The vacuum distillation process was based on a dry-tower design at 14 mm Hg overhead pressure with 2,300 pph of overhead load at 80 mol % non-condensable gases and 20 mol % steam.

Citgo Petroleum Corp., Houston, has restarted a vacuum distillation unit and a delayed coker at its 425,000-b/d Lake Charles, La., refinery, both of which had been offline since the summer of 2020 ...