CN103962001A - Sulfur dioxide desorbing device based on photo-catalytic oxidation - Google Patents
Sulfur dioxide desorbing device based on photo-catalytic oxidation Download PDFInfo
- Publication number
- CN103962001A CN103962001A CN201410187892.0A CN201410187892A CN103962001A CN 103962001 A CN103962001 A CN 103962001A CN 201410187892 A CN201410187892 A CN 201410187892A CN 103962001 A CN103962001 A CN 103962001A
- Authority
- CN
- China
- Prior art keywords
- sulfur dioxide
- photo
- catalytic oxidation
- light
- catalyzed reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Catalysts (AREA)
Abstract
The invention relates to a sulfur dioxide desorbing device based on photo-catalytic oxidation. A photo-catalytic oxidation channel is fixed inside a black box body; an ultraviolet lamp fixing tube and an ultraviolet lamp are mounted in the center of the photo-catalytic oxidation channel; a photo-catalytic film winds the outside of the ultraviolet lamp fixing tube; a gas inlet is formed in the upper end of the photo-catalytic reaction channel; a channel outlet at the lower end stretches into an absorbing liquid in an absorbing bottle. A photo-catalyst on the photo-catalytic film is excited by ultraviolet light, and then photoproduction hole-electron pairs with a strong oxidation sterilization function are generated; sulfur dioxide is oxidized into sulfur trioxide when passing through the photo-catalytic film, the photo-catalytic film is arranged inside the photo-catalytic oxidation channel and is spirally fixed in a fin type manner, a gas can be in sufficiently contact with and reacted with the photo-catalytic film, a sulfur trioxide absorbing device is arranged at the tail end of the reaction channel, and the absorbing liquid is recycled and reused for preparing sulfuric acid and the like after a certain time. The sulfur dioxide desorbing mechanism provided by the invention is a novel sulfur dioxide purification treatment mechanism, and is remarkable in effect and very high in application value.
Description
Technical field
The present invention relates to a kind of sulfur dioxide gas and remove device, especially a kind of sulfur dioxide removal device of the photochemical catalytic oxidation for pollutant control.
Background technology
Sulfur dioxide pollution main source is vehicle exhaust at present, industrial waste gas etc., power plant's sulfur dioxide (SO2) emissions account for an important part, and current most of power plant has been equiped with complete desulfurizer, and therefore main SO2 emissions derive from the fields such as Chemical Manufacture.And the control of sulfur dioxide is an important step of Air Pollution Control, sulfur dioxide can cause serious acid rain problem, destruction for soil and vegetation is very serious, and a kind of virulent greenhouse gases especially, so the efficient easily sulfur dioxide removal mechanism of row has higher using value.
Disclosed patent has:
A kind of method that removes low-concentration sulfur dioxide in gas of the invention such as Li Nan, Zeng Bizhao of Shangliu Chemical Co., Ltd. Shanghai Huayi Group, the patent No.: 200910049022.6;
2, the method that removes sulfur dioxide in flue gas of the invention such as the Wei Jiaming of CHINA ENFI ENGINEERING CORPORATION, Liu Jun, Li Jianzhou, scholar's Du cap, Xie Qian, the patent No.: 201110054534.9;
3, a kind of device that removes sulfur dioxide in flue gas of the invention such as the Li Shunbao of Ningbo JinYuanDong Industry Science Co., Ltd, Xiang Yuqiao, Peng Bencheng, the patent No.: 201010290578.7;
4, a kind of desulfurization liquor of the Zhu Zhengming of Shanghai Gubao Industry Co., Ltd. invention removes the method for sulfur dioxide, the patent No.: 201010177868.0 in flue;
5, a kind of method that simultaneously removes SO 2 in waste gas and nitrogen oxide of the invention such as the imperial Hunan plough of East China University of Science, Li Wei, Tao Lisan, Yuan Weikang, the patent No.: 200710172547.X;
6, the absorbent that removes and reclaim sulfur dioxide from gaseous mixture of the invention such as the Xiao Jiugao of Xihua Chemical Engineering Inst., Chengdu, Wang Zhihe, Cao Jing, Chen Guangxiang, the patent No.: 200710048743.6;
7, a kind of method and device that removes low-concentration sulfur dioxide in flue gas of the Liu Youzhi of Northcentral University, the invention of Jiang Xiu equality, the patent No.: 201010568240.3.
