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:
Feb. 22, 2005
Filed:
Jun. 07, 2001
Hideaki Kumagai, Toda, JP;
Hiroki Koyama, Toda, JP;
Kenji Nakamura, Toda, JP;
Naoharu Igarashi, Toda, JP;
Masayuki Mori, Toda, JP;
Takayuki Tsukada, Toda, JP;
Hideaki Kumagai, Toda, JP;
Hiroki Koyama, Toda, JP;
Kenji Nakamura, Toda, JP;
Naoharu Igarashi, Toda, JP;
Masayuki Mori, Toda, JP;
Takayuki Tsukada, Toda, JP;
Japan Energy Corporation, Tokyo, JP;
Abstract
A heavy oil hydrorefining catalyst of the present invention is such that the total volume of pores with a diameter of 60 nm or less is at least 0.5 mL/g, and the pore diameter distribution has a broad band over a pore diameter range of 8 to 30 nm. The hydrorefining catalyst has excellent desulfurization characteristics and excellent demetalization characteristics, and its performance can be maintained over an extended period. When this catalyst is used in a hydrorefining apparatus equipped with a plurality of catalyst layers, the apparatus can be operated stably at a higher temperature than in the past without decreasing the desulfurization performance, and this also enhances the demetalization characteristics.