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Natural ester base oil and preparation method thereof, and natural ester insulating oil and application thereof

A technology of natural esters and base oils, which is applied in the preparation of carboxylate esters, organic insulators, organic liquid insulators, etc., and can solve problems such as fire hazards, poor fluidity, and difficult to apply in low-temperature areas

Pending Publication Date: 2021-12-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current natural ester insulating oil is mainly derived from natural oil crops, such as soybeans, rapeseed, camellia seeds and sunflower seeds. Pure insulating oil, but the natural ester insulating oil prepared by this method contains stearic acid, which makes the natural ester insulating oil have a high pour point and is difficult to apply in low temperature areas. Conducive to heat dissipation of power equipment, easy to cause fire, endangering society and personal safety

Method used

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  • Natural ester base oil and preparation method thereof, and natural ester insulating oil and application thereof
  • Natural ester base oil and preparation method thereof, and natural ester insulating oil and application thereof

Examples

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preparation example Construction

[0022] The invention provides a kind of preparation method of natural ester base oil, comprises the steps:

[0023] (1) Distill and concentrate the tall oil of wood pulp to obtain sulfate soap;

[0024] (2) mixing the sulfate soap that described step (1) obtains with phosphoric acid, carries out acidification treatment, obtains acidification product;

[0025] (3) vacuum rectifying the acidified product obtained in the step (2) to obtain a rectified product;

[0026] (4) mixing the rectified product obtained in the step (3) with glycerin, a catalyst and water to carry out an esterification reaction to obtain a natural ester base oil.

[0027] Unless otherwise specified, the present invention has no special limitation on the source of each component, and commercially available products well known to those skilled in the art can be used.

[0028] In the invention, the tall oil of the wood pulp is distilled and concentrated to obtain the sulfate soap.

[0029] In the present in...

Embodiment 1

[0073] (1) Washing and filtering the tall oil of wood pulp successively, and then distilling and concentrating at 90° C. for 2 hours to obtain sulfate soap;

[0074] (2) Mix sulfate soap with phosphoric acid with a mass fraction of 33% (the mass ratio of phosphoric acid and sulfate soap is 5:100), carry out acidification treatment at 25°C for 30min, then add high-purity water with 20% product volume, and stir at 80°C 30min, stand for 2h, separate the water phase, and obtain the acidified product;

[0075] (3) Vacuum rectification of the acidified product at 100° C. and 8 Pa to obtain the rectification product oleic acid;

[0076] (4) The rectification product oleic acid is mixed with glycerin (the volume ratio of glycerol and rectification product is 2:1), lipase (the mass ratio of lipase and rectification product is 2:100) and water (water and rectification product are 2:100) The mass ratio of the product is 5:100) mixed, stirred and reacted at 60°C for 12h (the conversion r...

Embodiment 2

[0078] In the natural ester base oil prepared in Example 1, 0.3% of butylated hydroxyanisole and 0.01% of metal deactivator Irgamet39 were added and mixed uniformly to obtain natural ester insulating oil.

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Abstract

The invention provides natural ester base oil and a preparation method thereof as well as natural ester insulating oil and application thereof, belonging to the technical field of insulating oil. The preparation method comprises the following steps: distilling and concentrating wood-pulp floating oil to obtain sulfate soap, mixing the sulfate soap with phosphoric acid, conducting acidifying, carrying out vacuum rectification, and carrying out an esterification reaction to obtain the natural ester base oil. According to the invention, the sulfate soap is acidized by phosphoric acid, unsaponifiable matters are separated, and then esterification is carried out to prepare the natural ester base oil; the main component of the prepared natural ester base oil is triolein and / or trilinolein, and the prepared natural ester base oil has low pour point and kinematic viscosity. Results of embodiments show that the kinematic viscosity of the natural ester insulating oil at 100 DEG C is 7.735 mm<2> / s, the kinematic viscosity at 40 DEG C is 32.01 mm<2> / s, and the pour point is -25 DEG C. In addition, wood-pulp floating oil is adopted as a raw material, so the waste can be turned into wealth, resources are saved, and additional economic values are generated.

Description

technical field [0001] The invention belongs to the technical field of insulating oil, and in particular relates to a natural ester base oil, a preparation method thereof, a natural ester insulating oil and an application thereof. Background technique [0002] Insulating oil is widely used in various power equipment, especially transformers, and generally plays the role of insulation and heat dissipation. Traditional insulating oil is mostly mineral insulating oil, the main component is a mixture of various hydrocarbons, which has the advantages of low price and good physical, chemical and dielectric properties, but its ignition point is low, fire resistance is poor, biodegradation is low, and environmental protection is relatively low. Difference. Natural ester insulating oil has the characteristics of high ignition point, good fire resistance, high degree of biodegradation, and good environmental protection, so it is widely used. [0003] The current natural ester insula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38C07C67/08C07C69/533C10M169/04H01B3/20H01B3/32C10N40/00
CPCC10M105/38C07C67/08C10M169/045H01B3/20H01B3/32C10M2207/2835C10M2207/046C10M2215/223C10N2040/48C07C69/533
Inventor 李华强张晨刘星伟陈卓正钟力生高景晖于钦学
Owner XI AN JIAOTONG UNIV