Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (3): 1276-1283.DOI: 10.16085/j.issn.1000-6613.2020-0859

• Chemical processes and equipment • Previous Articles     Next Articles

Progress and prospects on the thermochemical cleaning of oily sludge

ZHANG Nan1(), WANG Yujing1, LIU Shejiang1(), ZHANG Kai2   

  1. 1.School of Environmental Science&Engineering, Tianjin University, Tianjin 300350, China
    2.Tianjin TEDA Greening Group Co. , Ltd. , Tianjin 300457, China
  • Received:2020-05-19 Online:2021-03-17 Published:2021-03-05
  • Contact: LIU Shejiang

含油污泥化学热洗技术研究现状与进展

张楠1(), 王宇晶1, 刘涉江1(), 张凯2   

  1. 1.天津大学环境科学与工程学院,天津 300350
    2.天津泰达绿化集团有限公司,天津 300457
  • 通讯作者: 刘涉江
  • 作者简介:张楠(1995—),女,硕士研究生,研究方向为含油污泥处理。E-mail:zn19951028@163.com
  • 基金资助:
    天津市重点研发科技支撑重点项目(19YFZCSF01090)

Abstract:

Oily sludge is a complex composition system containing oil, solid particles, heavy metals, and water, which is produced in the process of petroleum production and processing. It has been included in the list of hazardous wastes due to its highly stable and difficult for treatment. There is a large amount of oily sludge in China, and untreated external discharge will cause serious environmental pollution. The oil production and processing enterprises have invested a lot of resources in the treatment of oily sludge, and have developed several types of technologies, such as thermochemical cleaning, pyrolysis, temperature and pressure conditioning, microbial treatment, etc. Among them, thermochemical cleaning has the advantages of high oil recovery rate, low residue oil content rate, low cost, etc. This paper summarizes the domestic and international oily sludge treatment standards, and describes the research progress of thermochemical cleaning technology with focusing on the influence of detergent types and concentrations, hot washing temperature, hot washing time, mixing speed, liquid-solid ratio and other factors on the treatment efficiency of oily sludge. The future development direction of thermochemical cleaning technology is proposed to provide reference for the development of thermochemical cleaning technology for oily sludge treatment.

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

摘要:

含油污泥是石油生产与加工过程产生的含有油、固体颗粒、重金属、水等的复杂组成体系,其稳定性高、处理难度大,已被列入危险废物名录。我国含油污泥产生量大,未经处理外排会对环境产生严重污染,各石油生产及加工企业均投入较大的人力、物力进行含油污泥的处理,形成了热洗、热解、加温加压调理、微生物处理等技术,其中热洗具有油回收率高、残渣含油率较低、成本低廉等优点。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,提出了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

CLC Number: 

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