CN203355584U - Treatment equipment for volatile organic pollutant waste gas - Google Patents

Abstract

The utility model provides treatment equipment for volatile organic pollutant waste gas. The equipment comprises a gas-collecting hood, a dry type filtering and dust removing device, a plasma purification treatment device and an ozone oxidation treatment device; the gas-collecting hood is arranged in front of the dry type filtering and dust removing device and used for collecting waste gas containing organic pollutant and conveying the waste gas to the dry type filtering and dust removing device for dust removal treatment; the plasma purification treatment device is arranged behind the dry type filtering and dust removal device and used for preliminarily purifying the waste gas; the ozone oxidation treatment device is arranged behind the plasma purification treatment device and used for purifying the waste gas secondarily.

Description

The treatment facility of volatile organic contaminant waste gas

Technical field

The utility model belongs to waste gas treatment equipment, relates in particular to a kind for the treatment of facility of volatile organic contaminant waste gas.

Background technology

Extensive use along with Organic chemical products in industrial production, the organic pollution entered in atmosphere is more and more, mainly lower boiling VOC (volatile organic compounds, be called for short VOCs), saturated vapour pressure is greater than boiling point under 71Pa or normal pressure lower than the organic compound of 260 ℃ at normal temperatures.VOCs is mainly derived from: petrochemical industry, pharmacy, printing, papermaking, bonding, coatings decoration and some other technique, paint, shoemaking, spray paint, rubber and plastic product forming, photographic film and picture tube are smeared, surface anticorrosion, communications and transportation, the modal first kinds of pollution matter discharged in the industry production such as metal plating and weaving and storage and transport process, simultaneously, colleges and universities, research institute, placement and the use procedure of various chemical reagent and medicine in inspection mechanism laboratory, and the volatile matter of sample, the leakage of analytic process intermediate product and emptying etc., capital produces VOCs waste gas, comprise various hydro carbons, halogenated hydrocarbon, alcohols, ketone, aldehydes, phenols, ethers, acids, amine, aromatic hydrocarbons, the organic pollutions such as lipid.

These pollutant kinds are various, distribute wide, are the atmosphere pollutions that another class can not be ignored after particle, sulfur dioxide and nitrogen oxide, and their discharge has not only caused the significant wastage of resource, and severe contamination environment.Volatile organic waste gas is discharged in atmosphere can cause the environmental problems such as photochemical fog, depletion of the ozone layer; Most VOCs also has toxicity, excitant, carcinogenesis even, can damage blood constituent and cardiovascular system, cause gastrointestinal disturbance, bring out immune system, internal system and disease of hematopoietic system, cause metabolic deficiency, health is caused to serious harm.The excessive emissions of VOCs also can work the mischief to industries such as agricultural and herdings.Simultaneously, along with the raising of industrial expansion and people's living standard, the discharge capacity of VOCs grows with each passing day, and has the characteristics such as scope is wide, discharge capacity is large.Nineteen ninety, the U.S. Clean Air Act amendment has been enumerated 189 kinds of toxic and harmfuls, and wherein major part is VOCs.The comprehensive regulation research of carrying out VOCs has become the focus of current international environment, and therefore, the processing of VOCs more and more is subject to the attention of countries in the world, and many countries have all promulgated corresponding decree, the discharge of restriction VOCs; In order to tackle the organic exhaust gas threat day by day serious to environmental and human health impacts, find a kind of economy, efficiently the VOCs degradation technique is very urgent.

The means of current international and domestic improvement VOCs waste gas mainly adopt: 1, absorption method; 2, absorption process; 3, direct firing method; 4, Production by Catalytic Combustion Process; 5, bioanalysis; 6, reclaim the pollutant method; 7, adsorption-catalysis incineration; 8, photocatalytic method etc., they exist equipment investment high in varying degrees, and operating cost is high, processes narrow-mindedly, and job insecurity, take up room large, and treatment effeciency is not high, has secondary pollution etc. problem.

Summary of the invention

The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, a kind for the treatment of facility of volatile organic contaminant waste gas is provided, this equipment can efficiently be removed VOCs, non-secondary pollution, and this equipment can adapt to multiple contaminated environment, strong adaptability, treating capacity are large.

