Process for the separation of glycols using glycerol
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United States of America Patent
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Apr 2, 2019
Grant Date -
Nov 23, 2017
app pub date -
Dec 4, 2015
filing date -
Dec 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A process for the separation of monoethylene glycol (MEG) and 1,2-butanediol (1,2-BDO) from a first mixture including MEG and 1,2-BDO, the process including providing the first mixture of MEG and 1,2-BDO as a feed to a distillation column. The process also includes providing a feed comprising glycerol to the distillation column above the first mixture. The process also includes operating the distillation column at a temperature in the range of from 50 to 250° C. and a pressure in the range of from 0.1 to 400 kPa. The process also includes removing a stream comprising MEG and glycerol as a bottoms stream from the distillation column and removing a stream comprising 1,2-BDO above the point at which the feed comprising glycerol is provided to the distillation column.
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