Application of Underflow Membrane Filter Press in Palm Oil Dewaxing

The wax component in palm oil will cause the oil to become turbid at low temperatures, which is not conducive to subsequent applications (such as edible oil or industrial use). In order to improve the clarity and quality of oil products, the dewaxing process has become an important part of the refining process. The membrane filter press has become an ideal equipment for solid-liquid separation during the dewaxing process with its efficient pressing performance. The following is the specific application of the underflow membrane filter press in the palm oil dewaxing process.

Application Process of Diaphragm Filter Press in Palm Oil Dewaxing

Cooling crystallization
Cool the refined palm oil to a low temperature (usually 5~10°C) to crystallize the wax components. Stir and maintain a constant temperature to form wax crystals suitable for filtration.

Filtration and separation
The cooled palm oil wax crystal suspension is sent to the undercurrent diaphragm filter press.
Initial filtration stage: The filter cloth intercepts the wax crystals and initially separates the filtrate and solid wax.
Diaphragm extrusion stage: Fill with high-pressure gas or liquid to perform secondary squeezing on the filter cake to reduce the oil content of the filter cake.

Filtrate treatment
The filtrate is clear dewaxed palm oil, which directly enters the next refining or packaging stage. The clarity of the filtrate can be monitored through a sight glass to ensure that the quality meets the standard.

Filter cake treatment
The filter cake is a mixture of solid wax crystals and a small amount of oil, which can be further processed to extract industrial wax or sold as a raw material.

Advantages of Undercflow Membrane Filter Press

Efficient dewaxing: The secondary extrusion of the diaphragm completely separates the wax crystals from the oil, reducing the residual oil in the wax crystals.
Closed operation: The undercurrent design prevents the oil from contacting the outside world, keeping the oil pure and hygienic.
High filtrate quality: A sight glass is installed on the underflow pipeline to observe the filtrate at any time. The filtered oil is clear and transparent, meeting the production standards of high-quality palm oil.
A high degree of automation: The underflow membrane filter press can be equipped with automatic plate pulling, filter cloth cleaning, and PLC control, which is suitable for continuous production.
Nutrient retention: Closed filtration and low-temperature treatment conditions ensure that the healthy components of palm oil (such as vitamin E and phytosterols) are not destroyed.

Operation and Maintenance Recommendations

Filter cloth cleaning frequency: Wax crystals may clog the pores of the filter cloth, and the filter cloth needs to be cleaned at high pressure regularly to maintain filtration efficiency.
Automation configuration: It is recommended to equip the automatic plate pulling and filter cloth cleaning system to reduce manual operation and improve production efficiency.
Wax crystal monitoring: Regularly check the oil content in the filter cake and optimize the filtering and pressing parameters.
Low-temperature operation and maintenance: Ensure the low-temperature environment of the entire process chain (cooling, transportation, filtration) to avoid temperature fluctuations that cause wax crystals to dissolve or recrystallize.

Conclusion

Through reasonable process design and equipment configuration, the dark flow membrane filter press can efficiently and stably complete the dewaxing task of palm oil, ensuring the health and nutritional value of the final product. If you need equipment selection support or technical details, please provide specific parameters for consultation!

Application of Underflow Membrane Filter Press in Palm Oil Dewaxing