Regenerator dilute phase temperature control
Thread Content
What are the methods for regulating the dilute-phase temperature in regenerators, and which of those methods are commonly used and effective?
In principle, it is not desirable to adjust the temperature of the dilute phase, because if the coking in the dense phase can be well controlled, it is difficult for the temperature of the dilute phase to exceed safe levels. Especially in the case of complete regeneration, there is virtually no CO in the dilute phase, so so-called afterburning is less likely to occur. If it is incomplete regeneration, the oxygen must be consumed in the dense phase. Therefore, the first step is to adjust the coking of the dense phase properly. If lean-phase superheating does occur, the common approach is to use lean-phase water spray or steam, provided that the necessary facilities are available.
You must be referring to incomplete regeneration; generally, it’s sufficient to control burning properly. Generally, when the lean-phase temperature rises too high, an oxidizer is added, and it’s sufficient to control the main air volume as well as the rate at which additives are introduced on a daily basis. Our unit also has a dilute-phase water spray, but it has not been used.