CN203123810U - Waste gas treatment device - Google Patents
Waste gas treatment device Download PDFInfo
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- CN203123810U CN203123810U CN 201320163619 CN201320163619U CN203123810U CN 203123810 U CN203123810 U CN 203123810U CN 201320163619 CN201320163619 CN 201320163619 CN 201320163619 U CN201320163619 U CN 201320163619U CN 203123810 U CN203123810 U CN 203123810U
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Abstract
The utility model relates to waste gas treatment equipment and discloses a waste gas treatment device. The device comprises a waste gas inlet pipe, a vacuum buffer tank, a Venturi mixer, at least one stage of absorption tower, a liquid storage tank and an emission stack of gases up to the standard, wherein the waste gas inlet pipe is connected with the gas inlet of the vacuum buffer tank; the gas outlet of the vacuum buffer tank is connected with the gas inlet of the Venturi mixer via a pipeline; the liquid outlet of the liquid storage tank is connected with the liquid inlet of the Venturi mixer via a pipeline and a circulating pump; the mixed gas liquid outlet of the Venturi mixer is connected with the mixed gas liquid inlet of the liquid storage tank via a pipeline; and the gas outlet of the liquid storage tank is connected with the gas inlet of the absorption tower via a pipeline. According to the technical scheme disclosed by the utility model, the waste gases with nitric oxide concentration above 10000ppm can achieve treatment up to the standard, thus really solving the technical problem that high-concentration nitric oxide waste gases are hard to treat.
Description
Technical field
The utility model relates to a kind of waste gas treatment equipment, relates in particular to a kind of emission-control equipment.
Background technology
Can produce various unmanageable waste gas, particularly nitrous oxides exhaust gas in the Chemical Manufacture, at this kind waste gas, the conventional more method of application: liquid absorption method, catalytic reduction method and solid absorption method.
Catalytic reduction method: utilizing nitrogen oxide under the situation that catalyst exists, the liquefied ammonia atomized spray to reaction system, is carried out redox anyway under 220 ℃ ~ 400 ℃, is the nitrogen G﹠W with conversion of nitrogen oxides, and correlate equation is as follows:
6NO
2+8NH
3→7N
2+12H
2O
6NO+4NH
3→5N
2+6H
2O
This technological equipment investment is big, operating cost is high, easily catalyst poisoning takes place, and can't handle the nitrous oxides exhaust gas of high concentration.
The solid absorption method: be a kind of method that adopts the adsorbents adsorb nitrogen oxide, adsorbent has molecular sieve, active carbon, silica gel, mud coal etc.The regeneration complexity of this method adsorbent, and the nitrous oxides exhaust gas pollution appears in the regeneration easily again, industrial seldom employing.
Liquid absorption method: liquid absorption method is generally one-level or the two-stage absorption tower absorbs, and absorption liquid adopts sodium hydroxide solution or sodium carbonate liquor etc.This method absorbent source is wide, and adaptability is strong, thereby industrial practical application is comparatively extensive.
But because the nature parameters of the nitrous oxides exhaust gas that different industrial production produce is all different, simple alkali lye absorbs the stably reaching standard that can't guarantee exhaust-gas treatment, special in the high concentration nitrous oxides exhaust gas of concentration more than 10000ppm, this kind waste gas is everlasting and is occurred in the Chemical Manufacture with red fuming nitric acid (RFNA) dissolution of metals production product.
Summary of the invention
The utility model provides a kind of energy stably reaching standard to handle the treating apparatus of high concentration nitrous oxides exhaust gas at deficiency of the prior art.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Emission-control equipment comprises exhaust inlet pipe, first grade absorption tower and gas blowdown stack up to standard at least, and described absorption tower is provided with air inlet, gas outlet and inlet, also comprises vacuum buffer tank, venturi mixer and fluid reservoir; Described vacuum buffer tank is provided with air inlet and gas outlet, and described venturi mixer is provided with air inlet, inlet and mixing gas-liquid delivery outlet, and described fluid reservoir is provided with inlet, liquid outlet, mixing gas-liquid input port and gas outlet; Institute's exhaust inlet pipe links to each other with the air inlet of vacuum buffer tank, the gas outlet of described vacuum buffer tank links to each other with the air inlet of venturi mixer by pipeline, the liquid outlet of described fluid reservoir links to each other with the inlet of venturi mixer by pipeline and through circulating pump, the mixing gas-liquid delivery outlet of described venturi mixer links to each other with the mixing gas-liquid input port of fluid reservoir by pipeline, and the gas outlet of described fluid reservoir links to each other with the air inlet on absorption tower by pipeline.
