Discussion on Converting the Paraffin Oil Hydrogenation Unit into a Diesel Hydrogenation Unit
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As the title indicates, converting a wax oil hydrogenation unit into a diesel hydrogenation unit requires considering whether the catalyst meets the required standards. The processing capacity must be adjusted based on the space velocity, and it is also necessary to ensure that the heat load of the reaction heater is sufficient, taking into account both the heat load during normal operation and the temperature requirements under abnormal conditions； For the distillation section, it is necessary to consider whether the load of the existing process is sufficient; whether diesel will be obtained from the bottom of the tower plus the side streams, or only from the bottom of the tower, and whether the load of the light components at the top meets the required levels. That’s all I can think of. What else should be considered?
The stripping efficiency of the stripper, whether it’s easier to operate a distillation column or to manage the discharge from its bottom – controlling the bottom temperature is sufficient. The key factor is whether the catalyst can function effectively; the other processes are more or less similar. The parameters still need to be determined through experimentation. It’s best to have a design firm perform mass balance calculations and use software for simulation to determine the appropriate parameters; the complexity involved is roughly equivalent to that of redesigning the entire system