KR20040094654A - Plasma reactor - Google Patents

Abstract

PURPOSE: A plasma reactor is provided to reduce abrasion of electrodes and lengthen the lifetime of the electrodes by changing shapes of electrodes. CONSTITUTION: A plasma reactor includes a main body, a first electrode, a second electrode, and a pellet-type paraelectric layer. The main body includes an inlet for receiving a medium and an outlet for discharging the medium. The first electrode(3) and the second electrode(7) are installed in the inside of the main body of the plasma reactor. The first and the second electrodes are opposite to each other. The pellet type paraelectric layer is formed on a discharging region between the first and the second electrodes.

Description

Plasma reactor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma generating apparatus, and in particular, generates ozone water, alkaline water, acidic water, and converts or recycles various oils and waste oils into high value products, It has high power consumption and low power consumption for treating dioxins, which are emitted from incinerators in large quantities, and treating non-degradable substances of CFC (chlorofluorocarbon) series, which are global warming materials used as cooling gases in semiconductor processes and coolers, with non-thermal plasma. The present invention relates to a plasma reactor for underwater discharge / oil discharge / gas discharge.

Due to the high growth of the industrial society, the environmental pollution such as air and water has become an urgent problem, and accordingly, regulations and administrative guidance for environmental protection are being implemented in countries around the world. There is an urgent need to prepare countermeasures for eliminating pollutants and reducing sources.

Nevertheless, the use of synthetic detergents is still increasing, and statistics show that domestic synthetic detergent production has surpassed soap production since the late 1980s. In particular, the use of indiscriminate and excessive synthetic detergents has caused a lot of concerns about water pollution, and although the concerns about water pollution in the past have been considerably resolved due to the reduction of environmental load and the improvement of functions, it is still known as the main cause of water pollution. ought.

Therefore, in order to prevent water pollution problems of any kind of surfactants, the discharged sewage must be discharged to natural stream after purification in sewage treatment plant, but due to the indiscriminate use of synthetic detergents in the situation where the sewage treatment rate is still small. The reality is that water pollution such as foaming, eutrophication, and biodegradation in rivers is inevitable.

Therefore, a so-called detergent-free washing method using electrolytic water as a sterile cleaning liquid instead of a synthetic detergent has been proposed, and the detergent-free washing process electrolytically decomposes water containing an electrolyte to remove proteins of alkaline electrolytic water and sterilize acidic electrolyzed water. As used, it is attracting attention as a substitute for conventional medicines and surfactants.

However, when this kind of detergent is applied to washing or dish washing, it should be presupposed to have at least comparable or higher cleaning power than a conventional surfactant, and to determine what physical properties should be used as a control factor. It needs to be constructed in terms of cleaning mechanisms.

In addition, it goes without saying that the wastewater containing the cleaning agent after washing or dishwashing should be excellent in handlingability, that is, wastewater treatment property, which can be drained to the living environment without any special treatment.

The conventional detergent-free cleaning method applies a voltage having various types of frequencies, that is, an alternating current, a direct current, and a pulse to two electrodes, thereby destroying the dielectric strength of the water, thereby causing a current to flow, and decomposing the water with the power consumed. That's the way. In this case, platinum is a main component of the electrode to which the voltage is applied, because platinum (or silver) is suitable for the electrode immersed in water because ozone generated during the electrolysis of water has a strong oxidizing power.

However, since the conventional detergent-free washing is a method of directly applying a current into the water to make the water into ozone water, alkaline water and acidic water, etc., there is a disadvantage in that more energy is consumed in heating the water than ionizing the water. If energy is continuously applied, the electrode wear is severely disadvantageous, and this electrode wear phenomenon becomes more severe due to electric field inequality due to direct water discharge between electrodes in water.

On the other hand, in the conventional oil treatment, an alternating current, a direct current, and a pulse are applied to a planar reactor, and the electrode surface is composed of a spiral electrode of metal, and the discharge is a streamer discharge. This is not a glow discharge (e.g. a discharge inside a fluorescent lamp), but rather a very unsafe discharge just before flashover (breakdown) occurs.

