Application of BaO-Based Sulfur Sorbent for in Situ Desulfurization of Biomass-Derived Syngas
| Autor: | Viktoria Maitz, Christoph Hochenauer, Christian Zuber, Moritz Husmann, Thomas Kienberger, Michael Müller |
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| Rok vydání: | 2016 |
| Předmět: |
Sorbent
Wood gas generator Chemistry 020209 energy General Chemical Engineering Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Sorption 02 engineering and technology engineering.material Sulfur Flue-gas desulfurization Fuel Technology Volume (thermodynamics) 0202 electrical engineering electronic engineering information engineering engineering Lime Syngas |
| Zdroj: | Energy & Fuels. 30:6458-6466 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b00957 |
| Popis: | A novel BaO-based sorbent is tested for in situ application as desulfurization agent in an allothermal biomass gasification process. BaO is stabilized against the formation of carbonate and thus theoretically allows desulfurization down to a few parts per million (volume) (ppmv) H2S even for high-steam and high-temperature conditions. In real process application, sintering of the sorbent occurred and had to be prevented by the addition of lime as separating agent. Additionally, a kinetic limitation of the desulfurization with BaO was shown for the in-bed sorption of sulfur. An increase of gasification temperature from 760 to 810 °C significantly improved the desulfurization performance. The observed behavior is in contrast to that of previously tested CaO-based in situ sorbents. CaO-based in situ desulfurization is limited to values of about 500 ppmv H2S for the conditions prevailing in the gasifier. With the novel BaO-based sorbent, a desulfurization from 85 to 35 ppmv residual H2S is shown upon addition... |
| Databáze: | OpenAIRE |
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