CN104174271A - Indoor volatile organic compound purification device - Google Patents
Indoor volatile organic compound purification device Download PDFInfo
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- CN104174271A CN104174271A CN201410457941.8A CN201410457941A CN104174271A CN 104174271 A CN104174271 A CN 104174271A CN 201410457941 A CN201410457941 A CN 201410457941A CN 104174271 A CN104174271 A CN 104174271A
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- carbon fiber
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Abstract
The invention discloses a device for efficiently removing indoor low-content volatile organic compound gas to purify indoor air. The device comprises a water curtain circulating purification system, a nonwoven cloth filtering system, an ultraviolet light splitting and active carbon fiber adsorption system and a fan, wherein an overflowing device is adopted as a water curtain; a proper amount of oxidant is added into circulating water, so that water-soluble gas of an oxidized part can be absorbed, and a dust removal effect can be achieved; the filtering system adopts a piece of regenerated nonwoven cloth subjected to special antibacterial treatment; the surface of the nonwoven cloth is grafted with crylic acid and the like, so that the service life of the filtering cloth is prolonged; according to the ultraviolet light splitting and active carbon fiber adsorption system, part of volatile organic compounds can be directly adsorbed by active carbon fibers, and the rest of the volatile organic compounds are split into organic waste gas monomers distributed in an ionized state, carbon dioxide, water and the like under the ultraviolet radiation action. Equipment disclosed by the invention is high in purification efficiency, low in investment operating cost, secondary pollution-free and suitable for most indoor environments.
Description
Technical field
The present invention relates to gas treatment technology, belong to indoor air cleaner, be a kind of by processes such as the absorption of process cascade, filtration, photodestruciton, carbon fiber adsorption and catalytic combustion such as the volatile organic waste gas containing in air specifically, decompose and be oxidized to harmless clean gas.
Background technology
Gaseous contaminant in room air is except CO, NH
3outside the familiar gas of people, also comprise a large amount of VOCs.The synthetics such as the washing agent using in adhesive, paint vehicle and the daily life of using in indoor building and ornament materials, furniture, finishing manufacturing process, cosmetics can be emitted a large amount of VOCs to indoor, as formaldehyde, toluene, chloride, acetone, phenol etc.Medical research proof gaseous contaminant has many-sided harmful effect to health.Indoor TVOC concentration is greater than 0.2mg/m
3time, human body has the sensation of slight discomfort, and TVOC concentration rises to 25mg/m
3when above, just easily occur the poisoning symptoms such as headache, therefore the removal of indoor VOC is most important.The at present domestic a series of national standards such as building materials pollution discharges, civil buildings pollution control of having formulated for indoor environmental quality, as GB/T18883-2002 < < IAQ standard > >, GB 50325-2010 < < code for indoor environmental pollution control of civil building engineering > > etc.
Air purifier is a kind of various air pollutants of can adsorbing, decompose or transform, and can effectively improve the product of air cleanliness.Current domestic air purifier is of a great variety, and pattern is different, studies carefully its air cleaning principle and is mainly divided into electrostatic, photocatalysis and absorption type three classes.Particularly, electrostatic is to utilize electrode principle of corona discharge, makes electric charge on airborne dust band, then utilizes the effect of electric field force, charged particle is captured on dust collect plant, reach the object of dedusting air cleaning, airborne dust etc. is had to reasonable removal effect, but be conventionally not suitable for purifying gaseous organic pollutant, manufacture and installation quality are had relatively high expectations, and easily producing the secondary pollutions such as ozone, initial investment is larger, needs periodic cleaning to safeguard, photocatalysis is to use ultraviolet beam, under catalyst action, volatile organic waste gas is carried out to pyrolysis oxidization reaction, organic exhaust gas Degradation and Transformation is become to low molecular compound, water and carbon dioxide etc., be swift in response, non-selectivity, therefore, this method becomes development pollution control new technology faster in recent years, nano-TiO
2be a kind of novel high function fine inorganic product, its specific area is large, and chemical stability and catalytic activity are high, inexpensive and wide material sources, higher to uv absorption rate, anti-photoetch, and there is no toxicity, make it aspect removal gaseous contaminant, have obvious advantage, adsorption air-purification method is tradition relatively, but still be one of most effectual way purifying at present gaseous contaminant, its principle is to adopt porous solid absorbent (active carbon, nonwoven, filter paper, fiber, foam cotton etc.) process airborne gaseous contaminant, make one or more components wherein be adsorbed in the surface of solids, thereby reach the object of gas separation, modified activated carbon adds appropriate natural zeolite or KI etc. exactly in active carbon, can increase kind and the scope of gaseous contaminant in charcoal absorption air, popular modified activated carbon is to make some noble metals of blending in activated carbon granule by impregnating method at present, make like this active carbon to some organic gas pollutants, carry out catalytic adsorption targetedly.
