CN101955845A

CN101955845A - Method for regenerating waste transformer oil

Info

Publication number: CN101955845A
Application number: CN2009101814542A
Authority: CN
Inventors: 缪传云
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-16
Filing date: 2009-07-16
Publication date: 2011-01-26

Abstract

The invention relates to a method for regenerating waste transformer oil, which comprises the following steps of: washing with concentrated sulfuric acid after the waste transformer oil is heated to precipitate most of contaminants, corroding and carbonizing metal ingredients in the waste oil, and then filtering, washing with sodium carbonate, neutralizing the pH value of the oil body, and finally adsorbing and decolorizing by using activated clay, and filtering to obtain finished products.

Description

Useless transformer oil regeneration

Affiliated technical field:

The invention provides a kind of renovation process of useless transformer oil, specifically refer to utilize the depleted transformer oil after manipulation of regeneration, to change purposes, substitute from Dormant oils in some field.

Background technology:

Transformer oil will be changed after using certain time limit in the transformer, and the new transformer oil of quilt is replaced out, be useless transformer oil.Can work as oil fuel, but calorific value is low and produce a large amount of dense smoke polluted airs; Outwell also contaminate environment of not only waste as waste oil.Aspect plastic working industry and tailoring machinery lubricated, to consume a large amount of industrial white mineral oils every year.And the quality standard of employed white mineral oil is not high aspect these two.

Summary of the invention:

The invention provides a kind of renovation process of useless transformer oil, promptly utilize the depleted transformer oil, after the regeneration processing treatment, the employed industrial white mineral oils of industry such as substituted for plastic processing.

Technical scheme:

The technical solution adopted in the present invention is: the depleted transformer oil is settled out big portion dirt through heating after, use vitriol oil pickling, the metal ingredient in the waste oil is corroded carbonization, leaches, use the yellow soda ash alkali cleaning again, in and the oil body pH value, use the atlapulgite adsorption bleaching at last, leach and be finished product.

The invention has the beneficial effects as follows: recycle the depleted renewable resources, reduce the pollution of industrial raw material consumption and waste air, environment.

Embodiment:

At first, the transformer oil that will give up places reactor or metal vessel, and the 90-100C that heats left standstill 24 hours, was settled out most of dirt;

Second step was carried out pickling: the vitriol oil (H that uses 92%-98% ₂SO ₄), by weight percentage, vitriol oil consumption is the 1%-2% of oil body, and oil body is slowly being added sulfuric acid under the condition of stirring at a slow speed, the time was controlled at about 30 minutes.Add behind the sulfuric acid again the middling speed stir about 30 minutes, left standstill 10 hours, precipitate, isolate the carbide of metal ingredient;

The 3rd step alkali cleaning neutralization: the oil body of isolating carbide this moment is for acid, must neutralize can use for neutrality.Get the yellow soda ash (Na of the 1%-2% of oil body weight ₂CO ₃), oil body is being joined in the oil body under the condition of stirring at a slow speed, the middling speed stir about is 30 minutes again, leaves standstill 4 hours, and the pH value that records oil body with extensive test paper is neutral getting final product;

The 4th step adsorption bleaching: the original color relation of waste oil is darker, and through the effect of the vitriol oil and soda ash, the color of oil body can be darker again, therefore must its decolouring is just wider for light use range.Oil body is warmed to about 130 ℃, gets the atlapulgite of oil body weight 3%-4%, under to oil body middling speed condition of stirring, add carclazyte, restir is about 1 hour.Stop to stir, oil body is static to keep 110-120 ℃ of temperature after about 10 hours, cools off, precipitates, leaches to be and be close to colourless faint yellow finished product.

Claims

1. useless transformer oil regeneration, the depleted transformer oil is settled out big portion dirt through heating after, use vitriol oil pickling, use the yellow soda ash alkali cleaning again, in and the oil body pH value, use the atlapulgite adsorption bleaching at last, it is characterized in that: use the vitriol oil that the metal ingredient carbonization in the waste oil is precipitated, use yellow soda ash to implement the pH value neutralization, use the atlapulgite adsorption bleaching again, the recovered oil that makes is close to pure colourless.

2. useless transformer oil regeneration according to claim 1 is characterized in that: described useless transformer oil regeneration, be with the depleted transformer oil after the regeneration processing treatment, the employed industrial white mineral oils of industry such as substituted for plastic processing.

3. useless transformer oil regeneration according to claim 1, its feature also is: described the depleted transformer oil is settled out big portion dirt through heating, the characteristic that raises and reduce with temperature for the viscosity that utilizes oil body, pass through earlier and heat, precipitate, isolate most of dirt in the waste oil, to reduce the consumption of industrial chemicals.