Isothermal study of gasification process of biomass char and coal char in CO<sub>2</sub> atmosphere

GENG Weiwei; ZUO Haibin; WANG Guangwei; ZHANG Jianliang

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Isothermal study of gasification process of biomass char and coal char in CO₂ atmosphere

更新时间：2025-09-28

- Isothermal study of gasification process of biomass char and coal char in CO₂ atmosphere
- Thermal Power Generation Vol. 44, Issue 5, Pages: 102-107(2015)
- 作者机构：
  
  1. 北京科技大学钢铁冶金新技术国家重点实验室
  2. 北京科技大学冶金与生态工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ541
- Published：2015
- 稿件说明：
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GENG Weiwei, ZUO Haibin, WANG Guangwei, et al. Isothermal study of gasification process of biomass char and coal char in CO₂ atmosphere[J]. Thermal power generation, 2015, 44(5): 102-107.
DOI：

GENG Weiwei, ZUO Haibin, WANG Guangwei, et al. Isothermal study of gasification process of biomass char and coal char in CO₂ atmosphere[J]. Thermal power generation, 2015, 44(5): 102-107. DOI：

摘要

利用失重热天平研究生物质焦和煤焦在900~1 050℃下的等温CO2气化反应性

以体积模型及收缩核模型2种代表性的气固反应模型

分析了生物质焦和煤焦气化过程的动力学参数。结果表明:随着气化温度升高

生物质焦和煤焦的气化反应时间均缩短

且生物质焦的气化性能优于煤焦;生物质焦颗粒近似平板片状结构

采用收缩核模型(SCM)形状因子m=0可以表征其气化过程

且其等温CO2气化活化能为101.86kJ/mol;煤焦颗粒结构收缩核模型m=1/2及m=2/3均能够表征煤焦气化过程

且其等温CO2气化煤焦活化能分别为159.80、168.88kJ/mol。

Abstract

By weightlessness thermo-balance

Isothermal gasification characteristics of biomass char(BC)and coal char(CC)in CO2 atmosphere at 900℃

950℃

1 000 ℃ and 1 050 ℃ was investigated.The gassolid reaction models such as the volume model(VM)and shrinking core model(SCM)were applied to describe the reaction behavior of the chars.The results show that

with an increase in gasification temperature

the gasification rate of both the BC and CC increased and gasification reactivity of the BC was superior to that of the CC.The BC particle has flake-like structure

so the best model describing its gasification reaction reactivity is the SCM with shape factor m of 0

under this condition

the BC's activation energy was101.86kJ/mol.While for the CC

the SCM with shape factor m of 1/2and 2/3can both describe its gasification process

and the isothermal reaction activation energy in CO2 atmosphere was 159.68kJ/mol and168.88kJ/mol

respectively.

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Isothermal study of gasification process of biomass char and coal char in CO2 atmosphere

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摘要

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Isothermal study of gasification process of biomass char and coal char in CO₂ atmosphere