Regarding the booster of the catalytic device
Thread Content
Isn’t the main fan of the catalytic unit used to supply burner air and fluidization air? Why is a supercharger needed anyway? What is the function of a supercharger?
Pressurized air is generally used for the fluidization air in the raw catalyst sleeve, the conveying air in the semi-regenerative circuit, and the lift air for the fluidization of the external heat exchanger; all of these applications require higher pressure in order to function properly, or to function more effectively.
Pressurized air is generally used in applications where the catalyst density is high, such as the sulfidation air for external heat exchangers, the fluidization air for the dense-bed regenerator, and the conveying air for semi-regenerative inclined tubes, as it helps to promote catalyst fluidization more effectively.
My unit is of the burned-cylinder regeneration type, with pressurized air used for external extraction and secondary fluidization. The pressure of the pressurized air is higher than that of the main fan, in order to facilitate better fluidization; however, it is no longer in use. Moreover, some refineries have also shut down their boosters.
Since it can be disabled. In other words, it’s not necessary; as long as the main air volume is sufficient, that’s enough. The booster is only used as a backup in special situations.
Our unit burned out due to the use of a booster pump for secondary air supply!
The pressure of the main air is generally around 0.2 MP, while it can reach over 0.4 MP after passing through a booster. The pressurized air is used for external heat extraction and fluidization; if the air pressure is too low, external heat extraction cannot take place.
In the past, industrial air was used for backblowing and loosening purposes in these two devices. Later, with the addition of internal and external heat exchangers, the amount of industrial air required became too large; therefore, a booster was installed specifically to facilitate fluidization and lift within the external heat exchanger. More air was also used for other loosening purposes.
A booster is used to increase air pressure; it is primarily employed for regenerating air in large systems, as well as for air required in sleeve systems and for external heat extraction. Due to the high volume of air needed, smaller air compressors are not capable of providing sufficient volume and pressure
As a supplementary note, when I went to the Luoyang branch to talk with the masters, I heard about another method that can be used for pressure regulation in regenerators. But have any of you applied this innovative approach in practice? :lol