Unused 568.11 sq. ft. carbon steel shell and tube heat exchanger. TEMA BEU design, 29" diameter x 72" tube length. Carbon steel shell, tubes and heads. Design duty of 6.215 MMBTU/hr. Shell rated 180 PSIG/FV @ 330°F, tubes rated 232 PSIG/FV @ 430°F. Estimated empty weight of 6,816 lbs. Tag #18-X-381. Previously designated as Debutanizer Reboiler.