催化裂化提升管末端旋流式快速分离系统的研究

STUDY OF A VORTEX ROUGH CUTSEPARATION SYSTEM FOR FCC RISER OUTLET

在实验室冷模装置上开发了一种催化裂化提升管末端气固快速分离系统（快分），即旋流式快速分离系统。它利用气团混合物沿快分头的切向开口喷出时产生的旋转惯性实现高效、快速的气固分离，并通过特殊的气体引出方式进一步增强分离效果和缩短气体停留时间。当提升管内气体线速在６～２０ｍ／ｓ时，冷态下的气固分离效率可达９９％以上。

Study of a gas-solid rough cut separation system for FCC riser outlet, called vortexseparation system, was conducted on a laboratory scale cold model unit. The solid particles can be quicklyand efficiently separated from gas by their inertial difference while the gas--solid flow is ejected from itstangential openings. Through a special withdraw manner of the gas, the gas residence time can be shortened, and the separation efficiency was also enhanced. The total gas--solid separation efficiency under ambient temperature was higher than 99%, when the gas linear velocity was in the range of 6-20 m/s.