石油化工高等学校学报

石油化工高等学校学报 ›› 2022, Vol. 35 ›› Issue (3): 16-22.DOI: 10.3969/j.issn.1006-396X.2022.03.003

• 石油化工 • 上一篇    下一篇

化学清洗⁃热蒸汽气浮联合工艺处理含油污泥

沈聪(), 吴限, 杨莹, 李丽华()   

  1. 辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
  • 收稿日期:2021-03-23 修回日期:2021-04-27 出版日期:2022-06-25 发布日期:2022-07-25
  • 通讯作者: 李丽华
  • 作者简介:沈聪(1995⁃),男,硕士研究生,从事石油化学、化工领域外加剂的制备与应用研究;E⁃mail:1241057964@qq.com
  • 基金资助:
    辽宁省教育厅资助项目(2018CYY015);辽宁省地方(盘锦)创新项目(2018010398);辽宁省科技厅项目(20170006)

Treatment of Oil Sludge by Chemical Cleaning⁃Thermal Steam Air Floatation

Cong Shen(), Xian Wu, Ying Yang, Lihua Li()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2021-03-23 Revised:2021-04-27 Online:2022-06-25 Published:2022-07-25
  • Contact: Lihua Li

摘要:

建立化学清洗?热蒸汽气浮联合工艺处理含油污泥,并对联合工艺条件进行详细考察;以自主合成的WP?1为主要清洗剂,以处理后的含油污泥固相含油率评估WP?1的清洗效果。结果表明,联合工艺最佳条件为泥水质量比1 3,清洗温度80 ℃,搅拌速率200 r/min,清洗时间1.5 h,保温静置时间15.0 min,热蒸汽气浮时间1.0 h。热蒸汽气浮解决了清洗过程中密度较大的含油颗粒悬浮、沉底问题。在最佳条件处理后的含油污泥固相含油率降低到1.2%,达到了 SY/T 7301-2016中规定的含油污泥处理标准;WP?1与0.1 g硅酸钠配伍使用时除油率高达92.08%,性价比高,有很好的应用价值。

关键词: 含油污泥, 化学清洗, 热蒸汽气浮, 含油率

Abstract:

A combined chemical cleaning?thermal steam air floatation process was established to treat oil sludge,and the conditions of the combined process were investigated meticulously. Meanwhile, the self?synthesized WP?1 was taken as the main cleaning agent, and the cleaning effect of WP?1 was evaluated by the solid?phase oil content upon treatment. The results reveal that the optimal conditions for the combined process include a mud?to?water ratio of 1 3, a cleaning temperature of 80 ℃, an agitation rate of 200 r/min, cleaning time of 1.5 h, holding time of 15.0 min, and thermal steam air floatation of 1.0 h. Thermal steam air floatation solves the problem of suspending and sinking oil particles with large specific gravity in the cleaning process. Under optimal conditions, the solid?phase oil content decreases to 1.2%, meeting the oil sludge treatment standards stipulated in SY/T 7301-2016. The oil removal rate is as high as 92.08% when WP?1 is combined with 0.1 g of sodium silicate, which demonstrates a high price?performance ratio and is of good application value.

Key words: Oil sludge, Chemical cleaning, Thermal steam flotation, Oil content

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