捣固焦高温碳素溶损反应行为研究

STUDY ON BEHAVIOR OF CARBON SOLUTION LOSS REACTION FOR STAMPING COKE

选择有代表性的捣固焦炭,在连续热反应装置内,考察不同温度下焦炭与CO2反应行为,揭示捣固焦炭在高炉内的劣化机理.结果表明,等温条件下,不同焦炭与CO2反应至30%的水平时,转化率随时间总体呈线性规律变化,反应动力学符合零级反应特征,表观活化能为89kJ/mol^151kJ/mol,碳溶反应后粉化程度与焦炭显气孔率及表观活化能有关,且粉化主要以扩孔和开孔为主.

The representative stamping cokes were selected to investigate the reaction behavior of coke and CO2 at different temperature through the continuous thermal weight loss equipment in this paper. The results indicated that the conversion of reaction coke with CO2 was shown a linear rule to reaction time at the isothermal condition and 30% finally weight loss of coke. The reaction dynamic was according with zero level reaction and the apparent activity energy was about 89 kJ/mol-151 kJ/mol. There was a high correlation between pulverized degree of carbons solution loss and the apparent porosity and activity energy of cokes. The coke pulveriza- tion was main due to extended and opened pore.