dry-bed dehydrator

1. n. [Production Facilities]
A device that removes water and water vapor from a gas stream using two or more beds of solid desiccants, such as silica gel or calcium chloride [CaCl2]. Wet gas is passed through the solid material, which absorbs the water, and then dry gas is collected at the top of the device. The main limitation of this device is that the solid desiccant absorbs only limited quantities of water. When the desiccant saturation point is reached, it must be replaced and sometimes water cannot be removed from it.