The main air issue in the catalytic cracking reactor-reactor system

This post was last edited by Yinhan Guxing on 2010-5-20 at 18:17. It seems that the main air flow isn’t being supplied to our reactor. . I heard for the first time that main air is introduced into the reactor; main air is just air, containing oxygen. When the feed oil is introduced, doesn’t it catch fire? . Isn’t it funny? .

I’ve never seen the idea of letting air enter the reactor; it’s only used during the startup heating process

Did the guy make a mistake, or is he just following the standard procedure by sending the gas vapor upward through the air flow? It is assumed that wind got into the settler. Is it because the new device hasn’t been turned on yet?

The role of introducing main air into the anti-reformation system: on one hand, it maintains the fluidization of the catalyst bed; on the other hand, it burns off the coke on the catalyst, restoring its activity

This post was last edited by fengdingwen on 2010-5-22 at 12:46. Primary air enters the regenerator to supply oxygen for combustion and to maintain catalyst fluidization. During normal production, a small amount of flue gas is carried into the reactor by the catalyst, as well as instrument purge air that enters through flow control orifice plates; therefore, the dry gas coming from the rear contains a small amount of air. It is essential to ensure an adequate material seal between the two reactors at all times, in order to prevent air and oil-gas mixtures from intermingling and causing serious fire or explosion accidents, especially to avoid large amounts of air entering the sedimentation reactor. During the fluidization tests carried out when a newly built unit is started up for the first time, or during the lining drying phase when an existing unit is put into operation, the reaction settler can be fed with main air and unpurified air; however, after forcing air in and switching the gas seal, it is strictly prohibited for large amounts of air to enter the reaction settler.

Why hasn’t the original poster returned? You must be mistaken. Do the new devices nowadays have a process where the settler burns out? Are we obsolete then?

Dude, is this some kind of joke? Main air is still being fed into the reactor – an explosion is about to happen

Under normal conditions, the reactor is fed with desulfurization dry gas and steam, with no main air. .

Do you mean the pressure difference control of the regenerator and settler? I haven’t heard of main air being supplied to the reactor; in that case, the cracking feedstock would catch fire

What the poster is referring to is probably the startup heating process (before switching to steam air) and the shutdown process (after switching to steam air)