CN104906951A - Method and device for removing volatile organic compounds by photo-production ozone catalytic oxidation - Google Patents

Method and device for removing volatile organic compounds by photo-production ozone catalytic oxidation Download PDF

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Publication number
CN104906951A
CN104906951A CN201510374918.7A CN201510374918A CN104906951A CN 104906951 A CN104906951 A CN 104906951A CN 201510374918 A CN201510374918 A CN 201510374918A CN 104906951 A CN104906951 A CN 104906951A
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China
Prior art keywords
volatile organic
uviol lamp
catalyst
ozone
organic matter
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CN201510374918.7A
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Chinese (zh)
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徐仲均
段亚菲
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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Priority to CN201510374918.7A priority Critical patent/CN104906951A/en
Publication of CN104906951A publication Critical patent/CN104906951A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The invention provides a method and a device for removing volatile organic compounds by photo-production ozone catalytic oxidation. The device consists of a draught fan, a shell, a filter layer, an ultraviolet lamp and a catalyst, wherein the ultraviolet lamp and the catalyst form core components of the device. The purifying principle is as follows: ozone is generated by oxygen under an ultraviolet light effect, oxidized free radicals are generated by ozone under the ultraviolet light effect, the volatile organic compounds are converted into carbon dioxide and water under the effect of ozone and oxidized free radicals, unutilized ozone is further converted into oxidized free radicals under the catalyst effect, the volatile organic compounds are further degraded, and finally the discharging concentrations of the volatile organic compounds and ozone can achieve the discharging requirement. The method and the device can be applied to purification of industrial waste gas containing the volatile organic compounds and indoor air.

