Application of Stainless Steel Filter Press in Edible Oil Manufacturing

Edible oil is an indispensable ingredient in our daily diet and is used for cooking, seasoning, and processing food. The production of edible oil is a multifaceted process that involves several stages, including raw material selection, extraction, refining, and packaging. In the edible oil manufacturing process, a stainless steel filter press is one of the important equipment, mainly used to filter and separate solid impurities to ensure the purity of the final product. This article will introduce the specific application of stainless steel filter press in edible oil manufacturing.

Specific Application of Filter Press in Edible Oil Manufacturing

Crude Oil Filtration

After oil extraction, the crude oil obtained initially contains more solid impurities, such as plant fibers, silt, and other particulate matter. Stainless steel filter presses are used to filter the crude oil at this stage to remove these impurities so that they can enter the refining process.
The crude oil is pumped into the filter chamber of the filter press, where solid impurities are trapped by the filter cloth or filter plate, allowing the filtered oil to seep through. Once filtration is complete, the filter chamber is opened, and the residue on the filter cloth is cleaned off.

Degumming Process

Degumming is the process of removing colloids such as phospholipids from oils and fats. The filter press is used here to filter the degummed oils and fats and remove the precipitates formed by degumming.
Mix the oils and fats with water or acid to generate colloid precipitates. Pump the mixed liquid into the filter press to filter out the colloid precipitates and obtain clear oils and fats.

Decolorization Process

Activated carbon or bleaching earth is used to absorb pigments and impurities during the decolorization process, and the filter press is used to filter the decolorizer to ensure the clarity and transparency of the oil.
Mix the oil with activated carbon or bleaching earth. The mixed liquid is pumped into the filter press to filter out the activated carbon or bleaching earth to obtain the decolorized oil.

Finished Oil Filtration

After all the refining processes are completed, the final finished oil needs to be filtered through a filter press before bottling to ensure that any tiny residual impurities are completely removed.
The refined finished oil is pumped into the filter press. It is filtered through a fine filter cloth to ensure the purity of the oil.

Advantages of Stainless Steel Filter Press

Strong corrosion resistance
Stainless steel boasts exceptional corrosion resistance, effectively withstanding acids, alkalis, and salts found in edible oil. This characteristic not only prolongs the equipment’s service life but also ensures the stability and safety of the production process.

High hygiene standards
The surface of stainless steel is smooth and non-porous, and it is not easy to breed bacteria, which meets the hygiene requirements of food processing. It is easy to clean and disinfect, which can effectively prevent pollution and ensure the hygiene and safety of filtered edible oil.

Sturdy structure
The stainless steel filter press has a sturdy structure and good mechanical properties and can operate stably for a long time under high pressure and high-temperature conditions.

High-temperature resistance
In the edible oil manufacturing process, many process steps need to be carried out under high-temperature conditions. Stainless steel has good high-temperature resistance, can work stably in high-temperature environments, will not release harmful substances, and ensures the safety and environmental protection of the production process.

Environmental protection and energy saving
The stainless steel filter press has a long service life, reduces the frequency of equipment replacement, and reduces production costs. At the same time, its high-efficiency filtration performance reduces the generation of waste oil, improves resource utilization, and meets the requirements of environmental protection and energy saving.

Conclusion

Filter presses are widely used in edible oil manufacturing, covering multiple aspects, including crude oil filtration, degumming, decolorization, condensation treatment, and finished oil filtration. Through the high-efficiency filtration of the filter press, the purity and quality of edible oil can be greatly improved, ensuring that the final product meets hygiene and quality standards. In general, a stainless steel filter press has significant advantages in edible oil filtration and is an ideal equipment to ensure the quality and safety of edible oil. With correct operation and maintenance, filtration efficiency can be greatly improved.

Application of Stainless Steel Filter Press in Edible Oil Manufacturing