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. 24, 2015
Filed:
Feb. 24, 2012
Juntao Liu, Shanghai, CN;
Weimin Yang, Shanghai, CN;
Lei LI, Shanghai, CN;
Wanmin Wang, Shanghai, CN;
Linna Zhang, Shanghai, CN;
Haifeng Song, Shanghai, CN;
Juntao Liu, Shanghai, CN;
Weimin Yang, Shanghai, CN;
Lei Li, Shanghai, CN;
Wanmin Wang, Shanghai, CN;
Linna Zhang, Shanghai, CN;
Haifeng Song, Shanghai, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Shanghai Research Institute of Petrochemical Technology, Sinopec, Shanghai, CN;
Abstract
The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h, a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.