关键词:

油水重力分离, 聚结构件, 液滴聚结, 分离性能

Abstract:

Based on theoretical analysis, a laboratory test was carried out using several coalescing internals with different structures to investigate the effect of coalescing internals acting on the separating performance of oil-water gravity separator.Residence time, oil concentration distribution, separating efficiency, oil concentration and median particle diameter difference in front and at the back of different coalescing structures were comprehensively contrasted.Results indicate that, reticulate corrugated plate has a good coalescing effect for small droplets, which can significantly improve oil-water separating efficiency and shorten residence time.The effect of opening corrugated plate is worse, while joggled-lap corrugated plate is the worst among the three structures.It was found that excellent performance of the coalescing structures should satisfy three conditions.Firstly, having good oleophilic and hydrophobic property; secondly, having sufficient channels for oil droplets to rise upward; thirdly, having larger contact area for mixture phase.This work provides good foundation for further development of effective and compact oil-water gravity separation equipment.

Key words:

油水重力分离, 聚结构件, 液滴聚结, 分离性能