Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of insulating oil with high oxidation stability

A stable and insulating oil technology, applied in the field of insulating oil preparation, can solve the problem of poor oxidation stability of ester insulating oil, and achieve the effect of low dielectric loss and low pour point

Pending Publication Date: 2022-03-08
国网黑龙江省电力有限公司佳木斯供电公司 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor oxidation stability of ester insulating oil, the present invention proposes a preparation method of insulating oil with high oxidation stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of insulating oil with high oxidation stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the insulating oil with high oxidation stability of the present invention is carried out according to the following steps:

[0023] Step 1, preparing the esterification product: mixing trimethylolpropane, fatty acid, catalyst and xylene, heating in an oil bath under a nitrogen protection environment, and stirring magnetically at the same time to obtain the esterification product;

[0024] Step 2, purification of the esterification product: centrifuge the esterification product obtained in Step 1 to remove the solid catalyst, and distill under reduced pressure to remove residual fatty acid and trimethylolpropane.

[0025] Step 3, mixing the purified esterification product, resveratrol, diphenylmethane and ethanol, and boiling.

[0026] The mol ratio of described fatty acid, resveratrol, diphenylmethane and ethanol is 3:1:0.5:1;

[0027] The mol ratio 1:1 of described stannous chloride and ethanol;

[0028] The temperature of the oil bath is 15...

Embodiment 2

[0036] The preparation method of the insulating oil with high oxidation stability of the present invention is carried out according to the following steps:

[0037] Step 1, preparing the esterification product: mixing trimethylolpropane, fatty acid, catalyst and xylene, heating in an oil bath under a nitrogen protection environment, and stirring magnetically at the same time to obtain the esterification product;

[0038] Step 2, purification of the esterification product: centrifuge the esterification product obtained in Step 1 to remove the solid catalyst, and distill under reduced pressure to remove residual fatty acid and trimethylolpropane.

[0039] Step 3, mixing the purified esterification product, resveratrol, diphenylmethane and ethanol, and boiling.

[0040] The mol ratio of described fatty acid, resveratrol, diphenylmethane and ethanol is 3:1:0.6:1;

[0041] The mol ratio 1:1 of described stannous chloride and ethanol;

[0042] The temperature of the oil bath is 14...

Embodiment 3

[0050] The preparation method of the insulating oil with high oxidation stability of the present invention is carried out according to the following steps:

[0051] Step 1, preparing the esterification product: mixing trimethylolpropane, fatty acid, catalyst and xylene, heating in an oil bath under a nitrogen protection environment, and stirring magnetically at the same time to obtain the esterification product;

[0052] Step 2, purification of the esterification product: centrifuge the esterification product obtained in Step 1 to remove the solid catalyst, and distill under reduced pressure to remove residual fatty acid and trimethylolpropane.

[0053] Step 3, mixing the purified esterification product, resveratrol, diphenylmethane and ethanol, and boiling.

[0054] The mol ratio of described fatty acid, resveratrol, diphenylmethane and ethanol is 3:1:0.4:1;

[0055] The mol ratio 1:1 of described stannous chloride and ethanol;

[0056] The temperature of the oil bath is 14...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of insulating oil, in particular to a preparation method of insulating oil with high oxidation stability. In order to solve the problem of poorer oxidation stability of ester insulating oil, the method comprises the following steps: mixing trimethylolpropane, fatty acid, a catalyst and xylene, and carrying out oil bath heating and magnetic stirring in a nitrogen protection environment to obtain an esterification product; the esterification product obtained in the first step is centrifuged to remove the solid catalyst, reduced pressure distillation is performed to remove residual fatty acid and trimethylolpropane, and the esterification product, resveratrol, diphenylmethane and ethyl alcohol are mixed and boiled. The prepared insulating oil with high ignition point, low dielectric loss, low pour point and high oxidation stability is suitable for a low-temperature environment and a high-temperature environment, and the yield can reach 95% or above.

Description

technical field [0001] The invention relates to a preparation method of insulating oil. Background technique [0002] Transformers can be divided into oil-immersed transformers, gas-insulated transformers, etc. according to the winding insulation and cooling methods. Gas-insulated transformers are still in the process of research and development in China and have not been widely used. Oil-immersed self-cooling transformers are widely used in the power industry. Insulation technology determines the failure ratio of oil-immersed transformers and is the key to ensuring stable power operation. Ester oil insulating oil has excellent electrical properties, good stability, and is a non-flammable polar liquid. It is used in capacitors and transformers to improve the capacity and safety of capacitors and transformers. However, due to the high toxicity of PCBs, their use has been restricted or banned. Ester oil insulating oil is induced by metal, light or heat, and oil molecules l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N40/16
CPCC10M169/04C10M177/00C10M2203/06C10M2207/021C10M2207/024C10M2207/2835C10N2040/16
Inventor 赵海清王谦齐乾坤刘梦洋康力文张继超罗辑贾志勇张扬徐明蔡广达徐毓皓张学川
Owner 国网黑龙江省电力有限公司佳木斯供电公司