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Absorption Rate of Carbon Dioxide into Blended Ammonia Solution with Amine Additives in a Stirred Cell Reactor  

Park, HoSeok (Department of Chemical and Biomolecular Engineering, Kaist)
You, Jong Kyun (Department of Chemical and Biomolecular Engineering, Kaist)
Hong, Won Hi (Department of Chemical and Biomolecular Engineering, Kaist)
Kim, Jong Nam (Chemical Research Center, Korea Institute Energy Research)
Publication Information
Korean Chemical Engineering Research / v.47, no.2, 2009 , pp. 185-189 More about this Journal
Abstract
Absorption rate of carbon dioxide into aqueous ammonia absorbent(10 wt%) was measured in the temperature range from 293 K to 337 K using a stirred-cell reactor. The reaction rate constant was correlated with the Arrehnius equation and the activation energy was 50.42 kJ/mol. $CO_2$ absorption rate into modified ammonia absorbent was also investigated. For the modified ammonia absorbent, 1 wt% sterically hindered amines of 2-amino-2-methyl-1-propanol(AMP), 2-amino-2-methyl-1,3-propandiol(AMPD) and 2-amino-2-ethyl-1,3-propandiol(AEPD) were used as additives. The $CO_2$ absorption rate increased by adding 1 wt% of the amine additive, in the case of AMP additive, the absorption rate enhanced by about 53%.
Keywords
$CO_2$ Removal; Absorption; Ammonia; Kinetics; Blending;
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