Page 494 - Elements of Chemical Reaction Engineering Ebook

Sec. €1.3 Nonisothermal Continuous-Flow Reactors 465

Se.e Table E8-7.1 for a summary of the calculations and Table E8-7.2 and Figure
EU-7.1 for the POLYMATH program and its graphical output.

TABLE E8-7.1. SUJvlMAKY
Adiabatic PFR
with variable heat (E8-7.2)
capacities
(E8-7.5)

(E,8-7.8)

AC,= 6.8--11.5X10-3T-3.81X10-6T2
AHi'(TR) = 80,770
aA = 26.63 Aa = 6.8

PA = 0.183 4 = -5.75 x 10-3
2

yA = -45.86 X -
Ay = -1.27 X
3
CA,= 18.8
FAo = 38.3
k = 8.2 X IO'^ exp( 7)
-
34,222
(E8-7.12)

TABLE E8-7.2. POLYMATH PROGRAM

- Equations: Initial Values:
d(T)ld(U)=-raW(-delt)/(FaoW(Cpa+XfdelCp) > 1035
dlX)/d(U)=-ra/Fao Cl
k=8.2flOf#U%xp (-34222/T 1
Fao=38.3
CPa=26.63+. 183f~-45. ~~WI~WH-~)WTWW~
del Cp=6.8-11.5W1031W ( -3) WT-3.81f10WW < -6) XTffZ
Cao=18.8
T0=1035
Tr=298
dc 1 taH=80770+6.8W (T-Tr ) -5.7SWIOWI ( -3) )i( TfW2-TrYW2 )-1.27WiOWW (-6 )f ( TWW3-TrXf3)
ral=-kEaoW< I-X) / (1tX) WTdT
vo = 0, vp = 5