高岭土悬浮态煅烧系统中分解炉的数值模拟  

Numerical Simulation of Calciner in the Suspension System for Kaolin Calcining

作　　者：宋华庭 隋同波 陈翼 汤升亮 黄亚继[2] 唐鑫鑫 SONG Hua-ting;SUI Tong-bo;CHEN Yi;TANG Sheng-liang;HUANG Ya-ji;TANG Xin-xin(Sinoma International Engineering Co.,Ltd.,Nanjing 211100,China;School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]中国中材国际工程股份有限公司,南京211100 [2]东南大学能源与环境学院,南京210096

出　　处：《当代化工》2021年第6期1387-1391,共5页Contemporary Chemical Industry

基　　金：“十三五”国家重点研发计划项目,新型低碳水泥高效制备关键技术与装备研发及国际应用示范(项目编号:2016YFE0206100)。

摘　　要：以我司开发的悬浮态煅烧高岭土系统中的燃煤分解炉为研究对象,采用CPFD(computational particle fluid dynamics)数值模拟方法,模拟了分解炉内传热、传质及化学反应,获得了分解炉内颗粒和流体的轨迹及温度。结果表明:从底部进入的气流在分解炉缩口处加速形成了喷腾效应,能够使原料和煤粉呈悬浮态快速分散开;分解炉内煤粉燃烧效果和高岭土分解活化效果很好,表明分解炉的设计合理。Numerical simulation was conducted on a coal calciner in the suspension system for kaolin calcining by using CPFD method. The simulation considered heat and mass transfer, as well as chemical reaction in the calciner. The track and temperature of particle and fluid were obtained. The results showed that significant spouting effect formed at the neck of the calciner after the fluids entering in calciner from bottom were accelerated. As a result, raw material and coal particles were instantly dispersed with suspension state. The coal particles in the calciner showed complete combustion, and kaolin in the calciner was almost completely decomposed. This indicates that the design of the calciner for kaolin calcining is feasible.

关 键 词：高岭土 煅烧 分解炉 CPFD 

分 类 号：TQ172.4+2[化学工程—水泥工业]