减少反冲洗泵运转时间的方法分析

The Method of Reducing Backwashing Pump Running Time Analysis

目前油田普遍使用压力滤罐对采出水进行过滤,为了提高水处理效果必须定期对过滤罐进行反冲洗。理论上反冲洗时间越长,清洗效果越好,但反冲洗时间过长会增加反冲洗泵运转时间,不利于节能。通常核桃壳滤罐的反冲洗时间要求为20 min。通过摸索合理的反冲洗强度,使冲洗水流剪力与摩擦力达到最佳范围,实现了每座滤罐减少反冲洗时间5 min,降低了反冲洗泵运转时率。按10座滤罐计算,每天节电30.8 k Wh,达到节能的目的。

At present, the oil field widely uses pressure filter tank to filter the produced water, in order to improve the water treatment effect,the filter tank must be regularly backwashed. Theo-retically the longer backwashing time, the better the cleaning effect, but too long anti-wash time will increase the backwash pump running time, which is not conducive to save energy. Usually walnut shell filter backwash time requires for 20 minutes. By exploring a reasonable backwashing strength, so that the rinse water shear force and friction can achieve the best range to let each tank reduce the backwash time by 5 minutes, which reduces the backwash pump operation rate. Taking 10 filter cans as example, the method can daily save electricity by 30.8 Kwh, which achieves the purpose of energy conservation.