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:
Dec. 27, 2011
Filed:
Jul. 25, 2007
James N. Mccoy, Houston, TX (US);
Paul F. Keusenkothen, Houston, TX (US);
Alok Srivastava, Allsworth Park, SG;
James E Graham, Baytown, TX (US);
James N. McCoy, Houston, TX (US);
Paul F. Keusenkothen, Houston, TX (US);
Alok Srivastava, Allsworth Park, SG;
James E Graham, Baytown, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A process is described for producing deasphalted steam cracker tar comprising feeding steam cracker tar to a vacuum pipestill (VPS) including a flash zone separated from a zone comprising trays by at least one annular entrainment ring and obtaining as an overheads a deasphalted tar product and as a bottoms an asphaltenic heavy tar product. Also according to the invention, there is a system for the upgrading of tar comprising said VPS with at least one annular entrainment ring.