100 mol/h of gaseous ethane is burned with excess air. The fuel is mixed with air before entering the furnace; fuel-air mixture is fed to the furnace at 25oC and 1 atm. All the ethane is consumed in the combustion reaction that occurs in the furnace. A cooling water jacket surrounding the furnace removes all of the heat generated by the combustion reaction. The stack gas leaves the furnace at 25oC and 1 atm and contains 5.32 mole% CO2, 1.60% CO, 7.32% O2 and the balance H2O and N2. a. Write the stoichiometric equations for the complete and incomplete combustion of ethane. b. Use Hess’s Law and the Heat of Combustion to calculate ∆??o (kJ/mol) for complete and incomplete combustion of ethane. c. Calculate the molar percentage of ethane in the fuel gas and the percentage excess air fed to the reactor.
100 mol/h of gaseous ethane is burned with excess air. The fuel is mixed with air before entering the furnace; fuel-air mixture is fed to the furnace at 25oC and 1 atm. All the ethane is consumed in the combustion reaction that occurs in the furnace. A cooling water jacket surrounding the furnace removes all of the heat generated by the combustion reaction. The stack gas leaves the furnace at 25oC and 1 atm and contains 5.32 mole% CO2, 1.60% CO, 7.32% O2 and the balance H2O and N2. a. Write the stoichiometric equations for the complete and incomplete combustion of ethane. b. Use Hess’s Law and the Heat of Combustion to calculate ∆??o (kJ/mol) for complete and incomplete combustion of ethane. c. Calculate the molar percentage of ethane in the fuel gas and the percentage excess air fed to the reactor.
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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2. 100 mol/h of gaseous ethane is burned with excess air. The fuel is mixed with air before
entering the furnace; fuel-air mixture is fed to the furnace at 25oC and 1 atm. All the ethane is
consumed in the combustion reaction that occurs in the furnace. A cooling water jacket
surrounding the furnace removes all of the heat generated by the combustion reaction. The
stack gas leaves the furnace at 25oC and 1 atm and contains 5.32 mole% CO2, 1.60% CO,
7.32% O2 and the balance H2O and N2.
a. Write the stoichiometric equations for the complete and incomplete combustion of
ethane.
b. Use Hess’s Law and the Heat of Combustion to calculate ∆??o (kJ/mol) for complete and
incomplete combustion of ethane.
c. Calculate the molar percentage of ethane in the fuel gas and the percentage excess air fed
to the reactor.
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