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:
Jan. 09, 2018
Filed:
May. 24, 2012
Shinichiro Yanagawa, Tokyo, JP;
Yuichiro Fujiyama, Tokyo, JP;
Yasuyuki Iwasa, Tokyo, JP;
Ryoji Ida, Tokyo, JP;
Susumu Yasui, Yokohama, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Akira Utatsu, Fujisawa, JP;
Shinichiro Yanagawa, Tokyo, JP;
Yuichiro Fujiyama, Tokyo, JP;
Yasuyuki Iwasa, Tokyo, JP;
Ryoji Ida, Tokyo, JP;
Susumu Yasui, Yokohama, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Akira Utatsu, Fujisawa, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
CHIYODA CORPORATION, Tokyo, JP;
Abstract
A method for producing xylene from feedstock oil includes a cracking/reforming reaction step of bringing the feedstock oil into contact with a catalyst to produce monocyclic aromatic hydrocarbons; a separation/recovery step of separating and recovering, from a product obtained by the cracking/reforming reaction step, a fraction A containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 75° C. or higher and a 90 vol % distillation temperature of 140° C. or lower, a xylene fraction containing xylene, and a fraction B containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 145° C. or higher and a 90 vol % distillation temperature of 215° C. or lower; and a xylene conversion step of bringing a mixed fraction obtained by mixing the fractions A and B with each other into contact with a catalyst containing a solid acid to convert the mixed fraction into xylene.