KR100638109B1 - Apparatus for generating plasma flame - Google Patents

Abstract

A plasma flame generating apparatus is provided to generate plasma flame having a large volume and a high temperature by supplying a hydrocarbon fuel together with a vortex gas. A plasma flame generating apparatus includes a magnetron(10), a power supply unit(20) a circulator(30), a directional engager(40), a stub tuner(50), a wave guide(60), a discharge pipe(70), a gas supply unit(80), an ignition unit(90), and a fuel supply unit(100). The discharge pipe generates electronic waves input through the wave guide and plasma by a vortex gas injected from outside. The gas supply unit supplies the vortex gas to the discharge pipe. The ignition unit supplies initial electrons for generating the electronic waves and the plasma. The fuel supply unit provides an exit for the flame.

Description

Apparatus for generating plasma flame

1 is a block diagram showing the configuration of a flame generating device according to the present invention;

Figure 2 is a front sectional view showing a flame generating device according to a preferred embodiment of the present invention,

3 is a front sectional view showing an arrangement structure when a plurality of nozzles shown in FIG.

4 to 6 is a plan sectional view showing an arrangement structure when a plurality of nozzles shown in FIG.

7 and 8 are a front sectional view showing another installation structure of the nozzle shown in FIG.

9 and 10 are front cross-sectional view showing the structure of a second block provided with an additional gas supply pipe,

11 to 13 is a plan sectional view showing an arrangement structure when the additional gas supply pipe shown in Figure 9 is composed of a plurality,

14 and 15 is a front sectional view showing another installation structure of the additional gas supply pipe shown in FIG.

16 is a sectional front view showing an application state of the flame generating device shown in FIG.

17 is a front sectional view showing a flame generating apparatus according to another embodiment of the present invention;

18 is a photograph of a plasma flame generated in the plasma flame generating device of the present invention.

<Description of the symbols for the main parts of the drawings>

(10): magnetron 20: power supply

30: circulating part 40: directional coupler

50: stub tuner 60: waveguide

70: discharge tube 80: gas supply part

(81): first block 82: injection hole

(90): ignition unit 100: fuel supply unit

101: second block 102: nozzle

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flame generating apparatus. In particular, a plasma flame generating apparatus which provides a high-temperature plasma flame by injecting a liquid or gaseous hydrocarbon-based fuel into a atmospheric electromagnetic wave plasma torch generated by using air and oxygen to completely burn the fuel It is about.

In general, a plasma torch is a device for generating and maintaining a plasma arc column between two electrodes, and examples thereof include a DC arc torch, an inductively coupled plasma torch, and a capacitively coupled high frequency torch. The DC arc torch is a method of applying an electric field directly between two electrodes, which is cumbersome to replace the electrode frequently due to limited electrode life, and requires an expensive current supply device because an arc current of 50 to 10,000 amps must be supplied. In addition, the use of excess power is required. On the other hand, the inductively coupled plasma torch and the capacitively coupled high frequency torch have a problem that the thermal efficiency is very low to 40-50%. As a result, such a conventional plasma torch has a problem that not only the volume of the plasma is small, but also the cost of generating the plasma is very high and many additional facilities are required.

In view of the above problems, the inventor of the present invention has proposed a plasma torch using electromagnetic waves in Korean Patent Publication No. 0394994, and a smoke removal plasma apparatus using microwave plasma in Korean Patent Publication No. 0375423. I've done it. Plasma devices presented in the above two inventions have the advantage of easily and economically producing high-density and high-temperature plasmas, but when the plasma flame leaves the discharge tube, the plasma volume decreases rapidly and causes a rapid temperature drop. There are problems to apply waste gases and waste materials to treatment.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a plasma flame generating device for generating a high-temperature plasma flame by supplying a hydrocarbon fuel in a gas or liquid state to the generated electromagnetic plasma.

Another object of the present invention is to provide a plasma flame generating device capable of miniaturization and improved mobility.

The present invention to achieve the object as described above and to perform the problem for eliminating the conventional defects is a magnetron for oscillating electromagnetic waves;

A power supply unit supplying power to the magnetron;

A circulator for outputting radio waves oscillated by the magnetron and absorbing reflected waves reflected by the magnetron;

A directional coupler that outputs electromagnetic waves transmitted through the circulator and monitors the strengths of incident and reflected waves;

A stub tuner for impedance matching by adjusting the intensity of the incident wave and the reflected wave against the electromagnetic wave input from the directional coupler;

A waveguide to which electromagnetic waves transmitted from the stub tuner are input;

A discharge tube generating plasma by electromagnetic waves input through the waveguide and vortex gas injected from the outside;

A gas supply unit supplying a vortex gas to the discharge tube;

An ignition unit for supplying initial electrons for generating plasma by electromagnetic waves and gases introduced into the discharge tube; And

And a fuel supply unit for supplying a fuel to the plasma formed in the discharge tube and providing a flame outlet through which the generated plasma flame is discharged.

