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:
Nov. 18, 2014
Filed:
Sep. 01, 2011
Birbal Chawla, Cherry Hill, NJ (US);
Bryan E. Hagee, Glassboro, NJ (US);
Larry A. Green, Mickleton, NJ (US);
Frank P. Di Sanzo, Cherry Hill, NJ (US);
Birbal Chawla, Cherry Hill, NJ (US);
Bryan E. Hagee, Glassboro, NJ (US);
Larry A. Green, Mickleton, NJ (US);
Frank P. Di Sanzo, Cherry Hill, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Two quantitative separation approaches to fractionate de-asphalted oils (DAOs) into seven classes of compounds (saturates, 1-4ring-aromatics, sulfides, and polars). In the first step (named as 'SGS') of present invention, the DAO of a petroleum vacuum resid is separated in to four classes of compounds, namely saturates, aromatics, and sulfides. In this first step of separation, about 3 grams of a DAO can be separated. Whereas in the second step (named as 'ARC' separation) of invention, only less than 300 mg of the aromatic fraction obtained in “SGS” (described above) can be further fractionated at very low temperature (about −40 degrees centigrade) into 4 fractions, namely 1-ring, 2-ring, 3-ring, and 4-ring aromatics. The present invention protocol is suitable for a wide range of compositionally different DAOs of petroleum vacuum resids.