Theoretical Flammability Diagrams for Oxy-combustion

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• 作者：Tingguang Ma ; Michael Larranaga
• 关键词：Low ; calorific value gas ; Oxy ; combustion ; Flammability diagram ; HQR diagram
• 刊名：Fire Technology
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：52
• 期：2
• 页码：321-331
• 全文大小：883 KB
• 参考文献：1.Chomiak J, Longwell J, Sarofim A (1989) Combustion of low calorific value gases; problems and prospects. Prog Energy Combust Sci 15(2):109–129CrossRef
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  3.Jones GW, Kennedy RE (1933) Limits of inflammability of natural gases containing high percentages of carbon dioxide and nitrogen. Washington: Bureau of Mines Report of Investigations
  4.Chen L, Yong SZ, Ghoniem AF (2012) Oxy-fuel combustion of pulverized coal: Characterization, fundamentals, stabilization and CFD modeling. Prog Energy Combust Sci 38(2):156–214CrossRef
  5.Coward HF, Jones GW (1952) Limits of flammability of gases and vapors, DTIC Document
  6.Burgess DS et al (1982) Flammability of mixed gases. Pittsburgh: Bureau of Mines
  7.Heffington WM, Gaines WR, Renfroe DA (1984) Flammability limits of coal-derived low-btu gas mixtures containing large amounts of inert gases. Combust Sci Technol 36(3–4):191–197CrossRef
  8.Ma T (2013) A thermal theory for flammability diagrams guiding purge and inertion of a flammable mixture. Process Saf Prog 32(1):7CrossRef
  9.Ma T, Larranaga M (2014) Flammable state and dilution requirement for a gaseous mixture. Process Saf Prog 33(1):70–76CrossRef
  10.Ma T (2015) Engineering flammability for mixture safety. Springer (to be published)
  
• 作者单位：Tingguang Ma (1)
  Michael Larranaga (1)
  
  1. Department of Fire Protection and Safety Technology, Oklahoma State University, 492 Cordell South, Stillwater, OK, 74078, USA
  
• 刊物类别：Engineering
• 刊物主题：Civil Engineering
  Mechanics
  Characterization and Evaluation Materials
  Physics
  
• 出版者：Springer Netherlands
• ISSN：1572-8099

文摘

In order to utilize the low-calorific value gases, oxy-combustion technology is generally used to burn the diluted fuel mixture more efficiently, cleanly and safely. Here the thermal balance method is tailored to check the fuel mixture flammability with the help of theoretical flammability diagrams and non-dimensional HQR diagrams. Specifically, the contributions of diluent/oxidant/temperature are checked. Even with limited experimental data, they are found to be a powerful tool to understand the mixture flammability, since they are based on simple principles of energy conservation. This approach provides the foundation for fine-tuning safe operation parameters related to oxy-combustion technologies.