【作者】 张殿伟； 郭培民； 赵沛；

【Author】 Zhang Dianwei;Guo Peimin;Zhao Pei;The State Key Laboratory for Advanced Iron and Steel Processes and Materials,Central Iron and Steel Research Institute;

【机构】 钢铁研究总院先进钢铁流程及材料国家重点实验室；

【摘要】 利用恒速升温热重法对低温下碳的气化反应进行了研究。结果表明:低温条件下（<1073K）碳的气化反应符合一级反应规律;减小颗粒度可以提高碳粉的气化性能,特别是当颗粒度减小到一定程度(D₅₀:4μm)时效果尤为显著;催化剂能够提高碳粉的气化性能,使其等动力学温度降低,特别是当细化和催化同时作用时气化反应效率更高;活性炭的气化性能优于相同粒度的石墨粉;Li₂CO₃、Na₂CO₃、K₂CO₃具有相似的催化机理;未添加催化剂的碳粉也具有相似的气化机理。更多还原

【Abstract】 The Boudouard reaction at low temperatures was investigated by means of thermogravimetric method at constant heating rate.The gasification reaction fits the first order reaction below 1073 K.The rate of carbon gasification is improved with particle refining,especially to a certain size（D50:4μm）.Isokinetic temperature is decreased with addition of catalyst.The effects of gasification reaction are remarkably improved by means of particle refining and addition of catalyst.The gasification effect of active carbon is better than that of graphite with the same particle size.Catalytic mechanisms of Boudouard reaction are similar when used Li₂CO₃,Na₂CO₃ and K₂CO₃ as catalysts.Mechanisms of gasification reaction of various kinds of carbon are also similar without addition of any catalyst.更多还原