不同金属化合物催化呼和浩特煤加氢气化实验研究

洪冰清; 战书鹏; 王兴军; 王辅臣; 于广锁

不同金属化合物催化呼和浩特煤加氢气化实验研究

华东理工大学煤气化教育部重点实验室, 上海 200237

基金项目: 国家重点基础研究发展规划(973计划, 2010CB227000); 国家高技术研究发展计划(863计划, 2009AA04Z159); 中央高校基本科研业务费专项资金资助(WB0914030)。

详细信息

通讯作者:
于广锁, E-mail:gsyu@ecust.edu.cn; 王兴军, E-mail:wxj@ecust.edu.cn.

中图分类号: TQ530.2
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- 文章访问数: 1933
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出版历程
- 收稿日期: 2011-10-11
- 修回日期: 2011-12-02
- 刊出日期: 2012-07-31

Experimental study on Hohhot coal hydrogasification catalysed by different metal compounds

Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

摘要

摘要: 在加压固定床反应器上考察了K₂CO₃、Na₂CO₃、Ca(OH)₂、Ni(NO₃)₂催化剂对呼和浩特煤加氢气化反应的催化效果,并考察了温度对催化剂效果的影响。实验结果表明,不同种类的金属化合物对气化反应的催化效果有明显影响,催化活性依次为K> Na> Ni> Ca。与原煤气化相比,在相同时间内达到相同碳转化率时,碱金属化合物K₂CO₃的加入使原煤加氢气化的气化温度降低150℃以上,碱金属化合物Na₂CO₃降低约150℃,过渡金属化合物Ni(NO₃)₂降低50℃以上,碱土金属化合物Ca(OH)₂的加入会吸收一部分CO₂产品,表观上反而降低了碳转化率。SEM及BET表征结果表明,煤样负载不同金属化合物催化剂后表面形态及孔结构有一定差异。
- 金属化合物 /
- 固定床 /
- 催化气化 /
- 加氢气化
Abstract: The catalysis of K₂CO₃, Na₂CO₃, Ca(OH)₂ and Ni(NO₃)₂ on the hydrogasification of Hohhot coal was studied in a pressurized fixed-bed reactor, in which the effects of temperature were investigated. The experimental results show that different kinds of metal have a significant difference in the catalysis to the hydrogasification reaction, and the order of catalytic activity is as follows: K > Na> Ni > Ca. Compared with the non-catalytic coal hydrogasification, the temperature of hydrogasification catalysed by K₂CO₃ is dropped by more than 150℃ under the same carbon conversion at the same time and reduced about 150℃ by Na₂CO₃ and more than 50℃ by Ni(NO₃)₂. However, the adding of Ca(OH)₂ even decreases the observed carbon conversion due to the sorption of Ca(OH)₂ for CO₂ produced. The SEM and BET results show that coal samples loaded with different metal compounds catalysts have different surface morphologies and pore structures as well.
- metal compounds /
- fixed-bed reactor /
- catalytic gasification /
- hydrogasification

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