This article is only an overview section pretreatment production processes, detailed information, please enter the double spike machinery official website: www.ssyzjx.com leaching leaching section outlines the legal principles applied oil is extracted, choose a grease can be dissolved organic solvent, pretreated with oil contact - soak or spray, so the oil is dissolved in fat oil out of a method. In this way it will be dissolved out with a solvent composition of a solution of the oil, this solution is called mixed oil. Utilizing selected solvents and oils of different boiling point, the mixed oil was evaporated, stripping the solvent evaporated, leaving oil, to give crude oil. Steamed out of the solvent vapor condensed recovery, recycling. Applications of modern oil processing plant, for some low-oil-oil, such as soybean, using direct leaching process; for some high oil content of fuel, such as rapeseed, peanut, advantages and disadvantages of the use of the process after the first press leaching leaching Legal advantages of oil cake meal containing residual oil is less, the oil rate, low cost, high cost, and high quality meal for a good feed industry feeding effect; drawback is poor quality crude oil, solvents used with flammable and has a certain degree of toxicity. Summary leaching pretreatment process material sent by the scraper conveyor auger seal leaching plant, fall into the pan in the extractor is leaching solvent or mixture of oil spray, drain, wet fall off the meal bucket meal By entering the steam offline scraper conveyor auger through the seal. After removal of the solvent was distilled off and baked, finished meal supplied to the library. After the internal extractor by rich mixture after oil filter into the mixing tank, and then into the first long tube evaporator after separation of the solvent vapor into the second long tube evaporator, again separated by solvent vapors flowing into the stripper to remove residual solvent, the resulting crude oil into the hair tank leaching, playing to the refining plant. From the first and second long tube long tube evaporator, a stripper, a pan extractor, steam offline out of the solvent vapor into the condenser condensate, liquid condensate flow into the trap after the conduct watershed, the separation of the solvent Back solvent turnover library. From the trap and solvent turnover libraries discharged waste water into the boiling water tank were discharged after cooking seal pool. The upper part of each device free gas in the final condenser condensate collection, re-entering the absorber is not condensable gases trapping solvent again. Oil extraction processes include leaching processes; wet meal off steam process; mixed oil (negative) evaporation process; solvent condensate recovery process, paraffin recycle these five steps. My company's oil extraction process are flat turn leaching and leaching of two kinds of ring. The past two years have been more than a dozen tons or more of turnkey projects put into use. Practice has proved that consumption indicators leaching production line design company, installation, reliable operation, energy-saving measures fully, water, electricity, gas, solvents and other low, low residual oil meal, a good meal and refined crude oil quality. Technology has reached the international advanced level, the leading professional equipment.