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. 25, 2014
Filed:
Aug. 14, 2008
Eugene Marie Godfried Andre Van Kruchten, Amsterdam, NL;
Dominicus Maria Rekers, Amsterdam, NL;
Mathias Jozef Paul Slapak, Amsterdam, NL;
Eugene Marie Godfried Andre Van Kruchten, Amsterdam, NL;
Dominicus Maria Rekers, Amsterdam, NL;
Mathias Jozef Paul Slapak, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
The invention provides a process for the preparation of an alkylene glycol from an alkene. A gas composition from an alkylene oxide reactor is supplied to an alkylene oxide absorber comprising a column of vertically stacked trays or comprising a packed column. Lean absorbent comprising at least 20 wt % water is supplied to the alkylene oxide absorber and is contacted with the gas composition in the presence of one or more catalysts that promote carboxylation and hydrolysis. At least 50% of the alkylene oxide entering the alkylene oxide absorber is converted in the alkylene oxide absorber. Fat absorbent is withdrawn from the absorber, is optionally supplied to finishing reactors and/or a flash vessel or light ends stripper, and is subsequently subjected to dehydration and purification to provide a purified alkylene glycol product stream.