某海洋平台上海水篮式过滤器事故分析

Accident Analysis of Basket Seawater Filter on an Offshore Platform

目的研究分析东海某一海上平台海水用篮式过滤器发生的腐蚀和堵塞事故原因。方法从海洋平台海水系统用篮式过滤器的原理、工艺流程、材料选择、滤网精度,滤芯设计、人工操作等多方面进行分析。结果受内压滤芯结构要优于受外压滤芯结构,如果过滤精度选择过高,会增加压差,造成滤芯堵塞。结论篮式过滤器滤芯单元应采用多滤芯的受内压结构,过滤精度应根据下游用户要求来确定。

The paper aims to study the reason of corrosion and plugging of basket filter on an offshore platform in the East China Sea. Principles, process flow, material selection, filter accuracy, filter design, manual operation, etc. of the casket filter for seawater system of an offshore platform were analyzed comprehensively. The internal pressure structure was better than the external pressure structure about filter element. The pressure difference would increase and the filter element would be plugged if the filtration precision was too high. The filter element of the basket filter should be internal pressure structure of multi-filter elements;the filtration precision of the basket filter should be confirmed by the downstream user.