$($b$)$ Use the following data to calculate the diameter and height of a

contactor column used for dehydration of natural gas with triethylene

glycol. The contactor has $14$ bubble cap trays spaced at $30$ in apart

and the space between the top tray and the demister pad is $1\mathrm{.}5$ times

the trays spacing.

Contactor pressure $=785\mathrm{.}3$ psig

Gas inlet temperature $=89\backslash$deg F

Gas outlet temperature $=32\backslash$deg F

Compressibility factor $=0\mathrm{.}89$

Volumetric flow rate to contactor $=80$ MMscfd

Specific gravity of gas $=0\mathrm{.}59$

Specific gravity of TEG $=1\mathrm{.}11$

Souders brown constant $660$ ft$/$hr

R $=10\mathrm{.}73$ psia.ft$3/$lb$.$mol $\backslash$deg R