A sequence of two distillation columns is to be used to produce the products indicated in figure.
Question:
A sequence of two distillation columns is to be used to produce the products indicated in figure. Establish the type of condenser and an operating pressure for each column for:
(a) The direct sequence (C2/C3 separation first) and
(b) The indirect sequence (C3/nC4 separation first). Use K-values from figures 2.8
Transcribed Image Text:
Н, м MАРНТНА NITROGEN - A COMPARISON OF ABOUT 900 EXPERIMENTAL POINTS WITH THE NOMOGRAM INDICATES THE FOLLOWING DEVIATIONS: в-, IN BENZENE STANDARD DEVIATION - 9A% AVERAGE DEVIATION - 6.8% --20% KNOмо- КЕХР KEXP BIAS 1000 800 800 700 е- на IN TOLUENE % DEVIATION * 190 600 ск, IN BENZENE7 180- 500 WATER-O C00 IN DUTANE -400 300 METHANENG, TO CR Aно N аASо. TEMPERATURE, DEG. F CH IN TOLUENE OWATER 400 110- 1204 N PROPANE 200 140- CH, IN LT. HYDROCARDONS "API . C, • FREE LIOUID -150 HF IN SODUTANE per esrvenes 10 CH, IN CYCLOHEXANE 100 I co, IN NAT. GAS- -70 DISTILLATE 60 -30 -50 WATERE IN NAPHTHA I KEROSENE WATER IN HEXANE ACETYLENE ETHE NE 40 30 15 750 20 - ETHANE 15 Вынаs IN IN NAPHTHA 10 PEGASUS CRUDE & GAS DIST. GH, IN BENZENE. 20- IN GAS OIL PROPENE- F-50 PROPANE- --40 -30 L5 LO 0.7 10 ISOBUTANE- 0.5 1SOBUTENE. 1-BUTENE - 20 @MЕТНYL 04 -иTANE 30 МEACAFTAN IN trons2-BUTENE ise-BUTENE -40 ABSORPTION 0.3 OIL (195 MW) 50 0.2 0.15 70 -0.1 80 ISOPENTANE- 0.00 0.07 90 -0,06 -0.05 rPENTANE- 100 -aoi 110 003 120 130 -0.015 -0- -0.00 -0.008 .,007 150 -HEXANE- 160 -0,006 -0,005 170 -Q.004 180 -0,003 - 190 Eno02 E 200 HEPTANE L-210 Figure 2.8 Vapor-liquid equilibria, 40 to 800°F. PRESSURE, PSIA -00- PRESSURE, PSIA ahulomluılwısıublhww.m 00- ububuluntutrluluutunlunlmanbiwb hulsuluulunkuluudmdutuutuutunbubuwun NI IM OS WT. OF OIL NENT OILS للبید TENP, NORMAL BOILING POINT, DEG F
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