What are the main reactions that occur in the post-reactor purification section and what is their function?
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What are the main reactions in the post-refining stage? Are there any reactions involving aromatics and olefins?
The function of the refining section downstream of the hydrocracking reactor is primarily to remove thiol and thioether compounds. In hydrogenation desulfurization reactions, heterocyclic sulfides and polybenzothiophene sulfides are generally difficult to remove; these substances end up in the cracking reaction zone. After the cracking reaction takes place, some of these heterocycles break apart into smaller molecules, forming thiols or thioethers. Therefore, a certain amount of refining agent is placed at the bottom of the last reaction bed in the cracking reactor to remove the thiols and thioethers generated as a result of the cracking reaction.
Agree with what was said above; it can also remove thiols generated from olefins and hydrogen sulfide, as well as saturate unsaturated hydrocarbons such as olefins!