Catalytic cracking riser rapid separation technology

Currently commonly used in our country are: 1. Improved rough cyclone separator (referred to as rough cyclone) ； It has high gas-solid separation efficiency, wide application range, short residence time of oil and gas in the settler, simple structure, high elasticity and easy operation. A large amount of oil and gas are discharged when the material legs are discharging. 2. Pre-stripping baffle type rough cyclone separator (FSC) ； The structure is simple and the quick separation effect is good. The oil and gas flow out from the upper port of the rough rotation, which greatly reduces the amount of oil and gas entrained downward by the catalyst. 3. Pre-stripping cyclone quick separation (VQS) ； The cyclonic rapid separation system (VQS) shortens the residence time of cracked oil and gas in the settler, significantly reduces the thermal conversion rate, effectively inhibits the hydrogen transfer reaction and thermal cracking reaction, solves the problem of coking in the settler, increases the yield of the target product and the octane number of the catalytic gasoline, and ensures the long-term safe operation of the device. The operation is stable and reliable, with high gas-solid separation efficiency and excellent anti-coking performance. 4. Fast separation of dense phase circulation (CSC). Resolved security issues with the device ； Increased device throughput ； Product distribution improved, coke yield reduced, light oil yield increased ； The stripping effect of the to-be-grown catalyst is improved, and its hydrogen-to-carbon mass ratio decreases. ； Due to the decrease in coke yield and the decrease in the hydrogen-to-carbon ratio of the regenerated catalyst, the coke load of the regenerator decreases and the catalyst regeneration effect improves. The carbon content of the regenerated catalyst remains unchanged when the processing capacity increases. This post was last edited by lxzzl on 2009-3-7 11:17 ]