Process Equipment and Plant Design Weep holes provided in the plates of a distillation column Must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation Are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid All of these Facilitate draining out liquid from a tray when the unit is not in operation Must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation Are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid All of these Facilitate draining out liquid from a tray when the unit is not in operation ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Accidents in chemical plants are mostly due to Improper layout of the equipments Faulty operating procedures Failure of equipments Inadequate equipment design Improper layout of the equipments Faulty operating procedures Failure of equipments Inadequate equipment design ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing. 100-150 1000-1500 43835 20-40 100-150 1000-1500 43835 20-40 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling. NH₃ None of these SO₂ CO₂ NH₃ None of these SO₂ CO₂ ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Floating head heat exchangers are used for the Counter-current heat transfer systems Heat transfer between corrosive fluids Cases where temperature difference between the shell and the tubes is more (>50°C) Co-current heat transfer systems Counter-current heat transfer systems Heat transfer between corrosive fluids Cases where temperature difference between the shell and the tubes is more (>50°C) Co-current heat transfer systems ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Employs high velocity, high heat transfer rate and less heating surface requirement Is economical in operation Both B & C Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Employs high velocity, high heat transfer rate and less heating surface requirement Is economical in operation Both B & C ANSWER DOWNLOAD EXAMIANS APP
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