Comparison of commercial and new adsorbent materials for pre-combustion CO2 capture by pressure swing adsorption
| Autor: | Richard Blom, Dorian Marx, Nathalie Casas, Johanna Schell, Marco Mazzotti |
|---|---|
| Přispěvatelé: | Dixon, Timothy, Yamaji, Kenji |
| Rok vydání: | 2013 |
| Předmět: |
USO-2-Ni
Langmuir 02 engineering and technology MCM-41 UiO-67/MCM-41 Hybrid Excess adsorption isotherm Cyclic working capacity PSA 010402 general chemistry Vacuum swing adsorption Combustion 01 natural sciences 7. Clean energy Water-gas shift reaction cyclic working capacity Adsorption Energy(all) Integrated gasification combined cycle Coal Waste management business.industry Chemistry excess adsorption isotherm 021001 nanoscience & nanotechnology 0104 chemical sciences Pressure swing adsorption Chemical engineering 13. Climate action 0210 nano-technology business |
| Zdroj: | Energy Procedia, 37 GHGT-11 Proceedings of the 11th International Conference on Greenhouse Gas Control Technologies |
| ISSN: | 1876-6102 |
| DOI: | 10.1016/j.egypro.2013.05.098 |
| Popis: | The IGCC technology (Integrated Gasification Combined Cycle) with pre-combustion CO 2 capture is a promising approach for near-zero CO 2 emission power plants to be realized in the near future. A key challenge within this technology is the separation of the CO 2 /H 2 gas mixture resulting from the water gas shift reaction that follows the gasification of coal. For the CO 2 stream a purity of about 95% is required; additionally a CO 2 capture rate of 90% is desired, which implies that both streams, H 2 and CO 2 , are required at rather high purity (∼95%). In contrast to post- combustion capture from power plants, where a large gas stream at low pressure and low CO 2 content has to be treated, in pre-combustion capture a gas mixture at up to 40 bar has to be separated; therefore an adsorption based process, such as pressure swing adsorption (PSA), constitutes a promising method for CO 2 removal from H 2 . In this work, new materials, namely USO-2-Ni MOF, UiO-67/MCM-41 Hybrid and MCM-41, are characterized in terms of equilibrium adsorption isotherms. Excess adsorption isotherms of CO 2 and H 2 on these materials are measured at different temperatures (25 °C 140 °C) and in a wide pressure range (up to 150 bar). The experimental data are then described with a suitable isotherm model, in our case Langmuir, Sips and Quadratic. In addition, the cyclic working capacity of CO 2 on each material is computed as a further assessment of the suitability of these materials for pre-combustion capture. |
| Databáze: | OpenAIRE |
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