English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/211669
logo share SHARE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Use of Chemical-Looping processes for coal combustion with CO2 capture

AuthorsAdánez Elorza, Juan ; Gayán Sanz, Pilar ; Adánez-Rubio, Iñaki; Cuadrat, Ana; Mendiara, Teresa; Abad Secades, Alberto ; García Labiano, Francisco ; Diego Poza, Luis F. de
CO2 capture
Issue Date5-Aug-2013
CitationEnergy Procedia 37: 540-549 (2013)
AbstractChemical-Looping Combustion, CLC, is one of the most promising processes to capture CO2 at a low cost. It is based on the transfer of the oxygen from air to the fuel by using a solid oxygen carrier that circulates between two interconnected fluidized-bed reactors: fuel and air reactors. The CO2 capture is inherent to this process, as the air does not get mixed with the fuel. In this work two options are evaluated in a 1 kWth continuously operated unit for coal fueled Chemical-Looping. The first one is the gasification of coal in the fuel reactor –in-situ Gasification Chemical- Looping Combustion (iG-CLC)–. Ilmenite or a bauxite waste material is used as oxygen carrier. The second one is the combustion of coal in the fuel reactor by using oxygen carriers which release gaseous oxygen –Chemical-Looping with Oxygen Uncoupling (CLOU)–. A Cu-based material is used in this mode. Coals ranging from anthracite to lignite were used. Complete combustion was always reached in CLOU mode, whereas unburnt compounds were present in iG-CLC. Both in iG-CLC and CLOU processes the CO2 capture increased with temperature and decreased with the coal rank. The highest CO2 capture rate was obtained for lignite, being 93% for iG-CLC and 99% for CLOU, even without a carbon separation system. The key aspects for the good performance of iG-CLC and CLOU processes are analyzed through the performance results obtained with different coals
Description5 figures, 3 tables.-- Work presented at the GHGT-11, 11th International Conference on Greenhouse Gas Control Technologies, 18-22 November 2012, Kyoto, Japan.
Publisher version (URL)http://dx.doi.org/10.1016/j.egypro.2013.05.140
Identifiersdoi: 10.1016/j.egypro.2013.05.140
issn: 1876-6102
Appears in Collections:(ICB) Artículos
Files in This Item:
File Description SizeFormat 
Energy Procedia 37 540-549 (2013).pdf174,19 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.