Problems with finned tubes in the convection section of hydrogen production converters?
Thread Content
During normal operation, the heat exchange efficiency in the convection section of the hydrogen production converter is poor. How should this be addressed? No ash removal device is installed in the convection section; if online treatment isn’t possible, how should it be cleaned after the plant stops operating? Do I have to replace it with a new one? That’s not a waste; please share!
The dry gas generated by this unit without a dust removal device, when using finned tubes, requires comprehensive consideration of the associated side effects
It’s high-pressure gas being burned! Can’t it get dusty?
It shouldn’t be possible; if there are any, it’s just a very small number that doesn’t need to be considered.
There is sulfur accumulation in the air preheating section at the end of the convection zone of the converter; low temperatures lead to sulfur deposition. This issue has been cleared during maintenance. Since the temperatures in other sections are higher, the likelihood of sulfur formation there is low. But if ash accumulates, how should it be removed? Replace the convection section?
No need; ash should account for only a very small fraction and can be ignored. Your air preheaters must be severely corroded! It’s not just the issue of low smoke exhaust temperature
It’s not that serious either; it’s just that if dust builds up, the heat transfer efficiency drops and energy consumption increases. Let’s see if there are any ways to reduce energy use!
Of course there is; the plan needs to be determined based on the specific device
Could you explain in detail? Is it sulfur corrosion or sulfur accumulation? ?
There’s also solid sulfur during maintenance! It can be cleaned during maintenance, but since it is a plate heat exchanger, it is not easy to clean!