The purge gases from a synthetic ammonia plant contain 4% ammonia by volume and 96% hydrogen, nitrogen, argon and other inerts. This gas is to be scrubbed at 5 atmosphere pressure with water in a bubble plate tower maintained at 68°F by cooling coils. With water and inert gas rates of 0.88 and 4 lb/min-ft2 of tower cross section respectively, how many theoretical plates will be required to produce a solution containing 13% ammonia by weight? The average molecular weight of the inert gas is 21. Data: the following gives the equilibrium partial pressure of ammonia solutions at 68°F Partial pressure, torr 12 Pound NH3/100 gram H2O 1 19.2 1.5 31.7 5 50 3.75 69.6 5 166 10
The purge gases from a synthetic ammonia plant contain 4% ammonia by volume and 96% hydrogen, nitrogen, argon and other inerts. This gas is to be scrubbed at 5 atmosphere pressure with water in a bubble plate tower maintained at 68°F by cooling coils. With water and inert gas rates of 0.88 and 4 lb/min-ft2 of tower cross section respectively, how many theoretical plates will be required to produce a solution containing 13% ammonia by weight? The average molecular weight of the inert gas is 21. Data: the following gives the equilibrium partial pressure of ammonia solutions at 68°F Partial pressure, torr 12 Pound NH3/100 gram H2O 1 19.2 1.5 31.7 5 50 3.75 69.6 5 166 10
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:The purge gases from a synthetic ammonia plant contain 4% ammonia by volume and 96% hydrogen,
nitrogen, argon and other inerts. This gas is to be scrubbed at 5 atmosphere pressure with water in a
bubble plate tower maintained at 68°F by cooling coils. With water and inert gas rates of 0.88 and 4
lb/min ft2 of tower cross section respectively, how many theoretical plates will be required to produce a
solution containing 13% ammonia by weight? The average molecular weight of the inert gas is 21.
Data: the following gives the equilibrium partial pressure of ammonia solutions at 68°F
69.6
166
5
10
Partial pressure, torr
12
Pound NH3/100 gram H2O 1
19.2 31.7
1.5
5
50
3.75
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