China has successively formulated GB/T 18801-2008 < < air purifier standard > >, JG/T 294-2010 < < air purifier pollutant purification performance measurement > >, Wei Ge testing agency provides the guidance of detailed method of testing aspect, standard is carried out in Household Air Purifier market, promote country and the society supervision to air clearing product, for Community health's development provides technical guarantee.
Summary of the invention
The present invention designs for the situation of indoor low VOC concentration specially, not only can remove efficiently the VOC in daily room air, and overcome the drawbacks such as prior art investment operation cost is high, secondary pollution is serious.
This device comprises small-sized cascade circulating purification system, nonwoven filtration system, ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system and blower fan.What cascade adopted is overflow mechanism, and in recirculated water, adds appropriate oxidant, not only can absorb the water-soluble gas of oxidized portion, and can play dust removing effects, prevents secondary pollution.What overflow mechanism adopted is multiple tracks zigzag downflow weir, or is with pressure controlled water spray gondola water faucet, and the multiple tracks cascade of formation can improve absorption efficiency, and the effect that cycles through centrifugal pump of water realizes.Filtration system is the nonwoven that adopts special antimicrobial treatment; by the surface grafting acrylic acid at nonwoven, quantum dot etc.; the effectively growth of anti-bacteria, virus on the basis that further filters out granule impurity; increase the service life of filter cloth; in this system, also placed in addition drier; prevent the follow-up photolysis efficiency of the excessive impact of air humidity, effectively the circuit in protective device.Uviol lamp cracking and carbon fiber adsorption and catalytic combustion system, the support of active carbon fiber felt parcel is two-layer concentric circles column, and three ultraviolet lamp tubes are evenly distributed between annulus, guarantee the comprehensive radiation of ultraviolet light to the catalyst adsorbing in fibrofelt.This system can directly be adsorbed part VOC by NACF, remainder is cracked into organic exhaust gas monomer that ionic condition distributes and free of contamination carbon dioxide, water etc. under the effect of uviol lamp, catalyst, and the catalyst that photocatalysis adopts is nano-TiO
2, ZnO, by immersion way, be absorbed and fixed on active carbon fiber felt, catalysis photolysis occurs.
TiO
2light-catalyzed reaction is the process that photochemical effect occurs chemical substance on catalyst, and its essence is in opto-electronic conversion, to carry out redox reaction.TiO
2light-catalyzed reaction mechanism is very complicated, and a series of redox reaction is occurring in small region simultaneously, generally comprises the elementary reactions such as generation, interface charge and external substance transfer of semi-conductive optical excitation, active specy.The catalysis material that photocatalytic degradation VOCs technology adopts is semiconductor nano material normally, research shows, owing to there being dimensional effect, semiconductor nano ultrafine dust has produced some physicochemical characteristics different from bulk semiconductor, can significantly improve its photocatalysis efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of organic compound from waste gas treating apparatus of the present invention
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment, only for the present invention is described, limit the scope of the invention and be not used in.The specific embodiment of the present invention modified or be equal to replacement, and do not depart from spirit and scope of the invention, all should cover in the middle of claim scope of the present invention.
