Industrial Animal Fat Processing: Wet Rendering and Dry Rendering
Industrial animal fat processing is built around two primary thermal routes: wet rendering and dry rendering. The correct configuration depends on feedstock type, output fat quality target, and downstream application.
Wet rendering heats animal tissue in the presence of water or steam at controlled temperatures, typically between 70°C and 130°C depending on fat quality requirements. The water phase supports phase separation and helps preserve fat quality, making wet rendering the preferred route for food-grade tallow and lard. Centrifugal separation and clarification stages downstream reduce moisture and solids carryover before storage routing.
Dry rendering processes material at higher temperatures without added water, relying on the natural moisture content of the raw material. It is commonly used for inedible fat and tallow destined for industrial, oleochemical, or biofuel applications where a higher free fatty acid (FFA) level is acceptable. Mechanical dewatering via screw press and downstream filtration stabilize the fat stream before storage.
Both routes share the same core process stages: feedstock preparation and buffer feeding, thermal processing for fat release, mechanical separation, clarification and filtration, and exhaust and vapor treatment. The specific equipment configuration at each stage — cooker type, separation equipment selection, drying approach, and scrubbing — is determined by feedstock variability, output standards, and site constraints.
Our modular line covers both rendering routes. Individual process blocks are selected and scaled to match your plant's operational targets without requiring a full-line replacement.
