硫铵蒸发器列管结垢的清洗工艺

摘要

This paper presents the pipes scale of ammonium sulfate falling film evaporator,elements composition of the scale was analyzed by X Ray Fluorescence（XRF） and quantitative analysis by chemistry mothed,adopting the dredge water cleaning,heating alkaline cleaning,room acid cleaning and water cleaning passivation multistep cleaning method by the results of analysis on scale,industrial cleaning results,this process method is simple and effect,it can deal with the hard evaporator scale that conventional physical approach is difficult to dredge,has good application value.%介绍了硫铵降膜蒸发器列管的结垢情况,对结垢进行了X衍射荧光光谱定性分析和化学定量分析,根据分析结果对列管进行疏通水洗—加热碱洗—常温酸洗—水洗钝化等多步清洗工艺。试验证明,该工艺简单、效果良好,能够处理常规物理方法难以处理的质硬蒸发器结垢,具有良好的推广应用价值。