1. In practice degumming section have more influence on product quality, if colloid removal effect is not good, can make the corn oil back to the color. And the content of colloid can affect the effect of stripping .
2. Do the alkali refining with purity of 99% solid alkali.
3. Crude corn oil has high impurity in pressing and extraction process, suggest to let stand for precipitation before the degumming and alkali refining, reduce the impurity content of corn oil, to improve the separation effect of disc separator, to control the impurity content in corn oil below 0.2%.
4. The temperature in deodorization section shoulds not be too high it’s better to control it at about 230 ℃.
5. After deodorization section, the refined corn oil must be cooled, then can put in storage. To control the storage temperature below 30 ℃ in winter, summer under 35 ℃, prevent the corn oil color back.
6.To improve the corn oil revenue, reduce the production cost, the acid value of the alkali refining should be controlled in 0.2 0.25 mg/g (KOH).
7.In order to improve the dewaxing process of filtration rate and the effect of dewaxing, Recommend to use diatomite as the filter aid instead of perlite.
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