How does gasoline hydrogenation improve the octane rating of gasoline?

Improve? How is that possible? Hydrogenation reduces the octane rating

Reduce the degree of hydrogenation, improve catalyst selectivity, and lower the content of olefins in the feedstock

Hydrogenation does not increase the octane rating; raising the octane rating relies mainly on additives such as MTBE, alkylation, or naphtha reforming

Hydrogenation is a process of saturating olefins, which reduces the octane rating

Hydrogenation only reduces the octane rating; blending is required to achieve a satisfactory octane level

It is only possible to reduce the loss of octane value; improving the hydrogenation process is not feasible at present

First, it is necessary to understand what the key factors affecting octane rating are, and then control those factors to minimize any loss in octane rating；

Hydrogenation is a process of saturating olefins, which reduces the octane rating

Hydrogenation is considered to minimize octane loss as much as possible. . .

Gasoline hydrogenation results in a loss of octane number, primarily due to the control of the octane number of the feedstock, as well as the degree of olefin saturation during the hydrogenation reaction!

This post was last edited by liqingxu on 2017-2-7 07:46. Currently, for the hydroprocessing of National V gasoline, sulfolane extraction for desulfurization is carried out after pre-hydrogenation; the pre-hydrogenation reactor converts thiol compounds into thioethers and reduces the level of dienes to below 0.5. Entering the pre-distillation tower, the hydrogen and oil stream taken from the top of the tower accounts for approximately 20% of the total feed, with a hydrogen-to-oil ratio between 40 and 70. The remaining portion enters the extraction and weight-cutting tower; the fraction with a boiling range below 110 degrees enters the extraction desulfurization process, accounting for about 40% of the total feed. The fraction with a boiling range between 110 and 180 degrees enters the selective hydrogenation desulfurization process. After desulfurization via extraction, this mixture is combined with the gasoline produced by selective hydrogenation to form etherified gasoline, which is then sent out of the plant to the storage area. In this way, the hydrogenation portion accounts for only about 40%. The octane loss is very low; please take this into consideration.