Module code: CAPE205001 2 Ethylene oxide (C2H4O) is produced by a catalytic oxidation of ethylene (C2H4) with air (assume oxygen (21% v/v) and nitrogen (79% v/v) only) in a fixed-bed reactor designed for manufacturing of 10 tonnes of ethylene oxide per hour. An undesired competing reaction is the combustion of ethylene to carbon dioxide. For every 100 mol of dry gas at the reactor outlet, 20.5 mol C2H4O, 72.7 mol N2 and 4.5 mol CO2 are present. The gas leaving the reactor does not contain ethylene. The reactor product is fed to a separation system where water is added to convert ethylene oxide to ethylene glycol (C2H4(OH)2). Write the chemical reaction equations. Draw a block diagram of the process showing the inlet and outlet streams of the reactor and the hydrolyser with their components. (a) (b) (c) (d) Determine: (i) The molar rate of ethylene fed. ✓(1) The molar rate of water required for the hydrolyser. The molar rate of air fed and the composition of the reactor outlet. Check the overall mass balance for the system including the reactor and the hydrolyser.
Module code: CAPE205001 2 Ethylene oxide (C2H4O) is produced by a catalytic oxidation of ethylene (C2H4) with air (assume oxygen (21% v/v) and nitrogen (79% v/v) only) in a fixed-bed reactor designed for manufacturing of 10 tonnes of ethylene oxide per hour. An undesired competing reaction is the combustion of ethylene to carbon dioxide. For every 100 mol of dry gas at the reactor outlet, 20.5 mol C2H4O, 72.7 mol N2 and 4.5 mol CO2 are present. The gas leaving the reactor does not contain ethylene. The reactor product is fed to a separation system where water is added to convert ethylene oxide to ethylene glycol (C2H4(OH)2). Write the chemical reaction equations. Draw a block diagram of the process showing the inlet and outlet streams of the reactor and the hydrolyser with their components. (a) (b) (c) (d) Determine: (i) The molar rate of ethylene fed. ✓(1) The molar rate of water required for the hydrolyser. The molar rate of air fed and the composition of the reactor outlet. Check the overall mass balance for the system including the reactor and the hydrolyser.
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:Module code: CAPE205001
2
Ethylene oxide (C2H4O) is produced by a catalytic oxidation of ethylene (C2H4) with air
(assume oxygen (21% v/v) and nitrogen (79% v/v) only) in a fixed-bed reactor designed
for manufacturing of 10 tonnes of ethylene oxide per hour. An undesired competing
reaction is the combustion of ethylene to carbon dioxide. For every 100 mol of dry gas at
the reactor outlet, 20.5 mol C2H4O, 72.7 mol N2 and 4.5 mol CO2 are present. The gas
leaving the reactor does not contain ethylene. The reactor product is fed to a separation
system where water is added to convert ethylene oxide to ethylene glycol (C2H4(OH)2).
Write the chemical reaction equations.
Draw a block diagram of the process showing the inlet and outlet streams of the
reactor and the hydrolyser with their components.
Determine:
(a)
(b)
(c)
(d)
The molar rate of ethylene fed.
The molar rate of water required for the hydrolyser.
(iii) The molar rate of air fed and the composition of the reactor outlet.
(i)
Check the overall mass balance for the system including the reactor and the
hydrolyser.
LO
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