Catalytic flue cooling water, cooling steam
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Are the cooling water and cooling steam for catalytic cracking flue gas still in use in your plant (at the outlet of the flue gas collection ducts, at the inlet of the three spinners)? If the inlet temperature of the triple spin is too high, how do you control it? I hope to receive guidance from all the teachers. Thank you!
Ours has never been put into use. When the inlet temperature of the triple rotor is excessively high, it is usually due to backburning, and it can be handled as a backburning issue.
1. Our older units were equipped with systems for injecting water and gas in a dilute phase inside the regenerator, as well as for injecting water and gas into the flue gases; these systems were activated when overheating occurred. In particular, the injection of substances in a dilute phase into the regenerator had a significant impact on the catalyst, and they are no longer used today. 2. Our units built in 2008 did not have such systems; we use partial regeneration, and the main air flow rate is adjusted to control overheating
Using cooling water can cause the partition to deform. Using cooling steam is possible. It is controlled in stages; the cooling water must have blind flanges installed and must not be used.
We don’t undergo complete regeneration; there are no rumors, so it’s easy to control. If the temperature exceeds the limit, you need to determine in which direction this is happening and what the structure inside the regenerator is like; making the necessary adjustments during modification is the only proper solution
In the newly designed units, the flue gas for oxygen-enriched regeneration no longer requires cooling water or steam, whereas those for oxygen-depleted regeneration, which include carbon monoxide boilers, do require cooling water or steam.
Good idea! Teacher! What is the difference between afterburning and secondary combustion? How should each of them handle it?
Sometimes, when the raw material changes, the regenerator faces a high burning load and the raw material contains many impurities, making it difficult to control secondary combustion and afterburning (the oxidizer only provides temporary relief; no matter how the main air flow is adjusted, it remains high, sigh!) ）