This article is only an overview section pretreatment production processes, detailed information, please enter the double spike machinery official website: www.ssyzjx.com this product is usually a series of oil refining crude oil refining, depending on the requirements and purposes, will not be required and harmful impurities are removed from the oil, and get to meet certain standards of refined oil. Oil refining of crude oil is usually carried refined, depending on the requirements and purposes, unwanted and harmful impurities are removed from the oil, and get to meet certain standards of refined oil. A vegetable oil refining, without review by the press, leaching or water generation method was called crude oil. The main components of crude oil is a mixture of fatty acid triglycerides (commonly known as neutral oil). In addition to neutral oil, the crude oil also contains non-ester material (collectively referred to as impurities), the type, nature, status, can be broadly divided into mechanical impurities, fat-soluble and water-soluble impurities, contaminants and other three categories. Second, the purpose of refining oil refining of crude oil is usually carried refined crude oil in the presence of impurities, not only affects the value and safety of oil storage, and deep processing of difficult, but refined, but not all of the oil impurities are removed, but in which the consumption of detrimental impurities, storage, industrial production, etc. removed, such as gossypol, proteins, phospholipids, mucus, water, etc. is removed, and useful impurities, such as tocopherols, sterols, etc. but also to retain . Therefore, depending on the requirements and purposes, unwanted and harmful impurities out of the oil, and get to meet certain standards of refined oil is oil refining purposes. Third, the refining methods: Depending on the operating characteristics and raw materials, oil refining methods used can be divided into three kinds of mechanical, chemical, and physical and chemical methods. We used the physical and chemical methods. Fourth, the refined type: batch, semi-continuous, completely continuous. 1-10 tons of used intermittently, 20-50 ton used semi-continuous, more than 50 tons, used the whole continuous. Fifth, refining processes: degumming, deacidification, bleaching, deodorization, dewaxing / fractionation.