 Energy consumption of two-stage system of biomass pyrolysis and bio-oil reforming to recover waste heat from granulated BF slagXin Yao, Yang Liu, Qingbo Yu and Shuhuan Wang Energy, 2023, vol. 273, issue C Abstract: Aiming at the low heat recovery efficiency of granulated BF (blast furnace) slag, the concept of a two-stage system recovery waste heat from granulated BF slag was proposed. The principle of the two-stage system was low temperature biomass pyrolysis at 500 °C–700 °C and high temperature bio-oil reforming at 700 °C–900 °C. The feasibility of the two-stage system was verified from aspects of mass balance, energy balance and exergy efficiency. The results implied that the two-stage system required fewer materials and obtained higher exergy efficiency than the traditional physical methods. The maximal energy efficiency of syngas obtained from biomass via the two-stage system was higher than 1 in the industrial application. The exergy efficiency of the two-stage system was almost unchanged under different temperatures and CO2 concentrations of flue gas. But considering beneficial energy, the high temperature and CO2 concentration of flue gas could improve the quality of the two-stage system recovery waste heat from BF slag. Keywords: Two-stage system; Blast furnace slag; Waste heat recovery; Exergy efficiency (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:273:y:2023:i:c:s0360544223005984 DOI: 10.1016/j.energy.2023.127204 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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