CN203002191U - Tubular reactor for waste gas degradation by ultraviolet light - Google Patents
Tubular reactor for waste gas degradation by ultraviolet light Download PDFInfo
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- CN203002191U CN203002191U CN201220492726.8U CN201220492726U CN203002191U CN 203002191 U CN203002191 U CN 203002191U CN 201220492726 U CN201220492726 U CN 201220492726U CN 203002191 U CN203002191 U CN 203002191U
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- discharge tube
- tubular reactor
- waste gas
- tubular
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Abstract
本实用新型涉及废气净化处理技术，旨在提供一种紫外光降解废气的管式反应器。该反应器包括管式的壳体，壳体两端分别设废气进口和净化气出口；还包括置于壳体内的UV放电管模块，UV放电管模块共有n个，相邻UV放电模块轴线互相垂直且间隔设置，与壳体构成光解舱；所述UV放电管模块由UV放电管与包覆于UV放电管外部的套管构成，在通电后能发射主波长为184.9 nm或253.7 nm的紫外光。本实用新型污染物净化效率高，无需添加任何化学试剂，适应范围广，投资费用低，运行成本低，适合于工程应用。
The utility model relates to waste gas purification treatment technology and aims to provide a tubular reactor for ultraviolet light degradation of waste gas. The reactor includes a tubular shell, and the two ends of the shell are respectively provided with an exhaust gas inlet and a purified gas outlet; it also includes a UV discharge tube module placed in the shell. There are n UV discharge tube modules in total, and the axes of adjacent UV discharge modules are mutually Vertically and at intervals, it forms a photolysis chamber with the housing; the UV discharge tube module is composed of a UV discharge tube and a sleeve covering the outside of the UV discharge tube, and can emit light with a dominant wavelength of 184.9 nm or 253.7 nm after power-on. ultraviolet light. The utility model has high pollutant purification efficiency, does not need to add any chemical reagents, has wide application range, low investment cost and low operation cost, and is suitable for engineering application.
Description
Technical field
The utility model relates to a kind of tubular reactor of ultraviolet degradation waste gas, particularly a kind of tubular reactor for degraded VOC and foul gas.
Background technology
Atmosphere pollution is one of environmental problem of giving prominence to the most at present, estimates according to the World Health Organization, and global approximately 1,000,000,000 people's health are subject to the threat of atmosphere pollution, and annual approximately 2,000,000 people are dead too early because atmosphere pollution causes the whole world, and wherein China reaches more than 60 ten thousand people.Poisonous and harmful substance in atmosphere enters human body and ecological environment by breathing, sedimentation, gives health, ecological safety and global economy development harm.China's atmosphere had been the trend of compound pollution in recent years.Atmosphere quality entered generally take multi-pollutant coexist, multi-pollutant stack, multi-scale coupling, many PROCESS COUPLING, multimedium impact be as compound atmosphere pollution stage of feature.The air environmental pollution situation is very severe, and volatile organic waste gas and foul gas pollute has become a kind of typical environmental hazard that generally acknowledge countries in the world.
The main method commonly used of processing at present volatile organic waste gas and foul gas has absorption method, absorption process, firing method, bioanalysis etc.Absorption method is to utilize the loose structure of adsorbent, with the contaminant trap in waste gas, adsorbent is with carbonaceous (as active carbon, fiber charcoal etc.) in the majority, be suitable for the waste gas that moisture content is low, concentration is low, have the advantages such as the efficient of removal is high, technical maturity, process problem but relate to saturated adsorption agent desorption and regeneration, need to unite with additive methods such as condensation, oxidations.Absorption process is to adopt low volatility or nonvolatile solvent to carry out washing absorption to waste gas, thereby pollution abatement, absorbent can be water, soda acid, mineral oil and hydrocarbon, and equipment one-time investment expense is low, but the useless absorption liquid after absorbing needs again to process, and easily produces secondary pollution.Firing method is to utilize high temperature (500～800 ℃, after using catalyst, temperature can be down to 350～500 ℃), and in 0.3～0.5s oxidation Decomposition in the time, catabolite is CO with organic exhaust gas
2And H
2O relates to sulfur-bearing, chlorine, nitrogen compound, can produce SO
2, HCl, NO
X, be suitable for processing the waste gas that pollutant levels are high, toxicity is large, have the characteristics such as efficient is high, oxidation is thorough, but after oxidation, there are the pollution risks such as bioxin in waste gas, use catalyst easily by sulphur, fluorine poisoning.Bioanalysis is to utilize microorganism that contaminant degradation in waste gas is CO
2, H
2The product that O etc. are nontoxic, the characteristics such as low because of its disposal cost, that secondary pollution is little, becoming a technology of promoting rapidly at the exhaust emission control field, especially at low concentration, have more advantage in administering than the easily biological-degradable organic exhaust gas of atm number and foul gas.Yet, for those hydrophobicity difficult for biological degradation gaseous contaminants (hydro carbons, chloride hydro carbons etc.), due to its intrinsic physicochemical characteristic, adopt bioanalysis to be difficult to obtain comparatively desirable removal effect.
