A METHOD OF SEPARATING, FROM A MIXTURE OF BLACK LIQUOR AND TALL OIL SOAP PRODUCT, CONCENTRATED PORTIONS OF TALL OIL SOAP PRODUCT AND ARRANGEMENTS FOR SAID CONCENTRATED TALL OIL SOAP PRODUCT AND/OR SEPARATED BLACK LIQUOR

摘要

A continuous method and an arrangement for separation of crude tall oil (CTO) from black liquor. The method involves an initial separation within a tank and/or within a centrifugal separator, and processing of the thus separated tall oil soap product by acidulation and/or splitting, followed by further separation, e.g. by centrifugation. The black liquor fraction may be processed for further CTO retrieval, before evaporation and feeding to a recovery boiler.