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:
Sep. 24, 2013
Filed:
Mar. 26, 2008
Xiangbo Guo, Beijing, CN;
Zheng LI, Beijing, CN;
Qiang LI, Beijing, CN;
Chaogang Xie, Beijing, CN;
Keyong Yang, Beijing, CN;
Anguo Mao, Beijing, CN;
Xueliang Chang, Beijing, CN;
Genquan Zhu, Beijing, CN;
Xiangbo Guo, Beijing, CN;
Zheng Li, Beijing, CN;
Qiang Li, Beijing, CN;
Chaogang Xie, Beijing, CN;
Keyong Yang, Beijing, CN;
Anguo Mao, Beijing, CN;
Xueliang Chang, Beijing, CN;
Genquan Zhu, Beijing, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Research Institute of Petroleum Processing, SINOPEC, Beijing, CN;
Abstract
Disclosed is a process for producing dimethyl ether from methanol, which is characterized in that the absorbing liquid used in said absorbing column is the bottom liquid of DME-fractionating column and/or bottom waste water of the methanol-recovering column. Said process can significantly reduce energy consumption of the apparatus.