Process Equipment and Plant Design Overall tray efficiency of a distillation column is the ratio of the number of Real trays required to the number of ideal trays required None of these Overall gas transfer units to the number of ideal trays required Ideal trays required to the number of real trays required Real trays required to the number of ideal trays required None of these Overall gas transfer units to the number of ideal trays required Ideal trays required to the number of real trays required ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter. 2 ft irrespective of (for column > 3 ft diameter) 0.6-0.8 times Twice Equal to 2 ft irrespective of (for column > 3 ft diameter) 0.6-0.8 times Twice Equal to ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Joint efficiency (J) for a seamless pipe is 1.2 < 0.5 1 0.85 1.2 < 0.5 1 0.85 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Optimum reflux ratio in a continuous distillation column is determined by the Flooding limit of the column None of these Total cost consideration (fixed cost of the column plus the cooling water & steam cost) Maximum permissible vapour velocity Flooding limit of the column None of these Total cost consideration (fixed cost of the column plus the cooling water & steam cost) Maximum permissible vapour velocity ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design __________ shaped roof is most commonly used for cylindrical tanks. Umbrella Flat Dome Cone Umbrella Flat Dome Cone ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Weep holes provided in the plates of a distillation column All of these Facilitate draining out liquid from a tray when the unit is not in 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 Must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation All of these Facilitate draining out liquid from a tray when the unit is not in 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 Must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation ANSWER DOWNLOAD EXAMIANS APP
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