Desorption of CO2 from MDEA and Activated MDEA Solutions

CO2 stripping from monoethanolamine using a membrane contactor

“…C CO 2 ,i is the CO 2 equilibrium concentration with the gas phase at interfacial of liquid phase. D CO 2 is the CO 2 The equilibrium constant (K) can be calculated by using the following equation [18]: 15) where C CO 2 ,e is the bulk equilibrium concentration of dissolved free CO 2 in the liquid phase, and˛is the CO 2 loading.…”

“…Usually, the stripper unit operates at slightly above normal pressure and high temperature. A few studies reported CO 2 desorption based on conventional columns [1,2].…”

Kinetics of carbon dioxide absorption and desorption in aqueous alkanolamine solutions using a novel hemispherical contactor—I. Experimental apparatus and mathematical modeling

“…Whereas, in designing and simulating real amine processes, data under stripping conditions are equally important. Furthermore, whatever little work has thus far been done on desorption or stripping (Bosch et al, 1990a,b;Glasscock et al, 1991;Xu et al, 1995) from chemical solvent has been done in isolation and there has never been a major attempt to investigate if the data collected under absorber conditions can be utilized to predict desorption rates. Finally and most importantly, the experimental data on reaction kinetics have been mostly analyzed assuming simplified pseudo-firstorder kinetics and pseudo-first-order or corresponding secondorder rate coefficients have been reported.…”

CO2 Absorption Rate and Solubility in Monoethanolamine/Piperazine/Water

“…Typical absorber tray efficiency is less than 20%. Piperazine (PZ) has been studied as a promoter for methyldiethanolamine (MDEA) by Xu et al (26,27,28) and Kaganoi (13). Bishnoi (5) has determined that the rate constant of PZ with CO2 is one order of magnitude higher than that of MEA with CO2.…”