Simulated moving bed adsorptive separation process...

Details Simulated moving bed adsorptive separation process... Simulated moving bed adsorptive separation process...

2006-12-20

2009-12-22

Nguyen, Tam M (Department: 1797)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

C585S822000, C585S826000, C422S129000, C422S141000, C422S154000, C422S155000

Reexamination Certificate

active

07635795

ABSTRACT:
Provided is a process for adsorptive separation of p-xylene from an aromatic hydrocarbon mixture comprising other isomers of xylene, and a device used therein. More specifically, the present invention provides a separation process employing simulated moving bed (SMB) adsorptive chromatography, characterized by pretreating a fluid mixture, i.e. the feed, by using single adsorption chamber so as to raise the concentration of a component to be separated, and then carrying out the simulated moving bed adsorptive separation, thereby improving productivity, and a device used therein.

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