Industrial-Grade Animal Fat Primary Rendering

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Food-Grade Animal Fat Primary Rendering

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Batch Cooker

Pressure cooking and vacuum drying for sterilization, fat extraction, and safe processing. Typical operation reaches 140 °C and 0.5 MPa, fully enclosed to minimize oxidation, contamination, and odor emissions.

Batch Cooking for Sterilization and Fat Recovery

The Liande Batch Cooker converts animal by-products (viscera, bones, fatty tissues, minced meat, casings) into tallow, oil, and protein meal under controlled temperature and pressure.

The enclosed design minimizes oxidation, while vacuum drying speeds moisture removal for downstream pressing and separation.

Batch Cooker Working Principle

  • Heating and Sterilization

    The chamber is heated by steam jackets and a steam-driven agitator to raise the temperature above 140 °C. A working pressure of up to 0.5 MPa is then maintained during the sterilization cycle, ensuring effective sterilization and the breakdown of keratin molecules.

  • Vacuum Drying

    After sterilization, the system switches to vacuum mode, accelerating moisture removal before discharge into a buffer bin.

  • Separation

    The processed material is then pressed to separate tallow from meat-and-bone meal, ensuring maximum fat recovery and stable product quality.

Key Benefits of Our Batch Cooker

  • Pressure Sterilization in One Vessel

    Combines high-temperature sterilization and cooking in a sealed chamber for safe and efficient processing.

  • Vacuum Drying for Faster Moisture Removal

    Vacuum mode accelerates drying and improves downstream pressing efficiency.

  • High Heat-Transfer Agitation System

    Steam jackets and an inflatable rotor shaft maximize heat transfer and processing performance.

  • Fully Enclosed Odor-Control Operation

    Sealed construction and exhaust treatment reduce odor emissions and contamination risks.

  • Heavy-Duty Drive and Low Maintenance

    Chain coupling transmission ensures stable operation with reduced maintenance requirements.

Specifications

Batch Cooker
Model
Batch Cooker
Max Temperature Up to 140°C
Max Pressure 0.5 MPa
Process Duration ≥4 hours
Operation Pressure cooking / Vacuum drying
Heating Medium Steam
Drive Chain coupling / reducer
Controls Temperature/pressure/level interlocks

Batch Cooker Applications in Rendering Plants

  • Meat and poultry rendering
  • Feather hydrolysis and sterilization
  • Pre-treatment before fat pressing and meal separation

FAQs

Common questions about batch cooking, sterilization, and drying.

Contact Us
What temperature and pressure does the cooker typically run at?
Up to 140 °C and 0.5 MPa during the sterilization cycle.
Can it handle feathers or high-moisture materials?
Yes. It uses pressure cooking for hydrolysis and sterilization, followed by vacuum drying.
What batch capacities are available?
Capacity can be customized based on your production requirements and material characteristics.
How are gases treated during operation?
All exhaust passes through a multi-stage treatment system to ensure safe emissions.
What's the maintenance requirement?
The cooker uses wear-resistant seals, a stable chain drive, and optional CIP. Recommended service intervals are provided with each installation.