Abstract
We present pressure drop and HETP data for Sulzer MellapakPlus™ 452.Y packing measured using the C6/C7 system under total reflux at three pressures: 33 kPa, atmospheric pressure and 180 kPa. The data were obtained in a column with an inner diameter of 0.3 m with the bed consisting of 12 elements of packing (total height 2.52 m).The pressure drop data under the loading point were in good agreement with the data predicted by Sulcol software (v3.4.4, vendor provided); in the loading region, the Sulcol data were on the safe side. The maximum stable FG factor for the three pressures were 2.79, 2.41 and 2.17 Pa0.5, respectively. The HETP values for the expected industrial operating load range were almost constant, with mean values of 0.29, 0.28, 0.27 m obtained, respectively. Because the measurements were performed with different compositions of the C6/C7 mixture, recalculation utilizing known HETP dependence on the slope of the equilibrium curve was used to suppress the dependence of the separation efficiency on the composition.
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