A flexible and robust model for low temperature catalytic desorption of CO 2 from CO 2 -loaded amines over solid acid catalysts
| Autor: | Wayuta Srisang, Priscilla Anima Osei, Raphael Idem, Ananda Akachuku, Benjamin Decardi-Nelson, Fatima Pouryousefi |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Chemistry Applied Mathematics General Chemical Engineering Industrial catalysts Analytical chemistry 02 engineering and technology General Chemistry Electrolyte 021001 nanoscience & nanotechnology 7. Clean energy Industrial and Manufacturing Engineering Catalysis Pilot plant 020401 chemical engineering Scientific method Mass transfer Desorption 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Chemical Engineering Science. 170:518-529 |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2016.12.068 |
| Popis: | A numerical model for catalyst-aided carbon dioxide (CO2) desorption from CO2-loaded aqueous amines solution has been developed. The model includes a hot water-heater and considers phase separation at the top of the desorption column. The model was validated with experimental data obtained from an integrated CO2 capture pilot plant which used 5 M monoethanolamine (MEA) solution with two industrial catalysts, namely, HZSM-5 and γ-Al2O3. The model considers the presence of electrolytes and multi-component mass transfer as well as both the physical and chemical contribution of the catalyst in aiding the process. The data obtained from model simulation were in good agreement with the experimental data in terms of CO2 production rates with an absolute average deviation of approximately ±8.9%. The simulation slightly over-predicted the CO2 production rate at the low temperature regime (75 °C) and under-predicted the CO2 production rate at the high temperature regime (95 °C). The developed model provides a range of capabilities for further studies of the catalytic CO2 desorption process. |
| Databáze: | OpenAIRE |
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