CN105617824A - Vapor extraction tail gas treatment device - Google Patents
Vapor extraction tail gas treatment device Download PDFInfo
- Publication number
- CN105617824A CN105617824A CN201511011136.3A CN201511011136A CN105617824A CN 105617824 A CN105617824 A CN 105617824A CN 201511011136 A CN201511011136 A CN 201511011136A CN 105617824 A CN105617824 A CN 105617824A
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- China
- Prior art keywords
- gas
- treatment device
- volution
- processing device
- ultraviolet light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a vapor extraction tail gas treatment device which comprises a drying pretreatment system and a photocatalytic oxidation treatment device. The drying pretreatment system is connected with the photocatalytic oxidation treatment device and a prestoring tank through a gas flowmeter and a flow regulation valve; the photocatalytic oxidation treatment device comprises an outer protection shell, a gas inlet, a gas outlet, multiple spiral gas guiding catalytic tubes and ultraviolet light sources; the spiral gas guiding catalytic tubes are arranged at intervals in parallel and made of glass tubes of which the inner surfaces are coated with nano-titanium dioxide photocatalytic films, the center of each spiral gas guiding catalytic tube is provided with one cylindrical ultraviolet light source, and treated gas does spiral motion in the spiral gas guiding catalytic tubes to fully make contact with ultraviolet rays generated by the ultraviolet light sources. The vapor extraction tail gas treatment device can be used for organic tail gas generated in the polluted soil vapor extraction process, a large quantity of organic matter in the extraction tail gas is completely degraded, and meanwhile no secondary pollution is generated.
Description
Technical field
The invention belongs to the remediation contaminated soil field in environment protection, it is related specifically to a kind of gas phase extracting exhaust gas processing device.
Background technology
Soil, as the important component part of ecotope, is one of valuable source of depending on for existence of the mankind. But along with China's industrial economy high speed development and the high-strength effect of human activity, the organic pollutant that a large amount of organic pesticide, chemical fertilizer and industrial production produce enters edatope, thus change soil physico-chemical property, produce to destroy to the local ecosystem, and by the enrichment effect of food chain, human health caused serious harm. Organic pollution of soil problem is increasingly severe, has caused the extensive concern of people, and the reparation of organic pollution of soil is day by day urgent.
In contaminated soil organism recovery technique, gas phase extraction technique is easy to installation operation because of it, the advantages such as on-the-spot environmental disruption is little is widely used, is a kind of effective process technology. But; in existing gas phase extracting soil restoring technology; take active carbon adsorption to remove organic pollutant contained in gas the process of follow-up gas more; although emission gases reaches corresponding environmental protection standard and requirement after absorption; but pollutent has just been transferred in absorbent charcoal carrier by adsorption treatment technology from soil; organic pollutant does not carry out in process process degraded, there is the possibility of very big environmental risk and secondary pollution in the method for this kind of transport disposal.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed to a kind of organic pollution of soil gas phase extracting reparation produces the gas phase extracting exhaust gas processing device of tail gas.
In order to realize above-mentioned purpose, the technical thought that the present invention takes is: the tail gas that soil vapor extraction produces is by, after drying pretreatment device, entering in gas phase extracting exhaust gas processing device and process, and the gas after process is rear discharge up to standard after testing.
Concrete, the tail gas produced through gas phase extracting reparation removed wherein contained moisture and other impurity by moisture eliminator, filter screen process successively before entering exhaust gas processing device; Being filled with unslaked lime in described moisture eliminator, the tail gas that gas phase extracting produces is through moisture eliminator, and wherein contained moisture, with the unslaked lime in device, reaction occurs thus aqueous vapor is separated; Dried gas is through stainless steel filtering net, and its concrete size carries out selecting as required, filters out in gas other large granular impurities that may contain; Pretreated gas regulates through gas meter and flow control valve and reaches stable pneumatic flow and enter in Treatment by Photocatalysis Oxidation device and be further processed, and unnecessary air pressure enters in the pre-storage tank of gas temporary. Wherein the design main purpose of gas meter and flow control valve is to protect photocatalytic oxidation device, prevents normal atmosphere from producing to destroy to spiral air thrust-augmenting nozzle. The pre-storage tank of described gas is that withstand voltage steel cylinder is made.
Above-mentioned Treatment by Photocatalysis Oxidation device is a kind of optically catalytic TiO 2 oxidizing treater, and this device comprises outside protective shell, gas inflow entrance, gas flow outlet, gas diverter, volution gas flow guiding catalysing tube and ultraviolet light source.
