Development of petrodiesel fuel for the heptane-dodecane system based on the vapor liquid equilibria phenomena

Abstract

The objective of this project is to study the development of petrodiesel fuel for the system heptane-dodecane based on the phenomena of vapor liquid equilibria. Therefore, this project mainly focuses on the feasibility studies of heptane-dodecane mixture from the different mole fraction. Normal stirring extraction method under atmosphere pressure was used to extraction the heptane-dodecane mixture from the different mole fraction of the mixture for vapor-liquid equilibrium diagram development. Besides that, MATLAB program was selected as computer program in simulation work. In the MATLAB program, the Peng-Robinson equation of state was inserted to develop the theoretical vapor-liquid equilibrium diagram for the comparison of the experimental vapor-liquid equilibrium diagram. From the comparison, both of the vapor-liquid equilibrium diagrams were slightly different so the results for theoretical and experimental are in close agreement. Lastly, activity coefficient (γ) calculation via UNIFAC Model to show the activity coefficient for different mole fraction of heptane and dodecane mixture at various temperatures.