KR102340858B1 - Plasma water treatmemt apparatus using spray - Google Patents

Abstract

It is an object of the present invention to provide a plasma water treatment apparatus using atomization that performs water treatment with plasma generated by plasma discharge in an atomization region formed of atomized droplets by colliding liquid columns onto which contaminated water (eg, water, liquid contamination source) is sprayed. will do Plasma water treatment apparatus using atomization according to an embodiment of the present invention introduces contaminated water to be treated through an inlet and sprays the contaminated water through at least two injection ports to collide the liquid columns with each other at a collision point of a set liquid column distance to create contaminated water an atomizing nozzle for atomizing into droplets in the air, and a corresponding member spaced apart from the collision point by a discharge gap, wherein the atomizing nozzle and the corresponding member act as different one of a high voltage electrode and a ground electrode, Plasma discharge is caused to droplets of polluted water atomized in the air in the discharge gap.

Description

Plasma water treatment device using atomization {PLASMA WATER TREATMEMT APPARATUS USING SPRAY}

The present invention relates to a plasma water treatment apparatus, and more particularly, to a plasma water treatment apparatus using atomization that treats contaminated water using plasma generated by plasma discharge in an atomization region formed into atomization droplets by colliding liquid columns of contaminated water with each other. is about

As is known, plasma water treatment technology is being developed in order to overcome the limitations of the conventional water treatment technology to treat a large amount of water. However, the conventional plasma water treatment technology still has limitations. Therefore, there is a need to maximize the effect of water treatment by bringing the plasma into contact with water regardless of the type of plasma.

The technology that generates plasma discharge in a liquid is an environmental technology that removes pollutants, and can be used in various fields such as material technology to develop high-value new materials. In order to efficiently generate plasma in water, it is necessary to appropriately control the generation of bubbles and the distribution of fine bubbles.

However, a commonly known technique generates air bubbles in water by additionally injecting gas. A system for additionally supplying gas in order to maximize plasma water treatment efficiency reduces the efficiency of the entire water treatment system and increases the complexity of the water treatment system.

In addition, if the plasma discharge is performed after additional gas is supplied to treat a large flow of water, the instability of the plasma discharge may increase depending on the gas injection method, and the uniformity of the bubbles in the bubble region where water and bubbles are mixed One distribution becomes difficult. Therefore, the plasma water treatment method of additionally supplying gas has a limit in increasing water treatment efficiency.

An object of the present invention is to provide a plasma water treatment apparatus using atomization that efficiently water-treats a large flow of contaminated water with plasma by optimizing the flow of contaminated water (eg, water, liquid pollution source) and plasma discharge.

It is an object of the present invention to provide a plasma water treatment apparatus using atomization that performs water treatment with plasma generated by plasma discharge in an atomization region formed of atomized droplets by colliding liquid columns onto which contaminated water (eg, water, liquid contamination source) is sprayed. will do

Plasma water treatment apparatus using atomization according to an embodiment of the present invention introduces contaminated water to be treated through an inlet and sprays the contaminated water through at least two injection ports to collide the liquid columns with each other at a collision point of a set liquid column distance to create contaminated water an atomizing nozzle for atomizing into droplets in the air, and a corresponding member spaced apart from the collision point by a discharge gap, wherein the atomizing nozzle and the corresponding member act as different one of a high voltage electrode and a ground electrode, Plasma discharge is caused to droplets of polluted water atomized in the air in the discharge gap.

The atomization nozzle may act as a high voltage electrode to which a high voltage is applied, and the corresponding member may act as a ground electrode electrically grounded.

The atomization nozzle includes a body having the inlet for introducing the contaminated water, a first chamber connected to the inlet to store the contaminated water, and a supply passage connected to the first chamber for supplying the contaminated water, and the body; and a cap having the at least two injection ports that are coupled to and set a second chamber connected to the supply passage, and allow the liquid columns formed by spraying the contaminated water in the second chamber to reach the collision point. have.