Another purpose of the present utility model is to provide a kind for the treatment of facility of volatile organic contaminant waste gas, and this equipment investment is little, operating cost is low and equipment volume is little.

The utility model is achieved in that a kind for the treatment of facility of volatile organic contaminant waste gas, it is characterized in that this equipment includes gas skirt, the dry filter dust arrester, plasma for purification treating apparatus and ozone Oxidation Treatment device, before described gas skirt is arranged at the dry filter dust arrester, the waste gas that contains organic pollution in order to collection, and waste gas is transferred to the dry filter dust arrester carries out dust removal process, be provided with the plasma for purification treating apparatus after described dry filter dust arrester, the plasma for purification treating apparatus carries out first step purification to waste gas, be provided with the ozone Oxidation Treatment device after the plasma for purification treating apparatus, the ozone Oxidation Treatment device carries out the second step purification to waste gas.

The utility model equipment carries out the dust removal by filtration processing by the dry filter dust arrester to VOCs waste gas, to remove the dust granules thing in waste gas, avoid the impact of dust granules thing on subsequent treatment, further by the plasma for purification treating apparatus, VOCs waste gas is carried out to the cracking purified treatment: in the plasma for purification treating apparatus, high energy electron and gas molecule, atom generation inelastic collision, convert the energy into the interior energy of ground state molecule, atom, excite, from separating and a series of processes such as ionization, make gas in the state of activation; A large amount of O, OH, HO have been produced in collision process ₂deng free radical and active particle and the extremely strong O of oxidisability ₃, these active species are easy to and gas generation chemical reaction in the state of activation, and the online catalyst of simultaneous catalytic removal can be further by most of O ₃be converted into oxonium ion (O-, O+) and hydroxy OH and active oxygen species (O ^*, O ₂ ^*deng), the specific activity O of these particles ₃higher, thus treatment effeciency greatly improved.O, OH, HO ₂, O-, O+, O ₃, active oxygen species (O ^*, O ₂ ^*deng) etc. these active species and organic molecule, broken organic molecule group, etc. series reaction occurs, organic molecule finally is degraded to CO ₂and H ₂o or micromolecular harmless or low harmful substances.Recycling ozone Oxidation Treatment device carries out the complete oxidation purified treatment, thereby makes organic molecule finally by complete oxidation, be degraded to CO the part pollutant of escape not processed in gas, the intermediate product that part generates ₂and H ₂o or micromolecular innocuous substance, avoided independent employing low temperature plasma to be processed, there is the intermediate product that the part pollutant is escaped and part generates not processed, decompose incomplete halfway defect, the utility model resolution process is thorough, purified treatment efficiency is high, has reduced volatile organic contaminant waste gas to the pollution of environment and the harm of health.

The treatment facility of described volatile organic contaminant waste gas, gas skirt, dry filter dust arrester, plasma for purification treating apparatus and ozone Oxidation Treatment device pass through respectively pipeline connection.

Described dry filter dust arrester has the dry filter dust-removing box of sealing, be provided with the filtering material that at least one floor height level filter paper, non-woven fabrics of synthetic fiber etc. form in the dust removal by filtration casing, the both sides that the dust removal by filtration casing is relative are respectively arranged with the casing outlet that enters the casing import of casing and flow out for waste gas after dust removal process for waste gas.

Described plasma for purification treating apparatus has the plasma for purification casing of a sealing, is provided with import and outlet on the plasma for purification casing; Be provided with at least one group of energetic plasma generating means in the plasma for purification casing, and each plasma producing apparatus is to consist of at least one energetic plasma purification pipe, described at least one energetic plasma purification pipe interval layering arranges, simultaneously, all be provided with the plasma-catalytic purifying net in interval location place, import and the exit of every floor height energy plasma for purification pipe.

All layering in vertical state is evenly distributed for above-mentioned each energetic plasma purification pipe, and is fixed in casing, or the even laminating setting that is the level of state of described energetic plasma purification pipe, and is fixed on plasma for purification box inside wall.

