Non-cycloalkyl high-overload base oil for transformer oil and preparation method thereof
A non-cycloalkyl, transformer oil technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problem of low closed flash point, achieve high closed flash point, reduce failure, and low density
Active Publication Date: 2018-11-27
CHINA PETROLEUM & CHEM CORP
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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
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Embodiment Construction
[0017] The non-cycloalkyl high-overload transformer oil base oil and its preparation method proposed by the present invention will be further described in detail below in conjunction with specific examples. According to the following description and claims, the advantages and features of the present invention will be clearer.
[0018] The present invention provides a preparation method of a non-cycloalkyl high-overload transformer oil base oil, which comprises: fractionating the non-cycloalkyl base oil to make the non-cycloalkyl high-overload non-cycloalkyl base oil initial distillation The temperature is 290±5°C and the final boiling point is 420±5°C to obtain the transformer oil base oil. Different from the naphthenic base oil used in the prior art, in the scheme of the present invention, the non-cycloalkyl base oil is selected to prepare the transformer oil, so that the closed flash point is higher, and by adopting the fractionation process, the base oil Carry out cutting, cu...
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Abstract
The invention provides non-cycloalkyl high-overload base oil for transformer oil and a preparation method thereof, wherein the preparation method herein includes: subjecting non-cycloalkyl base oil tofractionation, so that initial boiling point of the non-cycloalkyl base oil reaches 290+ / -5 DEG C, end boiling point reaches 420+ / -5 DEG C, and the non-cycloalkyl high-overload base oil for transformer oil is attained. The non-cycloalkyl high-overload base oil for transformer oil and the preparation method thereof have the advantages that non-cycloalkyl base oil is subjected to fractionation cutting, light components and heavy components are removed, and the base oil with the initial boiling point of 290+ / -5 DEG C and the end boiling point of 420+ / -5 DEG C is obtained; the base oil herein features high closed-up flash point, low kinematic viscosity, low intensity and the like; transformer oil made with the base oil can effectively satisfy operating of an overload transformer under overload capacity, and fewer faults occur to the transformer.
Description
Technical field [0001] The invention belongs to the field of chemical engineering, 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 developed by the State Grid in response to rural power consumption. This technology also has requirements for insulating liquids, stipulating that "transformer insulating liquids should meet the requirements of GB 2536, and the flash point and ignition point should be higher than the insulation withstand voltage rating of the transformer", and meet the requirements of class F 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, the industry has an inherent concept that naphthen...
Claims
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IPC IPC(8): C10M171/00C10M177/00C10N20/02C10N40/16
CPCC10M171/00C10M177/00C10N2020/02C10N2040/16C10N2020/017
Inventor 盛祖红张燕吴海燕曹烨张金芳张贤
Owner CHINA PETROLEUM & CHEM CORP