神东矿区高挥发分喷吹煤粉对焦炭缓熔性能的影响研究  

Effect of Shendong mining area high volatile pulverized coal injection on slow melting performance of coke

作　　者：武琳琳 Wu Linlin(Beijing Research Institute of Coal Chemistry,CCTEG China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization,Beijing 100013,China;National Energy Technology&Equipment Laboratory of Coal Utilization and Emission Control,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司煤化工分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《煤化工》2022年第3期104-107,共4页Coal Chemical Industry

基　　金：煤炭科学技术研究院科技发展基金项目(2020CX-Ⅱ-04)。

摘　　要：以神东矿区高挥发分烟煤为对象,研究高炉喷吹煤粉对焦炭缓熔性能的影响规律。结果发现,神东喷吹煤具有低灰、低硫、高发热量、高化学反应活性、低磷含量、低钾钠含量等优点,是优良的喷煤配煤;其干馏煤粉反应活性高于冶金焦炭,加入后可降低不同性能焦炭的热反应性(CRI)和反应后强度(CSR)的差别,且对使用性能较差的焦炭的效果更好;加入该干馏煤粉后,焦炭与CO_(2)的反应可分为三个阶段,干馏煤粉的存在减缓了焦炭的熔损反应,有利于保持焦炭在高炉中的作用,因而在高炉风口回旋区保留一定量的未燃煤粉是有益的。Based on the high volatile bituminous coal in Shendong mining area, the effect of pulverized coal injection into blast furnace on the slow melting performance of coke was studied. The results showed that the high volatile pulverized coal injection in Shendong mining area had the advantages of low ash, low sulfur, high calorific value, high chemical reactivity,low phosphorus content, and low potassium and sodium content, being excellent coal for injection blending. The reactivity of such dry distillation pulverized coal was higher than that of the metallurgical coke. The addition of Shendong high volatile dry distillation pulverized coal would reduce the difference of coke reactivity index(CRI) and coke strength after reaction(CSR) of the coke with different properties, and it had a better effect on the use of coke with lower quality. After adding such dry distillation pulverized coal, the reaction between coal coke and CO2could be divided into three stages. The existence of Shendong high volatile dry distillation pulverized coal slowed down the melting loss reaction of coke and was conducive to maintaining the role of coke in the blast furnace. Therefore, it was beneficial to retain a certain amount of unburned pulverized coal in the raceway of blast furnace.

关 键 词：高炉喷吹 神东煤 焦炭熔损反应 热反应性(CRI) 反应后强度(CSR) 

分 类 号：TQ520.1[化学工程—煤化学工程]