KR101129590B1 - Apparatus for removing included Moisture in waste oil by using Microwave and method therefor - Google Patents

Abstract

The present invention relates to a waste oil purifying apparatus and method for removing water and particulate contaminants contained in waste oil. The present invention provides a method for removing water from waste oil by transferring microwave energy to waste oils having different permittivity present with water in the oil separation chamber. By removing water and contaminants in the waste oil and recycling or preventing the generation of waste oil by purifying the lubricating oil during operation, it is possible to use it for a long time.It prevents the environmental pollution caused by the generation of waste oil and also purifies the waste oil that is discarded. It can be recycled.

Waste Oil, Microwave, Water, Recycling, Contaminants, Electrostatic Separation, Charging

Description

Apparatus for removing included Moisture in waste oil by using Microwave and method therefor}

The present invention is a device for removing water and particulate contaminants, which are contaminants contained in industrial waste oils such as waste lubricating oil and waste hydraulic oil, and a method thereof. The present invention relates to a waste oil purifying apparatus and a method for preventing long-term use and preventing long-term use, preventing environmental pollution due to generation of waste oil, and purifying and recycling waste oil that is disposed of.

In general, lubricating oil and hydraulic oil used in various machine tools, hydraulic machines, automobile engines, general industries, etc., promote the failure and aging of the machine due to the mixing of moisture, the mixing of particulate contaminants, and the like.

Moisture in lubricating oils is a common contaminant in lubricating systems and causes corrosion of the device, reduction of lubricating properties, breakage of the fluid coating, collection of additives, reduction of hydraulic strength, acceleration of lubricating oil, and growth of bacteria. This is a major cause of wear and damage of hydraulic products.

In addition, the particulate contaminants of the lubricating oil serve as an abrasive to promote wear between the lubricating surfaces to accelerate the generation of particulate contaminants, thereby further promoting the wear of the lubricating surfaces.

As a result, an increase in the frictional force of the lubrication portion causes an increase in temperature, thereby degrading the lubricating properties of the lubricating oil, leading to breakage of the oil film, and consequently, rupture of the lubrication portion. In addition, bacteria and bacteria in the lubricating oil deteriorate the lubrication characteristics, and serves to promote corrosion of the storage tank, hydraulic piping and lubricating surface.

In addition, the recycling technology of waste oil is a method of producing recycled fuel by the high temperature pyrolysis method (Patent 10-0371526) and after the natural sedimentation of the waste oil is added to the catalyst and heated to a temperature of 70-80 ℃ to produce a clean fuel Method (Patent 10-0592856). In addition to this method, many methods of treating waste oil with low-grade fuel oil are appropriately applied.

The recycling method of waste oil focuses on the removal of water and particulate contaminants and the removal of bacteria, algae and bacteria from waste oil (www.tedimex.de). This is most often the case.

Removal of water and particulate contaminants is essential to regenerate lubricating oil properties. Bacteria, etc., corrode storage tanks, pipes and lubricating surfaces when water is present in waste oil. Will be Among these removal methods, centrifugal force method is not perfect to remove particulate contaminants and is not particularly helpful for the removal of bacteria.In case of oil filter method, secondary filter is clogged oil filter and waste oil filter in case of high viscosity. Generates.

Among the existing technologies for removing water in the waste oil, the latest technology is applied by applying the same principle as the method of removing water using a low saturated steam pressure by heating / spraying the waste oil in a vacuum chamber, and applying a vacuum. Is generated using compressed air (Patent 10-0751490). These methods must include equipment for heating the waste oil above a certain temperature in order to remove bacteria and the like and require additional equipment for maintaining a vacuum. Therefore, these methods require a lot of energy to heat the waste oil and maintain the vacuum.

The present invention has been proposed to solve the above-mentioned problems, and the lubricant and the moisture are removed by effectively evaporating the water by using the difference in the dielectric constant absorption of the microwave.

The microwave used in the present invention uses a 2.45 GHz frequency that is allowed to be used industrially, but may use a 915 MHz frequency. It is also possible to use frequencies below 333 GHz.

When microwave is irradiated to dielectric, it penetrates inside of dielectric and changes high frequency electric field and magnetic field by frequency to generate rotation or vibration of dipole in molecule of dielectric and heat is generated by internal friction. Occurs. The absorption of microwaves is high for polar dielectrics and low for nonpolar dielectrics. Water, a polar dielectric, absorbs microwaves well and is easy to heat. Oil, a nonpolar dielectric, has a poor absorption of microwaves, which is about 1 / 36th the amount of water at 20 ° C (Industrial Microwave Applications, Mechanics, p. 12). Using this property, when microwave is irradiated to the oil / water separation chamber with waste oil, oil molecules in the waste oil are not heated well, but water molecules can be easily heated and evaporated and removed. In order to increase this effect, the method of spraying the waste oil into the fine particles so that the waste oil falls into the fine particles from the upper part to the lower part of the oil separation chamber so that the microwave is sufficiently irradiated effectively only heats the water molecules contained in the waste oil and evaporates them. The lubricating oil can be prevented from being heated.

