A coal analysing 65.4 % C, 5.3 % H, 0.6 % S, 1.1 % N, 18.5 % O, and 9.1 % ash is burned so that all combustible is burned out of the ash. The flue gas analyses 13.00 % CO2, 0.76 % CO, 6.17 % O2, 0.87 % H2, and 79.20 % N2. All of the sulphur burns to SO2, which is included in the CO2 figure in the gas analysis (i.e., CO2 + SO2 = 13.00 %). Calculate a. Pounds of coal fired per 100 lb mol of dry flue gas as analysed b. Ratio of moles of total combustion gases to moles of dry air supplied c. Total moles of water vapor in the stack gas per 100 Ib of coal if the entering air is dry d. Percent excess air %3D
A coal analysing 65.4 % C, 5.3 % H, 0.6 % S, 1.1 % N, 18.5 % O, and 9.1 % ash is burned so that all combustible is burned out of the ash. The flue gas analyses 13.00 % CO2, 0.76 % CO, 6.17 % O2, 0.87 % H2, and 79.20 % N2. All of the sulphur burns to SO2, which is included in the CO2 figure in the gas analysis (i.e., CO2 + SO2 = 13.00 %). Calculate a. Pounds of coal fired per 100 lb mol of dry flue gas as analysed b. Ratio of moles of total combustion gases to moles of dry air supplied c. Total moles of water vapor in the stack gas per 100 Ib of coal if the entering air is dry d. Percent excess air %3D
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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Please help me answer 4 b, c and d. What is meant by "total combustion gases" in 4b?
Transcribed Image Text:4. A coal analysing 65.4 % C, 5.3 % H, 0.6 % S, 1.1 % N, 18.5 % O, and 9.1 % ash is burned
so that all combustible is burned out of the ash. The flue gas analyses 13.00 % CO2,
0.76 % CO, 6.17 % O2, 0.87 % H2, and 79.20 % N2. All of the sulphur burns to SO2, which
is included in the CO2 figure in the gas analysis (i.e., CO2 + SO2 = 13.00 %). Calculate
a. Pounds of coal fired per 100 lb mol of dry flue gas as analysed
b. Ratio of moles of total combustion gases to moles of dry air supplied
c. Total moles of water vapor in the stack gas per 100 lb of coal if the entering air is
dry
d. Percent excess air
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