In the production process of oil field and petrochemical enterprises, due to plant operation, poor transportation conditions and criminals theft and other reasons, resulting in a large amount of oily sludge. These oily sludge contains large amounts of petroleum hydrocarbons and harmful chemicals, causing serious harm to air, water and soil, threatening the health of human body, and which contained in the crude oil is not effective use, resulting in a lot of waste. Therefore, oil sludge must be resource reco...