Heating furnace tube wall temperature
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What is the material of the heating furnace in the hydrogenation unit, and what is the maximum allowable wall temperature? Reactor and reboiler?
There are various types of hydrogenation units, such as gasoline hydrogenation, diesel hydrogenation, hydrocracking, and residue hydrogenation. Depending on the actual conditions of temperature, pressure, and the corrosive components of the medium, the materials used for the reactor tubes are typically TP321, TP321H, TP347, and TP347H. The materials for fractionation furnaces are usually 20, P5, and P9. As for the wall temperature, it needs to be determined based on the specific parameters of the heating furnace. The maximum operating temperature for TP321/TP347 is 815°C, for 20 it is 450°C, for P5 it is 600°C, and for P9 it is 650°C. Under the same pressure, the higher the wall temperature, the thicker the furnace tube wall.