Process for separating sulfuric acid and carboxylic acids

Distillation: processes – separatory – Including addition of water or steam – To distillation column

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203 15, 203 92, 203DIG8, 562521, 260419, 159DIG8, B01D 334

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048389986

ABSTRACT:
The amount of water required to effect efficient separation of a mixture of sulfuric acid and carboxylic acids by distillation, is reduced, by diluting the mixture while in the distillation column in a prescribed manner with sufficient water to provide a water:sulfuric acid mole ratio of about 1:1. The heat generated by the internal dilution reduces the energy requirement of the column. Feeding the dilution water to the column below the feed mixture is a key element of the process.

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