Further, above-mentioned plasma-catalytic purifying net adopts the cellular aluminium base structure of hexagon, makes that this plasma catalytic purification net left and right is penetrating, windage is minimum.

Described ozone Oxidation Treatment device includes ozone generator, oxidation processes tower, the air intlet of ozone generator and external environment UNICOM, for by airborne oxygen infusion to ozone generator; The ozone delivery outlet of ozone generator is communicated with the oxidation processes tower, is respectively arranged with the import of oxidation processes tower and the outlet of oxidation processes tower on the oxidation processes tower.

Further, in described oxidation, purification tower, deflector is set, deflector is horizontally set in the oxidation, purification tower, one end is fixed on oxidation, purification tower wall, one end crosses out, and extends the time of staying of waste gas in the oxidation, purification tower, makes waste gas can in the oxidation, purification tower, obtain abundant oxidation processes.

And described deflector, have a plurality ofly, is crisscross arranged in the oxidation, purification tower, effectively to increase the time of staying of waste gas in the oxidation, purification tower.

The treatment facility of described volatile organic contaminant waste gas, also be provided with exhaust-carrying device, before described exhaust-carrying device is arranged on the dry filter dust arrester, or after being arranged on the ozone Oxidation Treatment device; Generally, described exhaust-carrying device is blower fan or delivery pump.

The utility model can efficiently be processed volatile organic contaminant.Can not only efficiently remove VOCs, can also efficiently remove the major pollutants such as inorganic matter, hydrogen sulfide, ammonia, thio-alcohol, and various high concentration foul waste gas, particularly the VOCs purified treatment is most effective reaches more than 99%, than adopting separately the purified treatment efficiency that the low temperature plasma cracking is processed to improve more than 26%, and non-secondary pollution; This equipment can adapt to multiple contaminated environment, and strong adaptability, treating capacity are large, adapts to the purified treatment of various concentration, various air quantity, variety classes volatile organic contaminant waste gas.

The accompanying drawing explanation

Fig. 1 is the utility model institute facilities and equipments structural representation.

Fig. 2 is that the utility model is implemented plasma for purification treating apparatus structural representation.

Fig. 3 is the structural representation that the utility model is implemented the ozone Oxidation Treatment device.

The specific embodiment

Below in conjunction with accompanying drawing, technical solutions of the utility model are elaborated:

Fig. 1 is the structural representation of the utility model apparatus embodiments.As shown in Figure 1, the treatment facility of the volatile organic contaminant waste gas that the utility model is realized, comprise the gas skirt 1, dry filter dust arrester 4, plasma for purification treating apparatus 7, the ozone Oxidation Treatment device that are communicated with by pipeline 2 successively.Wherein, before gas skirt 1 is arranged at dry filter dust arrester 4, the waste gas that contains organic pollution in order to collection, and waste gas is transferred to dry filter dust arrester 4 carries out dust removal process; Also be provided with by-pass valve control 3 before dry filter dust arrester 4, controlled with the waste gas to input; Be provided with plasma for purification treating apparatus 7 after dry filter dust arrester 4,7 pairs of waste gas of plasma for purification treating apparatus carry out first step purification, be provided with the ozone Oxidation Treatment device after plasma for purification treating apparatus 7, the ozone Oxidation Treatment device carries out the second step purification to waste gas.

The ozone Oxidation Treatment device includes ozone generator 5, oxidation, purification tower 8, and the ozone outlet of ozone generator 5 is communicated with oxidation, purification tower 8 by pipeline 2, and is provided with blower fan 6 between ozone generator 5, oxidation, purification tower 8.

Be provided with centrifugal exhaust fan 9 on pipeline 2 after oxidation, purification tower 8, centrifugal exhaust fan 9 connects discharge drums 10, with gas discharging that purified treatment is crossed in atmosphere.

Fig. 2 is the utility model plasma for purification treating apparatus structural representation.As shown in Figure 2, plasma for purification treating apparatus 7 has the plasma for purification casing 71 of sealing, is provided with import and outlet (the conventional setting, therefore do not indicate) on plasma for purification casing 7; Be provided with many group energetic plasma generating means 72(in plasma for purification casing 71 quantity of energetic plasma generating means 72 is set according to the needs of exhaust-gas treatment, the 4-6 group generally is set), plasma producing apparatus 72 is comprised of one or more energetic plasma purification pipes 73.

