Process and system for recovery of asphaltene by-product in paraffinic froth treatment operations
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United States of America Patent
Stats
-
Apr 29, 2014
Grant Date -
Apr 22, 2010
app pub date -
Oct 20, 2009
filing date -
Oct 22, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for treating bitumen froth with paraffinic solvent is provided which uses three stages of separation. Froth and a first solvent are directed to a first stage at a solvent/bitumen ratio for precipitating few or substantially no asphaltenes. A first stage underflow is directed to a second stage and a first stage overflow is directed to a third stage. A second stage underflow is directed to waste tailings and the second stage overflow joins the first stage overflow. A third stage underflow is recovered as an asphaltene by-product and a third stage overflow is recovered as a diluted bitumen product. At least a second solvent is added to one or both of the second or third stages for controlling a fraction of asphaltenes in the third stage underflow. Asphaltene loss to waste tailings is minimized and asphaltenes are now recovered as asphaltene by-product.
First Claim
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Family
International Classification(s)
- 2009 Application Filing Year
- C10G Class
- 384 Applications Filed
- 277 Patents Issued To-Date
- 72.14 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C10G Class
- 10.97 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 29, 2025 |
