METHOD FOR PROCESSING OF ANIMAL FAT INTO LIQUID FUEL Russian patent published in 2010 - IPC C11C3/04 

FIELD: technological processes.

SUBSTANCE: invention is related to the field of industrial waste processing, in particular in food industry. Method includes preparation of raw materials, heating, with further processing, and production of fuel. Raw materials are represented by raw materials with content of free fatty acids of 10-40%, heated at the temperature of 55-60°C, then moisture and admixtures are separated, then lightened, and processing of prepared raw materials is carried out in two stages, at the first of which raw materials are twice mixed with concentrated sulfuric acid in amount of 5% or 10% to mass of fat raw materials and ethanol or methanol for 1 hr in process of mixing, besides, after the first mixing water and alcohol are separated, and after the second mixing - mixture is maintained for 24 hr, moreover, concentrated sulfuric acid and methanol or ethanol are taken in the ratio of 20:1 in process of the first mixing with raw materials, and in process of the second mixing - in ratio of 40:1 accordingly, at the second stage - raw materials are processed with a mixture of 0.82% sodium methylate and methanol with the ratio of 6:1 accordingly for 1 hr in process of mixing, with further soaking for 8-12 hr to separate alkyl ethers of fatty acids, which represent fuel, and glycerin, besides processing at all stages is carried out at the temperature of 55-60°C.

EFFECT: invention makes it possible to reduce prime cost of liquid fuel production through processing of unused fat-containing raw materials, with fat content of 80-90%.

2 cl, 1 dwg, 2 ex