General process and classification of oil leaching

The oil extraction process can be divided into single leaching method, pre pressing leaching method and extrusion expanding leaching method according to the pretreatment method of oil entering the leaching device. It can also be divided into tank group leaching, horizontal rotary leaching, annular leaching and so on according to the type characteristics of the extractor. But whether they are the difference between the infusion oil or the type of the extractor, their leaching process is basically the same. These basic processes include four processes, namely, leaching process, mixed oil treatment process, wet meal processing process and solvent recovery process. However, the difference between the equipment in the process and the difference in the process conditions resulted in the difference between the process technical indicators and the production results achieved in the actual production process. Therefore, in order to achieve good production results, it is necessary to study its production technology deeply and study the influence of various factors on leaching production and the relationship between them.

Only through the process of crushing or leaching, and without refining and other processing of crude oil, contains more colloid, free fatty acids, colored substances, etc., can not be eaten directly, can only be used as raw material of refined oil