Discussion on the maximum temperature at the reactor apex
Thread Content
The temperature at the highest point of the reactor reached 396°C, with a reaction pressure of 7.8 MPa. Is there still room for further temperature increase, and what are the main factors restricting this?
It is mainly related to the material of your reactor~~~~~
I agree with the view from the third floor; under such pressure, the temperature inside the reactor becomes very high. Although I don’t know what material your reactor is made of, I think there isn’t much room left to increase the temperature, unless you’re part of a state-owned enterprise.
It mainly depends on the reactor design temperature and the maximum operating temperature of the catalyst!
Is there a situation where the temperature at the highest point of the upper bed layer is higher than the reactor outlet temperature? ? ? Our feedstock contains catalytic gasoline.
This shouldn’t be discussed here, as no one knows your technical protocol temperatures, reactor design temperatures, normal operating temperatures, etc. Different devices have different operating temperatures
Looking at the design temperature, hydroprocessing of gasoline and diesel is completely feasible at this temperature. What is the hydrogen-to-oil ratio? What is the pressure difference across the catalyst bed? What’s the purpose of your temperature increase? Properties of the raw material? Heating furnace heat load?
In the case of diesel hydrodesulfurization, the operating temperature of the catalyst does not exceed 400 degrees.
For diesel and gasoline hydrogenation as well, the highest temperature in our reactor currently is around 380 degrees, while the designed maximum temperature is 427 degrees; there is little room for increasing the temperature further. Moreover, excessively high temperatures accelerate catalyst coking and aging, resulting in a progressively worse desulfurization effect.
Your reaction doesn’t show that you really understand; it’s just a random comment. Higher temperatures inevitably lead to higher pressures and faster reaction rates, but side reactions also accelerate, resulting in an increase in by-products. Will the pressure drop across the downstream equipment also increase, leading to more flashing? Will gas-phase treatment increase the load or something?