油田含油污泥热洗处理技术研究

发布时间：2018-05-07 08:50

  本文选题：油田 + 含油污泥　； 参考：《东北石油大学》2015年硕士论文

【摘要】：含油污泥是石油化工行业在生产过程中产生的固体废弃物,尤其是在油田生产中,它不仅对油田环境造成严重破坏,而且极大的浪费了原油资源,采取适宜的技术对含油污泥及时有效处理,尽可能多的回收原油资源十分重要。本文以大庆油田含油污泥为研究对象,研究热洗技术处理含油污泥的工艺条件,并且制备了三种不同类型的絮凝剂对含油污泥进行调质,分别是有机阳离子型絮凝剂、无机高分子型絮凝剂、无机-有机复合型絮凝剂,通过单因素和正交实验确定制备的最佳工艺条件,并应用于热洗技术处理含油污泥中。热洗技术处理含油污泥研究结果表明,按液固比4:1,加入现场破乳剂与絮凝剂复配调质,热洗温度50℃,体系pH=8,搅拌速度140r/min,热洗时间30min,热洗次数2次,在最佳条件下对含油污泥进行热洗处理,含油污泥脱油率达到82.83%。有机阳离子型絮凝剂的实验研究结果表明,以三乙烯四胺(TETA)、环氧氯丙烷(ECH)、三乙醇胺(TEA)为原料,制备有机阳离子型絮凝剂,最佳制备工艺条件为:n(ECH):n(TEA)=4:1,m(TETA)/m(TEA+ECH)=3%,反应温度60℃,反应时间6h,在最佳制备条件下制备的絮凝剂,对含油污泥脱油率达到68.97%,与破乳剂复配对含油污泥脱油率为82.83%;无机高分子型絮凝剂的实验研究结果表明,以硅酸钠、硫酸铁、硫酸镁、硫酸锌为原料,制备无机高分子型絮凝剂:聚硅酸铁镁锌(PSFMZ),最佳制备工艺条件为:n(Fe):n(Mg):n(Zn):n(Si)=1:1:1:2,反应温度30℃,反应时间30min,在最佳制备条件下制备的絮凝剂,对含油污泥脱油率达到82.79%;无机-有机复合型絮凝剂的实验研究结果表明,以玉米淀粉、氢氧化钠(NaOH)、阳离子醚化剂3-氯-2-羟丙基三甲基氯化铵(CHPTAM)、聚合硫酸铁(PFS)为原料,制备无机-有机复合型絮凝剂:PFS-季铵型阳离子改性淀粉复合絮凝剂,最佳制备工艺条件为:m(PFS):m(季铵型阳离子改性淀粉)=3:1,反应体系pH=2,反应温度60℃,反应时间4h,在最佳制备工艺条件下制备的絮凝剂,对含油污泥脱油率达到82.25%。
[Abstract]:Oily sludge is a solid waste produced by petrochemical industry in production process, especially in oil field production, which not only causes serious damage to oil field environment, but also wastes crude oil resources greatly. It is very important to adopt appropriate technology to deal with oily sludge timely and effectively and to recover crude oil resources as much as possible. Taking oily sludge in Daqing Oilfield as the research object, this paper studied the technological conditions of treating oily sludge with hot washing technology, and prepared three different types of flocculants, which are organic cationic flocculants. Inorganic polymer flocculant and inorganic organic compound flocculant were used to treat oily sludge by single factor and orthogonal experiment. The results of the study on the treatment of oily sludge by hot washing technology show that, according to liquid-solid ratio of 4: 1, adding demulsifier and flocculant in the field, the heat washing temperature is 50 鈩，

本文编号：1856272