CN1951544A - Method and apparatus for photochemical degradation of organic gas - Google Patents
Method and apparatus for photochemical degradation of organic gas Download PDFInfo
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- CN1951544A CN1951544A CN 200510095037 CN200510095037A CN1951544A CN 1951544 A CN1951544 A CN 1951544A CN 200510095037 CN200510095037 CN 200510095037 CN 200510095037 A CN200510095037 A CN 200510095037A CN 1951544 A CN1951544 A CN 1951544A
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Abstract
The invention relates to a method for using photochemistry method to degrade organic gas. Wherein, it uses ozone, ultraviolet or ozone-ultraviolet to oxidize the organic gas; the processed gas is filtered with particles; then enters into ultraviolet-ozone reaction area, to be radiated and reacted with ozone; then passes the solvent absorber to be purified, and discharged at gas outlet. The invention can effectively degrade organic gas as triphenylamine, without pollution.
Description
Technical field:
The invention belongs to the technical field of utilizing the photo chemistry technology degradation of organic gas, particularly a kind of method and apparatus that utilizes ultraviolet ray and ozone treatment organic gas.
Background technology:
Chemical industry, coating, printing, the volatile organic matter that produces in the industrial production such as shoemaking has caused that people more and more pay close attention to, benzene particularly, toluene, harmful steam of dimethylbenzene all is volatile organic solvent, be the environmental contaminants that a class has a strong impact on human health, vaporized gas mainly enters human body through respiratory tract, after people suck the air that is polluted by " triphen ", to cause urgency, slow poisoning, show as sphagitis, leucocyte reduces, alpastic anemia etc., to hemopoietic system, nervous system, cardiovascular and cerebrovascular and embryo have great infringement, its toxicity size is followed successively by benzene＞toluene＞dimethylbenzene, and the toxicity of triphen mist is bigger.Triphen " be one of main air pollutants in city, wherein, the concentration of toluene is higher relatively in urban air.Some developed countries make laws, and the discharging of strict these gaseous contaminants of control requires to take certain control measures.
The improvement method that domestic at present waste gas such as " triphens " mainly adopts comprises solvent absorption, ADSORPTION IN A FIXED BED method, Production by Catalytic Combustion Process, absorption/desorption-Production by Catalytic Combustion Process and photochemical method etc.
Solvent absorption is to utilize " structural similarity mixes " principle,, it is absorbed during by the absorption tower at waste gas as lyosoption with not volatile organic solvent under No. 0 normal temperature such as diesel oil, and efficient can reach more than 93%, but the waste gas qualified discharge after the absorption.This method is simple and easy to do, and cost is not high, but has the difficult shortcoming of post processing of the solvent diesel oil that has absorbed a large amount of polluters, does not tackle the problem at its root.
The ADSORPTION IN A FIXED BED method is to utilize organic molecule is had the solid matters such as active carbon, diatomite, organobentonite of strong adsorption capacity as sorbing material, arrange in some way, fix, form adsorbent bed, when waste gas under certain flow velocity and the temperature from wherein by the time, promptly be adsorbed.It is more difficult that the problem of this method also is to have adsorbed the active carbon of pollutant, and may cause secondary pollution.In addition because also there is security hidden trouble in the inflammable and explosive property of organic matter and active carbon.
The Production by Catalytic Combustion Process utilization contains the form formation catalytic combustor of the carriers such as ceramic honey comb of catalyst with fixed adsorption bed, earlier the combustion chamber is preheating to 300 ℃, then waste gas is fed, and can reach the effect that catalytic combustion is removed organic exhaust gas.If " triphen " concentration is more than 2000ppm in the waste gas, the heat that its burning produces promptly is enough to keep the temperature of combustion chamber, in addition consumed energy.But " triphen " concentration in fact most of industrial waste gases is all below 1000ppm, exists with Production by Catalytic Combustion Process and needs that consumes energy keeps that the temperature of combustion chamber, cost are higher, the easy shortcoming such as poisoning of catalyst.
