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Method for preparing lubricating oil base oil

A technology for lubricating base oils and hydrocarbon oils, applied in the petroleum industry, processing hydrocarbon oils, and hydrotreating processes, etc., can solve problems such as poor hydrodearomatization effects, and achieve low pour point, improved effects, and high yields Effect

Active Publication Date: 2005-10-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new method for producing high-quality lubricating oil base oil with good hydrodearomatization effect in view of the disadvantage of poor effect of hydrodearomatization in the prior art

Method used

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  • Method for preparing lubricating oil base oil

Examples

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preparation example Construction

[0012] The silica-alumina can be prepared by uniformly mixing alumina hydrate with at least one disordered silicon-containing molecular sieve or a composition containing a disordered silicon-containing molecular sieve at 350-850°C, preferably Roasting at 450-650° C. for 2-8 hours, preferably 3-6 hours; it can also be: aluminum oxide of one or more crystal forms selected from γ, η, θ, δ and χ and at least one The disordered silicon-containing molecular sieve or the composition containing the disordered silicon-containing molecular sieve is directly mixed uniformly.

[0013] Wherein, the alumina hydrate is selected from one or more mixtures of trihydrated alumina, monohydrated alumina and amorphous aluminum hydroxide. Said aluminum oxide hydrate can also be a modified product of the hydrate, such as a modified product added with silicon, titanium, magnesium, boron, zirconium, thorium, niobium, rare earth, etc., wherein the modified product of silicon is preferred, They can be p...

Embodiment 1

[0058] This example takes a kind of waxy lubricating oil distillate oil as raw material, and its properties are shown in Table 1.

[0059] according to figure 1 The process flow processes the raw oil. The catalysts are: hydrotreating catalyst a, dewaxing catalyst b, hydrogenation catalyst b, the operating conditions are shown in Table 2, and the properties of the formed oil are shown in Table 3.

[0060] Raw oil

[0061] Process conditions

[0062] base oil yield

Embodiment 2

[0068] This example takes a kind of naphthenic lubricating oil distillate as raw material, and its properties are shown in Table 6.

[0069] according to figure 1 The process flow processes the raw oil. The catalysts are: hydrotreating catalyst a, dewaxing catalyst a, hydrogenation catalyst a, see Table 7 for the operating conditions, and see Table 8 for the properties of the resulting oil.

[0070] Raw oil

[0071] Process conditions

[0072] Base oil yield m%

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Abstract

This invention is a preparation method of basic oil of lubricating oil. This method includes: a) in the hydro-treatment reacting area, the hydro-pressure is more than 11-30 MPa, under 320-430deg.C contact a hydrocarbon oil filler with hydro-treating catalyst; b) in a dewaxing area, the hydro-pressure is more than 11-30 MPa, under 320-430deg.C contact hydro-treated oil with a dewaxing catalyst; c) in a hydro-refining area, the hydro-pressure is more than 11-30 MPa, under 170-320deg.C contact the dewaxing oil with a hydro-catalyst containing SiO2 / alumina, platinum and Pd metal to prepare the basic oil of the lubricating oil.

Description

technical field [0001] The invention relates to a preparation method of lubricating oil base oil. More particularly, it relates to a method for preparing lubricating base oils by multi-step hydrogenation. Background technique [0002] The preparation of lube base stocks by multi-step hydrogenation is well known in the art. In this type of method, the first step is mostly for the purpose of hydrodesulfurization and nitrogen, accompanied by a hydrofinishing process of hydrogenation saturation of some aromatics. The catalyst used generally comprises a support and a Group VIII non-noble metal component and a Group VI metal component supported on the support. Suitable supports are alumina, silica-alumina or fluorine-containing alumina, and suitable hydrogenation active metal components are nickel-molybdenum, nickel-tungsten or cobalt-molybdenum. Subsequent hydrogenation steps vary depending on the feedstock oil, process flow and quality requirements ...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 王鲁强郭庆洲董维正石亚华孟宪波康小洪王奎刘广元
Owner CHINA PETROLEUM & CHEM CORP
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