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Transformer oil and preparation method thereof

A technology for transformer oil and naphthenic base oil, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems of poor anti-gassing performance improvement, not in line with the development direction of transformer oil, etc. The effect of improving gas performance

Active Publication Date: 2018-01-23
CNOOC TAIZHOU PETROCHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transformer oil produced by this process has a poor effect on improving the anti-gassing performance. At the same time, this document uses a benzotriazole additive, which is restricted by the new IEC 60296-2012 standard and does not conform to the current development direction of transformer oil.

Method used

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  • Transformer oil and preparation method thereof

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Effect test

Embodiment 1

[0019] 1. Preparation of paraffinic base oil fractions

[0020] Firstly, the fraction of unsaturated chain hydrocarbons and monocyclic and polycyclic aromatic hydrocarbons with a viscosity of 5~9 (100°C) and a distillation range of 360~520°C (in this fraction, unsaturated chain hydrocarbons and monocyclic and polycyclic aromatic hydrocarbons account for 30-55% of the mass of the distillate) is used as the raw material through the hydrocracking reactor. During the reaction, the reaction temperature is 380~420°C, the reaction pressure is 14~16MPa, the reaction hydrogen oil volume ratio is 800~1600, and the space velocity is 0.4~1.0 / h; then through the hydroisomerization reactor, the reaction temperature in the process is 320~390℃, the reaction pressure is 14~16MPa, the reaction hydrogen oil ratio is 600~1200, and the space velocity is 0.6~1.2 / h; then hydrogenation Refining reactor, during the reaction, the reaction temperature is 230~290℃, the reaction pressure is 14~16MPa, the...

Embodiment 2

[0030] The preparation methods of paraffin base oil fraction, naphthenic base oil and transformer oil in this embodiment are all the same as in embodiment 1.

[0031] The difference from Example 1 is that in the transformer oil raw material prepared in this example, in terms of mass percentage, paraffinic base oil fraction accounts for 17.6%, alkylnaphthalene accounts for 0.8%, dodecylbenzene accounts for 5%, 2, 6-di-tert-butyl-p-cresol accounts for 0.3%, which is supplemented to 100% with naphthenic base oil.

Embodiment 3

[0033] The preparation methods of paraffin base oil fraction, naphthenic base oil and transformer oil in this embodiment are all the same as in embodiment 1.

[0034] The difference from Example 1 is that in the transformer oil prepared in this example, by mass percentage, paraffinic base oil fractions account for 25%, alkylnaphthalene accounts for 1%, dodecylbenzene accounts for 6%, 2,6 -Di-tert-butyl-p-cresol accounts for 0.35%, which is supplemented to 100% with naphthenic base oil.

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Abstract

The invention relates to transformer oil and a preparation method thereof. The transformer oil is prepared by taking naphthenic based and paraffin based decompression distillated oil as raw materials,using a three-section high-pressure hydrogenation production process and adding a combined aromatic additive and an antioxidant. The transformer oil comprises the following components in percentagesby mass: 15-25% of paraffin based base oil fraction, 4-7% of the combined aromatic additive, 0.3+ / - 0.05% of an antioxidant and the balance of the naphthenic based base oil. The carbon type structureand gassing resistance of the transformer oil are quite excellent, and the low-temperature property and oxidation resistance of the transformer oil are higher than those of existing products in markets.

Description

technical field [0001] The application relates to the field of chemical industry, in particular to a transformer oil and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, my country's electricity demand has grown rapidly, and the power grid construction has entered a comprehensive promotion of west-to-east power transmission, north-south mutual supply, and national networking. In order to meet large-capacity, long-distance power transmission, high-voltage direct current transmission and higher voltage Level AC transmission is the main development direction of power transmission and transformation technology. DC transmission has the advantages of long transmission distance, good regulation performance, low overvoltage level, and small line loss. It is especially suitable for long-distance high-power transmission, interval grid interconnection peak regulation, submarine cable transmission, etc. [0003] The DC conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/10C10N40/16
Inventor 王海军夏强斌谢晓恩李琰刘燕郭春梅刘杰乔琦吴义志林建荣
Owner CNOOC TAIZHOU PETROCHEM CO LTD
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