Described venturi mixer is a kind of air-breathing and equipment hybrid reaction of integrating, and itself does not have moving component, is made up of nozzle, suction chamber, diffuser pipe three parts.Absorption liquid fluid with certain pressure sprays at a high speed by nozzle, make pressure energy conversion rate energy, form vacuum in the jet expansion zone, thereby waste gas is evacuated to vacuum buffer tank earlier, after the waste gas buffering, enters venturi mixer again, two strands of media of waste gas and absorption liquid mix in diffuser pipe and energy exchange, and make speed can be reduced into the pressure energy, and discharge to be higher than atmospheric pressure at last, namely part waste gas obtains handling.
As preferably, also comprise the air inlet adjustment pipe, described air inlet adjustment Guan Yiduan communicates with atmosphere, and the other end is connected in exhaust inlet pipe, also is provided with valve on the described air inlet adjustment pipe.Set up the air inlet adjustment pipe, can control the intensity of bleeding of high-concentration waste gas, avoid excessive extraction.In addition, draw air and enter in this system, can also oxidation gaseous effluent.
As preferably, also comprise ozone generator and the catalytic converter that ozone can be transformed into the stronger elemental oxygen of oxidisability, the gas outlet of described ozone generator links to each other with the air inlet of catalytic converter, and the gas outlet of described catalytic converter is connected in the pipeline of fluid reservoir gas outlet end by pipeline.Set up ozone generator and catalytic converter, ozone can be transformed into the stronger elemental oxygen of oxidisability, elemental oxygen and waste gas cross in pipeline again, make waste gas obtain oxidation, improve the off-gas oxidizing degree.Because oxidizability is more high, more be conducive to the follow-up absorption reaction of waste gas.
As preferably, also comprise oxygen increasing tube, described oxygen increasing tube one end is connected in the pipeline of catalytic converter gas outlet end, and the other end is connected in the pipeline of gas outlet, first order absorption tower end, also is provided with valve on the described oxygen increasing tube.The elemental oxygen that oxidisability is stronger feeds the absorption tower after the first order, further gets over the high oxidation degree, is more conducive to the follow-up absorption reaction of waste gas.
As preferably, also comprise dispensing canister, the liquid outlet of described dispensing canister links to each other with the inlet of fluid reservoir and the inlet on absorption tower respectively by pipeline and through the loading pump.
As preferably, described absorption tower comprises the liquid storage tank of bottom, some packing layers at middle part, the demist layer on top, riser and the circulating pump of absorption liquid, and described riser is equipped with liquid outlet above each packing layer.Absorption liquid sprays from top to bottom, and waste gas is carried from the bottom up, relies on the interior double-deck filler of tower to be reaction platform, the abundant haptoreaction of absorption liquid and waste gas, further absorption reaction waste gas.Top demist layer separates droplet, waste gas enters two-level absorption tower by airduct, enter two-level absorption tower before, open that valve is sent into elemental oxygen and waste gas reacts to improve the off-gas oxidizing degree, in two-level absorption tower, carry out equally with first grade absorption tower in absorption reaction.
As preferably, the gas outlet on described afterbody absorption tower links to each other with gas blowdown stack up to standard by pipeline and through air-introduced machine.
According to the technical solution of the utility model, the waste gas of nitrous oxides concentration more than 10000ppm all can be realized processing up to standard, has really solved the unmanageable technical problem of high concentration nitrous oxides exhaust gas.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the utility model is described in further detail.
Embodiment
Emission-control equipment comprises exhaust inlet pipe 1, vacuum buffer tank 2, venturi mixer 3, fluid reservoir 4, two-stage absorption tower 5, gas blowdown stack 6 up to standard, air inlet adjustment pipe 7, ozone generator 8, ozone can be transformed into catalytic converter 9, the dispensing canister 10 of the stronger elemental oxygen of oxidisability.
