The rapid separator mainly includes the coarse cyclone separator, the pre stripping plate coarse spin fast separation, the pre stripping swirl type fast separation, the dense phase circulation pre stripping fast separation. The improved cyclone separator has high efficiency, wide application range, short stay time of oil and gas in the settler, simple structure, large elasticity and easy operation. There is a lot of oil and gas removal when discharging the legs. The structure of the pre stripping plate cyclone separator is simple, the quick separation effect is good, and the oil and gas flow from the upper port of the coarse spin, which makes the oil and gas entrained by the catalyst decrease greatly. The pre stripping swirl quick separation shortens the retention time of cracking oil and gas in the settler, reduces the heat conversion rate obviously, effectively suppresses the hydrogen transfer reaction and the thermal cracking reaction, solves the coking problem of the settler, improves the yield of the target product and the octane number of catalytic gasoline, ensures the long-term safe operation of the unit, stable and reliable operation, high separation efficiency of gas and solid, and anti coking property Excellent characteristics.<br>
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