The digestors are used for cooking, hydrolysis, sterilization, and drying of raw material equipment of animal origin, through heat exchange between the product and the heated surfaces inside the equipment. An efficient purge system removes condensate, ensuring high performance. The digestor can be manufactured with or without internal pressure, meeting strict international standards. They are also available with high-performance shafts or triangular paddles to enhance the process. Loading and discharge ports with pneumatic, hydraulic, or motorized operation.