Process for purifying the waste water produced in the process of

Details Process for purifying the waste water produced in the process of Process for purifying the waste water produced in the process of

1976-12-07

1978-01-03

Miles, Tim R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

210 71, 560 78, 560191, 560204, C07C 6934, C07C 6952

Patent

active

040668355

ABSTRACT:
A process for removing organic components from the waste water effluent obtained in the production of an ester plasticizer through esterification of a polybasic aliphatic or aromatic carboxylic acid with an aliphatic alcohol in the presence of a sulfuric acid catalyst, which waste water contains an alkyl hydrogen sulfate or a dialkyl sulfate, esterification reactants and esterification products, which comprises:
A. heating said waste water to a temperature above 200.degree. C under the particular prevailing pressure; and
B. thereafter thermally or mechanically removing an organic phase from an aqueous phase.

REFERENCES:
patent: 2134531 (1938-10-01), Punnett
patent: 2850440 (1958-09-01), Shader
patent: 3397121 (1968-08-01), Fitzgerald
patent: 3403079 (1968-09-01), Olivier
patent: 3661972 (1974-05-01), Biarnais
patent: 3816485 (1974-06-01), Wechsler
patent: 3849475 (1974-11-01), Biarnais et al.

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