The at least two injection holes may be arranged at set intervals along the circumferential direction of the cap to collide the liquid columns at the collision point to form atomization in the air with droplets of contaminated water in the discharge gap.

As described above, in an embodiment of the present invention, since liquid columns are formed by spraying contaminated water (water, pollution source) from an atomization nozzle having at least two injection ports, the liquid columns are placed in the air (gas, atmosphere) at the collision point of the liquid column distance to each other. The atomization area is set with the atomized droplets in the discharge gap in the air (gas, air) by collision, and the polluted water is uniformly distributed in the air (gas, air) in the atomization area.

Therefore, in one embodiment, a voltage difference is formed between the atomization nozzle to which a high voltage is applied and a corresponding member electrically grounded to generate plasma discharge in a discharge gap in the air to generate plasma. The generated plasma is formed between the droplets of the atomized polluted water in the atomization region to remove contaminants contained in the atomized droplets to treat the polluted water (water, pollutant source).

In addition, in one embodiment, since atomized droplets of polluted water are uniformly distributed in the air (gas, atmosphere) in the atomization region, plasma discharge is uniformly formed in the discharge gap and the atomization region, and accordingly, by the uniformly generated plasma It is possible to further increase the water treatment efficiency of the polluted water atomized into droplets.

1 is a cross-sectional view of a plasma water treatment apparatus using atomization according to an embodiment of the present invention.
FIG. 2 is a bottom view of the spray nozzle used in FIG. 1 .
3 is a photograph showing a state in which atomization is formed in the air with droplets of contaminated water by colliding a liquid column through the plasma water treatment apparatus using atomization of FIG. 1 .
4 is a photograph showing a state in which plasma is generated between the droplets by plasma discharge in a state in which atomization is formed in the air with droplets of the contaminated water of FIG. 3 .

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

1 is a cross-sectional view of a plasma water treatment apparatus using atomization according to an embodiment of the present invention, and FIG. 2 is a bottom view of the spray nozzle used in FIG. 1 . 1 and 2 , a plasma water treatment apparatus using atomization according to an embodiment includes an atomization nozzle 10 and a corresponding member 20 . One embodiment further increases the contact area between the polluted water and air (eg, gas, air, hereinafter referred to as “air”) in a manner that atomizes polluted water (eg, water, liquid pollutants, hereinafter referred to as “contaminated water”). can be maximized.

Since one embodiment atomizes the polluted water into droplets, the plasma generated by plasma discharge is applied to the droplets in a space in which numerous droplets made of atomization of the polluted water exist, thereby removing contaminants from the droplets. It is configured to be able to treat the flow rate of contaminated water and to improve the water treatment efficiency by maximizing the contact area between the plasma and the contaminated water.

In addition, in one embodiment, pollutants due to the water treatment effect and plasma reaction by the wet scrubber action because the plasma generated by plasma discharge (PL) is injected between the atomized droplets, that is, the polluted water is atomized in the air. It is possible to simultaneously implement the water treatment effect of additionally removing Therefore, it is configured so that the water treatment efficiency can be increased.

The atomization nozzle 10 is configured to inject and spray contaminated water to be treated to atomize it into droplets in the air. That is, the atomization nozzle 10 is provided with an inlet 11 on one side and at least two injection holes 12, 13 and 14 on the other side. For convenience, the atomization nozzle 10 of this embodiment is provided with three injection ports 12 , 13 , 14 .

For example, the atomization nozzle 10 includes a body 15 and a cap 16 . The body 15 is connected to the inlet 11 for introducing the contaminated water, the first chamber 152 for temporarily storing the contaminated water to absorb the supply shock, and the first chamber 152 connected to the inlet 11 . and a supply passage 153 for supplying contaminated water. Due to the provision of the first chamber 152 in the body 15, the supply passage 153 makes it possible to supply a set amount of contaminated water at a set rate.

