THIS process which applies particularly to the &dings of McBain and his schoolon the washing of soap, and those of one of us on saponification, forms the subjectof French patents 94674142,946746 and 989596. It accomplishes continuouslysaponification, counter-current washing and fitting.In the following account the principles of these operations are described andtheir effective application in the process examined by means of a general diagramof the installation, supplemented later by such detail as is required in the developmentof the subject. Next, directions are given concerning control of the plantand the method of arriving at balances and yields. In conclusion, other mattersare considered, suchas the advantages of continuity, the flexibility of the process,the raw material changes possible and the purity of the soap.
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