Coal containing 4.00 wt% S is burned at a rate of 1250.0 lbm/min in a boiler furnace. All of the sulfur in the coal is oxidized to SO2. The product gas is sent to a scrubber in which most of the SO2 is removed, and the scrubbed gas with the remaining SO2 then passes out of a stack to the atmosphere. An Environmental Protection Agency regulation requires that the gas in the stack must contain no more than 0.0180 lbm SO2/lbm of coal burned. To test compliance with this regulation a flowmeter and an SO2 analyzer are mounted in the stack. The volumetric flow rate of the scrubbed gas is found to be 2867 ft³/s and the SO2 analyzer reading is 45.0. Calibration data for the analyzer are given in the table below. Concentration of SO2 SO2 Analyzer Calibration Data C (g SO2/m³ gas) Reading (0-100 scale) 0.3 10.0 0.85 28.0 2.67 48.0 7.31 65.0 18.2 81.0 30.0 90.0 What is the concentration of SO2 in the outlet stack gas? i x 10-5 lbm/ft³ SUPPORT Emissions How many Ibm of SO2 are emitted in the stack gas per Ibm of coal burned? i x 10-3 lbm SO2/lbm coal Hint Save for Later Percent Removal Attempts: 0 of 3 used Submit Answer What percentage of SO 2 produced in the furnace is removed in the scrubber? % Hint Save for Later Attempts: 0 of 3 used Submit Answer
Coal containing 4.00 wt% S is burned at a rate of 1250.0 lbm/min in a boiler furnace. All of the sulfur in the coal is oxidized to SO2. The product gas is sent to a scrubber in which most of the SO2 is removed, and the scrubbed gas with the remaining SO2 then passes out of a stack to the atmosphere. An Environmental Protection Agency regulation requires that the gas in the stack must contain no more than 0.0180 lbm SO2/lbm of coal burned. To test compliance with this regulation a flowmeter and an SO2 analyzer are mounted in the stack. The volumetric flow rate of the scrubbed gas is found to be 2867 ft³/s and the SO2 analyzer reading is 45.0. Calibration data for the analyzer are given in the table below. Concentration of SO2 SO2 Analyzer Calibration Data C (g SO2/m³ gas) Reading (0-100 scale) 0.3 10.0 0.85 28.0 2.67 48.0 7.31 65.0 18.2 81.0 30.0 90.0 What is the concentration of SO2 in the outlet stack gas? i x 10-5 lbm/ft³ SUPPORT Emissions How many Ibm of SO2 are emitted in the stack gas per Ibm of coal burned? i x 10-3 lbm SO2/lbm coal Hint Save for Later Percent Removal Attempts: 0 of 3 used Submit Answer What percentage of SO 2 produced in the furnace is removed in the scrubber? % Hint Save for Later Attempts: 0 of 3 used Submit Answer
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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Transcribed Image Text:Coal containing 4.00 wt% S is burned at a rate of 1250.0 lbm/min in a boiler furnace.
All of the sulfur in the coal is oxidized to SO2.
The product gas is sent to a scrubber in which most of the SO2 is removed, and the scrubbed gas with the
remaining SO2 then passes out of a stack to the atmosphere.
An Environmental Protection Agency regulation requires that the gas in the stack must contain no more than
0.0180 lbm SO2/lbm of coal burned.
To test compliance with this regulation a flowmeter and an SO2 analyzer are mounted in the stack.
The volumetric flow rate of the scrubbed gas is found to be 2867 ft³/s and the SO2 analyzer reading is 45.0.
Calibration data for the analyzer are given in the table below.
Concentration of SO2
SO2 Analyzer Calibration Data
C (g SO2/m³ gas) Reading (0-100 scale)
0.3
10.0
0.85
28.0
2.67
48.0
7.31
65.0
18.2
81.0
30.0
90.0
What is the concentration of SO2 in the outlet stack gas?
i
x 10-5 lbm/ft³
SUPPORT
Transcribed Image Text:Emissions
How many Ibm of SO2 are emitted in the stack gas per Ibm of coal burned?
i
x 10-3 lbm SO2/lbm coal
Hint
Save for Later
Percent Removal
Attempts: 0 of 3 used
Submit Answer
What percentage of SO 2 produced in the furnace is removed in the scrubber?
%
Hint
Save for Later
Attempts: 0 of 3 used
Submit Answer
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