst catalyze hydrogen peroxide to generate a great number of hydroxyl radical active oxygen substances and other substances; and the active oxygen substances can oxidize the pollutants in waste gas, so that the purification efficiency is further improved. Meanwhile, hydrogen peroxide in the fog drops is completely resolved, without causing secondary pollution.

Description

Waste gas purification apparatus
Technical field
The utility model belongs to the treatment of waste gas field, relates in particular to a kind of waste gas purification apparatus.
Background technology
Along with developing rapidly of Chinese national economy; Particularly chemical industry and manufacturing development; The discharge capacity of industry VOCs (VOC) constantly increases, and has become the one of the main reasons of China key cities (crowd) and local atmospheric combined pollution at present.Therefore, after the dedusting that continues, desulfurization, denitration and automobile pollution were administered, the pollution control problem of industrial VOCs had become the of paramount importance direction of present control air pollution in China.
In the production process of painting workshop, usually can use organic solvent, like xylenes, toluene, ethyl acetate, butanone etc.Also can discharge a large amount of effumability foul waste gas at the synthetic petrochemical industry workshop that reaches of organic chemicals.Often contain low boiling, high-volatile compound (VOCs) in these waste gas, not only poisonous but also inflammable.VOCs not only has spread effect to human body, and wherein many toxic effects, still mutagen and the carcinogenic substance that have.Alkene among the VOCs and some arene compound in atmosphere, expose in the sun, can also react with nitrogen oxide and form the photochemical fog or the industrial photochemical fog of Los Angeles type, cause secondary pollution.Difference in view of VOCs component in the discharging waste gas and concentration thereof; Present China common used in industry VOCs pollution control technology aborning has multiple; According to the difference of handling principle and technology, can be divided into: when VOCs concentration is high, (reach the spontaneous combustion level), adopt the torch burning method; When VOCs concentration is low, adopt enrichment-firing method, like preconcentration with activated carbon-burning, molecular sieve runner absorption condensed combustion technology, heat-storage catalytic combustion technology (RCO) and accumulation of heat incineration technology (RTO) etc.; Other also have plasma technique, water absorption-biological cleaning technology, water absorption-photocatalysis technology and water absorption-membrane technology etc.These technology respectively have pluses and minuses, and its shortcoming mainly is: form secondary pollution, cost is high, in use usually according to the VOCs component constitute, discharging intensity, discharging gas VOCs concentration and discharging environmental quality select technology.
But China lags behind to the new product research and development of VOCs control, and the overall technology gap bigger with comparing existence abroad of administering can not satisfy the continuous needs of market to new technology simultaneously.Be badly in need of a kind of efficient, cleaning of exploitation, industrial waste gas purifying technology and device that operating cost is cheap.Therefore the research and development of carrying out the VOCs technology for clarifying are of great practical significance and have very wide investment space.
The utility model content
In view of this, the utility model provides a kind of waste gas purification apparatus, and this waste gas purification apparatus purification efficiency is high, do not produce secondary pollution.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of waste gas purification apparatus comprises:
The clarifier casing is provided with exhaust gas entrance and waste gas outlet;
Atomising device is communicated in said clarifier casing, and this atomising device can be atomized into droplet with aqueous hydrogen peroxide solution, and this droplet is sent in the said clarifier casing;
Catalytic unit is located in the said clarifier casing, comprises glass fibre and modifies light-sensitive catalyst and the transition-metal catalyst on this fiberglass surfacing.
Preferably, in above-mentioned waste gas purification apparatus, a plurality of said glass fibres axially are provided with certain interval along said clarifier casing.
Preferably, in above-mentioned waste gas purification apparatus, said waste gas purification apparatus also comprises uviol lamp, and said uviol lamp is located in the said clarifier casing.
Preferably, in above-mentioned waste gas purification apparatus, a plurality of said uviol lamps are provided with certain interval along the axis of said glass fibre.
Preferably, in above-mentioned waste gas purification apparatus, said atomising device comprises ultrasonic ultrasonic delay line memory and send day with fog, and the said day with fog that send is connected between ultrasonic ultrasonic delay line memory and the said clarifier casing, saidly send day with fog to comprise pipeline and is located at the blower fan in this pipeline.
Preferably; In above-mentioned waste gas purification apparatus, the water collector of taper is arranged in the bottom of said clarifier casing, and said waste gas purification apparatus also comprises water charging system; This water charging system one end is connected in said atomising device, and the other end is connected to said water collector and external water source.
