A flare is used to convert unburnt gases into innocuous products such as CO2 and H2O. Knowing that a gas composed of 70% CH4, 5% C3H8, 15% CO, 5% O2 and 5% N2, in molar percentage, was burned in the flare with the chimney gas being 7.73% CO2, 12.35% H2O and the rest in O2 and N2, what was the percentage of excess air used? co, 0.0773H0 0.1235CH.0.70CH, + 20, - Co, + 2 H,0C,H 0.05FuelFlue gasFlareCO0.15F molC,H, + 50, → Co, + 4 H,OP mol0.05Air JA molCo + ½ 0, - Co,N20.051.00mol frs02 0.21N. 0.791.001.00

Given that, The composition (mole fraction) of the fuel CH4 : 0.7 C3H8 : 0.05 CO : 0.15 O2 : 0.05 N2…

Answered: A flare is used to convert unburnt…

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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A flare is used to convert unburnt gases into innocuous products such as CO₂ and H₂O. Knowing that a gas composed of 70% CH₄, 5% C₃H₈, 15% CO, 5% O₂ and 5% N₂, in molar percentage, was burned in the flare with the chimney gas being 7.73% CO₂, 12.35% H₂O and the rest in O₂ and N₂, what was the percentage of excess air used?