The purge gas flow rate for the UOP process indicates zero – what could be the cause?
Thread Content
The replacement gas flow rate indicator for the UOP process showed zero, resulting in a cascade thermal shutdown during regeneration. The instrument drain has been properly handled. I would like to ask under what circumstances will the replacement gas carry liquid?
The circulating hydrogen compressor has too much liquid in it, right?
The process purge gas at the bottom of the reactor comes from the outlet of the recycle hydrogen compressor; check the low-point drain valve of the filter at the compressor inlet to see if liquid can be drained out； Adjust the cooling temperature of the air-cooled reformation product if necessary ； Furthermore, check whether the pressure tap piping of the orifice flow meter used in the process gas displacement is arranged correctly; generally, for gas flow meters, the pressure tap piping should be angled upward at 45° to prevent liquid accumulation from causing malfunctions in the instrument ；