Process Equipment and Plant Design Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower? Size, shape, orientation and surface of the packing particles Fluid flow rates All of these Density and viscosity of fluids Size, shape, orientation and surface of the packing particles Fluid flow rates All of these Density and viscosity of fluids ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds. 8 80 1 180 8 80 1 180 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pick out the wrong statement about the design of seive plate column and the bubble cap column. Weir height for a bubble cap plate column is the same as that for a seive plate column The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns Weir length for a bubble cap plate is the same as that for the seive plate Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate Weir height for a bubble cap plate column is the same as that for a seive plate column The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns Weir length for a bubble cap plate is the same as that for the seive plate Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Excessive liquid gradient on a tray may result in the All of these Gas blowing beneath cap skit Maldistribution of gas Back trapping All of these Gas blowing beneath cap skit Maldistribution of gas Back trapping ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Needle valves are generally not used for Smaller sizes of pipe Very accurate flow control Very large diameter pipes High pressure throttling service Smaller sizes of pipe Very accurate flow control Very large diameter pipes High pressure throttling service ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around 45 and 75 300 and 500 5 and 10 180 and 300 45 and 75 300 and 500 5 and 10 180 and 300 ANSWER DOWNLOAD EXAMIANS APP
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