Absorption of Concentrated Mixtures in Packed Towers

The operating-line equation (10.6-4) and the equilibrium line are plotted. 

The values of the film coefficients k a and k a are obtained from empirical equations. These two film coefficients are functions of GJ, kg total gas/s-m, and G , kg total liquids/s m, where n and rrt are in the range 0.2-0.8. Using the operating-line-equation values, total V and L are calculated for different values of y and x in the tower and converted to and G,. Then values ofk a and/c(,a are calculated. If the variation between k a ov k a at the top and bottom of the tower is small, an average value can be used. 

At point Pj (yj, Xj) determine a new slope using Eq. (10.6-30) repeating step 3. Do this for several intermediate points in the tower. This slope may vary throughout the tower. 

Using the values ofy, andx,- determined, graphically integrate Eq. (10.6-14) to obtain the tower height by plotting/(y), where/(y) is as follows  

EXAMPLE 10.7-1. Design of an Absorption Tower with a Concentrated Gas Mixture 

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Figure 10.7-1. Operating line and interface compositions for Example 10.7-1. Sec. 10.7 Absorption of Concentrated Mixtures in Packed Towers...

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