We have a Naphtha hydrotreater which is running at 140% of its installed capacity thanks to some modifications done in heater convection section which resulted the increase of heater absorbed duty. Although wqe have not faced any hydrauilic limitation in the circuit, at this point we are a little worried about the impact it might be having on the pipng mainly the bends of furnace and also the heat exchaanger tubes. Can anyone tell me the maximum recommended tube and shell side velocities of heat exchangers in two phase flow.
Thanks,
Dipankar