How to Prepare Palm Kernel Cake?
In the palm oil processing industry chain, palm kernel cake is an important byproduct of oil palm kernels after pressing or extraction for palm kernel oil extraction. As a high-protein animal feed ingredient and industrial raw material, the quality of palm kernel cake directly depends on the upstream palm kernel processing technology and equipment. Achieving high-efficiency, low-residual-oil, and low-kernel-breakage modern production is a focus for many palm kernel oil processing companies. As a well-known enterprise in China’s grain and oil machinery industry, Henan Huatai Cereals and Oils Machinery Co., Ltd. provides leading solutions to the industry with its innovative specific palm fruit oil presses and complete sets of equipment.
Core Steps in Palm Kernel Cake Preparation
The preparation of palm kernel cake is not a simple pressing process, but a systematic engineering project involving physical changes and precise control. The complete palm kernel cake preparation process typically includes three major stages: kernel pretreatment, pressing and separation, and cake post-treatment.
1) Sterilization and Dehulling Pretreatment
Before pressing, the palm fruit must undergo sterilization treatment to inhibit the increase of lipases, facilitating subsequent dehulling. Regarding this stage, Henan Huatai Oil Machinery’s “Automatic Control Vertical Palm Fruit Sterilization Tank” has obtained a national utility model patent. This equipment uses a PLC automatic control system, boasting advantages such as high automation, steam saving, and convenient operation, ensuring that the palm fruit reach optimal material condition before entering the pressing section.
2) Crushing and Conditioning
Palm kernels need to be crushed into uniform particles and dried. Typically, the moisture content of the palm kernels needs to be adjusted to 6%-8%, which is crucial for improving pressing efficiency and ensuring cake formation. Huatai Oil Machinery’s pretreatment solutions cover crushing, softening, and pressing equipment, with a processing capacity of 10-1000 tons/day, and can be customized for the material characteristics of palm kernels.
3) Mechanical Pressing (Core Stage)
This is the core of palm kernel cake production. After conditioning, the palm kernels enter the oil press, where the oil is separated under high pressure. The extruded solid portion is the palm kernel cake.
Double-Helix Pressing Technology: Henan Huatai Oil Machinery’s “Palm Kernel Oil Press” employs a unique double-helix structure (two screws, one left-handed and one right-handed), with helical blades featuring a constant diameter, variable pitch, and variable thickness design. This design generates significant propulsion force and compression ratio within the pressing chamber, ensuring uniform material pressure.
“Inverted Cone” Oil Path Design: Several inverted cone-shaped holes are drilled into the pressing cage. This innovative design allows for smoother oil flow while effectively preventing cake residue from clogging the oil path, significantly increasing the oil yield.
Hydraulic and PLC Control: The equipment is equipped with a hydraulic cylinder and a pushing device at the rear, combined with a PLC controller, allowing for real-time adjustment of cake thickness and pressure to ensure stable cake formation quality.
4) Post-Processing of Palm Kernel Cake
If the cake discharged from the palm kernel oil press undergoes a secondary pressing process, its form is typically powder or flakes. These cakes need to be collected by conveying equipment and stored in a cake storage facility. If used for high-end animal feed, they also need to be pulverized or pelletized to improve palatability and reduce transportation costs. Some palm kernel oil production lines also employ solvent extraction technology to further reduce residual oil in the cake to below 0.5%, producing higher-quality defatted palm kernel meal.
How to Evaluate the Quality of Palm Kernel Cake Preparation?
In industrial production, key indicators for evaluating the quality of a palm kernel cake preparation process include:
1) Residual Oil Rate in Dry Cake: Lower residual oil indicates higher oil extraction efficiency and better storage stability of the cake. Huatai Oil Machinery’s equipment significantly reduces residual oil in the cake residue.
2) Palnut Crushing Rate: During the palm kernel oil pressing process, if the equipment design is inappropriate, excessive crushing of the palm kernel shell can mix into the oil, increasing refining difficulty, or into the cake, affecting feed absorption. Huatai equipment effectively controls the palm kernel crushing rate by optimizing the spiral structure.
3) Protein Denaturation Degree: A reasonable pressing temperature can retain more protein nutrients in the cake. Using hydraulic cold pressing or low-temperature palm kernel oil pressing technology can better protect the protein.
Huatai Oil Machinery’s Technological Advantages and Industry Recognition
In the palm processing field, Henan Huatai Cereals and Oils Machinery Co., Ltd. is not only an equipment manufacturer but also a process integrator.
1) Extended Lifespan: The auger body utilizes special materials and processes, significantly improving hardness and wear resistance, resulting in a significantly longer lifespan compared to similar foreign products.
2) Low Residual Oil Advantage: The equipment operates stably, producing excellent residual oil content in the oil cake.
3) Convenient Maintenance: The housing features a partition design, a compact structure, and is easy to disassemble and maintain.
Furthermore, to meet the market demands of different investment scales, Huatai Oil Machinery has also developed complete sets of palm oil extraction equipment suitable for small and medium-sized enterprises, addressing the pain point that small investors find it difficult to enter the industry due to complex processes and large investments.
Conclusion
Producing high-quality palm kernel cake requires a combination of scientific processes and high-performance specialized equipment. From sterilization tanks to twin-screw oil presses and post-processing systems, Henan Huatai Cereals and Oils Machinery Co., Ltd., with its patented technology, solid mechanical manufacturing foundation, and process designs reviewed by authoritative experts, is providing global palm oil processing companies with efficient, energy-saving, and low-residue solutions.
If you are planning to build a new palm kernel pressing plant, or wish to upgrade your existing palm kernel oil production line to reduce residual oil in the oil cake and increase product added value, contacting us for customized process design and equipment quotes will be an important step towards efficient production.
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