核桃壳过滤器设计参数试验研究

在辽河油田分别对核桃壳过滤器的纳污能力、过滤周期、反洗强度、反洗时间等参数进行了现场试验 ,提出了过滤器的成熟期和有效过滤期两个阶段的界限 ,并对核桃壳过滤器是否加入清洗剂反洗进行了试验对比。试验结果表明 ,单位体积核桃壳在一个周期内的纳污能力为34 8kg/m3,反冲洗周期为 15h ,反冲洗强度为 9 1L/m2 ·s,冲洗时间 2 0min ,出水含油量低于10mg/L ,出水悬浮物含量低于 2 0mg/L ,加入清洗剂清洗 ,反洗效果明显比不加清洗剂要好

Study on design parameter of walnut shell filter

The design parameters of the walnut shell filter were tested on site in Liaohe oilfield. The concept of mature period and effectively filtering period is brought forth. And a comparison is made on filtering with/without cleaning agent added. Test result shows that the removal rate of oil and suspended particles in a filtering cycle is 34.8kg/m 3, the back-wash cycle is 15h, back-wash strength is 9.1L/(m 2·s), back-wash time is 20min, oil content in the filtered water is less than 10mg/L, and suspended particles content is less than 20mg/L. The back-washing effect is better with cleaning agent added than that without cleaning agent added.