Invention Grant
US07718842B2 Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant
有权
通过使用四氢化萘作为解吸剂的液相吸附分离间二甲苯与芳香烃进料的方法
- Patent Title: Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant
- Patent Title (中): 通过使用四氢化萘作为解吸剂的液相吸附分离间二甲苯与芳香烃进料的方法
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Application No.: US11501230Application Date: 2006-08-09
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Publication No.: US07718842B2Publication Date: 2010-05-18
- Inventor: Philibert Leflaive , Karin Barthelet
- Applicant: Philibert Leflaive , Karin Barthelet
- Applicant Address: FR Rueil Malmaison Cedex
- Assignee: Institut Francais du Petrole
- Current Assignee: Institut Francais du Petrole
- Current Assignee Address: FR Rueil Malmaison Cedex
- Agency: Millen, White, Zelano & Branigan, P.C.
- Priority: FR0552486 20050810
- Main IPC: C07C7/12
- IPC: C07C7/12
Abstract:
The invention concerns a process for separating meta-xylene from a hydrocarbon feed comprising isomers containing 8 carbon atoms, comprising: a step for bringing said feed into contact with a faujasite type zeolite adsorbant, the percentage of water in the adsorbant being in the range 0 to 8% by weight and the adsorption temperature being from 25° C. to 250° C.; a desorption step employing a solvent selected from tetraline and its alkylated derivatives; a step for separating meta-xylene from the desorbant.
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