Absorption/desorption-Production by Catalytic Combustion Process combines the ADSORPTION IN A FIXED BED method with Production by Catalytic Combustion Process.Its basic structural unit is divided into absorption/desorption chamber and two parts of catalytic combustor substantially.Show that according to the current paper data at present adsorption effect is best surely belongs to NACF, it has specific area (can reach 2000m greatly
2/ g), adsorption capacity height (be granular activated carbon several times～tens times), adsorption rate fast (than fast 2～3 orders of magnitude of granular activated carbon), advantage such as easy to use; be the new material that replaces traditional activated carbon granule, to begin to be applied to the improvement of various organic exhaust gas.When the waste gas of low concentration passes through, carbon fiber adsorption and catalytic combustion in the bed is fixed earlier, when reaching certain adsorbance, the hot blast that feeds 120 ℃ makes pollutant desorption (reversible reaction), at this moment waste gas concentrates through absorption, concentration improves greatly, and entering the heat that catalytic combustor rear oxidation burning produced is enough to keep the temperature of combustion chamber; Also can utilize the hot air circulate of discharge to carry out desorption simultaneously, save the energy greatly.Plural construction unit is arranged in whole system, take turns to operate at a certain time interval, can handle waste gas continuously, efficiently.Shortcoming is bigger equipment investment and higher operating cost, and cost is higher; The equipment complex structure; Easily spontaneous combustion, poor stability.
The photochemical oxidation technology is the advanced technology that grows up in the last thirty years in the world, have the incomparable advantages of conventional art such as high efficiency under normal temperature, the normal pressure, broad spectrum activity, long-life, big flow, non-secondary pollution with it, thereby have very large potential using value, become ten minutes active research direction in waste gas, the wastewater treating technology.Obtain development at full speed especially in the nearly more than ten years, progressively obtained actual application in western countries at present, and replaced chlorine (bleaching powder) and simple traditional environmental contaminants degradation techniques such as ozone oxidation in many environmental protection field gradually.Developed country has been applied to the photochemical oxidation technology urban industry wastewater organic pollutant degradation treatment, has also carried out a large amount of research aspect the improvement of waste gas, has obtained positive achievement.
Utilize photochemical basic principle, the new method of research, development process all contaminations and new technology are to pollute the focus of control chemical research always, Chinese scholars has been done a large amount of basic works in this field, obtain many achievements, progressively formed the photochemical method that pollutes control.
Summary of the invention:
One of purpose of the present invention is to provide the method for photochemical degradation of organic gas, particularly utilizes ozone and UV-irradiation to think that the method for combination comes oxidation of organic compounds.Organic gas is first through materials such as particles in the filtration filtering gas in processing procedure in the method, make waste gas be able to preliminary purification, enter ultraviolet-ozone reaction district then, in the ultraviolet radiation zone territory, there is ozone gas, waste gas accept in ultraviolet-ozone reaction district ultraviolet irradiation and and ozone reaction, thereby tail gas is thoroughly purified after discharge by exhaust outlet after the gas flow modulation of giving vent to anger by a water absorption plant again.This method collection ultraviolet effect, ozonization and ultraviolet-ozone cooperative act on one, can realize efficient, complete, the innoxious degraded to organic gas, for dusty gas provides an economical and efficient, free of contamination processing approach.
Another object of the present invention is to provide one and be suitable for the photochemical degradating device that organic gas is handled.
