催化裂化沉降器粗旋风分离器的工作性能  

Working performance of rough-cut cyclone in FCC separator

作　　者：刘书贤[1] 孙国刚[1] 薛淑琳[1] 陈建义[1] 时铭显[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《中国石油大学学报（自然科学版）》2010年第1期153-159,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家'973'重点基础研究发展规划项目(G2005CB22120103);中国石化重油催化沉降器抑制结焦项目(305013)

摘　　要：在直径300mm的催化裂化沉降器粗旋风分离器冷态实验模型上测试入口气速、质量浓度,考察二者以及料腿末端设置重锤逆止阀对粗旋风分离器工作性能的影响。结果表明:固相加入后降低了气流旋转动能耗散,使粗旋风分离器压降降低,料腿排气率增大;提高入口气速有利于减小料腿泄气率、提高粗旋风分离器分离效率,尤其对细颗粒分离有利;随固相质量浓度增大,粗旋风分离器压降降低,分离效率和料腿排气率均有小幅上升;料腿末端安装重锤逆止阀可令料腿泄气率减小3%以上,并提高粗旋风分离器分离效率;针对粗旋风分离器结构特征提出的压降模型计算粗旋风分离器压降精度较高。The influences of inlet gas velocity, solid mass concentration and adding a gravity valve to the dipleg tail on the performance of a rough-cut cyclone with diameter of 300 mm were tested in an FCC separator experimental model. The results show that after adding the solid phase, the loss of swirling energy of motion and pressure drop of the cyclone separator decrease, and the gas discharge of the dipleg increases. Improving inlet gas velocity advantages to decrease the gas discharge of dipleg and increase the separation efficiency of rough-cut cyclone separator, especially for granular particles. Furthermore, with the solid mass concentration increasing, the pressure drop of rough-cut cyclone separator decreases, and the separation efficiency and gas discharge of dipleg increase. The presence of the gravity valve makes the gas discharge decrease by 3% and the separation efficiency improve. The structure-related pressure drop model has good accuracy for calculating pressure drop of rough-cut cyclone.

关 键 词：粗旋 气速 质量浓度 重锤阀 

分 类 号：TQ021.1[化学工程]