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. 04, 2018
Filed:
Jan. 25, 2017
Fort Hills Energy L.p., Calgary, CA;
FORT HILLS ENERGY L.P., Calgary, CA;
Abstract
A process for operating a bitumen froth treatment operation in turndown mode includes adding solvent to bitumen froth to produce diluted bitumen froth and separating it into diluted bitumen and solvent diluted tailings and in response to a reduction in bitumen froth flow recirculating part of the diluted bitumen into the bitumen froth and returning part of the solvent diluted tailings into the step of separating. A method for turndown of separation vessel for PFT includes sustaining the feed flow to vessel; maintaining solvent-to-bitumen ratio in the diluted bitumen froth; and retaining water, minerals and asphaltenes in a lower section of the vessel while sustaining an outlet flow. The use of diluted bitumen derived from PFT as a viscosity modifying agent of the bitumen froth and an associated process are also provided.