CN104437052A - Chemical laboratory waste gas treating method and chemical laboratory waste gas treating device - Google Patents
Chemical laboratory waste gas treating method and chemical laboratory waste gas treating device Download PDFInfo
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- CN104437052A CN104437052A CN201410657344.XA CN201410657344A CN104437052A CN 104437052 A CN104437052 A CN 104437052A CN 201410657344 A CN201410657344 A CN 201410657344A CN 104437052 A CN104437052 A CN 104437052A
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Abstract
The invention relates to a chemical laboratory waste gas treating method and a chemical laboratory waste gas treating device. The method comprises the steps of removing dust of waste gas generated in a chemical laboratory through sponge, guiding the waste gas into a primary alkaline countercurrent tower through a fan via a ventilation cabinet, removing a great amount of acid gas, soluble alkaline and neutral waste gas, further absorbing the waste gas which cannot be absorbed in the primary alkaline countercurrent tower by virtue of a secondary alkaline countercurrent tower, exhausting the surplus gas into a high-efficiency activated carbon adsorption tower through a centrifugal fan, and adsorbing the surplus waste gas which is difficult to treat by virtue of the high-efficiency activated carbon; detecting the remaining gas after being adsorbed by activated carbon, discharging the gas if the gas is qualified by detection, pumping the gas to the primary alkaline countercurrent absorption tower by adopting a circulating air pump if the gas is unqualified by the detection so as to enable the gas to be circularly treated, and discharging the gas until the gas reaches the standard by the detection. By adopting the method and the device, the discharging of the pollution gas without exceeding the standard can be realized.
Description
Technical field
The present invention relates to a kind of method and apparatus being applicable to the process of polytype chemical laboratory waste gas.
Background technology
In the last thirty years, China's economy achieves huge achievement, but also pay huge cost, comprise resource, the cost of environment, along with the improvement day by day of people's living standard, and to the raising that the standard of living requires, society's environmental pollution is more and more paid close attention to, therefore, only have clean development, eco-friendly development just meets the needs in China's future.
In China, fuel combustion, the discharge of industrial waste gas is the main source of atmosphere pollution, till now, these pollutions have caused great harm, in a lot of local factory, laboratory, waste gas is not just directly discharged in air through any process, some enterprises or factory, although take certain processing mode to waste gas, but do not reach the discharge standard of national requirements, even the laboratory of some developed regions, the waste gas discharged is usually just just discharge after process in simple reduction of fractions to a common denominator cupboard also, in outlying district, some large-scale chemical plant, smeltery, laboratory, then any process is not done to waste gas at all, this brings great infringement to the life and health of employee and the local common people, consequence is extremely serious.
In sum, exhaust-gas treatment mode general at present has not met the requirement of national development, can not meet the demand of people ' s health, and therefore, the waste gas treatment process developing a kind of safety and sanitation clean is particularly important.
Summary of the invention
The object of this invention is to provide a kind of reached dusty gas zero comprising chalk dust removing, acidity, alkalescence, neutral soluble and soluble waste gas to exceed standard the method and apparatus of process of chemical laboratory waste gas.
Technical scheme of the present invention is: a kind of chemical laboratory waste gas processing method comprises following flow process:
Sponge dedusting: pass in the fume hood of included sponge by the waste gas that chemical laboratory produces, by sponge by dust solid particle contained in waste gas removing;
One-level sprays: the waste gas after sponge dedusting, is directed in alkali lye countercurrent spray tower, with the NaOH of the mass concentration 10% or Ca (OH) of equal basicity
2solution spraying, to remove major part feasible acidity, neutrality, alkaline gas;
Secondary sprays: the waste gas after one-level spray, imports in secondary alkali lye countercurrent spray tower, with the NaOH of the mass concentration 10% or Ca (OH) of equal basicity
2solution spraying, then sour gas is because of alkali lye neutralization, substantially removes, and neutral and alkali soluble gas dissolves equally substantially;
Charcoal absorption: by the gas after above-mentioned process, is imported in high efficiency active carbon adsorption tower by centrifugal blower, through the absorption of high efficiency active carbon, is substantially eliminated by contaminative waste gas.
