Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

File Description SizeFormat 
Degradation Study of a Novel Polymorphic Sorbent - Clean.pdfAccepted version589.09 kBAdobe PDFView/Open
Title: Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions
Authors: Clough, PT
Boot-Handford, ME
Zhao, M
Fennell, PS
Item Type: Journal Article
Abstract: Calcium looping is a Carbon Capture and Storage (CCS) technology which has the potential to be applied to both power generation plants and some industrial emission sources. The main problem with the use of calcium oxide-based sorbents is their characteristic decay in carrying capacity. This is caused by sintering and is made worse during multiple cycles of CO2 absorption (carbonation) and release (calcination). This paper provides an investigation into the degradation of a novel type of sorbent that is able to regenerate porosity during the temperature cycling of calcium looping. The porosity regeneration of this sorbent is a result of a dicalcium silicate additive undergoing a reliable phase change (α′ ↔ β), which consequently has a useful volume change associated with it. The sorbent here, has been tested for the first time under reasonably realistic conditions within a TGA for multiple cycles. The results demonstrated that the sorbent displays the characteristic decline in carrying capacity when calcined in the presence of CO2, but not when calcined in the absence of CO2 in the fluidising gas. This paper also presents an improved method to conduct TGA carrying capacity measurements of CO2 sorbents which minimises the over carbonation between cycles.
Issue Date: 12-Sep-2016
Date of Acceptance: 23-Aug-2016
URI: http://hdl.handle.net/10044/1/40808
DOI: http://dx.doi.org/10.1016/j.fuel.2016.08.098
ISSN: 0016-2361
Publisher: Elsevier
Start Page: 708
End Page: 713
Journal / Book Title: Fuel
Volume: 186
Copyright Statement: © 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/K021710/1
EPSRC
Keywords: Energy
0904 Chemical Engineering
0913 Mechanical Engineering
0306 Physical Chemistry (Incl. Structural)
Publication Status: Published
Appears in Collections:Centre for Environmental Policy
Chemical Engineering



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons