Computation Transport Phenomena in Chemical Engineering. Influence of Coal Type and Briquetting Conditions on Combustion Rate of Biobriquette.

• Lu Guo-Qing

  Department of Ecological Engineering Toyohashi University of Technology

• Kim Hee-Joon

  Department of Ecological Engineering Toyohashi University of Technology

• Naruse Ichiro

  Department of Ecological Engineering Toyohashi University of Technology

• Ohtake Kazutomo

  Department of Ecological Engineering Toyohashi University of Technology

• Kamide Mitsushi

  Department of Resource and Energy Hokkaido Industrial Research Institute

Bibliographic Information

Other Title

• 流れの数値解析と化学装置のモデリング　　バイオブリケットの燃焼速度に及ぼす炭種・成型条件の影響
• バイオブリケット ノ ネンショウ ソクド ニ オヨボス タンシュ セイケイ ジ

Abstract

The combustion time history of a biobriquette is divided into two stages in which volatile matter content mainly evolves and burns prior to char combustion. The volume model for the former stage and the shrinking-core reaction model for the latter stage are employed to calculate the combustion rate of the biobriquette. In this study, the influence of briquette shape, compression pressure and types of coal on the combustion rate are investigated by using the two models and experimental data.<BR>The shapes of spherical and cylindrical biobriquettes hardly influence the combustion behavior of the biobriquette (if they have same diameter and the length of cylinder is equal to its diameter). Compression pressure has no effect on the rate of the former stage but gave obvious effect on the latter stage through the density change of the biobriquette when it is under about 245 MPa. The reaction rate constant and its order vary linearly with the fuel ratio of coal briquette in the former stage. The type of coal and compression pressure have a larger influence on the rate of the latter stage due to different porosity in the ash layer. Finally, the combustion rate can be analyzed by the obtained models and semi-empirical equation.

Journal

• KAGAKU KOGAKU RONBUNSHU

  KAGAKU KOGAKU RONBUNSHU 23 (6), 954-961, 1997

  The Society of Chemical Engineers, Japan

Keywords

• Coal
• Biomass
• Biobriquette
• Combustion
• Porosity

Details

• CRID: 1390282679485403136
• NII Article ID: 10002768534
• NII Book ID: AN00037234
• DOI: 10.1252/kakoronbunshu.23.954
• COI: 1:CAS:528:DyaK2sXnsVGis78%3D
• ISSN: 13499203
• ISSN: 0386216X
• NDL BIB ID: 4334872
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4334872
• Web Site: http://www.jstage.jst.go.jp/article/kakoronbunshu1975/23/6/23_6_954/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed