PROCESS FOR INCREASING A DIESEL RECOVERY FROM A FRACTIONATION COLUMN
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United States of America Patent
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Apr 28, 2016
app pub date -
Oct 24, 2014
filing date -
Oct 24, 2014
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Abstract
A process for recovering diesel from fractionation column bottoms stream. The bottoms stream from the fractionation column is passed to a vacuum column. The vacuum column includes various packed sections which separate the diesel in the fractionation column bottoms from the other components. The diesel will rise as though the lower sections of the vacuum column, and most will condense in the upper section of the vacuum column. A recovered diesel from the vacuum column can be combined with the diesel recovered from the fractionation column. A venturi jet nozzle, such as a liquid jet eductor, can be used with a sidecut pumparound stream from the fractionation column as a motive fluid to achieve the desired operating pressure of the vacuum column.
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