Components of reformed liquefied gas
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The components of reformed liquefied gas are mainly propane and C4 hydrocarbons; why is there no propylene?
In my understanding, reformed liquefied gas mainly consists of C3/C4 light hydrocarbons produced by cracking reactions within the four-stage reactor; since unsaturated olefins are hydrogenated to form alkanes under hydrogenation conditions, the propylene content in reformed liquefied gas is very low.
Reforming primarily uses naphtha fractions, which already contain very low levels of olefins. Both the pre-hydrogenation step and the reforming process itself utilize hydrogen; this hydrogen saturates the small amount of olefins present, so there are no olefins left
When olefins are hydrogenated and saturated, they generally become saturated liquefied gas