喷旋管道式分解炉内燃烧、分解过程的CFD模拟  

CFD simulation of combustion and decomposition process inside a ejecting-revolving pipe precalciner

作　　者：叶旭初[1] 李祥东[1] 胡道和[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2006年第1期62-66,共5页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：针对水泥分解炉内煤粉燃烧、生料颗粒分解过程共存的特点,提出了相应的计算模型与方法,以CFX4为基础,采用用户软件,二次开发出模拟该现象的工程计算软件,并以工业化中实际使用的5 500 t/d的喷旋管道分解炉为对象,计算分析了炉内的煤粉燃烧、生料分解率在空间上的变化规律,探讨了炉内的湍流速度场及高温火焰燃烧区域、空气组分、颗粒体积浓度等的空间分布特征,指出了进一步优化的方向。Aiming at the coexistence of pulverized coal combustion and raw meal granule decomposition in cementprecalciner, the governing model and computational method were put forward. Based on CFX4 and user＇s interfacesoftware, a working computational program was developed to simulate the above phenomenon. Taking the 5500 t/dejecting-revolving pipe precalciner as a actual example, the rate of pulverized coal combustion and the raw meal decomposition in the precalciner were calculated and analyzed. The space distribution characteristics of turbulent flowand speed field, high-temperatured burning flame field, air composition, particle volume concentration and the influence trend in precalciner were discussed and the direction for further optimization was pointed out.

关 键 词：计算流体动力学 煤粉燃烧 生料分解 数学模型 计算软件 水泥窑外分解 

分 类 号：TQ052.6[化学工程]