However, such an oil treatment technology can reduce the molecular weight of the oil by a strong streamer, but a lot of carbonation residues are left, and since the electric field-intensive partial discharge occurs in the discharge space, wear of the electrode for discharge is severe.

In addition, since the direct discharge is performed between the electrodes, since the oil is an insulator, a gentle discharge of the streamer is formed without a gentle discharge in the glow state, and thus there is a problem that the breakdown occurs immediately even if the voltage fluctuation is given a little.

The present invention has been made to solve the above problems, an object of the present invention is to provide a plasma reactor for generating ozone water, alkaline water, acidic water with low power consumption.

Another object of the present invention is to provide a plasma reactor capable of converting or recycling various oils and waste oils into high value products.

Another object of the present invention is to treat dioxin, which is emitted in a large amount from volatile organic compounds or incinerators, and to treat non-thermally decomposable substances of CFC series, which are global warming materials used as cooling gases in semiconductor processes and coolers, with non-thermal plasma. A low power consumption type high efficiency plasma reactor is provided.

1 to 4 is a block diagram of a plasma reactor according to a first embodiment of the present invention

5 to 6 are views for explaining the maximum electric field strength according to the plasma reactor according to a second embodiment of the present invention

7A to 7C are diagrams for describing electric field strengths of different sizes of pellets according to a second embodiment of the present invention;

8a to 8c show equipotential lines according to FIGS. 7a to 7c

9A to 9B are views for explaining electric field strength when the pellets according to the present invention are formed into a rhombus shape.

10a to 10b is a view for explaining the electric field strength according to the dielectric constant of the pellet when the shape of the pellet according to the present invention in a rhombus shape

11A to 11D are diagrams for describing a space between electrodes and a space between coin electrodes according to a third embodiment of the present invention.

12A to 12B are diagrams for describing electric field strength when pellets composed of a dielectric and a ferroelectric are formed between two electrodes according to a third embodiment of the present invention.

13A to 13B are views for explaining an optimized shape of an electrode for minimizing electrode wear according to a third embodiment of the present invention.

14a to 14b is a configuration diagram of a plasma reactor according to a fourth embodiment of the present invention

15 to 16 are diagrams for explaining the principle of motion of charged particles in the electromagnetic field according to the fourth embodiment of the present invention.

17 is a configuration diagram of a plasma reactor according to a fifth embodiment of the present invention

18A to 18D are diagrams for comparing and explaining a discharge state when a magnetic field is applied and when no magnetic field is applied according to the fifth embodiment of the present invention.

19 is a block diagram of a plasma reactor according to a sixth embodiment of the present invention

Explanation of symbols for main parts of the drawings

1: dielectric layer 3: first electrode

5: reaction catalyst layer 5a: first reaction catalyst layer

5b: second reaction catalyst layer 5c: third reaction catalyst layer

7: second electrode 9: power line

11: dielectric structure 100: pellet-like dielectric

200: pellet-like ferroelectric 300: magnetic

300a: first magnetic 300b: second magnetic

Plasma reactor according to the present invention for achieving the above object is a plasma reactor for generating a discharge by using a medium of water or oil or gas by applying a voltage to the two electrodes in the reactor, the plate-like phase dielectric layer phase Protrusion-shaped first electrodes formed on the substrate, a plate-shaped second electrode formed to face the first electrodes, and a plate-shaped reaction catalyst layer formed on the second electrode to face the first electrodes. Characterized in that the configuration.

The plasma reactor of the present invention is to prevent the life of the electrode shortened due to the strong streamer discharge locally generated on the surface of the electrode during discharge, and to allow the electric field to be evenly distributed throughout the electrode. It is characterized by minimizing electrode wear caused by electric field stress that may occur at the time.

That is, the plasma reactor of the present invention is characterized by maximizing the discharge efficiency while minimizing the wear of the electrode due to the electric field stress that may occur during discharge by forming a reaction catalyst layer of the dielectric dielectric between the two electrodes.

In addition, by optimizing the size of the dielectric dielectric formed between the two electrodes is characterized in maximizing the discharge efficiency while minimizing the wear of the electrode due to the electric field stress that may occur during discharge.

