Coaxial stripping steam
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For 120-coaxial systems, what is an appropriate amount of stripping steam? Which parameters need to be considered?； What is an appropriate level control for the settler, and which parameters need to be considered? We use low-pressure steam; what about you? Does medium-pressure steam have advantages over low-pressure steam, and are these advantages significant? I hope to get some guidance from all the teachers! Thank you!
Our stripping steam is medium-pressure steam. As for the amount, it should be adjusted according to the operating conditions, as long as it does not affect fluidization. I think as long as the steam doesn’t contain water, there’s not much difference between medium pressure and low pressure.
The amount of stripping steam should be adjusted by considering the temperature of the regenerator and its carbon content; I don’t know the exact figures, so I’ll just wait**
In the early days, 1.0 Pa of steam was used, mainly because the steam temperature was only 200–250°C. Later on, in many cases, steam at 1.0 Pa was superheated to 400–450°C, which improved the stripping effect to some extent; there were also cases where steam at 3.5 MPa was used after depressurization, though that was a bit of a waste.
1. We use low-pressure superheated steam at a temperature of around 350 degrees, and this has its advantages; a higher temperature helps to prevent a significant drop in the temperature inside the settler. 2. The amount of stripping steam can be determined according to design requirements. If you think it’s too much, you can reduce it slightly and then adjust it several times to see how the bed temperature of the regenerator changes