In the present invention, the outside protective shell of Treatment by Photocatalysis Oxidation device is cylindrical structural, bottom is provided with gas inflow entrance and gas diverter, top is provided with gas flow outlet, wherein, outside protective shell adopts stainless material, and air inlet/outlet lays respectively at bottom surface and the end face central position of cylindrical structural; Gas is by entering multiple volution water conservancy diversion catalysing tube after part flow arrangement, the heat-resistance high-strength Glass tubing that described spiral stream guidance catalysing tube is coated with nanometer photocatalytic titania film by internal surface is made; All spiral stream guidance catalysing tube centers are all provided with cylindrical ultraviolet light source; Gas produces volution motion in photocatalysis treatment device, abundant and photochemical catalysis pipe and UV contact. What the Treatment by Photocatalysis Oxidation device of the present invention and prior art distinguished is volution gas flow guiding catalysing tube and distribution of light sources form, the design of volution gas flow guiding catalysing tube is the duration of contact in order to fully increase gas and catalyzer, thus extend the whole reaction times, choose nanometer photocatalytic titania film coating simultaneously, the contact specific surface area of gas and catalyzer can be increased, ensure that gas fully reacts in spiral tube.
The present invention has the following advantages:
1, strong adaptability of the present invention, can efficiently remove the organic tail gas that soil vapor extraction produces, when organic concentration is higher in tail gas or the bigger situation of gas flow, the mode of the series connection coupling of multiple Treatment by Photocatalysis Oxidation device or coupling in parallel can be taked to reach the effect of efficient removal;
2, the present invention is simple to operate, it is not necessary to adds any material and can reach process effect;
3, non-secondary pollution of the present invention, the tail gas that gas phase extracting produces can reach harmless discharge after treatment completely, can not produce other objectionable impuritiess.
Accompanying drawing explanation
Fig. 1 is the processing technological flow figure of gas phase extracting exhaust gas processing device provided by the invention;
Fig. 2 is the structural representation of the gas phase extracting exhaust gas processing device of device in the present invention.
In figure, 1, outside protective shell; 2, gas meter; 3, gas diverter; 4, volution gas flow guiding catalysing tube; 5, ultraviolet light source; 6, pre-storage tank; 7, drying pretreatment device.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The present invention provides a kind of gas phase extracting exhaust gas processing device, as depicted in figs. 1 and 2, described gas phase extracting tail gas is first through dry pretreatment system 7, this drying pretreatment system 7 is preferably existing drying tower and filter screen, ordinary student lime moisture eliminator and filter screen, gas phase extracting tail gas first by drying tower, after pass through filter screen. The design of dry pretreatment system 7 is the moisture in order to remove in gas and large granular impurity, prevents from subsequent disposal being impacted, and dry pretreatment system can choose the most common unslaked lime moisture eliminator and filter screen, it is also possible to changes other moisture eliminator into and substitutes. Reaching being made gas flow after pretreatment unit by gas meter and flow control valve after stablizing, then make a gas part flow into Treatment by Photocatalysis Oxidation device by gas diverter, a part enters pre-storage tank 6. Described gas meter and flow control valve be unmatched rear Position Design relation in a device, it is only necessary to ensure to enter the gas flow temperature-controllable of aftertreatment device. The isocon of described gas diverter and water is similar, and these parts can form after carrying out encapsulation process with the tubing of high strength, it is possible to adopts the form of similar isocon. The setting of pre-storage tank 6 is that the air pressure in order to ensure in follow-up volution gas flow guiding catalysing tube is not excessive, is used for storing too fast air-flow, can regulate according to practical situation during concrete enforcement.
Described Treatment by Photocatalysis Oxidation device is as shown in Figure 2; include outside protective shell 1; this outside protective shell is cylindrical, selects stainless steel as material, and gas enters each volution gas flow guiding catalysing tube 4 after entering gas diverter 3 after flow-controlling meter valve 2. Described outside protective shell 1 is cylindrical structural, is provided with gas inflow entrance and gas diverter bottom it, and top is provided with gas flow outlet, and gas inflow entrance, gas flow outlet lay respectively at bottom cylindrical face and end face central position. Described gas diverter and These gases part flow arrangement can adopt identical shunting device, and such as isocon, one end of gas diverter is connected with gas inflow entrance, and the other end connects each volution gas flow guiding catalysing tube 4 respectively. The heat-resistance high-strength Glass tubing that described volution gas flow guiding catalysing tube 4 is coated with nanometer photocatalytic titania film by internal surface is made. This volution gas flow guiding catalysing tube 4 has multiple, spaced and parallel arrangement, and the outlet of its top all connects the gas flow outlet of protecting sheathing. The center of all volution gas flow guiding catalysing tubes 4 is all provided with cylindrical ultraviolet light source 5; Process gas forms volution motion in the volution gas flow guiding catalysing tube 4 of Treatment by Photocatalysis Oxidation device, the UV contact produced with abundant and ultraviolet light source 5. The rugosity of the pipe body of volution gas flow guiding catalysing tube 4, the specific design of helix structure, highly, the thickness of the intensity of light source and catalytic film without specific design, can arrange according to practical application. Tail gas after Treatment by Photocatalysis Oxidation device processes reaches emission standard and directly discharges.
