28.- One of the key steps in the design of the equipment for the production of acetic anhydride is the cracking of acetone according to the reaction: СH-СОСH, — CН-СО + СH4 This reaction occurs in gas phase and follows a first order kinetics with respect to acetone. The rate constant is given by the expression: In k = 34.34 – (34222/T) (T in K, k in s') 8000 kg/h of acetone are going to be fed into a plug flow reactor. Considering that the reactor works adiabatically, the feeding is pure acetone, inlet temperature is 1035 K and pressure is 1.6 atm (the latter is constant along the reactor), which volume of reactor will be required to achieve a conversion of 20%? Data: Cp acetone = 164 J/(mol·K), C, ketene = 96 J/(mol·K), C, methane = 60 J/(mol·K) %3D AH(298K) = 80.8 kJ/molacetone
28.- One of the key steps in the design of the equipment for the production of acetic anhydride is the cracking of acetone according to the reaction: СH-СОСH, — CН-СО + СH4 This reaction occurs in gas phase and follows a first order kinetics with respect to acetone. The rate constant is given by the expression: In k = 34.34 – (34222/T) (T in K, k in s') 8000 kg/h of acetone are going to be fed into a plug flow reactor. Considering that the reactor works adiabatically, the feeding is pure acetone, inlet temperature is 1035 K and pressure is 1.6 atm (the latter is constant along the reactor), which volume of reactor will be required to achieve a conversion of 20%? Data: Cp acetone = 164 J/(mol·K), C, ketene = 96 J/(mol·K), C, methane = 60 J/(mol·K) %3D AH(298K) = 80.8 kJ/molacetone
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:28.- Öne of the key steps in the design of the equipment for the production of acetic anhydride
is the cracking of acetone according to the reaction:
СH-CОСH, — СH-CО + СH4
This reaction occurs in gas phase and follows a first order kinetics with respect to acetone.
The rate constant is given by the expression:
In k = 34.34 – (34222/T)
(T in K, k in s')
8000 kg/h of acetone are going to be fed into a plug flow reactor. Considering that the reactor
works adiabatically, the feeding is pure acetone, inlet temperature is 1035 K and pressure is
1.6 atm (the latter is constant along the reactor), which volume of reactor will be required to
achieve a conversion of 20%?
Data:
Cp
acetone = 60 J/(mol·K)
= 164 J/(mol·K), C, ketene = 96 J/(mol·K), Cp methane
AH(298K) = 80.8 kJ/molacetone
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