液固环流反应器的反应-再生系统操作分析及导流筒模拟  

The Operation Analysis of the Reaction-Regeneration System in Liquid-Solid Loop Reactor and the Simulation of Draft Tube

作　　者：郁亮[1] 汪洋[1] 高金森[1] 徐春明[1] 

机构地区：[1]石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《高校化学工程学报》2004年第6期690-695,共6页Journal of Chemical Engineering of Chinese Universities

摘　　要：液固环流反应器以导流筒作为反应室,环隙作为再生室,从而将反应-再生系统集成于一个反应器之中,颗粒分别依靠射流卷吸力和自身重力围绕着导流筒壁上下循环。今采用互相关技术在不同的操作条件下,测量了反应器内颗粒速度和浓度分布。实验结果表明,反应液流量提供了颗粒循环的主要动力,再生液流量与其配合是实现环隙逆流的关键,松动液流量则能改善导流筒内颗粒流化效果。最后,还对反应器关键部位——导流筒内的颗粒输送进行了模拟,以利于将来进一步对该新型反应器的开发与设计。A new system was established by integrating the reactor and the regenerator into a liquid-solid jet loop container, in which the draft-tube was used as the reactor and the annular space as the regenerator. According to the gravity and the jet entrained force, the particles make circulation around the draft-tube wall. The solid velocity and fraction in the reactor were measured by the cross-correlation technology under different operating conditions. The experimental results show that the inlet liquid flow in the draft-tube supplies the major power for particle circulation, and a perfect match of the regeneration flow in annular space with it is very crucial to realize the countercurrent contact in the annular space. Moreover, the agitating liquid improves the fluidization quality of the particles in the draft-tube. Finally, the particle transportation in the draft-tube, which plays a crucial role in the whole reactor, is numerically simulated and it will be helpful for the further development of this new type reactor.

关 键 词：环流反应器 液固反应器 反应 再生 固液的流动规律 

分 类 号：TQ052.5[化学工程] TQ051.13