To ensure the heater for safe operation, a thermocouple is pro - posed to install on the tube wall to protect the heater tube from coking.
为保证加热炉安全运行,提出了安装炉管管壁热电偶、强化炉管烧焦等对策。
The results show that oxidizing mechanism of the heater tube is mainly diffusion of metal ion passing through oxide and its reaction at the oxide-gases boundary.