基于离心与惯性作用的新型气固分离装置的结构

后置烧焦管出口的气固分离装置是实现后置烧焦管式组合再生工艺的关键设备之一. 在对气固分离机理系统分析的基础上，开发了一种基于离心与惯性协同作用机理的新型气固分离装置. 以滑石粉为物料，在相同实验条件下对9种不同结构尺寸的分离器的分离效率和压降进行了实验测定. 结果表明，不加挡板、不加折边、开缝宽度相同、无因次排气管径在0.50~0.55范围内的结构比较合理.

Structural Optimization of a Novel Gas-Solid Separator Incorporating Inertial and Centrifugal Separation

As the feed stuffs of fluid catalytic cracking (FCC) become increasingly heavier, a new regeneration technology combining post coke-burning riser and conventional turbulent bed regenerator has been developed in this study. One of the key components of this technology is the gas-solid separator located at the outlet of the riser regenerator, having the advantages such as simple structure, high separation efficiency, low pressure drop and flexible operation. To meet these requirements a novel gas-solid separator incorporating inertial and centrifugal separation was investigated in detail. Talcum powder was employed as solid medium. Separation efficiency and pressure drop were experimentally tested in nine separator configurations under the same gas velocity and particle concentration at the separator inlet. The results show that a reasonable scheme is as follows: no baffle to block the solid circulation, no hem at the slots to obstruct gas entering the centre pipe, and dimensionless radius of centre pipe between 0.50 and 0.55.