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:
Jan. 13, 2015
Filed:
Sep. 21, 2012
Applicant:
Shell Oil Company, Houston, TX (US);
Inventors:
Evert Van Der Heide, Amsterdam, NL;
Munro MacKay, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 37/00 (2006.01); C12P 7/16 (2006.01); C12P 7/04 (2006.01); C12P 7/10 (2006.01); C13K 13/00 (2006.01);
U.S. Cl.
CPC ...
C13K 13/002 (2013.01); Y02E 50/16 (2013.01);
Abstract
A xylan-containing feed is contacted, in the first reactor essentially operated at plug flow, with an aqueous solution of an acid at a temperature in the range from equal to or more than 140° C. to equal to or less than 210° C. to produce an intermediate product. Then, the intermediate product is contacted, in the second reactor which comprises a continuously stirred tank reactor, with an aqueous solution of an acid at a temperature in the range from more than 130° C. to equal to or less than 200° C. to produce a final product.