Hydrocracking process and device with reduction of polynuclear aromatic compounds
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United States of America Patent
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Oct 4, 2022
Grant Date -
Jul 5, 2018
app pub date -
Dec 21, 2017
filing date -
Dec 22, 2016
priority date (Note) -
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Abstract
In the hydrocracking process in accordance with the invention, which comprises a hydrocracking section, a high pressure hot separator and a fractionation section, upstream of the fractionation section, a stripper or reboiler column type separation column is added which treats at least a portion of the heavy effluent obtained from the high pressure hot separator. All or a portion of the bottom fraction from said column, which is rich in polynuclear aromatic compounds, is purged. At least a portion of the bottom fraction obtained from the fractionation section, which is constituted by unconverted products, is recycled to the reaction section.
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