A kind of preparation method and application of synthetic organic ester type base oil

A technology for base oil and organic ester, which is applied in the preparation and application field of synthetic organic ester type base oil, can solve the problems of high acid value, high dielectric loss, high freezing point at low temperature and high ignition point, and achieves stable source of raw materials and simple synthesis process. , the effect of fast reaction rate

CN112174822BActive Publication Date: 2022-05-31CHANGSHA LONG YUAN ELECTROMECHANICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-31

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Abstract

The invention relates to a preparation method and application of a synthetic organic ester base oil. The reactants and auxiliary reagents are weighed to carry out esterification reaction. The reactants are polyhydric alcohols and fatty acids according to the molar ratio of hydroxyl and carboxyl groups of 1:4- 5 mixed raw materials, the auxiliary reagents include the following raw materials in weight percentages: 5-15% water-carrying agent, 10-20% decolorizing agent, 0.1-2% catalyst, 0.1-2% antioxidant; The alcohol is pentaerythritol; the fatty acid is composed of one or more of n-valeric acid, n-caproic acid, n-heptanoic acid, n-octanoic acid, n-nonanoic acid, isooctanoic acid and isononanoic acid. The product prepared by the method of the invention is used as the base oil of the transformer insulating oil, not only can meet the performance requirements of the transformer insulating oil, but also has good biodegradability, and the preparation process has the characteristics of high production efficiency, low emission and the like.
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Description

technical field

[0001] The present invention relates to a preparation method and application of synthetic organic ester type base oil. Background technique

[0002] At present, many cities in China have formulated plans for the construction and development of urban rail transit. By the end of 2020, more than 60 cities across the country will have more than 8,000 km of operating lines. Rail vehicles are fast, safe, punctual, energy-saving, environmentally friendly and comfortable. The first choice for travel, the continuous upgrading and innovation of high-speed rail vehicles has also put forward new requirements for traction transformer oil. Transformer oil is an important part of the safe and stable operation of the transformer. Its main functions in oil-immersed transformers are: transformer insulation; medium heat transfer; protection of transformer internal materials from moisture and oxygen erosion.

[0003] Transformer insulating oil is usually made of deeply refined ...

Examples

Embodiment 1- Embodiment 3

[0027] A preparation method for synthesizing an organic ester type transformer insulating oil base oil adopts the following synthesis process:

[0028] Step 1, catalyst preparation: dissolve the water-soluble metal salt catalyst with a small amount of water in the container, add X-ρ type activated alumina with porous structure, porous alumina ceramics, nano-α-nano alumina ceramic powder coating, The four-needle nano-zinc oxide ceramic coating is mixed with particles and a trace amount of low-boiling point wetting agent, stirred evenly, and left to stand under positive pressure to make the metal salt catalyst settle and crystallize.

[0029] Step 2, the prefabrication of the reaction system: Embodiment 1-Example 3 carry out the synthesis of the base oil according to the formula in the following table 1 respectively, pentaerythritol and fatty acid are batched in molar percentages, and other components are batched by mass percentage, first take pentaerythritol, 60% The fatty acid...