Q. Absorption factor increases equipment cost decreases

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Q. Packed towers are _____________

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Q. Packing height in the packed tower = NTU x __________

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Q. Will the Height equivalent theoretical plates changes with flow rates?

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Q. Find the absorption tower height if

Number of gas phase transfer units 4.09
Height of gas phase transfer units 1.5 meters

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Q. Find the HTU if gas rate is 0.07 kmol/sq.m s and the Fg* a ( F type mass transfer co-efficient) is 0.06 kmol/ cu.m s.

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Q. Kremser brown equation will be invalid for gas phase transfer units if operating and equilibrium line has same slope.

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Q. Find the representation,
Where, Y- gas phase concentration in mole ratio
X-liquid phase concentration in mole ratio

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Q. Find the slope of the operating line.
Here, the concentrations are represented in mole ratio. The value of (Y1-Y2)/(X1-X2) =2. Find the slope of the operating line.

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Q. Have a look on the below diagram. Here, DE and DP are the operating line. Also Y and X are the concentrations in mole ratio for gas and liquid phase. It’s clearly a representation of an absorber.
For the operating line DE minimum liquid is required.

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Q. Find the Absorption factor from the given figure.

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Q. Find the number of trays.

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