Abstract: The cyclone separator is a key equipment in the catalytic cracking unit, which directly affects the catalyst loss rate and long-term stable operation of the unit, and is also an important component of the energy consumption of the reaction-regeneration system. This article principally introduces the technology of cyclone separators in catalytic cracking regenerators at home and abroad, as well as the research progress on the structure, flow field and performance relationship of cyclone separators based on domestic PV type high-efficiency cyclone separators, and the structural characteristics of the new PLS two-stage cyclone separator.

Key words: catalytic cracking, regenerator, cyclone separator, reduce resistance and increase efficiency, PLS