The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Aug. 25, 1998
Jeevan S Abichandani, Voorhees, NJ (US);
Jeffrey S Beck, Burlington, NJ (US);
Stephen H Brown, Princeton, NJ (US);
Ronald J Cimini, Sewell, NJ (US);
Ivy D Johnson, Lawrenceville, NJ (US);
Selma Kwok, Voorhees, NJ (US);
Dimitris K Liguras, Mantua, NJ (US);
David L Stern, Mount Laurel, NJ (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A method for minimizing the loss of xylenes in an ethylbenzene conversion/isomerization process by adding toluene to the feedstock. The concentration of toluene in the feedstock is increased by co-feeding toluene or by recycling toluene separated from the ethylbenzene conversion reactor effluent. The increased toluene concentration reduces the loss of xylenes during the ethylbenzene conversion reaction and under preferred operating conditions increases the amount of xylenes in the product.