关键词: 气固分离器, 分离效率, 压降

Abstract: 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.

Key words: gas-solid separator, separation efficiency, pressure drop