Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO<sub>2</sub> atmosphere

CHEN Hongwei; YAN Jingbo; ZHANG Zhicai; LI Yan

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Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO₂ atmosphere

更新时间：2025-09-28

- Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO₂ atmosphere
- Thermal Power Generation Vol. 43, Issue 8, Pages: 60-63(2014)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ132.32;TQ541
- Published：2014
- 稿件说明：
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CHEN Hongwei, YAN Jingbo, ZHANG Zhicai, et al. Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO₂ atmosphere[J]. Thermal power generation, 2014, 43(8): 60-63.
DOI：

CHEN Hongwei, YAN Jingbo, ZHANG Zhicai, et al. Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO₂ atmosphere[J]. Thermal power generation, 2014, 43(8): 60-63. DOI：

摘要

以CaO为催化剂

在热重分析仪上进行了恒温煤焦CO2催化气化试验

分析了煤焦的催化气化特性。研究表明:CaO的催化效果和CaO的添加方式有关

机械混合法添加CaO后催化效果不明显

浸渍法添加CaO后煤焦的气化反应性明显提高;随着CaO添加量的增大

煤焦气化反应性先升高后降低

CaO的添加饱和度为5%;较高的气化温度会削弱CaO的催化效果;先添加CaO后制焦所得煤焦的气化反应性要高于先制焦后添加CaO的煤焦。

Abstract

Isothermal gasification of Huaidong coal char in CO2 atmosphere catalyzed by CaO was carried out on a thermogravimetric analyzer.The gasification performance of char with CaO catalytic action was investigated.The results show that

the catalytic effect of CaO was related to its adding way.It was unconspicuous when the CaO was mechanically mixed

while the coal char's gasification reactivity sharply increased when the CaO was added by immersion method.With an increase in the CaO addition

the reactivity of coal char rose first and then deceased

the loading saturation level of CaO was 5%.The catalytic effect of CaO was weakened at high temperatures.The reactivity of coal char with CaO added before the char preparation was higher than that of the char with CaO added after the char formation.

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Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO2 atmosphere

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Effect of CaO on isothermal gasification characteristics of Huaidong coal char in CO₂ atmosphere