Change the bed temperature
Thread Content
In the shaft radial conversion furnace, the inlet temperature of the conversion furnace was previously 270 degrees, the bed temperature was 420 degrees Celsius, and the outlet temperature was around 410 degrees Celsius. After a maintenance shutdown and restart, the inlet temperature of the conversion furnace increased by 7 degrees, the bed temperature rose to 423 degrees, and the outlet temperature reached around 433 degrees Celsius. Could the experts please tell me what the reason is?
I wonder how many temperature measurement points there are in your catalyst bed It seems that the entire catalyst main reaction layer has shifted downward; it’s time to replace the catalyst.
There are four measurement points in total, and the temperatures are essentially the same; there is no downward trend.
There are four measurement points in total, and the temperatures are essentially the same; there is no downward trend.
Has the water vapor ratio changed compared to before? Has there been any change in the active ingredients? How is your inlet temperature regulated? Generally, as long as the carbon monoxide level at the furnace outlet is within the specified limits, it should be considered normal, in my opinion.
The water vapor ratio remains essentially unchanged. The inlet temperature of the converter is regulated through heat exchange with the outlet temperature; all carbon monoxide levels are within normal ranges. The outlet temperature is about 10 degrees higher than the bed temperature, while in another series the outlet temperature is around 10 degrees lower than the bed temperature. I don’t know what’s causing it now.
Can’t the inlet temperature be reduced? It would be best for the poster to draw a simple diagram, so that specific issues can be analyzed individually
The inlet temperature of the converter has increased by 7 degrees, so the temperature inside your converter must be higher than before. The key question is whether the carbon monoxide level at the outlet of the shift reactor decreases when the furnace temperature rises. If it does, it is recommended that you adjust the inlet temperature of the shift reactor back to its previous value (so that the carbon monoxide level at the outlet of the shift reactor meets the design specifications). Otherwise, you can only increase the temperature of the shift reactor in order to enhance catalyst activity; however, be careful not to make the outlet temperature too high, as this could cause the catalyst to sinter. Also, ensure that the outlet temperature does not exceed the design temperature limit of the pipeline material.
Didn’t read the question carefully: L agrees with the expert above – your entry point is too high!
If the carbon monoxide emission levels are within the acceptable range, there should be no major problems; however, it’s possible that there are issues with the instruments, after all, the equipment was shut down for maintenance
It’s a matter of volume; there are also certain reasons related to the water-to-vapor ratio