COREX喷煤模型及应用分析  

Coal Injection Model for COREX and Its Application Analysis

作　　者：李海峰[1] 王臣[1] 邹宗树[1] 周渝生[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]宝山钢铁股份有限公司技术中心,上海201900

出　　处：《过程工程学报》2009年第S1期349-353,共5页The Chinese Journal of Process Engineering

摘　　要：按照不同的冶金功能把熔化气化炉划分为炉缸、风口、填充床、流化床和自由空间5个区域.在已开发的COREX工艺整体静态模型的基础上,根据各区域内的物理化学进程设定各区域间的边界条件,对各区域分别建立了物料平衡、热平衡模型并联立求解.考察了喷煤时熔化气化炉内各区域的能量分布和物料流状况.利用喷煤区域模型能够研究喷煤对理论燃烧温度、氧分配比、风口煤气量等重要参数的影响,模型计算结果显示,喷吹粉煤量为250kg/tHM时,理论燃烧温度降低672℃.According to different metallurgical functions, COREX melter gasifier is divided into five zones: hearth, raceway, packed bed, fluidized bed and free board. Setting the inter-zone boundary conditions and parameters based on the physical and chemical processes in each zone on the basis of monolithic static model. Mass and heat balance models for each zone are developed and simultaneously solved. The model calculation can give the distribution of energy and mass flow of materials of the melter gasifier in pulverized coal injection. The effect of PCI on theoretical flame temperature, distribution ratio of oxygen and gas volume of the raceway, etc., can also be calculated by the coal injection model. The results show that the raceway adiabatic flame temperature calculated from model is decreased by 672℃ with an increase of 250 kg/tHM coal injection.

关 键 词：COREX 喷煤模型 应用分析 

分 类 号：TF557[冶金工程—钢铁冶金]