大化肥设备的化学清洗

Chemical cleaning on equipment in the large-scale nitrogenous fertilizer plant

论述了水冷器、换热器、锅炉和尿素高压设备结垢类型及形成原因介绍了停车化学清洗和不停车化学清洗的几种工艺流程事实证明。

There are various scale in the water-cooled condensers,heat-exchangers,boilers and urea high pressure vessels.The types of scale and the deposit reasons are included.The process of chemical cleaning such as off-line cleanig,on-line cleaning and so on is introduced.It has been proved that the chemical cleaning is a very efficient way to prevent and reduce the tendency of fouling and increase the heat-transfer efficiency.