Question: 4. Using the performance data and stream compositions below, back-calculate the overall stage efficiency for propane (C3). The K-value for propane in these conditions is

4. Using the performance data and stream compositions below, back-calculate the overall stage efficiency for propane (C3). The K-value for propane in these

4. Using the performance data and stream compositions below, back-calculate the overall stage efficiency for propane (C3). The K-value for propane in these conditions is 2.0. Lean oil Lean gas Trayed absorption column Rich gas Rich oil Performance data Stream Compositions, Mol% Rich Gas Lean Gas Rich Oil Component Lean Oil Lean oil temperature, F 102 Rich oil temperature, F 126 Rich gas temperature, F 108 Lean gas temperature, F 108 Lean oil rate, lbmol/h 368 Rich oil rate, lbmol/h 525.4 Rich gas rate, lbmol/h 946 Lean gas rate, lbmol/h 786.9 Number of plates 16 C2 C5 47.30 8.80 5.20 22.60 3.80 7.40 3.00 1.90 55.90 9.80 5.14 21.65 2.34 4.45 0.72 nC4 1.33 1.16 1.66 8.19 3.33 6.66 4.01 3.42 70.24 100.00 nCs nCo Oil absorbent Totals 100 100 100.00 100.00

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