Behaviour of dolomite, olivine and alumina as primary catalysts in air-steam gasification of sewage sludge

Andrés Almeida, Juan Manuel de; Narros Sierra, Adolfo y Rodríguez, María Encarnación (2011). Behaviour of dolomite, olivine and alumina as primary catalysts in air-steam gasification of sewage sludge. "Fuel", v. 90 (n. 2); pp. 521-527. ISSN 0016-2361.

Descripción

Título: Behaviour of dolomite, olivine and alumina as primary catalysts in air-steam gasification of sewage sludge
Autor/es:
  • Andrés Almeida, Juan Manuel de
  • Narros Sierra, Adolfo
  • Rodríguez, María Encarnación
Tipo de Documento: Artículo
Título de Revista/Publicación: Fuel
Fecha: 2011
Volumen: 90
Materias:
Palabras Clave Informales: Primary catalyst; Sewage sludge gasification; Bubbling fluidised bed; Tar content
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Química Industrial y del Medio Ambiente
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Sewage sludge gasification assays were performed in an atmospheric fluidised bed reactor using air and air–steam mixtures as the gasifying agents. Dolomite, olivine and alumina are three well known tar removal catalysts used in biomass gasification processing. However, little information is available regarding their performance in sewage sludge gasification. The aim of the current study was to learn about the influence of these three catalysts in the product distribution and tar production during sewage sludge gasification. To this end, a set of assays was performed in which the temperature (750–850 °C), the in-bed catalyst content (0, 10 and 15 wt.%) and the steam–biomass ratio (SB) in the range of 0–1 were varied with a constant equivalence ratio (ER) of 0.3. The results were compared to the results from gasification without a catalyst. We show that dolomite has the highest activity in tar elimination, followed by alumina and olivine. In addition to improving tar removal, the presence of water vapour and the catalysts increased the content of H2 in the gases by nearly 60%.

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Depositado el: 11 Jul 2012 08:01
Ultima Modificación: 20 Abr 2016 19:38
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