Distillation Process Particularly Suitable for Crude Oils that are Difficult to Desalt and for Opportunity Crude Oils, and Associated Devices and Column
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United States of America Patent
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Jun 11, 2020
app pub date -
Jun 7, 2017
filing date -
Jun 7, 2017
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Abstract
The invention relates to a petroleum product distillation method, comprising a step of distilling said products in a crude atmospheric distillation (CDU) or vacuum distillation (VDU) column (1, 1′), itself comprising a plurality of draw-off trays, including an upper draw-off tray (6, 6′), which is the draw-off tray the closest to the top (3, 3′) of said column (1, 1′), the method further comprising a step of drawing off the distillate (7, 7′) present at said upper draw-off tray (6, 6′), and being characterized in that it also comprises a step of separating said so drawn-off distillate (7, 7′) into, on the one hand, a primary fraction (9) including precipitated chlorinated salts and, on the other hand, a remaining fraction (10).
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