In addition, by optimizing the shape of the two electrodes is characterized by minimizing the electrode wear caused by the electric field stress that may occur during discharge.

In addition, it is characterized by maximizing the discharge efficiency by applying a magnetic field in a direction perpendicular to the electric field direction.

Hereinafter, the plasma reactor according to the present invention will be described with reference to the accompanying drawings.

First embodiment

FIG. 1A illustrates an internal cross section of the plasma reactor according to the first embodiment of the present invention, and FIG. 1B is a perspective view thereof.

As shown in the drawing, the plasma reactor according to the first embodiment of the present invention faces the first electrodes 3 of the projection shape formed on the dielectric layer 1 and the first electrodes 3 so as to face each other. And a flat plate type discharge catalyst layer 5 and second electrodes 7 formed on the discharge catalyst layer 5.

Here, the discharge catalyst layer 5 includes an insulating material coated with a discharge catalyst function material such as titanium oxide (TiO ₂ ) on the dielectric or ferroelectric or the surface, and the insulating layer of amorphous material and the crystalline phase dielectric layer are sequentially It may be a stacked structure or a single layer structure consisting only of an insulating layer made of an amorphous material or a crystalline phase dielectric layer.

When the discharge catalyst layer 5 is composed of an insulating layer made of an amorphous material, glass, quartz, pyrex, and ZrO ₂ series materials, which are completely insulators of amorphous materials having a dielectric constant of several to several hundreds, are preferable.

The protrusion-shaped first electrodes 3 are disposed at a predetermined interval on the dielectric layer, and a power line 9 for applying a voltage is connected to any one of the electrodes, and the shapes of the first electrodes 3 are connected. The silver may be formed in the shape of a needle, a rod, a sphere, or the like.

In the plasma reactor according to the first embodiment of the present invention, even when the protrusion-shaped first electrodes 3 are formed on the dielectric layer 1 and only one of the first electrodes 3 is supplied with power, The electric field is diffused along the surface of the reaction catalyst layer 5 disposed to face the first electrodes 3 to make the entire discharge region into a plasma discharge region, and the discharge region can be generated from glow discharge to arc discharge. have.

For reference, FIGS. 2A to 2B further enlarge the discharge region by having a predetermined distance from the reaction catalyst layer 5 and the upper surfaces of the first electrodes 3 without being in contact with each other as compared with the first embodiment described above. As the structure, the separation distance is suitably 1 to 2 mm.

Meanwhile, FIGS. 3A to 3B are structures in which dielectric structures 11 or metallic electrodes are additionally formed on the discharge catalyst layer 5 so as to face the first electrodes 3. Herein, the shape of the dielectric structure 11 or the metallic electrode has the same shape as that of the first electrodes 3, and the first electrodes 3 and the dielectric structure 11 or the metallic electrodes are in contact with each other, or As shown in FIGS. 4A to 4B, it is possible to configure the first electrode 3 and the dielectric structure 11 or the metallic electrode to have a predetermined separation distance without being in contact with each other. There is an advantage that can be secured.

Second embodiment

The second embodiment of the present invention is a case where two plate-shaped electrodes are disposed to face each other and a pellet-like dielectric is formed between the two electrodes.

In fact, the pellet-like dielectric formed between the two electrodes is a discharge catalyst layer for maximizing the discharge efficiency between the two electrodes, which is the same as using a ferroelectric even when using a dielectric having tens to hundreds of dielectric constants without using a ferroelectric. Discharge efficiency can be obtained.

That is, as shown in FIG. 5, when the pellet-like dielectric dielectric 100 is formed between two electrodes (not shown), the maximum field strength is 0.116E + 08 (volt / m) as shown in the drawing. The maximum electric field strength when the ferroelectric 200 is formed between the two electrodes is 0.121E + 08 (volt / m), as shown in FIG. 6, and the pellet of the dielectric dielectric 100 It can be seen that even if using the same field strength is almost the same as using the ferroelectric 200, which is expensive and difficult to manufacture into a pellet shape.

