Solid catalyst for petroleum liquid component sweetening and preparation method

A technology of solid catalysts and liquid components, applied in chemical instruments and methods, physical/chemical process catalysts, petroleum industry, etc., can solve problems such as short life, reduced catalyst activity, difficult catalyst regeneration, etc., to increase alkalinity, sulfur Effects of Alcohol Oxidation Activity and Stability Improvement

Inactive Publication Date: 2009-07-08
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: the swelling of the polymer carrier will cause the aggregation of CoPc molecules, thereby reducing the catalyst activity or causing catalyst deactivation, and the regeneration of the catalyst is very difficult
After loading CoPcS, it has good initial activity for the oxidation of aviation fuel mercaptans to disulfides, but has a short lifetime

Method used

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  • Solid catalyst for petroleum liquid component sweetening and preparation method
  • Solid catalyst for petroleum liquid component sweetening and preparation method
  • Solid catalyst for petroleum liquid component sweetening and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 This example provides the preparation of the catalyst of the present invention

[0025] The first step of impregnation: take 15.0g γ-Al 2 o 3 Store in a sealed container after vacuum drying for 24 hours. 30.0g Mg(NO 3 ) 2 ·6H 2 O and cocatalyst 6.0g Ni(NO 3 ) 2 ·6H 2 O is dissolved in 30.0g of distilled water to make the impregnation solution for the first step of impregnation; the dried carrier γ-Al 2 o 3 Immerse in the above impregnating solution. Ultrasonic vibration is used during the impregnation process. The frequency of the ultrasonic wave is 40KHz, the impregnation temperature is 30°C, and the impregnation time is 24 hours; The time is 5 hours, and the basic catalyst support after calcination and activation is obtained;

[0026] The second step of impregnation: take 0.5g sulfonated cobalt phthalocyanine and 0.1g C 12 h 28 Dissolve BrN in a mixed solution of ethanol and water at a ratio of 5:1 by volume to make an impregnation solution for t...

Embodiment 2

[0027] Example 2 This example illustrates the experimental method of catalyst desulfurization activity

[0028] 1), static test

[0029] Add 25ml of mercaptan-containing gasoline liquid into a closed reactor equipped with 1.0g of catalyst, place it statically, and measure the concentration of mercaptan.

[0030] 2), simulated dynamic test

[0031] Add 25ml of mercaptan-containing gasoline liquid into a closed reactor equipped with 1.0g of catalyst, shake and stir, and measure the concentration of mercaptan.

[0032] Mercaptan concentrations were analyzed using a gas chromatograph with a flame photometric detector. The chromatographic column is a capillary column, and the analysis conditions are as follows: column oven: 50°C; injector at 200°C; detector at 220°C; carrier gas (N 2 ): 25ml / min; H 2 : 30ml / min; air: 300ml / min; injection volume: 0.5μL. In the following examples, the concentration of trace mercaptans has been analyzed and measured by this method.

Embodiment 3

[0033] Example 3 This example illustrates the impact of catalyst formulation parameters on the catalyst

[0034] During the preparation of the catalyst of this example, other preparation process conditions and parameters were consistent with Example 1 except the formulation parameters shown in the table. The sweetening activity analysis data are shown in the table:

[0035]

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PUM

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Abstract

Disclosed is a solid catalyst used for removal of mercaptans of petroleum liquid ingredients. The catalyst uses gamma-Al2O3 as a carrier, first loads a metal nitrate on the carrier by immersion method and then bakes the metal nitrate to realize loading of alkali metal oxide on the carrier gamma-Al2O3 so as to produce the alkali catalyst carrier, and then uses the mixed solution of sulfonated cobalt phthalocyanine and ethanol water added with quaternary ammonium salt or organic base as impregnating solution to impregnate the carrier to obtain the target catalyst after drying. The catalyst is mainly suitable for removal of mercaptans of liquefied petroleum gas, gasoline, kerosene, naphtha, aviation fuel, liquid propylene and other liquefied petroleum ingredients. Experiments prove that the thiol conversion rate can stand at 100% in 20min and the life of the catalyst exceeds 300h.

Description

technical field [0001] The invention relates to a solid catalyst for sweetening petroleum liquid components and a preparation method. Background technique [0002] Oil contains a considerable amount of sulfides, among which mercaptans (RSH) have the greatest impact on oil quality. It not only makes the oil produce a foul smell, but also affects the stability of the oil. In addition, mercaptans are corrosive at higher temperatures. Therefore, in the process of petroleum processing, oil must be deodorized and refined to remove mercaptans or convert mercaptans into less harmful disulfides. Regarding the deodorization and refining of oil products, the process commonly used at home and abroad is pre-alkali washing and deodorization. Its development direction is mainly to reduce or even completely eliminate the discharge of waste lye and improve the deodorization efficiency. At present, processes such as non-caustic deodorization and non-alkali deodorization have occurred, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J31/12B01J27/25C10G27/00
Inventor 张龙冯子洋郑建丽
Owner CHANGCHUN UNIV OF TECH
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