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Transformer oil base oil and preparation method and applications thereof

A technology for transformer oil and base oil, which is used in base materials, petroleum industry, and multi-stage series-connected refining process treatment, etc. Mild, excellent electrical performance

Active Publication Date: 2012-05-30
CHINA NAT OFFSHORE OIL CORP +2
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  • 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

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

[0045] Embodiment 1, preparation and performance detection of transformer oil base oil

[0046] 1. Preparation of transformer oil base oil

[0047] The test setting was repeated three times, and the performance test results were the average of three copies of product A.

[0048] 1. Hydrogenation pretreatment

[0049] The SZ36-1 normal third-line distillate is subjected to hydrogenation pretreatment to deacidify it. The pretreatment conditions are: hydrogen partial pressure 3.2Mpa, hydrogenation reaction temperature 320°C, volume space velocity 1h -1 , The volume ratio of hydrogen to oil is 280:1.

[0050] 2. Furfural refining

[0051] The SZ36-1 normal third-line distillate oil after hydrogenation pretreatment is subjected to furfural refining, the mass ratio of furfural and SZ36-1 normal third-line distillate oil after hydrogenation pretreatment is 1.2:1, the temperature at the top of the tower is 70°C, the bottom of the tower The temperature was 40°C and a refined oil wa...

Embodiment 2

[0059] Embodiment 2, preparation and performance detection of transformer oil base oil

[0060] 1. Preparation of transformer oil base oil

[0061] The test setting was repeated three times, and the performance test results were the average value of three copies of product B.

[0062] 1. Hydrogenation pretreatment

[0063] The SZ36-1 normal third-line distillate was subjected to hydrogenation pretreatment to deacidify it. The pretreatment conditions were: hydrogen partial pressure 6.4Mpa, hydrogenation reaction temperature 300°C, volume space velocity 1.5h -1 , The volume ratio of hydrogen to oil is 300:1.

[0064] 2. Furfural refining

[0065] The SZ36-1 normal third-line distillate oil after hydrogenation pretreatment is subjected to furfural refining, the mass ratio of furfural and SZ36-1 normal third-line distillate oil after hydrogenation pretreatment is 1.5:1, the temperature at the top of the tower is 80°C, the bottom of the tower The temperature was 50°C and a refi...

Embodiment 3

[0073] Embodiment 3, preparation and performance detection of transformer oil base oil

[0074] 1. Preparation of transformer oil base oil

[0075] The test set was repeated three times, and the performance test results were the average value of three copies of product C.

[0076] 1. Hydrogenation pretreatment

[0077] The SZ36-1 normal third-line distillate was subjected to low-pressure hydrogenation pretreatment to deacidify it. The pretreatment conditions were: hydrogen partial pressure 6.4Mpa, hydrogenation reaction temperature 300°C, volume space velocity 1.5h -1 , The volume ratio of hydrogen to oil is 320:1.

[0078] 2. Furfural refining

[0079] The SZ36-1 normal third-line distillate after hydrogenation pretreatment is subjected to furfural refining, the mass ratio of furfural to the hydrogenation-pretreated SZ36-1 normal third-line distillate is 2.2:1, the temperature at the top of the tower is 100°C, and the bottom The temperature was 70°C and a refined oil was ...

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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 hydropretreatment on SZ36-1 common cut 3 distillate oil for acid removal; 2) performing furfural refining on the SZ36-1 common cut 3 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; 3) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 4) 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 national transformer oil, can provide brand-new base oil of No. 25 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 transform oil has wide market application space.

Description

technical field [0001] The invention relates to a transformer oil base oil and a preparation method and application thereof. 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-oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02C10M101/00
Inventor 付玉娥孙元碧商希红于恩强
Owner CHINA NAT OFFSHORE OIL CORP
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