气基竖炉工况焦炉煤气甲烷改质行为试验  

Experimental on CH_4 Reforming Behavior of Coke Oven Gas in Gas-Based Shaft Furnace

作　　者：吴开基 陈凌 张涛 郭敏 鹿存房 

机构地区：[1]重庆赛迪冶炼装备系统集成工程技术研究中心有限公司炼铁研究室,重庆401122

出　　处：《钢铁》2014年第3期11-16,23,共7页Iron and Steel

基　　金：重庆市自然科学基金计划资助项目(cstc2012jjA90001)

摘　　要：利用焦炉煤气＋气基竖炉生产优质海绵铁，可延伸焦化行业产业链，同时可促进中国废钢／海绵铁电炉短流程发展，改变钢铁行业能源、产品结构。针对典型焦炉煤气，通过基础性试验研究了在气基竖炉工况下，温度、H2O和CO2配比，高温海绵铁载体对焦炉煤气中甲烷改质行为的影响。研究结果表明，提高温度有利于焦炉煤气中甲烷的改质反应，1000℃时改质后有效还原气体体积分数最高可达80％；热态海绵铁对焦炉煤气改质有催化促进作用，可提高CO2参与改质反应比例至84．9％、H2O参与反应比例至100％；CO2配人体积分数2％～6％、H2O配人体积分数4％～10％为促进甲烷改质反应的适宜范围。Gas-based shaft furnace direct reduction process using coke oven gas, which can produce the high-quality sponge iron,is a good method to extend the industrial chain of the coking industry. On the other hand, it can also promote the development of the EAF process steelmaking with the scrap and sponge iron,which has a great signifi- cance to the change of the energy and product structure adjustment in Chinese steel industry. Effects of the operating conditions on CH~ reforming behavior of coke oven gas in gas-based shaft furnace, which include the temperature, H2O and CO2 ratio,and high temperature sponge iron,had been researched by basic experimental study. The results show that increasing temperature is beneficial to CH4 reforming behavior of coke oven gas, the content of effective reducing gas comes up to its highest value （about 80 H） at 1000 ℃. Hot sponge iron greatly catalyze and promote CH4 reforming of coke oven gas,which can improve the ratio of CO2 in reaction to 84.9% and the ratio of H2O in re- action to 100%;the appropriate addition of CO2 should be set 2% -6H, the addition of H2O 4%-10%.

关 键 词：气基竖炉 焦炉煤气 海绵铁 甲烷 

分 类 号：TQ546[化学工程—煤化学工程]