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This quiz contains multiple-choice problems on packing types and objectives, random packing and its types, wire mesh structured packing, corrugated structured packings, grids types, flow regimes’ efficiency, flood point concept and prediction, packing factors, loading point, column sizing criteria, minimum wetting rate, trays and packings comparison.
The abbreviation IMTP represents
Intermediate metal thrust packing
Inverse metal tertiary packing
Intalox metal tower packing
Indian metal tower packing
The phenomenon of liquid flow towards the tower wall and dispersed in the lateral direction is called
Channeling
Flow casting
Entraining
Regimens
Mellacarbon packing has a surface area of nearly
500-600 m^2/m^3
800-1000 m^2/m^3
125-700 m^2/m^3
300-900 m^2/m^3
Gauze packings have an F-factor of
2-2.5√Pa
5 √Pa
1-2.5 √Pa
1-2√Pa
Pressure drops per theoretical stage of Mellapak packings are
1.0 to 2.1 mbar
0.3 to 1.0 mbar
2.3 to 1.2 mbar
5.6 to 7.3 mbar
Mellapak structured packings have a crimp angle of
45° or 60°
Sinusoidal
Sharp angle
90°
Carbon steel has wall thickness and void age of __, respectively.
½ in and 92%
1/8 in and 74%
2/3 in and 70%
¼ in and 50%
Modern packing that is most commonly used in the columns is
Norton Hy-Pak
Flexirings
Berl saddle
Pall ring
Flooding, frothing, and entrainment are the three main phenomena limiting the tray capacity. True or false?
True
False
The flow of vapour liquid in the same direction is defined as
Dual flo
Co-flo
Comer flo
Coal flo
Bubble columns are used for
Waste water treatment
Effluent treatment
Chlorine treatment
Sodium treatment
For liquid and solid handling that are corrosive,
The bubble tower is used
The Venturi scrubber is used
The spray tower is used
The agitated vessel is used
The Venturi scrubber operates at velocities as high as
250 ft/s
100 ft/s
200 ft/s
150 ft/s
Which of the following is the oldest type of tower packing?
Asbestos
Raschig rings
Wood
PVC
Shells are generally made of
Copper
Iron
Wood
Ceramics
