Fluidization Engineering

Entrainment at or Above the TDH-Size Distribution of Solids

Question 1
Marks : +2 | -2
Pass Ratio : 100%
From above figure, how increase in pressure is affecting the velocity of solid particles?
Decreases
Increases
No change
Fluctuating
Explanation:
From experimental data provided.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Based on which property the solids get separated while elutrition?
Size
Shape
Density
All of the mentioned
Explanation:
Various factors are responsible for elutrition to take place.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
From above figure, what is the diameter of particles with respect to ‘E\'(Hint: Catalyst)?
0.051 mm
0.074 mm
0.094 mm
0.162 mm
Explanation:
Larger the particles size, lately entrainment will take place.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
How does the introduction of internals in the bed help in elutrition?
Separate big size particles
Separate small size particles
Breaks large particles
None of the mentioned
Explanation:
Prevents larger particles by forming an obstruction and breaking them.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
From above figure, what is the diameter of particles with respect to ‘A\'(Hint: Glass sphere)?
0.051 mm
0.074 mm
0.094 mm
0.162 mm
Explanation:
Smaller the particles size, early entrainment will take place.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
From above figure, what is the diameter of particles with respect to ‘B\'(Hint: Glass sphere)?
0.051 mm
0.074 mm
0.094 mm
0.162 mm
Explanation:
Medium particles size, at moderate time the entrainment will take place.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
From above figure, what is the diameter of particles with respect to ‘C\'(Hint: Glass sphere)?
0.051 mm
0.074 mm
0.094 mm
0.162 mm
Explanation:
Larger the particles size, lately the entrainment will take place.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
From above figure, how decrease in pressure is affecting the velocity of solid particles?
Decreases
Increases
No change
Fluctuating
Explanation:
From experimental data provided.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Total entrainment rate= SUM(entrainment rate of particle size*fraction of that size in bed) , true or false?
True
False
Explanation:
Derived from theoretical knowledge and applying maths.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
For particles to not reach the TDH, what is the condition required?
Ut<Uo
Ut>Uo
Ut=Uo
Ut<=Uo
Explanation:
Velocity at which it just reaches the bottom of TDH.