Answered: a chemical engineer working for a power…

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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Question

a chemical engineer working for a power plant industry. One of her operators told her that the valve, operating automatically, that allows air to enter the furnace is broken. So they have to manually turn the valve for air to enter. If the analysis of the products of combustion measured from the stack contains 14.26% CO2, 0.52% CO. 0.41% H2, 4.32% O2 and 80.49% N2. These gases exit at a temperature of 444°F with a partial pressure for the water as 20 mmHg. The air entering the furnace is at a temperature of 92°F with a partial pressure for the water vapor as 20 mmHg. The coal used in the furnace carries 4.8% moisture, 10% ash and has a low sulfur and nitrogen content fired at 3180 lbs/hr. The barometer is 750 mmHg and combustibles are well burnt out of the refuse. a. What should be the pounds of air per pound of coal entering the furnace? b. Also, complete the coal's ultimate analysis.

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