The device of photochemical degradation of organic gas of the present invention comprises filtering area, three parts in ultraviolet-ozonization district and water uptake zone, and described filtering area directly communicates with ultraviolet-ozone reaction district.Fill sponge or other filtering materials that is used for filtering gas in the filtering area; The filtering area material can be that individual layer also can be that multilayer is filled, and there are ozone gas and ultraviolet ray in ultraviolet-ozone reaction district, described ultraviolet ray is produced by the quartz burner that is installed in ultraviolet-ozone reaction district, described ozone both can produce via the ultraviolet lamp tube irradiation, charge into also and can set up an ozone generating-device after also can producing, or make and exist air to produce ozone via ultraviolet ray irradiation nature then in the reaction zone in ultraviolet-ozone reaction district by the ozone generator that adds.Non-filler or other hinder the material of light irradiation in described ultraviolet-ozone reaction district;
The emission wavelength of described ultraviolet lamp tube is the ultraviolet lamp tube of 100nm ~ 400nm;
Adopt the method and the integrated device thereof of ultraviolet ray and ozone treatment triphen class gas of utilizing of the present invention to have following advantage:
1. the present invention utilizes ultraviolet light and ozone (UV/O
3) the synergy oxidability very strong, the organic gas clearance reaches more than 95%, realizes the degraded fully to dusty gas;
2. the water absorption plant can be set the organic matter water in the tail gas is purified, reach harmless emission;
3. the method for photochemical degradation of organic gas of the present invention and device have been realized the design of filter process and ultraviolet, ozone reaction process integrationization, the system architecture compactness, and structure is succinct, is easy to make, operation and maintenance;
4. reduce equipment investment and maintenance and operating cost;
5. reaction condition gentleness (normal temperature, normal pressure), energy-saving effect is remarkable, and equipment can long-time steady operation, and is safe;
6. the method for photochemical degradation of organic gas and device both can utilize ultraviolet or the ozone catharsis to dusty gas separately, also can utilize the synergy of ultraviolet-ozone, and the flexibility that equipment uses is strong;
7. after the process of the waste gas among the present invention filtering area filtration treatment, directly enter ultraviolet-ozone reaction district, no longer need pipeline to connect, simple in structure; Make easy for installationly, reduce cost;
8. tail gas can be eliminated water-soluble substances in the tail gas through absorption plant further purification in the technical solution of the present invention, improves clean-up effect;
9. the treatment facility totally enclosed type of technical solution of the present invention design has effectively avoided the ultraviolet, ozone may be to staff's etc. harm, non-secondary pollution.
10. the waste water of the absorption usefulness in this method send sewage treatment plant unified processing, reduces enterprise's pollution treatment cost.
Description of drawings:
Below in conjunction with drawings and Examples integral type UV ozone dusty gas treating apparatus of the present invention and method of operating thereof are further described.
Accompanying drawing 1: be the process flow diagram of the method for photochemical degradation of organic gas of the present invention
Accompanying drawing 2: be an embodiment schematic diagram of photochemical degradation of organic gas device of the present invention;
Among Fig. 2,1 is the air inlet adjustment district, and 2 is filtering area, and 3 is ultraviolet-ozone reaction district, and 4 are the regulatory region of giving vent to anger, and 5 is dividing plate, and 6 is that cavity is concavo-convex, and 7 is air pump, and 8 is exhaust gas entrance, and 9 are the tail gas outlet, and 10 is ultraviolet lamp tube, and 11 is filtering material, and 12 is the air inlet adjustment barrier.13 is the water absorption plant
The specific embodiment:
Photochemical degradation of organic gas device main body as shown in Figure 2 is a cylindrical or prismatic container, by dividing plate container is divided into filtering area and ultraviolet-ozone reaction district 3, adjusting is after discharge by tail gas outlet 9 after solvent-borne type absorption plant 13 purifies for tail gas, and the waste water behind the absorption tail gas send sewage treatment plant unified processing.
Container is divided into air inlet adjustment district 1, filtering area 2, ultraviolet-ozone reaction district 3, solvent-borne type absorption plant 13,4 five functional areas of regulatory region of giving vent to anger, and described uviol lamp 10 is fixed in ultraviolet-ozone reaction district 2.
Filtering area 2 front portions are provided with air inlet adjustment barrier 12 air inlet adjustment district 1 are separated with filtering area 2, and described air inlet adjustment barrier 12 is fixedly linked with the container inner wall welding;
Filtering area 2 outer walls and ultraviolet-ozone reaction district 3 outer walls are that a whole interior is separated by by dividing plate 5, and described dividing plate 5 dividing plates 5 pass through for perforated plate air feed stream;
Ultraviolet-ozone reactor 3 inwalls are provided with concavo-convex 6 and are used to make the gas generation to mix;
In organic gas treating apparatus running of the present invention, pending waste gas is entered air inlet adjustment district 1 through air pump 7 and enter filtering area 2 behind air inlet adjustment barrier 12 governing speeds and flow by exhaust gas entrance 8, after distinguishing filtering material 11 filtrations in 2 after filtration, waste gas is able to preliminary purification.Waste gas directly enters ultraviolet-ozone reaction district 3 after filtering area 2 comes out, have ozone gas in ultraviolet-ozone reaction district 3 when operation.
