Treatment of waste stream from adipic acid production

Details Treatment of waste stream from adipic acid production Treatment of waste stream from adipic acid production

1980-11-06

1982-02-23

Sever, Frank

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

203 72, 203 89, 562593, B01D 312

Patent

active

043167756

ABSTRACT:
This invention provides a process for improving the recovery of byproducts associated with the isolation of C.sub.4 -C.sub.6 dicarboxylic acids contained in a waste byproduct stream, wherein the byproduct stream is derived from an adipic acid manufacturing operation involving nitric acid oxidation of a cyclohexanone/cyclohexanol feedstream.
The main byproducts which are isolated are high purity dimethyl succinate, dimethyl glutarate and dimethyl adipate. Monomethyl esters of these dicarboxylic acids are recovered and recycled in the process.

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