Abstract
In this article, the rapid decay of the CO2 capture capacity of calcined powders derived from Ca(OH)2 is presented. The observed decay is closely related to the calcination conditions of Ca(OH)2. By increasing calcinaion time, the CO2 capture capacity decreases significantly. At 973 K, the decay can cause a 27.3% of CO2 capture capacity loss by 2.5 min increase of calcination time. A higher calcination temperature will decrease the observed decay. In order to well understand the decay process, the characteristics of calcined powders derived from Ca(OH)2, such as pore structure and basicity, were investigated. During the process of CO2 capture of calcined powders from shorter Ca(OH)2 calcination time, a carbonation reaction and Ca(OH)2 decomposition occur simultaneously. Therefore, the diffusion and transportation of steam from the Ca(OH)2 decomposition helps to prevent the formation of an exterior CaCO3 layer, which can result in more thorough carbonation reactions. Furthermore, a preliminary attempt to overcome the observed decay was also studied.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
