Unused 6727 Sq Ft Flubex 316 Stainless Steel Vertical Reboiler. Mfr Praj Industries. Type Fluid Bed Heat Exchanger. 2" Diameter x 29'6"L tubes rated 40PSI@230F. Approx. 61,730 lbs. Shell rated 15PSI@266F. Serial #06D058-H1501. National Board #24. Built 2008.