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- W24256440 abstract "Publisher Summary Methyldiethanolamine (MDEA) is considered as one of the efficient absorbent which solve the economical problem of absorption process because of its advantages of low vapor pressure and its strong resistance to thermal and chemical degradation and corrosiveness. Indirect reaction of MDEA with CO2 makes the stripping of CO2 by pressure decrease possible and decreases the heat consumption of CO2 stripping by evaporation than those of MEA (monoethanolamine) and DEA (diethanolamine). However, high partial pressure of CO2 and circulation flow rate of absorbent is required to absorb more CO2. This makes packed column for CO2 absorption with MDEA have higher packing height and larger diameter of packing column as compared with those of MEA and DEA. The study presented in this chapter examines various additives to improve the absorption rate of CO2 to MDEA by enhancing the slow reaction rate of MDEA. In this study, absorption rates of CO2 by aqueous mixtures of MDEA and HMDA were measured by the apparatus for gas absorption equilibrium. The experimental results showed that the absorption kinetics of CO2 into the aqueous mixtures of MDEA and HMDA can be regarded as a pseudo first-order reversible reaction. As the concentration of mixed HMDA increased, the apparent absorption rate constants were increased." @default.
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- W24256440 date "2005-01-01" @default.
- W24256440 modified "2023-09-25" @default.
- W24256440 title "Absorption rates of CO2 into aqueous mixtures of MDEA (methyldiethanolamine) and HMDA (hexamethylenediamine)" @default.
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- W24256440 doi "https://doi.org/10.1016/b978-008044704-9/50237-8" @default.
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