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1. Gaseous fuel consists of 20% CH4, 10% C2H6, 25% C3H8, 25%H2, 5% CO, 3% CO2, 3% O2, 4 % N2 and 5% H2S. Calculate the theoretical oxygen in air.

1. Gaseous fuel consists of 20% CH4, 10% C2H6, 25% C3H8, 25%H2, 5% CO, 3% CO2, 3% O2, 4 % N2 and 5% H2S. Calculate the theoretical oxygen in air.

Introduction to Chemical Engineering Thermodynamics
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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Problem Set no. 2 (Stoichiometry 2- COMBUSTION) 1. Gaseous fuel consists of 20% CH4, 10% C2H6, 25% C3H8, 25%H2, 5% CO, 3% CO2, 3% O2, 4% N2 and 5% H2S. Calculate the theoretical oxygen in air. 2. Pure ethane is burned completely in 20% excess air. Air is supplied at 25oC, 740 torrs and is substantially dry. Calculate: a) Orsat analysis of the products of combustion b) kg dry air supplied/kg of fuel gas c) Cubic meters of air/ kg ethane d) Cubic meters of the products of combustion measured at 4000C, 100 a /kg ethane e) Partial pressure of water in the products of combustion 3. Pure methane is burned with 40% excess air and 25% of its carbon content is converted to CO the rest to CO2. 90% of its hydrogen burns to water, the rest remains as unburned H2. Air supplied is at 230C, 758 mm Hg with 80% RH. Calculate: a) Orsat analysis of the combustion products b) m3 of air supplied per kg methane c) m3 of combustion products at 3500C and normal barometric pressure per kg methane. 4. A pure saturated hydrocarbon (CnH2n+2) is burned with excess air. Orsat analysis of the products of combustion shows 9.08% CO2, 1.63% CO, 5.28% 02 and no free H2. Calculate: a) The formula of the hydrocarbon b) % excess air c) kg dry air/kg of hydrocarbon
Transcribed Image Text:Problem Set no. 2 (Stoichiometry 2- COMBUSTION) 1. Gaseous fuel consists of 20% CH4, 10% C2H6, 25% C3H8, 25%H2, 5% CO, 3% CO2, 3% O2, 4% N2 and 5% H2S. Calculate the theoretical oxygen in air. 2. Pure ethane is burned completely in 20% excess air. Air is supplied at 25oC, 740 torrs and is substantially dry. Calculate: a) Orsat analysis of the products of combustion b) kg dry air supplied/kg of fuel gas c) Cubic meters of air/ kg ethane d) Cubic meters of the products of combustion measured at 4000C, 100 a /kg ethane e) Partial pressure of water in the products of combustion 3. Pure methane is burned with 40% excess air and 25% of its carbon content is converted to CO the rest to CO2. 90% of its hydrogen burns to water, the rest remains as unburned H2. Air supplied is at 230C, 758 mm Hg with 80% RH. Calculate: a) Orsat analysis of the combustion products b) m3 of air supplied per kg methane c) m3 of combustion products at 3500C and normal barometric pressure per kg methane. 4. A pure saturated hydrocarbon (CnH2n+2) is burned with excess air. Orsat analysis of the products of combustion shows 9.08% CO2, 1.63% CO, 5.28% 02 and no free H2. Calculate: a) The formula of the hydrocarbon b) % excess air c) kg dry air/kg of hydrocarbon
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