What are the differences between axial and axially-radial configurations of the shift reactor in sulfur-resistant shift processes?
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Dear experts, I have a question: In a certain sulfur-resistant shift process, the pre-shift reactor uses an axial shift reactor, the medium-temperature shift reactor employs an axially-radial shift reactor, while the low-temperature shift reactor again uses an axial shift reactor. So what is the difference between axial and axially-radial designs, and what criteria should be used for making the selection?
Pre-transformers and low-transformers have lower operating temperatures and less resistance. The medium-temperature furnace experiences the greatest temperature rise and the highest bed temperature; therefore, using an axial radial design is more appropriate in order to reduce resistance.
But the pre-change furnace temperature rise here is more than 100°C higher than that of the medium-change furnace
It depends on what type of transformation furnace it is – an adiabatic furnace or an isothermal furnace. In short, a preheating furnace is essentially an adiabatic furnace, and it’s normal for its temperature to be a bit higher