a. The operators had no idea how much excess air was needed. What do you tell them? b. You need to make the report to be passed that day for the analysis of the burner gas. What analysis will you submit? The volume of the burner gas in m3/kg fuel is also needed in your report.

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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You are working for a power plant that makes use of coal tar, a type of liquid fuel, as its
raw material for burning in a boiler. This type of fuel is mainly composed of carbolic oil,
naphthalene oil, creosote oil and anthracene oil. After analyzing coal tar, you were able to
know it contains 85.9% C, 6.3% H, 2.2% S, 4.5% O and 1.1% N. You told the operators to make
use of excess air for combustion. The air was assumed to enter at 30°C with 90%RH. In order to follow DENR regulations, you took a sample of the burner gas to analyze its contents. Midway your experimentation, the equipment you used broke so it only gave you a partial analysis of 10.64% CO2, 3.19% CO and 0.64% H2.

Calculate: Establish basis in the fuel (Round everything to 4 decimal places) Note: T=300°C in SG


a. The operators had no idea how much excess air was needed. What do you tell
them?

b. You need to make the report to be passed that day for the analysis of the burner
gas. What analysis will you submit? The volume of the burner gas in m3/kg fuel is also
needed in your report.


c. The air to be supplied is controlled in m3/kg fuel, how much is needed?


d. In order to effectively maintain the stack used for the combustion products, water
formed after combustion should be regulated. What is the temperature of water in
the burner gas to avoid liquefaction?

Thank you in advance!

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