Preferably, the described Treatment by Photocatalysis Oxidation device in the present invention according to the multiple couplings in parallel of physical condition or multiple series connection coupling, can also reach the effect efficiently processed completely.
The above embodiment is only the preferred embodiment lifted for absolutely proving the present invention, and protection scope of the present invention is not limited to this. The equivalent replacement that those skilled in the art do on basis of the present invention or conversion, all within protection scope of the present invention. Protection scope of the present invention is as the criterion with claim book.
Claims (6)
1. a gas phase extracting exhaust gas processing device, it is characterized in that, comprising dry pretreatment system and Treatment by Photocatalysis Oxidation device, described dry pretreatment system is by, after gas meter and flow control valve, connecting Treatment by Photocatalysis Oxidation device and pre-storage tank respectively.
2. gas phase extracting exhaust gas processing device according to claim 1, it is characterised in that, described Treatment by Photocatalysis Oxidation device comprises outside protective shell, gas inflow entrance, gas flow outlet, multiple volution gas flow guiding catalysing tube and ultraviolet light source.
3. gas phase extracting exhaust gas processing device according to claim 2; it is characterized in that; described outside protective shell is cylindrical structural; gas inflow entrance and gas diverter it is provided with bottom it; top is provided with gas flow outlet, and gas inflow entrance, gas flow outlet lay respectively at the outside bottom surface of protective shell, the central position of end face.
4. gas phase extracting exhaust gas processing device according to claim 2, it is characterized in that, described multiple volution spaced and parallel arrangement of gas flow guiding catalysing tube, the Glass tubing being coated with nanometer photocatalytic titania film by internal surface is made, the center of each volution gas flow guiding catalysing tube is all provided with cylindrical ultraviolet light source, process gas forms volution motion in volution gas flow guiding catalysing tube, the UV contact produced with abundant and ultraviolet light source.
5. gas phase extracting exhaust gas processing device according to claim 2, it is characterised in that, comprise the Treatment by Photocatalysis Oxidation device of multiple parallel connection or series connection.
6. gas phase extracting exhaust gas processing device according to claim 1, it is characterised in that, described dry pretreatment system comprises drying tower and filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011136.3A CN105617824A (en) | 2015-12-30 | 2015-12-30 | Vapor extraction tail gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011136.3A CN105617824A (en) | 2015-12-30 | 2015-12-30 | Vapor extraction tail gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105617824A true CN105617824A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511011136.3A Pending CN105617824A (en) | 2015-12-30 | 2015-12-30 | Vapor extraction tail gas treatment device |
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| CN (1) | CN105617824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355402A (en) * | 2018-04-27 | 2018-08-03 | 马鞍山金安环境科技有限公司 | A kind of waste gas dedusting equipment admission gear |
| CN108533367A (en) * | 2018-04-03 | 2018-09-14 | 内江至诚铂业科技有限公司 | A kind of automobile exhaust gas processing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101380483A (en) * | 2008-10-22 | 2009-03-11 | 广州大学 | Photocatalysis air cleaning device |
| CN104056546A (en) * | 2013-12-25 | 2014-09-24 | 天津生态城环保有限公司 | Soil vapor extraction volatile organic pollutant tail gas clarification system |
| CN203999231U (en) * | 2014-07-26 | 2014-12-10 | 山东默锐环保科技有限公司 | A kind of photochemical catalysis ultrafiltration combined water purifying machine |
-
2015
- 2015-12-30 CN CN201511011136.3A patent/CN105617824A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101380483A (en) * | 2008-10-22 | 2009-03-11 | 广州大学 | Photocatalysis air cleaning device |
| CN104056546A (en) * | 2013-12-25 | 2014-09-24 | 天津生态城环保有限公司 | Soil vapor extraction volatile organic pollutant tail gas clarification system |
| CN203999231U (en) * | 2014-07-26 | 2014-12-10 | 山东默锐环保科技有限公司 | A kind of photochemical catalysis ultrafiltration combined water purifying machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533367A (en) * | 2018-04-03 | 2018-09-14 | 内江至诚铂业科技有限公司 | A kind of automobile exhaust gas processing apparatus |
| CN108355402A (en) * | 2018-04-27 | 2018-08-03 | 马鞍山金安环境科技有限公司 | A kind of waste gas dedusting equipment admission gear |
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Application publication date: 20160601 |