Effects of coke charging pattern on burden movement in COREX melter gasifier based on physical simulation  

作　　者：Li-hao Han Yue-hua Li Li-ning Han Yan-xia Liu Wei-qing Huang Lei Cao Su-ci Qi Xin Guan Jian-lu Yuan 

机构地区：[1]Department of Material Engineering,Hebei College of Industry and Technology,Shijiazhuang 050091,Hebei,China [2]Department of Basic Course Teaching,Hebei College of Industry and Technology,Shijiazhuang 050091,Hebei,China [3]First Rolling Mill,Anyang Iron&Steel Co.,Ltd.,Anyang 455000,Henan,China

出　　处：《Journal of Iron and Steel Research International》2022年第6期907-913,共7页

基　　金：This project was supported by Scientific Research Fund of Hebei College of Industry and Technology and also supported by the Natural Science Foundation of Hebei Province(E2017417008).

摘　　要：A three-dimensional semicircle cold model of COREX melter gasifier(MG)was established,and the effects of coke charging pattern on burden movement were investigated by adopting this model.The burden flow pattern of packed bed was measured with different coke charging amounts,coke charging positions,and coke sizes.The results show that the solid flow pattern presents a change from straight line type to reverse U type and finally to W type in MG with traditional coke charging,while the burden flow pattern experiences the change from straight line type to W type with platform and finally W type under center coke charging,and the solid flow pattern presents a change from straight line type to W type with platform and finally W type under intermediate coke charging.The difference demonstrates that coke charging pattern affects the uniform descending in MG to some degree.The burden in the coke charging zone keeps a straight line descending.No matter what kind of coke charging pattern is adopted,the burden residence time is shortened with the increase in coke charging amount,and the vertex of deadman decreases obviously,which is conducive to the renewal of the deadman.The appropriate coke charging amount and coke size should be well controlled at 8.7%and 5 mm,respectively.The results are useful not only in developing further understanding of solid flow in MG but also in verifying different mathematical models,particularly the coupled discrete element method with computational fluid dynamics simulation which has been increasingly used in the literature.

关 键 词：COREX melter GASIFIER COKE CHARGING PATTERN BURDEN MOVEMENT Flow PATTERN Physical simulation 

分 类 号：TF55[冶金工程—钢铁冶金]