Detect discharge: get the test of the waste gas after charcoal absorption process, if Related Component reaches discharge standard in waste gas, then discharge, if detect not up to standard, then import one-level alkali lye countercurrent spray tower by centrifugal blower, circulation removal of impurities, until detect rear discharge up to standard.
The equipment of the process of chemical laboratory waste gas of the present invention: this equipment comprises: include the fume hood of sponge, the first alkali lye countercurrent spray tower and the second alkali lye countercurrent spray tower, alkali lye circulatory pool, the first circulating pump and the second circulating pump, the first centrifugal blower and the second centrifugal blower, high efficiency active carbon adsorption tower; The fume hood including sponge connects the first alkali lye countercurrent spray tower, first alkali lye countercurrent spray tower is connected with the second alkali lye countercurrent spray tower by the first centrifugal blower, first alkali lye countercurrent spray tower is connected with alkali lye circulatory pool with the second circulating pump respectively by the firstth circulating pump with the second alkali lye countercurrent spray tower, second alkali lye countercurrent spray tower is connected with high efficiency active carbon adsorption tower by the second centrifugal blower, high efficiency active carbon adsorption tower is connected to checkout gear, and checkout gear is connected with the first alkali lye countercurrent spray tower again.
Advantage of the present invention is: this method comprises twice alkali lye counter current absorption tower, can remove more thorough by acid, alkaline and neutral soluble gas, add high efficiency active carbon adsorption tower, can obtain cleaner by insoluble residual air process.By multi-layer circular treatment and test and monitoring timely, zero discharge beyond standards of pollution gas can be realized.Utilize alkaline absorbent to have higher solubility, do not deposit the high and absorbent nonvolatile advantage in washing process of fouling and clogging problem, absorbability in systems in which.
Accompanying drawing explanation
Fig. 1 is chemical laboratory waste gas treatment process schematic diagram of the present invention.
Detailed description of the invention
As shown in Figure 1: the waste gas that chemical laboratory produces, through the fume hood 1 of included sponge, go out dust contained in waste gas by the suction-operated of sponge; Gas after sponge dedusting, be directed in one-level alkali lye countercurrent spray tower 2, by circulating pump 4, by the NaOH solution of the mass concentration 10% in alkali lye storage pool 3 from one-level alkali lye countercurrent spray tower 2 top spray (interim NaOH amount of adding guarantees mass concentration 10%), remove most of sour gas and solvable alkaline neutral gas; Residual air imports in secondary alkali lye countercurrent spray tower 7 via blower fan 5, by the processing mode same with one-level alkali lye countercurrent spray tower 2, and more soluble gas in removing residual air; Remaining gas imports in high efficiency active carbon adsorption tower 9 through centrifugal blower 8 and allows high efficiency active carbon adsorb, the gas sample of adsorbing through high efficiency active carbon is detected, namely discharge after up to standard, not up to standard then through circulating fan 10 exhausting in one-level countercurrent spray tower 2, carry out circular treatment, until detect qualified rear discharge, through this circular treatment and timely test and monitoring, pollution gas discharge zero can be reached and exceed standard.
The present invention's equipment used is: fume hood 1, the first alkali lye countercurrent spray tower 2 and the second alkali lye countercurrent spray tower 7 that include sponge, alkali lye circulatory pool 3, first circulating pump 4 and the second circulating pump 6, first centrifugal blower 5 and the second centrifugal blower 8, high efficiency active carbon adsorption tower 9 and checkout gear 10; The fume hood 1 including sponge connects the first alkali lye countercurrent spray tower 2, first alkali lye countercurrent spray tower 2 is connected with the second alkali lye countercurrent spray tower 7 by the first centrifugal blower 3, first alkali lye countercurrent spray tower 2 is connected with alkali lye circulatory pool 3 with the second circulating pump 6 respectively by the firstth circulating pump 4 with the second alkali lye countercurrent spray tower 7, second alkali lye countercurrent spray tower 7 is connected with high efficiency active carbon adsorption tower 9 by the second centrifugal blower 8, high efficiency active carbon adsorption tower 9 is connected to checkout gear 10, and checkout gear 10 is connected with the first alkali lye countercurrent spray tower 2 again.
