Chemcad 00-4 Chemcad Chemcad Chemstations Chemcad CHEMCAD Chemstations 1.1 CHEMCAD A. B. / C. / D. 1.2CHEMCAD CHEMCAD ChemCAD 50 1.3 CHEMCAD 39 K 13 K UNIFAC UPLM (UNIFAC for Polymers)Wilson T. K. Wilson HRNM Modified Wilson Van Laar Non-Random Two Liquid (NRTL) Margules GMAC (Chien-Null) Scatchard-Hildebrand (Regular Solution) Redlich-Kwong Soave-Redlich-Kwong Peng-Robinson API Soave-Redlich-Kwong Lee-Kesler Benedict-Webb-Rubin-Starling Latent Heat Electrolyte Heat of Mixing by Gamma 1.4 CHEMCAD A. 1
B. C. D. E. F. G. H. I. J. / K. / 1.5CHENCAD A / ( & ) B ( & ) C D - E // F G H I J K L 1.6 CHEMCAD ChemCAD ChemCAD 25 ChemCAD 2 CHEMCAD CHEMCAD TOWR ColumnTOWR PLUS Column SCDS Column SHORTCUT Column TOWR TOWR PLUS SCDS SCDS Column 2.1 SCDS SCDS SCDS SDCS SCDS SCDS SCDS SCDS K DK/DX( K ). 2
SDCS 2.2TOWR TOWR TOWR TOWR 5 4 TOWR TOWR TOWR TOWR SCDS 2.3 TOWR.PLUS TOWR.PLUS TOWR.PLUS 50 TOWR.PLUS TBP/D86 TOWR.PLUS 2.4 SHORTCUT SHORTCUT Fenske-Underwood-Gilliland Fenske Kirkbride SHORTCUT TOWR TOWR.PLUS 3 3.1 ( /)8000h 16 1610 7 10 4 kg ( ) 52% () 48%( ) =95% =2% 3.2 A B C D 3.3 3.3.1 1.ccx file New 3
chemical 2 shortcut stream 3 Simulation/Graphic Simulation FormatEngineering Units 4
Si Presure kpa ok 4 Thermophysicalcomponent list search for add benzene 41 ok 5 thermophysicalk-values SRK ok, thermophysicalenthalpy SRK ok 6 5
1 7 1 1 Light key split Heavy xd key split 1 xd R/Rmin 1.5 OK 8 6
Overall Mass Balance kmol/h kg/h Input Output Input Output Benzene 133.338 133.338 10415.602 10415.602 Toluene 104.342 104.342 9614.132 9614.132 Total 237.680 237.680 20029.734 20029.734 Shortcut Distillaton Summary Equip. No. 1 Name Mode 2 Light key component 1.0000 Light key split 0.9573 Heavy key component 2.0000 Heavy key split 0.0427 Reflux ratio 1.5000 Number of stages 161.0055 Min. No. of stages 8.0463 Feed stage 81.0028 Condenser duty MJ/h -10267.8535 Reboiler duty MJ/h 2547.0806 Reflux ratio, minimum 1.8834 Calc. Reflux ratio 1.5000 9 CDS column #1 7
7 Specifications 6 SpecificationxD 6 SpecificationxW General No.of stages 14 Feed stages 7OK 10 Scds Rigorous Distillation Summary Equip. No. 2 Name No. of stages 14 1st feed stage 7 Condenser mode 6 Condenser spec. 0.9573 Cond. comp i 1 Reboiler mode 6 Reboiler spec. 0.0235 Rebl. comp i 1 Cond duty MJ/h -16170.7314 Reblr duty MJ/h 8458.3379 Reflux mole kmol/h 382.3582 Reflux ratio 2.7948 8
Reflux mass kg/h 30096.5410 Column diameter m 1.9812 Tray space m 0.6096 No of sections 1 No of passes (S1) 1 Weir side width m 0.2159 Weir height m 0.0508 System factor 1.0000 11 Sizing Trays Select unitops 2OK Valve Tray OK 0.6m ok CHEMCAD 5.2.0 Page 1 Job Name: chemical2 Date: 04/18/2003 Time: 15:04:35 Vapor load is defined as the vapor from the tray below. Liquid load is defined as the liquid on the tray. Equip. 2 Tray No. 2 Tray Loadings Vapor Liquid 40835.939 kg/h 30067.238 kg/h 14673.854 m3/h 37.018 m3/h Density 2.783 kg/m3 812.229 kg/m3 System factor... 1.000 Valve type : V-1 Valve material : S.S. Valve thickness, gage... 12.000 Deck thickness, gage... 14.000 9
