The stream from a gas well consists of 90 mol % methane, 5 mol% ethane, 3 mol% propane, and 2 mol% n-butane. The stream is flashed isothermally vaporised at 233 K and 70 bar. Use De Priester chart to estimate the L/F fraction and liquid and vapor compositions.
The vapor pressure of an solution is directly dependent on the vapor pressure of each chemical component and the mole fraction of the component present in the solution, so vapor consisted of 90 mol% methane, 5 mol% ethane, 3 mol% propane, and 2 mol% n-butane. According to Law established by François-Marie Raoult in 1882.