Regarding the selection of the sequence of aromatization, isomerization, and hydrodesulfurization in the hydrodesulfurization of heavy gasoline?
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All the processes I’ve seen involve first performing hydrodesulfurization on heavy gasoline, and then high-temperature isomerization using methods such as PROMG+. Is it possible to carry out high-temperature isomerization first and then low-temperature desulfurization? What are their respective advantages and disadvantages?
I really don’t understand it, but I’m very interested. I hope the experts can answer. Follow this post
High temperatures first cause the sulfides and olefins in heavy gasoline to coking, affecting the catalyst. So, hydrogenation is first used to remove sulfides and unsaturated olefins, before proceeding with the subsequent reactions