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Regeneration method of waste transformer oil

A technology of transformer oil and sodium hydroxide, applied in the direction of lubricating composition, etc., can solve problems such as unusable, environmental pollution, aging, etc., and achieve the effects of reducing environmental pressure, important economic benefits, ensuring purity and performance

Pending Publication Date: 2022-04-12
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Transformer oil is a type of insulating oil used in oil-filled electrical equipment. During long-term use, it will age through oxidation and external pollutants, so t

Method used

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  • Regeneration method of waste transformer oil
  • Regeneration method of waste transformer oil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Put 100g of waste transformer in a small reactor, heat it at 80°C for one hour, then cool it to room temperature and leave it for 24 hours, and filter it with a filter press to remove most of the mechanical impurities to obtain component oil A 1 ;to A 1 Add 1 g of concentrated sulfuric acid to the mixture and stir well to obtain B 1 ; to B 1 Add sodium hydroxide with a concentration of 3%, adjust the pH to 6.3, and obtain C 1 ;to C 1 Add 5g of desulfurizer to it, stir it evenly, filter it with a filter press, and then pass it through the acrylic resin to obtain D 1 ; finally put D 1 After passing through molecular sieves, light yellow regenerated transformer oil is obtained.

Example Embodiment

[0028] Example 2

[0029] Put 100g waste transformer in a small reactor, heat it at 90°C for one hour, then cool it to room temperature and leave it for 24 hours, filter it with a filter press, remove most of the mechanical impurities, and obtain component oil A 2 ;to A 2 Add 5g of concentrated sulfuric acid to it, stir well, get B 2 ; to B 2 Add sodium hydroxide with a concentration of 5%, adjust the pH to 7.2, and obtain C 2 ;to C 2 Add 10g of desulfurizer to it, stir it evenly, filter it with a filter press, and then pass it through the phenolic resin to obtain D 2 ; finally put D 2 After passing through molecular sieves, light yellow regenerated transformer oil is obtained.

Example Embodiment

[0030] Example 3

[0031] Put 100g waste transformer in a small reactor, heat it at 90°C for one hour, then cool it to room temperature and leave it for 24 hours, filter it with a filter press, remove most of the mechanical impurities, and obtain component oil A 3 ;to A 3 Add 3 g of concentrated sulfuric acid to the mixture, stir evenly to obtain B 3 ; to B 3 Add sodium hydroxide with a concentration of 5%, adjust the pH to 7.5, and obtain C 3 ;to C 3 Add 12g of desulfurizer to it, stir it evenly, filter it with a filter press, and then pass it through phenolic resin and acrylic resin to obtain D 3 ; finally put D 3 After passing through molecular sieves, light yellow regenerated transformer oil is obtained.

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Abstract

The invention relates to a regeneration method of waste transformer oil, which comprises the following steps: (1) removing mechanical impurities in the waste transformer oil to obtain oil A; (2) pickling the oil A with concentrated sulfuric acid to obtain oil B; (3) carrying out alkali washing on the oil B with a sodium hydroxide solution to obtain oil C; (4) enabling the oil C to flow through a desulfurizing agent and an adsorbent to obtain oil D; and (5) removing moisture in the oil D by using a molecular sieve to obtain regenerated transformer oil. Compared with the prior art, the method is provided.

Description

technical field [0001] The invention relates to the technical field of waste oil regeneration, in particular to a regeneration method of waste transformer oil. Background technique [0002] Transformer oil is a type of insulating oil used in oil-filled electrical equipment. During long-term use, it will age due to oxidation and external pollutants, so that it cannot be used any longer. The disposal of waste oil, whether dumping, burying or burning, not only causes economic waste, but also causes environmental pollution. However, the effective components in the waste oil are actually very high, and the waste oil treated by a certain process can be turned into valuable regenerated transformer oil. Therefore, providing a regeneration method for waste transformer oil can not only reduce environmental pressure, but also have important economic benefits. Contents of the invention [0003] The purpose of the present invention is to provide a regeneration method for waste transf...

Claims

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Application Information

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IPC IPC(8): C10M175/00
Inventor 韩生薛原王会娟王宸宸晏金灿陈凤飞蔺华林
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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