English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181418
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

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

Improving the efficiency of Chemical Looping Combustion with coal by using ring-type internals in the fuel reactor

AuthorsPérez-Vega, Raúl; Abad Secades, Alberto ; Bueno, José A.; García Labiano, Francisco ; Gayán Sanz, Pilar ; Diego Poza, Luis F. de ; Adánez Elorza, Juan
KeywordsCO2 capture
Chemical Looping Combustion
Coal
Ring-type internals
Issue Date3-Apr-2019
PublisherElsevier
CitationFuel 250: 8-16 (2019)
AbstractChemical Looping Combustion (CLC) with solid fuels has been widely developed by using two interconnected fluidized beds, the fuel reactor and the air reactor, with an oxygen carrier continuously circulating between them. Experience gained in this process shows that high CO2 capture values can be reached. However, complete combustion of the fuel is not achieved, with some H2, CO and CH4 as the main unconverted compounds in the combustion products from the fuel reactor. It is believed that the combustion efficiency can be increased by improving the gas-solid contact in the fuel reactor. In this work, the solids distribution in the fuel reactor was modified by using ring-type internals with the objective of enhancing the gas-solid contact. Two experimental campaigns were carried out in a 50 kWth CLC unit burning a bituminous coal with ilmenite particles in the temperature interval of 900–1000 °C. The first campaign was conducted with the original riser of the fuel reactor, which was characterized by a smooth section from bottom to top. For the second campaign, three ring-type internals were implemented in the riser in order to modify the solids distribution in the fuel reactor. The presence of the internals had a beneficial effect on the coal combustion. The major benefit was an improved oxidation of volatile matter in the form of CH4 and the full conversion of H2. As a result, the total oxygen demand decreased by 20%, from 12.2% to 9.8%, with the implementation of the internals.
Description7 Figuras.- 5 Tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.fuel.2019.03.137
URIhttp://hdl.handle.net/10261/181418
DOI10.1016/j.fuel.2019.03.137
ISSN0016-2361
Appears in Collections:(ICB) Artículos
Files in This Item:
File Description SizeFormat 
2019_Perez-Vega et al_Fuel.pdf Embargoed until April 3, 2021Artículo principal675,07 kBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 


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