Automatic control of feedstock vacuum towers
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United States of America Patent
Stats
-
Jan 16, 1990
Grant Date -
N/A
app pub date -
Jul 19, 1988
filing date -
Jul 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a fractional distillation tower which is divided into a plurality of sections by total drawoff trays, and wherein at least one fraction is withdrawn from each section. The cut point temperature between fractions is determined based on the partial pressure and temperature of the vapor in the upper portion of a section. The thus determined cut point temperature may be compared to a set point with the results of the comparison being utilized to maintain the actual cut point temperature between fractions substantially equal to the desired cut point temperature.
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Family
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Cited Art Landscape
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