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Method for absorbing vacuum tailed gas in production of polystyrene

A polystyrene and vacuum technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as failure to meet discharge requirements, few mixtures, and inability to separate mixtures, improve absorption rate, and reduce investment. , the effect of high efficiency

Inactive Publication Date: 2007-11-21
江苏中信国安新材料有限公司
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Problems solved by technology

[0002] The bulk polymerization process is used to produce polystyrene resin. The polymerization process is carried out in a vacuum state. Under the action of vacuum, a small amount of styrene tail gas will be volatilized and discharged at the vacuum terminal port, which will have a certain impact on the air in the work area. The treatment of vacuum exhaust gas is only to use water to absorb it and then empty it, that is, to discharge the vacuum exhaust gas directly into the water. The mixture of water and styrene produced by water absorption cannot be separated. Although the mixture is small, it still does not meet the discharge requirements.

Method used

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  • Method for absorbing vacuum tailed gas in production of polystyrene

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Embodiment Construction

[0010] The absorption method of vacuum tail gas in the production of polystyrene, the vacuum tail gas is passed into the white oil tank 1, the overflow gas of the white oil tank 1 enters the lower part of the absorption tower 2 and contacts the white oil sprayed down in the countercurrent, and the absorption tower 2 is equipped with a ceramic ring packing, The gas from the top of the absorption tower 2 is adsorbed by activated carbon 3 and then emptied; a connecting pipe 9 is arranged between the white oil tank 1 and the upper sprinkler head of the absorption tower 2, a circulating pump 4 is installed on the connecting pipe 9, and a white oil feeding pipe 5 Connected to the pipeline between the white oil tank 1 and the circulating pump 4; the outlet of the circulating pump 4 is provided with another discharge pipe 6 to be connected with the polystyrene production process; the upper part of the white oil tank 1 is provided with an overflow pipeline 7, which is connected with the ...

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Abstract

The invention is concerned with the absorbing method for vacuum tail-gas in the polystyrene production, it is: the tail-gas passes the white oil slot, the overflow gas of the white oil slot enters the bottom of the absorbing tower and countercurrent touches with the spray white oil, the gas from the absorbing tower absorbs by the activated carbon and then vents. The invention can absorb over 98% of the tail-gas during the production.

Description

technical field [0001] The invention belongs to the technical field of tail gas treatment, in particular to a method for absorbing vacuum tail gas in polystyrene production. Background technique [0002] Polystyrene resin is produced by bulk polymerization process. The polymerization process is carried out in a vacuum state. Under the action of vacuum, a small amount of styrene tail gas will be volatilized and discharged at the vacuum terminal port, which will have a certain impact on the air in the working area. The treatment of vacuum exhaust gas only adopts water absorption and then venting, that is, the vacuum exhaust gas is directly discharged into water and discharged. The mixture of water and styrene produced by water absorption cannot be separated. Although the amount of the mixture is small, it still fails to meet the emission requirements. SUMMARY OF THE INVENTION [0003] In order to overcome the above-mentioned shortcomings, the present invention provides a met...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/72B01D53/78B01D47/06
Inventor 居汉坤杭盘大
Owner 江苏中信国安新材料有限公司
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