Above-mentioned patent majority is studied invention taking power plant's sulfur dioxide removal as main, relates generally in addition the developmental research of desulfurizing agent, is based on removing of low-concentration sulfur dioxide more.
Sulfur dioxide is one of important atmosphere pollution.In in life or industrial combustion process, all can produce form waste gas of sulfur dioxide atmosphere pollution, in air, sulfur dioxide level raises and tends to form the harsh weather phenomenons such as acid rain, sulfur dioxide be a kind of colourless, there is irritating gas, human body eye and respiratory mucosa are had to strong impulse effect.A large amount of suctions can give rise to diseases, and therefore the control of sulfur dioxide gas are had to very strong necessity, adopt the efficient easily method of row to carry out the research emphasis place that sulfur dioxide gas control is atmosphere pollution control.Because sulfur dioxide is a kind of pernicious gas, there is toxicity and can cause the environmental problems such as acid rain, so it is efficiently removed and has very high necessity, the present invention adopts photocatalysis oxidation technique to carry out sulfur dioxide removal, it is a kind of novel theory that removes, and will remove afterproduct and collect utilization, form available industrial goods.For device involved in the present invention, photochemical catalytic oxidation sulfur dioxide removal matching requirements can efficiently thoroughly remove sulfur dioxide, and necessary device for absorbing tail gas need be set, for the sulfur dioxide product of realizing purification conversion, corresponding product receiving system need to be set, and can carry out easily recycling replacing.
Summary of the invention
The present invention will provide a kind of sulfur dioxide removal device based on photochemical catalytic oxidation, this device adopts photocatalysis oxidation technique to carry out the oxidation removal of sulfur dioxide, have effective, the advantage such as low that consumes energy, the control to sulfur dioxide in environment and improvement have very high using value.
For achieving the above object, technical scheme of the present invention is: a kind of sulfur dioxide removal device based on photochemical catalytic oxidation, comprise reactor, absorption bottle and absorption liquid, be characterized in: reactor is made up of light-catalyzed reaction passage, uviol lamp stationary pipes, uviol lamp, photocatalysis membrana, light-catalyzed reaction passage is fixed in black casing, uviol lamp stationary pipes and uviol lamp are equipped with in light-catalyzed reaction channel center, uviol lamp stationary pipes is wound around photocatalysis membrana outward, light-catalyzed reaction passage upper end is provided with air inlet, and the channel outlet of lower end stretches into the absorption liquid in absorption bottle.
Light-catalyzed reaction passage upper end is provided with the coniform reaction channel slowing down for sulfur dioxide gas rectification.
Photocatalysis membrana is finned photocatalysis membrana, and finned photocatalysis membrana is spirally wrapped around outside uviol lamp stationary pipes, and its helical pitch is between 5-10cm, and external diameter is than the little 2cm of light-catalyzed reaction outside diameter of passage.
Absorption bottle connects two for changing the arm of liquid, and wherein, an arm is connected and changed the outlet of liquid pipe by vavuum pump, and the import of liquid pipe is changed in another root arm connection.
The gas place that absorption bottle top storage absorption liquid afterbody overflows connects the air inlet of light-catalyzed reaction passage by pipeline.
The invention has the beneficial effects as follows:
The present invention relates to a kind of sulfur dioxide removal technology and device based on photochemical catalytic oxidation, adopt photocatalysis technology to carry out catalytic oxidation to sulfur dioxide gas, make it to change into the high sulphides such as sulfur trioxide, thereby be convenient to collection and treatment, adopt circulating processing mode, purified product is absorbed to recycling, have that effect is good, low power consumption and other advantages.The today going from bad to worse for environmental quality, atmosphere pollution control becomes extremely urgent problem, the device of the present invention's design has very high adaptability for the concentration of sulfur dioxide, application scenario is extensive, can be applied to general industrial harmful gas and remove, also can be applicable to power-plant flue gas sulfur dioxide removal.And have the following advantages:
Reaction unit has higher air-tightness to ensure, channel of reactor is fixed in black casing and reacts, and can prevent that ultraviolet light leakage from damaging.
