12" distillation column - Never used. Paul Mueller S/N 357209 91. Manufacturer, built in 2007. Designed as Secondary Glycerin Distillation Column. Stainless steel 304L - ASME Nat’l Bd # 43307, MAWP 50 PSI internal/full vacuum internal at 450°F. Size 12.75" OD x Overall height 23 ft 5.875 inches, no jacket, insulated, 4 sections. See drawing and U-1 form links.
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