溶损反应动力学对焦炭溶损后强度的影响  

INFLUENCE OF SOLUTION LOSS REACTION ON POST-REACTION STRENGTH OF COKE

作　　者：郭瑞[1] 汪琦[1] 张松[1] 

机构地区：[1]辽宁科技大学化学冶金辽宁省重点实验室,辽宁鞍山博士生114051

出　　处：《煤炭转化》2012年第2期12-16,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(50974071)

摘　　要：为了分析溶损反应动力学行为对焦炭反应后强度的影响,在1 050℃～1 300℃的范围内,对三种典型焦炭进行了等温溶损反应实验.当焦炭的溶损失重率为25%时停止反应,通过I型转鼓检测焦炭的溶损后强度.结果表明,不同反应性的焦炭发生最严重的劣化梯度反应时的温度不同,高反应性焦炭为1 100℃左右,低于其他两种焦炭.虽然高反应性焦炭发生最严重的劣化梯度反应后的强度很低,但改变反应温度使反应速率加快或减慢都能使高反应性焦炭的反应后强度显著地提高.In order to clarify the solution loss kinetics behavior on coke strength after re- action, three representative cokes were used for solution loss reaction experiment. Isothermal reaction between coke and CO2 at 1 050 ℃-1 300℃C was stopped at a weight loss of 25%, and the strength of coke was tested by I type drum. The results showed that the temperature of gradient reaction brings the most serious degradation to three cokes were different due to different reactivity, and the temperature of the high reactive coke is about 1 100℃ which is lower than another two cokes. Although the strength of high reactive coke after gradient reaction of most serious degradation is poor, reaction rate is accelerated or declined by changing reaction temperature, post-reaction strength of high reactive coke increased markedly.

关 键 词：焦炭 反应后强度 温度 溶损反应 

分 类 号：TQ520.6[化学工程—煤化学工程]