Experimental study on influence of calcium carbonate on coal pyrolysis behaviors

XIONG Yuanbin; WANG Qinhui; YANG Yukun; FANG Mengxiang; LUO Zhongyang

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Experimental study on influence of calcium carbonate on coal pyrolysis behaviors

Thermal Power Generation Issue 12, (2015)

更新时间：2025-09-28

- Experimental study on influence of calcium carbonate on coal pyrolysis behaviors
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ530.2
- Published Online：15 January 2016，
  
  Published：2015
- 稿件说明：
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XIONG Yuanbin, WANG Qinhui, YANG Yukun, et al. Experimental study on influence of calcium carbonate on coal pyrolysis behaviors[J]. Thermal Power Generation, 2015, (12).
DOI：

XIONG Yuanbin, WANG Qinhui, YANG Yukun, et al. Experimental study on influence of calcium carbonate on coal pyrolysis behaviors[J]. Thermal Power Generation, 2015, (12). DOI：

摘要

为了分析CaCO3对煤热解特性的影响，以脱灰后的神木煤为研究对象，采用管式炉热解装置，在500~800 ℃范围内，对添加CaCO3质量分数分别为0%

10%的煤样的热解产物产率和气体成分组成进行了实验研究。结果表明：CaCO3会与煤中的羧基发生反应，Ca作为大分子基团的交联点，会固定一部分大分子碎片，从而明显增加半焦产率并降低焦油产率，同时，CaCO3还会明显改变热解气体成分，并且在低温区和高温区影响不同。在500~600 ℃时，CaCO3会促进CH4，CO2和轻质烃类气体C2-C3的析出，但对CO基本无影响；在700~800 ℃时，CaCO3分解产生的CaO对H2，CH4和轻质烃类气体C2-C3的产率的促进作用与CO2对它们的抑制作用相互竞争，CO2浓度升高促进了半焦气化反应，会明显增加CO的产率。

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