Comparative study on SO2 release and removal under air and oxy-fuel combustion in a fluidized bed combustor

Zhimin Zheng; Hui Wang; Li Yang; Xing Wei; Yongjun Guo; Shuai Guo; Shaohua Wu

doi:10.3969/j.issn.1003-7985.2015.02.013

Comparative study on SO₂ release and removal under air and oxy-fuel combustion in a fluidized bed combustor

Zhimin Zheng
, Hui Wang^*
, Li Yang
, Xing Wei
, Yongjun Guo
, Shuai Guo
, Shaohua Wu

^*Corresponding author for this work

School of Energy Science and Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

SO₂ release and removal were studied under both the air and oxy-fuel combustion conditions using an anthracite coal from the Jincheng mine in China on a bench-scale fluidized bed combustor (FBC). Special attention was paid to the effects of the combustion atmosphere, O₂ concentration, bed temperature, and limestone addition. The released amount of SO₂ was clearly higher under 30%O₂/70%CO₂ than that of the air atmosphere. As the O₂ concentration in O₂/CO₂ mixture increased from 21% to 40%, the released amount of SO₂ increased significantly, but then it decreased when the O₂ concentration increased up to 50%. The bed temperature from 860 to 920℃ has no obvious influence on the the SO₂ release but shows a strong influence on the desulfurization with limestone in both oxy-fuel and air conditions. The maximum SO₂ removal efficiency appears to be at 880 to 900℃ for both the air and oxy-fuel combustion conditions.

Original language	English
Pages (from-to)	232-237
Number of pages	6
Journal	Journal of Southeast University (English Edition)
Volume	31
Issue number	2
DOIs	https://doi.org/10.3969/j.issn.1003-7985.2015.02.013
State	Published - 1 Jun 2015
Externally published	Yes

Keywords

Fluidized bed
Limestone desulfuration
Oxy-fuel combustion
SO release

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10.3969/j.issn.1003-7985.2015.02.013

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title = "Comparative study on SO2 release and removal under air and oxy-fuel combustion in a fluidized bed combustor",

abstract = "SO2 release and removal were studied under both the air and oxy-fuel combustion conditions using an anthracite coal from the Jincheng mine in China on a bench-scale fluidized bed combustor (FBC). Special attention was paid to the effects of the combustion atmosphere, O2 concentration, bed temperature, and limestone addition. The released amount of SO2 was clearly higher under 30\%O2/70\%CO2 than that of the air atmosphere. As the O2 concentration in O2/CO2 mixture increased from 21\% to 40\%, the released amount of SO2 increased significantly, but then it decreased when the O2 concentration increased up to 50\%. The bed temperature from 860 to 920℃ has no obvious influence on the the SO2 release but shows a strong influence on the desulfurization with limestone in both oxy-fuel and air conditions. The maximum SO2 removal efficiency appears to be at 880 to 900℃ for both the air and oxy-fuel combustion conditions.",

keywords = "Fluidized bed, Limestone desulfuration, Oxy-fuel combustion, SO release",

author = "Zhimin Zheng and Hui Wang and Li Yang and Xing Wei and Yongjun Guo and Shuai Guo and Shaohua Wu",

year = "2015",

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doi = "10.3969/j.issn.1003-7985.2015.02.013",

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TY - JOUR

T1 - Comparative study on SO2 release and removal under air and oxy-fuel combustion in a fluidized bed combustor

AU - Zheng, Zhimin

AU - Wang, Hui

AU - Yang, Li

AU - Wei, Xing

AU - Guo, Yongjun

AU - Guo, Shuai

AU - Wu, Shaohua

PY - 2015/6/1

Y1 - 2015/6/1

N2 - SO2 release and removal were studied under both the air and oxy-fuel combustion conditions using an anthracite coal from the Jincheng mine in China on a bench-scale fluidized bed combustor (FBC). Special attention was paid to the effects of the combustion atmosphere, O2 concentration, bed temperature, and limestone addition. The released amount of SO2 was clearly higher under 30%O2/70%CO2 than that of the air atmosphere. As the O2 concentration in O2/CO2 mixture increased from 21% to 40%, the released amount of SO2 increased significantly, but then it decreased when the O2 concentration increased up to 50%. The bed temperature from 860 to 920℃ has no obvious influence on the the SO2 release but shows a strong influence on the desulfurization with limestone in both oxy-fuel and air conditions. The maximum SO2 removal efficiency appears to be at 880 to 900℃ for both the air and oxy-fuel combustion conditions.

AB - SO2 release and removal were studied under both the air and oxy-fuel combustion conditions using an anthracite coal from the Jincheng mine in China on a bench-scale fluidized bed combustor (FBC). Special attention was paid to the effects of the combustion atmosphere, O2 concentration, bed temperature, and limestone addition. The released amount of SO2 was clearly higher under 30%O2/70%CO2 than that of the air atmosphere. As the O2 concentration in O2/CO2 mixture increased from 21% to 40%, the released amount of SO2 increased significantly, but then it decreased when the O2 concentration increased up to 50%. The bed temperature from 860 to 920℃ has no obvious influence on the the SO2 release but shows a strong influence on the desulfurization with limestone in both oxy-fuel and air conditions. The maximum SO2 removal efficiency appears to be at 880 to 900℃ for both the air and oxy-fuel combustion conditions.

KW - Fluidized bed

KW - Limestone desulfuration

KW - Oxy-fuel combustion

KW - SO release

UR - https://www.scopus.com/pages/publications/84938093021

U2 - 10.3969/j.issn.1003-7985.2015.02.013

DO - 10.3969/j.issn.1003-7985.2015.02.013

M3 - 文章

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SN - 1003-7985

VL - 31

SP - 232

EP - 237

JO - Journal of Southeast University (English Edition)

JF - Journal of Southeast University (English Edition)

IS - 2

ER -

Comparative study on SO₂ release and removal under air and oxy-fuel combustion in a fluidized bed combustor

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Keywords

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