Journal of Industrial and Engineering Chemistry, Vol.18, No.1, 105-110, January, 2012
CO2 absorption capacity using aqueous potassium carbonate with 2-methylpiperazine and piperazine
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Various amines as a promoter have been added to the K2CO3 solution in order to improve the
performance of the CO2 absorption process. Piperazine (PZ) and 2-methylpiperazine (2-MPZ), cyclic diamines were used as promoters in this study. The equilibrium partial pressure of CO2 (P*CO2) and pressure changes were measured at 313, 333 and 353 K condition of flue gas using VLE (vapor.liquid equilibrium) equipment. The results show that 2-MPZ possesses the ability to promote CO2 absorption capacity. The K2CO3/2-MPZ solution had an equilibrium partial pressure of CO2 that was lower than that of the MEA solution at 333 K.
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