The vacuum melting technology and practice of beef tallow was introduced. The practice results showed that the vacuum melting process of beef tallow included raw material treatment, crushing, premelting, vacuum melting, oil residue separation, centrifugal separation, pressing and cake cooling. Dual shaft differential stirring predissolving tank, horizontal closed stirring tank and horizontal screw centrifuge could be used in vacuum melting process of beef tallow. The processing capacity of a single production line increased from 35 t/d to 70 t/d. The acid value of the product was lower than 1.5 mg KOH/g, the peroxide value was lower than 3 mmol/kg, the appearance was clear, transparent, light yellow, and had the unique flavor of beef tallow. The natural gas consumption reduced from 48 Nm3/t to 42 Nm3 /t. |