SUNNZATION: The need to reduce the emission of different acidic pollutants to the atmosphere has led to extensive research on their removal from waste and flue gases. While large-scale cleaning ********* Vally employ relatively inexpensive calcium or magnesium-based sorbents, ential of Nascos decahydrate should also be explored. Such very effective materials can be employed for capture of gaseous, weak acidic pollutants and difficult odors. A practical way of contacting gases (air in this case) with particulate solids is provided by a fluidized bed. The knowledge of the minimum fluidization makes it possible to model the performance of a Sized bed (bubbling) reactor since it permits the prediction of the amount of gas which passes through the bed in the form of bubbles. 85% of the hydrated crystals collected during crystallization will be used as a fluidizing sorbent bed to remove acidic pollutant and difficult odors from gas at 30°C whose density is 1.23 and viscosity of 1.82x10 Pa s. kg Sire analysis of hydrated crystals (Na CO Size Range, micron m3 10H2O) collected from crystallizer: Mass Fraction 10-30 0.20 30-50 0.65 50-70 0.15 Na2CO3-10H20 crystals has a particle density of 1390 kg m3 and sphericity of 0.85. The fluidized bed has a cross sectional area of 2.5 square meter. The bed is fluidized by the incoming gas pollutant at a gas flow rate of 1.35 cubic meters per minute. *For particles for which no data exist, the following equation has been proposed for gas-solid fluidization at 1 atm : EM = 1.0 - 0.356 [ log10 Dp - 1] Estimate: where : Dp = particle diameter in micron (μm) a. the minimum fluidization velocity, Umf; b. the bed height at incipient fluidization; c. the bubble fraction; d. the mean bubbling bed height; e. the mean bubbling bed voidage.
SUNNZATION: The need to reduce the emission of different acidic pollutants to the atmosphere has led to extensive research on their removal from waste and flue gases. While large-scale cleaning ********* Vally employ relatively inexpensive calcium or magnesium-based sorbents, ential of Nascos decahydrate should also be explored. Such very effective materials can be employed for capture of gaseous, weak acidic pollutants and difficult odors. A practical way of contacting gases (air in this case) with particulate solids is provided by a fluidized bed. The knowledge of the minimum fluidization makes it possible to model the performance of a Sized bed (bubbling) reactor since it permits the prediction of the amount of gas which passes through the bed in the form of bubbles. 85% of the hydrated crystals collected during crystallization will be used as a fluidizing sorbent bed to remove acidic pollutant and difficult odors from gas at 30°C whose density is 1.23 and viscosity of 1.82x10 Pa s. kg Sire analysis of hydrated crystals (Na CO Size Range, micron m3 10H2O) collected from crystallizer: Mass Fraction 10-30 0.20 30-50 0.65 50-70 0.15 Na2CO3-10H20 crystals has a particle density of 1390 kg m3 and sphericity of 0.85. The fluidized bed has a cross sectional area of 2.5 square meter. The bed is fluidized by the incoming gas pollutant at a gas flow rate of 1.35 cubic meters per minute. *For particles for which no data exist, the following equation has been proposed for gas-solid fluidization at 1 atm : EM = 1.0 - 0.356 [ log10 Dp - 1] Estimate: where : Dp = particle diameter in micron (μm) a. the minimum fluidization velocity, Umf; b. the bed height at incipient fluidization; c. the bubble fraction; d. the mean bubbling bed height; e. the mean bubbling bed voidage.
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
![SUNNZATION:
The need to reduce the emission of different acidic pollutants to the atmosphere has led to
extensive research on their removal from waste and flue gases. While large-scale cleaning
********* Vally employ relatively inexpensive calcium or magnesium-based sorbents,
ential of Nascos decahydrate should also be explored. Such very effective materials can be
employed for capture of gaseous, weak acidic pollutants and difficult odors. A practical way of
contacting gases (air in this case) with particulate solids is provided by a fluidized bed. The
knowledge of the minimum fluidization makes it possible to model the performance of a
Sized bed (bubbling) reactor since it permits the prediction of the amount of gas which
passes through the bed in the form of bubbles.
85% of the hydrated crystals collected during crystallization will be used as a fluidizing sorbent
bed to remove acidic pollutant and difficult odors from gas at 30°C whose density is 1.23
and viscosity of 1.82x10 Pa s.
kg
Sire analysis of hydrated crystals (Na CO
Size Range, micron
m3
10H2O) collected from crystallizer:
Mass Fraction
10-30
0.20
30-50
0.65
50-70
0.15
Na2CO3-10H20 crystals has a particle density of 1390
kg
m3
and sphericity of 0.85. The fluidized
bed has a cross sectional area of 2.5 square meter. The bed is fluidized by the incoming gas
pollutant at a gas flow rate of 1.35 cubic meters per minute.
*For particles for which no data exist, the following equation has been proposed for gas-solid
fluidization at 1 atm : EM = 1.0 - 0.356 [ log10 Dp - 1]
Estimate:
where :
Dp = particle diameter in micron (μm)
a. the minimum fluidization velocity, Umf;
b. the bed height at incipient fluidization;
c. the bubble fraction;
d. the mean bubbling bed height;
e. the mean bubbling bed voidage.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdd1585f7-e8c3-448e-85a6-28a8faf15ecb%2Ff64e6da2-abe8-4175-88e4-85946da03374%2F6rcqkmu_processed.jpeg&w=3840&q=75)
Transcribed Image Text:SUNNZATION:
The need to reduce the emission of different acidic pollutants to the atmosphere has led to
extensive research on their removal from waste and flue gases. While large-scale cleaning
********* Vally employ relatively inexpensive calcium or magnesium-based sorbents,
ential of Nascos decahydrate should also be explored. Such very effective materials can be
employed for capture of gaseous, weak acidic pollutants and difficult odors. A practical way of
contacting gases (air in this case) with particulate solids is provided by a fluidized bed. The
knowledge of the minimum fluidization makes it possible to model the performance of a
Sized bed (bubbling) reactor since it permits the prediction of the amount of gas which
passes through the bed in the form of bubbles.
85% of the hydrated crystals collected during crystallization will be used as a fluidizing sorbent
bed to remove acidic pollutant and difficult odors from gas at 30°C whose density is 1.23
and viscosity of 1.82x10 Pa s.
kg
Sire analysis of hydrated crystals (Na CO
Size Range, micron
m3
10H2O) collected from crystallizer:
Mass Fraction
10-30
0.20
30-50
0.65
50-70
0.15
Na2CO3-10H20 crystals has a particle density of 1390
kg
m3
and sphericity of 0.85. The fluidized
bed has a cross sectional area of 2.5 square meter. The bed is fluidized by the incoming gas
pollutant at a gas flow rate of 1.35 cubic meters per minute.
*For particles for which no data exist, the following equation has been proposed for gas-solid
fluidization at 1 atm : EM = 1.0 - 0.356 [ log10 Dp - 1]
Estimate:
where :
Dp = particle diameter in micron (μm)
a. the minimum fluidization velocity, Umf;
b. the bed height at incipient fluidization;
c. the bubble fraction;
d. the mean bubbling bed height;
e. the mean bubbling bed voidage.
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