| US 7,468,468 B2 | ||
| Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption | ||
| Philibert Leflaive, Mions (France); and Karin Barthelet, Lyons (France) | ||
| Assigned to Institute Francais du Petrole, Rueil Malmaison Cedex (France) | ||
| Filed on Aug. 09, 2006, as Appl. No. 11/501,227. | ||
| Claims priority of application No. 05/52.485 (FR), filed on Aug. 10, 2005. | ||
| Prior Publication US 2007/0038012 A1, Feb. 15, 2007 | ||
| Int. Cl. C07C 7/00 (2006.01) | ||
| U.S. Cl. 585—828 [585/805; 585/825; 585/820] | 13 Claims |
| 1. 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 an adsorbant;
a desorption step employing a desorbant selected from toluene, indane and mixtures thereof;
a step for separating meta-xylene from said desorbant; said process being characterized in that said adsorbant comprises a faujasite type zeolite with a water content of 0 to 1%
by weight and with an adsorption temperature of 160° C. to 180° C.
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