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Hydroprocessing catalyst and its prepn process

A hydrotreating and catalyst technology, applied in the treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of poor molecular sieve dispersion effect and lack of synergistic effect, and achieve the effect of high isomeric selectivity, high product yield and high activity

Active Publication Date: 2005-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is hoped that a catalyst has multiple functions of shape-selective cracking and isomerization at the same time. If a variety of molecular sieves are used for mechanical mixing, the dispersion effect of the molecular sieves is poor, and the respective characteristics cannot be fully exerted, and a good synergistic effect cannot be reflected.

Method used

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  • Hydroprocessing catalyst and its prepn process
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  • Hydroprocessing catalyst and its prepn process

Examples

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preparation example Construction

[0025] In the process of preparing the TON structure molecular sieve provided by the present invention, other raw materials and operating conditions can be determined according to the prior art, such as various TON structure molecular sieves (ZSM-22, Theta-1, ISI-1, KZ-2 in the prior art) and NU-10) raw materials and operating conditions used in the preparation process. Its change is: the templating agent described in step (a) is a double templating agent, that is, it is composed of two templating agents, wherein the main templating agent is a diamine compound, which can be C2 -C 10 The diamine, preferably C 5 -C 8 diamine, more preferably hexamethylenediamine; the auxiliary templating agent is generally a nitrogen-containing heterocyclic compound, preferably a pyrrole derivative, more preferably pyrrolidine. Said auxiliary agent can be C 5 -C 10 Alkanes, preferably C 5 -C 8 n-alkanes or naphthenes, more preferably C 5 -C 7 Naphthenic. The IVA element compound in the ...

Embodiment 1～3

[0040] The preparation method of the TON type molecular sieve involved in the catalyst of the present invention.

[0041] Take a certain amount of water and put it in a beaker, add silicon source, aluminum source and alkali in turn, mix thoroughly, then add the main template agent, auxiliary template agent and auxiliary agent in turn, or mix the three organic substances and add them together, after fully mixing , moved into an autoclave for crystallization, and samples E-1, E-2, E-3, and C-1 were obtained after post-treatment. Samples E-1, E-2, and E-3 were kept at 550°C for 2 hours to remove the membrane plate agent; ammonium was exchanged twice, and the condition was to exchange 4 times at 80°C with 10% ammonium nitrate solution whose weight was 5 times that of the molecular sieve. Hours, then roasted at 550°C for 4 hours; then use a mixed acid solution with a molar concentration of nitric acid of 0.5mol / L and a molar concentration of tartaric acid of 0.2mol / L, and treat it ...

Embodiment 4

[0056] A kind of preparation method of catalyst of the present invention

[0057] The preparation of the catalyst was the same as that in Comparative Example 2, except that 650 g of the TON molecular sieve prepared in Example 1 was used to replace the SAPO-11 molecular sieve, and only Pt was contained in the impregnation solution, and finally the catalyst of the present invention containing 0.6w% Pt was obtained, and the number was E-4 , the evaluation conditions and results are shown in Table 3 and Table 4.

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Abstract

The present invention is hydroprocessing catalyst and its preparation process. The catalyst includes one kind of molecular sieve with TON type structure and active metal component, and the molecular sieve has the features of surface Si / Al ratio higher than the bulk Si / Al ratio, proper acidity and channel structure for paraffin hydrocarbon to generate shape-selective cracking-isomerizing reaction, etc. The catalyst is used in hydroprocessing intermediate fraction oil and heavy fraction product, and has the features of high activity, high isomerizing selectivity, low cracking performance, etc.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a diesel oil and lubricating oil hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] Since middle and heavy distillate oils such as diesel oil and lubricating oil contain a large amount of macromolecular linear or less branched alkanes (usually called waxes) with higher melting points, they have higher pour point, lower 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 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G49/08
Inventor 刘全杰徐会青童广明廖士纲刘平姚春雷谢庆华谢亮亮王伟
Owner CHINA PETROLEUM & CHEM CORP
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