In addition, the microwave can remove most of bacteria and bacteria, and when the charged particles are contained in the waste oil, the charged particles can be charged by the microwave. When microwaves are irradiated to the chargeable particles, the charged particles are charged while releasing hot electrons while being discharged or heated. The electrically charged particulate contaminants are provided with a plurality of pairs of pairs of electrodes having opposite polarities, and a high voltage having the opposite polarities of the positive and negative electrodes is applied to the electrodes of the corresponding polarities, respectively. It can be easily removed by means of an electrostatic separator, which is a particulate contaminant collecting device which is attached to a collecting filter on a surface adjacent to electrodes having different polarities.

In order to achieve the object of the present invention, the present invention is a waste oil storage tank in which waste oil is stored, the waste oil is supplied from the waste water tank, and the oil-water separation chamber for removing water contained in the waste oil by microwaves, and the microwaves in the oil-water separation chamber. To control the oil pump and pumping the condenser oil for condensing and storing the micro-feeding device for supplying the waste oil from the oil-water separation chamber, the electrostatic separator for separating and adsorbing the charged particles to remove and adsorb the evaporated water Provide a controller for the

The oil / water separation chamber irradiates microwaves to the waste oil to evaporate the water by using the dielectric constant absorption difference between the lubricating oil and the water, and the water is stored in the condenser and the water storage through the pipe connected to the upper portion of the chamber.

In addition, it is to be sprayed with fine particles on the top to easily and sufficiently absorb the absorption of the microwave.

Here, when the microwave is irradiated in the oil / water separation chamber, bacteria and bacteria contained in the waste oil are removed, and the charged particles are discharged from the pollutants or electrically charged by radiating hot electrons. Waste oil containing charged particles is fed to the electrostatic separator via discharge means.

In addition, the oil / water separation chamber is made of metal such as copper, aluminum, or stainless steel, which reflects microwaves in order to increase efficiency by confining microwaves. Nonconductive materials should be used to ensure good passage and to maintain the charge of the contaminants.

In the present invention, glass, quartz or ceramic is used, but it is also possible to use Teflon, plastic, or the like, which can be used even at a high temperature.

It is also possible to make a separate vessel in the oil-water separation chamber to irradiate microwaves in a state in which waste oil is injected into the vessel.

At this time, all materials, such as waste oil injection device and the discharge means in the container and the container should be made of a non-conductive material, and should be a material that can be used at high temperatures without passing the microwaves. The discharge means must also be manufactured with a lifesaver that is small enough that the microwave does not escape out, and can have a plurality of discharge holes.

The microwave supply has a magnetron that generates microwaves, an isolator that prevents the reflected microwaves from entering the magnetron, a power monitor that displays traveling wave power and reflected wave power, an impedance regulator, and a waveguide.

In addition, the impedance regulator uses a three-point impedance regulator, but EH Tuner can be used.

In addition, the microwave supply device may be a plurality of microwave supply device to the microwave supply phase 90 degrees or at an appropriate angle in order to supply the microwave uniformly to the oil-water separation chamber, it is connected to the oil-water separation chamber The supply window can be a plurality of squares of different shapes.

In addition, the microwave supply device may directly attach the magnetron to the oil / water separation chamber in a singular or plural form or supply the microwave by a waveguide or a coaxial tube.

In addition, the connection portion of the oil separation chamber and the microwave supply device is separated by a quartz plate to prevent the inflow of waste oil or water in the oil separation chamber through the microwave supply device.

 In addition, the electrostatic separator is a waste oil is introduced through the oil-water separation chamber, a high-pressure DC power supply by a plurality of electrodes and a filter that can adsorb the contaminants between each electrode by the electrostatic separation principle to the filter Allow adsorption.

In addition, the contaminant removal filter is placed in parallel with the flow of waste oil to smooth the flow of waste oil, the waste oil passed through the electrostatic separator adds a flow path so that the waste oil flows in the direction opposite to the gravity direction to remove contaminants having a high specific gravity, Contaminants with high specific gravity should be discharged by means of discharge. The supply means for supplying the waste oil to the electrostatic separator and the inside of the electrostatic separator shall be made of non-conductive material.

The condenser and the water storage is configured to convert the water vapor evaporated from the oil separation chamber into water to store and discharge in the water storage tank.

