SHORTCUT计算最小回流比，算下来结果居然是-1 Shortcut Column 'SCD1' <PRE> FEEDS STREAM PHASE ------------ ------ S1 LIQUID PRODUCTS ------------- TOTAL STREAM RATES ------------- MOLES WEIGHT LIQUID VOL NORM VAPOR(1) NUM STREAM + PHASE KG-MOL/HR KG/HR M3/HR M3/HR SECTION TRAYS ------------ - ---------- ---------- ---------- ---------- ------- ----- S2 L 421.58 17917.34 20.23 9449.28 1 5.40 S3 L 47.50 4191.26 3.91 1064.71 TOTALS 469.08 22108.60 24.15 10513.99 5.40 SPECIFICATIONS PARAMETER COMP. SPECIFICATION SPECIFIED CALCULATED TYPE NUM TYPE VALUE VALUE ----------------- ------- ------------- ---------- ---------- STRM S2 2 MOL FRACTION 8.200E-01 8.198E-01 STRM S3 1 MOL FRACTION 9.700E-01 9.682E-01 SUMMARY OF UNDERWOOD CALCULATIONS MINIMUM REFLUX RATIO -1.00000 FEED CONDITION Q 1.29360 FENSKE MINIMUM TRAYS 5.40407 OPERATING REFLUX RATIO 2.00 * R-MINIMUM </PRE> 显示全部