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Application of Membrane filter press in oil refinery

Application of Membrane filter press in oil refinery

Filter presses are widely used in degreasing and refining edible oils, such as such as in removing stearin from palm oil. With the improvement of people’s living standards, the quality of edible oil has further increased. Defatted edible oil is more beneficial to people’s health, because saturated fatty acids make people fat, and cause vascular diseases. So what is oil degreasing? Simply speaking, it is an oil refining process to remove stearin.

At present, in the oil refinery, the most commonly used degreasing equipment is the automatic membrane filter press. Our filter press is specially designed for oil refineries. It combines various functions: membrane squeeze, open-hidden flow discharging, oil washing, air blow, anti-static design, etc. The comprehensive use of these functions greatly improves the production efficiency of an oil refinery.

Membrane Filter Press Manufactured By Safi Sazan Safa Company

Membrane Filter Press Manufactured By Safi Sazan Safa Company

How does it work? First, according to the different melting points of various stearin (fatty acid triglycerides), the crude oil in the crystallization tank will be cooled at low temperature, so that the high melting point stearin can be crystallized. Then, the oil is pumped into the diaphragm filter press. Inside the machine, the clear edible oil is discharged through the filter clothes, and the semi-solid stearin is blocked inside. After that, the membrane filter plates will be inflated by high-pressure compressed air. At the same time, the filter cakes are further squeezed. In this way, oil fractionation is finished. Due to the high viscosity of stearin, it is necessary to use hot oil to rinse the filter plate and filter cloth, so that the filter cloth can be regenerated. This dry extraction process by our membrane filter press is not only suitable for palm oil, but also for other oils, such as sesame oil, corn oil, rapeseed oil, and so on. This technology can improve the recovery rate of liquid oil, the most important, it brings commercial benefits to the oil refining plants.

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