Preferably; In above-mentioned waste gas purification apparatus; Said waste gas purification apparatus also comprises control system and liquid level sensor; Said liquid level sensor is located in the said water collector, and said control system receives the signal of said liquid level sensor and controls the water that said water charging system increases or reduce the external water source supply.
Preferably; In above-mentioned waste gas purification apparatus; Said waste gas purification apparatus also comprises control system and waste gas monitoring sensor; Said waste gas monitoring sensor is located at said waste gas outlet, and said control system receives the signal of said waste gas monitoring sensor and controls said atomising device increases or reduce the mist amount of producing.
Preferably, in above-mentioned waste gas purification apparatus, said transition-metal catalyst is a transition metal copper.
Preferably, in above-mentioned waste gas purification apparatus, said clarifier casing adopts stainless steel materials or PP plate or PVC plate to process.
Compared with prior art, the waste gas purification apparatus that the utility model provides comprises: the clarifier casing is provided with exhaust gas entrance and waste gas outlet; Atomising device is communicated in said clarifier casing, and this atomising device can be atomized into droplet with aqueous hydrogen peroxide solution, and this droplet is sent in the said clarifier casing; Catalytic unit is located in the said clarifier casing, comprises glass fibre and modifies light-sensitive catalyst and the transition-metal catalyst on this fiberglass surfacing.In the waste gas purification apparatus of the utility model; Atomising device can be atomized into the droplet that particle diameter is little, specific area is big with hydrogenperoxide steam generator; During pollutant generation oxidation reaction in absorbing waste gas and waste gas, can obtain bigger contact area, thereby improve purification efficiency; Light-sensitive catalyst and transition-metal catalyst carry out catalysis to hydrogen peroxide, produce great amount of hydroxy group free radical isoreactivity oxygen species, and these active oxygen species can oxidation gaseous effluent, thereby has further improved purification efficiency.Simultaneously, the hydrogen peroxide in the droplet also can be decomposed fully, can not cause secondary pollution.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Structural representation for the waste gas purification apparatus that provides in the utility model specific embodiment shown in Figure 1.
The specific embodiment
The utility model is with light-sensitive catalyst TiO 2And transition metal copper is modified on the glass fibre, prepared to have height hydrogen peroxide (H 2O 2) the environmental catalysis material of catalytic activation.Combine this material with ultrasonic ultrasonic delay line memory, and be coupled with ultraviolet light source fortifying catalytic technology, createed a kind of efficient, cleaning, operating cost is low, the industrial waste gas purifying technology and the device that are easy to control.
In order to make those skilled in the art understand the technical scheme of the utility model better; Below in conjunction with the accompanying drawing and the specific embodiment the utility model is carried out clear, intactly description; Obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of waste gas purification apparatus, comprising:
The clarifier casing is provided with exhaust gas entrance and waste gas outlet;
Atomising device is communicated in said clarifier casing, and this atomising device can be atomized into droplet with aqueous hydrogen peroxide solution, and this droplet is sent in the said clarifier casing;
Catalytic unit is located in the said clarifier casing, comprises glass fibre and modifies light-sensitive catalyst and the transition-metal catalyst on this fiberglass surfacing.
Structural representation for the waste gas purification apparatus 10 that provides among the utility model embodiment shown in Figure 1.
Clarifier casing 11 adopts stainless steel materials, pp plate (polypropylene board) or PVC plate to be processed into cylinder, and its axis is positioned at horizontal direction.Preferably; Clarifier casing 11 adopts stainless steel materials to process in the utility model, because stainless steel materials has good reflective characteristic, can the light of the uviol lamp of its inside be reflected; Improve the catalytic effect of uviol lamp, also avoided waste simultaneously.Pp plate or PVC plate can be provided with stainless steel inner lining in its inwall because reflective characteristic is relatively poor.Be easy to expect that the shape of clarifier casing 11 and size can be provided with according to practical application.
The water collector 111 of taper is arranged in the bottom of clarifier casing 11, and water collector 111 is positioned at the below of catalytic unit 13, in order to collect the atomizing condensate.The left end of clarifier casing 11 is provided with exhaust gas entrance, and right-hand member is provided with waste gas outlet.The exhaust gas entrance place is provided with flange 112, and exhaust gas entrance is connected with pipeline 113, and pipeline 113 gets into clarifier casing 11 inside in order to exhaust gas routing.
Atomising device 12 comprises ultrasonic ultrasonic delay line memory 121 and send day with fog 122, send day with fog 122 to be connected between ultrasonic ultrasonic delay line memory 121 and the clarifier casing 11, send day with fog 122 to comprise pipeline 1221 and is located at the blower fan 1222 in this pipeline.
