Chemical Engineering - Mass Transfer - Discussion
Discussion Forum : Mass Transfer - Section 9 (Q.No. 23)
23.
H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is
Discussion:
3 comments Page 1 of 1.
Sid said:
6 years ago
Can anyone explain the answer?
Suraj said:
4 years ago
Hoy -the height of transfer based on overall gas film unit is given 0.4m
Noy- number of transfer unit when the overall driving force is in gas phase.
Z- bed height.
Z= Hoy * Noy.
Noy can be calculated from the below expression;
Noy = (A/A-1) ln [((yb/ya)(A-1) +1)/A].
Here A = 5/1.5.
Yb = 0.05.
Ya = 0.001.
Z is coming 2.036 m.
Hope it helps.
Noy- number of transfer unit when the overall driving force is in gas phase.
Z- bed height.
Z= Hoy * Noy.
Noy can be calculated from the below expression;
Noy = (A/A-1) ln [((yb/ya)(A-1) +1)/A].
Here A = 5/1.5.
Yb = 0.05.
Ya = 0.001.
Z is coming 2.036 m.
Hope it helps.
(5)
Annu said:
4 years ago
Please also anyone explain how z is 2?
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