A column of $350$ mm inside diameter, packed with $25$ mm A column of $350mm$ inside diameter, packed with $25mm$ plastic Pall rings to a depth of $4\mathrm{.}0m,$ is already available. This column is now being considered for a new absorption operation. The flow rate of the gas to be processed is $7\mathrm{.}2$kmo$\frac{l}{h}$ and the solute content of this gas should be reduced from $2\%$ to $0\mathrm{.}1\%$ by volume. The operation will be carried out counter$-$currently at $27C$ and $1$ bar. The liquid solvent, which is solute free, will be introduced at a flow rate which is $1\mathrm{.}5$ times minimum solvent rate.

At these conditions, height of an overall gas transfer unit, Hos is calculated as $0\mathrm{.}56m.$ Gas fan connected to the column can develop a pressure difference of $400\frac{N}{m^2}$ along $4\mathrm{.}0m$ packed height. Equilibrium relationship of the system is given as $y=1\mathrm{.}6x,$ where $y$ and $x$ are the mole fractions of the solute in gas and liquid phases, respectively. Find out whether this column can be used for the new operation or not under the given conditions. If your answer is not, what alterations would you recommend?

Density and viscosity of the liquid at $27C$ are $910k\frac{g}{m^3}$ and $1\mathrm{.}2cP.$ The molecular weights of liquid and gas are $55$ and $31k\frac{g}{k}$mol.plastic Pall rings to a depth of $4\mathrm{.}0$ m$,$ is already available. This column is now being considered for a new absorption operation. The flow rate of the gas to be processed is $7\mathrm{.}2$ kmol$/$h and the solute content of this gas should be reduced from $2\%$ to $0\mathrm{.}1\%$ by volume. The operation will be carried out counter$-$currently at $27\backslash$deg C and $1$ bar. The liquid solvent, which is solute free, will be introduced at a flow rate which is $1\mathrm{.}5$ times minimum solvent rate. At these conditions, height of an overall gas transfer unit, HOG is calculated as $0\mathrm{.}56$ m$.$ Gas fan

connected to the column can develop a pressure difference of $400$ N$/$m$2$ along $4\mathrm{.}0$ m packed height.

Equilibrium relationship of the system is given as y $=1\mathrm{.}6$x$,$ where y and x are the mole fractions of the solute in gas and liquid phases, respectively. Find out whether this column can be used for the new operation or not under the given conditions. If your answer is not, what alterations would you

recommend?

Density and viscosity of the liquid at $27\backslash$deg C are $910$ kg$/$m$3$ and $1\mathrm{.}2$ cP$.$ The molecular weights of liquid

and gas are $55$ and $31$ kg$/$kmol$.$