Oil
Refining
Capacity:
1)Small Plant of 0.5-30TPD
2)Big Plant of 30-100TPD
Principle:
There’re twy of refining:physical & chemical.
Physical Refining:
This means removing gum inoil during degumming process in
special method and removing FFA during deodorizing process
with steam.
Features:
1. Less oil losss and high refining ratio;
2. No waste water in the process of production;
3. More FFA is distilled out;
4. Moresuitable for oil with high acid value and low gum
impurity
Chemical Refining:
This means removing FFA in a chemical way (acid-base neutralizaion).
The produced gum and soapfoot are separated by centrifuges.
Chemical refining has following features:
1. Excellent adoptability and less requirements to oil quality;
2. The final oil quality is consistent;
3. Less clay is added into compared with pahysical refining.
Refining process can remove phospholipid, FFA, pigment,
off-flavor and other impurities. It includes the following
sections: Oil Dugumming, Oil Deacidifying, Oil Bleaching, Oil Deodorizing
and Oil Dewaxing.
Oil Bleaching: High-activity clay is added into
oil, mix and heat mixture of oil and clay to make the small
particle of pigment absorbed on the crystal of clay. At last
filtering the oil, perfect mechanism, liable performance, well
configured equipment.
Oil Deodorizing:
Most heat of bleached oil is recovered by heat exchangers, the
bleached oil is heated to the process temperature by mineral
oil or high pressure steam and then the oil enters into the
combined deodorizer, the deodorizer is a combined type: the
upper is packing structure, which is used to remove odor components
like FFA, the lower is plate type used for heat bleaching and
making product quality more consistent. Oil coming from the
deodorizer is cooled and stored after series of heat exchange,
volatile like FFA is collected and stored as by products.
Oil Dewaxing:
It can improve oil palatability, so it plays an important
role to the quality of finished oil. At the same time, dewaxing
can improve oil transparency and brightness. At present, winterizing
method is very popular to dewaxing.
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Oil Bleaching |
Oil Degumming and Alkali Refining
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Oil Deodorzing |
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Oil Dewaxing and Fraction |
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