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High-ignition-point transformer oil and preparation method thereof

A transformer oil, high ignition point technology, applied in the petroleum industry, lubricating composition, etc., can solve the problems of low safety factor, low flash point, etc., and achieve the effect of high safety performance, not easy to change color, and long service life

Active Publication Date: 2016-12-07
上海中孚油品集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a transformer oil with high ignition point, which solves the problems of low flash point and low safety factor of transformer oil in the prior art

Method used

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  • High-ignition-point transformer oil and preparation method thereof
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Examples

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Effect test

Embodiment 1

[0027] The invention provides a high ignition point transformer oil, which is composed of narrow fraction naphthenic oil, modified vegetable oil, antioxidant, pour point depressant, anti-light sensitive agent and metal passivator. The weight percent of described narrow-cut naphthenic oil in transformer oil is 75%, and the weight percent of described modified vegetable oil in transformer oil is 22%, gets 75% narrow cut naphthenic oil and 22% After the modified vegetable oil is stirred at 50°C for 50 minutes, add clay with a weight percentage of 5% of transformer oil at 100°C, and at the same time carry out stirring, refining and adsorption for 100 minutes until the adsorption reaction is uniform, and the precipitate is filtered through a filter for 2 times. Then add antioxidant additive, pour point depressant, photosensitizer and metal passivator to mix, the mass percentage of described antioxidant additive in described transformer oil is 1.0%, described pour point depressant is...

Embodiment 2

[0037] The invention provides a high ignition point transformer oil, which is composed of narrow fraction naphthenic oil, modified vegetable oil, antioxidant, pour point depressant, anti-light sensitive agent and metal passivator. The weight percent of the narrow fraction naphthenic oil in the transformer oil is 70%, and the weight percent of the modified vegetable oil in the transformer oil is 28%, which is mixed with rapeseed oil, peanut oil and cottonseed oil. Take 70% narrow-fraction naphthenic oil and 28% modified vegetable oil and stir at 55°C for 40 minutes, then add clay with a weight percentage of 6% of transformer oil at 90°C, and stir, refine and adsorb for 90min at the same time until The adsorption reaction is uniform, and after the precipitate is filtered twice by a filter, an antioxidant additive, a pour point depressant, a photosensitizer and a metal passivator are added to mix, and the mass percentage of the antioxidant additive in the transformer oil is 0.5%,...

Embodiment 3

[0047] The invention provides a high ignition point transformer oil, which is composed of narrow fraction naphthenic oil, modified vegetable oil, antioxidant, pour point depressant, anti-light sensitive agent and metal passivator. The weight percent of described narrow fraction naphthenic oil in transformer oil is 80%, and the weight percent of described modified vegetable oil in transformer oil is 18%, by rapeseed oil, peanut oil, cottonseed oil and olive oil mix. Take 80% narrow-fraction naphthenic oil and 18% modified vegetable oil and stir at 55°C for 45 minutes, then add clay with a weight percentage of 3% of transformer oil at 100°C, and carry out stirring, refining and adsorption for 110min at the same time until The adsorption reaction is uniform, and after the precipitate is filtered twice by a filter, an antioxidant additive, a pour point depressant, a photosensitizer and a metal passivator are added to mix, and the mass percentage of the antioxidant additive in the ...

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Abstract

The invention provides a high-ignition-point transformer oil which is composed of base oil, an antioxidant, a pour-point depressant, anti-photosensitivity agent and a metal passivator, wherein the base oil is composed of narrow-fraction cycloalkyl oil and modified vegetable oil. The invention also provides a preparation method of the high-ignition-point transformer oil. The preparation method comprises the following steps: preparing the narrow-fraction cycloalkyl oil; preparing the modified vegetable oil; injecting the narrow-fraction cycloalkyl oil and modified vegetable oil into a reaction kettle, stirring uniformly, carrying out clay refining, filtering, adding the antioxidant additive, pour-point depressant, anti-photosensitivity agent and metal passivator, and carrying out vacuum treatment under the negative pressure of 0.8 KPa by a vacuum pump 1-3 times. The open flash point of the transformer oil can reach 270-320 DEG C, the ignition point reaches 300-350 DEG C, and the breakdown voltage reaches 80-100 KV / 2.5mm. The product has much higher safety performance than the traditional transformer oil. The product quality satisfies the America standard ASTM D 5222-2008.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to transformer oil, in particular to a high ignition point transformer oil and a preparation method thereof. Background technique [0002] Transformer oil refers to a type of insulating oil used for insulation, cooling, information carrier and protection in oil-filled electrical equipment such as transformers, reactors, transformers, bushings, and oil switches. At present, transformers mainly use mineral insulating oil. This kind of transformer oil has good insulation and electrical properties, and the cost is not high. Therefore, it is widely used in the transformer market at present, but the traditional mineral insulating oil has a low ignition point (generally around 170°C) ), the safety factor is not high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a transformer oil with high ignition point, which solves the pr...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/16C10N30/10
CPCC10M169/044C10M2205/02C10M2207/026C10M2207/401C10M2209/084C10M2215/223C10N2030/10C10N2040/16
Inventor 沈庆汪志刚姜文龙
Owner 上海中孚油品集团有限公司
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