Retos químicos para los materiales estructurales en oxicombustión de carbón y biomasa
[EN] Oxy-firing of solid fuels is one of the most relevant technological alternatives aiming at the CO2 capture in large-scale power plants. If oxy-firing is carried out in a fluidized bed reactor, the possibilities for application are extended to low-rank coals, difficult wastes, or biomass. The ox...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/95180 |
| Acesso em linha: | http://hdl.handle.net/10261/95180 |
| Access Level: | acceso abierto |
| Palavra-chave: | FBC Oxicombustión Oxy-firing Biomass Biomasa |
| Resumo: | [EN] Oxy-firing of solid fuels is one of the most relevant technological alternatives aiming at the CO2 capture in large-scale power plants. If oxy-firing is carried out in a fluidized bed reactor, the possibilities for application are extended to low-rank coals, difficult wastes, or biomass. The oxy-co-combustion of coal and biomass in circulating fluidized bed (CFB) reactors would result in a negative balance for the CO2 emissions. Several on-going national and international initiatives are focused in the research of oxyfuel- related issues, covering lab-scale plants, pilot plants and semicommercial units for pulverized fuel combustion. In particular, the field of ash fouling and corrosion under oxy-cofiring in fluidized beds remains almost completely open. Although there are available works in relation to the control of deposition rates in fluidized bed units, especially when biomass is the fuel, they have been developed under conventional combustion with air but not for the particular conditions occurring with CFB oxy-firing. The aim of the present work is to introduce an overview about the chemical challenges that oxycofiring implies over metal exchanger surfaces as well as over low-cement ceramic protection of combustor sidewalls, for a future commercial application of the technology. |
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