Enhancements in mass transfer for carbon capture solvents part II: Micron-sized solid particles
| Autor: | Kun Liu, Guojie Qi, Cameron A. Lippert, Kunlei Liu, Aaron Fegenbush, Leland R. Widger, David S. Mannel, Jonathan Bryant |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Diffusion Kinetics 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Pollution Industrial and Manufacturing Engineering Solvent Piperazine chemistry.chemical_compound General Energy 020401 chemical engineering Chemical engineering Mass transfer medicine Organic chemistry Particle Amine gas treating 0204 chemical engineering 0105 earth and related environmental sciences Activated carbon medicine.drug |
| Zdroj: | International Journal of Greenhouse Gas Control. 61:138-145 |
| ISSN: | 1750-5836 |
| DOI: | 10.1016/j.ijggc.2017.03.027 |
| Popis: | The mass transfer of CO 2 into amine-based carbon capture solvents was improved with the addition of heterogeneous micron- and nano-sized particle additives. Enhancement in CO 2 removal rate was determined in a stirred reactor with a flat steady gas-liquid interface and in a small packed-bed absorption column. The screening of several particle types in the stirred reactor indicated that carbon particles are best suited to enhance the rate of CO 2 diffusion in 30 wt.% monoethanolamine (MEA), and tests in the small packed-bed absorption column showed improved CO 2 mass transfer in three solvents, MEA, piperazine (PZ), and hexanediamine (HDA), upon addition of nano-sized activated carbon particles. The enhancement of CO 2 capture efficiency and K G increases with increasing solvent kinetics, in order of methyldiethanolamine (MDEA) 2 capture unit, in both MEA and the thermally stable advanced amine blend: 1-amino-2-propanol (A2P)/2-amino-2-methyl-1-propanol (AMP). The combined system translated to an overall 26% reduction in energy penalty for CO 2 capture on the CAER Bench-scale unit. |
| Databáze: | OpenAIRE |
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