How to integrate water flow with the gas-phase side stream extraction in a fractionation tower
Thread Content
As the title indicates, our company’s xylene distillation tower uses a gas-phase side stream to separate out the C8 material. I would like to ask everyone: is it necessary to use water for operation with such a side line at the start of operation? If so, how should water be introduced into the pipeline?
This is part of the catalytic reforming process; I’ll transfer it there so that more experienced professionals can give their opinions! :victory:
Purpose of water conveyance: to connect and clean pipeline equipment； Check the sealing performance of the equipment pipes under water filling conditions ； Inspect the instruments ； Operation simulation ； The difference from steam purging is that the pump can be started ； To meet the conditions for water circulation at the higher points within the tower, it is necessary to fill the tower with water up to those higher levels; however, an excessive amount of water in the tower poses a significant risk to the tower’s foundation ； Our approach is to use only compressed air and steam for purging in the side lines and top pipes; during water circulation, we increase the reflux at the top. If water can be obtained at the side line outlet, then operation proceeds; otherwise, it is skipped. Any pipeline that can be reached by the pump is included in the water circulation process.