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Refined hydrogenation catalyst and its preparation method

A hydrogenation refining and catalyst technology, applied in refining to remove heteroatoms, etc., can solve the problems of catalyst aromatics saturation reduction, high liquid yield, catalyst deactivation, etc., achieve concentrated pore distribution, low preparation cost, and simple process Effect

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1157847A proposes to refine the kerosene fraction by hydrogenation, and the raw material oil and hydrogen react in the presence of a nickel catalyst. The method has mild conditions, high liquid yield, non-toxic and harmless oil, and no environmental problems such as three wastes. The downside is that there is no guarantee that the product will not smell
Since the carrier used is not acidic, the aromatic hydrocarbon saturation capacity of the catalyst is greatly reduced, and the active metal component used is only nickel, which is easy to react with impurities such as sulfur to deactivate the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] One of the specific preparation methods of the hydrogenation catalyst of the present invention comprises the following steps:

[0017] A. At room temperature to 90°C, mix the solution of the silicon-containing raw material and the titanium-containing raw material according to the required amount and stir for 1 to 3 hours;

[0018] B. Add water and solvent while stirring in the above-mentioned mixture solution to carry out hydrolysis polymerization, and the reaction time is 2 to 20 hours;

[0019] C. Aging and drying the wet gel obtained by hydrolytic polymerization at room temperature to 120°C;

[0020] D. Shaping the dried xerogel, then drying at normal temperature to 200°C for 0.5 to 24 hours, and then calcining at 400°C to 600°C for 0.5 to 6 hours to obtain a catalyst carrier without active metal;

[0021] E. Loading active components nickel and molybdenum on the carrier, drying at normal temperature to 200°C for 0.5 to 24 hours, and then calcining at 400°C to 600°C...

Embodiment 1

[0037] Catalyst E-1 prepared according to the method provided by the present invention.

[0038] Take 2.0 moles of ethyl orthosilicate and put it into a three-neck round bottom flask, add 0.2 moles of butyl titanate, stir at 35°C for 1 hour, then take the amount of ethyl orthosilicate as the basis, Distilled water was added in the ratio of ethyl ester: water = 1: 4 (mol / mol), and absolute ethanol was added in the ratio of ethyl orthosilicate: absolute ethanol = 1: 20 (mol / mol). Continue to stir until the mixed solution becomes viscous, and a white transparent wet gel is obtained. The wet gel is kept at 90°C for 24 hours to prepare a dry gel, which is crushed and mixed with the calculated amount of MoO 3 Mix the powder thoroughly, then add appropriate water to make it into a plastic paste, extrude it into a cylindrical strip of 1.5 mm, dry it at 100°C for 12 hours, and bake it at 550°C in air for 8 hours. A catalyst carrier is obtained.

[0039] The catalyst carrier obtained ...

Embodiment 2

[0041] Catalyst E-2 prepared according to the method provided by the present invention.

[0042] remove TiCl 4 To replace butyl titanate, based on the amount of ethyl orthosilicate, distilled water was added in the ratio of ethyl orthosilicate: water = 1:5 (mol / mol), and ethyl orthosilicate: absolute ethanol = Add absolute ethanol at a ratio of 1:5 (mol / mol), add nickel oxide during the molding process of the carrier, and the impregnation solution is a mixed solution of nickel nitrate and ammonium molybdate, and other preparation steps and preparation conditions are the same as in Example 1 , the number of the catalyst obtained is E-2. The composition and physical and chemical properties of catalyst E-2 are shown in Table 1, the properties of the raw oil used are shown in Table 2, the process conditions are shown in Table 3, and the evaluation results are shown in Table 4.

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Abstract

The invention provides a catalyst for hydrogenation refining, wherein the main active constituent of the catalyst is Ni, the auxiliary agent is Mo, the carrying agent is Ti-modified SiO2, the content of NiO is 20-60 wt%, the content of MoO3 is 0.5-10 wt%, the content of TiO2 is 2-20 wt%.

Description

technical field [0001] The invention relates to a hydrorefining catalyst. The catalyst is used in the hydrogenation process of aromatics, especially for the hydrogenation dearomatization and decolorization process of industrial white oil and solvent oil. Background technique [0002] In addition to being used as jet fuel and kerosene for lamps, kerosene fractions are also suitable for special solvents. It is widely used in the field of fine chemicals such as air fresheners, aerosol mosquito killers and insecticides, detergents, glazing agents, textile printing solvents, spice extraction, and prepared cosmetics. It is one of the special solvent oils for fine chemicals. [0003] However, no matter whether the selected basic raw material is straight-run kerosene or hydrocracked kerosene, there is a pungent smell during its use, that is, the smell of kerosene. The factors that have the greatest impact on kerosene odor are: sulfur-containing compounds, nitrogen-containing compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
Inventor 刘全杰王刚徐会青贾立明王伟
Owner CHINA PETROLEUM & CHEM CORP
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