Combustion behaviors and pollutant emission characteristics of low calorific oil shale and its semi-coke in a lab-scale fluidized bed combustor

Combustion behaviors and pollutant emission characteristics of low calorific oil shale and its... •Co-combustion performances of oil shale and its semi-coke were studied in a lab-scale bubbling fluidized bed combustor.•Synergic reactions between oil shale and its semi-coke were identified in terms of emissions.•It was recommended to increase the blending ratio of oil shale up to 50%.•The ultra-low emission of SO2 and NO was able to be achieved. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Energy Elsevier

Combustion behaviors and pollutant emission characteristics of low calorific oil shale and its semi-coke in a lab-scale fluidized bed combustor

Combustion behaviors and pollutant emission characteristics of low calorific oil shale and its semi-coke in a lab-scale fluidized bed combustor

Applied Energy 211 (2018) 631–638 Contents lists available at ScienceDirect Applied Energy journal homepage: www.elsevier.com/locate/apenergy Combustion behaviors and pollutant emission characteristics of low calorific oil shale and its semi-coke in a lab-scale fluidized bed combustor ⁎ ⁎ Yu Yang, Quanhai Wang , Xiaofeng Lu , Jianbo Li, Zhuo Liu Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education of China, Chongqing 400044, People’s Republic of China HIGHLIGHTS Co-combustion performances of oil shale and its semi-coke were studied in a lab-scale bubbling fluidized bed combustor. Synergic reactions between oil shale and its semi-coke were identified in terms of emissions. It was recommended to increase the blending ratio of oil shale up to 50%. The ultra-low emission of SO and NO was able to be achieved. ARTICLE I NFO ABSTRACT Keywords: Experiments on co-combustion of oil shale and its semi-coke were conducted in a lab-scale bubbling fluidized Oil shale bed. Oil shale blend ratios from 0 to 100% at the interval of 25% were separately tested at 800, 850 and 900 °C, Oil shale semi-coke to clarify combustion behaviors and pollutant emission characteristics. Results indicated that as oil shale mass Combustion behaviors fraction increased, the combustion efficiency of samples firstly increased, and then decreased. Positive sy- Pollutant emission and control characteristics nergistic relationships between oil shale and its semi-coke were identified. The addition of oil shale could help Fluidized bed combustor reducing the SO emissions during co-combustion, while the NO emissions showed no significant change. Meanwhile, with temperature rising, the CO concentrations of samples with lower oil shale blend ratios (0, 25% and 50%) slightly decreased, on the contrary, for higher oil shale blend ratios (75% and 100%), the CO con- centrations increased, however, the SO and NO...
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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0306-2619
D.O.I.
10.1016/j.apenergy.2017.10.071
Publisher site
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Abstract

•Co-combustion performances of oil shale and its semi-coke were studied in a lab-scale bubbling fluidized bed combustor.•Synergic reactions between oil shale and its semi-coke were identified in terms of emissions.•It was recommended to increase the blending ratio of oil shale up to 50%.•The ultra-low emission of SO2 and NO was able to be achieved.

Journal

Applied EnergyElsevier

Published: Feb 1, 2018

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