Answered: In the preliminary design of a furnace…

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

Process

In the preliminary design of a furnace for industrial boiler, methane at 25 C is burned completely with 20% excess air, also at 25 C. The feed rate of methane is 450 kmol/h. The hot combustion gases leave the furnace at 300 C and are discharged to the atmosphere. The heat transferred from the furnace (Q ) is used to convert boiler feedwater at 25 C into superheated steam at 17 bar and 250 C.

Instruction:

Just write the methane combustion process in the combustion furnace to the boiler

Note

I don't want calculations please!

n. (kmol air / h)@25°C
0.21 kmol 0, / kmol
0.79 kmol N, / kmol
Stack gas@ 300°C
й, (kmol CO, /h)
n, (kmol H,0/h)
450 kmol CH, /h @ 25°с оь)
nz (kmol O2 / h)
n, (kmol N, / h)
m (kg H ,O(1) /h]
n, (kg H ,0(v) / h],
25°C
17 bar, 250°C

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