Title: Method for separating m-xylene and ortho-xylene from mixed xylene and ethyl benzene
Application Number: 95112773 Application Date: 1995.11.20
Publication Number: 1136549 Publication Date: 1996.11.26
Approval Pub. Date: Granted Pub. Date: 1999.08.04
International Classifi-cation: C07C7/13,C07C15/08
Applicant(s) Name: Jinling Petrochemical Co., China Petrochemical Co. Address: 210042
Inventor(s) Name: Long Yingcai
Attorney & Agent: TIANG FUKUI
Abstract:
     Under the adsorption condition the gaseous mixed xylene and ethyl benzene pass through the absorbtion bed filled with MFI type zeolite molecular sieve absorbent, which selectively absorbs the ethyl benzene and p-Xylene, the remainder of absorption are meta xylene and ortho-xylene. The absorbed ethyl benzene and p-Xylene are desorbed by desorbing agent or by pressure reduction under the desorption condition. By conventional rectification method the metaxylene and ortho-xylene with puriness larger than 99.5% are made out separately from the remainder of absorption.
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