Chemistry: natural resins or derivatives; peptides or proteins; – Natural resins or derivatives – Tall oil or derivative used as starting material in process,...
Patent
1993-11-04
1995-10-03
Seidleck, James J.
Chemistry: natural resins or derivatives; peptides or proteins;
Natural resins or derivatives
Tall oil or derivative used as starting material in process,...
530205, 530206, 530209, 530233, B01D 1702
Patent
active
054553288
ABSTRACT:
The invention relates to acidification of soap, wherein the acidification is performed with a sodium bisulphite solution produced by absorbing the SO.sub.2 entrained in the flue gases obtained from the combustion of odor gases derived from a chemical pulp mill into an alkaline sodium solution which is NaOH or oxidized white liquor, or with a sodium bisulphite solution which is NaHSO.sub.3 -containing mother liquid obtained from SO.sub.2 or NaHSO.sub.3 acidification of soap. The acidification can be conducted in one or more steps and by the cross-current and/or counter-current method by recycling the Na.sub.2 SO.sub.3 mother liquid obtained from the acidification.
REFERENCES:
patent: 2430029 (1947-11-01), Pollak et al.
patent: 3762989 (1973-10-01), Timpe
"Tall Oil Soap Recovery" from Tall Oil, Pulp Chemical Association, New York, 1981.
Koistinen Jukka
Mattelmaki Esko
Sarkkinen Kari
Tanner Teemu
Vuorikari Olavi
LT-Dynamics Oy
Seidleck James J.
Truong Duc
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