Ultrasonic ultrasonic delay line memory 121 and product mist amount parameter thereof are selected according to the throughput of factory's actual discharge waste gas (mainly referring to VOCs).Concentration (mg/m according to waste gas 3) confirm to send the mist amount, unit volume fog and waste gas total mass ratio are 0.5~5: 1.
Catalytic unit 13 is located in the clarifier casing 11, comprises glass fibre 131 and modifies the light-sensitive catalyst (TiO on this fiberglass surfacing 2) and transition-metal catalyst.Transition-metal catalyst is preferably transition metal copper.
A plurality of glass fibres 131 axially are provided with certain interval along clarifier casing 11.The shape of glass fibre 131 is carried out relative set according to the cross sectional shape of clarifier casing 11, and the size of each glass fibre 131 and shape are all identical, and preferred, glass fibre 131 is a disc, and its thickness is preferably 5mm.The quantity of glass fibre 131 is by the axial length decision of clarifier casing 11, and the interval between the adjacent glass fiber 131 is preferably 20mm.
Waste gas purification apparatus 10 also comprises uviol lamp 14, and uviol lamp 14 is located in the clarifier casing 11.A plurality of uviol lamps 14 are provided with certain interval along the axis of glass fibre 131, constitute ultraviolet and strengthen reaction zone.
Waste gas purification apparatus 10 also comprises water charging system 15, and these water charging system 15 1 ends are connected in atomising device 12, and the other end is connected to water collector 111 and external water source.External water source is preferably the automatically additional hydrophone that is connected with running water pipe.
Waste gas purification apparatus 10 also comprises control system 16 and liquid level sensor 17, and liquid level sensor 17 is located in the water collector 111, and control system 16 receives the signal of liquid level sensor 17 and controls the water that water charging system 15 increases or reduce the external water source supply.
Water in the water collector 111 is through after filtering, add the hydrogen peroxide of respective concentration again after, can supply ultrasonic ultrasonic delay line memory 121 to use again.Therefore can not produce residue waste water in the entire process process, purification process extremely cleans.
Liquid level sensor 17 when the water in water collector 111 can satisfy ultrasonic ultrasonic delay line memory 121 uses, then can reduce or not need the supply at outside water source in order to sensing water collector 111 middle water levels; Water level in detecting water collector 111 is crossed when hanging down, and control system 16 control water charging systems 15 increase the water of external water sources supply.The flow of external water source can be realized through the folding of controlling its magnetic valve.
Waste gas purification apparatus 10 also comprises waste gas monitoring sensor 18, and waste gas monitoring sensor 18 is located at waste gas outlet, and control system 16 receives the signal of waste gas monitoring sensor 18 and controls atomising device 12 increases or reduce the mist amount of producing.
Waste gas monitoring sensor 18 is in order to the exhaust gas concentration in the real-time monitoring discharging gas.Toxic emission characteristics (like pollutant kind, discharging intensity etc.) according to height and this emission source of emission source; And regulation requires to reach " discharge standard of air pollutants " limit value in (GB16297-1996); Design the automatic control parameter of this emission source; And be real time control command with waste gas monitoring sensor 18, set up automation and add mist amount control feedback, make whole system be in the automation state of a control fully.
The user can be according to actual needs, and volume or glass fibre 131 quantity or the hydrogen peroxide atomization quantity etc. of adjustment clarifier casing 11 are through satisfying the processing requirements of dissimilar industrial waste gases after the parameter optimization.In addition, complicated at waste gas component, when concentration is higher or can use 10 series connection of many groups waste gas purification apparatus, can realize satisfactory results.
The operation principle of waste gas purification apparatus 10 is: utilize 121 pairs of ultrasonic ultrasonic delay line memories to contain formed atomic little, the evengranular droplet of certain density aqueous hydrogen peroxide solution; The mist particle diameter average is 1~5 μ m; And send into these droplets in the clarifier casing 11 that is connected mutually with pipeline 1221 with air-flow; Droplet is contacted with VOCs in the pipeline 113; Droplet that particle diameter is little, specific area is big absorb in the flue gas VOCs and with wherein hydroperoxidation, make that to be prone to oxidized VOCs component first oxidized; When droplet runs into catalytic unit 13, form water droplet, the while, hydrogen peroxide wherein was again by light-sensitive catalyst (TiO 2) and the catalysis of transition metal copper institute, produce great amount of hydroxy group free radical isoreactivity oxygen species, the further oxidation VOCs of these active oxygen species, and by the ultraviolet reinforcement catalytic oxidation.So this process can make VOCs thoroughly oxidized, the hydrogen peroxide in the droplet also is decomposed fully simultaneously, can not cause the secondary pollution of air.Thereby realized purpose to the purification of VOCs component.So simultaneously, in catalytic unit 13 (cooperative with ultraviolet radiation) catalytic oxidation district, droplet condenses again on glass fibre 131 solid phase interfaces, and wall is assembled in the effect lower edge of gravity, then through water collector 111 collection water sources; Collect water through filtering (as wherein containing suspended particulate substance), add the hydrogen peroxide of respective concentration again after, can supply ultrasonic ultrasonic delay line memory 121 to use again.Therefore, this technology can not produce residue waste water in the entire process process, and purification process extremely cleans.Contrast according to commercialization electrical heating humidifier and ultrasonic atomizer; Usually under identical product mist amount (30Kg/h) situation; Ultrasonic ultrasonic delay line memory approximately only accounts for 13.3% of electroheating type humidifier institute wasted work rate; So the ultrasonic atomizatio energy consumption is far below electrical heating, so the utility model waste gas purification apparatus 10 is very energy-conservation again, and operating cost is low.
