Which reaction in hydrogenation corresponds to pressure and temperature?
Thread Content
Is desulfurization related to temperature, and is nitrogen related to pressure? What are the values at which desulfurization occurs? Please help
First, let’s talk about the four key parameters: temperature, pressure, hydrogen-to-oil ratio, and space velocity. All of these parameters affect the reaction rate. The reaction process consists of 7 steps: external diffusion, internal diffusion, adsorption, reaction, desorption, internal diffusion, and external diffusion. Temperature and pressure affect the fourth step, namely the catalytic capacity of the catalyst. The air-to-hydrogen-to-oil ratio affects the first and seventh steps, that is, the time that the oil is in contact with the catalyst. Regarding the question you raised, it can be said that as temperature and pressure increase, the catalytic performance of the catalyst also improves.
To improve the desulfurization effect, it is necessary to increase the reaction temperature, while increasing the reaction pressure helps to enhance the denitrification effect. The specific temperature is determined by factors such as the raw materials, catalysts, and the requirements of the end product
Regarding diesel refinement, what temperature is required for desulfurization and what pressure is needed for denitration? At our company, the catalysts are now in their final stage of life, and the requirements in this regard are extremely high
It can be found in the basic operating procedures for hydrorefining or hydrocracking, or in some research literature on catalysts