Principles for handling reaction accidents

The first rule isn’t absolute, right? In normal production, when the catalyst is flowing properly, it’s possible to operate with a lower amount of material stored in the stripping section, or even without any storage at all. We have encountered this situation before: when the feed stop valve could no longer operate in automatic mode for some reason, we set it to manual full-open position. The inventory level in the stripping section then showed as 0. We continued to operate in this way for 2 or 3 months, waiting until shutdown for maintenance. But a prerequisite for this was that the catalyst had to be flowing properly, that is, the catalyst kept flowing within the cycle between the two reactors

On the second floor, which is greater: the reaction pressure or the regeneration pressure? ? Aren’t you worried that the main wind will reach the settler? ? :funk:

Didn’t I say it already? The prerequisite is that the catalyst must be circulating properly, and with all the raw material stop valves open, the catalyst will keep flowing downward; the circulation rate is sufficient

1. Under any circumstances, the catalyst reserves in the reaction regeneration systems must not exhaust each other. 2. A fluidizing medium must be introduced into the reaction regeneration system to prevent collapse or a dead bed. 3. Once the main air supply is interrupted, the feed must be stopped immediately, and the combustion oil injection must be halted. 4. With feed present, the outlet temperature of the riser must not be lower than 460. If it cannot be lifted immediately, the feed should be stopped. 5. When the main air supply is stopped and the feed is cut off, the temperature of both reactors must remain above 400; if it drops below this level, the catalyst should be removed. 6. When there is catalyst circulation in the reaction regeneration system, oil slurry circulation must be maintained. If the slurry circulation is interrupted, it should be switched to single-regenerator fluidization or, depending on the circumstances, the catalyst should be discharged. 7. In the event of severe overheating in the regenerator or a fire in the reaction system, the feed should be cut off. 8. In the reaction regeneration system, even if the feed is cut off and the main fan stops operating, as long as there is catalyst still in the system, the backblowing air and loosening air (steam) must continue to be supplied without interruption.

The LZ consciousness does not allow two devices to be interconnected

Yeah, definitely not allowed for the two devices to interact with each other; that’s beyond doubt. What I’m talking about are extraordinary measures to be taken in extraordinary times; of course, they carry a high level of risk. People get scared at the slightest accident, and every time there’s a minor incident, two devices have to be shut down

What will happen if the oil paddle circulation stops, but the catalyst is still flowing? Thank you!

The method used on the 2nd floor is indeed terrible, but in times of crisis such measures can be taken; however, under normal production conditions it is absolutely not allowed to allow the pressure to drop to zero. It was like once when there was poor circulation in the startup inclined tube of our system; the solution adopted was to use the main air direction precipitator to reverse the flow, which was very dangerous. But it worked in the end. However, such things should be done as little as possible – one incident like that can have serious consequences! This post was last edited by onewolf on 2009-3-20 10:39.]