Transformer oil base oil and preparation method and applications thereof

A technology of transformer oil and base oil, which is applied in base materials, petroleum industry, and multi-stage serial refining process treatment, etc. It can solve the problems of acid slag polluting the environment, small processing capacity, and high cost, and achieves high yield and good conditions Excellent effect of mild and low temperature performance

Inactive Publication Date: 2009-03-18
CHINA NAT OFFSHORE OIL CORP +1
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At first, naphthenic crude oil was used as raw material, and the sulfuric acid-clay refining process was used to produce transformer oil base oil. However, this method has high cost, low yield, small processing capacity, and the most important thing is that a large amount of acid residue is produced to pollute the environment.

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
  • Transformer oil base oil and preparation method and applications thereof
  • Transformer oil base oil and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, preparation and performance detection of transformer oil base oil

[0042] The test setting was repeated three times, and the performance test results were the average of three copies of product A.

[0043] 1. Preparation of transformer oil base oil

[0044] 1. Furfural refining

[0045] The above-mentioned QHD32-6 normal second-line distillate oil is subjected to furfural refining, the mass ratio of furfural and QHD32-6 normal second-line distillate oil is 1.5:1, the temperature at the top of the tower is 70°C, and the temperature at the bottom of the tower is 40°C to obtain refined oil.

[0046] The furfural solvent in the refined oil is removed by a vacuum distillation method, and the conditions of the vacuum distillation are: 0.1kpa, 120° C. to obtain a dealdehyde refined oil.

[0047] 2. Denitrification

[0048] Add 0.3% (mass percentage) denitrification agent to the de-aldehyde refined oil, denitrify at 80° C. for 60 minutes, and then remove the n...

Embodiment 2

[0053] Embodiment 2, preparation and performance detection of transformer oil base oil

[0054] The test setting was repeated three times, and the performance test results were the average value of three copies of product B.

[0055] 1. Preparation of transformer oil base oil

[0056] 1. Furfural refining

[0057] The above-mentioned QHD32-6 normal second-line distillate oil is subjected to furfural refining, the mass ratio of furfural and QHD32-6 normal second-line distillate oil is 1.8:1, the temperature at the top of the tower is 80°C, and the temperature at the bottom of the tower is 50°C to obtain refined oil.

[0058] The furfural solvent in the refined oil is removed by a vacuum distillation method, and the conditions of the vacuum distillation are: 1kpa, 125° C. to obtain a dealdehyde refined oil.

[0059] 2. Denitrification

[0060] Add 0.2% (mass percent) denitrification agent to the de-aldehyde refined oil, denitrify at 90° C. for 45 minutes, and then remove the ...

Embodiment 3

[0065] Embodiment 3, preparation and performance detection of transformer oil base oil

[0066] The test set was repeated three times, and the performance test results were the average value of three copies of product C.

[0067] 1. Preparation of transformer oil base oil

[0068] 1. Furfural refining

[0069] The above-mentioned QHD32-6 normal second-line distillate oil is subjected to furfural refining, the mass ratio of furfural and QHD32-6 normal second-line distillate oil is 3.0:1, the temperature at the top of the tower is 100°C, and the temperature at the bottom of the tower is 70°C to obtain refined oil.

[0070] The furfural solvent in the refined oil is removed by a vacuum distillation method, and the conditions of the vacuum distillation are: 2kpa, 130°C to obtain a dealdehyde refined oil.

[0071] 2. Denitrification

[0072] Adding 0.1% (mass percentage) denitrification agent to the denitrification refined oil, denitrification at 100° C. for 30 minutes, and then...

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

PropertyMeasurementUnit
dew pointaaaaaaaaaa
dielectric loss factoraaaaaaaaaa
Login to view more

Abstract

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method of the base oil of the transformer oil comprises the following steps: 1) performing furfural refining on QHD32-6 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; 2) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 3) adding clay to the denitrogenized refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of the domestic transformer oil, can provide brand-new base oil of high-grade No. 45 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transformer oil has wide market application space.

Description

technical field [0001] The invention relates to a transformer oil base oil, its preparation method and its application. Background technique [0002] Transformer oil refers to a type of transformer oil used in oil-filled electrical equipment such as transformers, reactors, transformers, bushings, and oil switches for insulation, cooling, and arc extinguishing. There are three requirements for the performance of transformer oil: ① good physical properties; ② good electrical properties; ③ good oxidation stability. [0003] Transformer oil base oil is the raw material for the production of transformer oil. The performance of transformer oil depends to a large extent on the performance of the transformer oil base oil. Usually, paraffin-based transformer oil base oil has a high pour point, is easy to oxidize to generate a large amount of acidic compounds, and has a small content of aromatic hydrocarbons, which has some shortcomings in the life of transformer oil, anti-oxidation...

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): C10G53/02C10M101/00
Inventor 付玉娥孙元碧袁慧刘维群李军李文赵元欣
Owner CHINA NAT OFFSHORE OIL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap