T/T Monel 400 The reboiler feed section is Monel 400 with (7) trays on 18" spacing; the rectifying section is 10 guage 304SS with 16' of 304SS packing, and stripping section is 10 gauge 304SS with 16' of 304SS packing. Packed with 1" 304SS pall rings, yielding (6) theoretical stages The column has (4) bolted sections - 22' base section (containing the skirt and 15' long Monel 400 reboiler feed section) 16'8" intermediate (rectifying) section 18' upper section (stripping) , and 2'6" cap Origninal design ratings are : distillate - 1093 lbs/hr of ethanol, 46 lbs.hr water 100 degrees F , 8.8 psig