The fume hood containing sponge described in the present invention, the first alkali lye countercurrent spray tower and the second alkali lye countercurrent spray tower, alkali lye circulatory pool, the first circulating pump and the second circulating pump, high efficiency active carbon adsorption tower and checkout gear all can adopt existing equipment and prior art to make.
Claims (2)
1. a chemical laboratory waste gas processing method, is characterized in that comprising the following steps:
1) sponge dedusting: the waste gas that laboratory produces, via the sponge in fume hood, the dust-type solid particle contained in removing waste gas;
2) once spray: the waste gas after sponge dedusting, towards one-level counter current absorption tower bottom, with the Ca (OH) of the NaOH solution of mass concentration 10% or identical basicity
2solution spraying, major part of going out is acid, alkalescence, neutral soluble gas;
3) secondary spraying: the waste gas once after spray process, towards in secondary countercurrent tower, carry out secondary spraying with alkali lye described in b, Acidity of Aikalinity and neutral soluble waste gas go out to the greatest extent substantially;
4) charcoal absorption: by the waste gas after secondary spraying process, imports in high efficiency active carbon adsorption tower with centrifugal blower, by the efficient adsorption effect of active carbon, is removed further by the pernicious gas being insoluble to alkali lye;
5) discharge is detected: get the test of the waste gas after charcoal absorption process, if Related Component reaches discharge standard in waste gas, then discharge, if detect not up to standard, then import one-level alkali lye countercurrent spray tower by centrifugal blower, circulation removal of impurities, until detect rear discharge up to standard.
2. the equipment that a chemical laboratory waste gas processing method as claimed in claim 1 is used, it is characterized in that this equipment comprises: include the fume hood of sponge, the first alkali lye countercurrent spray tower and the second alkali lye countercurrent spray tower, alkali lye circulatory pool, the first circulating pump and the second circulating pump, the first centrifugal blower and the second centrifugal blower, high efficiency active carbon adsorption tower; The fume hood including sponge connects the first alkali lye countercurrent spray tower, first alkali lye countercurrent spray tower is connected with the second alkali lye countercurrent spray tower by the first centrifugal blower, first alkali lye countercurrent spray tower is connected with alkali lye circulatory pool with the second circulating pump respectively by the firstth circulating pump with the second alkali lye countercurrent spray tower, second alkali lye countercurrent spray tower is connected with high efficiency active carbon adsorption tower by the second centrifugal blower, high efficiency active carbon adsorption tower is connected to checkout gear, and checkout gear is connected with the first alkali lye countercurrent spray tower again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410657344.XA CN104437052A (en) | 2014-11-17 | 2014-11-17 | Chemical laboratory waste gas treating method and chemical laboratory waste gas treating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410657344.XA CN104437052A (en) | 2014-11-17 | 2014-11-17 | Chemical laboratory waste gas treating method and chemical laboratory waste gas treating device |
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| CN104437052A true CN104437052A (en) | 2015-03-25 |