Therefore, research and develop that a kind of purification efficiency is high, investment and low, stable, safe and reliable volatile organic waste gas and foul gas cleaning device and the treatment process thereof of operating cost, significant and practical value.
The utility model content
For overcoming many weak points of conventional waste gas treatment equipment and technique thereof, the utility model proposes a kind of high energy UV (ultraviolet light) degraded waste gas tubular reactor and method thereof.
The technical solution scheme that the utility model is following:
A kind of tubular reactor of ultraviolet degradation waste gas is provided, comprises the housing of tubular type, exhaust gas inlet and clean gas outlet are established respectively in housing two ends; Also comprise the UV discharge tube module that is placed in housing, total n of UV discharge tube module, adjacent UV discharge module axis orthogonal and interval arranges, and consists of the photodissociation cabin with housing; Described UV discharge tube module is made of UV discharge tube and the sleeve pipe that is coated on UV discharge tube outside, can launch the ultraviolet light that dominant wavelength is 184.9nm or 253.7nm after energising.
In the utility model, tubular reactor has at least 3 groups tubular shell arranged side by side, and the exhaust gas inlet at its two ends is connected connection separately with clean gas outlet; The arrival end of every group of tubular shell also is provided with flow control valve.
In the utility model, the axis of described UV discharge tube module is perpendicular to the axis of tubular shell, and the axis of adjacent UV discharge tube module is mutually vertical.
In the utility model, the spacing of two adjacent groups UV discharge tube module is 200～600mm.
In the utility model, the sleeve pipe of the described UV of being coated on discharge tube outside is quartz glass, and its thickness is 2～5mm.
In the utility model, the inwall of described housing has the surface texture through mirror finish or coating film treatment.
The method that the utility model is processed waste gas comprises the following steps:
(1) give the energising of UV discharge tube module, discharging dominant wavelength is the ultraviolet light of the independent or mixing of 184.9nm or 253.7nm;
(2) pending waste gas is passed into exhaust gas inlet, waste gas streams is discharged by clean gas outlet behind the photodissociation cabin of series connection; In the photodissociation cabin: dominant wavelength is that the ultraviolet light of 253.7nm makes the contaminant molecule bond fission or becomes excited state, can penetrate the cell membrane of bacterium in waste gas or virus, gives the nucleic acid injury, makes cell lose fertility; Dominant wavelength is that the ultraviolet light of 184.9nm makes the contaminant molecule bond fission or becomes excited state, makes O
2Molecular breakdown generates active oxygen O* and O
2And then generation ozone O
3, and make H
2The O molecule produces Hydroxyl radical HO, and then forms UV/O
3/ HO optical excitation oxidation system enlarges single photooxidation and removes organic scope, and pollutant finally is decomposed into nontoxic CO
2, H
2The O product, thus waste gas is purified.
The beneficial effects of the utility model are:
(1) pollutant purification efficient is high: can efficiently remove foul gas, volatile organic matter (VOCs), as H
2S, NH
3, the pollutants such as thio-alcohol, thioether class, benzene homologues, but the discharging of the tail gas stably reaching standard after purification.
(2) wide accommodation: in temperature-30～95 ℃, humidity 30～98%, the environment such as pH2～13 all can work.Purification process need not to add any material and participates in chemical reaction, has avoided problem of secondary pollution from the source.
(3) investment cost is low: reactor assembly is simple in structure, is installed on the waste gas pipeline road, consists of a conveyance conduit part, without independent waste gas treatment equipment, need not to configure Auxiliary Power Unit, and investment cost is low.
(4) operating cost is low: reactor is a pipeline part, and SR falls extremely low, and Non-energy-consumption need not personal management and regular maintenance, only needs to make regular check on.
(5) being suitable for engineering uses: reactor consists of more than more than 3 groups and 3 groups, and every group of tubular reactor established flow control valve, is connected in the waste gas pipeline road after parallel connection.Can regulate each exhaust gas flow and pipeline enclosure pressure balance, realize simultaneously placing an order in running status and organize maintenance in turn.Reactor can carry out process parameters design according to characteristics such as exhaust gas flow, composition, concentration, can realize the processing of multicomponent Multi-grade exhaust gas, has solved preferably other photolysis devices less because of throughput, can only carry out the difficulties such as experimental study and mechanism research.
