Method for improving gassing resistance of transformer oil and equipment for producing transformer oil

A technology for transformer oil and anti-gas evolution, applied in the petrochemical field, can solve the problems of difficult industrialization, high catalyst selectivity requirements, and difficulty in controlling the depth of hydrogenation.

Active Publication Date: 2012-09-19
PETROCHINA CO LTD
View PDF8 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can produce qualified ultra-high voltage transformer oil, there will inevitably be high investment in equipment. At the same time, the production of ultra-high voltage transformer oil by the all-hydrogen method also has high requirements for catalyst selectivity and difficulty in controlling the depth of hydrogenation. Difficulties in realizing industrialization and other issues

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
  • Method for improving gassing resistance of transformer oil and equipment for producing transformer oil
  • Method for improving gassing resistance of transformer oil and equipment for producing transformer oil
  • Method for improving gassing resistance of transformer oil and equipment for producing transformer oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] For the first time, the naphthenic second-line hydrodeacidification oil and the extracted oil of the transformer oil fraction are mixed as the raw material oil at a mass ratio of 3.0:7.0, and the solvent extraction and separation process is carried out, and then the solvent refining method of the present invention is implemented.

[0025] (1) The first solvent extraction and separation process

[0026] The refining conditions of the extraction tower 1 are as follows: the temperature at the top of the tower is 55° C., the temperature at the bottom of the tower is 35° C., and the mass ratio of the solvent furfural to the raw material oil is 2:1. A part of the raffinate obtained after stripping and removing the solvent from the raffinate at the top of the extraction tower 1 is returned to the extraction tower 1 through pipelines, and the specific conditions are shown in (2) below.

[0027] (2) solvent refining process of the present invention

[0028]Naphthenic second-lin...

Embodiment 2

[0030] For the first time, the furfural extracted oil of naphthenic second-line hydrodeacidification oil is used as raw material oil, and the solvent extraction and separation process is carried out, and then the solvent refining method of the present invention is implemented.

[0031] (1) The first solvent extraction and separation process

[0032] The refining conditions of the extraction tower 1 are: the temperature at the top of the tower is 45° C., the temperature at the bottom of the tower is 35° C., and the mass ratio of the solvent furfural to the raw oil lubricating oil solvent extraction oil is 2.5:1. Part of the raffinate obtained from the top of the extraction tower 1 is returned to the extraction tower 1 through the pipeline, and the specific conditions are shown in (2) below.

[0033] (2) solvent refining process of the present invention

[0034] Use transformer oil solvent extracted oil as raw material oil, and carry out furfural refining together with (1) part...

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 belongs to the technical field of petrochemical engineering and discloses a method for improving the gassing resistance of transformer oil and equipment for producing the transformer oil. The equipment is a piece of solvent refining equipment. According to the method, solvent refined extract oil of the transformer oil or a mixture of the solvent refined extract oil of the transformer oil with fraction hydrogenation deacidified oil of naphthenic crude transformer oil is taken as raw oil, a solvent is fed from the upper part of an extraction tower, the raw oil is fed from the lower part of the extraction tower, partial raffinate oil or raffinate liquid returns to the extraction tower from the lower parts of a raw oil inlet and a solvent inlet for solvent refining, refined oil is obtained after the raffinate liquid at the tower top is subjected to steam stripping to recover the solvent, liquid phase denitrification and clay refining are then carried out to obtain base oil or gassing resistant components of extra-high-voltage transformer oil, and finally, the base oil of the extra-high-voltage transformer oil is obtained after the gassing resistant components of the extra-high-voltage transformer oil are mixed with the base oil of common transformer oil. By blending the base oil of the extra-high-voltage transformer oil, the extra-high-voltage transformer oil meeting the requirements of SH0040-91 is produced.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a method for improving the anti-gassing performance of transformer oil and equipment for producing transformer oil. Background technique [0002] Transformer oil is a liquid insulating and heat-conducting material used in the electrical industry, and its performance is related to the composition of hydrocarbons it contains. For example, straight-chain alkanes have a high pour point, poor low-temperature fluidity, and poor gassing resistance. They are non-ideal components in transformer oils. Aromatics have good gassing resistance, but polycyclic aromatic hydrocarbons have poor oxidation stability; gassing resistance It is an important indicator of transformer oil, especially ultra-high voltage transformer oil. The order of hydrocarbon anti-gassing performance from strong to weak is aromatic hydrocarbon > naphthenic hydrocarbon > isoparaffin > 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): C10G53/08
Inventor 刘海澄黄鹤年成春王宏德张华孙井侠庞娱张东明
Owner PETROCHINA CO LTD
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