Effect of Magnesite as bed material in a 100kWth steam-oxygen blown circulating fluidized-bed biomass gasifier on gas composition and tar formation (Record no. 170801)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03660nab a2200205 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2009 xxu |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Siedlecki, M. |
| 9 (RLIN) | 42311 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Nieuwstraten, R. |
| 9 (RLIN) | 42312 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Simeone, E. |
| 9 (RLIN) | 42313 |
| 245 00 - TITULO | |
| Título | Effect of Magnesite as bed material in a 100kWth steam-oxygen blown circulating fluidized-bed biomass gasifier on gas composition and tar formation |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Fecha de publicación, distribución, etc. | nov./dic. 2009 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 08/06/2010 ; 08/06/2010 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 11 p. ; 5643-5654 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Transcripción del resumen del autor. Because of the fibrous nature of woody and herbaceous biomass and the widely distributed appearance of the feedstock with respect to its size, the circulating fluidized bed (CFB) is a very suitable type of reactor for thermal conversion of this potentially renewable and sustainable energy source. Of the thermal conversion processes, combustion and gasification are the most well-known. The advantage of gasification above combustion is that it produces a secondary gaseous energy carrier (i.e., product gas or syngas) from solid biomass. This secondary energy carrier can subsequently be upgraded to, for example, hydrogen-rich fuel gas for fuel cells, converted to liquid transportation fuels [such as Fisher-Tropsch (FT) diesel or dimethyl ether (DME)], or used for synthesis of other chemicals. During operation, the CFB internally recirculates a certain amount of inert material, also referred to as "bed material" This bed material accumulates a part of the energy released during (partial) combustion of biomass and distributes it along the reactor, ensuring a nearly constant temperature throughout the bed. A variety of bulk solids can be used as bed material, with quartz sand being the mostly well-known. The drawback of quartz sand and other bed materials containing a significant amount of silica is that they are prone to agglomerate formation when herbaceous biomass with high alkali and chlorine content in the ash is being used as fuel. These agglomerates can cause a blockage inside the reactor and, therefore, unscheduled maintenance interruptions in the operation. To overcome this problem, alternative bed materials have been proposed, with one of them being magnesite. Because of its low silica content (<4%wt), it proved to be a suitable bed material for continuous pilot-plant operation, even with high-alkaline biomass fuels. During recent experiments conducted using a 100 kWth CFB test rig at Delft University of Technology, the influence of magnesite on the composition of the gas produced during steam-oxygen blown gasification of biomass was observed and investigated. Magnesite showed activity in promoting the water-gas shift reaction, (steam) reforming of methane and C2 hydrocarbons toward their equilibrium, and reducing the tar [here, being toluene, xylenes, polycyclic aromatic hydrocarbons (PAHs), and phenolics] concentration to ca. 6.7 g/mn,wnf3 compared to ca. 9 g/mn,wnf3 measured during a base-case experiment with quartz sand as the bed material. The concentration of PAHs and phenolics was reduced even to 1.9 g/mn,wnf3, which is below 2 g/mn3, being considered as an important limit for many downstream applications (Aznar, M. P., Caballero, M. A., Gil, J., Martin, J. A. and Corella, J. Ind. Eng. Chem. Res. 1998, 37, 2668-2680). This paper presents the results of the experiments and research work carried out to investigate the influence of magnesite as bed material on the composition of the product gas and tar formation. |
| 581 ## - ESTADO DE COLECCIÓN | |
| Estado de colección | 6 |
| 773 0# - CORRECCIÓN | |
| Título | Energy & fuels |
| Partes relacionadas | 23 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| Fuente de clasificación | Dewey Decimal Classification |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 05/03/2026 | 200045655 | 200045655 | 05/03/2026 | Artículo de Revista |
