Answer Happy

A two-bed carbon adsorption system shown below is to be designed to handle 8,000 acfm of air containing 700 ppm of hexane. Laboratory studies indicate that carbon can adsorb 8 lb hexane per 100 lb carbon under the conditions at which the system will be operated. a) If the system is to operate at 90°F and 1.0 atm at a removal efficiency of 99%, determine the approximate dimensions of each carbon bed. Bed regeneration and cooling will require one hour. b) Estimate the total amount of steam required per day (in pounds) to regenerate the beds of the system. Givens: Stream + Solvent Polluted Gas Q = 8000 cfm Chex = 700 ppm Carbon Bed Carbon Bed Steam Exhaust