CN104258728A - Device for flash treatment of volatile organic waste gases - Google Patents
Device for flash treatment of volatile organic waste gases Download PDFInfo
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- CN104258728A CN104258728A CN201410535146.6A CN201410535146A CN104258728A CN 104258728 A CN104258728 A CN 104258728A CN 201410535146 A CN201410535146 A CN 201410535146A CN 104258728 A CN104258728 A CN 104258728A
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Abstract
The invention discloses a device for flash treatment of volatile organic waste gases. The device comprises a pretreatment device, a microwave reactor and an absorption device, wherein the microwave reactor comprises a barrel assembly as well as at least one group of magnetron and waveguide assembly connected with the barrel assembly; the barrel assembly comprises an inner barrel and an outer barrel; each magnetron is communicated with the outer barrel through each waveguide after being communicated with each waveguide; a gas delivery pipe which comes from an online monitor for volatile organic compounds is communicated with a lower gas inlet of the inner barrel. According to the device, the structure that the inner barrel and the outer barrel are combined is adopted, the at least one magnetron and the at least one waveguide are arranged, and a microwave flash energizing catalysis method is adopted during working, so that high-concentration volatile organic waste gases can be treated, low-concentration volatile organic gases can also be treated under the condition that temperatures of the organic gases are much lower than the catalytic combustion temperature by the aid of the catalytic property of microwaves and the adsorption of a catalyst, and the device has the characteristics that the device is high in purification efficiency, low in energy consumption and free of secondary pollution.
Description
Technical field
The present invention relates to the device of the multiple volatile organic waste gas of a kind of flash process, belong to chemical industry and field of Environment Protection.
Background technology
At present, because haze weather has a strong impact on China's residents ' health, and the discharge of the formation of haze and volatile organic pollutant is tied in a hundred and one ways.The Treatment process that common are machine volatility waste gas mainly can be divided into two large classes: a class is so-called non-destructive technique (absorption method), these class methods comprise active carbon adsorption (can see number of patent application correlation technique disclosed in the patent of 200710028462.4), condensation method (can see number of patent application correlation technique disclosed in the patent of 201120148948.3), the technology that solution absorption method (can see number of patent application correlation technique disclosed in the patent of 201110341724.9) etc. is common, general by changing pressure in certain technical process, the physical conditions such as temperature make volatile organic exhaust gas enrichment be separated, another kind of is so-called destructive technology (edman degradation Edman), mainly comprise the technology that direct combustion method (can see number of patent application correlation technique disclosed in the patent of 200810039311.3) and photocatalytic method (can see number of patent application correlation technique disclosed in the patent of 201210112303.3) etc. be common, make volatile organic exhaust gas conversion be CO by chemical technology
2, water and nontoxic or that toxicity is less inorganic matter.Process conditions and the requirement of various method process volatile organic waste gas have different application scope and pluses and minuses.For example, there is to the volatile organic exhaust-gas treatment of low concentration the shortcoming that investment is large, operating cost is high in condensation process, is generally only applicable to the volatile organic waste gas pollution control and treatment of high concentration, little air quantity; Absorption method has good treatment effect for the volatile organic waste gas of low concentration, but needs to regenerate adsorbent continually; Field of Environment Protection often adopts the mode process volatile organic compounds of burning or catalytic combustion, but catalytic combustion often needs higher ignition temperature and reaction time, causes energy consumption comparatively large, and also higher to the requirement of consersion unit; Light-catalysed method due to treating capacity little, processing speed is lower is in the laboratory research stage always.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of efficient, energy-saving and environmental protection and the device of structure simple flash process volatile organic waste gas.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is:
A kind of device of flash process volatile organic waste gas, its key technology is: it comprise by appendix order be connected for removing the pretreating device of soda acid and dedusting, microwave reactor and absorption plant, the appendix between described pretreating device and microwave reactor is provided with air pump, volatile organic matter on-line computing model and gas flowmeter;
Described microwave reactor comprises cylindrical shell combination and at least one group of magnetron be connected with cylindrical shell and waveguide and combines;
Described cylindrical shell combines the urceolus comprising inner core and be fixedly connected with it, and described inner core is wave transparent earthenware, and described urceolus is the stainless steel cylinder that inwall polishes smooth; Be communicated with urceolus by waveguide after described magnetron is communicated with waveguide; Being provided with packing layer in described inner core, between described inner core and urceolus, being provided with the alumina silicate heat-preservation cotton for ensureing cavity temperature; The two ends up and down of described urceolus are equipped with the aluminium film preventing microwave leakage;
Be communicated with from volatile organic matter on-line computing model appendix out with the bottom air inlet of described inner core, the gas outlet, top of described inner core is communicated with the air inlet of absorption plant.