Have ultraviolet radiation and ozone gas, the waste gas after the preliminary purification or under the effect of ozone oxidation, or is able to thorough purification under the two synergy of ultraviolet-ozone under the effect of ultra-violet radiation.Purifying back gas is discharged by tail gas outlet 9 by solvent-borne type absorption plant 13 and gas regulatory region 4 backs.
Benzene,toluene,xylene concentration is respectively 500ppm in the air inlet of experiment
v, 400ppm
v, 200ppm
vAbout, gas flow is 5 * 10
4m
3/ h, experimental rig moves continuously, and during the stable operation, the clearance of triphen is all more than 95% after measured.Compare with similar research, its treatment effect is better.
Uviol lamp 10 described in the present embodiment is parallel uviol lamp group, also can be the lamp group of cross arrangement;
The wavelength of described uviol lamp 10 is between 100 ~ 400nm.Described uviol lamp 10 is that main emission wavelength is the uviol lamp group of the identical wavelength of 100nm～400nm.
Described uviol lamp 10 is that main emission wavelength is the combination of uviol lamp of the different emission of 100nm～400nm.
Described ozone both can produce via above-mentioned uviol lamp 10 irradiations, also can be produced by the ozone generator that adds.
Described filtering material 11 can be a single or multiple lift, and material can be that sponge or other have the material of filter effect, for example nonwoven, cellucotton.
Solvent-borne type absorption plant 13 in the present embodiment is located at ultraviolet-ozone reaction district 3 and gives vent to anger between the regulatory region 4, and it also can be arranged on after the regulatory region 4 of giving vent to anger, and the solvent that uses in the present embodiment is a water, can also be other solvents such as alcohol, acetone.
Method and the device that utilizes photochemical degradation of organic gas of the present invention both can be applicable to the processing that dusty gas such as " triphens " discharges in shoes manufacturing enterprise, also can be used for handling other industrial pollution gas or volatile organic matters.
Claims (22)
1. the method for a photochemical degradation of organic gas, it is characterized in that: after waste gas is removed materials such as particle after filtration, directly enter ultraviolet-ozone reaction district, in the ultraviolet radiation zone territory, there is ozone gas, waste gas accept in ultraviolet-ozone reaction district ultraviolet irradiation and and ozone reaction, utilize ozone and UV-irradiation decomposing oxidation organic compounds, realize not tractable organic gas is changed into tractable material and harmless gas thereby utilize the solvent-borne type absorption plant that tail gas is further purified again, reach the effect that degradation of organic substances waste gas makes its qualified discharge.
2. realize the device of the photochemical degradation of organic gas of the described method of claim 1, comprise a cavity as container, it is characterized in that: described cavity is divided into loads the single or multiple lift filtering material in air inlet adjustment district (1), filtering area (2), ultraviolet-ozone reaction district (3), solvent-borne type absorption plant (13) and the regulatory region of giving vent to anger (4) filtering area, ultraviolet-ozone reaction district is provided with at least 1 ultraviolet lamp tube (10), and there is ozone gas in the ultraviolet-ozone reaction zone of equipment when operation.
3. the device of photochemical degradation of organic gas as claimed in claim 2, it is characterized in that: solvent-borne type absorption plant (13) is located between ultraviolet-ozone reaction district (3) and the regulatory region of giving vent to anger (4).
4. the device of photochemical degradation of organic gas as claimed in claim 2, it is characterized in that: solvent-borne type absorption plant (13) is located at the regulatory region of giving vent to anger (4) afterwards.
5. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described cavity is a hydrostatic column.
6. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described cavity is a prismatic container.
7. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described ozone gas can be produced by the ultraviolet ray irradiation and charge into after also can being produced by ozone generator.
8. the device of photochemical degradation of organic gas as claimed in claim 2, it is characterized in that: the outer wall of described filtering area (2) and ultraviolet-ozone reaction district (3) is an integral body, and it is inner is separated by by dividing plate (5), and described dividing plate (5) is a perforated plate.
9. the device of photochemical degradation of organic gas as claimed in claim 8, the aperture that it is characterized in that the hole on the described dividing plate (5) is 2～5mm.
10. reactor as claimed in claim 8, the aperture that it is characterized in that the hole on the described dividing plate (5) is 6～10mm.
11. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described uviol lamp (10) is parallel uviol lamp group.
12. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described uviol lamp (10) is the uviol lamp group of cross arrangement.
13. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described uviol lamp (10) is that main emission wavelength is the uviol lamp group of the identical wavelength of 100nm～400nm.
14. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described uviol lamp (10) is that main emission wavelength is the combination of uviol lamp of the different emission of 100nm～400nm.
15. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described ozone can produce via uviol lamp (10) irradiation.
16. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described ozone charges into after being produced by the ozone generator that adds.
17. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described filtering material is a sponge.
18. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described filtering material is a nonwoven.
19. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: described filtering material is a cellucotton.
20. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: the solvent that described solvent absorption plant uses is a water.
21. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: the solvent that described solvent absorption plant uses is an alcohol.
22. the device of photochemical degradation of organic gas as claimed in claim 2 is characterized in that: the solvent that described solvent absorption plant uses is an acetone.
Priority Applications (1)
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|---|---|---|---|
| CN 200510095037 CN1951544A (en) | 2005-10-21 | 2005-10-21 | Method and apparatus for photochemical degradation of organic gas |
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|---|---|---|---|
| CN 200510095037 CN1951544A (en) | 2005-10-21 | 2005-10-21 | Method and apparatus for photochemical degradation of organic gas |
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| CN 200510095037 Pending CN1951544A (en) | 2005-10-21 | 2005-10-21 | Method and apparatus for photochemical degradation of organic gas |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559322B (en) * | 2009-05-18 | 2011-03-30 | 河南工业大学 | Photodegradation device of phosphine fumigation exhaust gas |
| CN101327400B (en) * | 2008-07-18 | 2011-05-11 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN102350189A (en) * | 2011-08-24 | 2012-02-15 | 福建新大陆环保科技有限公司 | Half-dry low-temperature smoke denitrification system |
| CN102553410A (en) * | 2010-12-22 | 2012-07-11 | 宜兰大学 | Processing equipment for low-polarity organic exhaust gas having volatility |
| CN102716653A (en) * | 2011-03-30 | 2012-10-10 | 中国人民解放军63971部队 | Method for purifying phosphine tail gas from fumigation |
| CN103816782A (en) * | 2014-01-26 | 2014-05-28 | 河北欧美环境工程有限公司 | Photolytic catalytic purification device and corresponding process for treating pharmaceutical waste gas |
| TWI447334B (en) * | 2011-05-31 | 2014-08-01 | ||
