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研究了瓜尔胶改性生产工艺中管翅式换热器的工作原理,分析了管翅式换热器翅片管失效的原因。结果表明:氧腐蚀、蒸汽冲刷及外力作用是造成管翅式换热器翅片管失效的主要原因。提出在启用干燥设备过程中,缓慢开启蒸汽阀门、换热器回水管线上安装放水阀和选用不锈钢作为基管用材,可提高管翅式换热器使用寿命。
The working principle of tube-fin heat exchanger in guar gum modified process was studied, and the reason of the failure of finned tube heat exchanger was analyzed. The results show that oxygen corrosion, steam scouring and external force are the main reasons for the failure of the finned tube heat exchanger tube. It is put forward that when the drying equipment is activated, the steam valve should be slowly opened, the drain valve should be installed on the return line of the heat exchanger, and stainless steel should be used as the material of the base pipe to prolong the service life of the tube-fin heat exchanger.