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. 26, 2021
Filed:
Oct. 30, 2017
Shell Oil Company, Houston, TX (US);
Juben Nemchand Chheda, Houston, TX (US);
Jean Paul Andre Marie Joseph Ghislain Lange, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
Disclosed is a process for the extraction of furfural. The process includes subjecting a composition comprising furfural, water, at least one acid and an aromatic solvent, with a boiling point higher than that of furfural, to a first separation step in a first liquid-liquid separator providing a first organic phase and a first aqueous phase; conveying the first organic phase along a first line to a distillation column and subjecting the first organic phase to a distillation step providing a top stream comprising furfural and a bottom stream comprising the aromatic solvent; subjecting the first aqueous phase and a portion of the bottom stream to a second separation step providing a second organic phase; conveying the second organic phase along a second line which either feeds its contents into the first line or into the distillation column and subjecting the resultant mixture to said distillation step.