The catalytic unit will be shut down for 3 days due to a power outage; how should various positions handle this situation?
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Power will be cut off for 3-4 days due to circuit repairs; how should each shift proceed with the shutdown? Should it be done in the usual manner during maintenance, or by shutting down the equipment? I hope to get your help.
It’s crucial to see what stage of the operational cycle it is in. In the early stages of operation, it is possible to cover the bed. During operation, if the intermediate parameters are good, it is also possible to keep the bed sealed ； If the feed is cut off in the middle, careful consideration is needed. In the later stages of operation, one must absolutely avoid leaving the bed unoccupied. It’s very likely that it can’t be started
The distillation, absorption and stabilization sections as well as subsequent processes must have their pressure reduced, and the material level lowered.
General treatment methods: reacting and allowing the bed to settle, distilling to remove oil, maintaining stability by keeping pressure and liquid level constant, and leaving the unit at rest.
The reaction can be treated with agent removal depending on the bed temperature. If the high-voltage power is turned off, the fan stops operating, and the regenerator is insulated for 3–4 days; it becomes difficult to maintain the temperature.
Can the bed temperature be maintained for 3-4 days? I also want to know how miracles happen.
It’s fine to leave the bed sealed for 3-4 days, but it’s necessary to eliminate all steam and air, or at least keep only a very small amount of them.
What temperature should it be maintained at? If it’s below 400 degrees, it’s not possible to spray the combustion fuel
Temperature isn’t the problem; the issue is that fluidization after bed packing could be a serious problem, which might even lead to shutdowns
For the instrument air that may enter the regenerator, steam conditions need to be properly checked to prevent leaks and to maintain a temperature of over 400 degrees. As for the reactor, attention must be paid to the risk of coking; this risk increases significantly in the middle and later stages of operation.