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PURIFICATION OF AQUEOUS EFFLUENTS FROM THE MANUFACTURE OF ACRYLONITRILE WITH RECOVERY OF CYANHYDRINES


JUMANCA VALERIU, CONSTANTIN MARIA-MAGDALENA, ALEXA IRINA-CLAUDIA
UNIVERSITY OF BACĂU, FACULTY OF ENGINEERING, TCPA, CALEA MARASESTI 157, RO-5500 BACĂU, ROMANIA

Issue:

SCSCC6, Volume II

Section:

Volume II (2001)

Abstract:

The present paper presents a process of purification of residual waters coming from the manufacture of acrylonitrile with recovery of cyanhydrines. This process consists in separating cyanhydrines in a watery concentrate through superheat-expansion-condensation and alkaline split, respectively, in sodium cyanide and in carbonylic constituent. Carbonylic constituent is successively separated by steamed dragging in order to avoid some methods of minor importance.

Keywords:

residual waters, decomposition of lactonitrile, superheating and expanding, alkaline split.

Code [ID]:

CSCC6200102V00S01A0018 [0001346]

Full paper:

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