Q3) Ethylene oxide (desired product) is produced by the catalytic oxidation of ethylene: 2C2H4 + O2 → 2C2H4O An undesired competing reaction is the combustion of ethylene: C2H4 + 302 → 2CO2 + 2H₂O The feed to the reactor contains 3 moles of ethylene (C2H4) per mole of oxygen (O₂). The single-pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in the reactor, 90 moles of ethylene oxide emerge in the reactor products. A multiple-unit process is used to separate the products: ethylene and oxygen are recycled to the reactor, ethylene oxide is sold as a product, and carbon dioxide and water are discarded. Assume 100 mol/h of the reactor feed stream as a basis. (Use extent of reaction as needed): C₂Ha 0₂ 100 mol/h C₂H₂ 0₂ Reactor C₂H₂ 0₂ C₂Ha 0₂ C₂H₂O CO₂ H₂O Separator CO₂ H₂O C₂H₂O a) b) c) Calculate the molar flow rate (mol/h) of ethylene in the fresh feed needed to produce 1 metric ton per hour of ethylene oxide d) As ethylene oxide is the desired product, calculate its yield. [ Perform a degree-of-freedom analysis for the reactor Calculate the molar flow rates of ethylene and oxygen in the fresh feed and the production rate of ethylene oxide. [
Q3) Ethylene oxide (desired product) is produced by the catalytic oxidation of ethylene: 2C2H4 + O2 → 2C2H4O An undesired competing reaction is the combustion of ethylene: C2H4 + 302 → 2CO2 + 2H₂O The feed to the reactor contains 3 moles of ethylene (C2H4) per mole of oxygen (O₂). The single-pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in the reactor, 90 moles of ethylene oxide emerge in the reactor products. A multiple-unit process is used to separate the products: ethylene and oxygen are recycled to the reactor, ethylene oxide is sold as a product, and carbon dioxide and water are discarded. Assume 100 mol/h of the reactor feed stream as a basis. (Use extent of reaction as needed): C₂Ha 0₂ 100 mol/h C₂H₂ 0₂ Reactor C₂H₂ 0₂ C₂Ha 0₂ C₂H₂O CO₂ H₂O Separator CO₂ H₂O C₂H₂O a) b) c) Calculate the molar flow rate (mol/h) of ethylene in the fresh feed needed to produce 1 metric ton per hour of ethylene oxide d) As ethylene oxide is the desired product, calculate its yield. [ Perform a degree-of-freedom analysis for the reactor Calculate the molar flow rates of ethylene and oxygen in the fresh feed and the production rate of ethylene oxide. [
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:Q3) Ethylene oxide (desired product) is produced by the catalytic oxidation of ethylene:
2C2H4+ O2₂2C₂H4O
An undesired competing reaction is the combustion of ethylene:
C2H4+302 → 2CO2 + 2H₂O
a)
b)
c)
The feed to the reactor contains 3 moles of ethylene (C2H4) per mole of oxygen (O₂). The
single-pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in
the reactor, 90 moles of ethylene oxide emerge in the reactor products. A multiple-unit process
is used to separate the products: ethylene and oxygen are recycled to the reactor, ethylene oxide
is sold as a product, and carbon dioxide and water are discarded. Assume 100 mol/h of the
reactor feed stream as a basis. (Use extent of reaction as needed):
C₂H₂
0₂
100 mol/h
C₂H₂
0₂
Reactor
C₂H₂
0₂
C₂H4
0₂
C₂H₂O
CO₂
H₂O
Separator
CO₂
H₂O
C₂H₂O
Perform a degree-of-freedom analysis for the reactor
Calculate the molar flow rates of ethylene and oxygen in the fresh feed and the production
rate of ethylene oxide. [
Calculate the molar flow rate (mol/h) of ethylene in the fresh feed needed to produce 1
metric ton per hour of ethylene oxide
d) As ethylene oxide is the desired product, calculate its yield. [
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VIEWStep 4: Part(b)-calculation of production rate of ethylene oxide
VIEWStep 5: Calculation of production rate of water
VIEWStep 6: Part(b)-Calculation of Oxygen in the fresh feed
VIEWStep 7: Part(b)-Calculation of ethylene in the fresh feed
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