چكيده به لاتين
Today increasing in the carbon dioxide content of the atmosphere leads to sever environmental problems like global warming and its hazards. Moreover, presence of the carbon dioxide in the natural gas can caused many operating problems. Currently, one of the commonly-used approaches of the carbon dioxide absorption is based on using the Amine solutions. Recently, various Amine solutions are introduced so that their specifications like efficiency, chemical stability, durability, cost and environmental impacts are modified. For instance, Morpholine is a secondary Amine which can be transformed to Carbamate which has a significant rate of carbon dioxide absorption. In this work, Morpholine is added to the MDEA and AMP Amines to form the MDEA+MOR and AMP+MOR solutions. Then, the carbon dioxide solubility in the resulted solutions is examined. The experiments are performed at temperatures of 303, 313, and 323 K and a pressure range of 10 to 200 kPa.The molar concentration of solutions is 3M and the molar ratios of Morpholine to activator amine are set to 0.1, 0.25 and 0.5. The solubility of CO2 in mixed amines is correlated using the Deshmukh-Mather model. The activity coefficient of components in the liquid phase was obtained using the developed Debye-Huckel theory. In each mixed amines system, six interaction parameters are adjusted using the experimental data of CO2 loading in mixed amines aqueous solutions. The percentage of average absolute deviation in term of calculated CO2 loadings and experimental values are 3.97 and 1.60 for MDEA+MOR and AMP+MOR, respectively.
