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:
May. 12, 2020
Filed:
Dec. 04, 2017
Shell Oil Company, Houston, TX (US);
Evert Van Der Heide, Amsterdam, NL;
Pieter Huizenga, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
The invention provides a process for the preparation of ethylene glycol and 1,2-propylene glycol from starting material comprising one or more saccharide, wherein the process comprises the steps of: i) providing the starting material and hydrogen to a first reactor and reacting said starting material and hydrogen therein in the presence of a solvent and a first catalyst system comprising a retro-aldol catalyst composition and a hydrogenation catalyst composition; ii) continuously removing a first reactor product stream from the first reactor, said first reactor product stream comprising ethylene glycol, 1,2-propylene glycol and in the range of from 2 to 40 wt % of sugar alcohols; iii) contacting said first reactor product stream in a second reactor in the presence of hydrogen with a second catalyst system comprising at least a hydrogenation catalyst composition; and iv) converting a portion of the sugar alcohols in the second reactor into ethylene glycol and/or 1,2-propylene glycol to provide a second reactor product stream comprising ethylene glycol, 1,2-propylene glycol and in the range of from 10 to 80% of the amount of sugar alcohols present in the first reactor product stream.