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:
May. 23, 2017
Filed:
Mar. 25, 2011
Hideki Minami, Fujisawa, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Atsuro Nagumo, Kawasaki, JP;
Susumu Yasui, Yokohama, JP;
Shinichiro Yanagawa, Tokyo, JP;
Hideki Minami, Fujisawa, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Atsuro Nagumo, Kawasaki, JP;
Susumu Yasui, Yokohama, JP;
Shinichiro Yanagawa, Tokyo, JP;
CHIYODA CORPORATION, Kanagawa, JP;
JX NIPPON OIL & ENERGY CORPORATION, Tokyo, JP;
Abstract
A method for producing aromatic hydrocarbons, the method including: (a) bringing a feedstock oil such as an LCO into contact with an aromatic production catalyst to obtain a reaction product containing aromatic hydrocarbons, (b) separating the reaction product into a tower top fraction and a tower bottom fraction using a distillation tower, (c) separating the tower top fraction into a crude aromatic fraction containing an LPG fraction, and an off-gas containing hydrogen, (d) separating the crude aromatic fraction containing an LPG fraction into an LPG fraction and a crude aromatic fraction, (e) separating the off-gas containing hydrogen into hydrogen and an off-gas, and (f) using the hydrogen obtained in step (e) to hydrotreat the crude aromatic fraction, thereby obtaining an aromatic fraction.