And, a plurality of energetic plasma purification pipe 73 interval layerings arrange, every interlayer at energetic plasma purification pipe 73 all is provided with plasma-catalytic purifying net (the conventional setting, therefore do not indicate) every import and the outlet of position, plasma for purification casing 71.Shown in Fig. 2, the vertical layering of each energetic plasma purification pipe 73 is evenly distributed, and is fixed in plasma for purification casing 71.In other embodiment, the energetic plasma purification pipe also can horizontal even laminating setting.

The energetic plasma purification pipe 73 of the present embodiment adopts the AC220V alternating source, power is that 40 ~ 100W is adjustable, the high-voltage alternating electro ultrafiltration is in energetic plasma purification pipe 73, produce the high energy plasma active, exhaust-gas treatment can be purified within the time of Millisecond, be suitable for running without interruption and processing continuously.The both sides that plasma for purification casing 71 is relative are respectively arranged with the casing outlet that enters the casing import of casing and flow out for waste gas after purified treatment for waste gas, the casing import of plasma for purification casing, centre, and the casing outlet all be provided with multilayer catalytic purification net, the online catalyst of the catalytic purification of the present embodiment is MnO ₂, catalyst MnO ₂with γ-Al ₂o ₃for carrier impregnation, to be coated to catalytic purification online, and this catalytic purification net adopts the cellular aluminium base structure of hexagon, and the penetrating windage in left and right is minimum, in the process of processing at plasma for purification, can produce certain ozone O ₃, can be by O under catalyst action ₃change oxonium ion (O-, O+) and hydroxy OH and active oxygen species (O into ^*, O ₂ ^*deng), and the specific activity O of these particles ₃higher, thus treatment effeciency greatly improved.

Fig. 3 is in conjunction with shown in Fig. 1, the ozone Oxidation Treatment apparatus structure schematic diagram of implementing for the utility model, shown in figure, the ozone Oxidation Treatment device comprises ozone generator 5, oxidation, purification tower 8, the ozone outlet of ozone generator 5 is communicated with oxidation, purification tower 8 by pipeline 2, the air intlet of ozone generator is connected with external environment, be used for airborne oxygen infusion to ozone generator 5, in order to meet the amount of oxygen in ozone generator, thereafter having blower fan 6(at ozone generator 5 can be also delivery pump, for example vavuum pump).Ozone generator 5 adopts electrion formula ozone generator, and the high-tension current of certain frequency is manufactured the high-voltage corona electric field, makes in electric field or the oxygen molecule generation electrochemical reaction in electric field surrounding air, thereby manufactures ozone.And, in enforcement of the present utility model, blower fan 6 and ozone generator 5 all adopt VFC, can automatically regulate the ozone generating amount according to different exhaust-gas treatment situations, both reached the optimization process effect, reduce again energy consumption.

In other embodiments, can not arrange for the blower fan 6 that ozone generator is provided to air on pipeline 2 yet, specifically determine according to the in-situ processing situation, as waste gas tolerance is large, concentration is higher, blower fan 6 should be set, to provide sufficient air for generation of ozone.

Consult Fig. 3, be respectively arranged with oxidation, purification tower import 81 and oxidation, purification tower outlet 82 on oxidation, purification tower 8, simultaneously at the interior deflector 83 that arranges of oxidation, purification tower 8, deflector 83 can arrange polylith, be crisscross arranged in oxidation, purification tower 8, extend the time of staying of waste gas in the oxidation, purification tower, make waste gas can in the oxidation, purification tower, obtain abundant oxidation processes.