In addition, instead of using the ferroelectric 100 without using the ferroelectric 200, by adjusting the size of the pellet composed of the ferroelectric 100, the same electric field strength as using the ferroelectric 200 can be obtained. If this is described in more detail as follows.

7A to 7C are internal cross-sectional views of a plasma reactor in which the size of a pellet composed of a dielectric dielectric formed between two electrodes is increased to 1 mm, 3 mm, and 5 mm.

Here, the pellet was formed of a dielectric constant having a dielectric constant of 100, and the distance between the two electrodes was set to 20 mm, and the equipotential lines for the sizes of the pellets are shown in FIGS. 8A to 8C.

8A to 8C, it can be seen that the dislocation between the adjacent pellets tends to saturate when the size of the pellet is about 5 mm, while the electric field is 0.260E + 07 (volt / m) when the size of the pellet is 1 mm. , 5mm is 0.106E + 08 (volt / m). When the distance between two electrodes is 20mm, the size of the pellet composed of the dielectric material formed between them is around 5mm, that is, the range of 3 ~ 5mm is the most It can be seen that the range of 2 ~ 10mm is suitable and wide.

On the other hand, Figure 9a to 9b is a case where the shape of the dielectric dielectric formed between the two electrodes in the shape of a diamond rather than a pellet shape, in terms of throughput of the medium during discharge, the structure of Figure 9a is preferable, the electric field strength is increased In view of the above, the structure of Fig. 9B is preferable. This is because the larger the area of the rhombic dielectric is, the stronger the electric field becomes.

On the other hand, Figure 10a shows the electric field distribution in the case where the dielectric constant having a dielectric constant of 100 is formed in a rhombus shape, Figure 10b shows the electric field distribution when the ferroelectric having a dielectric constant of 30000 is configured in a rhombus shape.

As can be seen from FIGS. 10A and 10B, when the size of the rhombus is the same and the spacing between the two electrodes is the same, the maximum dielectric constant is 300 times higher than that of the ferroelectric without using a ferroelectric having a dielectric constant of 30000. The electric field is almost 95% (ferroelectric = 0.502E + 07, ordinary dielectric = 0.475E + 07) compared with the case of using a ferroelectric, so without using a ferroelectric that is expensive and difficult to form a rhombus It can be seen that even when the dielectric is used, the electric field strength comparable to that of the ferroelectric can be obtained.

Third embodiment

The third embodiment of the present invention is a case in which the shapes of two electrodes disposed to face each other are configured as protrusions, and as shown in Figs. 11A to 11D, the first and third electrodes 3 and 7 having a protrusion shape are shown. ) Are structures facing each other with a discharge space in between.

Here, in FIG. 11A, when the distance between the two electrodes is 1 mm, FIG. 11B is 2 mm, and FIG. 11C is 3 mm, the maximum electric field strength is 177511 (volt / m) in the same structure as in FIG. 11A, and in the same structure as in FIG. 11B. The maximum electric field strength is 106842 (volt / m), and in the structure shown in FIG. 11C, the maximum electric field strength is 84891.2 (volt / m), and the maximum electric field strength becomes stronger as the discharge space, that is, the distance between the two electrodes, is closer. have.

At this time, when looking at the electric field distribution, it can be seen that the electric field is concentrated at the corners of each electrode. Thus, when the electric field is concentrated at the corners, the electric field interference between neighboring electrodes is increased, so that the interference between the two electrodes is reduced. It is desirable to make the distance between the coin electrodes larger than the spacing.

That is, when comparing FIG. 11B and FIG. 11D, the electric field interference between neighboring coincidence electrodes (dashed line part of FIG. 11B) widens the distance between the neighboring electrodes (FIG. 11D), so that the electric field interference between coincidence electrodes is eliminated. In addition, even when comparing the maximum field strength it can be seen that the increase from 106842 (volt / m) to 124065 (volt / m).

On the other hand, Figure 12a is a case of forming a pellet-like dielectric (100) (100) between the two electrodes, if the presence of water as a medium between the two electrodes to form a dielectric between the two electrodes to the field stress To minimize the wear of the electrode by.

