Digester

Digester Function and Working Method

The Digester operates by physically breaking down the loose fruits through a combination of mechanical agitation and thermal treatment. The fruits are fed into the digester, where they are subjected to intense mixing by a set of mixing blades. The mechanical action of the blades, combined with the heat generated by the process, helps to rupture the fruit cells, releasing the oil trapped within. This makes the oil more accessible for the subsequent screw pressing stage.

Digester Material and Construction

The Digester is constructed from either carbon steel or stainless steel 304. Carbon steel provides robustness and durability, while stainless steel 304 offers excellent corrosion resistance and is suitable for applications where hygiene and material purity are critical.

Digester Key Features

• Function: Digestion of loose fruits before screw press oil extraction.

• Material: Carbon steel or stainless steel 304.

• Outside Diameter: Available in 1500 mm and 1650 mm.

• Mixing Blades: Equipped with 5 sets of mixing blades.

• Driver Model: Motor coupled to a gear reducer by a belt; the gear reducer output shaft is connected to the main shaft.

• Capacity: 3500 liters and 4500 liters options.

• Power: Motor with 1450 rpm, offering power options of 30 kW and 37 kW, operating at 380 V and 50 Hz.

• Rotational Speed: Operates at a rotational speed of 24 rpm.

Digester Performance Advantages

• Efficient Digestion: The combination of mechanical agitation and thermal treatment ensures thorough breakdown of fruit cells, enhancing oil release and improving extraction efficiency in subsequent processes.

• Durable and Corrosion-Resistant: The use of carbon steel and stainless steel 304 materials ensures long-term reliability and minimal maintenance requirements.

• Uniform Mixing: The 5 sets of mixing blades ensure thorough and uniform mixing of the fruit material, leading to consistent digestion and oil release.

• Reliable Operation: The motor and gear reducer drive system provides consistent and powerful agitation, ensuring stable operation.

• Flexible Capacity: Multiple capacity and power options make the Digester suitable for operations of various scales, from medium to large-scale palm oil processing facilities.

Digester Applications

The Digester is widely used in palm oil mills and processing plants. It is typically installed after the sterilization and threshing processes to prepare the loose fruits for efficient oil extraction. Its design and specifications make it suitable for integration into both new and existing palm oil processing facilities, enhancing their overall efficiency and productivity.