Page 137 - Process simulation and control using Aspen

126 PROCESS SIMULATION AND CONTROL USING ASPEN 1"

NO. OF EQUILIBRIUM STAGES 30.0000
DISTILLATE VAPOUR FRACTION 0 . 0

*** RESULTS ***

DISTILLATE TEMP. (F) -18.3114
BOTTOM TEMP. (F) 20.4654
MINIMUM REFLUX RATIO 7.72431
ACTUAL REFLUX RATIO 8.75092
MINIMUM STAGES 33.9434
ACTUAL EQUILIBRIUM STAGES 67.8868
NUMBER OF ACTUAL STAGES ABOVE FEED 39.4169
DIST. VS FEED 0.39900
CONDENSER COOLING REQUIRED (BTU/HR) 3,034,310.
NET CONDENSER DUTY (BTU/HR) -3,034,310.
REBOILER HEATING REQUIRED (BTU/HR) 1,924,980.
NET REBOILER DUTY (BTU/HR) 1,924,980.
ASPEN PLUS PLAT: WIN32 VER: 11.1 07/12/2007 PAGE
SIMULATION OF A SHORTCUT DISTILLATION COLUMN
STREAM SECTION
BDF

STREAM ID B D F
FROM: DSTWU DSTWU
TO : DSTWU

SUBSTREAM: MIXED
PHASE: LIQUID LIQUID VAPOUR
COMPONENTS: LBMOL/HR
ETHANE 119.8800 0 .1200 120.0000
ETHYLENE 0 .3200 79.6800 80.0000
COMPONENTS: MOLE FRAC
ETHANE 0 .9973 1 .5038-03 0 .6000
ETHYLENE 2 .6622-03 0 9985
. 0 .4000
TOTAL FLOW:
LBMOL/HR 120.2000 79.8000 200.0000
LB/HR 3613.7256 2238.9320 5852.6576
CUFT/HR 140.3489 82.0590 7 .5963+04
STATE VARIABLES:
TEMP (F) 20.4654 - 18.3114 75.0000
PRES (PSI) 300.0000 300.0000 15.0000
VFRAC 0 . 0 0 . 0 1 .0000
LFRAC 1 .0000 1 .0000 0 .0
SFRAC 0 . 0 0 . 0 0 . 0
ENTHALPY:
BTU/LBMOL - 4 .1532+04 1 .6983+04 -1 .2638+04