Invention Grant
- Patent Title: High temperature paraffinic froth treatment process
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Application No.: US16105764Application Date: 2018-08-20
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Publication No.: US10954448B2Publication Date: 2021-03-23
- Inventor: William Nicholas Garner , Alvaro Blanco , Guillaume Viguie , Randy Paine , Jiangying Wu , Julio Gomez , Eduardo Fernandez , Matthew Armour
- Applicant: CANADIAN NATURAL RESOURCES LIMITED
- Applicant Address: CA Calgary
- Assignee: CANADIAN NATURAL RESOURCES LIMITED
- Current Assignee: CANADIAN NATURAL RESOURCES LIMITED
- Current Assignee Address: CA Calgary
- Agency: Parlee McLaws LLP
- Agent Susan Rancourt
- Main IPC: C10G1/04
- IPC: C10G1/04

Abstract:
A high temperature paraffinic froth treatment (HTPFT) process utilizes an unheated flash vessel as a first stage of solvent recovery in a paraffinic solvent recovery unit (PSRU) to minimize asphaltene precipitation and fouling in subsequent stages of solvent recovery. The HTPFT may utilize a heat pump circuit for heat integration in the PSRU where a first stage of solvent recovery is at a lower temperature than a second stage of solvent recovery. Froth entering froth separation vessels can be heated using heat in a tailings stream using a heat pump. Froth separation vessels used to separate froth for collecting a bitumen-containing overflow utilize a collector pot and conventional feedwell combination, or a combination of a collection ring and nozzle arrangement for reducing disturbance in the vessel and improving collection of the overflow.
Public/Granted literature
- US20190055474A1 HIGH TEMPERATURE PARAFFINIC FROTH TREATMENT PROCESS Public/Granted day:2019-02-21
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