Problem 1: (15 points)

Refer to the HDA process for production of benzene from toluene, answer each of the following questions:

a) Is the overall reaction exothermic or endothermic? Is the reaction(s) reversible or irreversible? Is the reactor isothermal or adiabatic?

Justify each of your answers.

b) Determine the limiting reactant and the reactant(s) in excess, if any.

c) Calculate the reactor conversion (limiting to desired product).

d) Determine the overall conversion of the process (limiting reactant to desired product).

e) Justify the reactor high pressure (thermodynamically and kinetically). Verify your answer by suitable numerical calculations.

f) Justify the reactor high inlet temperature (thermodynamically and kinetically). Verify your answer by suitable numerical

calculations.

The rate of reaction with respect to the limiting reactant is given by

R = 8.314 kJ/kmol.K.

The thermodynamic equilibrium constant is given by

ln Kp = 13.51 + 5037/T - 2.073 ln T + 3.499 x10-4 T + 4.173x10-8 T

2 + 3017/T

2

= 3.6858x106

(

148100

)

2

1/2 The rate of reaction with respect to the limiting reactant is given by ty = 3.6858x1064prpna R = 8.314 kJ/kmol.K. The thermodynamic equilibrium constant is given by In Kp = 13.51 + 5037/7 -2.073 in T+3.499x10* T +4.173x10*72 +3017/T 1/6 V tone PA 101 Tone F 101 101 V.164 CHOS Faydee che Congo como FO TO) PG Massow (1000 2 * H.101 3.100 V-100 w -SIM V-10 B ty MAU 6-102 PAD -101 V-100 Banned of Toluene Figure 1.5 Bentene Process Flow Diagram (PFD) for the Production of Bence via the Hydrodelkylation of Tolome Table 1.5 Flow Summary Table for the Beaceae Process Shown in Figure 1.3 (and Figure 1.5) Table 1.5: Flow summary Table for HAD process continued...) Stres Number 1 2 3 4 5 6 8 10 11 12 13 14 15 16 17 18 Tecuperat ("O 3 99 322 4160041 5410102112112 > > > > Pressure bar) 1:40 SSS 250 255 239 2026 23 Vapor Frasi 33 0.0 00 33 1.00 LO 29 10 10 10 LD 10 00 00 1 LO Mase Powe/h) 205 6.41 219 11 3.27 140 HIS Mole Flowmello 241 0 108 1442010 12014 2580 12044 4226 1100 1200 102 102 Compare Mele How (mol/l) Hydrogen 0.0 00 200 735.4 449.4 735.4 22 Musche 0.0 00 15.0 3173092 3173 36,953 4423 00 123.05 330 0.0 10 00 76 66 7.6 0:37 956 1940 1943 29603 Telone 1087 00 14LD 07 14LD 105 122 4 031 0.00 KO 19 112 25 10 001 100 205 035 22 ce 102 bo 1/2 The rate of reaction with respect to the limiting reactant is given by ty = 3.6858x1064prpna R = 8.314 kJ/kmol.K. The thermodynamic equilibrium constant is given by In Kp = 13.51 + 5037/7 -2.073 in T+3.499x10* T +4.173x10*72 +3017/T 1/6 V tone PA 101 Tone F 101 101 V.164 CHOS Faydee che Congo como FO TO) PG Massow (1000 2 * H.101 3.100 V-100 w -SIM V-10 B ty MAU 6-102 PAD -101 V-100 Banned of Toluene Figure 1.5 Bentene Process Flow Diagram (PFD) for the Production of Bence via the Hydrodelkylation of Tolome Table 1.5 Flow Summary Table for the Beaceae Process Shown in Figure 1.3 (and Figure 1.5) Table 1.5: Flow summary Table for HAD process continued...) Stres Number 1 2 3 4 5 6 8 10 11 12 13 14 15 16 17 18 Tecuperat ("O 3 99 322 4160041 5410102112112 > > > > Pressure bar) 1:40 SSS 250 255 239 2026 23 Vapor Frasi 33 0.0 00 33 1.00 LO 29 10 10 10 LD 10 00 00 1 LO Mase Powe/h) 205 6.41 219 11 3.27 140 HIS Mole Flowmello 241 0 108 1442010 12014 2580 12044 4226 1100 1200 102 102 Compare Mele How (mol/l) Hydrogen 0.0 00 200 735.4 449.4 735.4 22 Musche 0.0 00 15.0 3173092 3173 36,953 4423 00 123.05 330 0.0 10 00 76 66 7.6 0:37 956 1940 1943 29603 Telone 1087 00 14LD 07 14LD 105 122 4 031 0.00 KO 19 112 25 10 001 100 205 035 22 ce 102 bo