旋-喷管道式分解炉在不同截面风速下的流场研究  

Flow Field of a Swirling-jet Pipeline Calciner under Different Cross-section Wind Speeds

作　　者：但磊 罗军 柯盛强 高宇蕾 齐砚勇[1] DAN Lei;LUO Jun;KE Shengqiang;GAO Yulei;QI Yanyong(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;Sichuan Lisen Building Material Group Co.,Ltd.,Deyang 618000,Sichuan,China;Mianyang Qinuo New Material Development Co.,Ltd.,Mianyang 621010,Sichuan,China;Mianyang Vocational and Technical College,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]四川利森建材集团有限公司,四川德阳618000 [3]绵阳旗诺新材料开发有限公司,四川绵阳621000 [4]绵阳职业技术学院,四川绵阳621010

出　　处：《西南科技大学学报》2021年第4期31-37,共7页Journal of Southwest University of Science and Technology

摘　　要：采用五孔探针流场测试系统对旋-喷管道式分解炉模型在不同截面风速下的流场进行测量,得到了各测点三维风速,绘制了分解炉在不同截面风速下的轴向、切向与径向速度分布图。结果表明:分解炉的流场主要受三次风的影响,三次风水平进入分解炉后分流为两股风,其中一股风螺旋向上运动,另一股风紧贴壁面先旋转向下运动,与烟室上升气流汇合后,再螺旋上升,并形成一处回流区;分解炉锥部与直筒缩口处存在喷腾效应;随着截面风速的增大,向下运动的三次风越显著,回流区域越大,缩口喷腾效应越明显。A five-hole probe flow field measurement system was used to measure the flow field of the swirling-jet pipeline calciner under different cross-section wind speeds. In this way,the three-dimensional wind speed of each measuring point was obtained,and the axial,tangential and radial velocity distribution diagrams of the calciner under different cross-sectional wind speeds were drawn. The results show that the flow field of calciner is mainly affected by the tertiary air. After the tertiary air enters horizontally the calciner,it is divided into two streams. One stream spirals upward. The other moves downward close to the wall,converges with the updraft of the chamber,and then spirals up and forms a recirculation area. There is a spray effect at the cone of the calciner and the neck of the straight cylinder. With the increase of the cross-sectional wind speed,the more significant the tertiary air moving downward is,the larger the recirculation area is,and the more obvious the necking spray effect is.

关 键 词：旋-喷管道式分解炉 五孔探针 分解炉流场 截面风速 

分 类 号：TQ172[化学工程—水泥工业]