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:
Jul. 05, 2016
Filed:
Mar. 23, 2012
Shinichiro Yanagawa, Tokyo, JP;
Ryoji Ida, Tokyo, JP;
Yasuyuki Iwasa, Tokyo, JP;
Masahide Kobayashi, Tokyo, JP;
Susumu Yasui, Yokohama, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Atsuro Nagumo, Kawasaki, JP;
Shinichiro Yanagawa, Tokyo, JP;
Ryoji Ida, Tokyo, JP;
Yasuyuki Iwasa, Tokyo, JP;
Masahide Kobayashi, Tokyo, JP;
Susumu Yasui, Yokohama, JP;
Yoshishige Sugi, Yokohama, JP;
Atsushi Fukui, Kawasaki, JP;
Atsuro Nagumo, Kawasaki, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
CHIYODA CORPORATION, Yokohama-shi, Kanagawa, JP;
Abstract
Provided is a method for producing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms, the method including a cracking reforming reaction step of bringing feedstock oil into contact with a catalyst to effect a reaction; a step of purifying and recovering monocyclic aromatic hydrocarbons separated from the reaction step; and (1) a step of hydrogenating a heavy fraction separated from the reaction step; a dilution step of returning a portion of the hydrogenation product as a diluent oil to the hydrogenation step; and a step of returning the hydrogenation product to the reaction step; or (2) a step of adding a diluent to the heavy fraction separated from the reaction step; a step of hydrogenating the mixture; and a step of returning the hydrogenation product to the reaction step.