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Effect of steam on the performance of Ca-based sorbents in calcium looping processes

Coppola, Antonio et al.

POWDER TECHNOLOGY -LAUSANNE. Volume 316 (2017); pp 578-584

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  • Title:
    Effect of steam on the performance of Ca-based sorbents in calcium looping processes
  • Author: Coppola, Antonio;
    Gais, Eduardo;
    Mancino, Gabriella;
    Montagnaro, Fabio;
    Scala, Fabrizio;
    Salatino, Piero
  • Found In: POWDER TECHNOLOGY -LAUSANNE. Volume 316 (2017); pp 578-584
  • Journal Title: POWDER TECHNOLOGY -LAUSANNE
  • Subjects: Calcium looping--Fluidized bed--Limestone--Steam--CO2 capture--Fragmentation; Dewey: 671.37
  • Rights: Licensed
  • Abstract: Abstract This study addresses the role of water vapour in Calcium Looping (CaL) cycles, and is based on results of an experimental campaign performed in a lab-scale fluidized bed reactor under operating conditions that are representative of a realistic CaL process. Tests have been designed so as to characterize the effect of steam in either the calcination or the carbonation stages, or in both. A reference limestone has been used, and its CO2capture capacity, propensity to fragmentation and morphological and microstructural changes have been investigated upon iterated looping cycles. Results are discussed to highlight the role of steam on the course of calcium looping. Graphical abstract Image 1 Highlights The role of water vapour in calcium looping cycles is addressed. Sorbent reactivity, fragmentation propensity and microstructure are investigated. Exposure to steam during calcination favours the development of accessible porosity. Upon carbonation steam acts as catalyst of CO2diffusion through CaCO3-product layer. Exposure to steam during calcination induces a more resistant particle structure.
  • Identifier: System Number: ETOCvdc_100045301342.0x000001; Journal ISSN: 0032-5910; doi/10.1016/j.powtec.2016.11.062
  • Publication Date: 2017
  • Physical Description: Electronic
  • Shelfmark(s): 6572.500000
  • UIN: ETOCvdc_100045301342.0x000001

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