As shown in Figure 1, apparatus of the present invention mainly comprise following components: cascade circulation absorption system 1, filtration and drying system 2, ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system 3, blower fan 4.Wherein, cascade circulation absorption system 1 forms 19 by shell 11, upper lower flume 12,13, circulation line 14, centrifugal pump 15, zigzag downflow weir 16, water spray gondola water faucet 17, pressure equaliser 18, discharging valve.The left and right sides opening supplied gas circulation of shell.In lower flume 13, have in the situation of water, open centrifugal pump 15, by circulation line 14, water is introduced to upper flume 12, by controlling the valve of centrifugal pump 15 water sides, control the water yield, guarantee the overflow of suitable quantity of water, form cascade, for reaching better cascade absorption cleaning effect, upper flume 12 can cut off for a plurality of, and multiple tracks overflow plate 16 is set; In addition, also can in upper flume 12 bottoms, water spray gondola water faucet 17 be installed at system top plus-pressure bascule 18, can play equally the effect of multilayer cascade.Filtration and drying system 2 are the interlayer arranging between cascade circulation absorption system 1 and ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system 3, and simple in structure, left end is the filter cloth 21 that antimicrobial treatment is crossed, and the mode of pushing by sheet frame 22 is fixed.The centre of interlayer is provided with dividing plate 23, and drier 24 is placed on dividing plate.Ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system 3 include shell 31, outer active carbon fiber felt fixed support 32, outer active carbon fiber felt 33, ultraviolet lamp tube fixed support 34, ultraviolet lamp tube 35, internal layer active carbon fiber felt fixed support 36, internal layer active carbon fiber felt 37.The support 32,36 of active carbon fiber felt parcel is two-layer concentric circles column, and three ultraviolet lamp tubes 35 are evenly placed between annulus, fixing by ultraviolet lamp tube support 34, guarantees the comprehensive radiation of ultraviolet light to the catalyst adsorbing in fibrofelt.On active carbon fiber felt, absorption has nano-TiO
2, the catalyst that forms of ZnO, catalysis photodestruciton reaction occurs.The right-hand member of device is installed blower fan 4, guarantees circulation of air, and the VOC gas in room air is removed in circulation, and blower fan is comprised of shell 41, fan 42 and interlock circuit.
Embodiment 1
Remove the VOC gas in room.Indoor gas is under the effect of blower fan 4, with 0.05m
3/ s air quantity enters gas cleaning plant of the present invention, and PTR-MS detects VOC concentration in sample air and is about 800 μ g/m
3.First the cascade through containing the oxidants such as hydrogen peroxide, removes the water-soluble gas of part, and washes away the impurity such as dust of regulating the flow of vital energy in body of living in.The oxidant containing in water can turn to the gas oxygen of absorption the composition of environmentally safe, and plays the effect of sterilization, can obviously reduce secondary pollution, device operation 5 days, and the COD value in water is about 20mg/L.Gas enters filter 2 afterwards, and the antibacterial filter cloth 21 of acrylic acid and quantum dot grafting is further removed residual dust etc., and plays effect antibacterial, sterilization; The existence of drier 24 reduces the humidity of processed air, prevents its destruction to circuit in device.Ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system 3 are cores of gas cleaning plant of the present invention, handled air enters this system, under the effect of the catalyst forming at nano-TiO, ZnO on the one hand, by ultraviolet light 35, irradiate and make its part be cracked into organic exhaust gas monomer that ionic condition distributes and free of contamination carbon dioxide, water etc., ultraviolet lamp tube 35 dominant wavelengths are 253.7nm, fluorescent tube overall length 425mm, diameter 28mm, power is 15W, and heating power is 4.7W; On the other hand, the component that active carbon fiber felt 33,36 adsorbable parts are not cleaved and cracking forms afterwards, the filament diameter 10-20 μ m of active carbon fiber felt, aperture
below account for 95%.The gas finally obtaining is discharged in atmosphere under the effect of blower fan 4, records VOC concentration in the gas of processing and is about 20 μ g/m
3.VOC treatment effeciency reaches 97.5%.
Claims (9)
1. an indoor VOC gas cleaning plant, it is characterized in that: this device is by cascade circulating purification system, nonwoven filtration system, ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system form, wherein cascade is to realize by specific overflow mechanism, is added with a certain amount of oxidant in recirculated water; Nonwoven filtration system is the regeneration nonwoven through special antimicrobial treatment, and is furnished with common drier; In ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system, NACF adsorption has ultraviolet light catalyst for cracking and the component after ultraviolet light decomposition is adsorbed.
2. according to the indoor VOC gas cleaning plant described in claim 1, cascade circulating purification system is application multiple tracks zigzag downflow weir, by the controlled circulation water yield, forms cascade.
3. according to the cascade circulating purification system described in claim 2, cascade also can be realized by gondola water faucet type shower nozzle is installed below upper flume, tank top setting pressure controller.
4. according to the cascade circulating purification system described in claim 2 or 3, in recirculated water, add the oxidants such as hydrogen peroxide, add the amount of oxidant by the COD of water
crdetermine COD
crvalue and oxidant mass ratio are 1: 1-1: 10.
5. according to the indoor VOC gas cleaning plant described in claim 1, in nonwoven filtration system, filtering material adopts surface modification regeneration nonwoven, at nonwoven surface grafting band particular functional group's acrylic acid and cadmium telluride quantum dot etc.