Description of drawings
Fig. 1 is the tubular reactor system layout drawing;
Fig. 2 is the structural representation of tubular reactor.
Reference numeral in figure: 1 is trunk line, and 2 is tubular reactor, and 3 is flow control valve, and 4 is housing, and 5～12 is UV discharge tube module, and 13 are the photodissociation cabin, and 14 is the UV discharge tube, and 15 is quartz socket tube.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Degraded waste gas mechanism of the present utility model is: under the irradiation of ultraviolet light beam, the organic pollution in waste gas absorbs photon energy to be made molecular scission or becomes excited state, the O in waste gas
2O* (active oxygen) and O that the molecule absorption photon energy generates
2In conjunction with producing ozone O
3, the H in waste gas
2O molecule absorption photon energy produces Hydroxyl radical HO, forms UV/O
3/ HO optical excitation oxidation system, this will be conducive to enlarge single photooxidation and remove organic scope, and pollutant finally is decomposed into nontoxic CO
2, H
2The products such as O, thus waste gas is purified.
In the present embodiment (Fig. 1,2), tubular reactor 2 is by reactor shell 4 and be located at its inner UV discharge tube module 5～12 and form, the axial space vertical interlaced of adjacent two UV discharge tube modules arranges and consists of a photodissociation cabin 13 with housing 4, can realize that Multi-grade exhaust gas processes.UV discharge tube module is made of UV discharge tube 14 and the quartz socket tube 15 that is coated on UV discharge tube 14 outsides, can launch the ultraviolet light that dominant wavelength is 184.9nm or 253.7nm after energising, make photodissociation cabin 13 be subject to the UV-irradiation of identical or different wavelength, can realize the multicomponent exhaust-gas treatment.
Tubular reactor in Fig. 1 has the tubular shell structure of three groups of parallel connections, and exhaust gas inlet end separately all is connected to the trunk line 1 of waste gas, and the housing 4 of every group of tubular type is all established flow control valve 3, is connected in the waste gas pipeline road after parallel connection.
The housing 4 of tubular reactor 2 adopts the manufacturing of high-quality stainless steel materials, and seam adopts welding, and exhaust gas inlet, clean gas outlet, UV discharge tube module installing port, exhaust gas sampling mouth etc. locate to carry out encapsulation process, prevents from that ultraviolet light from leaking to be detrimental to health.The inner wall surface of housing 4 is made mirror finish (but also plated film) and is processed, and strengthens the reflection of light ability, has improved optical energy utilization efficiency.
In the present embodiment, described UV discharge tube 5-10 adopts ultra high power low pressure UV discharge tube, and UV discharge tube 11,12 adopts high power low pressure UV discharge tube.Described quartz socket tube 15 adopts the thick quartz glass of 2～5mm.
In the present embodiment, it is the 184.9nm UV-irradiation that described photodissociation cabin 13 leading portions, stage casing are in dominant wavelength, and the contaminant molecule of photodissociation cabin 13 leading portions of flowing through absorbs photon energy, and the molecular chemistry bond fission occurs or become excited state; O in waste gas
2O* (active oxygen) and O that the molecule absorption photon energy generates
2In conjunction with producing ozone O
3H in waste gas
2The O molecule is received photon energy and is produced Hydroxyl radical HO.The flow through waste gas in 13 stage casings, photodissociation cabin or the emission molecule of excited state are at UV/O
3Further purify under the effect of/HO optical excitation oxidation system.
In the present embodiment, it is 253.7 UV-irradiations that described photodissociation cabin 13 latter ends are in wavelength, after purifying, on ultraviolet bacterium, nucleic acid (DNA) damage of virus in penetrating lower tail gas, cell loses fertility to tail gas stream, thereby reaches the effect of sterilizing through photodissociation cabin 13 latter ends.
The advantage of described high energy ultraviolet degradation waste gas tubular reactor is that purification efficiency is high, the scope that conforms is wide, need not to add any chemical agent, without independent waste gas treatment equipment, need not to configure Auxiliary Power Unit, non-secondary pollution, not independent land occupation, the investment operating cost is low, stable, need not personal management and regular maintenance, only needs make regular check on.Can carry out the maintenance in turn of list group under running status, and realize the processing of multicomponent Multi-grade exhaust gas.
Below the utility model high energy ultraviolet degradation waste gas tubular reactor as follows in Zhejiang chemical company test situation:
Zhejiang drugmaker sewage plant volatilization waste gas situation such as following table 1.
