Air-steam gasification of sewage sludge in a bubbling bed reactor: Effect of alumina as a primary catalyst

Andrés Almeida, Juan Manuel de; Narros Sierra, Adolfo y Rodríguez Hurtado, María Encarnación (2011). Air-steam gasification of sewage sludge in a bubbling bed reactor: Effect of alumina as a primary catalyst. "Fuel Processing Technology", v. 92 (n. 3); pp. 433-440. ISSN 0378-3820. https://doi.org/10.1016/j.fuproc.2010.10.006.

Descripción

Título: Air-steam gasification of sewage sludge in a bubbling bed reactor: Effect of alumina as a primary catalyst
Autor/es:
  • Andrés Almeida, Juan Manuel de
  • Narros Sierra, Adolfo
  • Rodríguez Hurtado, María Encarnación
Tipo de Documento: Artículo
Título de Revista/Publicación: Fuel Processing Technology
Fecha: 2011
Volumen: 92
Materias:
Palabras Clave Informales: Sewage sludge gasification; Primary catalyst; Bubbling fluidised bed; Gasifying agents
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

Numerous references can be found in scientific literature regarding biomass gasification. However, there are few works related to sludge gasification. A study of sewage sludge gasification process in a bubbling fluidised bed gasifier on a laboratory scale is here reported. The aim was to find the optimum conditions for reducing the production of tars and gain more information on the influx of different operating variables in the products resulting from the gasification of this waste. The variables studied were the equivalence ratio (ER), the steam-biomass ratio (SB) and temperature. Specifically, the ER was varied from 0.2 to 0.4, the SB from 0 to 1 and the temperature from 750 °C (1023 K) to 850 °C (1123 K). Although it was observed that tar production could be considerably reduced (up to 72%) by optimising the gasification conditions, the effect of using alumina (aluminium oxide, of proven efficacy in destroying the tar produced in biomass gasification) as primary catalyst in air and air-steam mixture tests was also verified. The results show that by adding small quantities of alumina to the bed (10% by weight of fed sludge) considerable reductions in tar production can be obtained (up to 42%) improving, at the same time, the lower heating value (LHV) of the gas and carbon conversion.

Más información

ID de Registro: 11620
Identificador DC: http://oa.upm.es/11620/
Identificador OAI: oai:oa.upm.es:11620
Identificador DOI: 10.1016/j.fuproc.2010.10.006
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0378382010003541
Depositado por: Memoria Investigacion
Depositado el: 11 Jul 2012 07:43
Ultima Modificación: 01 Sep 2017 17:18
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