Removal of plastic polymer fines from tallow

Details Removal of plastic polymer fines from tallow Removal of plastic polymer fines from tallow

C - Chemistry, Metallurgy

11

B

23/403, 260/499.

C11B 1/12 (2006.01) C09F 5/10 (2006.01) C11B 3/00 (2006.01) C11C 1/04 (2006.01)

Patent

CA 1146967

ABSTRACT OF THE DISCLOSURE The invention provides a system for purifying tallow. Tallow received from rendering plants typically is contaminated with suspended plastic polymer fines. According to this invention plastic polymer fines are removed from tallow containing such fines by adjusting the temperature of the tallow to just above its freezing point, and contacting the tallow in a selected organic solvent to form a solution comprising the solvent containing dissolved tallow, and particles of undissolved plastic polymer. The resulting solution is then filtered to remove the particles of undissolved plastic polymer, and the filtrate which results is treated to separate the tallow from the solvent, e.g. as by evaporating the solvent under reduced pressure. The separated solvent may be condensed and recycled to treat fresh tallow.

322466

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