Method of Processing a Bituminous Feed By Staged Addition of a Bridging Liquid
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 9, 2012
filing date -
May 18, 2011
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Abandoned
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Abstract
The present disclosure relates to a method of processing a bituminous feed. The bituminous feed is contacted with an extraction liquor to form a slurry. A bridging liquid is added to the slurry in at least two stages and solids within the slurry are agitated to form an agglomerated slurry comprising agglomerated solids and a low solids bitumen extract. The agglomerates are then separated from the low solids bitumen extract. Potential benefits may include the production of smaller and more uniform agglomerates. The former may lead to higher bitumen recoveries and the latter may improve the solid-liquid separation rate. The bridging liquid may be added in an area of relatively high shear rates. Between stages of bridging liquid addition, agglomerates may be removed.
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