Patent ID: 9738842
Date: 2017-08-22
CPC Classifications: B01D,B03D,C07C,C10G,C10L,C11B,C11C,Y02E,Y02P

Claim:
1. A process for purifying a mixture comprising fat, oil and/or grease, said process comprising the steps of: (i) initial heating of the mixture so that it is flowable; (ii) acidifying the mixture; (iii) homogenising the mixture after acidification and prior to separation, wherein homogenisation comprises injecting steam into the mixture at a pressure of between 5 bar(g) (600 kPa) and 7 bar(g) (800 kPa) and agitation; (iv) separating the mixture into a solid fraction, an organic liquid fraction and an aqueous liquid fraction; (v) removing said solid and said aqueous liquid fractions from the mixture; and (vi) filtering the mixture using a rotary vacuum filter after removing said solid and said aqueous liquid fractions therefrom.