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Characteristics and kinetics of coal char steam gasification under microwave heating

机译:微波加热下煤焦蒸汽气化特性及动力学

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摘要

The behavior and kinetics of coal char steam gasification under microwave heating are investigated. The influence of the coal char particle size, water injection rate, and reaction temperature on the carbon conversion rate and gas product evolution during microwave heating gasification are considered and compared to the results from coal char steam gasification using conventional heating under the same conditions. The results show that microwave heating can accelerate the reaction rate of coal char steam gasification and improve the quality of the gas product. It was found that at temperatures varying from 600 to 900 degrees C, the coal char steam gasification reaction was well described using the shrinking core model (SCM). Activation energies of 82.8 kJ/mol and 114.3 kJ/mol were obtained for microwave heating and conventional electric heating, respectively.
机译:研究了微波加热下煤焦蒸汽气化的行为和动力学。考虑了煤焦粒度,注水速率和反应温度对微波加热气化过程中碳转化率和气体产物放出的影响,并将其与在相同条件下使用常规加热的煤焦蒸汽气化的结果进行了比较。结果表明,微波加热可以加快煤焦蒸汽气化反应速度,提高产气质量。已发现在600至900摄氏度的温度范围内,使用收缩核模型(SCM)可以很好地描述煤焦蒸汽气化反应。对于微波加热和常规电加热,分别获得了82.8 kJ / mol和114.3 kJ / mol的活化能。

著录项

  • 来源
    《Fuel》 |2019年第15期|115899.1-115899.7|共7页
  • 作者单位

    Henan Polytech Univ Coll Chem & Chem Engn Henan Key Lab Coal Green Convers Jiaozuo 454003 Henan Peoples R China;

    Henan Polytech Univ Coll Chem & Chem Engn Henan Key Lab Coal Green Convers Jiaozuo 454003 Henan Peoples R China|Zhengzhou Univ Henan Prov Ind Technol Res Inst Resources & Mat Zhengzhou 450001 Henan Peoples R China;

    Zhengzhou Univ Henan Prov Ind Technol Res Inst Resources & Mat Zhengzhou 450001 Henan Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Steam gasification; Microwave heating; Coal char; Kinetics;

    机译:蒸汽气化;微波加热;煤焦;动力学;

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