Dewaxing catalyst for lubricant oil distillate and its uses

A catalyst and lubricating oil technology, which is applied in the lubricating oil hydrodewaxing catalyst and its application in the lubricating oil hydrodewaxing process, and can solve the problems of easy cracking, lower liquid yield, matching of acid function and hydrogenation function Inappropriate and other issues

Active Publication Date: 2007-04-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acid function and hydrogenation function of the catalyst are not properly matched, and side reactions such as cracking are prone to occur, resulting in a decrease in liquid yield.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] Provide a kind of specific preparation method of catalyst of the present invention below, but not limited to this method, concrete steps are:

[0020] (1) Fully kneading molecular sieves, inorganic refractory oxides, extrusion aids, water and peptizers together to form a plastic paste, extruded into strips, dried and roasted to obtain a catalyst carrier;

[0021] (2) Using an aqueous solution containing an active metal component, selectively adding a water-soluble compound containing an auxiliary agent, drying and roasting to obtain the catalyst of the present invention;

[0022] Wherein zinc can be before step (2), impregnate the catalyst support that step (1) obtains with zinc-containing aqueous solution, through drying, roasting, obtain zinc-containing catalyst support; Also can impregnate on the catalyst support together with active metal component; Also The active metal can be dipped first, followed by zinc; one of the first two methods is preferred.

[0023] The ...

Embodiment 1

[0042] A kind of preparation method of catalyst of the present invention

[0043] Take 200 grams of S-1 carrier, use the 3 ) 4 Cl 2 Saturated impregnation with a solution of zinc acetate, then dried at 100°C for 8 hours, and calcined at 500°C for 3 hours in an air atmosphere to obtain a catalyst of the present invention containing 0.6wt% Pt and 2.4wt% Zn, numbered as E-1, which The physical and chemical properties are shown in Table 3, and the reaction results are shown in Table 4.

Embodiment 2

[0045] A kind of preparation method of catalyst of the present invention

[0046] Take 200 grams of S-2 carrier, use a solution containing palladium nitrate and zinc chloride to carry out ion exchange at 60°C for 12 hours, then dry at 110°C for 6 hours, and bake at 480°C for 4 hours in an air atmosphere to obtain 0.8wt The catalyst of the present invention with %Pd and 0.6wt% Zn is numbered E-2, its physicochemical properties are shown in Table 3, and the reaction results are shown in Table 4.

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PUM

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Abstract

The invention disclosed a kind of lubricating oil deparaffinage catalyst as well as its application during the deparaffinage process. The mentioned catalyst contains TON and/or MTT molecular sieve, at least one VIII group precious metal and zinc, the ratio of zinc and VIII group precious metal is 0.1-50. According to the invention, the zinc can regulate the catalyst's acidifying function and hydrogenating function so as to improve the activity and selectivity of the catalyst. If the catalyst is used in the deparaffinage process of lubricating oil to get the base oil of the same pour point, it can increase the liquid yield and base oil yield by 1.5wt%-5wt% and 2wt%-10wt% respectively.

Description

technical field [0001] The invention relates to a hydrodewaxing catalyst, in particular to a lubricating oil hydrodewaxing catalyst and its application in the lubricating oil hydrodewaxing process. Background technique [0002] Lubricating oil contains a large amount of macromolecular linear or less branched chain alkanes (commonly known as waxes) with high melting point, so it has high pour point, low viscosity index and poor low temperature performance. To improve these properties, it is necessary to remove all or part of the high melting point wax. At present, the commonly used dewaxing methods mainly include solvent dewaxing, catalytic dewaxing and isomeric dewaxing. [0003] Solvent dewaxing is to use the solubility of wax in solvent to remove it. The disadvantage of this method is that it is difficult to choose solvent, waste a lot of organic solvent, harmful to human body and pollute the environment, high equipment investment and operating costs, and product quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/02
Inventor 王刚李灿刘全杰徐会青贾立明韩崇仁
Owner CHINA PETROLEUM & CHEM CORP
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