C - Chemistry – Metallurgy – 11 – B
Patent
C - Chemistry, Metallurgy
11
B
260/498.6
C11B 3/06 (2006.01)
Patent
CA 1206975
ABSTRACT PROCESS FOR REFINING TRIGLYCERIDE OILS Process for refining a triglyceride oil comprising bringing the oil into contact with at least an amount of aqueous alkali solution equal to the stoichiometric amount required to neutralise the oil, forming a soapstock and separating said soapstock and oil characterised by brining the oil into contact with the aqueous alkali solution at a temperature in the range of from 40 to 140°C and forming at a temperature in the range of from 40 to 140°C a soapstock which contains with respect to the initial fatty acid content of the oil at least about 0.7 wt% of electrolyte and which comprises a member selected from the group comprising a single phase of neat soap, a binary phase mixture of neat soap and niger, a binary phase mixture of neat soap and lye and a ternary phase mixture of neat soap, lye and niger. Each of the niger, lye and neat soap phases is a single phase comprising water, electrolyte and soap. The lack of substantial amounts of free water reduces saponification and thus oil loss. The presence of niger and/lye can reduce the viscosity of the soapstock and hence aid its separation from the oil.
431223
de Laat Cornelis I.
Segers Jacobus C.
Spits Albert J.
Plc Unilever
Ridout & Maybee Llp
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