铁焦气化反应行为的实验室研究与分析

Research and analysis on gasification reaction behavior of iron coke in laboratory

在实验室使用热失重法研究了不同铁焦的气化反应行为,测定了铁焦气化反应开始温度,并运用FactSage热力学软件进行了理论分析。结果表明:铁焦中金属铁含量越高,气化速度越快,且随温度升高而加快;金属铁有促使气化反应开始温度降低的作用,且其含量越高,气化反应开始温度降低越多;在气化反应初期,金属铁被CO2氧化,结果试样质量不减反增。

The gasification behavior of different iron cokes was studied in laboratory by the means of thermogravimetry technique, the temperatures at which iron cokes start to react with CO2 were measured, and theoretical analysis was con- ducted with the FactSage thermodynamic software. The results show that the higher the metallic iron content in iron coke, the higher the gasification rate, and it increases with the increasing temperature; metallic iron can promote the de- crease of starting temperature of gasification reaction, and the higher the metallic iron content, the more the decrease ex tent of gasification starting temperature; at the initial stage of gasification reaction, metallic iron in iron coke is oxidized by C（）2 , as a result, the weight of samples not only decrease but also increase.