FCC regenerator temperature
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What is the upper limit for the lean-phase temperature in the regenerator? Is 740℃ potentially dangerous? (Coaxial full regeneration – how can secondary combustion be effectively controlled?) I hope experts can provide guidance! Thank you!
Our dilute-phase temperature ≯700
Look at the design issues of the regenerator cyclone separator; it’s generally 720 (or 730°C?) ), exceeding this temperature can cause deformation of the cyclone separator, carbonization of the mesh screen, and deterioration in the performance of the lining~~~
The super-temperature in the lean phase of the regenerator mainly affects the three-spinners and the flue gas turbine; generally, the inlet temperature of the flue gas turbine is not allowed to exceed 680 degrees. High temperatures can also cause the centrifuge to deform. I remember there was an overheat issue that burned off the three spindles. It’s the high temperature that prevents the metal from being able to support the triple spin, which leads to a shutdown. To address overheating, one method is to add an oxidizer, and the main air flow can also be adjusted appropriately. Cooling can also be achieved using flue gas desuperheating steam and desuperheating water.
There must be a certain level of material on the plug valve to provide a bed for CO combustion. Another issue is the distribution of the catalyst to be used.
Burn out the equipment. Accelerate equipment aging
Our dilute-phase temperature is ≯710; exceeding 720 is strictly prohibited
Data from domestic and international sources indicate that a temperature range of 690–720 is appropriate; setting a lower limit for this temperature is a good practice. The temperature for the flue gas treatment system should not exceed 700. As for the specific temperature required in your case, it depends on the type of catalyst used as well as the vanadium content in the raw materials. The melting point of vanadium oxide is 675. Just my humble opinion; please feel free to correct me. Thank you.
It depends on whether it’s low-oxygen or high-oxygen; in a low-oxygen environment, we can’t reach high heights. Are the rarefied image temperatures high, or is it higher above the external heat inlet?