A kind of non-cycloalkyl high overload transformer oil base oil and preparation method thereof

Abstract

The invention provides a non-cycloalkyl high overload transformer oil base oil and a preparation method thereof, wherein the preparation method of the non-cycloalkyl high overload transformer oil base oil comprises: fractionating the non-cycloalkyl base oil to make the The initial boiling point of the non-cycloalkyl base oil is 290±5°C, and the final boiling point is 420±5°C to obtain the non-cycloalkyl high-overload transformer oil base oil. The invention provides a non-cycloalkyl high-overload transformer oil base oil and a preparation method thereof. The non-cycloalkyl high-overload transformer oil base oil adopts fractional distillation and cutting of the non-cycloalkyl base oil to remove light components and heavy components. , to obtain a base oil with an initial boiling point of 290±5°C and a final boiling point of 420±5°C. This base oil has the advantages of high closed flash point, low kinematic viscosity and low density. The transformer oil prepared by it can be effectively Satisfy the work under the condition of high overload transformer overload capacity, reduce transformer failure.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a non-cycloalkyl high-overload transformer oil base oil and a preparation method thereof. Background technique [0002] The high-overload transformer technology is a new transformer technology launched by State Grid in response to the concentrated electricity consumption of rural power grids. This technology also has requirements for insulating liquid, which stipulates that "transformer insulating liquid should comply with the provisions of GB 2536, and the flash point and ignition point should be higher than the insulation withstand voltage level of the transformer", which meets the requirements of F-class insulating materials, that is, ≥175 °C. Traditional mineral insulating oil has a low closed flash point, generally around 140°C, which cannot meet the requirements of high overload distribution transformers. Due to the influence of the original base oil production process, ther...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a non-cycloalkyl high overload transformer oil base oil and its preparation method to solve the problem of low closed flash point of transformer oil base oil in the prior art