Tower internal diameter, m... 1.981 Tray spacing, m... 0.610 No. of tray liquid passes... 1 Downcomer dimension, Width m Length m Area m2 Side 0.216 1.235 0.182 Avg. weir length m... 1.235 Weir height, m... 0.051 Flow path length m... 1.549 Flow path width m... 1.755 Tray area, m2... 3.083 Tray active area m2... 2.719 % flood... 69.004 Hole area m2... 0.517 Approx # of valves... 436 Tray press loss, m... 0.104 Tray press loss, atm... 0.008 Dry press drop, m... 0.061 Downcomer clearance m... 0.044 Downcomer head loss m... 0.006 Downcomer backup m... 0.184 Downcomer residence time, sec... 3.265 Liquid holdup m3... 0.151 Liquid holdup kg... 122.406 Design pressure, atm... 1.000 Joint efficiency... 0.850 Allowable stress atm... 932.230 Corrosion allowance m... 0.001 Column thickness m... 0.000 Bottom thickness m... 0.000 1atmNo. of point 10 OK 10
XY 4 4.1. 0. C 4.1.1 11
0.5982 0.00602 0.3091 0.00906 0.06278 0.00311 0.00556 0.00608 14082.9 kg/h 154.63 /kmol/h / 0 C 60 0 C 4.1.2 A.Mpa() 0 B C C 4.2 - - - 0 - C - - - - 0 - C - 0 - - - C - 4.3 3 5 12
Aspen Chemcad Aspen Chemcad plus plus 1.195142E-7 0.00028 1.5E-7 1.153661E-7 4.49E-15 1.809147E- 20 0.001301378 0.00184 5.3E-5 0.001673199 2.32E-9 2.226303E- 10 0.7920002 0.99652 0.99994 0.9960001 0.11548 0.1109 0.07799914 0.02325865 0.00129 2.51E-6 0.002326426 0.09606 0.1004 0.09652166 0.1611802 0.0007 5.2E-8 1.078943E-12 0.69276 0.69332 0.7253126 0.007984558 1.5E-20 1.47715E-21 0.03428 0.034346 0.0359306 0.01427464 8.9E-30 2.636403E-20 0.06142 0.061403 0.06423603 1.999823E-7 1.3E-7 2.571199E-7 2.17E-13 1.398E-18 4.3.2 3 Equip. 3 Tray No. 2 Tray Loadings Vapor Liquid 10803.227 kg/h 3471.463 kg/h 3343.239 m3/h 4.295 m3/h Density 3.231 kg/m3 808.327 kg/m3 System factor... 1.000 Valve type : V-1 Valve material : S.S. Valve thickness, gage... 12.000 Deck thickness, gage... 14.000 Tower internal diameter, m... 1.067 Tray spacing, m... 0.610 No. of tray liquid passes... 1 Downcomer dimension, Width m Length m Area m2 Side 0.083 0.570 0.032 Avg. weir length m... 0.570 Weir height, m... 0.051 Flow path length m... 0.902 Flow path width m... 0.921 Tray area, m2... 0.894 Tray active area m2... 0.830 % flood... 59.010 Hole area m2... 0.158 Approx # of valves... 133 13
Tray press loss, m... 0.073 Tray press loss, MPa... 0.001 Dry press drop, m... 0.044 Downcomer clearance m... 0.044 Downcomer head loss m... 0.000 Downcomer backup m... 0.134 Downcomer residence time, sec... 3.571 Liquid holdup m3... 0.029 Liquid holdup kg... 23.157 Design pressure, MPa... 0.120 Joint efficiency... 0.850 Allowable stress MPa... 94.458 Corrosion allowance m... 0.001 Column thickness m... 0.002 Bottom thickness m... 0.009 4.3.3 5 Equip. 5 Tray No. 2 Tray Loadings Vapor Liquid 55563.566 kg/h 50590.883 kg/h 17039.765 m3/h 66.503 m3/h Density 3.261 kg/m3 760.725 kg/m3 System factor... 1.000 Valve type : V-1 Valve material : S.S. Valve thickness, gage... 12.000 Deck thickness, gage... 14.000 Tower internal diameter, m... 2.286 Tray spacing, m... 0.600 No. of tray liquid passes... 1 Downcomer dimension, Width m Length m Area m2 Side 0.311 1.568 0.335 Avg. weir length m... 1.568 Weir height, m... 0.051 Flow path length m... 1.664 Flow path width m... 2.064 Tray area, m2... 4.104 Tray active area m2... 3.434 % flood... 72.248 Hole area m2... 0.652 Approx # of valves... 551 Tray press loss, m... 0.114 Tray press loss, MPa... 0.001 14
Dry press drop, m... 0.065 Downcomer clearance m... 0.044 Downcomer head loss m... 0.012 Downcomer backup m... 0.206 Downcomer residence time, sec... 3.744 Liquid holdup m3... 0.237 Liquid holdup kg... 180.619 Design pressure, MPa... 0.100 Joint efficiency... 0.850 Allowable stress MPa... 94.458 Corrosion allowance m... 0.001 Column thickness m... 0.000 Bottom thickness m... 0.000 5 CHEMCAD 6 2002 15