大型石油焦回转窑煅烧过程三维数值模拟  

3D Numerical simulation of calcination process in petroleum coke rotary kiln

作　　者：刘朝东[1] 罗立军 崔银河[1] 樊利军[1] 孙毅[1] 

机构地区：[1]沈阳铝镁设计研究院,辽宁沈阳110001 [2]霍煤鸿骏铝电有限责任公司,内蒙古霍林郭勒029200

出　　处：《轻金属》2011年第1期40-42,57,共4页Light Metals

摘　　要：通过采用商业软件Fluent12.1建立了大型石油焦回转窑窑内煅烧过程三维数值模拟模型,获得了在正常操作状态下窑内温度场、流场和物质浓度场的分布状况。计算结果显示,由于窑尾变径的影响,窑尾气流速加快,影响石油焦粉料的带出;窑内石油焦的升温速度较快,导致挥发分在靠近窑尾段大量析出,窑尾温度偏高,大量挥发分没有及时在窑内完全燃烧;由于窑头漏风的影响,造成煅烧带炭质烧损的增加。A 3D numerical simulation model of calcination process in petroleum coke rotary kiln was established by using the commercial CFD code Fluent 12.1.The distribution of flowing field,temperature field and mass concentration field in the kiln was obtained by the model.The computation results indicate that the velocity of gas is accelerated by the change of rotary kiln＇s diameter.It will influence the amount of fine coke which take away by the flow gas.Because of the rapid rise of coke temperature,most of the volatile in petroleum coke released near the outer of rotary kiln.It makes the tail of rotary kiln get a high temperature and lots of volatile can＇t be combusted immediately in rotary kiln.The amount of burnt coke is increased by the influence of leak air in front of kiln.

关 键 词：回转窑 数值模拟 石油焦 挥发分 

分 类 号：TQ127.11[化学工程—无机化工]