Description

A kind of photoproduction catalytic ozonation removes method and the device of volatile organic matter
Technical field
The present invention relates to field of environmental technology, particularly a kind of photoproduction catalytic ozonation removes the method for volatile organic matter and application of installation in the waste gas purification process containing volatile organic matter, can be used for industrial waste gas and indoor air purification.
Background technology
Volatile organic matter (VOCs) is as component comparatively active in air, and it is not only directly detrimental to health, and also can form the secondary pollution such as photochemical fog and Organic aerosol in an atmosphere, become PM 2.5important as precursors thing.Meanwhile, VOCs or room air major pollutants.Therefore, the purification techniques of research and development VOCs, the discharge reducing VOCs contributes to environmental protect air quality and ensures health, is also the active demand of Sustainable Socioeconomic Development.
At present, the technology purified treatment such as absorption, burning or catalytic combustion, photochemical catalytic oxidation, plasma decomposes and biological treatment can be adopted the VOCs in industrial waste gas, yet there are no photoproduction catalytic ozonation process industrial waste gas VOCs technology.
In addition, indoor air cleaner is of a great variety, but most clarifier product exists inherent shortcoming.Filtering type clarifier can only remove particle, can not eliminate gaseous volatile organic matter.There is saturated phenomenon in adsorption cleaning device, needs frequently to change adsorbent.Photocatalysis technology is applied to indoor air purification, and because light utilization efficiency is low, purification efficiency is not high.Utilize photoproduction catalytic ozonation technology can significantly improve room air VOCs clearance.
The present invention proposes method and device that a kind of photoproduction catalytic ozonation removes VOCs, oxygen is utilized to produce ozone under action of ultraviolet light, ozone produces oxidative free radical under action of ultraviolet light, VOCs is converted into carbon dioxide and water under ozone and oxidative free radical effect, the ozone do not utilized is further converted to oxidative free radical under catalyst action, continue degraded VOCs, the exit concentration of final VOCs and ozone all reaches emission request.
Summary of the invention
The invention provides method and device that a kind of photoproduction catalytic ozonation removes volatile organic matter, the present invention is implemented by following technical scheme:
Method and the device of described a kind of photoproduction catalytic ozonation removal volatile organic matter are made up of blower fan, housing, filter course, uviol lamp, catalyst.After waste gas enters housing under fan action, by filter course, the particle in removing waste gas.Then, waste gas enters in the reaction system be made up of uviol lamp and catalyst.Oxygen in waste gas produces ozone under action of ultraviolet light, ozone produces oxidative free radical under action of ultraviolet light, VOCs is converted into carbon dioxide and water under ozone and oxidative free radical effect, the ozone do not utilized is converted into oxidative free radical further under catalyst action, continues degraded VOCs.
Described a kind of photoproduction catalytic ozonation removes method and the device of volatile organic matter, and its core component is uviol lamp and catalyst.Described housing is made up of the aluminium-plastic panel of stainless steel or paper tinsel of aluminizing.Described uviol lamp comprises one or more uviol lamp, uviol lamp wavelength≤254nm, preferred uviol lamp wavelength≤185nm, and uviol lamp arrangement mode is vertical with airflow direction, and uviol lamp end adopts encapsulant sealing.Described catalyst is made up of carrier supported metal oxide, wherein, described carrier includes but are not limited to the foam metals such as nickel foam, foam copper, foamed aluminium, and the porous material such as ceramic honey comb, active carbon, molecular sieve, described catalyst include but are not limited in cupric oxide, cerium oxide, manganese oxide, iron oxide, tin oxide, antimony oxide and other transition metal oxides one or more, be preferably MnOx-SnOx-CeOx-SbOx composite oxides.
Accompanying drawing explanation
Fig. 1 is method and device embodiment 1 structural representation that a kind of photoproduction catalytic ozonation of the present invention removes volatile organic matter.
Fig. 2 is take the present invention as the industrial waste gas purifying process schematic representation of clean unit.
Fig. 3 is method and device embodiment 2 structural representation that a kind of photoproduction catalytic ozonation of the present invention removes volatile organic matter.
In figure: 1. housing; 2. waste gas; 3. blower fan; 4. filter course; 5. uviol lamp; 6. catalyst; 7. purified gas.
Detailed description of the invention
Embodiment 1: be applied to industrial waste gas purifying.
A kind of photoproduction catalytic ozonation removes volatile organic matter device as shown in Figure 1, comprises housing 1, waste gas 2, blower fan 3, filter course 4, uviol lamp 5, catalyst 6, purified gas 7.Containing VOCs waste gas 2 under the power conveying of blower fan 3, after the udst separation of filter course 4, enter in the photoproduction catalytic ozonation reaction system be made up of uviol lamp 5 and catalyst 6, VOCs in waste gas is oxidized to harmless carbon dioxide and water, if ozone is superfluous, be then catalyzedly decomposed into oxygen.This embodiment is 1000m to flow 3h -1, concentration is 500mg m -3can reach more than 98% containing the purifying rate of toluene gas.If industrial waste gas purifying implementing process is undertaken by shown in Fig. 3, then without filter course, directly can install deduster according to dustiness additional before waste gas enters catalysis system before apparatus of the present invention.
Embodiment 2: be applied to indoor purifying.
A kind of photoproduction catalytic ozonation removes volatile organic matter device as shown in Figure 1, comprises housing 1, waste gas 2, blower fan 3, filter course 4, uviol lamp 5, catalyst 6, purified gas 7.Containing VOCs waste gas 2 under the power conveying of blower fan 3, after the udst separation of filter course 4, enter in the photoproduction catalytic ozonation reaction system be made up of uviol lamp 5 and catalyst 6, VOCs in waste gas is oxidized to harmless carbon dioxide and water, if ozone is superfluous, be then catalyzedly decomposed into oxygen.This embodiment is 100m to flow 3h -1, concentration is 1mg m -3can reach more than 100% containing the purifying rate of toluene gas.

Claims (7)

