Regenerative Copper–Alumina H2S Sorbent for Hot Gas Cleaning through Chemical Swing Adsorption
| Autor: | Mehdi Pishahang, Michael McCann, Yngve Larring, Eric van Dijk, Paul Inge Dahl, Egil Bakken, Paul Cobden, Frans Van Berkel |
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| Rok vydání: | 2016 |
| Předmět: |
Sorbent
Chromatography Materials science General Chemical Engineering chemistry.chemical_element Sorption 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 7. Clean energy Copper Industrial and Manufacturing Engineering Isothermal process Flue-gas desulfurization Thermogravimetry Adsorption 020401 chemical engineering Chemical engineering chemistry 0204 chemical engineering 0210 nano-technology Syngas |
| Zdroj: | Industrial & Engineering Chemistry Research. 55:1024-1032 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | This article focuses on desulfurization, of hot syngas from gasification of solid fossil fuels, in the temperature range of 300–500 °C via copper-based adsorbents. The slip of H2S above the developed adsorbent materials for hot cleaning of syngas has been studied together with the regeneration mechanism, using thermodynamic analysis, thermogravimetry, and packed-bed reactor experiments, in order to establish an efficient approach to regenerate the adsorbent. Supported copper on gamma alumina used as H2S adsorbent in this study shows H2S slips lower than 5 ppm in the temperature range of 350–550 °C. The copper-based sorbent shows around 2 wt % sulfur sorption capacity in the temperature range of study. The kinetic evaluation confirms that the sorption kinetics for this sorbent yield sufficient performance for real process operation even at such low temperatures. Aiming at isothermal operation, the chemical swing process is identified as an efficient way to regenerate the adsorbent. In this regeneration pro... |
| Databáze: | OpenAIRE |
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