Source of reformed cyclopentane
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The reformation reactions include pentacyclic naphthenes dehydrogenation isomerization reactions; cyclopentane has a boiling point of 46 degrees, while methylcyclopentane has a boiling point of 68 degrees. In the pre-hydrodesulfurization process, the feedstock, which is refined naphtha, must have a initial boiling point of at least 76 degrees. So how does cyclopentane get into the reactor?
Cyclopentane enters the reactor via a refined naphtha feed. According to the problem description, the initial boiling point of the reaction feed refined naphtha is not less than 76 degrees, while the boiling point of cyclopentane is 46 degrees; therefore, cyclopentane is present in the refined naphtha. In the reformation reaction, cyclopentane in naphtha participates in the five-membered cycloalkane dehydroisomerization reaction to form compounds with higher boiling points. .
During the catalytic reforming reaction, hydrocracking and hydrodealkylation side reactions occur, resulting in the formation of a small amount of light hydrocarbons.