Process method of purifying and recycling mixed organic waste gas

A technology of organic waste gas and treatment methods, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, etc., can solve the problems of high operating costs, complicated processes, and low recovery efficiency, and achieve easy separation, recycling, and simple process routes , high absorption efficiency
CN101108296AInactive Publication Date: 2008-01-23上海同济华康环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海同济华康环境科技有限公司
Publication Date
2008-01-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to chemical industry and waste gas process field, in particular providing a process method which mixes organic waste gas purifying and resource recovery. The specific procedure is that: make the mixed waste gas pass through a filter to be filtered, and then enters into a single-seat multilevel absorption tower and contacts with a packing layer and a liquid distribution device; when the series of the single-seat tower is 3, the second-grade liquid distribution device adopts a kind of absorbent which is a mixing liquid comprising the mixing liquid which is pumped in after cooled by a heat interchanger at the bottom of the adsorption tower and the mixing liquid which generates in the middle groove of the third-grade; the third-grade liquid distribution device adopts a kind of absorbent which is a mixing liquid comprising fresh absorbent, the regenerating liquid recycled by a mixing liquid separation device and the collecting liquid collected by a collecting hopper of third-grade; when the series of the single-seat tower is N and is larger than 3, all grades of absorbent from the second grade to the N minus 2 is a mixing liquid comprising a mixing liquid generated in the middle groove of the next grade and a collecting liquid collected by the collecting hopper on the same grade, the absorbent of the N minus grade is the colleting liquid collected by the collecting hopper of the N minus 1 grade, the absorbent of the N grade is a mixing liquid comprising of pumped fresh absorbent and the regenerating liquid recycled by the mixing liquid separation device. The fresh absorbent is an environment-protected organic solvent with high boiling point, strong lipophilicity and low volatility. The invention can recycle a plurality of organic infectant in waste gas, the technics procedure is simple, practical, and the operation cost is low.
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Description

technical field

[0001] The invention belongs to the fields of chemical industry and waste gas treatment, and specifically provides a method for purifying and recycling mixed organic waste gas. Background technique

[0002] At present, for mixed organic waste gas, such as waste gas containing organic pollutants such as dimethylformamide (DMF), toluene and methyl ethyl ketone in the synthetic leather industry, the purification of waste gas is mainly concentrated in the terminal treatment. The mature technologies mainly include: catalytic combustion technology, Activated carbon adsorption technology and water and DMF solvent absorption purification technology. Among them, the catalytic combustion technology can simultaneously treat DMF, toluene, and methyl ethyl ketone in the exhaust gas, but the operating cost is high, and it belongs to the elimination type technology, which cannot realize the resource recovery of organic matter. Although activated carbon adsorption technolog...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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