东河换热器为壳程式换热器,承担着东轮线原油进轮南储运站升温的任务,保证外输脱水温度.东河换热器原油含硫是腐蚀的主要原因,通过改造后(原油走管程,蒸汽走壳程)与改造前(原油走壳程,蒸汽走管程)换热器传热系数对比,改造后换热器传热系数提高45%,设备投资费用略有增加,但操作费用大大降低.改造后,根据原油出口的温度调节进口蒸汽量的大小,可以提高蒸汽利用率,避免蒸汽浪费.%Donghe heat exchanger is shell and tube heat exchanger, plays a role in heating the oil from DongLun line to LunNan storage and transportation station, moreover it ensures the dehydration temperature of oil out-transportation.Through the analysis on the causes of cor-rosion of the Donghe heat exchanger, it is concluded that the main reason to cause corrosion is sulphur. comparing the heat transfer coefficient of the old heat exchanger with the new heat exchanger,it is concluded that the heat transfer coefficient of the new heat exchanger increased by 45%after transforming,although the equipment investment cost increases slightly,the op-eration cost reduce greatly. According to the temperature of the export the quantity of steam could be regulated,the utilization of steam could be raised and avoid wasting.
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