Process of separation of glyoxylic acid from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid
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United States of America Patent
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Jul 9, 2013
Grant Date -
Dec 9, 2010
app pub date -
Jan 21, 2009
filing date -
Jan 25, 2008
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Abstract
The invention relates to a process for separating glyoxylic acid starting from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid, comprising a step of countercurrent steam stripping of the reaction medium in order to obtain, on the one hand, a gas phase containing the volatile hydrochloric acid and, on the other hand, a liquid phase containing the purified glyoxylic acid.
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