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:
Apr. 04, 2017
Filed:
Mar. 18, 2013
Bharat Petroleum Corporation Ltd, Mumbai, IN;
Pragya Rai, Surajpur, IN;
Jose Nehamiah, Surajpur, IN;
Chiranjeevi Thota, Surajpur, IN;
Dattatraya Tammannashastri Gokak, Surajpur, IN;
Poyyamani Swaminathan Viswanathan, Surajpur, IN;
Shashikant Shukla, Maharashtra, IN;
Buddhadeb Kundu, Maharashtra, IN;
Satish Kumar Goel, Maharashtra, IN;
BHARAT PETROLEUM CORPORATION LTD, Mumbai, IN;
Abstract
The present invention relates to a process for obtaining food grade hexane, comprising: fractionating a hydrocarbon feed having a boiling point in the range of 50° C. to 140° C. to obtain a hydrocarbon fraction having boiling point in the range of 63° C. to 69° C. and having 3%-15% (wt/wt) of aromatic compounds content; extracting the hydrocarbon fraction by counter current solvent extraction using sulfolane as a solvent to obtain a first raffinate phase; extracting the first raffinate phase by co-current solvent extraction using sulfolane as a solvent to obtain a second raffinate phase; and washing the second raffinate phase with water to obtain a food grade hexane containing less than 100 ppm of aromatic compounds.