Absorber for dehydrating gas using desiccants

摘要

An improved absorber for dehydrating gas having water entrained therein utilizing liquid desiccants, the absorber being in the form of an upright cylindrical vessel having an upper and a lower partition dividing the vessel into an upper zone, a middle zone and a lower zone, the upper zone having a gas inlet therein and functioning as a desurging zone and the upper zone having a distribution gas outlet. A gas distribution conduit exteriorly of the vessel conducts the gas from the upper zone into the lower zone. A plurality of short length cylindrical members extend through the lower partition and are covered above the partition with cups. Above the lower partition is a quantity of packing and above the packing, in the middle zone, is a liquid desiccant inlet and above that, a dehydrated gas outlet. By means of a liquid desiccant outlet and an equalizer conduit connected to a branch fitting the level of liquid desiccant in the middle zone is controlled, the level being preferably less than the full height of the packing in the middle zone. Gas flows upwardly in the middle zone while liquid desiccant flows downwardly, the water in the gas being absorbed so that the gas flowing out the outlet is substantially dehydrated.