My two devices seem to be connected to each other. Is it dangerous?

Not too important. . . The increase in N2 content is not necessarily caused by the cross-connection of the two devices. . . When the pressure of the settler increases, due to the automatic adjustment of the differential pressure between the two devices, the regenerator will also be automatically adjusted to maintain the stability of the differential pressure. . . In the catalytic dry gas, if the change in nitrogen content increases, assuming that laboratory errors are excluded, it may also be due to the decrease in other components, resulting in an increase in the volume fraction of nitrogen. . . :lol

Also, the regenerant cone is not well degassed and brought to the reaction. Has the CO2 content also increased?

second floor: The pressure difference between my two devices is not automatically controlled. Is yours automatically controlled? Then there will be no pressure difference alarm on your self-protection. What is your dry gas nitrogen content? third floor: Thank you, brother, for broadening my mind. I will do some carbon dioxide again.

Maybe I am a fool, but I feel that the pressure difference between the two devices cannot be automatically controlled. If automatic control is to be achieved, either the processing volume will fluctuate significantly, or the main air volume will fluctuate significantly, which will affect stable production.

Your device is normal, and the control system of the differential pressure between the two devices is also very good. Backflow will not occur at this time. The two devices are originally connected in series and need to maintain differential pressure and forward circulation. The regenerant degassing effect is not good and needs to be dealt with during normal maintenance.

Our two devices once passed through each other, causing the regenerator to run out and lose the catalyst. The nitrogen content in the oil and gas was high, which was quite dangerous.

My device has automatic differential pressure control and sets high and low alarms. . . Without differential pressure automatic control, the main operator at the response position would have few opportunities to take his eyes off the computer DCS. . . Ha ha. . . In terms of recommended settings, it is still very useful and can ensure the safety of production and equipment. . . Or, like you, only set up a differential pressure alarm and rely on the automatic pressure control of the settler and regenerator for manual control. . . This requires skilled workers. . . :lol

The differential pressure of the two devices is automatically controlled and does not connect to the main wind. . . The regenerator voltage control circuit controls the double slide opening. . . The settler pressure control circuit controls the split-top butterfly valve. . . Then intervene in the above two control loops respectively with a given differential pressure value. . . During the initial start-up, when instability occurs, the differential pressure automatic control can be released and the above two channels can be manually adjusted, or the automatic control can not be released. . . :lol

The problem is not big. It should be that the regenerant is not degassed well. As long as the differential pressure is normal, the operation will be fine. Because the pressure drop between the two valves is variable, it is normal for the pressure to rise simultaneously.

“”What does "" the pressure drop between the two valves is variable" mean? Go back to the 9th floor: Thank you for your advice, but my device is not very stable. Sometimes the raw material contains water and the settler pressure is extremely high. The butterfly valve at the top of my fractionation tower is kept fully open without throttling. I rely on the reverse movement of the air compressor or the speed of the air compressor to adjust the settler pressure. To be honest, I really don't dare to set the differential pressure automatically. Frequent switching of the double-action slide valve will cause pressure fluctuations in the regenerator, which will damage the main fan. The throttling of the split-top butterfly valve is also afraid of the inlet flow of the air compressor, and unstable pressure will damage the air compressor. I am a local refinery, haha, let him call the police. I guess my friend is from a large refinery. The nature of the raw materials and the processing volume are very stable. I am envious. Oh, I'm sorry, you are a woman, haha, I don't want to be a man.

If coaxial catalytic devices are interconnected, they should occur in the stripping section or at the upper part of the standpipe to be generated. You can check whether the N2/CO2 ratio in dry gas and the N2/CO2 ratio in regeneration flue gas are similar? Observe again whether the density of the regenerated riser has changed significantly from before? Is it possible to determine whether there is crosstalk? If they are cross-linked, it is necessary to strengthen the observation of the amount of flue gas in the dry gas to see whether there is a development trend and the speed of change. Generally speaking, it is caused by factors such as loose points and wear. The problem is not serious during the normal start-up stage, but special attention should be paid during shutdown.

If it is really a cross-talk, it is very dangerous and should be avoided.

If mutual channeling is very dangerous, in addition, you can also judge whether the two devices are channeling each other based on whether the smoke volume becomes smaller and the double slide opening.

We have also encountered this situation before, and the problem was solved by increasing the storage capacity of the stripping section.