游离水对海上液化石油气生产系统的影响与解决方案

根据某海上液化石油气生产系统发现的问题，由HYSYS软件模拟得知，凝析油游离水含量过高会造成液化石油气产品收率降低、产品不合格、操作波动和潜在液泛淹塔事故，同时还会造成起泡、换热器结垢和设备腐蚀。增加模块化串级高效聚结分离器可分级分步深度脱除液化石油气系统入口游离水和乳化水，保证海上液化石油气生产系统的安全稳定运行和设计寿命。模块化高效聚结分离器占用空间小、质量小、改造工作量小，在海上生产设施上的应用具有较大优势。

Influence of Free Water on Offshore Liquefied Petroleum Gas Production Systems and its Solution

Based on the problems in an offshore LPG production system, the HYSYS software simulation shows that high content of free water in the inflow to LPG production columns causes LPG recovery ratio lowering, product disqualification, operation fluctuation and potential flooding. The free water also causes foaming, heat exchanger scaling and equipment corrosion. The solution is to modify the traditional separator to serial high efficiency coalescence separator to remove the free water and emulsified water at the inlet of LPG system by stages and steps, so as to ensure the safe and stable operation and design life of the offshore LPG production system. The modularized design needs less space, weight and workload, which is of great advantages to the offshore production facilities.