Question

Question 1: Design of isothermal reactors 30 Marks The irreversible, gas-phase reaction A+B D is to be carried out in an isotherma °C) plug-flow reactor (PFR) at 5.0 atm. The mole fractions of the feed streams are A 0 B 0.50, and inerts 0.30. The activation energy for the above reaction is 80 000 cal/mol. the pressure drop due to fluid friction in the reactor is so small that it can be ignored, perform the following tasks: 2T a s Determine the expression for the steady-state volumetric flow rate in the reactor at any point. 1.1 What are the expressions for the concentrations of A, B, inerts and D as a function of conversion at any point along the reactor? 1.2 Plot the profile of concentrations of exit stream of the reactor as a function of conversion 1.3 Given that the reactor runs at uniform temperature and that the feed rate 50 dm3 min and the rate law (-rA), 2.5(CA) CB mol.m min was determined at 50°C. Use appropriate numerical method to calculate the volume of the plug-flow reactor required to achieve a conversion (based on A) of 70% 1.4 (10) A 6 How large would a CSTR have to be to take the effluent from the PFR in part (1.4) e ll 1.5 a above and achieve a conversion of 90% if operated at the same temperature.

Answer 1

Date OOO cal 5 0125 XIo 8-314273160 Fa) 0:/2

Huus 04 CA

Dato 1 2 0:250 3 O-5% う. c。

Ga GA CA 156*C 0156メ0.0366 YA 5 021095X 3072 6.0215182