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:
Oct. 14, 2008
Filed:
Oct. 09, 2003
Baoping Han, Liaoning Province, CN;
Xiangchen Fang, Liaoning Province, CN;
Ronghui Zeng, Liaoning Province, CN;
Ping Wu, Liaoning Province, CN;
Mei Jin, Liaoning Province, CN;
Hongjiang Sun, Liaoning Province, CN;
Baoping Han, Liaoning Province, CN;
Xiangchen Fang, Liaoning Province, CN;
Ronghui Zeng, Liaoning Province, CN;
Ping Wu, Liaoning Province, CN;
Mei Jin, Liaoning Province, CN;
Hongjiang Sun, Liaoning Province, CN;
China Petroleum & Chenical Corporation, Beijing, CN;
Fushun Research Institute of Petroleum and Petrochemicals Sinopec, Corp., Fushun, Liaoning Province, CN;
Abstract
The present invention relates to a process for carrying our gas-liquid countercurrent processing comprising passing the liquid material and the gas reactant in countercurrent flow through the fixed bed of catalyst in a reactor, characterized in that the fixed bed of catalyst includes two or more catalyst layers, with the difference of voidage between the adjacent catalyst layers being at least 0.05. The voidages of the catalyst layers can be increased or decreased in the direction of the flow of the liquid phase. The process of the invention can be effected with an increased range of gas-liquid ratio and an improved stability and flexibility.