In the hydrogen production unit, after undergoing adiabatic hydrogenation, zinc oxide desulfurization, and ultra-refined hydrogenation reactions, does the temperature drop from 380°C to 340°C?
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They are all exothermic reactions, so why does the temperature drop? Is there something wrong with our PID diagram?
Is there a temperature sensor inside the reactor? There should be a temperature rise between the inlet and the inside of the reactor; the temperature drop at the reactor outlet may be due to heat loss through insulation issues. For example, if the reactor skirt is not insulated, heat transfer will lead to heat loss, and the same applies if the lower head is not insulated
Without insulation on the lower head, there will also be heat loss
After hydrogenation of the feedstock, zinc oxide is used for desulfurization; under normal conditions, the temperature rises slightly, and this depends on the impurities present in the feedstock. As mentioned above, it may also be related to the quality of insulation around the reactor and pipes. It is also recommended to check whether the thermocouple is measuring accurately