Who needs phenol recovery?
Phenol waste water accumulates in many areas of plastic and resin production and in the production of alkylated phenols. The waste water volumes to be processed range from 0.5 m³/h up to 10 m³/h, whereby the chosen extraction unit depends on the waste water volume and the attendant material. With greater volume streams, extraction is performed continuously in serially connected mixer-settlers, since the technical effort is then more favorable than with the pulsed sieve plate column. Example of a built system The system shown in the illustrations processes a waste water stream of 4 m³/h. In this case, we have chosen a pulsated sieve plate column DN400 with 105 plates for the extraction. The distillation column DN500/DN450 with ordered packing works at a pressure of 0.3 bar abs. The waste water with the phenol removed, lightly overheated via a flash tank, enters the stripper DN450. The scope of supply contained the system with measurement and control devices, vacuum generator, vessels an
