Fremgangsmåde til rektifikativ separation af (meth)acrylsyre fra en blanding indeholdende (meth)acrylsyre og lavere aldehyd
In the sepn. of (meth)acrylic acid (I) from mixts. contg. (I) as main prod. and lower aldehydes as by-prods. by rectification in a column with a distn. zone and a concn. zone, the mixt. is not supplied to the column directly. Instead, it is passed to a heated dwell vessel connected to the concn. zon...
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