Temperature rise in the hydrogenation reactor
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I would like to ask why local coking of the hydrogenation catalyst leads to an increase in the reactor bed temperature
How can it be determined that the excessive temperature rise is caused by catalyst coking?
If there is a deviation in the flow of locally coked material, the temperature of the reactor bed will increase
I just want to know why an offset flow causes an increase in the bed temperature
The presence of localized coking in the catalyst indicates that the density of the catalyst was uneven during filling. The higher the temperature, the greater the radial temperature difference in the bed layer, and the effect of cold hydrogen will not be very good either. Control the low point of the temperature in the upper bed layer!
After coking, the catalyst becomes compacted, reducing the space through which the material can pass; as a result, heat cannot be carried away by the circulating hydrogen, leading to continuous heat absorption and localized overheating