Octane number of stable gasoline produced by the catalytic unit
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What is the stable octane number produced by the catalytic unit? Recently, the octane number of my unit has been around 89 – is that considered low? Apart from factors such as reaction temperature, catalyst-to-fuel ratio, carbon content in the catalyst, and the properties of the raw materials, are there any other factors that influence the octane number?
Does the riser have a large-bellied second reactor? A certain opening degree of the two-way check valve can reduce olefins ； Catalyst activity also has an impact on gasoline olefins.
Under normal production conditions, the octane rating of our regular gasoline is generally between 91.5 and 92.5, while that of the hydrotreated gasoline is between 90 and 90.7； Reaction temperature, catalyst activity, reagent-to-oil ratio, and raw material properties are the main factors; generally, the reaction pressure is not adjusted ； Stabilize the saturated vapor pressure, and adjust the olefin content appropriately according to the hydrogenation refining capacity required for subsequent processing
A conventional riser, not a MIP
Have you tried adjusting the atomizing steam, the steam terminator, etc.?
Can steam also have an effect? Steam can affect the partial pressure of oil and gas, but it shouldn’t affect the octane rating, right?
Under normal circumstances, it’s around 90. There are many factors that can affect it; has the raw material been analyzed?
It’s not low anymore; we’re only around 86
This post was last edited by Refiner on 2018-6-28 08:28. The operation of the stabilizer column also has an impact, but generally no changes are made; it’s likely that the composition of the raw materials has changed! Has the reprocessing ratio changed?
Raw material analysis is performed on four components, along with the boiling range
Is it stable gasoline produced by a catalytic unit, or gasoline after hydrogenation?