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分布板环管内径、导流筒高度和直径、喷嘴内径条件下,测量了反应器内颗粒速度和浓度分布。实验结果表明,上述结构尺寸分别减小,导流筒内的颗粒速度和浓度均有所提高。但是,环隙中的颗粒流动规律并不完全与导流筒内的一致。最后,探讨了窜液量对反应再生效果的影响,推导出其理论控制模型,并进行了模拟计算。
A new apparatus 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. Particles circulate around the draft-tube wall with the help of its gravity and the jet entrained force. Using the cross-correlation technology, the particle velocity and density distribution in the reactor were measured under varying apparatus structures, i.e., changing the height or the radius of the draft-tube, the size of the nozzle and the inner diameter of the looping pipe under the distributing plate. The experimental results show that if apparatus structure decreases in size, the particle velocity and density distribution are both increased in draft-tube. However, the flow pattern of particles in annular space is not always identical with that in draft tube. In addition, the influence of interporosity flow on reaction and regeneration was discussed. An interporosity flow model was proposed and verified by experimental data.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2005年第3期320-326,共7页
Journal of Chemical Engineering of Chinese Universities