Described inner core top is fixedly connected with the cover assembly of urceolus with positioning seat by compact heap, the junction, bottom of described urceolus and inner core seals through sealing ring and dividing plate, the bottom of described inner core is provided with lower cover component and the baffle plate for support packing layer, and this baffle plate offers multiple circular hole; The bottom of described baffle plate is provided with lower shell ring, and this lower shell ring bottom is provided with flange.
Described urceolus and waveguide junction are closed by the mica sheet that can prevent dust in cavity from entering magnetron, and magnetron is at least 20cm from the distance at microwave cavity edge, and described waveguide adopts fine copper or silver-plated waveguide.
Described pretreating device comprises wet type or Dry absorption wash mill and cyclone dust collectors or sack cleaner.
Described volatile organic matter on-line computing model adopts TVOCs on-line monitoring equipment or specific volatile organic matter explosion early warning device; Described VOCs or TVOCs on-line monitoring monitoring of equipment scope is at 0-106ppm; Specific VOCs early warning explosion equipment is according to concrete VOCs type set UEL and lower limit.
Described microwave reactor adopts 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, and described microwave reactor adopts single tube or multitube combination, adds catalysis material of energizing in described inner core.It is rapid that the inner catalysis material of energizing added should meet intensification under microwave field, Stability Analysis of Structures, the requirement that catalytic capability is strong.
Described absorption plant adopts liquid absorption tower or solid bed adsorber, and the pipeline before described absorption plant is provided with condensation or heat-exchanger rig, this condensing unit can adopt tubulation or fin.Heat-exchanger rig can be used for gas and enters preheating before microwave reactor.
The air inlet-outlet pipe of described microwave reactor adopts corrosion-and high-temp-resistant material.
The beneficial effect adopting technique scheme to produce is:
1, the present invention is provided with inner core and urceolus combining structure, and be provided with magnetron and waveguide, during work, it utilizes microwave flash to energize the method for catalysis, not only can process high concentration volatile organic waste gas, can also utilize the catalytic of microwave and the adsorptivity of catalyst under organic gas temperature is far below catalytic combustion temperature conditions, process the volatile organic compounds of low concentration, have that purification efficiency is high, energy consumption is low, the feature of non-secondary pollution;
2, this device overall structure is fairly simple, and its treatment effect is better and efficiency is higher.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the schematic diagram of microwave reactor of the present invention;
Fig. 3 is the schematic diagram of positioning seat;
Fig. 4 is positioning seat schematic top plan view;
Fig. 5 is the schematic diagram of lower cover component part;
Fig. 6 is the schematic diagram of baffle plate;
Fig. 7 is the position enlarged diagram of A portion circular hole on baffle plate;
Fig. 8 is the enlarged diagram in B portion in Fig. 2;
Fig. 9 is the enlarged diagram in C portion in Fig. 2;
In figure
:1-pretreating device, 2-air pump, 3-volatile organic matter on-line computing model, 4-gas flowmeter, 5-microwave reactor, 6-absorption plant, 7-cylindrical shell combines, 8-magnetron, 9-waveguide, 10-lower cover component, 11-O type circle, 12-dividing plate, 13-screw, 14-packing layer, 15-aluminium film, 16-alumina silicate heat-preservation cotton, 17-inner core, 18-compact heap, 19-represents positioning seat, 20-set bolt, 21-hold-down nut, 22-cover assembly, 23-baffle plate, the upper shell ring of 24-, 25-terminal pad, 26-gripper shoe, shell ring under 27-, 28-flange, 29-sealing plate, 30-urceolus.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed.
