VPS tar separation
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United States of America Patent
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Dec 27, 2011
Grant Date -
Mar 6, 2008
app pub date -
Jul 25, 2007
filing date -
Aug 31, 2006
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Abstract
A process is described for producing deasphalted steam cracker tar comprising feeding steam cracker tar to a vacuum pipestill (VPS) including a flash zone separated from a zone comprising trays by at least one annular entrainment ring and obtaining as an overheads a deasphalted tar product and as a bottoms an asphaltenic heavy tar product. Also according to the invention, there is a system for the upgrading of tar comprising said VPS with at least one annular entrainment ring.
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