Method for washing of crude tall oil soap from the sulfate pulping process
AssigneeLinotek Oy
InventorAke A. Johansson
Life of this patent
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Abstract
A method for washing of crude tall oil soap obtained from the sulfate pulping process using alkalized spent acid from tall oil acidulation as washing liquid by mixing the crude soap and the washing liquid coming from the process and by cooling the mixture in a separation tank by either stirring with a slowly moving agitator or by circulating the soap or soap mixture through a pump and a cooler.
Claims3
A method for washing crude soap from the sulphate cellulose process using alkaline mother liquor from tall oil cooking as washing liquid, comprising mixing the crude soap and the washing liquid vigorously at the temperature of 60.degree.-80.degree. C. that they have when they are coming from said sulphate cellulose process, transferring the mixture thus obtained into a separation tank, effecting separation between soap and washing liquid in the tank by a combined agitation and cooling operation at a temperature of 40.degree.-50.degree. C., whereby the mixture of the soap and the washing liquid is cooled to said temperature, and thereafter separately removing the washed soap and the washing liquid from the tank.
Dependencies are inferred from the claim text.