Related Questions

Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.
A Less than
B More than
C Same as
D None of these
Slugging occurs in a fluidised bed, if the bed is
A Narrow
B Deep
C Both A & B
D Neither A nor B
The velocity at which individual particles from a fluidised bed are carried away by the fluid passing through it, is defined as the
A Minimum fluidisation velocity
B Terminal velocity
C Elutriation velocity
D Superficial velocity
The main factor on which the behaviour of a mass of fluidised solid depends mainly is the
A Fluid characteristics
B Particle size
C Both A and B
D Neither A nor B
For a fluidised bed reactor, the most suitable/relevant model is a __________ model.
A Tank in series
B Bubbling bed
C Plug flow
D None of these
For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.
A Physical
B Chemical
C Both A and B
D Neither A nor B
Which of the following is used as a catalyst in fluidised bed catalytic cracking?
A Silica-magnesia
B Silica-alumina
C Bentonite clays
D All of the above
Fluidised bed reactor is characterised by
A Uniformity of temperature
B Comparatively smaller equipment
C Very small pressure drop
D Absence of continuous catalyst regeneration facility
Slugging in a fluidised bed can be avoided by using
A Tall narrow vessel
B Deep bed of solids
C Shallow beds of solids and proper choice of particle size
D Very large particles
In a fluidised bed reactor
A Temperature gradients are very high
B Temperature is more or less uniform
C Hot spots are formed
D Segregation of the solids occurs

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