Reaction photoactivation film possesses higher surface area and sensitive surface, has ensured that sulfur dioxide gas can fully contact and react with it, increases the time of staying of sulfur dioxide gas in passage, realizes the fully target of reaction, and sulfur dioxide is fully transformed.
Purification product absorption plant is set, adopts absorption liquid to absorb, absorption liquid afterbody overflows a small amount of gas and passes into photocatalysis oxidation reaction feeder connection and carry out circularly purifying processing.
There is absorption liquid easy to use, simple in structure and reclaim and change mechanism.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is finned spiral fixed light catalytic membrane schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of sulfur dioxide removal device based on photochemical catalytic oxidation, comprises air inlet 1, light-catalyzed reaction passage 2, uviol lamp stationary pipes 3, uviol lamp 4, photocatalysis membrana 5, reactor, absorption bottle and absorption liquid 6, vavuum pump 7.
Light-catalyzed reaction passage 2, uviol lamp stationary pipes 3, uviol lamp 4, photocatalysis membrana 5 anabolic reaction devices, light-catalyzed reaction passage 2 is fixed in black casing, uviol lamp stationary pipes 3 and uviol lamp 4 are equipped with in light-catalyzed reaction passage 2 centers, the outer winding photocatalysis membrana 5 of uviol lamp stationary pipes 3, light-catalyzed reaction passage 2 upper ends are provided with air inlet 1, and the channel outlet of lower end stretches into the absorption liquid 6 in absorption bottle.Light-catalyzed reaction passage 2 upper ends are provided with the coniform reaction channel slowing down for sulfur dioxide gas rectification.Absorption bottle connects two for changing the arm of liquid, and wherein, an arm is connected and changed liquid pipe outlet 9 by vavuum pump 7, and liquid pipe import 8 is changed in another root arm connection.
The gas place that absorption bottle top storage absorption liquid afterbody overflows connects the air inlet 1 of light-catalyzed reaction passage 2 by pipeline.
This device is mainly divided into purified treatment part and tail gas absorbs processing and two parts of recycling, sulfur dioxide gas is slowed down and is entered light-catalyzed reaction passage 2 by coniform reaction channel entrance rectification by air inlet 1, gas is owing to being subject to being the obstruction of the fixing photocatalysis membrana of finned spiral 5, in passage, slowly flow, and fully contact with the photochemical catalyst on photocatalysis membrana 5, photochemical catalyst on photocatalysis membrana 5 is owing to being subject to uviol lamp 4 and sending the excitation of ultraviolet light, produce a large amount of light induced electron-holes pair, due to its strong oxidizing property having, sulfur dioxide gas is fully oxidized, make it to generate high valence state sulfide, as long as sulfur trioxide gas, sulfur dioxide enters absorption bottle from channel outlet after fully reacting, contact with absorption liquid 6, because sulfur trioxide is soluble in water, so product is absorbed by liquid absorption, generating the product such as sulfuric acid can be for industrial use etc.The a small amount of sulfur dioxide gas not being purified is back to light-catalyzed reaction channel entrance by absorption bottle outlet and carries out secondary response again.
This device is provided with absorption liquid and changes mechanism on absorption liquid is processed, and two arms of absorption bottle connection, for changing liquid, are tending towards saturated absorption liquid and recycle by vavuum pump 7 sucking-offs, and new liquid flows into military service by changing the import of liquid pipe.
As shown in Figure 2, photocatalysis membrana 5 is finned photocatalysis membrana, and finned photocatalysis membrana is spirally wrapped around outside uviol lamp stationary pipes 3, and its helical pitch is between 5-10cm, and external diameter is than the little 2cm of light-catalyzed reaction passage 2 external diameter.
