The temperature at the rear section of the Klaus furnace fails to rise
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The volume of acidic gas is 350 cubic meters, with a concentration of 60%. Air supply: 1.8. Temperature in the front section of the Claus furnace: 1090 degrees; temperature in the rear section: 800 degrees. Temperature at the inlet to the reactor: 234 degrees; temperature inside the reactor: 211 degrees. Temperature at the outlet of the reactor: 235 degrees. The temperature at the front section changes significantly depending on the amount of air supplied ； The temperature in the latter section did not change. I would like to ask what reasons can lead to this situation and how to adjust it. Thank you
What is the current operational load?
The load is low, the acid gas concentration is low, the thermal balance of the system is disrupted, and there isn’t enough heat. . . . I guess that’s the case
60% concentration is still low?
Mainly, the amount of acidic gas is too low and the load is too low.
The key is to determine what the design load of your facility is; it’s not sufficient to consider only the processing volume and concentration. For example, our facility has a capacity of 4,000 tons per year, and it is currently operating under the conditions you have now, but the temperature can still be adjusted as needed.
If the furnace temperature doesn’t rise, nothing else matters. Close the valve to the converter ； Increase the air supply; it would be better if there is gas or hydrogen used for combustion, but if not, the only option is to increase the air supply, with the goal of raising the overall temperature of the furnace first.
Your stove has too high an air supply, resulting in over-combustion
The load and the concentration of acidic gases determine the furnace temperature; in the case of partial flow or mixing methods, it is also possible to adjust the temperature at the furnace inlet, but the temperature in the rear section of the furnace cannot be guaranteed when it is below the design conditions.