What to do after the heating steam for the heat tracing pipes in winter in the north is discontinued
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In the winters in the north, most chemical plants are equipped with heat tracing pipes and utility steam traps. What good measures do you have for dealing with the steam condensate that forms in front of these utility steam traps after the plant is shut down?
Guiding drains are usually installed before and after the trap, and the guiding drain in front of the trap is used to discharge condensate during startup and shutdown
If possible, do not stop the heat tracing; if it must be stopped, use hot air or hot nitrogen for purging. If there are no such options, cold air or cold nitrogen can be used as well. Since the heat tracing lines are thin and long, the purging time will be longer. After purging, the drain valves at all low points must be opened
Guiding drains are usually installed before and after the trap, and the guiding drain in front of the trap is used to discharge condensate during startup and shutdown