CN103768894B - A kind of purification method containing benzene homologues waste gas - Google Patents
A kind of purification method containing benzene homologues waste gas Download PDFInfo
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- CN103768894B CN103768894B CN201210404077.6A CN201210404077A CN103768894B CN 103768894 B CN103768894 B CN 103768894B CN 201210404077 A CN201210404077 A CN 201210404077A CN 103768894 B CN103768894 B CN 103768894B
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Abstract
The invention discloses a kind of purification method containing benzene homologues waste gas.The method includes: (1) absorbent is mixed with by ion-type additive and the water with phenyl ring, and mass percentage concentration is 10wt% ~ 70wt%, and the described ion-type additive with phenyl ring is C6H5(CH2)XSO3 -, wherein x is 5 ~ 9；(2) joining in reactor by absorbent, reaction temperature controls at 20 ~ 60 DEG C, passes into the waste gas containing benzene homologues, and waste gas flow speed control benzene homologues in 50 ~ 500mL/min, waste gas is removed as oil phase.The method dimethylbenzene, benzene clearance respectively 89wt%, 91wt%, clearance is high, simple to operate, be widely used, low cost, administers for organic compounds and provides a kind of effective and feasible exhaust gas treatment method.
Description
Technical field
The invention belongs to waste gas purification processing technology field, be specifically related to a kind of purification method containing benzene homologues waste gas.
Background technology
Benzene homologues includes benzene,toluene,xylene (being called " triphen ") etc., is exhaust emissions common in industrial waste gas.As volatile organic waste gas representativeness pollutant typical in air, benzene homologues brings to environmental and human health impacts and has a strong impact on.Benzene homologues is the colourless gas with special aromatic odor, causes poisoning through contact skin and absorption, can cause drowsiness, headache, vomiting etc..It can enter human body by respiratory tract, the systems such as the breathing of people, blood, liver and organ can be made to cause temporary or permanent pathological changes, confirmed as poisonous carcinogen by international cancer research institution.In benzene homologues, the toxicity with benzene is maximum, is classified as strong carcinogen by WHO.Chronic Benzene Poisoning there will be the neurasthenia symptoms such as headache, insomnia, lassitude, hypomnesis, causes aplastic anemia, leukemogenesis etc. time serious.Therefore, the recovery of Typical Volatile Organic benzene homologues and improvement are become an important problem in current atmospheric pollution control.
Current waste gas containing benzene Treatment process is mainly: absorption cleaning technology, adsorption and purification technology, catalysis burning purification techniques and Purification biotechnology.Relatively low for concentration, burn purification techniques without volatile organic waste gas many employings catalysis of recovery value, and higher for concentration, and to have what recycle the many employings of volatile organic waste gas that are worth be absorption and absorption cleaning treatment technology.Catalytic combustion system investment and operating cost are all higher；Absorption method frequently be the adsorbing material such as activated carbon, activated carbon fiber, purification efficiency is higher, but it exists non-refractory, can not well keep absorbability under humidified condition, easy firing is, and garbage activated carbon is disposed or the cost of activated carbon fiber regeneration is relatively larger.Bioanalysis plant investment and operating cost are relatively low, but can only purifying low-concentration benzene homologues waste gas.Absorption process is a kind of purification method of a kind of development relatively morning and technics comparing maturation, and the quality of its absorption efficiency depends primarily in the selection of absorbent.CN101259360A discloses a kind of purification method containing benzene homologues waste gas, and the microemulsion of surfactant, cosurfactant and water mixed preparing is purified containing benzene homologues waste gas by this method as absorbent, but this method is to 2000mg/m3Dimethylbenzene or the clearance of benzene be only 80%, 82%.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of purification method containing benzene homologues waste gas.The method dimethylbenzene, benzene clearance respectively 89wt%, 91wt%, clearance is high, simple to operate, be widely used, low cost, administers for organic compounds and provides a kind of effective and feasible exhaust gas treatment method.
The present invention contains the purification method of benzene homologues waste gas, comprises the steps:
(1) absorbent is mixed with by ion-type additive and the water with phenyl ring, and mass percentage concentration is 10wt% ~ 70wt%, and the described ion-type additive with phenyl ring is C6H5(CH2)XSO3 -, wherein x is 5 ~ 9；
(2) joining in reactor by the absorbent prepared, reaction temperature controls at 20 ~ 60 DEG C, passes into the waste gas containing benzene homologues, and waste gas flow speed control benzene homologues in 50 ~ 500mL/min, waste gas is removed as oil phase.
