It is required to dry natural gas containing 80 lbs of water per 106 ft³ by passing it through a bed of activated alumina gel in two adsorption towers. Data: Natural gas to be dried Density of the alumina gel Economic adsorption factor Critical gas velocity through the tower Temperature of natural gas Pressure = 1 x 10°ft³/day(24hrs) = 50 lb/ft = 4% water by weight (dry basis) = 35 fpm = 50°F = 225 psia Economic adsorption factor refers to the amount of adsorbate per amount of adsorbent used. The weight of the activated alumina gel required is a. 1000 lbs b. 2000 lbs c. 3000 lbs d. 1500 lbs

Briefly explain the thermal spray coating process (coating of metal with powder) with diagram   Do not write in a piece of paper