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:
Jul. 14, 1981
Filed:
Jun. 30, 1980
Junior A Gearhart, Oklahoma City, OK (US);
Kerr-McGee Refining Corporation, Oklahoma City, OK (US);
Abstract
A process for separating a solvent from a bituminous material by pressure reduction without carry-over of bituminous material. The fluid-like phase comprising bituminous material and solvent is reduced in pressure by passage through a pressure reduction valve and introduced into a steam stripper. The pressure reduction vaporizes part of the solvent and also disperses a mist of fine bituminous particles in the solvent. The solvent and mist are withdrawn from the steam stripper and introduced into a separation zone wherein they are caused to flow countercurrently to another stream of fluid-like bituminous material. The fluid-like bituminous material contacts the solvent and scrubs the fine bituminous material particles therefrom. The solvent is withdrawn and recovered. The fluid-like stream containing the bituminous particles can be recycled until the concentration is such that additional particles are not separated from the solvent after which a portion is bled off and fresh fluid-like material is added.