See accompanying drawing 1-accompanying drawing 9, the present invention includes by air delivering pipeline tandem be communicated with for removing the pretreating device 1 of soda acid and dedusting, microwave reactor 5 and absorption plant 6, the appendix between described pretreating device 1 and microwave reactor 5 is connected with air pump 2, volatile organic matter on-line computing model 3 and gas flowmeter 4;
Described microwave reactor comprises cylindrical shell combination 7 and combines the 7 at least one group of magnetrons 8 be connected with cylindrical shell and waveguide 9 combines;
The urceolus 30 that described cylindrical shell combination 7 comprises inner core 17 and is fixedly connected with it, inner core 17 and urceolus 30 are coaxially arranged, and described inner core 17 is wave transparent earthenware, the stainless steel cylinder that described urceolus 30 polishes smooth for inwall; Described magnetron 8 is communicated with waveguide 9, is then communicated with urceolus 30 by waveguide 9; Be provided with packing layer 14 in described inner core 17, be provided with the alumina silicate heat-preservation cotton material for ensureing cavity temperature between described inner core 17 and urceolus 30, this material can adopt alumina silicate heat-preservation cotton 16; The upper/lower terminal of described urceolus 30 is equipped with the aluminium film 15 of the outsourcing preventing microwave leakage.
Be communicated with from volatile organic matter on-line computing model 3 appendix out with the bottom air inlet of described inner core 17, the gas outlet, top of described inner core 17 is communicated with the air inlet of absorption plant 6.
See accompanying drawing 2 ~ accompanying drawing 9, described inner core 17 top is fixedly connected with the cover assembly 22 of urceolus with positioning seat 19 by compact heap 18, described urceolus 30 is tightly connected through sealing ring 11 and dividing plate 12 with the junction, bottom of inner core 17, the bottom of described inner core 17 is provided with lower cover component 10 and the baffle plate 23 for support packing layer, and this baffle plate 23 offers multiple circular hole; Described lower cover component 10 comprises sealing plate 29 and is located at the lower shell ring 27 of bottom of described baffle plate 23, and this lower shell ring 27 bottom is provided with flange 28, and described baffle plate 23 top is connected with sealing plate 29 by gripper shoe 26.Described positioning seat 19 comprises shell ring 24 and is located at the terminal pad 25 of shell ring 24 lower outside.
Described urceolus 30 and waveguide 9 junction are closed by the mica sheet that can prevent dust in cavity from entering magnetron 8, magnetron 8 is at least 20cm from the distance at microwave cavity (i.e. the cavity of urceolus 30 and inner core 17 formation) edge, because cavity can be carried out along with experiment and heat up, keep certain distance, avoid high temperature can the use of stabilized magnetron.Described waveguide adopts fine copper or silver-plated waveguide (or being excitation cavity).
Described pretreating device 1 comprises wet type or Dry absorption wash mill and cyclone dust collectors or sack cleaner, and wherein wet type or Dry absorption wash mill are used for deacidification, and cyclone dust collectors or sack cleaner are used for dedusting.It is got rid of acid alkaline gas and dust etc. according to the feature of organic exhaust gas, prevents the damage to equipment.
Described volatile organic matter on-line computing model 3 adopts TVOCs on-line monitoring equipment or specific volatile organic matter explosion early warning device, such as benzene
-the like products such as specific volatile organic matter early warning explosion device and acetone-specific volatile organic matter early warning explosion device.Volatile organic matter on-line computing model 3 can adopt the products such as the TVOC gas detector (digital display remote control type) of Qingdao Loobo Hongye Environmental Protection Technology Co., Ltd..Described VOCs or TVOCs on-line monitoring monitoring of equipment scope is at 0-10
6ppm; Specific VOCs early warning explosion equipment is according to concrete VOCs type set UEL and lower limit.
Described microwave reactor adopts 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, and described microwave reactor 5 adopts single tube or multitube combination, adds catalysis material of energizing in described inner core 17.Common single magnetron power be 0.5-1.5KW owing to being subject to power limit, the small-power instruments such as therefore single tube is generally used for household microwave oven, microwave dissolver; Multitube is used for industrial HIGH-POWERED MICROWAVES stove.During use, strong ripple material of inhaling is added as material of energizing in multimode (, single mode, multiple magnetron is multimode for single magnetron) microwave reactor inside, realizes decomposing the quick catalysis of organic volatile.
Described absorption plant adopts liquid absorption tower or solid bed adsorber, its different choice according to organic matter physico-chemical property uses, pipeline before described absorption plant 6, between microwave reactor 5 is provided with condensation or heat-exchanger rig, and this condensing unit can adopt tubulation, fin etc.Heat-exchanger rig can be used for gas and enters preheating before microwave reactor.The air inlet-outlet pipe of described microwave reactor 5 adopts corrosion-and high-temp-resistant material.
