English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11449
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:


Heat requirements in a calciner of CaCO3 integrated in a CO2 capture system using CaO

AuthorsRodríguez Gómez, Nuria ; Alonso Carreño, Mónica ; Grasa Adiego, Gemma ; Abanades García, Juan Carlos
KeywordsCO2 capture
Coal combustion
Issue DateMay-2008
CitationChemical Engineering Journal 138(1-3): 148-154 (2008)
AbstractSeveral systems for CO2 capture using CaO as regenerable sorbent are under development. In addition to a carbonation step, they all need a regeneration step (calcination of CaCO3) to produce a concentrated stream of CO2. Different options for calcination may be possible, but they all share common operating windows that appear when the mass and heat balances in the system are solved incorporating equilibrium data, sorbent performance information, and fuel composition (sulphur and ash content). These relatively narrow operating windows are calculated and discussed in this work. Due to sorbent performance limitations, low carbonation levels of the sorbent in the carbonator are expected and the heat demand in the calciner is dominated by the heating of inert solids flowing in the carbonation chemical loop. High make up flows of fresh limestone reduce this effect by increasing the average reactivity of the sorbent, but they also increase the heat demand in the calciner to calcine the fresh feed of limestone. Hence, an optimum level of sorbent activity appears under different operating conditions, processes and fuel characteristic, and these are discussed in this work.
Description7 pages, 8 figures, 1 table.-- Available online on Jun 12, 2007.
Publisher version (URL)http://dx.doi.org/10.1016/j.cej.2007.06.005
Appears in Collections:(INCAR) Artículos
(ICB) Artículos
Files in This Item:
File Description SizeFormat 
Heat_requirements_CaCO3_2008_CEJ.pdf372,9 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.