In a reboiled absorber, operating as a deethanizer at 400 psia to separate a light hydrocarbon feed,

Question:

In a reboiled absorber, operating as a deethanizer at 400 psia to separate a light hydrocarbon feed, conditions at the bottom tray are:

Liquid Phase

Molar flow = 1, \(366 \mathrm{lbmol} / \mathrm{hr}\)\(\mathrm{MW}=91.7\)

Density \(=36.2 \mathrm{lb} / \mathrm{ft}^{3}\)

Surface tension \(=10.6\) dyne \(/ \mathrm{cm}\)

Vapor Phase

Molar flow \(=735.2 \mathrm{lbmol} / \mathrm{hr}\)\(\mathrm{MW}=41.2\)

Density \(=2.83 \mathrm{lb} / \mathrm{ft}^{3}\)

If sieve trays are used with a hole area of \(10 \%\) and a 24-in. tray spacing, determine the tower diameter. Assume \(80 \%\) of flooding and a foaming factor of 0.75 .

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