Method for producing high-quality gasoline

Abstract

The invention discloses a method for producing high-quality gasoline. The method comprises the following steps: heavy oil raw materials are mixed with hydrogen, and the mixture passes through a reaction zone containing a wax oil hydrogenation conversion catalyst for a reaction; b), separation is performed on reaction effluent obtained in step a), and converted gasoline and converted diesel are obtained; c) the converted diesel obtained in step b) is mixed with hydrogen, and the mixture passes through a reactor containing a diesel hydrogenation upgrading catalyst bed layer for a reaction; d), reaction effluent obtained in step c) is separated, and upgraded gasoline and upgraded diesel are obtained; e), the upgraded diesel obtained in step d) is mixed with a conventional catalytic cracking feed material, the mixture is subjected to a catalytic cracking reaction, separation is performed on reaction effluent, and catalytic gasoline is obtained; f), gasoline components obtained in step b),step d) and step e) are blended, and the high-quality gasoline product or a blend component is obtained. The high-quality gasoline product or the gasoline blend component can be obtained by effectively processing the heavy oil raw materials.

Description

technical field [0001] The invention relates to a processing method for wax oil components, in particular to a method for processing wax oil raw materials to produce high-quality gasoline. Background technique [0002] Gasoline is one of the most used light petroleum products and is an important fuel for engines. It can be obtained from different units of petroleum refining. During crude oil processing, distillation, catalytic cracking, thermal cracking, hydrocracking, catalytic reforming and other units all produce gasoline components, but the octane number is different. For example, straight-run gasoline has a low octane number and cannot be used as engine fuel alone; in addition, the sulfur content of impurities is also different, so gasoline components with high sulfur content need to be desulfurized After refining, the above-mentioned gasoline components are blended, and if necessary, high-octane components need to be added to finally obtain gasoline products that meet ...

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Problems solved by technology

[0006] CN101724454A introduces a hydrocracking method for producing high-octane gasoline. The raw material oil is mixed with hydrogen and enters the reactor for hydrofining and hydrocracking reactions in turn. Although it has the ability to process more inferior raw materials and the catalyst has a long operating cycle and hydrocracking products with good quality

[0007] CN103184073A introduces a hydrocracking method for producing high-octane gasoline blending components. The raw oil is subjected to controlled hydrofinishing and hydroconversion reactions, although the target product can be high-octane through technological control Gasoline or blending components, but the selection range of raw materials is still relatively simple, and heavy oil products cannot be used for production, and at the same time, the catalyst has not been effectively improved for the process

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