Simulation of the calcination of a core-in-shell CuO/CaCO3 particle for Ca-Cu chemical looping

Qin, Changlei, Manovic, Vasilije, Ran, Jingyu and Feng, Bo (2016) Simulation of the calcination of a core-in-shell CuO/CaCO3 particle for Ca-Cu chemical looping. Fuel, 181 522-530. doi:10.1016/j.fuel.2016.05.035


Author Qin, Changlei
Manovic, Vasilije
Ran, Jingyu
Feng, Bo
Title Simulation of the calcination of a core-in-shell CuO/CaCO3 particle for Ca-Cu chemical looping
Formatted title
Simulation of the calcination of a core-in-shell CuO/CaCO3 particle for Ca-Cu chemical looping
Journal name Fuel   Check publisher's open access policy
ISSN 0016-2361
1873-7153
Publication date 2016-10-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.fuel.2016.05.035
Open Access Status Not Open Access
Volume 181
Start page 522
End page 530
Total pages 9
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2017
Language eng
Formatted abstract
The internal heat balance through heat generation due to CuO reduction and its consumption by CaCO3 decomposition makes calcination a critical step in a novel Ca-Cu chemical looping process (CaL-CLC). Thus, the calcination behaviour of composite Ca/Cu particles needs to be well understood, especially taking into account that mismatching of heat generation and consumption in the particles can lead to local superheating, agglomeration and loss of activity due to enhanced sintering. In this work, a composite particle model was developed to study the calcination behaviour within a spherical core-in-shell type of particle containing grains of CuO and CaCO3. Simulation results showed that ambient temperature, shell porosity, particle size, and CaCO3 grain size significantly affected the CuO and CaCO3 reaction processes, while the impact of initial particle temperature and CuO grain size can be ignored in the range of parameters considered in the study. By comparison of different types of particles, it was concluded that the core-in-shell pattern was more advantageous if such particles are being applied in CaL-CLC cycles due to better matching in reaction kinetics resulting in more stable and uniform particle temperature distribution during the calcination stage.
Keyword Ca-Cu chemical looping
CO2 capture
Composite particle model
Core-in-shell particle
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
HERDC Pre-Audit
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Tue, 24 May 2016, 00:12:30 EST by System User on behalf of Learning and Research Services (UQ Library)