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Paraffin-based transformer oil and preparation method thereof

A transformer oil and paraffin-based technology, which is applied in the petroleum industry, base materials, lubricating compositions, etc., can solve problems such as cost and performance can not be balanced, and achieve the effect of excellent comprehensive performance, excellent anti-oxidation performance, and low cost

Inactive Publication Date: 2015-03-25
CNOOC ENERGY TECH & SERVICES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims at the problem that the cost and performance of transformer oil in the prior art cannot be balanced, and provides a transformer with excellent gas separation performance and greatly reduced cost under the premise of ensuring high and low temperature performance, thermal stability and oxidation stability Oil and method for its preparation

Method used

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  • Paraffin-based transformer oil and preparation method thereof
  • Paraffin-based transformer oil and preparation method thereof
  • Paraffin-based transformer oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Select second-line wax oil, third-line wax oil and coker wax oil as mixed raw materials, alkylbenzene as aromatic compound, and T501 as oxidant to prepare transformer oil. The specific steps are as follows:

[0033] The first step is the preparation of Group II base oil. The second-line wax oil, the third-line wax oil and the coker wax oil are used as mixed raw materials. After hydrocracking reaction, hydroisomerization dewaxing reaction, hydrogenation post-refining reaction, and then After normal pressure fractionation and vacuum fractionation, the Group II base oil with aromatic carbon CA content less than 0.5% is obtained;

[0034] In order to obtain a Group II base oil with an aromatic carbon CA content of less than 0.5%, the specific process conditions for the hydrocracking reaction, hydroisomerization dewaxing reaction, and post-hydrogenation refining reaction are as follows:

[0035] The process conditions of the hydrocracking reaction are as follows: the pressur...

Embodiment 2

[0042] Select second-line wax oil, third-line wax oil and coker wax oil as mixed raw material oil, alkylnaphthalene as aromatic compound, and T501 as oxidant to prepare transformer oil. The specific steps are as follows:

[0043] The first step is the preparation of Group II base oil. The second-line wax oil, the third-line wax oil and the coker wax oil are used as mixed raw materials. After hydrocracking reaction, hydroisomerization dewaxing reaction, hydrogenation post-refining reaction, and then After normal pressure fractionation and vacuum fractionation, the Group II base oil with aromatic carbon CA content less than 0.5% is obtained;

[0044] In order to obtain a Group II base oil with an aromatic carbon CA content of less than 0.5%, the specific process conditions for the hydrocracking reaction, hydroisomerization dewaxing reaction, and post-hydrogenation refining reaction are as follows:

[0045] The process conditions of the hydrocracking reaction are as follows: the ...

Embodiment 3

[0052] Select second-line wax oil, third-line wax oil and coker wax oil as mixed raw material oil, use naphthalene as aromatic compound, and T501 as oxidant to prepare transformer oil. The specific steps are as follows:

[0053] The first step is the preparation of Group II base oil. The second-line wax oil, the third-line wax oil and the coker wax oil are used as mixed raw materials. After hydrocracking reaction, hydroisomerization dewaxing reaction, hydrogenation post-refining reaction, and then After normal pressure fractionation and vacuum fractionation, the Group II base oil with aromatic carbon CA content less than 0.5% is obtained;

[0054] In order to obtain a Group II base oil with an aromatic carbon CA content of less than 0.5%, the specific process conditions for the hydrocracking reaction, hydroisomerization dewaxing reaction, and post-hydrogenation refining reaction are as follows:

[0055] The process conditions of the hydrocracking reaction are: the pressure is ...

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Abstract

The invention relates to the technical field of petrochemical engineering, and provides paraffin-based transformer oil and a preparation method thereof. The paraffin-based transformer oil comprises II type base oil, an aromatic hydrocarbon compound and an antioxidant, wherein the II type base oil is prepared from second vacuum wax oil, third vacuum wax oil and coker gas oil as mixed raw materials through hydrocracking reaction, heterogeneous hydrogenation dewaxing reaction, refining reaction after hydrogenation, and then fractionation; the aromatic carbon CA content of the II type base oil is smaller than 0.5%; the aromatic hydrocarbon compound is a monocyclic aromatic hydrocarbon compound and / or a bicyclic aromatic hydrocarbon component; the antioxidant is T501; the ratio of the II type base oil to the aromatic hydrocarbon compound is 3:1 to 500:1; the mass ratio of the antioxidant T501 is 0.01-0.08%. The preparation method of the paraffin-based transformer oil comprises the following steps of preparation of the II type base oil, preparation of a mother liquid, preparation of mixed oil, post-treatment of the mixed oil and the like. The paraffin-based transformer oil has the characteristics of excellent oxidation resistance, good gassing performance, low cost and the like.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a paraffin-based transformer oil and a preparation method thereof. Background technique [0002] Transformer oil refers to unused mineral insulating oil with and without additives obtained from petroleum fractions as raw materials and refined for transformers, switches and similar electrical equipment that require oil as an insulation and heat transfer medium. According to the composition of mineral insulating oil, transformer oil is divided into two types: paraffin-based transformer oil and naphthenic transformer oil. [0003] Paraffin-based transformer oil uses paraffin-based mineral oil as raw material, and its paraffin content exceeds 60%. Mineral oil base oils currently used for blending paraffin-based transformer oils include Group I base oils and Group II base oils according to the API classification standard of the American Petroleum Institute. Group I base oils are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M101/00C10M177/00C10N40/16C10N30/08C10N30/10
Inventor 王泽爱李鸣宫卫国邓诗铅黄小珠李宁
Owner CNOOC ENERGY TECH & SERVICES
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