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Abstract
During the process of crude oil refining, large amounts of oily sludge, which contains oil, benzenes, phenols, and other odorous and toxic substances, can be produced in refineries. All of these substances are legally classified as hazardous waste. However, oily sludge is rich hydrocarbons with high potential energy and the average calorific value is above 3,900 kcal/kg. Based on the characteristics of oily sludge in refineries, a new type of oily sludge treating agent has been developed that converts the oily sludge into fuel. This agent can achieve the rapid gel breaking and dehydration of oily sludge. Without adhesion and agglomeration, the dehydrated sludge with higher calorific value is easy to be dried and burned. The experimental results indicate that the burning ash and exhaust gas produced from the combustion can meet the requirements of environmental emissions standards in China after the oily sludge treated by fuels-based technology. This process has expanded a new technical method for the harmless disposal and utilization of oily sludge.