Extractive distillation process and system
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United States of America Patent
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Oct 9, 2012
Grant Date -
Oct 28, 2010
app pub date -
Apr 28, 2009
filing date -
Apr 28, 2009
priority date (Note) -
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Abstract
One exemplary embodiment can be a process for minimizing a solvent in a raffinate stream of an extractive distillation column. The process can include providing sufficient separation in the extractive distillation column between a reflux stream having an effective amount of water and a stream having an effective amount of solvent. Usually, the reflux stream has no more than about 2,000 ppm, by weight, solvent based on the weight of the reflux stream.
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