Photochemical catalytic oxidation passage 2 adopts particular design, relate generally to a kind of finned spiral fixed light catalytic membrane fixed form, photochemical catalytic oxidation passage 2 centers are uviol lamp stationary pipes 3, the fixing photocatalysis membrana 5 of finned spiral is wrapped in outside uviol lamp stationary pipes 3 twist, its helical pitch is according to gas circulation situation between 5-10cm, and to ensure fully contacting of gas and photocatalysis membrana, photocatalysis membrana adopts finned, external diameter is as the criterion with outside diameter of passage-2cm, is convenient for changing.
Case study on implementation
The sulfur dioxide removal device of the present invention's design has completed related experiment in laboratory, adopt nano titanium oxide as photochemical catalyst, adopt simulative power plant SO 2 from fume concentration and temperature, uviol lamp wavelength is 365nm, experimental result shows, the oxidation effectiveness of sulfur dioxide is very obvious, and product can utilize through goods such as post-processed extracting sulfuric acids.
Estimate feasibility and prospect that invention is applied
The present invention designs a kind of sulfur dioxide removal mechanism, adopt photocatalysis oxidation technique to carry out the oxidation removal of sulfur dioxide, this technology is a kind of novel sulfur dioxide pollution gas treatment theory, adaptability for sulfur dioxide concentration and temperature is better, can be widely used in general industry exhaust-gas treatment, also can be applied to removing of sulfur dioxide in coal-fired plant flue gas.In addition, the present invention is simple in structure, and photochemical catalytic oxidation successful is very abundant for the oxidation of sulfur dioxide, after oxidation processes, product is carried out to recycling, further the industrial goods such as extracting sulfuric acid.
As can be seen here, the present invention has very high science, has very high application necessity day by day severe today in air quality, adopts advanced photocatalysis oxidation technique based on it, and application prospect is boundless.
Claims (5)
1. the sulfur dioxide removal device based on photochemical catalytic oxidation, comprise reactor, absorption bottle and absorption liquid (6), it is characterized in that: described reactor is by light-catalyzed reaction passage (2), uviol lamp stationary pipes (3), uviol lamp (4), photocatalysis membrana (5) composition, light-catalyzed reaction passage (2) is fixed in black casing, uviol lamp stationary pipes (3) and uviol lamp (4) are equipped with in light-catalyzed reaction passage (2) center, the outer photocatalysis membrana (5) that is wound around of uviol lamp stationary pipes (3), light-catalyzed reaction passage (2) upper end is provided with air inlet (1), the channel outlet of lower end stretches into the absorption liquid (6) in absorption bottle.
2. the sulfur dioxide removal device based on photochemical catalytic oxidation according to claim 1, is characterized in that: described light-catalyzed reaction passage (2) upper end is provided with the coniform reaction channel slowing down for sulfur dioxide gas rectification.
3. the sulfur dioxide removal device based on photochemical catalytic oxidation according to claim 1, it is characterized in that: described photocatalysis membrana (5) is finned photocatalysis membrana, finned photocatalysis membrana is spirally wrapped around outside uviol lamp stationary pipes (3), its helical pitch is between 5-10cm, and external diameter is than the little 2cm of light-catalyzed reaction passage (2) external diameter.
4. the sulfur dioxide removal device based on photochemical catalytic oxidation according to claim 1, it is characterized in that: described absorption bottle connects two for changing the arm of liquid, wherein, an arm is connected and is changed liquid pipe outlet (9) by vavuum pump (7), and liquid pipe import (8) is changed in another root arm connection.
