新型绿色环保杀生剂EGD在LNG 海水系统中的应用

Application of new green biocide EGD in LNG seawater system

针对液化天然气(LNG,liquefied natural gas)海水换热设备的防护问题,建立小型动态模拟LNG海水系统,通过挂片实验的方法进行了防污和剥离实验。将广泛应用于电厂的新型绿色环保杀生剂EGD用于LNG海水系统中,替换了原有的传统电解制氯系统。实验结果显示:EGD的投加可有效抑制海生物、藻类及淤泥的生长,同时对原有海生物、藻类及淤泥有显著的剥离效果,且8mg/L加药量的效果优于6mg/L。因此,可得出新型绿色环保杀生剂EGD对LNG海水系统具备适用性,该实验为实际运行提供了实践基础和理论依据。

Aiming at the protection of LNG seawater heat exchanger,the anti-fouling and stripping experiments are carried out by setting up a small dynamic simulation LNG seawater system to carry out hanging piece experiments. EGD that is widely used in power plants is now used in LNG seawater system. The traditional electrolytic chlorine production system is thus replaced. The experimental results show that EGD can effectively inhibit the growth of marine organisms,algae and silt,and has a significant peeling effect on the original marine organisms,algae and silt,and the effect of 8 mg/L dosage is better than 6 mg/L dosage. Therefore,it can be concluded that the new green biocide EGD has applicability to LNG seawater system. This experiment provides practical and theoretical basis for practical operation.