The cap 16 is coupled to the body 15 to set the second chamber 161 connected to the supply passage 153 , and liquid columns LC formed by spraying contaminated water in the second chamber 161 . It has at least two injection ports 12, 13, 14 to reach this point of impact P and to collide with each other. Due to the provision of the second chamber 161 in the cap 16 , the amount of contaminated water set in the second chamber 161 to the injection ports 12 , 13 , and 14 can be supplied and sprayed at a set speed. . As an example, it may be screwed to the body 15 of the cap 16 , and the second chamber 161 may have a set volume by setting the screw coupling.

At least two injection holes 12 , 13 , 14 are arranged at set intervals along the circumferential direction in the cap 16 , so that the liquid columns LC of the contaminated water collide with each other at one collision point P to cause a discharge gap Make it possible to atomize the polluted water into droplets in the air in (G).

Since the three nozzles 12 , 13 , 14 or a larger number of injection holes (not shown) are arranged and formed in a symmetrical structure with respect to the radial center of the cap 16 and the extending direction of the supply passage 153 , the cap 16 . In the radial center of (16), it is possible to atomize the polluted water into droplets in the air at the impact point P corresponding to the discharge gap G.

FIG. 3 is a photograph showing a state in which atomization is formed in the air with droplets of contaminated water by colliding a liquid column through the plasma water treatment apparatus using atomization of FIG. 1 . 1 to 3 , the contaminated water to be treated flows into the inlet 11 of the atomizing nozzle 10 and sequentially passes through the first chamber 152 , the supply passage 153 , and the second chamber 161 . to form a plurality of liquid columns LC within the liquid column distance L while being sprayed into the injection holes 12 , 13 , and 14 .

Liquid columns (LC) of contaminated water sprayed from each of the injection ports 12, 13, and 14 collide with each other at a collision point P located at a set liquid column distance L, and from the collision point P The polluted water in the air located in the space reaching the counter member 20 is atomized into droplets.

To this end, each of the injection holes 12, 13, 14 is directed toward the collision point P located in front of the central axis of the atomization nozzle 10 so as to collide at the collision point P of the liquid column distance L. It has a slope (θ). As an example, the slope θ may be formed at 30 degrees from the central axis. Accordingly, the liquid columns LC injected from the respective injection holes 12 , 13 and 14 collide at the collision point P to atomize the polluted water into droplets in the air. That is, the atomization nozzle 10 is formed as an impinging jet injector nozzle.

Corresponding member 20 is spaced apart from the collision point (P) by the discharge gap (G). Accordingly, the liquid columns LC of the contaminated water sprayed to the injection holes 12, 13, and 14 have a slope θ and reach the collision point P to atomize the contaminated water into droplets by the impact force that collides with each other. That is, an atomization area SA in which air and droplets maintain a mixed state is formed in the discharge gap G.

4 is a photograph showing a state in which plasma is generated between the droplets by plasma discharge in a state in which atomization is formed in the air with droplets of the contaminated water of FIG. 3 . 1, 3 and 4, the atomization nozzle 10 and the corresponding member 20 act as different one of the high voltage electrode and the ground electrode for plasma discharge (PL), and the discharge gap G ), a plasma discharge (PL) is generated in the atomized droplets of contaminated water and the air in the atomization area (SA) formed within.

In one embodiment, the atomization nozzle 10 acts as a high voltage electrode, and the counter member 20 acts as a ground electrode. Although not shown, the atomization nozzle may act as a ground electrode, and the corresponding member may act as a high voltage electrode.

Therefore, when the liquid column LC of the contaminated water sprayed to the injection holes 12, 13, and 14 reaches the collision point P, a high voltage is maintained, and after the collision at the collision point P, the discharge In the gap G and the atomization area SA, the droplets are atomized in a state to which a high voltage is applied.