The course of work: starting device, the plasma for purification treating apparatus, after the ozone Oxidation Treatment device starts, gas skirt 1 will be collected VOCs waste gas to be processed and enter into dry filter dust arrester 4, first carry out dust removal process, dedusting waste gas later enters in the plasma for purification casing 71 of plasma for purification treating apparatus 7 again, in the import of plasma for purification casing, middle, exit is provided with multilayer catalytic purification net, in casing, utilize the energetic plasma purification pipe (to adopt the AC220V alternating source, power is that 40 ~ 100W is adjustable), moment is carried out the cracking purified treatment to the VOCs emission molecule: the high energy electron in low temperature plasma and gas molecule, atom generation inelastic collision, convert the energy into ground state molecule, the interior energy of atom, excite, from a series of processes such as solution and ionization, make gas in the state of activation, a large amount of O, OH, HO have been produced in collision process ₂deng free radical and active particle and the extremely strong O of oxidisability ₃, these active species are easy to and gas generation chemical reaction in the state of activation, and the online catalyst of simultaneous catalytic removal can be further by most of O ₃be converted into oxonium ion (O-, O+) and hydroxy OH and active oxygen species (O ^*, O ₂ ^*deng), the specific activity O of these particles ₃higher, thus treatment effeciency greatly improved.O, OH, HO ₂, O-, O+, O ₃, with active oxygen species (O ^*, O ₂ ^*deng) etc. these active species and organic molecule, broken organic molecule group, etc. series reaction occurs, organic molecule finally is degraded to CO ₂and H ₂o or micromolecular harmless or low harmful substances.Recycling ozone Oxidation Treatment device carries out the complete oxidation purified treatment, thereby makes organic molecule finally by complete oxidation, be degraded to CO the part pollutant of escape not processed in gas, the intermediate product that part generates ₂and H ₂o or micromolecular innocuous substance, the utility model resolution process is thorough, and purified treatment efficiency is high, has reduced volatile organic contaminant waste gas to the pollution of environment and the harm of health, finally again through the discharge drum qualified discharge.

The utility model is to petrochemical industry, pharmacy, printing, papermaking, bonding, coatings decoration and some other technique, paint, shoemaking, the VOCs that sprays paint, discharges in rubber and the industry production such as plastic product forming, photographic film and picture tube are smeared, surface anticorrosion, communications and transportation, metal plating and weaving and storage and transport process carry out purified treatment, and the purified treatment efficiency of the VOCs waste gas such as toluene, dimethylbenzene, NMHC class is reached more than 99%.

In a word, of the present utility model have a following beneficial effect: 1, equipment can every days 24 continuous throughout the twenty-four hour24, and stable and reliable operation.2, energy consumption is low, operating cost is low: can be at room temperature and catalyst reaction, without heating, greatly saved the energy, cleaning equipment is without any mechanical action, noiselessness, without personal management and regular maintenance, only need to make regular check on, the cleaning equipment energy consumption is low, (1000 cubes m/hs of every processing, only power consumption approximately 0.26 the degree electric energy), the utility model cleaning equipment windage is extremely low, be generally less than 150pa, can save a large amount of air draft power consumptions.3, easy-to-use: as during design, can be regulated according to air quantity variation and field condition.4, waste gas is without pretreatment: VOCs waste gas is without carrying out special pretreatment, as heats etc., and the equipment operating ambient temperature can normally move between-35 ℃-95 ℃.5, occupation area of equipment is little, from heavy and light: be suitable for the special occasions such as characteristics of compact layout, narrow field.6, be applicable to process various concentration, the waste gas of various air quantity, be particularly suited for processing the gas of scent of and low concentration Wind Volume: cleaning equipment automation controllable degree is high, adopt PLC automatically to control, can be according to VOCs toxic emission composition, concentration, tolerance is carried out auto-control to purification apparatus power output and purification efficiency, quantity as the plasma for purification pipe of the different radicals of automatic unlatching, automatically regulate the power output of ozone generator, both reached waste gas best purification treatment effect, greatly reduce again energy consumption, realize environmental benefit, the doulbe-sides' victory of economic benefit.7, do not produce radiation.8, poisonous and harmful substance in thoroughly cracking of equipment of the present utility model, oxidation processes VOCs waste gas, do not produce accessory substance, the catalyst strong adaptability, and the accessory substance produced in the plasma reaction of optionally degrading, recycle the pollutant of ozone Oxidation Treatment device not processed escape to part in gas simultaneously, the intermediate product of generation carries out the complete oxidation purified treatment, thereby makes contaminant molecule finally by complete oxidation, be degraded to CO ₂and H ₂o or micromolecular innocuous substance, after the VOCs waste gas purification is processed, gas reaches innoxious high standard discharge fully, without the discharge of the intermediate products such as discarded object, waste water, does not produce secondary pollution.

