Answered: a. % excess air b. Orsat analysis of…

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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Steam boiler is fired with a coal having the following analysis: Ultimate analysis: 60%C, 14%H, 16%O, and 10%Ash. Proximate analysis: 40% FC, 41%VCM, 10%ash and 9%moisture. 17,860 ft³ of wet air is supplied per 100 lbs of coal fired. The wet air is at 750 mm Hg, 60°F and the water vapor in it exerts a partial pressure of 10 mmHg. The dry refuse from this furnace contains 11.2% FC, 9.3% VCM and 79.5% ash. Because of poor operation, only 80% of the carbon burned forms CO₂, the rest forms CO.

Calculate:

a. % excess air

b. Orsat analysis of the stack gas

c. Partial pressure of water vapor in the stack gas if the total pressure is 730 mmHg

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