See accompanying drawing 1, the course of work of the present invention is: organic exhaust gas first removes soda acid and dedusting through pretreating device, waste gas after process passes into microwave reactor and carries out catalyse pyrolysis reaction, and microwave special-purpose catalyst is housed in reactor, realizes decomposing the quick catalysis of organic volatile; Then gas out enters absorption plant, and according to the difference of organic matter physico-chemical property, adopt solid-state or liquid absorbent device, removing some solid impurities further can reach zero-emission.
Verify that this device can produce good effect really below by several specific embodiment.
embodiment 1
The content of acetone that known Hebei pharmacy corporation discharges in certain workshop section reaches about 15000ppm.In order to provide the acetone waste gas of continous-stable, we adopt acetone soln to heat volatilization, obtaining the simulation acetone waste gas that concentration is 14400 ppm, controlling microwave power at 8kW, gas flow rate 6L/min by controlling acetone volatile quantity.After adopting apparatus of the present invention to process, the clearance of acetone is 98.3% after measured, gives vent to anger and reaches discharging standards.
embodiment 2
The ethyl acetate content that known Hebei pharmacy corporation discharges in certain workshop section reaches about 7000ppm.In order to provide the ethyl acetate waste gas of continous-stable, we adopt ethyl acetate solution to heat volatilization, obtaining the simulation ethyl acetate waste gas that concentration is 6800 ppm, controlling microwave power at 7kW, gas flow rate 6L/min by controlling ethyl acetate volatile quantity.After adopting apparatus of the present invention to process, the clearance of ethyl acetate is 97.4% after measured, gives vent to anger and reaches discharging standards.
embodiment 3
Known Hebei pharmacy corporation produces a large amount of volatile organic compounds in the anaerobism workshop section in wastewater treatment stage in top, pond, and TVOC content reaches 3000ppm after measured.In order to provide the volatile organic waste gas of continous-stable, we adopt acetone, ethyl acetate and toluene solution to volatilize according to 1:1:1 Hybrid Heating, obtaining by controlling volatile quantity the simulation volatile organic waste gas that concentration is 3000 ppm, controlling microwave power at 5kW, gas flow rate 4L/min.After adopting apparatus of the present invention to process, the clearance of TVOCs is 98.5% after measured, gives vent to anger and reaches discharging standards.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the device of a flash process volatile organic waste gas, it is characterized in that: it comprise by appendix order be connected for removing the pretreating device (1) of soda acid and dedusting, microwave reactor (5) and absorption plant (6), the appendix between described pretreating device (1) and microwave reactor (5) is provided with air pump (2), volatile organic matter on-line computing model (3) and gas flowmeter (4);
Described microwave reactor comprises cylindrical shell combination (7) and combines at least one group of magnetron (8) that (7) be connected with cylindrical shell and waveguide (9) combines;
The urceolus (30) that described cylindrical shell combination (7) comprises inner core (17) and is fixedly connected with it, described inner core (17) is wave transparent earthenware, the stainless steel cylinder that described urceolus (30) polishes smooth for inwall; Be communicated with urceolus (30) by waveguide (9) after described magnetron (8) is communicated with waveguide (9); Being provided with packing layer (14) in described inner core (17), between described inner core (17) and urceolus (30), being provided with the alumina silicate heat-preservation cotton (16) for ensureing cavity temperature; The two ends up and down of described urceolus (30) are equipped with the aluminium film (15) preventing microwave leakage;
Be communicated with from volatile organic matter on-line computing model (3) appendix out with the bottom air inlet of described inner core (17), the gas outlet, top of described inner core (17) is communicated with the air inlet of absorption plant (6).
2. the device of flash process volatile organic waste gas according to claim 1, it is characterized in that: described inner core (17) top is fixedly connected with the cover assembly (22) of urceolus with positioning seat (19) by compact heap (18), described urceolus (30) seals through sealing ring (11) and dividing plate (12) with the junction, bottom of inner core (17), the bottom of described inner core (17) is provided with lower cover component (10) and the baffle plate (23) for support packing layer, and (23) offer multiple circular hole to this baffle plate; The bottom of described baffle plate (23) is provided with lower shell ring (27), and this lower shell ring (27) bottom is provided with flange (28).