1. a photoproduction catalytic ozonation removes method and the device of volatile organic matter, it is characterized in that, utilize blower fan to be sent into by the waste gas containing volatile organic matter in the reaction system be made up of uviol lamp and catalyst, the volatile organic matter in waste gas is resolved into the innocuous substance such as carbon dioxide and water by the oxidative free radical that ozone and catalysis ozone produce.
2. a kind of photoproduction catalytic ozonation according to claim 1 removes method and the device of volatile organic matter, it is characterized in that, described photoproduction catalytic ozonation removes method and the device of volatile organic matter, is made up of blower fan, housing, filter course, uviol lamp, catalyst.
3. a kind of photoproduction catalytic ozonation according to claim 1 removes method and the device of volatile organic matter, it is characterized in that, described housing is made up of the aluminium-plastic panel of stainless steel or paper tinsel of aluminizing, it is filter course between case entrances and uviol lamp, particle in removing waste gas, the core component of described uviol lamp and catalyst constituent apparatus, oxidation and catalyzing oxidizing degrading air-flow in volatile organic matter, described case top is exhaust outlet.
4. uviol lamp according to claim 2, is characterized in that, described uviol lamp comprises one or more uviol lamp, uviol lamp wavelength≤254nm, preferred uviol lamp wavelength≤185nm, uviol lamp arrangement mode is vertical with airflow direction, and uviol lamp end adopts encapsulant sealing.
5. catalyst according to claim 2, is characterized in that, described catalyst is made up of carrier supported metal oxide, can produce oxidative free radical by catalysis ozone.
6. carrier according to claim 5, is characterized in that, described carrier includes but are not limited to the foam metals such as nickel foam, foam copper, foamed aluminium, and the porous material such as ceramic honey comb, active carbon, molecular sieve.
7. catalyst according to claim 5, it is characterized in that, described catalyst include but are not limited in cupric oxide, cerium oxide, manganese oxide, iron oxide, tin oxide, antimony oxide and other transition metal oxides one or more, be preferably MnOx-SnOx-CeOx-SbOx composite oxides.
CN201510374918.7A 2015-06-30 2015-06-30 Method and device for removing volatile organic compounds by photo-production ozone catalytic oxidation Pending CN104906951A (en)

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CN105597528A (en) * 2015-11-03 2016-05-25 中山大学 Waste gas purification device and process
CN105642088A (en) * 2016-03-16 2016-06-08 南京曜灵环保科技有限公司 Device and method for treating polyamine organic waste gas
CN105749711A (en) * 2016-04-14 2016-07-13 北京化工大学 Air purifier with photooxidation coupling catalytic ozonation functions
CN105771574A (en) * 2016-03-07 2016-07-20 北京化工大学 Process for purifying nitrogen-containing organic waste gas by adopting photon-generated ozone catalytic oxidation coupled biological method
CN105864908A (en) * 2016-04-15 2016-08-17 北京化工大学 Multistage plasma air purifier
CN105944530A (en) * 2016-06-01 2016-09-21 北京化工大学 Device for treating volatile organic compounds (VOCs) through plasma and ultraviolet light
CN110052287A (en) * 2019-05-17 2019-07-26 湘潭大学 A kind of the core-shell structure molecular sieve catalyst and preparation method of Collaborative Control NO and toluene
CN110180385A (en) * 2019-06-19 2019-08-30 沈阳理工大学 Porous ceramics catalytic oxidizer and its preparation method, multipurpose high-efficiency air cleaning unit

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105597528A (en) * 2015-11-03 2016-05-25 中山大学 Waste gas purification device and process
CN105771574A (en) * 2016-03-07 2016-07-20 北京化工大学 Process for purifying nitrogen-containing organic waste gas by adopting photon-generated ozone catalytic oxidation coupled biological method
CN105642088A (en) * 2016-03-16 2016-06-08 南京曜灵环保科技有限公司 Device and method for treating polyamine organic waste gas
CN105749711A (en) * 2016-04-14 2016-07-13 北京化工大学 Air purifier with photooxidation coupling catalytic ozonation functions
CN105864908A (en) * 2016-04-15 2016-08-17 北京化工大学 Multistage plasma air purifier
CN105944530A (en) * 2016-06-01 2016-09-21 北京化工大学 Device for treating volatile organic compounds (VOCs) through plasma and ultraviolet light
CN110052287A (en) * 2019-05-17 2019-07-26 湘潭大学 A kind of the core-shell structure molecular sieve catalyst and preparation method of Collaborative Control NO and toluene
CN110180385A (en) * 2019-06-19 2019-08-30 沈阳理工大学 Porous ceramics catalytic oxidizer and its preparation method, multipurpose high-efficiency air cleaning unit

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Application publication date: 20150916