#DEPRIESTER CHART EQUATION HOW TO#

If we specify the Then remaining variables must be found from:EquationsA) mole fraction summations B) K-Value relationships Isothermal Flash Equationsvariables F, Tv, Pv, TF, PF, Zi Isothermal Flash VariablesLiquid FeedWe showed in the last lecture that there are C+5 degrees of freedom.If we specify F, zi, TF, PF we have specified (C+3) variables and we can specify two additional variables.Vapor outFlash DrumF, zi, TF, PF, hFL, xi, TL, PL, hLLiquid outV, yi, TV, PV, hvQCommon Specifications:TV,PV Isothermal FlashV/F=0, PL Bubble-Point TemperatureV/F=1, PV Dew-Point TemperatureV/F=0, TL Bubble-Point PressureV/F=1, TV Dew-Point PressureQ=0, PV Adiabatic FlashQ, PV Non adiabatic flashV/F, PV Percent Vaporization FlashFor this system there are 3C+10 variables:F, V, L, TF, PF, TV, PV, TL, PL, Q, C Vapor outFlash DrumF, zi, TF, PF, hFFor each stream:n: molar flow rate: F, L, V zi: composition variables: x,y,zT: temperatureP: pressureh: enthalpyQ: heat transferL, xi, TL, PL, hLLiquid outV, yi, TV, PV, hvQ Isothermal FlashConfigurationLiquid FeedConsider the following operation which produces a liquid-vapor equilibrium from a liquid feed:

#DEPRIESTER CHART EQUATION HOW TO#

Lecture 5: Isothermal Flash CalculationsIn the last lecture we:Дescribed energy and entropy balances in flowing systems Defined availability and lost work Derive a Gibbs Phase Rule for flowing systems Described system specification Showed how DePriester charts are used to tabulate K-value data for hydrocarbon systemsIn this lecture well:Дescribe an isothermal flash separation Derive the Rachford-Rice equation Show how to use Newtons method to find the roots of the RR equation Use the Rachford-Rice procedure, including Newtons method and DePriester equilibrium data to solve a hydrocarbon isothermal flash problem.

Depriester chart equation