Here, in order to promote the evaporation of the water, a method in which the oil / water separation chamber is vacuumed using a vacuum pump may be used.

According to the present invention, by removing the water and contaminants in the waste oil to recycle or to prevent the generation of waste oil by purifying the lubricating oil during operation, it is possible to use for a long time, to prevent environmental pollution due to the generation of waste oil and also to discard the waste oil It will have the advantage of being able to purify and recycle.

The above-mentioned objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. Hereinafter, with reference to the accompanying Figure 1 will be described in detail a preferred embodiment of the present invention.

The waste oil purification apparatus according to the present invention is configured to irradiate microwaves to waste oils having different dielectric constants with water in the oil-water separation chamber to remove moisture from the waste oils.

In addition, the oil-water separation chamber 20 having a waste oil inlet, a steam outlet, and a water-separated waste oil conveying port for receiving and supplying lubricating oil having a different dielectric constant along with water from the waste oil reservoir 10 to be pumped on a line. It includes a microwave generator 30 provided on one side for supplying energy to the oil-water separation chamber 20.

Here, the oil-water separation chamber 20 includes a particulate injector 21 for ejecting and discharging the waste oil, and a microwave generator 30 for irradiating microwaves to the waste oil.

In addition, the waste oil is connected from the upper side to the lower side by a fine particle injector 21 having a plurality of nozzle portions suspended in the oil / water separation chamber 20 so as to be in line with the waste oil inlet supplied from the waste oil reservoir 10. While the spray dropping may be configured to receive energy from the microwave generator 30, the fine particle injector 21 is disposed in the top, bottom, left and right of the oil-water separation chamber 20, the waste oil is separated into the oil-water separation chamber ( 20) preferably configured to be diffusion sprayed within.

In addition, the waste oil purifying separator includes an electrostatic separator 40 for removing charged contaminants contained in the waste oil delivered from the oil / water separation chamber 20.

In addition, the electrostatic separator 40 may be connected to the water-separated waste oil conveyance port formed in the oil / water separation chamber 20 so as to communicate with each other, and the waste oil may be fed to charge the pollutants to collect and remove the pollutants.

In addition, the electrostatic separator 40 is formed between at least one or more pairs of power / ground electrodes 41 and 42a to which a high-voltage DC power is applied and the power is separated and electrostatically separated from the power / ground electrodes 41 and 42a. At least one adsorption filter 43 for adsorbing the material is included.

In addition, the water evaporated in the oil / water separation chamber 20 is condensed through the condenser 50 through the water outlet, and is in line communication to be stored in the water storage tank 60.

In addition, the microwave supply device 30 includes a magnetron 31 for generating microwaves, an isolator 32 for preventing the reflected microwaves from entering the magnetron 31, and a power for displaying traveling wave power and reflected wave power. A monitor 33, an impedance regulator 34, and a waveguide 35 are included.

In addition, using the above apparatus, a method of removing moisture from the waste oil by irradiating microwaves to the waste oil having a different dielectric constant present with water in the oil / water separation chamber 20 may be employed.

In addition, it is possible to purify and separate the waste oil having a different dielectric constant with water, which is a step in which the waste oil is pumped on a line from the waste oil reservoir 10 to the oil-water separation chamber 20, and the oil-water separation chamber 20. Energy is supplied by the microwave generator 30 to the microwave generator 30, and the waste oil is sprayed down from the top by the particulate injector 21 suspended in the oil / water separation chamber 20. Selectively receiving energy from the 30, supplying the waste oil from which the water is separated to the electrostatic separator 40, and discharging the separated water from the oil / water separation chamber 20 to be discharged to the outside. In addition, a method of purifying and separating waste oil may be employed.

This, waste oil reservoir 10 is stored waste oil; Waste oil is introduced from the waste oil reservoir 10, the oil-water separation chamber 20 as a microwave chamber for evaporating moisture by irradiating microwaves to the waste oil introduced therein, and a microwave supply device for supplying microwaves to the oil-water separation chamber. 30 and an electrostatic separator 40 for receiving waste oil from the oil / water separation chamber 20 to separate charged contaminants by the electrostatic separation principle, and a condenser 50 for condensing water evaporated from the oil / water separation chamber 20. ), A water storage tank 60 for storing and discharging moisture condensed from the condenser, a controller 70 for controlling these devices, and an oil pump 80 for transferring waste oil.

At this time, the waste oil reservoir 10 is a place that is stored before the process of removing water from the oil-water separation chamber 20 and the stored waste oil is supplied to the oil-water separation chamber 20 by the oil pump 80 and Through the oil / water separation chamber 20 and the electrostatic separator 40, the waste oil from which moisture and pollutants are removed is stored again.

