Pressurized pyrolysis and gasification of Chinese typical coal samples

Chen, Hanping; Luo, Zhiwu; Yang, Haiping; Ju, Fudong; Zhang, Shihong

doi:10.1021/ef700684m

Title: Pressurized pyrolysis and gasification of Chinese typical coal samples

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Abstract

This paper aims to understand the pyrolysis and gasification behavior of different Chinese coal samples at different pressures. First, the pyrolysis of four typical Chinese coals samples (Xiaolongtan brown coal, Shenfu bituminous coal, Pingzhai anthracite coal, and Heshan lean coal) were carried out using a pressurized thermogravimetric analyzer at ambient pressure and 3 MPa, respectively. The surface structure and elemental component of the resultant char were measured with an automated gas adsorption apparatus and element analyzer. It was observed that higher pressure suppressed the primary pyrolysis, while the secondary pyrolysis of coal particles was promoted. With respect to the resultant solid char, the carbon content increased while H content decreased; however, the pore structure varied greatly with increasing pressure for different coal samples. For Xiaolongtan brown coal (XLT) char, it decreased greatly, while it increased obviously for the other three char types. Then, the isothermal gasification behavior of solid char particles was investigated using an ambient thermal analyzer with CO{sub 2} as the gasifying agent at 1000{sup o}C. The gasification reactivity of solid char was decreased greatly with increasing pyrolysis pressure. However, the extent of change displayed a vital relation with the characteristics of the original coal sample. 26 refs.,more » 5 figs., 5 tabs.« less

Authors:

Chen, Hanping; Luo, Zhiwu; Yang, Haiping; Ju, Fudong; Zhang, Shihong ^[1]

Huazhong University of Science and Technology, Wuhan (China). State Key Laboratory of Coal Combustion

Publication Date:: Sat Mar 15 00:00:00 EDT 2008

OSTI Identifier:: 21049726

Resource Type:: Journal Article

Journal Name:: Energy and Fuels

Additional Journal Information:: Journal Volume: 22; Journal Issue: 2; Other Information: yhping2002@163.com; Journal ID: ISSN 0887-0624

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; PRESSURIZATION; PYROLYSIS; COAL GASIFICATION; BROWN COAL; BITUMINOUS COAL; ANTHRACITE; CHINA; THERMAL GRAVIMETRIC ANALYSIS; CHARS; PORE STRUCTURE; THERMAL ANALYSIS; PRESSURE DEPENDENCE

Citation Formats


                    Chen, Hanping, Luo, Zhiwu, Yang, Haiping, Ju, Fudong, and Zhang, Shihong. Pressurized pyrolysis and gasification of Chinese typical coal samples.  United States: N. p., 2008. 
        Web.  doi:10.1021/ef700684m.

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                    Chen, Hanping, Luo, Zhiwu, Yang, Haiping, Ju, Fudong, & Zhang, Shihong. Pressurized pyrolysis and gasification of Chinese typical coal samples.  United States.  https://doi.org/10.1021/ef700684m

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                    Chen, Hanping, Luo, Zhiwu, Yang, Haiping, Ju, Fudong, and Zhang, Shihong. 2008.  
        "Pressurized pyrolysis and gasification of Chinese typical coal samples".  United States.  https://doi.org/10.1021/ef700684m.

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@article{osti_21049726,

  title        = {Pressurized pyrolysis and gasification of Chinese typical coal samples},

  author       = {Chen, Hanping and Luo, Zhiwu and Yang, Haiping and Ju, Fudong and Zhang, Shihong},

  abstractNote = {This paper aims to understand the pyrolysis and gasification behavior of different Chinese coal samples at different pressures. First, the pyrolysis of four typical Chinese coals samples (Xiaolongtan brown coal, Shenfu bituminous coal, Pingzhai anthracite coal, and Heshan lean coal) were carried out using a pressurized thermogravimetric analyzer at ambient pressure and 3 MPa, respectively. The surface structure and elemental component of the resultant char were measured with an automated gas adsorption apparatus and element analyzer. It was observed that higher pressure suppressed the primary pyrolysis, while the secondary pyrolysis of coal particles was promoted. With respect to the resultant solid char, the carbon content increased while H content decreased; however, the pore structure varied greatly with increasing pressure for different coal samples. For Xiaolongtan brown coal (XLT) char, it decreased greatly, while it increased obviously for the other three char types. Then, the isothermal gasification behavior of solid char particles was investigated using an ambient thermal analyzer with CO{sub 2} as the gasifying agent at 1000{sup o}C. The gasification reactivity of solid char was decreased greatly with increasing pyrolysis pressure. However, the extent of change displayed a vital relation with the characteristics of the original coal sample. 26 refs., 5 figs., 5 tabs.},

  doi          = {10.1021/ef700684m},

  url          = {https://www.osti.gov/biblio/21049726},
  journal      = {Energy and Fuels},

  issn         = {0887-0624},

  number       = 2,

  volume       = 22,

  place        = {United States},

  year         = {Sat Mar 15 00:00:00 EDT 2008},

  month        = {Sat Mar 15 00:00:00 EDT 2008}

}

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