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1. Methanol is being absorbed by water in a packed tower having a cross sectional area of 0.150m2 at 313.1K and 1atm. The inlet air
1. Methanol is being absorbed by water in a packed tower having a cross sectional area of 0.150m2 at 313.1K and 1atm. The inlet air contains 3.0mol% methanol and outlet 0.5 mol% methanol. The inert gas flow is 14.0kmol/h. The pure water inlet flow is 50.0kmol/h. Mass transfer coefficients (Film coefficients) for the given flows in the tower are k'ya = 4.0102kmol/s3mol frac. And ka=7.0102kmol/sm3mol frac. a) Calculate the tower height using kya ( 20 points) b) Calculate the tower height using k ( ( 20 points) c) Calculate K 'xa, and the tower height ( 20 points) (1x1)MKxa1=(1y1)iMmkya1+(1x1)iMkxa1 (1x1)M=ln[(1x1)/(1x1)](1x1)(1x1) (xx)M=ln[(x1x1)/(x2x2)](x1x1)(x2x2) d) Use Transfer units, HG and NG, to calculate tower height. (10 points) e) Use Transfer units, HoG and NoG, to calculate tower height. (20 points) f) Use Kremser Analytical Equation to get NoG and tower height. (10 points) 1. Methanol is being absorbed by water in a packed tower having a cross sectional area of 0.150m2 at 313.1K and 1atm. The inlet air contains 3.0mol% methanol and outlet 0.5 mol% methanol. The inert gas flow is 14.0kmol/h. The pure water inlet flow is 50.0kmol/h. Mass transfer coefficients (Film coefficients) for the given flows in the tower are k'ya = 4.0102kmol/s3mol frac. And ka=7.0102kmol/sm3mol frac. a) Calculate the tower height using kya ( 20 points) b) Calculate the tower height using k ( ( 20 points) c) Calculate K 'xa, and the tower height ( 20 points) (1x1)MKxa1=(1y1)iMmkya1+(1x1)iMkxa1 (1x1)M=ln[(1x1)/(1x1)](1x1)(1x1) (xx)M=ln[(x1x1)/(x2x2)](x1x1)(x2x2) d) Use Transfer units, HG and NG, to calculate tower height. (10 points) e) Use Transfer units, HoG and NoG, to calculate tower height. (20 points) f) Use Kremser Analytical Equation to get NoG and tower height. (10 points)
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