Table 1 Zhejiang drugmaker sewage plant waste gas situation summary sheet
The experimental rig important technological parameters is as follows:
Exhaust gas flow: 1000m
3/ h
Effective dimensions:
Intensity of illumination: 3200 μ W/cm
2
Reactor quantity: 3 groups
Single group reaction device discharge tube module number: 16 covers, every discharge tube power 36W.
Discharge tube type: UV discharge tube 5-10 adopts ultra high power low pressure UV discharge tube, launches main long 184.9nm ultraviolet light.Discharge tube 11,12 adopts high power low pressure UV discharge tube, launches main long 253.7nm ultraviolet light.
Discharge tube axis spacing: adjacent discharge tube axis spacing 300mm.
Casing-type: quartz socket tube 15 adopts the thick quartz glass of 2mm.
The device case material: S304 stainless steel, inner surface adopt mirror finish to process, and outer surface adopts the ball blast blasting treatment.
Experimental rig is operation in continuous 6 months under the normal temperature and pressure state, and medial humidity is 70%, and exhaust gas flow is 1000m
3/ h, the methyl mercaptan clearance reaches more than 75%, and the methyl sulfide clearance reaches more than 82%, and the H2S average removal rate reaches clearance more than 96%, and exhaust emissions reaches " emission standard for odor pollutants " GB14554-1993 emission request.
By above-mentioned example as seen, the described tubular ultraviolet light degraded of this case utility model waste gas reaction device, have simple in structure, easy for installation, purification efficiency is high, the investment operating cost is low, stable, can realize running status maintenance, can process simultaneously the advantage such as many components waste gas, future in engineering applications is wide.
Claims (6)
1. the tubular reactor of a ultraviolet degradation waste gas comprises the housing of tubular type, and exhaust gas inlet and clean gas outlet are established respectively in housing two ends; It is characterized in that, also comprise the UV discharge tube module that is placed in housing, total n of UV discharge tube module, adjacent UV discharge module axis orthogonal and interval arranges, and consists of the photodissociation cabin with housing; Described UV discharge tube module is made of UV discharge tube and the sleeve pipe that is coated on UV discharge tube outside, can launch the ultraviolet light that dominant wavelength is 184.9 nm or 253.7 nm after energising.
2. tubular reactor according to claim 1, is characterized in that, tubular reactor has at least 3 groups tubular shell arranged side by side, and the exhaust gas inlet at its two ends is connected connection separately with clean gas outlet; The arrival end of every group of tubular shell also is provided with flow control valve.
3. tubular reactor according to claim 1, is characterized in that, the axis of described UV discharge tube module is perpendicular to the axis of tubular shell.
4. the tubular reactor described according to claim 1 to 3 any one, is characterized in that, the spacing of two adjacent groups UV discharge tube module is 200 ~ 600 mm.
5. the tubular reactor described according to claim 1 to 3 any one, is characterized in that, the sleeve pipe of the described UV of being coated on discharge tube outside is quartz glass, and its thickness is 2 ~ 5 mm.
6. the tubular reactor described according to claim 1 to 3 any one, is characterized in that, the inwall of described housing has the surface texture through mirror finish or coating film treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220492726.8U CN203002191U (en) | 2012-09-22 | 2012-09-22 | Tubular reactor for waste gas degradation by ultraviolet light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220492726.8U CN203002191U (en) | 2012-09-22 | 2012-09-22 | Tubular reactor for waste gas degradation by ultraviolet light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203002191U true CN203002191U (en) | 2013-06-19 |
Family
ID=48593827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220492726.8U Expired - Lifetime CN203002191U (en) | 2012-09-22 | 2012-09-22 | Tubular reactor for waste gas degradation by ultraviolet light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203002191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824830A (en) * | 2012-09-22 | 2012-12-19 | 浙江工业大学 | Tubular reactor and method for degrading waste gases with ultraviolet (UV) |
| CN105080305A (en) * | 2014-04-25 | 2015-11-25 | 新大陆科技集团有限公司 | Gas deodorizing and purifying device |
-
2012
- 2012-09-22 CN CN201220492726.8U patent/CN203002191U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824830A (en) * | 2012-09-22 | 2012-12-19 | 浙江工业大学 | Tubular reactor and method for degrading waste gases with ultraviolet (UV) |
| CN102824830B (en) * | 2012-09-22 | 2015-09-23 | 浙江工业大学 | The tubular reactor of ultraviolet degradation waste gas and method thereof |
| CN105080305A (en) * | 2014-04-25 | 2015-11-25 | 新大陆科技集团有限公司 | Gas deodorizing and purifying device |
| CN105080305B (en) * | 2014-04-25 | 2018-03-09 | 新大陆科技集团有限公司 | A kind of eliminating malodours from gases purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |