Preparation of crude oil
Pretreatment of oil
The main oil plant are herb oil and woody oil two. Herb oil soybean, peanut,cottonseed, rapeseed, sesame, sunflower seeds and so on; woody oil, tea seed oil,coconut, walnut, olive oil, tung oil etc.. Incidentally, the current national regulations by using genetically modified oil edible oil must be marked "genetically modified" wordson the packaging. Pretreatments including oil cleaning, drying, peeling, cashmere,crushing, softening, flaking and cooking process. The treated oil will enter the next link, used to produce crude oil.
Preparation of crude oil production
Primary oil and edible vegetable oil press process, also is the crude oilproduction, there are two ways: press and solvent extraction. The press is a physical expression way, method of extracting oil from oil, oil production method which originated from the traditional workshop, but pressing now is industrialized operation.Leaching method is used in chemical engineering principle, a method is proposed foroil extraction from oil with food grade solvents. The development history of edible oil extraction technology from the world's point of view, oil extraction process is internationally recognized as the most advanced production technology. Leaching method is first developed and applied, in developed countries in recent years,leaching oil technology in oil production in China in a wide range of applications