按一定掺炼比例混合后的新鲜原料与雾化水蒸气在进料喷嘴内被混合雾化成小液

The fresh raw material and atomized water vapor mixed in a certain mixing ratio are mixed and atomized into small droplets in the feed nozzle and enter the bottom of the riser to contact the high-temperature regenerated catalyst. The oil droplets immediately vaporize and cracking reaction occurs on the surface of the catalyst. The oil gas stays in the riser for 2-4s, and finally enters the settler after simple gas-solid separation through the rapid separator at the outlet of the riser at a high linear velocity of 13-20m/s. In the upper part of the settler, the mixed gas of oil and gas and steam carrying a small amount of catalyst passes through the secondary cyclone separator, enters the gas collection chamber, and enters the fractionation system through the outlet at the top of the settler.

According to a certain proportion of mixing of fresh raw materials and atomized water vapor in the feed nozzle is mixed into small droplets into the bottom of the lift pipe and high temperature regeneration catalyst contact, oil droplets immediately vaporized and cracking reaction on the catalyst surface, oil and gas in the lift pipe stay time of 2-4s, and finally 13-20m/s high line speed through the lift pipe outlet of the rapid separator for simple gas solid separation into the subsidence. At the upper part of the settler, a mixture of oil and gas carrying a small amount of catalyst enters the gas chamber through a secondary cyclone separator and into the fractionation system through the top outlet of the settler.

The fresh raw material mixed according to a certain mixing proportion and atomized water vapor are mixed and atomized into small droplets in the feed nozzle, and then enter the bottom of the riser to contact with the high-temperature regenerated catalyst. The oil droplets vaporize immediately and cracking reaction occurs on the surface of the catalyst. The residence time of the oil and gas in the riser is 2-4s, and finally, the oil and gas flow through the fast separator at the outlet of the riser at a high speed of 13-20m / s After the gas-solid separation of the single phase, it enters the settler. In the upper part of the settler, the mixture of oil gas and steam carrying a small amount of catalyst enters the gas gathering chamber through the secondary cyclone separator and enters the fractionation system through the top outlet of the settler.<br>