When the bottom reboiler is heated by steam, can a low production load cause problems with the proper operation of the condensate drain valves?
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When the bottom reboiler is heated by steam, if a control system based on steam throttling and condensate drain valves is used, could this lead to problems with proper drainage of water from the condensate drain valves when the production load is low? (When the process medium temperature is below 100°C and the load is low, the opening of the steam throttle valve is small, resulting in a low pressure before the drain valve, sometimes even below 1 kg/cm2.)
It’s very likely that the temperature of the material being heated is below 100. It’s necessary to do some calculations to determine this accurately!
In reality, it is still the heating steam that is used to control the volume, and it has little to do with the steam trap.
If the pressure in front of the steam trap is too low, it is likely difficult to activate the steam trap, and poor drainage will be inevitable~
Generally, when the temperature is below 100 degrees, discharge is done on-site before the demister; otherwise, water hammer may occur