A kind of hydrocracking method for producing high-quality gasoline and diesel oil

A technology for hydrocracking and inferior diesel oil, applied in the field of hydrocracking, can solve the problems of harsh reaction conditions, supersaturation of polycyclic aromatic hydrocarbons, difficulty in producing high-octane gasoline, etc., and avoid secondary cracking and partial pressure of hydrogen. The effect of reducing and reducing the amount of dry gas produced

CN106479566BActive Publication Date: 2018-11-02CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-11-02

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Abstract

The invention discloses a hydrocracking method for producing high-quality gasoline and diesel. The method comprises the steps: subjecting animal and vegetable oils to hydropretreating, then, enabling the pretreated oil to enter a hydrocracking reactor, and carrying out a contact reaction with a hydrocracking catalyst I under the conditions of relatively low temperature and high volumetric space velocity; then, mixing the product with a hydrorefining product of inferior diesel, and then, carrying out a contact reaction with a hydrocracking catalyst II; and subjecting the reaction product to separation and fractionation, thereby obtaining the high-quality gasoline and diesel. According to the method, separate characteristics of animal-and-vegetable-oil hydrogenation modification and inferior diesel hydro-conversion processes are fully taken into account, and the two kinds of processes are effectively combined reasonably, so that high-octane gasoline products and diesel products can be produced simultaneously, and the lubricating property of the diesel products is improved.
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Description

technical field

[0001] The invention discloses a hydrocracking method, more specifically a combined hydrocracking method for producing high-octane gasoline and high-quality diesel oil by using diesel fractions with high aromatic content and animal and vegetable oils as raw materials. Background technique

[0002] Since the beginning of the 21st century, with people's increasing awareness of environmental protection, stricter national environmental protection laws and regulations, and rapid development of the national economy, the demand for clean motor fuels has been increasing all over the world.

[0003] Catalytic cracking (FCC) technology is one of the main technological means for lightening heavy oil, and it occupies a relatively important position in oil refining enterprises all over the world. In China's heavy oil and light chemical processing units, the processing capacity of catalytic cracking units accounts for a more prominent proportion. In the composition of gaso...

Examples

Embodiment 1-2

[0036] Examples 1-2 are examples of the method of the present invention, in which the weight ratio of animal and vegetable oil to inferior catalytic diesel is 1:1. Reference example 1 is the implementation effect of the catalytic diesel hydrogenation conversion technology, and reference example 2 is the implementation effect of the animal and vegetable oil hydrogenation upgrading technology. Table 1 shows the properties of the feedstock, Table 2 lists the properties of the hydrocracking catalyst used, and Table 3 lists the operating conditions and results.

[0037] Table 1 Raw oil properties.

[0038]

[0039] Table 2 Hydrocracking catalyst properties.

[0040]

[0041] Table 3 Operating conditions and results.

[0042]

[0043] *The lubricity in the vehicle diesel quality standard is generally characterized by the corrected wear scar diameter of 60°C, which is required to be no greater than 460μm.

[0044] The invention fully considers the respective characteristi...