A burner used Pittsburgh coal analyzing 14.1% ash, 2.1% N, 4.3% S. Excess air is supplied dry at 22⁰C and 1 atm. The stack gases at 285⁰C, 765 mm Hg analyzes 9.65% CO2, 1.16% CO, 0.24% SO2, 0.58% H2 and 9.16% O2.Calculate:a) % excess airb) complete ultimate analysis of the coal,c) m3 air/kg coal andd) m3 stack gas /kg coal.Establish basis in the stack gas.

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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 burner used Pittsburgh coal analyzing 14.1% ash, 2.1% N, 4.3% S. Excess air is supplied dry at 22⁰C and 1 atm. The stack gases at 285⁰C, 765 mm Hg analyzes 9.65% CO₂, 1.16% CO, 0.24% SO₂, 0.58% H₂ and 9.16% O₂.

Calculate:

a) % excess air

b) complete ultimate analysis of the coal,

c) m3 air/kg coal and

d) m3 stack gas /kg coal.

Establish basis in the stack gas.

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