Described vacuum buffer tank 2 is provided with air inlet 21 and gas outlet 22; Described venturi mixer 3 is provided with air inlet 31, inlet 32 and mixes gas-liquid delivery outlet 33; Described fluid reservoir 4 is provided with inlet 41, liquid outlet 42, mixes gas-liquid input port 43 and gas outlet 44; Described absorption tower is provided with air inlet 51, gas outlet 52 and inlet 53, described absorption tower comprises the liquid storage tank 54 of bottom, some packing layers 55 at middle part, the demist layer 56 on top, riser 57 and the circulating pump 58 of absorption liquid, described riser is equipped with liquid outlet above each packing layer, the gas outlet on described afterbody absorption tower links to each other with gas blowdown stack 6 up to standard by pipeline and through air-introduced machine.
Institute's exhaust inlet pipe 1 links to each other with the air inlet 21 of vacuum buffer tank, the gas outlet 22 of described vacuum buffer tank links to each other with the air inlet 31 of venturi mixer by pipeline, the liquid outlet 42 of described fluid reservoir links to each other with the inlet 32 of venturi mixer by pipeline and through circulating pump 45, the mixing gas-liquid delivery outlet 33 of described venturi mixer links to each other with the mixing gas-liquid input port 43 of fluid reservoir by pipeline, and the gas outlet 44 of described fluid reservoir links to each other with the air inlet 51 on absorption tower by pipeline.Described air inlet adjustment pipe 7 one ends communicate with atmosphere, and the other end is connected in exhaust inlet pipe 1, also are provided with valve 71 on the described air inlet adjustment pipe.The gas outlet 81 of described ozone generator links to each other with the air inlet 91 of catalytic converter, and the gas outlet 92 of described catalytic converter is connected in the pipeline of fluid reservoir gas outlet 44 ends by pipeline 93, and described pipeline 93 is provided with valve 94.Described oxygen increasing tube 95 1 ends are connected in the pipeline 93 of catalytic converter gas outlet 92 ends, and the other end is connected in the pipeline of gas outlet, absorption tower 52 ends, also are provided with valve 96 on the described oxygen increasing tube.The liquid outlet of described dispensing canister 10 links to each other with the inlet 41 of fluid reservoir and the inlet 53 on absorption tower respectively by pipeline and through loading pump 101.
Handling high concentration nitrous oxides exhaust gas with absorption is example, during use, configures the absorption liquid that contains 4% NaOH and 4% sodium thiosulfate in dispensing canister 61, and absorption liquid is delivered to fluid reservoir 4, first grade absorption tower and two-level absorption tower with loading pump 62.
ON cycle pump 45 and valve 71, absorption liquid is pumped to venturi mixer, and high concentration nitrous oxides exhaust gas is pumped down to vacuum buffer tank, and after buffering, waste gas is pumped down to venturi mixer and absorption liquid absorbs hybrid reaction, and the waste gas of part is handled.
Open ozone generator 8, catalytic converter 9 and valve 94, convert air to ozone, ozone is transformed into the stronger elemental oxygen of oxidisability again, waste gas is sent into first grade absorption tower with after elemental oxygen mixes in pipeline.
ON cycle pump 58, absorption liquid in the first grade absorption tower sprays from top to bottom, waste gas is carried from the bottom up, rely on the interior double-deck filler of tower to be the reaction platform, the abundant haptoreaction of absorption liquid and waste gas, further absorption reaction nitrogen oxide, top demist layer separates droplet, waste gas enters two-level absorption tower by airduct, before entering two-level absorption tower, open that valve 96 is sent into elemental oxygen and waste gas reacts to improve the off-gas oxidizing degree, in two-level absorption tower, carry out equally with first grade absorption tower in absorption reaction, final nitrous oxides exhaust gas is sent into chimney high-altitude qualified discharge by blower fan.
