Process and apparatus for hydroprocessing with two product fractionators
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United States of America Patent
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Aug 7, 2018
Grant Date -
Aug 27, 2015
app pub date -
Feb 26, 2014
filing date -
Feb 26, 2014
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Abstract
A process and apparatus are disclosed for recovering hydroprocessing effluent from a hydroprocessing unit utilizing a hot stripping column and a cold stripping column. A light fractionation column fractionates naphtha from kerosene predominantly from a cold stripped stream. A heavy fractionation column fractionates diesel from unconverted oil predominantly present in a hot stripped stream. Only the hot hydroprocessing effluent is heated in a fired heater prior to entering the heavy fractionation column, resulting in substantial operating and capital savings.
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