Kinetic Study of Carbon Dioxide Absorption into Glycine Promoted Methyl di Ethanolamine (Mdea)

Carbon dioxide is commonly seen as one of the major contributors to climate change, that is why removing carbon dioxide from the chemical industry field is very important things to mitigate the problem of global warming, so we need to reduce CO2 emissions by using the efficient method .The chemical absorption using tertiary alkanolamines solution (such as MDEA) is one of most important method which have been proposed and studied for the removal of carbon dioxide, because the MDEA solvent has low cost, low corrosive tendencies, high stability, low viscosity, low tendency to foam, and low flammability, however it has low reaction rate therefore glycine promoter was added to the conventional solvents to increase the rate of the reaction, because glycine is a primary amine compound which is reactive, moreover, glycine has resistance to high temperatures so it will not easy to degradable and suitable for application in industry. The main purpose of this study is to provide reaction kinetics data of CO2 absorption into glycine promoted methyl di ethanolamine (MDEA) by using laboratory scale wetted wall column equipment at the atmospheric pressure by varying temperature from 303.15 to 328.15 and glycine concentration from 1% to 3% and the carbon dioxide absorption rate is measured by titration of liquid effluent Based on the result of this study, we observed that by increasing temperature and concentration of glycine ,the absorption rate of carbon dioxide in MDEA solution will increase, In addition the reaction rate constant was affected by the temperature and the concentration of promoter. The correlation of reaction rate constant k glycine is: k glycine =8.113E+18exp (-5137.6/T) with activation energy for glycine promoter is 42.714 kJ/kmol.