چكيده به لاتين
Abstract:
A wide range of laboratory instruments and different methods for the study of vapor-liquid equilibrium is used which can generally be classified into two categories. The first group is called analytical methods which are based on the composition of the phases in equilibrium and the second one is called synthetic methods which are based on the exact initial composition of the mixture. Absorbing acid gases from natural gas by Amines, is a very common method in the gas industry. Alkanolamines are popular solvents to remove carbon dioxide and hydrogen sulfide from natural gas, due to easily regeneration. In this report, we study the vapor- liquid equilibrium in binary systems Morpholine - Mono Ethanol Amine and Morpholine 2-amino-2-methyl 1-propanol. The experimental data has been measured for vapor- liquid equilibrium in binary alkanolamine systems at four isothermal temperature conditions. 135, 145, 155 and 160 ° C for Morpholine- Mono Ethanol Amine system And 140, 148, 155 and 160 ° C for 2-amino-2-methyl-1-propanol- morpholine system. In addition, the vapor- liquid equilibrium data has been calculated by using a suitable thermodynamic model. In this model of Gamma– phi the vapor- liquid equilibrium system has been calculated in mentioned systems by using the Peng Robinson equation of state and NRTL activity coefficient model. Energy parameters of NRTL activity coefficient model is fitted using the flash vaporization calculation. The propose d model with 1.5% AARD is able to calculate the vapor- liquid equilibrium in mentioned alkanolamines systems.
Keywords: vapor – liquid equilibrium, morpholine, mono ethanol amine, 2-amino-2-methyl-1-propanol, the NRTL model
