INTEGRATED PROCESS FOR REDUCING SOLIDS FROM THE PRODUCT OF SOLVENT EXTRACTION OF OIL SANDS BITUMEN
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United States of America Patent
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Issued Date -
Nov 19, 2015
app pub date -
May 15, 2014
filing date -
May 15, 2014
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Abstract
A method is provided for producing a marketable bitumen product having low solids and essentially no water. The method can be integrated into existing solvent extraction processes for extracting bitumen from mined oil sand. A high-solids diluted bitumen is produced from a solvent extraction process and then mixed with a light solvent (LS) stream in at least a first mixer to produce a diluted bitumen-LS mixture. The diluted bitumen-LS mixture is subjected to separation in at least a first separator to produce low-solids diluted bitumen and high-solids asphaltene-rich tails. The LS is removed from the low-solids diluted bitumen to produce the marketable bitumen product.
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