Abstract: As the main pollutant of petrochemical industry, the treatment of oily sludge has always troubled the enterprises. Oily sludge contains a large amount of crude oil and heavy metals and is classified as hazardous waste. If not disposed properly, it will not only cause environmental pollution, but also waste resources. The thermochemical cleaning is to use the chemical agent and hot water to act on the oily sludge to reduce the viscosity and realize the three-phase separation process of oil, water and solid. It has the advantages of convenient operation and low cost, however, the use of chemical agents may cause secondary pollution. This article summarizes and compares the oil sludge treatment standards at home and abroad, and summarizes the research progress of thermochemical cleaning technology. The effects of factors such as the type and concentration of cleaning agent, hot washing temperature, hot washing time, stirring speed, liquid-solid ratio on the treatment efficiency of oily sludge were mainly discussed. At the same time, this article describes the engineering application examples of oily sludge treatment at home and abroad, and points out the future development direction of thermochemical cleaning technology, in order to provide reference for the development of thermochemical cleaning technology.

Key words: oily sludge, thermochemical cleaning, standard, engineering applications

摘要： 含油污泥作为石油化工企业的主要污染物，其处理一直困扰着企业。含油污泥中含有大量原油和重金属等物质，被列为危险废物，如果处置不当，不仅会造成环境污染，还会浪费资源。化学热洗技术是利用化学药剂和热水共同作用于含油污泥，使其粘度降低，实现油、水、固体三相分离的处理过程，具有操作方便、成本低廉等优点，但化学药剂的使用有可能造成二次污染。本文对国内外含油污泥处理标准进行了总结对比，对化学热洗技术的研究进展进行了阐述，重点论述了清洗剂种类和浓度、热洗温度、热洗时间、搅拌速度、液固比等因素对含油污泥处理效率的影响，同时阐述了国内外含油污泥处理的工程应用实例，并指出化学热洗技术未来的发展方向，以期对含油污泥化学热洗技术的发展提供参考。

关键词: 含油污泥, 化学热洗技术, 标准, 工程应用