Catalytic cracking spray combustion oil

The phenomenon may be that diesel has been sprayed for a long time, the temperature of the regenerator has not risen, and the temperature drop at local measurement points has increased. The main consequence is damage to the catalyst; when a large amount of water enters, the catalyst will suffer thermal failure and break down, resulting in significant losses. Personally, I think a small amount of water isn’t a problem, but it’s still important to carefully check and remove any water before spraying oil – this is a necessary step.

When burning oil, water is present, but the amount of water is not large; there will be no situation where ignition fails. Moreover, before injection, the burning oil is usually degassed of water

This post was last edited by chengkang on 2010-4-26 at 14:25. Water must be removed before injecting fuel; otherwise, water entering the regenerator will cause fluctuations in temperature and pressure, and it will also lead to the hydrothermal deactivation of the catalyst, affecting its service life. Also, when injecting oil, don’t forget to turn off the steam supply to the nozzles; otherwise, steam can mix with the oil. Re-enable the steam supply after injection to protect the nozzles

I agree with what was said above; it shouldn’t cause severe water accumulation. Dehydrate it promptly once it’s detected, and pay attention to various temperatures. As long as there is spraying, it’s fine – the impact won’t be significant, unless the water accumulation is severe in which case it becomes a problem. :)

This post was last edited by chengkang on 2010-4-26 at 14:27. There shouldn’t be much water in the fuel used for combustion; generally, the oil used for sealing machine pumps and the fuel used for combustion come from the same pump. If there is a large amount of water present, the first effect will be vacuum formation in the heavy oil pumping unit. A small amount of water entering the regenerator won’t have a significant impact. When fuel is injected for combustion, which is an emergency situation, it’s unlikely that such water will cause any problems. Friends on the 4th floor, do you also use steam in the fuel injection nozzles during normal production? Wouldn’t that have an even greater impact than the effect of burning oil with water? Burning oil occurs over a short period of time, whereas steam is injected into the dense phase over a longer period. Normally, burners equipped with oil use backflow air; when oil is being burned, steam is used for atomization.

Floor 6 is supported; we later changed it to reverse blowing, as we were concerned that continuous steam injection might affect the catalyst. Steam is used for atomization during spraying, but sometimes atomization with steam isn’t necessary, as this can otherwise lead to interference between the different processes

It will cause a sudden increase in the pressure of the regenerator, and the regeneration temperature will also decrease, affecting the coking effect of the catalyst. .

Pressure fluctuates significantly, and in severe cases this can cause the catalyst to sinter into large lumps.

There shouldn’t be too much water, otherwise it will harm the catalyst

When the bed temperature drops too rapidly and cannot be maintained, burning oil is injected. It is essential to dehydrate the pipelines before opening the nozzle; otherwise, thermal collapse of the catalyst will occur, and the bed temperature will continue to drop. Excessive water content can also lead to feed interruption! Also, the pump pressure must be set to the specified scale; otherwise, the pump will stop working, and the catalyst will flow back into the pump!