The above, the embodiment only enumerated for the utility model, can not limit with this scope that comprises of the utility model enforcement.All equalizations of doing according to the utility model claim change and modify, and all should belong in the utility model patent covering scope.

Claims (10)

1. the treatment facility of a volatile organic contaminant waste gas, it is characterized in that this equipment includes gas skirt, dry filter dust arrester, plasma for purification treating apparatus and ozone Oxidation Treatment device, before described gas skirt is arranged at the dry filter dust arrester, be provided with the plasma for purification treating apparatus after described dry filter dust arrester, be provided with the ozone Oxidation Treatment device after the plasma for purification treating apparatus.

2. the treatment facility of volatile organic contaminant waste gas as claimed in claim 1, is characterized in that described gas skirt, dry filter dust arrester, plasma for purification treating apparatus and ozone Oxidation Treatment device pass through respectively pipeline connection.

3. the treatment facility of volatile organic contaminant waste gas as claimed in claim 1, it is characterized in that described dry filter dust arrester has the dry filter dust-removing box of sealing, be provided with the filtering material of at least one floor height level filter paper, non-woven fabrics of synthetic fiber formation in the dust removal by filtration casing, the both sides that the dust removal by filtration casing is relative are respectively arranged with the casing outlet that enters the casing import of casing and flow out for waste gas after dust removal process for waste gas.

4. the treatment facility of volatile organic contaminant waste gas as claimed in claim 1, is characterized in that described plasma for purification treating apparatus has the plasma for purification casing of a sealing, is provided with import and outlet on the plasma for purification casing; Be provided with at least one group of energetic plasma generating means in the plasma for purification casing, and each plasma producing apparatus is to consist of at least one energetic plasma purification pipe, described at least one energetic plasma purification pipe interval layering arranges, simultaneously, all be provided with the plasma-catalytic purifying net in interval location place, import and the exit of every floor height energy plasma for purification pipe.

5. the treatment facility of volatile organic contaminant waste gas as claimed in claim 4, all layering in vertical state is evenly distributed to it is characterized in that above-mentioned each energetic plasma purification pipe, and be fixed in casing, the perhaps described energetic plasma purification pipe even laminating setting that is the level of state, and be fixed on plasma for purification box inside wall.

6. the treatment facility of volatile organic contaminant waste gas as claimed in claim 4, is characterized in that above-mentioned plasma-catalytic purifying net adopts the cellular aluminium base structure of hexagon.

7. the treatment facility of volatile organic contaminant waste gas as claimed in claim 1, it is characterized in that the ozone Oxidation Treatment device includes ozone generator, oxidation processes tower, the air intlet of ozone generator and external environment UNICOM, for by airborne oxygen infusion to ozone generator; The ozone delivery outlet of ozone generator is communicated with the oxidation processes tower, is respectively arranged with the import of oxidation processes tower and the outlet of oxidation processes tower on the oxidation processes tower.

8. the treatment facility of volatile organic contaminant waste gas as claimed in claim 7, is characterized in that, in described oxidation, purification tower, deflector is set, and deflector is horizontally set in the oxidation, purification tower, and an end is fixed on oxidation, purification tower wall, and an end crosses out.

9. the treatment facility of volatile organic contaminant waste gas as claimed in claim 8, is characterized in that described deflector, has a plurality ofly, is crisscross arranged in the oxidation, purification tower.

10. the treatment facility of volatile organic contaminant waste gas as claimed in claim 1, the treatment facility that it is characterized in that described volatile organic contaminant waste gas, also be provided with exhaust-carrying device, before described exhaust-carrying device is arranged on the dry filter dust arrester, or after being arranged on the ozone Oxidation Treatment device.