What should be followed for hydrogenation-based increase/decrease operations?
Thread Content
What principles should be followed, and why? Please provide an answer
The product has passed testing and operates smoothly.
Under normal production conditions, the handling volume of the unit is determined by the workshop’s monthly target (monthly processing volume), and it is also influenced by the material balance among the various units within the company. In abnormal situations, such as a disruption in the supply of new hydrogen and an inability to maintain system pressure, the reaction system needs to have its temperature and volume reduced. As for by how much, it is sufficient to reduce them to above 60% of the normal operating level in order to maintain system pressure, while waiting for the hydrogen supply to be restored ； In short, it is influenced by various factors, too many to list one by one.
For hydrogenation units, the principle of increasing volume first and then temperature, and decreasing temperature first and then volume should be followed. Since the hydrogenation reaction is an exothermic reaction, if the temperature is increased first and then the amount of reactant, it can easily lead to a spike in the reactor temperature, thereby damaging the catalyst. On the one hand, it is for safety; on the other hand, it is to protect the catalyst, and the temperature can also be better controlled.