摘要
为考察大型FCC催化剂制备喷雾干燥塔内部流场对催化剂性能的影响,运用欧拉-拉格朗日模型,建立了50 kt/a大型喷雾干燥塔两相流CFD模型。通过对大型喷雾干燥塔的CFD模拟计算,得到了较详细的大型喷雾干燥塔内流场信息,如流速分布、温度分布及颗粒运行轨迹等。流速场分布数据表明,气相在塔中央流速较快,左右两侧各有漩涡生成,但是并不完全对称。从喷雾干燥塔的参数优化过程研究结果可以得到考察范围内较优的喷枪数目和喷雾角度。
In order to investigate the influence of the internal flow field of a large FCC catalyst preparation spray dryer on the performance of the catalyst,a 50 kt/a two-phase flow CFD model was established using the Euler-Lagrange model.The detailed flow field informations of the large spray drying chamber,such as the flow velocity patterns,temperature distribution and solid particles trajectories,were obtained through the CFD simulation.The velocity field distribution data showed that the gas phase flows faster in the center of the chamber,and vortices are generated on the left and right sides,but they were not completely symmetrical.The optimum number of spray nozzles and spray angle can be obtained from the study of parameter optimization process of spray drying chamber.
作者
秦娅
吕庐峰
侯栓弟
朱振兴
Qin Ya;Lv Lufeng;Hou Shuandi;Zhu Zhenxing(SINOPEC Research Institute of Petroleum Processing,Beijing 100083)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2019年第4期59-63,共5页
Petroleum Processing and Petrochemicals
关键词
喷雾干燥
催化裂化
催化剂
数值模拟
spray dryer
fluid catalytic cracking
catalyst
numerical simulation