Next, in the oil / water separation chamber 20, the waste oil stored in the waste oil reservoir 10 is introduced, and the introduced waste oil is finely injected into the oil-water separation chamber 20 by the fine particle injection device 21. The microwave is irradiated by the microwave supply device 30 to evaporate moisture, and is supplied to the condenser 50. Water is removed from the oil / water separation chamber 20, and the waste oil including charged contaminants is supplied to the electrostatic separator 40.

In addition, the microwave supply device 30 is composed of a macronet 31, an isolator 32, a power monitor 33, an impedance regulator 34, a waveguide 35, a quartz glass plate 36 The microwave is supplied to the separation chamber 20.

In addition, the electrostatic separator 40 receives waste oil including the contaminants charged by removing water from the oil / water separation chamber 20 and electrostatics the contaminants charged by the electrodes 42a and 42b to which the high-pressure DC power supply 41 is applied. It separates and adsorb | sucks by the adsorption filter 43.

Here, the electrodes 42a and 42b of the electrostatic separator 40 are treated to protect the electrodes by coating.

Of course, to prevent the pollutants having a high specific gravity from being discharged by the waste oil discharge means, a flow path that is reversed to the direction of gravity after electrostatic separation is added. Contaminants having a high specific gravity are discharged by the pollutant discharge valve 44.

In addition, the condenser 50 condenses moisture evaporated from the oil / water separation chamber to convert it into moisture and is stored and discharged in the water storage tank 60 by a discharge means.

The controller 70 controls the operation of the oil pump 80 by receiving signals from the waste oil position sensors 71 and 72 in the oil / water separation chamber.

As described above, by spraying the waste oil through the nozzle inside the oil-water separation chamber subjected to the microwave, only the moisture is heated and evaporated using the selective energy absorbing properties of the microwave, and at the same time, energy is applied to the contaminants in which the microwave is charged. The contaminants are charged by discharging or releasing hot electrons, and the microwaves can perform a function of removing bacteria or germs contained in the waste oil in the oil / water separation chamber.

In addition, the water evaporated in the oil / water separation chamber is condensed through the condenser and stored in the water storage tank, and the charged contaminants in the waste oil pass through the electrostatic separator which collects the contaminants by the discharge means, and the charged charge in the waste oil. Material is introduced into the electrostatic separator by the discharge means, and in the electrostatic separator, two kinds of electrodes having opposite polarities are installed, and when the high voltage is applied from the high voltage generator, the waste oil between the two electrodes is positioned. A strong electric field is formed in the space to collect charged particulate contaminants contained in the waste oil by electrostatic force, thereby effectively purifying and separating the waste oil.

The present invention according to the above configuration is effectively removed by evaporating the water by using the difference in the dielectric absorption rate of the microwave and waste oil, and at the same time the microwave is included in the waste oil and the effect of removing bacteria and bacteria in the waste oil When charging the charged particles can be obtained and the charged contaminants can be effectively removed by the electrostatic separator is to be able to recycle the waste oil more effectively than the conventional method using a vacuum.

The present invention can be applied to regenerate the quality of petroleum by applying to the case where the quality is reduced by the inflow of moisture, pollutants, bacteria and bacteria in the storage of petroleum.

Although the present invention has been described in more detail with reference to the examples, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is an overall system configuration for explaining the waste oil purification separation apparatus and a purification method using the same according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: waste oil tank 20: oil-water separation chamber

30: microwave supply part 40: electrostatic separator

50: condenser 60: water storage tank

70: control device 80: oil pump

Claims (6)

A waste oil purifying separator for irradiating microwaves to waste oils having different dielectric constants with water in the oil separation chamber to remove moisture from the waste oils. The oil and water separation chamber, A fine particle injector for jetting and discharging the waste oil; A microwave generator for irradiating microwaves to the waste oil; Waste oil purification separation apparatus comprising a. delete According to claim 1, The waste oil purification separation device, An electrostatic separator for removing charged contaminants contained in the waste oil transferred from the oil / water separation chamber; Waste oil purification separation apparatus comprising a. The method of claim 3, wherein the electrostatic separator, A power supply / ground electrode to which a high voltage DC power supply is applied; An adsorption filter formed between the power supply / ground electrode to adsorb contaminants that are electrostatically separated; Waste oil purification separation apparatus comprising a. The method of claim 1, wherein the microwave generator, Magnetrons that generate microwaves; An isolator that prevents the reflective microwaves from entering the magnetron; A power monitor displaying the traveling wave power and the reflected wave power; Impedance regulator; wave-guide; Waste oil purification separation apparatus comprising a. A waste oil purification separation method comprising removing water from waste oil by using the waste oil purification separation device according to any one of claims 1, 3, 4, and 5.

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