Process for Energy Recovery in Manufacturing Cellulose Esters
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Jul 11, 2013
filing date -
Jul 11, 2013
priority date (Note) -
Abandoned
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Abstract
Integration of an acid recovery system in the manufacturing of cellulose esters may include heat recovery from a carboxylic acid recovery distillation column by solvent extracting a weak acid stream to form a first overhead stream and a first bottoms stream; distilling the first overhead stream in a distillation column to form a second overhead stream and a second bottoms stream; sending at least a portion of the second overhead stream to a heat exchanger via a process inlet; sending a boiler feed water make up stream to the heat exchanger via a water inlet; and cooling the at least a portion of the second overhead stream in the heat exchanger, such that the at least a portion of second overhead stream exits the heat exchanger via a process outlet and the boiler feed water make up stream exits the heat exchanger via a water outlet.
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