These equipments applies to process all kinds of low or high viscosity lubrication oils. It widely has been used in metallurgy, electric power, mine, machinery, petroleum, chemical and manufacture etc. It can eliminate water, impurties, water-solubility acid, alkali from used oil quickly and efficiently. It could improve the movement viscosity and flash point and also could restore the special characteristic of the oil. It can purify the oil which was used in the production of the cement, chemical, fertilizer. After this process, the color of separated water from oil is milk-white which oil contains heavy water-solubility acid. The color of separated water from oil is deep blue which oil contains heavy ammonia acid. The color of separated water from oil is milk-white with some snow-floating which oil contains heavy alkali.