In this state, since the corresponding member 20 is electrically grounded, a plasma discharge PL occurs by using air as a discharge gas in the atomization area SA due to the potential difference formed in the discharge gap G, and thereby plasma between the droplets. is generated

Droplets of polluted water uniformly atomized in the air and air cause a uniform plasma discharge PL in the atomization area SA, thereby uniformly generating plasma between the droplets. Therefore, it is possible to more effectively treat the polluted water atomized into droplets in the atomization area SA.

As shown in FIG. 3, the contaminated water passing through the body 15 to which the high voltage is applied is sprayed to the injection holes 12, 13, 14 of the cap 16 to form respective liquid columns PC, After being injected, the liquid columns LC collide with each other at the collision point P, thereby generating atomization into droplets by momentum.

3 shows experimentally injecting the liquid columns LC through the injection holes 12, 13 and 14, and collides the liquid columns LC at the collision positions P to atomize the liquid columns LC into droplets in the air. It demonstrates the experimental verification of what to do.

As shown in FIG. 4 , the liquid columns LC are concentrated at one collision point P and collide with each other, and the droplets of polluted water atomized into the air by the liquid columns LC charged with high voltage are A potential difference for plasma discharge is formed between the collision point P and the grounded counterpart 20 .

Plasma discharge PL occurs between droplets of polluted water atomized in the air with a potential difference in the atomization area SA formed by the discharge gap G. Plasma generated by the plasma discharge PL removes contaminants included in droplets of the contaminated water to treat the contaminated water.

FIG. 4 shows experimentally verifying that plasma is generated by plasma discharge PL in the atomization area SA and that the contaminated water is treated with the plasma experimentally.

Plasma water treatment apparatus using atomization of an embodiment generates plasma discharge by atomizing liquid organic matter in order to produce a carbon catalyst that can replace noble metal catalysts in various fields, that is, when plasma discharge is caused by atomization to purify polluted water In this case, when generating a plasma discharge by atomizing water to produce environmentally friendly hydrogen, when using the plasma-treated water as agricultural water, and when sterilizing with plasma-treated water, it can be effectively used.

Plasma water treatment device using atomization uses the phenomenon of atomizing polluted water into droplets in the air by colliding polluted water with each other in the air. It is possible to further increase the contact area between the droplets.

Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the description of the invention, and the accompanying drawings, and this is also It goes without saying that it falls within the scope of the invention.

10: atomization nozzle 11: inlet
12, 13, 14: nozzle 15: body
16: cap 20: corresponding member
152: first chamber 153: supply passage
161: second chamber G: discharge gap
L: liquid column distance LC: liquid column
P: collision point SA: atomization area
θ: slope

Claims (4)

an atomization nozzle that introduces contaminated water to be treated through an inlet and sprays the contaminated water through at least two injection ports to collide the liquid columns with each other at a collision point of a set liquid column distance, and atomizes the contaminated water into droplets in the air after the collision point; and
Corresponding member spaced apart from the collision point by the discharge gap
includes,
The atomization nozzle and the corresponding member,
Acts as a different one of the high voltage electrode and the ground electrode,
Plasma discharge is generated using the air in the discharge gap as a discharge gas, and the droplets in the discharge gap are treated with the plasma.
Plasma water treatment device using atomization. According to claim 1,
The atomization nozzle acts as a high voltage electrode to which a high voltage is applied,
The corresponding member acts as an electrically grounded ground electrode
Plasma water treatment device using atomization. According to claim 1,
The atomization nozzle is
A body having the inlet for introducing the contaminated water, a first chamber connected to the inlet to store the contaminated water, and a supply passage connected to the first chamber for supplying the contaminated water, and
A cap having the at least two injection ports coupled to the body, setting a second chamber connected to the supply passage, and allowing liquid columns formed by spraying contaminated water in the second chamber to reach the collision point
Plasma water treatment device using atomization comprising a. 4. The method of claim 3,
The at least two nozzles are
It is arranged at set intervals along the circumferential direction in the cap to collide the liquid columns at the collision point to form atomization in the air with droplets of contaminated water in the discharge gap.
Plasma water treatment device using atomization.

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