Regenerator combustion oil nozzle protection steam replacement protection air
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Regenerator combustion oil nozzle protection steam replacement protection air – let’s discuss the advantages and disadvantages. Generally, the combustion oil nozzles in catalytic devices are not prone to clogging. However, nozzles protected by steam may get clogged, mainly because changes in steam temperature and pressure can lead to the formation of water, which then causes clogging due to interaction with the catalyst and sludge. Accounting for wind use is considered from the perspective of energy conservation and consumption reduction.
It should be feasible, but why doesn’t anyone use wind?
Reply to 1# jbcyf: Generally, the combustion oil nozzles in catalytic units are protected by steam. Since the protective steam is continuously flowing, clogging is unlikely to occur. Using unpurified air sometimes also contains water, so it doesn’t necessarily prevent blockages. As for energy savings, at most two sets of burners are used in the regenerator, and the protective steam enters the nozzle after passing through a flow control orifice, resulting in low steam consumption.
I agree with the reply from the 3rd floor; the combustion oil nozzles in our catalytic units are also protected by steam. Furthermore, the protective effect of steam is better than that of unpurified air.
The combustion oil nozzles in our catalytic unit are first protected by steam, and then by air. However, it was later found that the protective steam caused water to mix with the catalyst and sludge, so we switched back to using air for protection (all related processes remain unchanged). Unpurified air sometimes contains moisture as well; nevertheless, dehumidification is enhanced prior to its entry into the unit. As a result, the moisture content in the air remains significantly lower than that in steam.
In the north as well, the wind can easily cause freezing, which should be easy to understand. Moreover, atomization and protection have a warming effect, something that cannot be achieved with wind.
Use air when deactivating; switch to steam when activating
If the fuel burner nozzles are not in use, they can be blown back with air, but steam is preferable for atomization. It is not recommended to use air, as several systems are connected together. If there’s any operational error, steam might enter the non-purified air system, which would be problematic. Besides, the normal steam consumption is very low
Have you considered using superheated steam?
Personally, I believe that steam should be used under normal circumstances; otherwise, the presence of water may cause the catalyst to break apart
I think it’s better to use steam in normal operations. As the friend mentioned above, in order to prevent different systems from interfering with each other, blind flanges are often used to isolate systems that aren’t in use. When the bed temperature drops and normal adjustments aren’t sufficient to address the issue, we have to use fuel for combustion; if we were previously using air, then we’ll need to remove the blind flanges before resuming operation, which undoubtedly delays timely handling of the problem. As for concerns about water entering either system, there’s actually no need to worry about that, as we can easily enhance drainage before the fluid reaches the nozzle...