Method for the purification of chlorine gas

Details Method for the purification of chlorine gas Method for the purification of chlorine gas

C - Chemistry, Metallurgy

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B

C01B 7/07 (2006.01) B01D 53/22 (2006.01) B01D 71/70 (2006.01) C25B 1/18 (2006.01) C25B 1/26 (2006.01) C25C 3/04 (2006.01)

Patent

CA 2176555

Method for the purification of chlorine gas with a content of until 10 weight % air, wherein the contaminated gas is supplied to the high pressure side of a membrane separator. The chlorine gas is permeated through a rubbery non-porous membrane material and the impurities withheld. The pressure ratio between the high pressure side and low pressure side of the membrane is kept at 3-7. It is preferred to use vacuum on the low pressure side. Polydimethylsiloxane is suitable as selective membrane. It is preferred to use a composite membrane.

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