The effect of the waste gas purification apparatus 10 that the utility model is provided below in conjunction with embodiment is elaborated.
Embodiment 1
Clean-up effect analysis to vehicle spray painting workshop containing xylene emission.
The industrial waste gas that contains xylene solvent to the painting workshop discharging adopts above-mentioned waste gas purification apparatus 10 to carry out field trial, and the Design Treatment ability of waste gas purification apparatus 10 is 0.1m 3/ min.Experimental result is participated in following table 1 (gas flow temperature is 25 ℃).From table, can find out, when VOCs concentration is lower than 1000mg/m 3The time, when fog and VOCs mass ratio are controlled at 1-2, in the Design Treatment limit of power, can both satisfy the limit value that requires of discharge standard.And work as VOCs concentration at 2000mg/m 3When above, along with the increase of concentration of emission, control simultaneously adds mass ratio>2 o'clock of mist amount and VOCs, and when the apparatus processes ability reached the 40%-120% of designed capacity, the concentration value of xylenes was all in the scope that discharge standard is stipulated in giving vent to anger.Above-mentioned experimental result has well explained technology to have fine clean-up effect to containing xylene emission.
Table 1
Embodiment 2
The synthetic workshop of chemical industry is contained the clean-up effect analysis of phenol waste gas.
Adopt the synthetic workshop of 10 pairs of chemical industry of above-mentioned waste gas purification apparatus to contain phenol waste gas and carried out field trial, the Design Treatment ability of waste gas purification apparatus 10 is 0.1m 3/ min.Experimental result is participated in following table 2 (gas flow temperature is 45 ℃).From table, can find out that phenol content is at 200-1000mg/m in the experimental session pipeline waste gas 3Scope when fog and VOCs mass ratio are controlled at 0.7-2.0, can both satisfy the limit value that requires of discharge standard in the Design Treatment limit of power.Above-mentioned experimental result has well been explained and should technology be lower than 1000mg/m to containing phenol concentration 3Waste gas have fine clean-up effect.
Table 2
Embodiment 3
To containing the clean-up effect analysis of production of ethyl waste gas.
Ethyl acetate is the common diluent of film coating material, and it is released in drying course, forms the ethyl acetate organic exhaust gas of film coating process.The fluctuation of concentration of ethyl acetate is very big in the waste gas, generally at hundreds of-several thousand mg/m 3Scope.
Adopt 10 pairs of above-mentioned waste gas purification apparatuses to contain production of ethyl waste gas and carried out field trial, the Design Treatment ability of purifier 10 is 0.1m 3/ min.Experimental result is participated in following table 3 (gas flow temperature is 55 ℃).From table, can find out, when VOCs concentration is lower than 1000mg/m 3The time, when fog and VOCs mass ratio are controlled at 0.8-2.0, in the Design Treatment limit of power, can both satisfy the limit value that requires of discharge standard.And work as concentration at 2000mg/m 3When above, along with the increase of concentration of emission, control simultaneously adds mass ratio>2 o'clock of mist amount and VOCs, and when the apparatus processes ability reached the 40%-120% of designed capacity, the concentration value of ethyl acetate was all in the scope that discharge standard is stipulated in giving vent to anger.Above-mentioned experimental result has well explained technology to have fine clean-up effect to containing ethyl acetate waste gas.
