For the acetone absorber of Figure 6.1, assuming sieve trays with 10% hole area, 3 /16 -inch holes, and 18-inch tray spacing, estimate:

(a) Column diameter for 0.85 foaming factor and 0.75 fraction flooding; 

(b) Vapor pressure drop per tray; 

(c) Number of transfer units, NG and NL, from (6-62) and (6-63), respectively; 

(d) NOG from (6-61); 

(e) Controlling resistance to mass transfer; and 

(f) EOV from (6-56). From your results, are 30 actual trays adequate?

Transcribed Image Text:

Liquid absorbent 25 °C 101.3 kPa Water Feed gas 25 °C 101.3 kPa Argon 0₂ N₂ kmol/h 1943 Water Acetone kmol/h 6.9 144.3 536.0 5.0 10.3 30 Exit gas 25 °C 90 kPa Argon 0₂ N₂ Water Acetone Figure 6.1 Typical absorption process. 0₂ N₂ Water Acetone kmol/h 6.9 144.291 535.983 22.0 Exit liquid 25 °C 101.3 kPa 0.05 kmol/h 0.009 0.017 1,926.0 10.25