Compared with the structure of FIG. 11A, such a structure can reduce electric field stress to minimize wear of the edge portion of the electrode, and can create more high electric field distribution points within a unit volume by forming a dielectric. Gases such as harmful gases, sewage and oil and liquid treated materials can be treated in large quantities, and the above-mentioned dielectric materials share electric field stress, thereby achieving a stable treatment effect. For reference, FIG. 12B illustrates a case in which a pellet formed of a ferroelectric material (dielectric constant = 3000) is formed between two electrodes as compared with FIG. 12A described above. In this structure, the dielectric material exhibits strong dielectric properties in that the electrode and the ferroelectric meet. Therefore, when used for water discharge, the wear of the electrode is more severe than the structure of Fig. 12A.

On the other hand, Figure 13a to 13b is a view showing the optimum electrode shape for minimizing the wear of the electrode, Figure 13a is the angle between the center point and the end of both arcs is 120 degrees, Figure 13b is 60 degrees The distance between the two electrodes was set to 2 mm.

In such a structure, by forming the opposite surface between the two electrodes in a round shape, it is possible to reduce the concentration of the electric field on the edge of the electrode to minimize the wear of the electrode.

In addition, FIG. 13A shows that the angle formed by the center point and the ends of both arcs is 120 °, and FIG. 13B is 60 °, but more preferably, the center portion of the arc forms an angle of 60 ° to the center point and both sides of the arc. The tip should be designed to form an angle of 120˚.

Fourth embodiment

The fourth embodiment of the present invention is a magnetic configuration on at least one of the back surface of each electrode from the structure of the above embodiments, an example is shown in Figure 14a to 14b. For reference, FIG. 14A illustrates a structure in which the magnetic 300 is provided on the rear surface of the second electrode 7, or the magnetic 300 may also be provided on the rear surface of the dielectric layer 1. At this time, when the magnetic is also provided on the back surface of the dielectric layer 1, in order to generate a magnetic field by the two magnetic in a direction perpendicular to the electric field, the magnetic is arranged so that the polarities of the two magnetic are the same.

In addition, FIG. 14B shows a structure in which magnetics are provided on the rear surfaces of the first electrode 3 and the second electrode 7, respectively, but only on the rear surface of one of the first and second electrodes 3 and 7. In the structure shown in FIG. 14B, the two magnetic plates 300 formed on the rear surfaces of the first electrode 3 and the second electrode 7 may have the same polarity.

Thus, in the fourth embodiment of the present invention, the magnetic 300 is provided on at least one of the rear surfaces of the first electrode 3 and the second electrode 7 using the principle of movement of charged particles in the electromagnetic field. .

In a space where an electric field and a magnetic field coexist together, Magnetic field , Charge mass m, charge amount Ze, speed Then, the motion of the charge is expressed by the following equation.

The above equation is Lorentz's equation. If the charge is in a space where only the electric field exists, the equation is

If there is no electric field and only the magnetic field is constant in time, the equation will be

This means that the charge is simultaneously affected by the force of each electric field and the magnetic field in the space in which the electric or magnetic field exists, but the influence of the energy (energy) is affected separately.

In addition, the motion of the charged particles in the magnetic field is Constant velocity motion parallel to the magnetic field Synthesis of direction vectors for two kinds of kinetic energy in which projection on a plane perpendicular to the plane becomes constant circular motion, and the combination of these two forces causes the charge motion to rotate in the direction of the electric field. do.

here Considering the equilibrium relationship between the Lorentz force and the centrifugal force perpendicular to the , Perpendicular to Ingredients of Size , The radius of circular motion , If the size of B is

remind Is generally referred to as cyclotron frequency or lamore frequency and is determined only by particle type and magnetic field strength. In addition, the radius of the circular motion can be expressed by the following equation.

This is called a turning radius or lamore radius, and the turning direction is as shown in Fig. 15, when the direction of the magnetic field is upward, the electron (-) turns to the left and the positive ion (+) turns to the right.

