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:
Oct. 08, 2013
Filed:
Nov. 02, 2012
Syncrude Canada Ltd. IN Trust for the Owners of the Syncrude Project, Fort McMurray, CA;
Xin Alex Wu, Edmonton, CA;
Sujit Bhattacharya, Edmonton, CA;
Syncrude Canada Ltd., Fort McMurray, CA;
Abstract
A process for recovering solvent from spent oil sands solids is provided, comprising drying the solids using superheated steam to vaporize solvent and water; compressing and condensing the vapors in a first heat exchanger (hot side) to produce condensates, comprising primarily condensed hot water, and uncondensed vapors; separating condensed hot water and solvent from the uncondensed vapors in a first separator; flowing the hot water through the first heat exchanger (cold side) to produce near-saturated steam; and superheating the near-saturated steam in a second heat exchanger to produce the superheated steam for drying the solids. Uncondensed vapors from the first separator can be further condensed in a third heat exchanger to produce warm water, recovered solvent and uncondensed off gas, which can be separated in a second separator. Some of the warm water is combined with the hot water to produce the near-saturated steam for superheating. The off gas is oil scrubbed or combusted prior to release to the atmosphere.