High inlet temperature of the hydrogenation reactor
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What are the hazards of high or excessive inlet temperature in the hydrogenation reactor of a gasoline hydrogenation unit, and how should it be addressed?
Harm: Excessive temperature in the reactor bed leads to catalyst sintering, resulting in catalyst deactivation and the generation of large amounts of light components; this disrupts the distillation process and causes overpressure. Treatment: Supply cold hydrogen to the bed to lower its temperature, reduce the gas flow in the reactor, and open the heat exchanger connections to decrease heat exchange
Carbon deposition on the catalyst leads to deactivation, damages the internal components of the reactor, reduces the temperature at the outlet of the furnace, decreases the processing capacity, and increases the amount of recycled hydrogen
Catalyst coking and carbon deposition reduce its activity and shorten its lifespan; bed temperature should be controlled by lowering the inlet temperature, adjusting the furnace load, increasing the amount of quench hydrogen, and appropriately reducing the processing volume
Reduce the processing volume, lower the furnace outlet temperature, and increase the amount of circulating hydrogen
The most direct and effective method is to reduce the temperature at the furnace outlet; excessively high temperatures can lead to an increase in the temperature of the bed layer, with the temperature rising exponentially, which may result in overheating and catalyst damage. The immediate solution is to implement emergency pressure relief and shut down the facility
Harm: Excessive temperature in the reactor bed leads to catalyst coking, which accelerates catalyst deactivation, results in the production of large amounts of light components, and alters the product distribution. Treatment: Reduce the fuel gas in the reaction furnace, adjust the high-pressure heat exchanger lines, and turn on cold hydrogen to cool the bed.
Harm: The catalyst is severely damaged. Local overheating causes catalyst coking! Too many side effects! Process. Multi-layer reactors can use quench hydrogen! High-switch bypass. Reduce the reaction temperature. Turn off the furnace if necessary
Why does the temperature get too high?
Thank you to all the teachers for their help! ! !
Harm: **Drip, go and take a look yourself at the regulations or the FAQs on hydrocracking technology; the biggest harm is the catalyst