| CN105311931A (en) * | 2015-11-17 | 2016-02-10 | 深圳市天得一环境科技有限公司 | Industrial VOC waste gas decomposition purification treatment method and equipment |
| CN105874892A (en) * | 2014-01-20 | 2016-08-17 | 优志旺电机株式会社 | Desmearing processing device |
| CN107081036A (en) * | 2017-06-27 | 2017-08-22 | 山东大学深圳研究院 | A kind of UV activation ozone oxidation VOCs dedusting and purifying devices and method |
| CN108273371A (en) * | 2017-08-07 | 2018-07-13 | 新大陆科技集团有限公司 | A kind of the industrial combustion process flue gas purifying method and system of double gas circuits |
| CN111732301A (en) * | 2020-06-11 | 2020-10-02 | 山东省淄博生态环境监测中心 | Device and method for treating volatile or semi-volatile organic compounds in sludge |
| CN112191084A (en) * | 2020-10-19 | 2021-01-08 | 新大陆科技集团有限公司 | Photochemical advanced oxidation treatment denitration and demercuration device |
| CN112791561A (en) * | 2021-01-13 | 2021-05-14 | 贵州威顿晶磷电子材料股份有限公司 | Trimethyl phosphite rectification tail gas deodorization method and equipment |
| CN116265044A (en) * | 2021-12-16 | 2023-06-20 | 中国科学院大连化学物理研究所 | Method for treating paraxylene liquid phase oxidation residues |
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2005
- 2005-10-21 CN CN 200510095037 patent/CN1951544A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101327400B (en) * | 2008-07-18 | 2011-05-11 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN101559322B (en) * | 2009-05-18 | 2011-03-30 | 河南工业大学 | Photodegradation device of phosphine fumigation exhaust gas |
| CN102553410A (en) * | 2010-12-22 | 2012-07-11 | 宜兰大学 | Processing equipment for low-polarity organic exhaust gas having volatility |
| CN102716653A (en) * | 2011-03-30 | 2012-10-10 | 中国人民解放军63971部队 | Method for purifying phosphine tail gas from fumigation |
| TWI447334B (en) * | 2011-05-31 | 2014-08-01 | ||
| CN102350189A (en) * | 2011-08-24 | 2012-02-15 | 福建新大陆环保科技有限公司 | Half-dry low-temperature smoke denitrification system |
| CN102350189B (en) * | 2011-08-24 | 2014-02-26 | 福建新大陆环保科技有限公司 | Half-dry low-temperature smoke denitrification system |
| CN105874892B (en) * | 2014-01-20 | 2018-11-13 | 优志旺电机株式会社 | De-smear processing unit |
| CN105874892A (en) * | 2014-01-20 | 2016-08-17 | 优志旺电机株式会社 | Desmearing processing device |
| CN103816782A (en) * | 2014-01-26 | 2014-05-28 | 河北欧美环境工程有限公司 | Photolytic catalytic purification device and corresponding process for treating pharmaceutical waste gas |
| CN105311931A (en) * | 2015-11-17 | 2016-02-10 | 深圳市天得一环境科技有限公司 | Industrial VOC waste gas decomposition purification treatment method and equipment |
| CN105311931B (en) * | 2015-11-17 | 2018-04-13 | 深圳市天得一环境科技有限公司 | Industrial VOCs exhaust gas decomposing, purifying processing method and equipment |
| CN107081036A (en) * | 2017-06-27 | 2017-08-22 | 山东大学深圳研究院 | A kind of UV activation ozone oxidation VOCs dedusting and purifying devices and method |
| CN107081036B (en) * | 2017-06-27 | 2020-08-04 | 山东大学 | Ultraviolet activated ozone oxidation VOCs dust removal purification device and method |
| CN108273371A (en) * | 2017-08-07 | 2018-07-13 | 新大陆科技集团有限公司 | A kind of the industrial combustion process flue gas purifying method and system of double gas circuits |
| CN111732301A (en) * | 2020-06-11 | 2020-10-02 | 山东省淄博生态环境监测中心 | Device and method for treating volatile or semi-volatile organic compounds in sludge |
| CN112191084A (en) * | 2020-10-19 | 2021-01-08 | 新大陆科技集团有限公司 | Photochemical advanced oxidation treatment denitration and demercuration device |
| CN112791561A (en) * | 2021-01-13 | 2021-05-14 | 贵州威顿晶磷电子材料股份有限公司 | Trimethyl phosphite rectification tail gas deodorization method and equipment |
| CN112791561B (en) * | 2021-01-13 | 2022-07-19 | 贵州威顿晶磷电子材料股份有限公司 | Trimethyl phosphite rectification tail gas deodorization method and equipment |
| CN116265044A (en) * | 2021-12-16 | 2023-06-20 | 中国科学院大连化学物理研究所 | Method for treating paraxylene liquid phase oxidation residues |
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Open date: 20070425 |