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| CN201410657344.XA Pending CN104437052A (en) | 2014-11-17 | 2014-11-17 | Chemical laboratory waste gas treating method and chemical laboratory waste gas treating device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941416A (en) * | 2015-06-12 | 2015-09-30 | 重庆理文造纸有限公司 | Odor treating system for chemical slurry workshop |
| CN105126506A (en) * | 2015-09-25 | 2015-12-09 | 大英德创精工设备有限公司 | Ultra-fine water curtain forming mechanism |
| CN106422727A (en) * | 2016-11-22 | 2017-02-22 | 扬州大学 | Full-automatic purification device for laboratory acid mist exhaust gas |
| CN108283937A (en) * | 2018-03-12 | 2018-07-17 | 南京科技职业学院 | A kind of laboratory exhaust gas processing method and device |
| CN108426257A (en) * | 2018-06-12 | 2018-08-21 | 北京恩吉节能科技有限公司 | A kind of industrial waste gas burning processing system |
| CN109603432A (en) * | 2018-11-29 | 2019-04-12 | 成都虹波钼业有限责任公司 | A kind of ammonia-containing exhaust absorbs the processing method of application |
| CN109612284A (en) * | 2018-11-28 | 2019-04-12 | 佛山市宏富达机械设备有限公司 | A kind of aluminum-bar heating furnace with waste gas recovering device |
| CN111672279A (en) * | 2020-05-11 | 2020-09-18 | 北京航天试验技术研究所 | Gas absorbing device for liquid rocket engine ground test |
| CN113457358A (en) * | 2021-07-06 | 2021-10-01 | 深圳市奥图威尔科技有限公司 | Full-automatic recovery unit of organic volatile matter |
| CN114870536A (en) * | 2022-06-13 | 2022-08-09 | 安徽天成新材料有限公司 | A production waste gas treatment system for acetoacetic ester |
| CN115015520A (en) * | 2022-05-30 | 2022-09-06 | 河南大学 | Soil detection device for repairing heavy metals in soil and using method thereof |
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| EP0801970A1 (en) * | 1996-04-16 | 1997-10-22 | Kt Kunststofftechnik Gmbh | Washing liquid circuit for waste gas scrubbers |
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Patent Citations (4)
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| EP0801970A1 (en) * | 1996-04-16 | 1997-10-22 | Kt Kunststofftechnik Gmbh | Washing liquid circuit for waste gas scrubbers |
| CN202151512U (en) * | 2011-04-29 | 2012-02-29 | 济宁医学院 | Device for treating acid waste gas in laboratory |
| CN203090740U (en) * | 2013-03-18 | 2013-07-31 | 哈尔滨师范大学 | Waste gas treatment device for chemical experiment |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941416A (en) * | 2015-06-12 | 2015-09-30 | 重庆理文造纸有限公司 | Odor treating system for chemical slurry workshop |
| CN105126506A (en) * | 2015-09-25 | 2015-12-09 | 大英德创精工设备有限公司 | Ultra-fine water curtain forming mechanism |
| CN106422727A (en) * | 2016-11-22 | 2017-02-22 | 扬州大学 | Full-automatic purification device for laboratory acid mist exhaust gas |
| CN108283937A (en) * | 2018-03-12 | 2018-07-17 | 南京科技职业学院 | A kind of laboratory exhaust gas processing method and device |
| CN108426257A (en) * | 2018-06-12 | 2018-08-21 | 北京恩吉节能科技有限公司 | A kind of industrial waste gas burning processing system |
| CN109612284A (en) * | 2018-11-28 | 2019-04-12 | 佛山市宏富达机械设备有限公司 | A kind of aluminum-bar heating furnace with waste gas recovering device |
| CN109603432A (en) * | 2018-11-29 | 2019-04-12 | 成都虹波钼业有限责任公司 | A kind of ammonia-containing exhaust absorbs the processing method of application |
| CN111672279A (en) * | 2020-05-11 | 2020-09-18 | 北京航天试验技术研究所 | Gas absorbing device for liquid rocket engine ground test |
| CN113457358A (en) * | 2021-07-06 | 2021-10-01 | 深圳市奥图威尔科技有限公司 | Full-automatic recovery unit of organic volatile matter |
| CN115015520A (en) * | 2022-05-30 | 2022-09-06 | 河南大学 | Soil detection device for repairing heavy metals in soil and using method thereof |
| CN114870536A (en) * | 2022-06-13 | 2022-08-09 | 安徽天成新材料有限公司 | A production waste gas treatment system for acetoacetic ester |
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Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |