同时，提升管中的油气反应时间为2—4s，反应时间过长则会增加二次反应，

At the same time, the oil and gas reaction time in the riser is 2-4s. If the reaction time is too long, it will increase the secondary reaction and increase the output of gas and coke. Therefore, a gas-solid rapid separation device is installed at the upper exit of the riser to make Oil gas and catalyst can be separated quickly, reducing secondary reactions. There are various forms of quick separation devices, such as umbrella hat-shaped and T-shaped components. The riser outlet of the device adopts the three-lobe type quick separation in the 1980s, as shown in Figure 2. The main disadvantage is that the backmixing phenomenon is serious, and the primary separation efficiency of gas and solid is only about 90%, and the residence time of oil and gas in the settler is too long. The average residence time is up to 20s. The catalyst and the oil and gas continue to react in the upper part of the settler, resulting in excessive thermal cracking, and the yield of coke and dry gas is high, causing serious coking in the settler and gas collection chamber. The stripping steam consumption in the lower part of the settler is large, and the effect of the spent agent stripping is not ideal.

At the same time, the oil and gas reaction time in the lift pipe is 2-4s, the reaction time is too long will increase the secondary reaction, so that the gas and coke production increases, so in the upper exit of the lift pipe to set up gas-solid rapid separation device, so that oil and gas and catalyst can be quickly separated, reduce secondary reaction. Rapid separation devices come in a variety of forms, such as umbrella cap-shaped, T-shaped components, etc. Device lift pipe export using the 1980s three-leaf type fast division, see Figure 2, the main disadvantage is the phenomenon of remixing serious, its gas solid separation efficiency of only about 90%, oil and gas in the sediment stay time is too long, the average stay time of 20s, catalysts and oil and gas in the upper part of the sediment continue to react, resulting in excessive thermal cracking, coke and dry gas yield is high, so that the sink and gas chamber coking serious. The lower steam consumption of the lower part of the settler is large, and the effect of the to-be-biopic is not ideal.

At the same time, the reaction time of oil and gas in the riser is 2-4s. If the reaction time is too long, the secondary reaction will be increased and the output of gas and Coke will be increased. Therefore, a gas-solid rapid separation device is set at the upper outlet of the riser to quickly separate the oil and gas from the catalyst and reduce the secondary reaction. There are various forms of quick separation devices, such as umbrella cap shaped and T-shaped components. The outlet of the riser of the unit adopts the trefoil type fast separator in the 1980s, as shown in Figure 2. The main disadvantage is that the backmixing phenomenon is serious, the gas-solid primary separation efficiency is only about 90%, the residence time of oil and gas in the settler is too long, the average residence time is up to 20s, the catalyst and oil and gas continue to react in the upper part of the settler, resulting in excessive thermal cracking, high coke and dry gas yield, which makes the settler stable And serious coking in gas gathering chamber. The steam consumption in the lower part of the settler is large, and the stripping effect of the Regent is not ideal.<br>