转炉高温烟气喷吹煤粉回收煤气工业试验研究  

Industrial testing of high quality converter gas recovery by injecting pulverized coal into the high temperature gas of converter

作　　者：周建安[1,2] 蒋学凯 谢剑波[1,2] 张华 倪红卫[1,2] 王宝[1,2] 李雷[3] 王社教[3] 李海峰 廖纲 王国秋 

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [3]中国宝武武钢集团鄂城钢铁有限责任公司,湖北鄂州436000

出　　处：《炼钢》2017年第6期67-72,共6页Steelmaking

摘　　要：针对目前转炉煤气低热值和回收率低的问题,提出以中国宝武武钢集团鄂城钢铁有限责任公司35 t转炉煤气回收系统为研究对象来探究制备高品质转炉煤气的新工艺。通过对比不同煤粉喷吹进入转炉汽化冷却烟道内的反应效果,来研究喷吹量对转炉煤气回收质与量的影响。结果表明:在煤气回收期,喷吹煤粉时,煤气中O_2和CO_2含量降低,CO、H2含量和煤气回收总量增加,煤气热值提高。当煤粉喷吹速率为30 kg/min时,转炉煤气中O_2和CO_2体积分数分别降低63.92%和41.19%,CO和H2体积分数分别提高20.09%、240.18%,煤气回收时间增加11.40%。因此,新工艺具有提高转炉煤气回收质和量的优点。Based on low calorific value and recovery amount of converter gas from the present various steel mills, a new process on the basis of the industrial trial in a converter with 35 t steel capacity from Echeng Iron and Steel Co., Ltd. was proposed for preparation of high-quality converter gas. By comparing the injecting rate and various carbon materials injected into the converter vaporization cooling flue, the effects of which on the quality and amount of converter gas are therefore investigated. The results show that, with increasing the injection amount of carbon materials, the volume fractions of 02 and C02 in the gas are decreased, yet CO and I-I2 in the gas are increased correspondingly. When the rate of pulverized coal injection is 30 kg/min, the volume fractions of 02 and C02 in the gas are decreased by 63.92 %, 41.19 %, but CO and H2 in the gas are increased by 20.09 %, 240.18 % and the recovery time of gas is increased by 11.40 %, respectively. Therefore, this process is beneficial to improving the quality and amount of converter gas.

关 键 词：转炉煤气回收 汽化烟道 喷吹 煤粉 

分 类 号：TF71[冶金工程—钢铁冶金]