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This quiz contains multiple-choice problems on common tray types and their comparison, tray capacity types, tray area definition, tray flooding mechanism, entrainment flooding, downcomer backup flooding and aeration, derating factors, entrainment, dumping, hydraulic parameters of tray, preliminary tray layout, first, second and third trails, turndown checks, spray and emulsion regime implications.
A bubble cap is a perforated tray with additional
Trays
Camps
Pooches
Holes
Sieve tray after installation gives __ to a vapour.
Bypass effect
Valve effect
Multiorifice effect
Manhole effect
An example of zero down comers is
Dual tray
Sieve tray
Cap tray
Bubble tray
The continuous flow of liquid causes
Greater efficiency
Lesser efficiency
Affordable cost
Extra cost
The fluid flows from __ in the packed column.
Top to bottom
Bottom to top
Left to right
Right to left
Stages are also called
Trays
Cascades
Flow regime
Initial plate
The tray holds up a __ dispersion.
Solid-liquid
Gas -gas
Gas-liquid
Liquid-liquid
The open region between the tray floor and cap bottom is called as
Pocket clearance
Skirt clearance
Tray clearance
Carp clearance
The sieve tray is also called
Perforated tray
Non-porous tray
Porous tray
Clear tray
If the tower hole area is 366 m^2 and the tower cross-section is 10 m^2, the free area fraction is
785 m^2
366.56 m^2
36.6 m^2
3660 m^2
The depressed region of a tray is called
Seal pan
Crack pot
Jack port
Trap port
The area of the tray column that contain the bubble cap is called
Biasing area
Active tray area
Down comer area
Perforated area
The blank region on the tray deck is called
Cracking gin
Sleeping zone
Calming zone
Professor zone
The leakage of small feed fractions from one tray to another is called
Dumping
Clicking
Greasing
Weeping
Excessive accumulation of liquid on a tray causes a phenomenon called
Regime
Flooding
Spray regime
Down comer
