An experimental and modeling study of ash deposition behaviour for co-firing peat with lignite

Yuanyuan Shao; Jinsheng Wang; Chunbao Charles Xu; Jesse Zhu; Fernando Preto; Guy Tourigny; Chadi Badour; Hanning Li

doi:10.1016/j.apenergy.2011.02.006

An experimental and modeling study of ash deposition behaviour for co-firing peat with lignite

Yuanyuan Shao
, Jinsheng Wang
, Chunbao Charles Xu
, Jesse Zhu
, Fernando Preto
, Guy Tourigny
, Chadi Badour
, Hanning Li

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

32 Citations (Scopus)

Abstract

Co-firing peat with lignite for power generation was studied at pilot-scale, focusing on the issue of ash deposition, the major concern for this application. A specially designed probe was used to measure the rate of ash deposition under similar conditions of power plant boiler operation. Fraction of peat in the feed was varied up to 100%. It was observed that whereas the ash deposition decreased in general with increasing fraction of low-ash peat, the decrease was significantly less than expected from ash content of the feed, suggesting higher deposition tendency of ash from the peat. Chlorine content in the deposited ash showed a maximum at a certain blend ratio of the feed, which could not be explained by fuel chlorine content alone. The ash and chlorine deposition behaviour has been analyzed and simulated by mathematical models where interactions between fuel chlorine, alkali and ash particles are parameterized. The models ought to be useful for control and optimization purposes, and also be useful for co-firing other fuel blends. © 2011.

Original language	English
Pages (from-to)	2635-2640
Journal	Applied Energy
Volume	88
Issue number	8
DOIs	https://doi.org/10.1016/j.apenergy.2011.02.006
Publication status	Published - Aug 2011
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors are thankful for financial support provided by the Ontario Ministry of Energy and the Ontario Centres of Excellence through the Atikokan Bioenergy Research Center (ABRC) Program. Ontario Power Generation and Peat Resources Limited are gratefully acknowledged for supplying the lignite and peat fuels used in the tests. Special thanks are extended to Dave Wambolt, Benjamin Bronson, and Bart Young for their participation and help with the tests.

Research Keywords

Ash deposition
Chlorine
Co-firing
Fluidized bed
Peat

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10.1016/j.apenergy.2011.02.006

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abstract = "Co-firing peat with lignite for power generation was studied at pilot-scale, focusing on the issue of ash deposition, the major concern for this application. A specially designed probe was used to measure the rate of ash deposition under similar conditions of power plant boiler operation. Fraction of peat in the feed was varied up to 100\%. It was observed that whereas the ash deposition decreased in general with increasing fraction of low-ash peat, the decrease was significantly less than expected from ash content of the feed, suggesting higher deposition tendency of ash from the peat. Chlorine content in the deposited ash showed a maximum at a certain blend ratio of the feed, which could not be explained by fuel chlorine content alone. The ash and chlorine deposition behaviour has been analyzed and simulated by mathematical models where interactions between fuel chlorine, alkali and ash particles are parameterized. The models ought to be useful for control and optimization purposes, and also be useful for co-firing other fuel blends. {\textcopyright} 2011.",

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AU - Shao, Yuanyuan

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AU - Preto, Fernando

AU - Tourigny, Guy

AU - Badour, Chadi

AU - Li, Hanning

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N2 - Co-firing peat with lignite for power generation was studied at pilot-scale, focusing on the issue of ash deposition, the major concern for this application. A specially designed probe was used to measure the rate of ash deposition under similar conditions of power plant boiler operation. Fraction of peat in the feed was varied up to 100%. It was observed that whereas the ash deposition decreased in general with increasing fraction of low-ash peat, the decrease was significantly less than expected from ash content of the feed, suggesting higher deposition tendency of ash from the peat. Chlorine content in the deposited ash showed a maximum at a certain blend ratio of the feed, which could not be explained by fuel chlorine content alone. The ash and chlorine deposition behaviour has been analyzed and simulated by mathematical models where interactions between fuel chlorine, alkali and ash particles are parameterized. The models ought to be useful for control and optimization purposes, and also be useful for co-firing other fuel blends. © 2011.

AB - Co-firing peat with lignite for power generation was studied at pilot-scale, focusing on the issue of ash deposition, the major concern for this application. A specially designed probe was used to measure the rate of ash deposition under similar conditions of power plant boiler operation. Fraction of peat in the feed was varied up to 100%. It was observed that whereas the ash deposition decreased in general with increasing fraction of low-ash peat, the decrease was significantly less than expected from ash content of the feed, suggesting higher deposition tendency of ash from the peat. Chlorine content in the deposited ash showed a maximum at a certain blend ratio of the feed, which could not be explained by fuel chlorine content alone. The ash and chlorine deposition behaviour has been analyzed and simulated by mathematical models where interactions between fuel chlorine, alkali and ash particles are parameterized. The models ought to be useful for control and optimization purposes, and also be useful for co-firing other fuel blends. © 2011.

KW - Ash deposition

KW - Chlorine

KW - Co-firing

KW - Fluidized bed

KW - Peat

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DO - 10.1016/j.apenergy.2011.02.006

M3 - RGC 21 - Publication in refereed journal

SN - 0306-2619

VL - 88

SP - 2635

EP - 2640

JO - Applied Energy

JF - Applied Energy

IS - 8

ER -

An experimental and modeling study of ash deposition behaviour for co-firing peat with lignite

Abstract

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Research Keywords

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