Sweco Fab, designed and fabricated a high pressure knock-out drum for a refining company in El Paso, Texas. The pressure vessel was designed according to ASME Section VIII Div. 1 codes with an overall height of 351″ and inside drum diameter of 48″. Its main application is to separate the vapor and liquid in the refining process. It contains a fire proofing skirt and a stainless steel demister pad that aids the separation process. The shell is fabricated from 3/8″ thick SA516 Grade 70 carbon steel, and the forge fittings are fabricated from SA105 carbon steel. The knock out drum has an operation temperature of 450°F at 125 psig, and underwent radiography, dye penetrant and hydro-tests before it was shipped.
This high pressure knock-out drum has a 2.5″ thick shell fabricated from ASTM SA516 Grade 70, and a SA105 and SA350 carbon steel flange. The drum has a 48″ diameter, a total length of 15’8″ and weighs over 23,000 lb. It underwent a hydro-test and design test per ASME section VIII-1 “U” stamp vessel prior to shipment.