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In the reforming unit (IFP process), the yields of the light and heavy reformate streams – namely the components at the top of the distillation column after the stabilizer bottom oil enters this column, mainly non-aromatics/benzene/toluene – are much higher than the designed yields; they are around 42%, whereas the designed yield is around 35%. Please discuss whether the yields of these light and heavy reformate streams in the reforming unit are primarily determined by the properties of the feedstock or by the operating conditions, and what would be a reasonable normal yield level?
First, check whether the composition of the raw materials, the processing volume, and the operating parameters are in line with the design specifications; if there are significant differences from the designed values, it is not surprising that the proportions of benzene and toluene in the extracted raw materials will also differ significantly from those specified in the design; Generally, when patent holders use the given raw material composition to make estimates, the values they obtain are not very different from those obtained in actual production.
I basically understand what you’re saying. May I ask which component is included in the raw material composition (normal alkanes? Heteroalkanes? Naphthenes? ) and which part of the operating parameters (temperature, pressure, hydrogen-to-oil ratio) affect the product yield distribution?
Yes, it refers to the analysis data on the composition of the PNA family in the feed used for reprocessing, as well as impurity levels. The operational parameters include temperature, pressure, hydrogen-to-oil ratio, the carbon content of the raw catalyst, the chlorine content in the catalyst, and specific surface area. It is necessary to compare these data with the design specifications in order to conduct an accurate analysis
You’re being too general; could you be a bit more specific? What are the key influencing factors
I think the most significant impact lies in the composition of the raw materials
I also think that the composition of the raw materials has the most significant impact, while the effects of temperature and pressure are not so obvious