Inferential correction of composition for a distillation analyzer
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United States of America Patent
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Nov 7, 1995
Grant Date -
N/A
app pub date -
Dec 2, 1993
filing date -
Dec 2, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a distillation column, which for control purposes cannot tolerate the inherent dead time between analysis of consecutive samples in chromatograph analyzers, the chromatograph output is frequently corrected by inferring a dynamic correction based on the temperature change of a selected tray in the column. The dynamic correction applied to the distillation analyzer essentially eliminates the inherent dead time for obtaining a chromatograph analysis, and accordingly increased the rapidity of response of the column controls which rely on chromatograph analysis.
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