HYDROPROCESSING WITH DRUM BLANKETING GAS COMPOSITIONAL CONTROL

摘要

A catalytic naphtha hydrodesulfurization process is operated in a process unit having a surge drum with equipped for gas blanketing with a blanketing gas containing controlled levels of CO and CO2. If the gas selected for blanketing normally contains more than the acceptable level of these inhibitors, they should be reduced to the levels appropriate for retention of catalyst functionality.

主权项

1. A selective catalytic naphtha hydrodesulfurization process operated in the presence of a hydrogen-containing treat gas in a process unit having a surge drum equipped for gas blanketing, which comprises blanketing the naphtha in the surge drum with a blanketing gas containing CO and/or CO2 at concentrations which result in concentrations of CO and/or CO2 in the naphtha at which the activity of the catalyst of the hydrodesulfurization process is maintained.