KNOWLEDGE

What factors affect the decolorization effect of refined vegetable oil?

Refined vegetable oil equipment instructions, refined vegetable oil production line price from BTMA company,Oil pressing equipment exporter.

The decolorization in the vegetable oil refining process is to improve the color of the oil and provide qualified raw material oil for the deodorization of the refined vegetable oil.

Therefore, in the refined vegetable oil process, the color standard of the decolorized oil should be formulated according to the quality requirements of the oil and its products, and strive to achieve the greatest improvement in the color of the oil with low loss.

1. Oil quality and pretreatment.

Natural pigments in oils are easy to remove, but new pigments or oxidatively fixed pigments formed during refined vegetable oil storage and extraction are generally difficult to remove. Therefore, only by improving the quality of crude oil and avoiding oil oxidation during processing can the decolorization effect be guaranteed.
The quality of the oil before refining and decolorization is also very important to the decolorization efficiency. When colloids, soap particles and suspended impurities remain in the oil to be decolorized, these impurities will occupy a part of the activated surface of the adsorbent, thereby reducing the decolorization efficiency or increasing the amount of adsorbent used.

2. The quality and amount of adsorbent.

Adsorbent is the key factor affecting the decolorization effect. Different types of adsorbents have their own characteristics. According to the specific requirements of oil decolorization, reasonable selection of adsorbent can achieve economical decolorization effect.
Activated clay is often used as an adsorbent for refined vegetable oil decolorization. Different specifications of activated clay show different properties. Its activity is affected by factors such as soil neutralization, acid treatment and water content. While expecting high activity, the influence of these factors on acid value, filtration rate and filtration loss rate should also be considered. Generally speaking, under specific decolorization conditions, the activated clay and its addition amount suitable for certain oil products can be optimized through laboratory sample tests.