9. what is the weight of the activated alumina gel?

ANS. 2000 lbs

Problems 8 and 9 are based on the following information: It is required to dry natural gas containing 80 lbs of water per 106f3 by passing it through a bed of activated alumina gel in two adsorption towers. Data: Natural gas to be dried =1106ft3/ day (24hrs) Density of the alumina gel =50lb/ft Economic adsorption factor =4% water by weight (dry basis) Critical gas velocity through the tower =35fpm Temperature of natural gas =50F Pressure =225psia Economic adsorption factor refers to the amount of adsorbate per amount of adsorbent used. The height of the tower is a. 14.9ft c. 15.9ft b. 10.8ft d. 1.34ft