6. according to the indoor VOC gas cleaning plant described in claim 1, its ultraviolet light cracking and carbon fiber adsorption and catalytic combustion system are to adopt absorption to have the given activity charcoal fibrofelt parcel of photodestruciton catalyst to be the metal framework of two-layer concentric circles column, and three ultraviolet lamp tubes are evenly distributed between annulus.
7. according to the ultraviolet light cracking described in claim 6 and carbon fiber adsorption and catalytic combustion system, what photodestruciton catalyst adopted is nano-TiO
2and ZnO, in the mode of flooding, be adsorbed on active carbon fiber felt.
8. according to the ultraviolet light cracking described in claim 6 and carbon fiber adsorption and catalytic combustion system, the ultra violet lamp wave-length coverage of employing is 185-254nm, and dominant wavelength is 253.7nm.
9. according to the ultraviolet light cracking described in claim 6 and carbon fiber adsorption and catalytic combustion system, the filament diameter 1-100 μ m of the active carbon fiber felt of employing, pore diameter range is 1-50nm.
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| CN201410457941.8A CN104174271A (en) | 2014-09-05 | 2014-09-05 | Indoor volatile organic compound purification device |
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| CN201410457941.8A CN104174271A (en) | 2014-09-05 | 2014-09-05 | Indoor volatile organic compound purification device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169941A (en) * | 2015-09-21 | 2015-12-23 | 天津工业大学 | Indoor light cracking adsorbing gas purification device |
| CN106807191A (en) * | 2017-02-22 | 2017-06-09 | 郭满强 | One kind is for processing VOC gas method for pyrolysis |
| CN107497289A (en) * | 2017-05-11 | 2017-12-22 | 惠安爱馨机电设备科技有限公司 | A kind of IAQ detection controlling device and its method |
| CN109847517A (en) * | 2019-03-29 | 2019-06-07 | 徐州市贾拉克文化艺术品有限公司 | A kind of print production adsorptive purifier |
| CN110124426A (en) * | 2019-05-14 | 2019-08-16 | 重庆市合川区均恒金属加工厂 | A kind of intelligence emission-control equipment |
| CN110779117A (en) * | 2019-10-08 | 2020-02-11 | 南京师范大学 | Indoor gas purification device and method by utilizing hydrogen peroxide heterogeneous advanced oxidation |
| WO2022120729A1 (en) * | 2020-12-07 | 2022-06-16 | 亚楠(南京)环保科技有限公司 | Vocs waste gas filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103495323A (en) * | 2013-10-16 | 2014-01-08 | 郑州金石环境技术有限公司 | Washing air cleaning unit |
| CN203550055U (en) * | 2013-09-25 | 2014-04-16 | 上海中能信力环境科技有限公司 | Air sterilizing purifier |
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2014
- 2014-09-05 CN CN201410457941.8A patent/CN104174271A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203550055U (en) * | 2013-09-25 | 2014-04-16 | 上海中能信力环境科技有限公司 | Air sterilizing purifier |
| CN103495323A (en) * | 2013-10-16 | 2014-01-08 | 郑州金石环境技术有限公司 | Washing air cleaning unit |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169941A (en) * | 2015-09-21 | 2015-12-23 | 天津工业大学 | Indoor light cracking adsorbing gas purification device |
| CN106807191A (en) * | 2017-02-22 | 2017-06-09 | 郭满强 | One kind is for processing VOC gas method for pyrolysis |
| CN107497289A (en) * | 2017-05-11 | 2017-12-22 | 惠安爱馨机电设备科技有限公司 | A kind of IAQ detection controlling device and its method |
| CN109847517A (en) * | 2019-03-29 | 2019-06-07 | 徐州市贾拉克文化艺术品有限公司 | A kind of print production adsorptive purifier |
| CN110124426A (en) * | 2019-05-14 | 2019-08-16 | 重庆市合川区均恒金属加工厂 | A kind of intelligence emission-control equipment |
| CN110779117A (en) * | 2019-10-08 | 2020-02-11 | 南京师范大学 | Indoor gas purification device and method by utilizing hydrogen peroxide heterogeneous advanced oxidation |
| CN110779117B (en) * | 2019-10-08 | 2024-04-30 | 南京师范大学 | Indoor gas purification device and method utilizing heterogeneous advanced oxidation of hydrogen peroxide |
| WO2022120729A1 (en) * | 2020-12-07 | 2022-06-16 | 亚楠(南京)环保科技有限公司 | Vocs waste gas filter |
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Application publication date: 20141203 |