Experimental and Theoretical Investigation of Simultaneous Absorption of H2S and CO2 from gaseous mixtures by MEA

Experimental and Theoretical Investigation of Simultaneous Absorption of H2S and CO2 from gaseous mixtures by MEA

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Part of #Experimental and Theoretical Investigation of Simultaneous Absorption of H2S and CO2 from gaseous mixtures by MEA# :

Publishing year : 2004

Conference : Ninth National Congress of Chemical Engineering of Iran

Number of pages : 13

Abstract: Absorption of H2S from a gaseous mixture containing H2S and CO2 by amine solutions is one of the promising techniques for preventing serious environmental problems that could be caused by this harmful compound. Usually these gases contain some significant amounts of CO2 that compete with H2S in being absorbed by amine solutions. So the problem of selective absorption of H2S by the amine solution could be very interesting from the economic and operational points of view. In this research, a mathematical model is proposed for simultaneous absorption of H2S and CO2 with special emphasis on selectivity of absorption. The effects of different parameters such as pressure, amine concentration, L / G and packing size are studied on the selectivity of absorption. The effect of these parameters is discussed according to the different nature of
mechanism of H2S and CO2 absorption in amine, theoretically and experimentally. A pilot scaled plant is constructed to measure the rate of absorption of H2S and CO2 in an amine solution at different operating conditions. The results obtained by the proposed mathematical model are compared with experimental data. Once the validity of the model is verified, it could be used for design and construction of industrial plants.