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The following mixture of hydrocarbons is obtained as one stream in a peroleum refinery on a...

The following mixture of hydrocarbons is obtained as one stream in a peroleum refinery on a mole basis: 5% ethane, 10% propane, 40% n-butane, 45% isobutane. Assuming the shortcut K-ratio model.

1) compute the bubble point of the mixture at 5 bar.

2) compute the dew point of the mixture at 5 bar.

3) find the amounts and compositions of the vapor and liquid phases that would result if this mixture were to be isothermally flash vaporized at 30 degrees celcius from a high pressure to 5 bar.

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Answer #1

a) By shot-cut vapor pressure eqn Find T when 5% i5% For given liquid composition, at P 0.5 MPa Bubble point temperature 293.

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