In an oil field, the produced low$-$pressure gas is compressed, cooled and mixed with the cooled high$-$pressure gas. Then, the gas mixture is dried $($dew point of $-100F)$ and delivered to gas plant for further processing.

F$1=20$MMSCFD; $150$F and $250$ Psia.

F$2=100$ MMSCFD; $T=150F$ and $700$ Psia.

In each cooler, the gas is cooled to $100F.$ Pressure drop in each cooler$=10$ Psia.

Determine the size of Two beds based on $24hrs$ cycle $(12hr$ dehydration and $12hrs$ regeneration$).$ Use $4$A molecular sieve of $\frac{1}{8^{\text{'}\text{'}}}$ beads $($ i$.$e$.,4^{**}8$ mesh$).$ The bed must be heated to $500F$ for regeneration.

$F1$

$20MN$

$T=150$

$P=250$

F$1$

$20MN$

$,$ Compressor hp$,($water removed$)$ W$1$and W$2,$ T$2,$ P$3,$ P$4$

The bed diameter, bed height, the required weight of solid material and the pressure drop through the adsorption bed.

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