Table 3
In sum, the waste gas purification apparatus that the utility model provides comprises: the clarifier casing is provided with exhaust gas entrance and waste gas outlet; Atomising device is communicated in said clarifier casing, and this atomising device can be atomized into droplet with aqueous hydrogen peroxide solution, and this droplet is sent in the said clarifier casing; Catalytic unit is located in the said clarifier casing, comprises glass fibre and modifies light-sensitive catalyst and the transition-metal catalyst on this fiberglass surfacing.In the waste gas purification apparatus of the utility model; Atomising device can be atomized into the droplet that particle diameter is little, specific area is big with hydrogenperoxide steam generator; During pollutant generation oxidation reaction in absorbing waste gas and waste gas, can obtain bigger contact area, thereby improve purification efficiency; Light-sensitive catalyst and transition-metal catalyst carry out catalysis to hydrogen peroxide, produce great amount of hydroxy group free radical isoreactivity oxygen species, and these active oxygen species can oxidation gaseous effluent, thereby has further improved purification efficiency.Simultaneously, the hydrogen peroxide in the droplet also can be decomposed fully, can not cause secondary pollution.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (10)

1. a waste gas purification apparatus is characterized in that, comprising:
The clarifier casing is provided with exhaust gas entrance and waste gas outlet;
Atomising device is communicated in said clarifier casing, and this atomising device can be atomized into droplet with aqueous hydrogen peroxide solution, and this droplet is sent in the said clarifier casing;
Catalytic unit is located in the said clarifier casing, comprises glass fibre and modifies light-sensitive catalyst and the transition-metal catalyst on this fiberglass surfacing.
2. waste gas purification apparatus according to claim 1 is characterized in that, a plurality of said glass fibres axially are provided with certain interval along said clarifier casing.
3. waste gas purification apparatus according to claim 2 is characterized in that said waste gas purification apparatus also comprises uviol lamp, and said uviol lamp is located in the said clarifier casing.
4. waste gas purification apparatus according to claim 3 is characterized in that, a plurality of said uviol lamps are provided with certain interval along the axis of said glass fibre.
5. waste gas purification apparatus according to claim 1; It is characterized in that; Said atomising device comprises ultrasonic ultrasonic delay line memory and send day with fog, and the said day with fog that send is connected between ultrasonic ultrasonic delay line memory and the said clarifier casing, saidly send day with fog to comprise pipeline and is located at the blower fan in this pipeline.
6. waste gas purification apparatus according to claim 1; It is characterized in that; The water collector of taper is arranged in the bottom of said clarifier casing; Said waste gas purification apparatus also comprises water charging system, and this water charging system one end is connected in said atomising device, and the other end is connected to said water collector and external water source.
7. waste gas purification apparatus according to claim 6; It is characterized in that; Said waste gas purification apparatus also comprises control system and liquid level sensor; Said liquid level sensor is located in the said water collector, and said control system receives the signal of said liquid level sensor and controls the water that said water charging system increases or reduce the external water source supply.
8. waste gas purification apparatus according to claim 1; It is characterized in that; Said waste gas purification apparatus also comprises control system and waste gas monitoring sensor; Said waste gas monitoring sensor is located at said waste gas outlet, and said control system receives the signal of said waste gas monitoring sensor and controls said atomising device increases or reduce the mist amount of producing.
9. waste gas purification apparatus according to claim 1 is characterized in that, said transition-metal catalyst is a transition metal copper.
10. waste gas purification apparatus according to claim 1 is characterized in that, said clarifier casing adopts stainless steel materials or PP plate or PVC plate to process.
CN2012201376329U 2012-04-01 2012-04-01 Waste gas purification device CN202527062U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102614760A (en) * 2012-04-01 2012-08-01 苏州大学 Waste gas purification device
CN105879597A (en) * 2014-12-24 2016-08-24 苏州超等环保科技有限公司 Spiral-type plasma high-voltage discharge tube exhaust gas treatment device
CN107376801A (en) * 2017-03-22 2017-11-24 傅国琳 System and its method of work occur for a kind of living radical
CN109453645A (en) * 2018-11-14 2019-03-12 中国民航大学 Motor-vehicle tail-gas centralized recovery processing system and control method in a kind of tunnel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102614760A (en) * 2012-04-01 2012-08-01 苏州大学 Waste gas purification device
CN102614760B (en) * 2012-04-01 2014-10-22 苏州大学 Waste gas purification device
CN105879597A (en) * 2014-12-24 2016-08-24 苏州超等环保科技有限公司 Spiral-type plasma high-voltage discharge tube exhaust gas treatment device
CN107376801A (en) * 2017-03-22 2017-11-24 傅国琳 System and its method of work occur for a kind of living radical
CN109453645A (en) * 2018-11-14 2019-03-12 中国民航大学 Motor-vehicle tail-gas centralized recovery processing system and control method in a kind of tunnel

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