3. the device of flash process volatile organic waste gas according to claim 1, it is characterized in that: described urceolus (30) and waveguide (9) junction are closed by the mica sheet that can prevent dust in cavity from entering magnetron (8), magnetron (8) is at least 20cm from the distance at microwave cavity edge, and described waveguide adopts fine copper or silver-plated waveguide.
4. the device of flash process volatile organic waste gas according to claim 1, is characterized in that: described pretreating device (1) comprises wet type or Dry absorption wash mill and cyclone dust collectors or sack cleaner.
5. the device of flash process volatile organic waste gas according to claim 1, is characterized in that: described volatile organic matter on-line computing model (3) adopts TVOCs on-line monitoring equipment or specific volatile organic matter explosion early warning device; Described VOCs or TVOCs on-line monitoring monitoring of equipment scope is at 0-10
6ppm.
6. the device of flash process volatile organic waste gas according to claim 1, it is characterized in that: described microwave reactor adopts 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, described microwave reactor (5) adopts single tube or multitube combination.
7. the device of flash process volatile organic waste gas according to claim 1, it is characterized in that: described absorption plant adopts liquid absorption tower or solid bed adsorber, the pipeline that described absorption plant (6) is front is provided with condensation or heat-exchanger rig, and this condensing unit adopts tubulation or fin.
8. the device of flash process volatile organic waste gas according to claim 1, is characterized in that: the air inlet-outlet pipe of described microwave reactor (5) adopts corrosion-and high-temp-resistant material.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535146.6A CN104258728B (en) | 2014-10-13 | 2014-10-13 | A kind of device of flash processing volatile organic waste gas |
| RU2017115761A RU2659271C1 (en) | 2014-10-13 | 2014-12-05 | Device for rapid processing of volatile organic exhaust gas and method for treating volatile organic gas |
| PCT/CN2014/093085 WO2016058251A1 (en) | 2014-10-13 | 2014-12-05 | Apparatus for flash treatment of volatile organic waste gas and method for treating volatile organic gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410535146.6A CN104258728B (en) | 2014-10-13 | 2014-10-13 | A kind of device of flash processing volatile organic waste gas |
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| CN104258728A true CN104258728A (en) | 2015-01-07 |
| CN104258728B CN104258728B (en) | 2019-04-19 |
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| CN201410535146.6A Active CN104258728B (en) | 2014-10-13 | 2014-10-13 | A kind of device of flash processing volatile organic waste gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108535445A (en) * | 2017-11-24 | 2018-09-14 | 南京理工大学 | A kind of device and method measuring catalysis burning and heat to electricity conversion integrating device thermoelectricity capability |
| CN109731468A (en) * | 2019-03-05 | 2019-05-10 | 广东环境保护工程职业学院 | A kind of waste gas cleaning mechanism and emission-control equipment |
| CN111780139A (en) * | 2020-07-07 | 2020-10-16 | 天津大学 | Microwave rapid preheating VOCs catalytic oxidation device |
| CN113209922A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Microwave coupling catalytic reactor and VOCs treatment facility |
| CN113209921A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Microwave coupling catalytic reactor and VOCs treatment facility |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108535445A (en) * | 2017-11-24 | 2018-09-14 | 南京理工大学 | A kind of device and method measuring catalysis burning and heat to electricity conversion integrating device thermoelectricity capability |
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Inventor after: Guo Bin Inventor after: Wang Xin Inventor after: Ren Ailing Inventor after: Zhang Dingchao Inventor after: Duan Erhong Inventor after: Han Mengfei Inventor after: Zhang Yuxin Inventor after: Yin Gengchang Inventor before: Guo Bin Inventor before: Wang Xin Inventor before: Ren Ailing Inventor before: Zhang Dingchao Inventor before: Duan Erhong Inventor before: Han Mengfei |
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Free format text: CORRECT: INVENTOR; FROM: GUO BIN WANG XIN REN AILING ZHANG DINGCHAO DUAN ERHONG HAN MENGFEI TO: GUO BIN WANG XIN REN AILING ZHANG DINGCHAO DUAN ERHONG HAN MENGFEI ZHANG YUXIN YIN GENGCHANG |
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