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Isomerization dewaxing catalyst and preparing method thereof

A technology of isomerization dewaxing and catalyst, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve good oxidation stability, low reaction temperature and good stability

Inactive Publication Date: 2004-04-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] U.S. Patents U.S.P. 6,306,790, 6,303,534, 6,300,537, 6,294,493, 6,294,081, 6,288,298 and 6,238,550 also disclose the synthesis and application of a novel molecular sieve with an AEL structure. It is reported that the acidity of the synthesized molecular sieve is greatly improved. However, the organic solvents used are some small molecule alcohols that can be miscible with water, etc., and the crystallization is still carried out in one phase, so there are still problems and shortcomings similar to SAPO-11

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  • Isomerization dewaxing catalyst and preparing method thereof
  • Isomerization dewaxing catalyst and preparing method thereof
  • Isomerization dewaxing catalyst and preparing method thereof

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preparation example Construction

[0027]The catalyst of the present invention is prepared according to the conventional catalyst preparation method, for example, molecular sieves, additives, other inorganic oxides, extrusion aids, water, peptizers, etc. are fully kneaded into a plastic paste, extruded into a strip, and subjected to post-treatment. The catalyst of the present invention is obtained by the processes of supporting the active metal component and the auxiliary agent, and activating.

[0028] The molecular sieve mentioned here refers to PAS-1 molecular sieve. Other inorganic oxides are molecular sieves and / or amorphous oxides other than PAS-1, such as amorphous silicon aluminum, silicon titanium, aluminum oxide, silicon oxide or molecular sieves. One or more, preferably Y-type zeolite, ZSM-5, ZSM-11, ZSM-23 ZSM-48, Beta zeolite, SAPO-11, SAPO-31, amorphous silicon aluminum, titanium aluminum, silicon oxide, oxide One or more of magnesium, zinc oxide and aluminum oxide, more preferably silicon oxide and / o...

Embodiment 1

[0037] Example 1 A synthetic method of molecular sieve PSA-1

[0038] (1) Mix 23 grams of 85% orthophosphoric acid with 72 grams of deionized water, then add 41 grams of aluminum isopropoxide and 7.2 grams of cetyltrimethylammonium bromide, and stir until homogeneous to obtain homogeneous phase 1;

[0039] (2) Add 20.8 g of ethyl orthosilicate, 9.1 g of diisopropylamine, 7.8 g of pyridine, and 32 g of benzene in sequence to obtain homogeneous phase 2;

[0040] (3) Mix homogeneous phase 1 and homogeneous phase 2 thoroughly to obtain a gel, the molar composition of which is:

[0041] 0.2S: 1.0R: 1.0Al 2 O 3 : 1.0P 2 O 5 : 1.0SiO 2 :4G:40H 2 O.

[0042] Transfer the above gel into an autogenous pressure autoclave, crystallize at a constant temperature of 190°C for 24 hours, wash the solid obtained by filtering the product 3 times with deionized water, and dry at 110°C for 4 hours to obtain the original molecular sieve powder, and perform X-ray powder diffraction. The measurement resu...

Embodiment 2

[0057]Example 2 A synthetic method of molecular sieve PSA-1

[0058] (1) Mix 26 grams of 85% orthophosphoric acid with 108 grams of deionized water, then add 41 grams of aluminum isopropoxide and 24 grams of hexadecylamine, and stir until homogeneous to obtain homogeneous phase 1;

[0059] (2) Add 41 grams of ethyl orthosilicate, 10 grams of diisopropylamine, 6 grams of di-n-propylamine, and 100 grams of n-hexanol in sequence to obtain a homogeneous 2

[0060] (3) Mix homogeneous phase 1 and homogeneous phase 2 thoroughly to obtain a gel whose molar composition is:

[0061] 1.0S: 1.8R: 1.0Al 2 O 3 : 1.1P 2 O 5 : 2.2SiO 2 :10G:60H 2 O.

[0062] Transfer the above gel into an autogenous pressure autoclave and crystallize at a constant temperature of 210°C for 24 hours. The solid obtained by filtering the product is washed 3 times with deionized water and dried at 110°C for 4 hours to obtain the original molecular sieve powder. The original molecular sieve powder is placed in a high-...

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Abstract

The present invention discloses an isodewaxing catalyst for producing base oil of lubricating oil and its preparation method. Said catalyst contains a new-type phosphorus silicon aluminium molecular sieve with AEL structure and active metal component, and the surface acidity of said molecular sieve is strong, and its mesopore distribution is more. Said catalyst is used for isodewaxing reaction of lubricating oil fraction, and has the characteristics of low reaction temp. high base oil yield, low product pour point and high viscosity index.

Description

1. Technical field [0001] The invention discloses an isomeric dewaxing catalyst and a preparation method thereof, particularly an isomeric dewaxing catalyst for producing lubricating oil base oil and a preparation method thereof. 2. Background technology [0002] Since the lubricating oil fraction contains a large amount of macromolecular linear or less branched alkanes (usually called waxes) with higher melting points, it has a higher pour point, a low viscosity index and poor low temperature performance. To improve these properties, all or part of the high melting point wax must be removed. 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 the solvent to remove. The disadvantages of this method are difficult solvent selection, waste of a large amount of organic solvents, harmful to human body and environmental pollution, high equipment investment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/06C10G73/02
Inventor 刘全杰杨军周勇徐会青王伟
Owner CHINA PETROLEUM & CHEM CORP
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