479206 Vacuum Distillation: Wash Zone Configuration

Monday, March 27, 2017: 1:35 PM
302AB (Henry B. Gonzalez Convention Center)
Andrew W. Sloley, Advisian (WorleyParsons Group), Houston, TX

Refinery vacuum units include a deentrainment, or wash zone, for removal of heavy material from desired products. Wash zone reliability problems often shut vacuum units down, causing significant losses. The review of wash zone operations cover;
  • Operating objectives
  • Fractionating versus deentraining wash zones
  • Wash zone terminology
  • Operating configurations
  • Hot-wash versus cold-wash
  • Wash oil distributors
  • Conventional configurations
  • Spray chambers
  • Multiple stage wash systems
  • Recycle wash systems
  • Wash zone modeling and reliability

 Elements of case studies from multiple units are included to illustrate key points.


Extended Abstract: File Uploaded
See more of this Session: Kister Distillation Symposium 2017: Optimum Design and Operation in Refinery Distillation
See more of this Group/Topical: Topical 8: Kister Distillation Symposium