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:
Nov. 06, 2012
Filed:
Mar. 27, 2008
Zheng LI, Beijing, CN;
Qiang Fu, Beijing, CN;
Chaogang Xie, Beijing, CN;
Minggang LI, Beijing, CN;
Anguo Mao, Beijing, CN;
Lisheng LI, Beijing, CN;
Genquan Zhu, Beijing, CN;
Fengmei Zhang, Beijing, CN;
Yi Bin Luo, Beijing, CN;
Zheng Li, Beijing, CN;
Qiang Fu, Beijing, CN;
Chaogang Xie, Beijing, CN;
Minggang Li, Beijing, CN;
Anguo Mao, Beijing, CN;
Lisheng Li, Beijing, CN;
Genquan Zhu, Beijing, CN;
Fengmei Zhang, Beijing, CN;
Yi bin Luo, Beijing, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Research Institute of Petroleum Processing, Sinopec, Beijing, CN;
Abstract
The present invention provides a fluidized catalytic process for production of dimethyl ether from methanol, wherein said process is carried out in a reactor in which the catalyst is in a fluidized state. Said process comprises the following steps of (1) feeding the methanol feedstock via two or more locations selected from the bottom, lower part, middle part and upper part of the reactor, contacting with the catalyst for preparation of dimethyl ether by methanol dehydration, carrying out the reaction of preparing dimethyl ether by methanol dehydration to obtain the reaction stream, separating said reaction stream to obtain a coked catalyst and a crude product primarily containing the target product, i.e. dimethyl ether; (2) totally or partially feeding the coked catalyst obtained in step (1) into a regenerator in a continuous or batch manner for regeneration via coke-burning, the regenerated catalyst being directly recycled to step (1) after being totally or partially cooled.