Transformer oil gassing-resistant additive and preparation method thereof

A transformer oil, anti-gassing technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of difficult operation, high pour point, low yield of target products, etc., and achieve single-ring and double-ring aromatics High content, low acid value and polycyclic aromatic hydrocarbon content, excellent anti-gassing performance
CN104862006AActive Publication Date: 2015-08-26CHINA NAT OFFSHORE OIL CORP +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2015-08-26

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Abstract

The invention provides a transformer oil gassing-resistant additive and a preparation method thereof. The preparation method comprises steps as follows: extract oil refined by a naphthenic base transformer oil fraction solvent is taken as a raw material and is sequentially subjected to liquid phase denitrification processing and adsorption refining to obtain denitrified and refined oil; the denitrified and refined oil is subjected to hydroprocessing-hydrofinishing processing to obtain hydrofinished oil, the hydrofinished oil is redistilled, and distillate at the temperature higher than 280 DEG C is collected to obtain the transformer oil gassing-resistant additive. According to the method, the extract oil refined by the naphthenic base transformer oil fraction solvent with low additional value is taken as the raw material to prepare the transformer oil gassing-resistant additive with high additional value, and the transformer oil gassing-resistant additive has the characteristics of high content of monocyclic and dicyclic aromatic hydrocarbon, excellent gassing resistance, extremely low content of sulfur, nitrogen and polycyclic aromatic hydrocarbon, extremely low acid value and excellent oxidation stability and can be used in a blending component of high-grade transformer oil.
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Description

technical field

[0001] The invention belongs to the field of petrochemical industry, and in particular relates to a transformer oil anti-gassing additive and a preparation method thereof. Background technique

[0002] Transformer oil is the most important variety of electrical insulation oil. With the development of economy, China has become the world's largest producer of transformers, accounting for about half of the world's total output. At the same time, due to the national conditions of power transmission from west to east, a number of power transmission and transformation lines with the highest voltage level in the world have been built in China and will be further developed. Transformer oil has become a lubricating oil product with rapid growth in output, continuous improvement in quality, and continuous emergence of new varieties in China.

[0003] Under the action of a high-voltage electric field in transformer oil, the straight-chain alkanes in the oil will relea...

Claims

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