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chemical engineering process equipment and plant design
1. Weep holes provided in the plates of a distillation column
(A): all (a), (b) and (c).
(B): are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid.
(C): facilitate draining out liquid from a tray when the unit is not in operation.
(D): must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation.
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