Related Questions

At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.
A Is greater than
B Is lower than
C Is same as
D Cannot be predicted as data are insufficient
Kelly and Chris packed several boxes with books. If Chris packed 60 percent of the total number of boxes, what was the ratio of the number of boxes Kelly packed to the number of boxes Chris packed?
A 1 to 6
B 1 to 4
C 2 to 5
D 2 to 3
Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?
A Size, shape, orientation and surface of the packing particles
B Density and viscosity of fluids
C Fluid flow rates
D All of the above
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as
A Δp = G
B Δp = G0.5
C Δp = G2
D Δp = $$\frac{1}{{{{\text{G}}^{0.6}}}}$$
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
A 25-50
B 50-75
C 200-250
D 750-1000
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.
A 4-8
B 17-34
C 52-68
D 88-105
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be
A 1
B > 1
C ≤ 1
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent
A Increases
B Decreases
C Decreases linearly
D Remains unaffected
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas
A Increases
B Decreases
C Decreases linearly
D Remains unaffected

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