An adsorbent bed containing 25,000 lbm (11,360 kg) of adsorbent removes 50 lbm/MMscf (848 kg/106 Nm3 ) of water from a gas stream flowing at 100 MMscfd (2.68×106 Nm3/d) over an 8-h period. The bed is...

An adsorbent bed containing 25,000 lbm (11,360 kg) of adsorbent removes 50 lbm/MMscf (848 kg/106 Nm3 ) of water from a gas stream flowing at 100 MMscfd (2.68×106 Nm3/d) over an 8-h period. The bed is regenerated with a 10% slipstream of dry gas for 5 h. The regeneration furnace generates 5.0 MMBtu/h (1.47 MW). (a) Assuming all adsorbed water is removed, how much heat is required to regenerate the bed on a per lbm (kg) of water removed? (b) Compare the heat required to remove the water with heat of vaporization at the normal boiling point on a per lbm (kg) basis (Note that the regeneration heat is the total heat going to the bed, not the actual amount of heat absorbed by the bed, vessel walls, and moisture.)