Taking the dry quenched coke of Xiangsteel as the research object,the start-ing reaction temperature and rapid reaction temperature of mixed coke samples of different grain sizes as well as the temperature difference between the two were investigated by simu-lating the working conditions such as circulating gas CO concentration and gas to material ratio in the dry quenching furnace.The results show that compared with the starting reac-tion temperature(445℃and rapid reaction temperature(944℃)of coke samples under pure CO2 atmosphere,the starting reaction temperature and rapid reaction temperature of coke samples increased by 34℃,59℃,72℃,80℃,and 48℃,73℃,79℃,84℃,re-spectively,when the CO concentration of the gas mixture was increased from 1.5%to 7.5%,which indicates that the appropriate increase of the gas mixture in the CO concentration can inhibit the coke dissolution reaction in the dry quenching furnace.When the reaction gas flow rate was increased,the starting reaction temperature of coke gradually decreased from 570℃to 517℃,and the rapid reaction temperature gradually decreased from 1 058℃to 1 023℃,indicating that the accelerated gas flow rate per unit time in the dry quenching oven would increase the reaction chance between coke and CO2,and promote the coke dissolution reaction.
关键词
干熄炉/焦炭/起始反应温度/快速反应温度/失重率
Key words
dry quenching oven/coke/initial reaction temperature/rapid reaction tem-perature/weight loss rate
维普
万方数据