EFFECTS OF POROUS STRUCTURE ON COAL PARTICLE REACTIVITY OF COMBUSTION

陈鸿; 孙学信; 韩才元; 崔和平

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EFFECTS OF POROUS STRUCTURE ON COAL PARTICLE REACTIVITY OF COMBUSTION

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- EFFECTS OF POROUS STRUCTURE ON COAL PARTICLE REACTIVITY OF COMBUSTION
- CIESC Journal Issue 3, (1994)
- 作者机构：
  
  华中理工大学煤燃烧国家重点实验室!武汉430074,华中理工大学煤燃烧国家重点实验室!武汉430074,华中理工大学煤燃烧国家重点实验室!武汉430074,华中理工大学煤燃烧国家重点实验室,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q534
- Online First：25 June 1994，
  
  Published：25 June 1994
- 稿件说明：
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陈鸿, 孙学信, 韩才元, et al. EFFECTS OF POROUS STRUCTURE ON COAL PARTICLE REACTIVITY OF COMBUSTION[J]. CIESC Journal, 1994, (3).
DOI：

陈鸿, 孙学信, 韩才元, et al. EFFECTS OF POROUS STRUCTURE ON COAL PARTICLE REACTIVITY OF COMBUSTION[J]. CIESC Journal, 1994, (3). DOI：

摘要

提出无形孔模型

建立了控制煤粒燃烧过程的颗粒内部多相燃烧动力学方程、传热和传质方程、流动方程等

对单颗煤粒内部燃烧过程模型进行了数值求解

研究了孔隙率、比表面积、颗粒尺寸、颗粒温度等因素对煤焦反应性和燃烧机理的影响

并与Smith的实验结果进行了比较.

Abstract

Based on shapeless pore model (SPM) proposed by the authors

the equations of heterogeneous combustion kinetics

mass transfer

heat transfer

continuous momentum conservation of flow

which controll coal particle combustion were given. Numerical calculation of single particle combustion was made

and the effects of porosity

pore area

particle size and temperature on reactivities of chars were studied. It was found that ignition was heavily related to pore area

and was less related to porosity. The results were compared with the data of Smith. It was shown that SPM could be applied both to coal particle combustion and to heterogeneous reaction of other porous materials.

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