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Packed Absorption Column - Solving for min water rate and transfer units.

  1. May 4, 2009 #1
    Having much difficulty with the problem below. Any direction would be greatly appreciated.

    A waste gas stream contains .045 mole of ammonia per mole of carrier gas. Its desired to design an absorber using water which will reduce the ammonia concentration in the exit gas from the absorber to a max value of 600 ppm. The inlet ammonia flow is 2000 ft^3/min when measured at 1 atm and 77 degrees F. The system is to be counter flow and the operating slope line is to be 33.3 percent greater than the slope of the equilibrium line. Assume the equilibrium line is represented by y = .75x. Determine the water rate required and the number of theoretical transfer units for the packed column.
     
  2. jcsd
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