Why crude palm oil refining use physical refining method?

The physical refining process of palm oil refining equipment uses the principle of direct steam distillation under high temperature and vacuum conditions to remove free fatty acids and low-molecular odor substances in oils along with steam, thereby removing free fatty acids and "off-flavors" from edible oils. the goal of.

In the edible oil refining process, the physical refining process used to process edible oil has the following characteristics compared with the chemical refining process:

1. The deacidification tower can be used to directly remove free fatty acids, significantly reducing the neutral oil loss, which can generally be as low as 1.05%~1.1% (mass), while the oil loss in alkali refining is higher than 1.4%;

2. Steam stripping can be used to directly obtain high-concentration mixed fatty acids, vitamin E, isoflavones, etc., which not only facilitates the utilization of these high value-added products, but also greatly reduces acid and alkali consumption, wastewater discharge, and environmental pollution problems. ;

3. For oils with acid value <AV14, the total refining rate is higher than that of alkali refining, the FFA content of the product can be less than 0.1%, and the flavor is good;

4. Deacidification and deodorization can be completed using the same set of equipment, saving investment;

5. Generally suitable for oils with low colloid content, such as olive oil, palm oil, peanut oil and sunflower oil, etc. However, there are still problems when used for soybean oil, rapeseed oil, etc. that have high phosphorus content and are difficult to remove. Aftertaste, anti-color and other issues that need to be resolved.

6. The crude oil pretreatment requirements are high, and the production cost is partly low in a sense, which has the advantage of high neutral oil yield.

Leading trusted manufacturer and supplier of Palm Oil Refining Machine, choose Henan Huatai, With rich experience in palm oil processing machine and refining.any need please email to info01@cnoilmachine.com