On the other hand, in the case of a magnetic field, when the external force is not applied to the particle, the center of rotation moves along the line of magnetic force, but when an external force is applied, the center of gravity turns in a direction perpendicular to the line of magnetic force. And external force Has a velocity perpendicular to

On the other hand, when the electrons move in the high-pressure gas and the electrons collide with gas molecules every second in the presence of the electric field and the magnetic field and lose their momentum, the equation of motion of the electrons is expressed as the following equation. The equation is called the Langevin equation.

Where m is the mass of electrons, Is the momentum conversion collision frequency, and Vm = 0 is the momentum equation of the electron in vacuum.

The motion trajectory of the electrons when the magnetic field is applied orthogonally to the electric field in the parallel plate type electrode structure can be represented as shown in FIG.

As shown in FIG. 16, in a low pressure gas When is small, electrons leaving the cathode reach the anode without colliding with the gas molecules. If is large, perform cyclotron movement as in (3).

If cyclotron radius a = 2mE / eB ² , which is smaller than the distance between electrodes, the effect is that the electrons leaving the cathode return to the cathode, which effectively reduces the effect.If the cyclotron motion continues, collision ionization with residual gas molecules Collision ionization appears.

On the other hand, in high-pressure gas, the gas molecules collide with each other before the cyclotron motion is completed. The larger is, the shorter the distance moving in the electric field direction during the average free stroke. Therefore, in terms of the energy that electrons get from the electric field, The application of is equivalent to raising the gas pressure.

Thus, the fourth embodiment of the present invention is applied to the plasma reaction apparatus using the principle of motion of charged particles in the electromagnetic field as described above. According to the fourth embodiment of the present invention, the surface of the dielectric or the discharge tube of the reactor or The discharge stress caused by the entry and exit of the charged particles at the point where the surface of the electrode and the dielectric meet each other can be significantly reduced, thereby extending the life of the electrode.

In addition, since the discharge area in the reactor becomes wider than when only the electric field is provided, it helps the stability of the discharge type in the reactor, thereby reducing the power consumption and improving the discharge efficiency.

Fifth Embodiment

A fifth embodiment of the present invention is a case where a magnetic is provided on the rear surface of at least one of the two electrodes in a structure in which the first electrode and the second electrode are in a flat plate type.

That is, as shown in FIG. 17, the plasma reactor according to the fifth embodiment of the present invention has a flat plate type first electrode 3 and second electrode 7 which are disposed to face each other with a discharge area therebetween. A first reaction catalyst layer 5a and a second reaction catalyst layer 5b formed on two electrode surfaces facing the discharge region, respectively, and formed in a discharge region between the first reaction catalyst layer 5a and the second reaction catalyst layer 5b. A pellet-type third reaction catalyst layer 5c, and a magnetic member 300 formed on at least one surface of the back surface of the first electrode 3 and the second electrode 7, the first embodiment in this embodiment The structure of the first magnetic 300a and the second magnetic 300b is formed on the back surface of the electrode 3 and the second electrode 7, respectively.

The first and second reaction catalyst layers 5a and 5b may be formed by sequentially stacking an insulating layer of an amorphous material and a crystalline dielectric dielectric layer, or at least one of the first and second reaction catalyst layers 5a and 5b may be formed of an insulating layer of an amorphous material or may have crystalline properties. It is possible to be composed entirely, the amorphous insulating layer is a glass, quartz, pyrex, ZrO ₂ is not completely insulator, such as ZrO ₂ , the dielectric material layer is preferably TiO ₂ .

The material of the first electrode 3 and the second electrode 7 is platinum (Pt), a direct current or an alternating current or a direct current pulse voltage of various frequencies is applied, preferably a medium frequency direct current pulse of several hundred MHz or more. .

In such a structure, an electric field is generated between the first electrode 3 and the second electrode 7, and a magnetic field is generated in a direction perpendicular to the electric field. As shown in FIGS. 18A to 18D, only an electric field is applied. When more magnetic fields are applied than in the case, larger discharges can be caused.

For reference, FIG. 18A shows a discharge pattern of a discharge region when no magnetic field is applied in a state where the electric field is 10 kV, and FIG. 18B shows a discharge pattern when a magnetic field is applied under the same electric field. FIG. 18C shows the discharge pattern of the discharge area when the magnetic field is not applied when the electric field is 15 kV, and FIG. 18D shows the discharge pattern when the magnetic field is applied under the same electric field.

In the structure of the fifth embodiment of the present invention, an insulator of amorphous material and a crystalline dielectric material are laminated on the surfaces of the first electrode 3 and the second electrode 7, respectively, or the first electrode 3 and the first electrode. The first and second reaction catalyst layers 5a and 5b formed of an insulator or a dielectric material of an amorphous material are formed on the surface of at least one of the two electrodes 7, and the magnetic field is formed in a direction perpendicular to the electric field. More plasma light is generated in the discharge region, and since the first electrode 3 and the second electrode 7 are not directly in contact with the medium and are covered with an insulating material, wear of the electrode can be minimized.

Sixth embodiment

In the above-described embodiment, both electrodes are flat plate type, or one of the two electrodes is flat plate type, and the other is a plasma reactor having a flat electrode structure having a protrusion shape formed to face the flat plate type electrode. However, the plasma reactor described below is an embodiment that can be applied when two electrodes have a cylindrical structure instead of a flat plate type.

19 is a front view of a plasma reactor according to a sixth embodiment of the present invention, in which a cylindrical first magnetic member 300a and a first electrode 3 formed along an outer circumferential surface of the first magnetic member 300a are formed. And a first reaction catalyst layer 5a formed along the outer circumferential surface of the first electrode 3, the first reaction catalyst layer 5a and the first reaction catalyst layer 5a and a predetermined space (discharge region). The second reaction catalyst layer 5b formed so as to be formed, the second electrode 7 formed along the outer circumferential surface of the second reaction catalyst layer 5b, and the second magnetic 300b formed along the outer circumferential surface of the second electrode 7. And a pelletized third reaction catalyst layer 5c formed in the discharge region between the first reaction catalyst layer 5a and the second reaction catalyst layer 5b.

Here, the magnetic field applied by the first magnetic 300a and the second magnetic 300b may be applied in a direction perpendicular to the electric field direction between the first electrode 3 and the second electrode 7. To this end, the cylindrical first magnetic (300a) and the second magnetic (300b) in the longitudinal direction is composed of half of the N pole, the other half of the S pole, the first magnetic (300a) and the second magnetic 300b is arrange | positioned so that it may have the same pole structure.

19 illustrates a structure in which the first reaction catalyst layer 5a is formed along the outer circumferential surface of the first electrode 3, and the second reaction catalyst layer 5b is formed along the inner circumferential surface of the second electrode 7. It is also possible to have a structure in which only one of the reaction catalyst layer 5a and the second reaction catalyst layer 5b is formed.

The first and second reaction catalyst layers 5a and 5b may have a structure in which an insulating layer made of an amorphous material and a crystalline phase dielectric layer are laminated, or a single layer structure of an amorphous insulating layer or a dielectric layer. In this case, the crystalline phase dielectric layer is preferably TiO ₂ or a dielectric having a resistivity of several orders of magnitude or more, and in the case where only the crystalline phase dielectric is formed immediately without forming an insulating layer of an amorphous material on each electrode, The crystalline phase dielectric may be any material as long as the material is not porous and the surface is easy to discharge so that water does not come into contact with the electrode.

The plasma reactor according to the sixth embodiment of the present invention has a partial electric field strength applied to the medium as compared with the case of discharging only water, oil or gas by forming a pellet-like dielectric on the discharge area. Since it works more than 1000 times more strongly, in the case of underwater discharge, more alkaline water, ozone water and acidic water can be obtained with less power consumption in terms of ionization of water and production per unit time.

In addition, as the first and second reaction catalyst layers 5a and 5b and the third reaction catalyst layer 5c are formed, plasma light is generated in the reaction apparatus, and the generated ultraviolet rays are combined with plasma energy in the medium. It can be used to treat various bacteria such as bacteria and dysentery, and improve the quality of drinking water.

In addition, since the first and second reaction catalyst layers 5a and 5b completely isolate the first electrode 3 and the second electrode 7 from the medium, wear of the electrode can be minimized and can be used semi-permanently.

In addition, when the plasma reactor of the present invention is used as a water discharge plasma reactor for generating wash water, the electrolyzed water passing through the inside of the reactor or through the discharge zone forms a charge separation layer for a short time and is discharged out of the reactor. The electrolytic water is divided into negative charges and positive charges by using a charge plate and a separator in the form of a diaphragm or DC voltage. At this time, the diaphragm position is installed inside the plasma reactor or at the rear end of the washing water discharged from the reactor, and in order to maintain separation of the charged charges separated by the diaphragm, an electrode plate of opposite polarity with the charged charges is disposed at the rear end. Install on.

As such, when the electrolytic water is separated into an acidic electrolytic water and an alkaline electrolytic water by using a charging plate and a diaphragm, washing is more effective.

Here, the material of the diaphragm may be used such as porous ceramics (amorphous glass fibers and crystalline ceramics) or cloth or electrochemically stable porous polymeric fibers (urethane, Teflon, reinforced plastic), and the like. The structure has pores that are sufficiently easy for passage of charged particles.

In addition, sodium bicarbonate (NaHCO3), sodium carbonate (Na2CO3), salt (NaCl), or sodium hydroxide (NaOH) -based complexes, barium hydroxide (Ba (OH) 2) and potassium carbonate to increase the washing efficiency by washing water. Additives, such as (K2CO3), can be used.

Although the preferred embodiments of the present invention have been described above, it is obvious that the present invention can use various changes, modifications, and equivalents, and that the above embodiments can be appropriately modified and applied in the same manner. Accordingly, the above description does not limit the scope of the invention as defined by the following claims.

As described above, the plasma reactor according to the present invention has the following effects.

In a plasma discharge device that generates a discharge by applying a voltage to two electrodes in a plasma reactor using water, oil, or gas as a medium, the shapes of the two electrodes may be configured in an optimal shape to minimize electrode wear. It is useful for prolonging the life of electrodes, cleaning and removing viruses, neutralizing chemical wastes, etc., and dissolving and purifying harmful substances in liquids.In the case of oil treatment, changes in the characteristics of various oils into high value oils, waste oils, lubricants, etc. It is effective for recycling, and it is effective for the treatment of dioxins, volatile organic compounds or hard-degradable CFC compounds used in semiconductor processes and coolers.

Claims (10)

In the plasma reactor that generates a discharge by using a medium of water or oil or gas by applying a voltage to the two electrodes in the reactor, A reactor body having an input / output port of the medium; A first electrode and a second electrode formed to face each other with a discharge region therebetween in the reactor body; And a pelletized dielectric constant layer formed in the discharge region between the first electrode and the second electrode. The plasma reactor according to claim 1, wherein the pellets have a diameter in the range of 2 to 10 mm. The plasma reactor according to claim 1, wherein the first electrode and the second electrode have a flat plate type. The plasma reactor according to claim 1, wherein the first electrode and the second electrode have protrusions arranged at predetermined intervals in a round shape facing each other. 5. The plasma reactor according to claim 4, wherein the first electrode and the second electrode have an angle formed by both ends of the round and a center point extending from the ends. The plasma reactor according to claim 1, wherein a magnetic is further provided on at least one of the rear surfaces of the first electrode and the second electrode. The plasma reactor according to claim 1, further comprising a first reaction catalyst layer and a second reaction catalyst layer respectively on the first and second electrode surfaces in contact with the discharge region. 7. The plasma reactor according to claim 6, wherein the magnetic is arranged to generate a magnetic field in a direction perpendicular to an electric field direction between the first electrode and the second electrode. The plasma reactor according to claim 1, further comprising a diaphragm for separating charged particles for the medium passing through the discharge zone at the discharge zone or the medium output port of the reactor body. 10. The method of claim 9, wherein the material of the diaphragm includes amorphous glass fiber, a porous porous ceramic containing crystalline ceramics, or a cloth, or any one of an electrically and chemically stable urethane, teflon, and reinforced plastic. Plasma reactor characterized in that the porous polymer fibers.