Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil

A technology of transformer oil and base oil, which is applied in the direction of base material, petroleum industry, and hydrocarbon oil treatment, and can solve the problems of low yield and insufficient yield

Active Publication Date: 2016-04-06
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method adopts a full hydrogenation process. Due to the limitation of raw mater...

Method used

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  • Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil
  • Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil
  • Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Take Qinhuangdao 32-6 normal pressure distillation range 290℃-340℃ furfural refined extraction oil as raw material (see Table 1 for detailed properties), add denitrification agent WSQ-2 and clay for refining to obtain denitrification refined oil ;

[0026] (2) Using the denitrification refined oil obtained in step 1) as the raw material, the hydrogenation test is carried out in the hydrogenation pilot plant (produced by Shanghai Minrell Experimental Equipment Co., Ltd., two reactors are connected in series, and the maximum loading of catalyst in a single reactor is 200mL , The new hydrogen passes once), the first reactor is filled with the hydrotreating catalyst LH-23 catalyst, and the second reactor is filled with the hydrotreating catalyst FV-10 catalyst. The detailed operating parameters are shown in Table 2, and then proceed. Distillation cutting to obtain the transformer oil base oil provided by the present invention.

[0027] According to the data in Table 2, the ...

Embodiment 2

[0036] The processing flow of Example 2 is exactly the same as that of Example 1. The feedstock oil, hydrogenation test device, hydrotreating catalyst, hydrogenation supplemental refining catalyst, denitrification agent, and adsorbent are also the same. The specific operating parameters are different from those of Example 1 (details See Table 2).

[0037] According to the data in Table 2, the base oil pour point of the transformer oil is -63℃, and the kinematic viscosity (-40℃) is 1186mm. 2 / s, gassing property +9μL / min. It can be seen from the carbon type distribution data that compared with the raw material, its C P The value remains basically unchanged, and C N The value is as high as 61.5%, indicating that the cycloalkane basically does not open the ring during this process, and has excellent oxidation stability and electrical properties. It shows that the transformer oil base oil with low condensation and high naphthenic carbon content has excellent properties.

Embodiment 3

[0039] The processing flow of Example 3 is exactly the same as that of Example 1. The feedstock oil, hydrogenation test device, hydrotreating catalyst, hydrogenation supplemental refining catalyst, denitrification agent, and adsorbent are also the same. The specific operating parameters are different from those of Example 1 (details See Table 2).

[0040] According to the data in Table 2, the base oil pour point of the transformer oil is -66℃, and the kinematic viscosity (-40℃) is 1047mm. 2 / s, gassing property +10μL / min, it can be seen from the carbon type distribution data that compared with the raw material, its C P The value remains basically unchanged, and C N The value is as high as 63.2%, indicating that the cycloalkane basically does not open the ring during this process, and has excellent oxidation stability and electrical properties. It shows that the transformer oil base oil with low condensation and high naphthenic carbon content has excellent properties.

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Abstract

The invention discloses transformer oil base oil with a low freezing point and high naphthenic carbon content and a preparation method of the transformer oil base oil. The preparation method comprises steps as follows: 1), Qinhuangdao 32-6 furfural refinement extract oil with the distilling range of 290-340 DEG C is taken as a raw material, a denitrification agent and an adsorbing agent are added for refining, and denitrified refined oil is obtained; 2), the denitrified refined oil obtained in the step 1) is sequentially subjected to hydroprocessing and hydrorefining, and the transformer oil base oil is obtained through distillation. The production difficulty of the transformer oil base oil with the low freezing point and the high naphthenic carbon content in the prior art is solved, the preparation method of the transformer oil base oil with the low freezing point and the high naphthenic carbon content is provided, a product prepared with the method has the characteristics of high naphthenic carbon content, low pour point, good oxidation stability and lower degreasing property, and the production difficulty of the transformer oil base oil with the low freezing point and the high naphthenic carbon content in the prior art is solved.

Description

Technical field [0001] The invention belongs to the field of petrochemical industry, and specifically relates to a transformer oil base oil with low condensation and high naphthenic carbon content and a preparation method thereof. Background technique [0002] CN1990833A discloses a method for producing ultra-high voltage transformer oil. The method is to sequentially contact naphthenic raw material oil with a hydroprocessing catalyst and a hydrorefining catalyst under hydrogenation reaction conditions to obtain ultra-high voltage transformer oil. The method adopts a full hydrogenation process. Due to the limitation of raw materials, the yield of the target product is less than 80%, and the yield is low. [0003] CN102086419A relates to a converter transformer insulating oil base oil and a preparation method thereof: 1) Hydrotreating the intermediate base or naphthenic distillate at 280-350°C; 2) Purifying the distillate oil after the hydrorefining to furfural refining and removing...

Claims

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Application Information

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IPC IPC(8): C10G67/06C10M109/02
CPCC10G67/06C10G2300/1037C10G2400/12C10M109/02C10M2203/003
Inventor 秦一鸣杨文中马莉莉蔡烈奎张海洪郭莎莎徐岩峰王凯田义斌宋君辉
Owner CHINA NAT OFFSHORE OIL CORP
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