By above this complete equipment, all can realize processing up to standard when the waste gas of waste gas air inlet nitrous oxides concentration more than 10000ppm, really solved the unmanageable technical problem of high concentration nitrous oxides exhaust gas
In a word, the above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (7)
1. emission-control equipment, comprise exhaust inlet pipe (1), first grade absorption tower (5) and gas blowdown stack up to standard (6) at least, described absorption tower is provided with air inlet (51), gas outlet (52) and inlet (53), it is characterized in that: also comprise vacuum buffer tank (2), venturi mixer (3) and fluid reservoir (4); Described vacuum buffer tank (2) is provided with air inlet (21) and gas outlet (22), described venturi mixer (3) is provided with air inlet (31), inlet (32) and mixes gas-liquid delivery outlet (33), and described fluid reservoir (4) is provided with inlet (41), liquid outlet (42), mixes gas-liquid input port (43) and gas outlet (44); Institute's exhaust inlet pipe (1) links to each other with the air inlet (21) of vacuum buffer tank, the gas outlet of described vacuum buffer tank (22) links to each other with the air inlet (31) of venturi mixer by pipeline, the liquid outlet of described fluid reservoir (42) links to each other with the inlet (32) of venturi mixer by pipeline and through circulating pump, the mixing gas-liquid delivery outlet (33) of described venturi mixer links to each other with the mixing gas-liquid input port (43) of fluid reservoir by pipeline, and the gas outlet of described fluid reservoir (44) link to each other with the air inlet (51) on absorption tower by pipeline.
2. emission-control equipment according to claim 1, it is characterized in that: also comprise air inlet adjustment pipe (7), described air inlet adjustment Guan Yiduan communicates with atmosphere, and the other end is connected in exhaust inlet pipe (1), also is provided with valve on the described air inlet adjustment pipe.
3. emission-control equipment according to claim 1 and 2, it is characterized in that: also comprise ozone generator (8) and ozone can be transformed into the catalytic converter (9) of the stronger elemental oxygen of oxidisability, the gas outlet of described ozone generator (81) links to each other with the air inlet (91) of catalytic converter, and the gas outlet of described catalytic converter (92) are connected in the pipeline of fluid reservoir gas outlet (44) end by pipeline.
4. emission-control equipment according to claim 3, it is characterized in that: also comprise oxygen increasing tube (11), described oxygen increasing tube one end is connected in the pipeline of catalytic converter gas outlet (92) end, the other end is connected in the pipeline of gas outlet, first order absorption tower (52) end, also is provided with valve on the described oxygen increasing tube.
5. emission-control equipment according to claim 3, it is characterized in that: also comprise dispensing canister (61), the liquid outlet of described dispensing canister links to each other with the inlet (41) of fluid reservoir and the inlet (53) on absorption tower respectively by pipeline and through loading pump (62).
6. emission-control equipment according to claim 3, it is characterized in that: described absorption tower (5) comprise the liquid storage tank (54) of bottom, some packing layers (55) at middle part, the demist layer (56) on top, riser (57) and the circulating pump (58) of absorption liquid, and described riser is equipped with liquid outlet above each packing layer.
7. emission-control equipment according to claim 3 is characterized in that: the gas outlet on described afterbody absorption tower links to each other with gas blowdown stack up to standard (6) by pipeline and through air-introduced machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163619 CN203123810U (en) | 2013-04-03 | 2013-04-03 | Waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163619 CN203123810U (en) | 2013-04-03 | 2013-04-03 | Waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203123810U true CN203123810U (en) | 2013-08-14 |
Family
ID=48931838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320163619 Expired - Lifetime CN203123810U (en) | 2013-04-03 | 2013-04-03 | Waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203123810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492242A (en) * | 2014-12-17 | 2015-04-08 | 合肥恒力电子装备公司 | Kiln exhaust gas purifying device and kiln exhaust gas purifying method |
| CN108043215A (en) * | 2017-12-25 | 2018-05-18 | 广州原点建设工程有限公司 | A kind of hospital's emission-control equipment and method |
-
2013
- 2013-04-03 CN CN 201320163619 patent/CN203123810U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492242A (en) * | 2014-12-17 | 2015-04-08 | 合肥恒力电子装备公司 | Kiln exhaust gas purifying device and kiln exhaust gas purifying method |
| CN108043215A (en) * | 2017-12-25 | 2018-05-18 | 广州原点建设工程有限公司 | A kind of hospital's emission-control equipment and method |
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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 |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |