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. 25, 2005
Filed:
Sep. 27, 2002
Baoliang Tian, Beijing, CN;
Puyang LI, Beijing, CN;
Chunpeng Du, Beijing, CN;
Hongfen Xu, Beijing, CN;
Haiqiang Feng, Beijing, CN;
Jingmin HU, Beijing, CN;
Jidong Gao, Beijing, CN;
Ming MA, Beijing, CN;
Baoliang Tian, Beijing, CN;
Puyang Li, Beijing, CN;
Chunpeng Du, Beijing, CN;
Hongfen Xu, Beijing, CN;
Haiqiang Feng, Beijing, CN;
Jingmin Hu, Beijing, CN;
Jidong Gao, Beijing, CN;
Ming Ma, Beijing, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry Sinopec, Beijing, CN;
Abstract
The present invention relates to a process for separating the isoprene, 1,3-pentadiene and dicyclopentadiene from a C5 cuts, comprising dimerization of the cyclopentadiene and selective catalytic hydrogenation. The second extractive rectification step can be omitted, because the alkynes are removed through selective catalytic hydrogenation prior to the extractive rectification. As a result, the solvent-recovering units can be simplified, and thus the process as a whole can be optimized. Correspondingly, the investment and energy consumption, the operation cost, and finally the production cost can be substantially reduced.