5. the sulfur dioxide removal device based on photochemical catalytic oxidation according to claim 1, is characterized in that: the gas place that described absorption bottle top storage absorption liquid afterbody overflows connects the air inlet (1) of light-catalyzed reaction passage (2) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187892.0A CN103962001A (en) | 2014-05-07 | 2014-05-07 | Sulfur dioxide desorbing device based on photo-catalytic oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187892.0A CN103962001A (en) | 2014-05-07 | 2014-05-07 | Sulfur dioxide desorbing device based on photo-catalytic oxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103962001A true CN103962001A (en) | 2014-08-06 |
Family
ID=51232290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410187892.0A Pending CN103962001A (en) | 2014-05-07 | 2014-05-07 | Sulfur dioxide desorbing device based on photo-catalytic oxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103962001A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740744A (en) * | 2015-04-02 | 2015-07-01 | 无锡市人民医院 | Spiral blade type carbon dioxide adsorption tank |
| CN107951975A (en) * | 2017-12-04 | 2018-04-24 | 安徽和济堂中药饮片有限公司 | Sulfur dioxide removal method and system in a kind of prepared slices of Chinese crude drugs |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612379Y (en) * | 2003-04-18 | 2004-04-21 | 武汉大学 | Air-purifying Device |
| CN102350191A (en) * | 2011-07-14 | 2012-02-15 | 上海电力学院 | Method for combined removal of SO2/NOx/Hg in flue gas by using photocatalysis and apparatus used therein |
-
2014
- 2014-05-07 CN CN201410187892.0A patent/CN103962001A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612379Y (en) * | 2003-04-18 | 2004-04-21 | 武汉大学 | Air-purifying Device |
| CN102350191A (en) * | 2011-07-14 | 2012-02-15 | 上海电力学院 | Method for combined removal of SO2/NOx/Hg in flue gas by using photocatalysis and apparatus used therein |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740744A (en) * | 2015-04-02 | 2015-07-01 | 无锡市人民医院 | Spiral blade type carbon dioxide adsorption tank |
| CN104740744B (en) * | 2015-04-02 | 2017-11-21 | 无锡市人民医院 | Helical blade type carboloy dioxide canister |
| CN107951975A (en) * | 2017-12-04 | 2018-04-24 | 安徽和济堂中药饮片有限公司 | Sulfur dioxide removal method and system in a kind of prepared slices of Chinese crude drugs |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101352644B (en) | Wet flue gas denitration technique for nitrite recovery | |
| CN103657368B (en) | A kind of simultaneous SO_2 and NO removal demercuration dry-method fume gas purification method and device | |
| CN100534586C (en) | Flue gas combined desulfurization and denitration method | |
| CN106955589B (en) | Boiler flue gas simultaneous desulfurization and denitrification device | |
| CN102512927A (en) | Integrated flue gas desulfurizing and denitrating purification system and purification technology for same | |
| CN103611419A (en) | Method for removing SO2 and NOX in combustion coal flue gas through corona discharge and liquid phase oxidation | |
| CN202620999U (en) | Desulfurization and denitration integrated flue gas cleaning system | |
| CN106621796A (en) | Method and device for simultaneously removing carbonyl sulfide and carbon disulfide | |
| CN210035516U (en) | Hazardous waste incineration flue gas treatment device | |
| CN104801160A (en) | Method for reducing nitrogen oxides in flue gas of medium and small sized industrial coal burning boiler through combination with wet-method sulfur removing technology | |
| CN105797562A (en) | Two-section type double-ammonia-process integrated desulfurization and denitration system for coking flue gas | |
| WO2014040541A1 (en) | Flue gas wet oxidation integrated desulfurization and denitration method | |
| CN104147909B (en) | A kind of system and method based on photochemical catalytic oxidation denitration demercuration and deep desulfuration | |
| CN103962001A (en) | Sulfur dioxide desorbing device based on photo-catalytic oxidation | |
| CN104772029A (en) | Coupled double-region type high-efficiency flue gas mercury recovery device and application thereof | |
| CN108837694B (en) | Method for removing zero-valent mercury and fixing ionic mercury from flue gas | |
| CN108187474B (en) | Desulfurization and denitrification device and desulfurization and denitrification method | |
| CN202185259U (en) | Integrated fume purification device based on heterogeneous Photo-Fenton | |
| CN107715670A (en) | A kind of method of flue gas desulfurization collaboration denitration by-product HAS | |
| CN209138348U (en) | A kind of founding waste stack desulfurizing tower | |
| CN209317409U (en) | A kind of flue gas desulfurization and denitrification integrated apparatus | |
| CN203829902U (en) | Pyrolysis denitration system device capable of achieving white smoke concentration less than 50 milligrams | |
| CN112642277A (en) | Cremation machine tail gas treatment system | |
| CN205760627U (en) | A kind of hydrogen peroxide low-temp desulfurization denitrating system | |
| CN104307330B (en) | A kind of method absorbing nitrogen oxides of exhaust gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |