Ethylene oxide is produced by the catalytic oxidation of ethylene: 2C,H, +O, →2C,H,O An undesired competing reaction is the combustion of ethylene C,H,+30, →2CO,+2H,0 The feed to the reactor contains 3 moles of ethylene per mole of oxygen. The single– pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in the reactor, 95 moles of ethylene oxide emerges 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. (a) Draw a process flow diagram showing the streams and their components. Comment of the feasibility of the process and the assumptions you will make for the mass balance. (b) For 100 moles of feed to the reactor calculate: (b.1) The production rate of ethylene oxide. (b.2) The molar flow rates of ethylene and oxygen in the fresh feed. (b.3) The overall conversion of ethylene (c) Calculate the molar flow rates of ethylene and oxygen in the fresh feed needed to produce 1 tonne per hour of ethylene oxide.
Ethylene oxide is produced by the catalytic oxidation of ethylene: 2C,H, +O, →2C,H,O An undesired competing reaction is the combustion of ethylene C,H,+30, →2CO,+2H,0 The feed to the reactor contains 3 moles of ethylene per mole of oxygen. The single– pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in the reactor, 95 moles of ethylene oxide emerges 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. (a) Draw a process flow diagram showing the streams and their components. Comment of the feasibility of the process and the assumptions you will make for the mass balance. (b) For 100 moles of feed to the reactor calculate: (b.1) The production rate of ethylene oxide. (b.2) The molar flow rates of ethylene and oxygen in the fresh feed. (b.3) The overall conversion of ethylene (c) Calculate the molar flow rates of ethylene and oxygen in the fresh feed needed to produce 1 tonne per hour 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:Problem 3
Ethylene oxide is produced by the catalytic oxidation of ethylene:
2C,H, +O, →2C,H,0
An undesired competing reaction is the combustion of ethylene
C,H,+30, →2CO,+2H,O
The feed to the reactor contains 3 moles of ethylene per mole of oxygen. The single-
pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in
the reactor, 95 moles of ethylene oxide emerges 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.
(a)
Draw a process flow diagram showing the streams and their components.
Comment of the feasibility of the process and the assumptions you will make
for the mass balance.
(b)
For 100 moles of feed to the reactor calculate:
(b.1)
The production rate of ethylene oxide.
(b.2)
The molar flow rates of ethylene and oxygen in the fresh feed.
(b.3)
The overall conversion of ethylene
(c)
Calculate the molar flow rates of ethylene and oxygen in the fresh feed
needed to produce 1 tonne per hour of ethylene oxide.
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