Present invention waste gas purification process key containing benzene homologues is in that: (1) alkane carbon number x selects 5 ~ 9, is not as long in this interval alkane carbochain formed, thus the microemulsion that absorbent is formed after absorbing benzene homologues gas is more stable；(2) utilizing the ion-type additive with phenyl ring as absorbent, according to similar compatibility principle, the phenyl ring in inner side can tightly adsorb the phenyl ring in the triphen passing in absorbent so that more preferably, clearance is higher for assimilation effect.
Detailed description of the invention
The present invention will be further described by the examples below.In the present invention, wt% is mass fraction.
Embodiment 1
(1) preparation of absorbent: weigh the 60g ion-type addition of C with phenyl ring6H5(CH2)6SO3 -, add 90g water, stir 10min, be configured to the mass percentage concentration absorbent at 40wt%；
(2) joining in reactor by the absorbent prepared, reaction temperature controls at 50 DEG C；
(3) passing into concentration is 2000mg/m3Dimethylbenzene gas, control gas flow rate is 100mL/min, and the persistent period is 12h, and the clearance of xylol is 89wt%.
Embodiment 2
(1) preparation of absorbent: weigh the 50g ion-type addition of C with phenyl ring6H5(CH2)4(CH3)3NBr, adds 35g water, stirs 10min, is configured to the mass percentage concentration absorbent at 60wt%；
(2) joining in reactor by the absorbent prepared, reaction temperature controls at 35 DEG C；
(3) passing into concentration is 2000mg/m3Benzene gas, control gas flow rate is 400mL/min, and the persistent period is 12h, and the clearance of benzene is 91wt%.
Comparative example 1
Method preparation described in embodiment in CN101259360A absorbs liquid, passes into the benzene with same concentrations of the present invention and dimethylbenzene gas, CN101259360A and the inventive method to the benzene of same concentrations and the clearance of dimethylbenzene in Table 1.
The clearance contrast of table 1 benzene and dimethylbenzene
| Absorbing material | CN101259360A clearance, wt % | Clearance of the present invention, wt % |
| Dimethylbenzene | 80 | 89 |
| Benzene | 82 | 91 |
From table 1, the inventive method is to clearance apparently higher than CN101259360A of the benzene of same concentrations and the clearance of dimethylbenzene.
Claims (1)
1. the purification method containing benzene homologues waste gas, comprises the steps: that (1) absorbent is mixed with by ion-type additive and the water with phenyl ring, and mass percentage concentration is 10wt% ~ 70wt%, and the described ion-type additive with phenyl ring is C6H5(CH2)XSO3 -, wherein x is 5 ~ 9；(2) joining in reactor by the absorbent prepared, reaction temperature controls at 20 ~ 60 DEG C, passes into the waste gas containing benzene homologues, and waste gas flow speed control benzene homologues in 50 ~ 500mL/min, waste gas is removed as oil phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210404077.6A CN103768894B (en) | 2012-10-23 | 2012-10-23 | A kind of purification method containing benzene homologues waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210404077.6A CN103768894B (en) | 2012-10-23 | 2012-10-23 | A kind of purification method containing benzene homologues waste gas |
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| CN103768894A CN103768894A (en) | 2014-05-07 |
| CN103768894B true CN103768894B (en) | 2016-06-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378264A (en) * | 1992-12-02 | 1995-01-03 | Aluminum Company Of America | Microemulsion formation in offgas scrubbing |
| JP2003311124A (en) * | 2002-04-22 | 2003-11-05 | Mitsubishi Heavy Ind Ltd | Exhaust gas treatment method and apparatus |
| CN101259360A (en) * | 2007-12-17 | 2008-09-10 | 昆明理工大学 | Purifying method of waste gases containing benzenes compounds |
| CN101259361A (en) * | 2008-03-24 | 2008-09-10 | 昆明理工大学 | Method for using microemulsion to purify organic waste gases |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7540904B2 (en) * | 2005-11-17 | 2009-06-02 | Basf Catalysts Llc | Hydrocarbon adsorption slurry washcoat formulation for use at low temperature |
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2012
- 2012-10-23 CN CN201210404077.6A patent/CN103768894B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378264A (en) * | 1992-12-02 | 1995-01-03 | Aluminum Company Of America | Microemulsion formation in offgas scrubbing |
| JP2003311124A (en) * | 2002-04-22 | 2003-11-05 | Mitsubishi Heavy Ind Ltd | Exhaust gas treatment method and apparatus |
| CN101259360A (en) * | 2007-12-17 | 2008-09-10 | 昆明理工大学 | Purifying method of waste gases containing benzenes compounds |
| CN101259361A (en) * | 2008-03-24 | 2008-09-10 | 昆明理工大学 | Method for using microemulsion to purify organic waste gases |
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