Palm oil refining equipment oil dehulling process, palm oil dehulling process is divided into cold dehulling process and hot dehulling process, the two treatment methods are different, but because of the different treatment equipment and use, we choose different dehulling process. To produce various types of palm oil with less investment. Next, let’s know the details of the two processes.
Palm oil refining equipment cold dehulling process, the traditional palm oil dehulling process is cold dehulling process, after preliminary treatment, drying in the drying tower from hot air heating to about 10% water content, and then storage warehouse stay 24-72H, crushing at ambient temperature, 4-6 petals were broken.
The crushed palm was separated in first stage sieve and suction separator, and the crushed palm skin with kernels and crushed palm were separated in the second stage sieve and suction separator. The whole palm separated by the two-stage separator is returned to the crusher for crushing. The palm kernels are softened and sent to the follow-up process. The palm skin is collected and processed.
The characteristics of this process are that the palm skin dried and cooled is soft, easy to peel, and the crushing degree is large. The palm kernels contained in the palm skin should not be separated and cleaned, and the cold bean kernels after peeling need to be reheated and softened to increase steam consumption.
Thermal peeling technology of palm oil refining equipment has been developed and popularized rapidly this year. There are many forms of thermal peeling red coat of palm oil. After treatment, palm oil is directly heated and dried in fluidized bed, so that the surface temperature reaches 75-92 degrees Celsius and the moisture content of palm is about 9%. This is mainly for heating palm skin and surface layer, which is crisp and easy to crack. Then the soybean half-broken is divided into two flaps by roll crusher, and falls into the impact machine to loosen the palm skin from the kernels by impact machine. The palm skin is peeled and separated by suction separator. After partial peeling, the semi-granular palm is broken into the required granularity by tooth roll crusher, and then the second peeling is carried out by impact machine and multi-stage impact and multi-stage suction separator. Skin separation, palm kernels separated to the next process, palm skin collection and then sent to the palm skin warehouse, this process compared with the cold peeling process, the cycle is shorter, a short time of high temperature treatment reduces the deterioration of oil and protein in palm oil denaturation.
The powder degree of crushed hot palm decreases, which will be more conducive to the separation of kernels and reduce the content of kernels in the skin. Hot palm pellets after peeling can be rolled directly or softened for heating before rolling, which will greatly reduce the steam consumption in the production process.
The above two refining equipments have high dehulling efficiency, complex process and high investment cost. They are suitable for the production of cold pressed oil, low temperature oil, low temperature soybean meal and high protein soybean meal. In general, the requirements for dehulling are not high. Simplified dehulling process can be adopted.