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Anti-gassing component of transformer oil and preparation method of component

A technology for transformer oil and anti-gassing is applied in the field of transformer oil, which can solve the problems of large investment cost and large addition amount, and achieve the effects of good adsorption effect, improvement of gassing property, and high content of aromatic hydrocarbons.

Active Publication Date: 2015-11-25
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the use of a hydrogenation process, which has a large investment cost, and the addition of the prepared gas-separating additive is more than 5%, and the addition is relatively large.

Method used

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  • Anti-gassing component of transformer oil and preparation method of component
  • Anti-gassing component of transformer oil and preparation method of component
  • Anti-gassing component of transformer oil and preparation method of component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the preparation of anti-gassing component of transformer oil

[0034] Using the 230-260°C distillate oil of Suizhong 36-1 crude oil produced by the industrial equipment of CNOOC (Qingdao) Heavy Oil Processing Engineering Technology Research Center Co., Ltd. as raw material (as shown in Table 1), furfural was refined with furfural as a solvent As shown in Table 2, the furfural refining conditions are: tower top temperature 90°C, tower bottom temperature 60°C, solvent-to-raw oil mass ratio 2.5:1, and the extracted furfural refined oil is subjected to complex denitrification-clay activated carbon combination The gassing-resistant components were obtained through the adsorption refining process. The complexation denitrification reaction temperature is 100°C, relative to the total amount of furfural refining extracted oil, the addition of denitrification agent is 0.6%, and the contact time is 30min; The furfural refining extracts the total amount of oil, the a...

Embodiment 2

[0035] Embodiment 2, preparation of transformer oil anti-gassing component

[0036] Using the 230-260°C distillate oil of Suizhong 36-1 crude oil produced by the industrial equipment of CNOOC (Qingdao) Heavy Oil Processing Engineering Technology Research Center Co., Ltd. as raw material (as shown in Table 1), furfural was refined with furfural as a solvent As shown in Table 2, the conditions for furfural refining are: tower top temperature 80°C, tower bottom temperature 60°C, mass ratio of solvent to raw oil is 1.8:1, and the extracted furfural refined oil is subjected to complex denitrification-clay activated carbon combination The gassing-resistant components were obtained through the adsorption refining process. The complex denitrification reaction temperature is 90°C, relative to the total amount of furfural refined oil extracted, the amount of denitrification agent added is 0.5%, and the contact time is 30 minutes; The total amount of the adsorbent is 1%, the clay accoun...

Embodiment 3

[0038] Example 3, Preparation of transformer oil anti-gassing component

[0039] Using the 230-260°C distillate oil of Suizhong 36-1 crude oil produced by the industrial equipment of CNOOC (Qingdao) Heavy Oil Processing Engineering Technology Research Center Co., Ltd. as raw material (as shown in Table 1), furfural was refined with furfural as a solvent As shown in Table 2, the conditions for furfural refining are: tower top temperature 70°C, tower bottom temperature 50°C, mass ratio of solvent to raw oil is 1.5:1, and the extracted furfural refined oil is subjected to complex denitrification-clay activated carbon combination The gassing-resistant components were obtained through the adsorption refining process. The complex denitrification reaction temperature is 90°C, relative to the total amount of furfural refined oil extracted, the amount of denitrification agent added is 0.3%, and the contact time is 30 minutes; The total amount of the adsorbent is 0.5%, clay accounts fo...

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Abstract

The invention discloses an anti-gassing component of transformer oil and a preparation method of the component. The preparation method of the anti-gassing component of the transformer oil comprises steps as follows: 1) distillate is placed in a solvent refining column for solvent refinement, raffinate is collected at the top of the solvent refining column, an extract is collected at the bottom of the solvent refining column, a solvent in the extract is recovered, and extract oil is obtained; 2) the extract oil is subjected to complex denitrification with a denitrification agent and adsorption with an adsorption agent simultaneously, and refined oil, namely, the anti-gassing component of the transformer oil, is collected. The technology is simple, the prepared anti-gassing component is excellent in effect, the gassing property of the transformer oil can be substantially improved, the addition amount in the transformer oil is small (smaller than 5%), and properties, particularly the oxidation stability, of the transformer oil are not affected.

Description

technical field [0001] The invention relates to a transformer oil anti-gassing component and a preparation method thereof, belonging to the technical field of transformer oil. Background technique [0002] At present, my country has entered a period of rapid development of large power grids and UHV power grids, and the demand for special transformer oil for ultra-high voltage transformers has increased. Gassing property is an important index in transformer oil, and the substance that can change the gassing property of transformer oil is called anti-gassing component. In the composition of transformer oil, linear alkanes have poor gassing resistance, and aromatics have good gassing resistance, but too many aromatics, especially polycyclic aromatics, affect the oxidation stability of the product. [0003] In the prior art, CN1438299A discloses a production method of transformer oil anti-gassing additive and its use method. The method uses petroleum distillates with a boiling ...

Claims

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Application Information

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IPC IPC(8): C10G53/08
Inventor 张海洪杨文中蔡烈奎马莉莉秦一鸣郭莎莎孟繁梅陈清涛朱玉龙张翠侦
Owner CHINA NAT OFFSHORE OIL CORP
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