Read this K-value off the chart (approximately 21.3). Note where the line crosses the methane axis.(a) What is the highest temperature at which the flash drum can operate and still have vapor and. (1) A mixture that is 20 mol propane, 35 mol n-butane, and 45 mol n-hexane is fed into a flash drum operating at 400 kPa. (b) If the flash drum operates at 50☌ and 200 kPa. Connect the points with a straight line. Use the DePriester chart for equilibrium.On the right-hand vertical axis, locate and mark the point containing the temperature 60☏.On the left-hand vertical axis, locate and mark the point containing the pressure 100 psia.Example įor example, to find the K value of methane at 100 psia and 60 ☏. Many DePriester charts have been printed for simple hydrocarbons. "K" values, representing the tendency of a given chemical species to partition itself preferentially between liquid and vapor phases, are plotted in between. These nomograms have two vertical coordinates, one for pressure, and another for temperature. DePriester in an article in Chemical Engineering Progress in 1953. ( December 2018)ĭePriester Charts provide an efficient method to find the vapor-liquid equilibrium ratios for different substances at different conditions of pressure and temperature. Please introduce links to this page from related articles try the Find link tool for suggestions. This article is an orphan, as no other articles link to it.
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