Electric oil purification method and device

Abstract

The invention discloses an electric oil purification method and an electric oil purification device and belongs to an electro-adsorption deionization technology. Under a constant direct current electric field, collection media and ions in oil liquid form a double electric layer to enrich the ions so that the oil is removed from the oil liquid. In the electric oil purification device, an oil tank is connected with the positive electrode of an external power supply; a core column is connected with the negative electrode of the external power supply; the negative electrode of a metal net is connected with the core column; the positive electrode of the metal net is connected with the oil tank; the collection media are filled in the oil tank; and an oil outlet pipe and an oil inlet pipe are connected with the upper part and the lower part of the oil tank respectively. A three-dimensional multi-layer type electric oil purification device for deep purification of transformer oil has the advantages of high filtration precision and high dirt holding capacity, so a problem of contradiction of the mechanical filtration precision and dirt holding capacity is solved and defects of selective adsorption of adsorbent, environmental pollution, low processing flow rate of the electrostatic oil purification method, low adsorption rate and poor adsorption effect are avoided; moreover, the invention has good adsorption and purification effect and is lower in cost, and favorable for protection of environment and working staff.

Description

technical field [0001] The invention relates to a method for purifying oil, in particular to a method and device for electrically purifying waste transformer oil, and belongs to the technical field of oil purification. Background technique [0002] The existing treatment methods for waste transformer oil are mainly mechanical filtration and purification methods and regenerative adsorption purification methods. Due to many shortcomings, especially the contradiction between filtration accuracy and pollution-holding capacity and environmental protection problems. In recent years, the application of electrostatic oil purification method has been studied. The electrostatic field is a high-voltage micro-current electric field. The electrostatic oil purification method relies on a strong electrostatic field to induce the impurity particles in the oil to be adsorbed and removed. The electrostatic oil purification method can only remove oil. A small amount of impurity particles in th...

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Problems solved by technology

It has the advantages of high filtration precision and large dirt-holding capacity, and solves the contradiction between filtration precision and dirt-holding capacity of mechanical filtration

At the same time, the electric adsorption purification method is universal in the adsorption of degraded products in oil and external pollution impurities, which solves the selective adsorption of adsorbents, and is also different from the electrostatic oil purification method with small flow rate, low adsorption efficiency and poor effect. Insufficient, it has better adsorption and purification effect and lower cost, it is a new method that can replace other purification methods

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