It is assumed that the coal burned has 4.8% moisture, 10% ash and negligible sulfur and nitrogen content entering at 3180 lbs/hr. The air used is supplied at 92°F with a partial pressure for the water vapor as 20 mmHg. The combustion products contain 14.26% CO2, 0.52% CO, 0.41% H2, 4.32% O2 and 80.49% N2 exiting at 444°F with water partial pressure of 68.8 mmHg. Assume a total pressure of 750 mmHg. Establish basis as 1 hour steady-state operation. a) How much Ibmols of dry stack gas is produced? b) What is the %weight of hydrogen in the coal? c) What is the %weight of oxygen in the coal?
It is assumed that the coal burned has 4.8% moisture, 10% ash and negligible sulfur and nitrogen content entering at 3180 lbs/hr. The air used is supplied at 92°F with a partial pressure for the water vapor as 20 mmHg. The combustion products contain 14.26% CO2, 0.52% CO, 0.41% H2, 4.32% O2 and 80.49% N2 exiting at 444°F with water partial pressure of 68.8 mmHg. Assume a total pressure of 750 mmHg. Establish basis as 1 hour steady-state operation. a) How much Ibmols of dry stack gas is produced? b) What is the %weight of hydrogen in the coal? c) What is the %weight of oxygen in the coal?
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:It is assumed that the coal burned has 4.8% moisture, 10% ash and negligible sulfur
and nitrogen content entering at 3180 lbs/hr. The air used is supplied at 92°F with a
partial pressure for the water vapor as 20 mmHg. The combustion products contain
14.26% CO2, 0.52% CO, 0.41% H2, 4.32% O2 and 80.49% N2 exiting at 444°F with
water partial pressure of 68.8 mmHg.
Assume a total pressure of 750 mmHg. Establish basis as 1 hour steady-state
operation.
a) How much Ibmols of dry stack gas is produced?
b) What is the %weight of hydrogen in the coal?
c) What is the %weight of oxygen in the coal?
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