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Transformer oil composition, transformer oil, and preparation method of transformer oil

A transformer oil and composition technology, which is applied in the field of transformer oil, can solve the problems of increased cost of lubricating oil products, low viscosity index, high pour point, etc., and achieve good oxidation stability, stable oil properties, and uniform quality.

Inactive Publication Date: 2017-06-20
JIANGSU OXIRANCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mineral oil base oils currently used to formulate paraffin-based transformer oils include Group I base oils and Group II base oils according to the API classification standard of the American Petroleum Institute. Transformer oils formulated with paraffin-based mineral base oils have excellent oxidation stability, but There is a problem that hydrogen gas is easily precipitated under high voltage, which threatens the safety of equipment; naphthenic transformer oil is based on naphthenic mineral oil, and its naphthenic content exceeds 50%, which has better gas evolution performance, but it is easy to Oxidation, it is necessary to introduce a large amount of antioxidants to inhibit the oxidation of transformer oil and prolong the service life
[0004] Compared with synthetic base oils such as PAO, mineral base oils have a higher pour point and a lower viscosity index. It is necessary to add a certain pour point depressant to solve the problem of limited use conditions, but on the one hand, this will lead to an increase in the cost of lubricating oil products. On the other hand, the addition of pour point depressants has a limited range of reducing the pour point of the product, and it is difficult to produce products with strict requirements on the pour point.

Method used

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  • Transformer oil composition, transformer oil, and preparation method of transformer oil
  • Transformer oil composition, transformer oil, and preparation method of transformer oil
  • Transformer oil composition, transformer oil, and preparation method of transformer oil

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Preparation of Hyperbranched Polyethylene

[0042] Add TaCl to a 300 mL autoclave liner equipped with a Teflon magnetic stir bar 5 (0.4mmol), cocatalyst EtAlCl 2 (2.0mmol), solvent hexane 40ml. Replace the atmosphere of the autoclave with nitrogen three times, and evacuate once, heat to 115°C, continuously add ethylene at a pressure of 5MPa, stir at 115°C for 8 hours, then directly switch the ethylene atmosphere to hydrogen, and react under the hydrogen atmosphere until the hydrogenation is complete , vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. Add 80ml of chloroform to dilute the reaction product, filter the product and pass through a neutral alumina column or a silica gel column to remove catalyst residues, and obtain 17.5g of oily hyperbranched polyethylene after distilling off the solvent and ethylene oligomers at room temperature and under vacuum. The weight average molecular weight of the oily hyperbranc...

Embodiment 2

[0046] Preparation of Hyperbranched Polyethylene

[0047] Add TaCl to a 300 mL autoclave liner equipped with a Teflon magnetic stir bar 5 (0.6mmol), cocatalyst EtAlCl 2 (2.0mmol), solvent chlorobenzene 40ml, selectivity improver FeCl 3 (3.0 mmol). Replace the atmosphere of the autoclave with nitrogen three times, and evacuate once, heat to 105°C, continuously add ethylene at a pressure of 5MPa, stir at 105°C for 10h, then directly switch the ethylene atmosphere to hydrogen, and react under the hydrogen atmosphere until the hydrogenation is complete , vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. Add 80ml of chloroform to dilute the reaction product, filter the product and pass through a neutral alumina column or a silica gel column to remove catalyst residues, and distill off the solvent and ethylene oligomers at room temperature under vacuum to obtain 21.2g of oily hyperbranched polyethylene. The weight average molec...

Embodiment 3

[0051] Preparation of Hyperbranched Polyethylene

[0052] Add TaCl to a 300 mL autoclave liner equipped with a Teflon magnetic stir bar 5 (0.80mmol), promoter EtAlCl 2 (0.80mmol), solvent chlorobenzene 40ml. Replace the atmosphere of the autoclave with nitrogen for three times, and evacuate once, heat to 95°C, continuously add ethylene at a pressure of 5MPa, stir at 95°C for 12 hours, then directly switch the ethylene atmosphere to hydrogen, and react under the hydrogen atmosphere until the hydrogenation is complete , vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. Add 80ml of chloroform to dilute the reaction product, filter the product and pass through a neutral alumina column or a silica gel column to remove catalyst residues, and obtain 19.8g of oily hyperbranched polyethylene after distilling off the solvent and ethylene oligomers at room temperature and under vacuum. The weight average molecular weight of the oily ...

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Abstract

The invention provides a transformer oil composition, a transformer oil, and a preparation method of the transformer oil. The transformer oil composition comprises hyperbranched polyethylene base oil and an additive, wherein the weight average molecular weight of the hyperbranched polyethylene base oil is 250-1200, and the branching degree is 0.15-0.5. The transformer oil has stable properties, uniform quality, high flash point and low pour point without adding a viscosity index improver or a pour point depressant, also has good oxidation stability, gassing property and heat conduction property, can meet large capacity, common and ultrahigh voltage grade and requirements of miniature power transformers, and can be used for a long term.

Description

technical field [0001] The invention relates to transformer oil, in particular to a transformer oil composition with good insulation performance, heat dissipation performance and oxidation resistance, transformer oil and a preparation method thereof. Background technique [0002] Transformer oil refers to a type of insulating oil used for insulation, heat dissipation and arc suppression in oil-filled electrical equipment such as transformers, reactors, transformers, bushings, and oil switches. Electrical insulating oil can be divided into mineral insulating oil, synthetic oil insulating oil and mineral oil-synthetic oil mixed insulating oil according to its composition and properties. Mineral type insulating oil is made from petroleum fractions through different processing techniques; synthetic oil type insulating oil is made of various organic raw materials through synthesis and other processes, such as alkylbenzene, alkylnaphthalene, silicone oil, esters, etc.; mixed Type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N20/02C10N20/04C10N20/06C10N30/02C10N30/10C10N40/16
CPCC10M169/04C10M177/00C10M2201/062C10M2201/10C10M2205/0225C10M2207/026C10M2207/281C10M2207/283C10M2215/065C10M2215/08C10M2215/223C10M2215/224C10M2219/044C10M2219/106C10M2223/049C10M2223/08C10N2020/02C10N2020/04C10N2020/06C10N2020/071C10N2030/02C10N2030/10C10N2040/16C10N2020/069C10N2010/04
Inventor 朱建民刘兆滨董振鹏顾晓华吴会敏
Owner JIANGSU OXIRANCHEM CO LTD
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