Publication Type Journal Article
Title Modeling the deactivation of CaO-based sorbents during multiple Ca-looping cycles for CO2 post-combustion capture
Authors Miguel Abreu Paula Alexandra Lourenço Teixeira Rui M. Filipe Luis Domingues Carla I C Pinheiro Henrique A. Matos
Groups CATHPRO
Journal COMPUTERS \& CHEMICAL ENGINEERING
Year 2020
Month March
Volume 134
Number
Pages
Abstract A novel model is presented for the estimation of natural CaO-based sorbents carbonation reactivity decay during Calcium Looping carbonation-calcination cycles. The model consists of a cyclic framework of two sub-models, the Overlapping Grain Model and the novel proposed modified Rate Theory for the Pore Size Distribution model. The model was implemented in gPROMS ModelBuilder (R) and parameter estimation was used for model validation using experimental data from three CaO-based sorbent precursors. The carbonation profile for the three sorbents was simulated with average deviations under 5\%. The calcination sub-model predicted the evolution of total porous volume and total surface area for the calcination and sintering of dolomite, with an error of 3\%. The cyclic framework successfully predicted the carbonation behavior of dolomite for 20 carbonation-calcination cycles. The model can be used for other CaO-based sorbents and the flexible modular structure allows the integration of other modules or approaches. (C) 2019 Elsevier Ltd. All rights reserved.
DOI http://dx.doi.org/10.1016/j.compchemeng.2019.106679
ISBN
Publisher
Book Title
ISSN 0098-1354
EISSN 1873-4375
Conference Name
Bibtex ID ISI:000517756500025
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