In addition, the present invention comprises a magnetron for generating an electromagnetic wave and a magnetron head for generating and transmitting an electromagnetic wave;

A power supply unit supplying power to the magnetron;

A discharge tube installed in the waveguide to generate plasma by electromagnetic waves input through the waveguide and vortex gas injected from the outside;

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A gas supply unit supplying a vortex gas to the discharge tube;

An ignition unit for supplying initial electrons for generating plasma by electromagnetic waves and gases introduced into the discharge tube; And

And a fuel supply unit for supplying a fuel to the plasma formed in the discharge tube and providing a flame outlet through which the generated plasma flame is discharged.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily flow the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram conceptually showing a configuration of a plasma flame generating device according to a preferred embodiment of the present invention. Referring to FIG. 1, a plasma flame generator according to an exemplary embodiment of the present invention includes a magnetron 10, a power supply unit 20, a circulator 30, a directional coupler 40, and a stub tuner 50. And a waveguide 60, a discharge tube 70, a gas supply unit 80, an ignition unit 90, and a fuel supply unit 100. The magnetron 10 is a magnetron for oscillating electromagnetic waves in the 10 MHz ~ 10 GHz band, and is preferably configured to oscillate 2.45 GHz electromagnetic waves. The power supply unit 20 is composed of a full-wave voltage multiplier and a pulse and direct current (DC) device is configured to supply power to the magnetron 10. The circulator 30 is configured to output the electromagnetic wave oscillated by the magnetron 10 and to dissipate the electromagnetic energy reflected by the impedance mismatch to protect the magnetron 10. The directional coupler 40 outputs the electromagnetic wave transmitted through the circulator 30 and provides a function of monitoring the intensity of the incident wave and the reflected wave. The aforementioned monitoring means the function of measuring the intensity of the incident wave and the reflected wave. The stub tuner 50 is configured such that the electromagnetic field induced by the electromagnetic wave exhibits the strongest phenomenon in the discharge tube 70 by inducing impedance matching with respect to the radio wave input from the directional coupler 40. do. In this case, the stub tuner 50 adjusts the intensity of the reflected wave to be within 1% of the incident wave. When the plasma generation is initialized, the intensity of the reflected wave is less than 10% of the incident wave without the stub tuner 50. The waveguide 60 is configured to transmit an electromagnetic wave input from the stub tuner 50 to the discharge tube 70. The discharge tube 70 is installed at the end of the waveguide 60 is configured to provide a space in which the plasma is generated by the electromagnetic waves input through the waveguide 60. The gas supply unit 80 is configured to supply a vortex gas for stabilization of the generated plasma and to protect the inner wall of the discharge tube 70. The ignition unit 90 is configured to supply initial electrons for generation of plasma. The fuel supply unit 100 is configured to generate a plasma flame having a higher temperature and a larger volume by supplying a hydrocarbon fuel in gaseous or liquid state to the generated plasma.

2 illustrates a connection state of the waveguide 60, the discharge tube 70, the gas supply unit 80, the ignition unit 90, and the fuel supply unit 100. Referring to FIG. 2, the waveguide 60 is a standard rectangular waveguide (width: 86 mm, height: 43 mm), and is formed in a tapered shape whose cross-sectional area decreases from the stub tuner 50 side to the discharge tube 70 side. The energy density of the electromagnetic wave input from the stub tuner 50 increases toward the discharge tube 70.

The discharge tube 70 is installed to vertically penetrate the waveguide 60 between 1/8 (P2) to 1/2 (P1) of the wavelength within the tube from the end 61 of the waveguide 60. Preferably, the discharge tube 70 is installed at a position 1/4 (P) away from the end 61 of the waveguide 60 and is composed of quartz, alumina, or ceramic for easy transmission of electromagnetic waves.

The gas supply unit 80 supplies vortex gas for stabilizing the plasma and protecting the inner surface of the discharge tube 70 from the plasma. The gas supply unit 80 includes a first block 81 and an injection hole 82. The first block 81 is provided with another space S2 which is continuous with the space S1 provided in the discharge tube 70, and the waveguide 60 covers the lower end of the discharge tube 70. It is fixed to). The first block 81 is made of metal, or a coating layer made of metal or metal alloy is provided on the inner surface or the outer surface to block electromagnetic waves. The injection hole 82 is provided such that at least one injection hole 82 has an equiangular interval with respect to the circumferential direction of the first block 81, and is inclined upwardly from the outside of the first block 81 toward the inside. . The vortex gas supplied through the injection port 82 generates a vortex in the discharge tube 70 to stabilize the plasma, prevents damage to the inner surface of the discharge tube 70 by the plasma, and is supplied by the fuel supply unit 100. It acts as an oxidant for the oxidation of the fuel. As the vortex gas, at least one gas selected from air, oxygen, nitrogen, and argon gas is used.

The ignition unit 90 initially supplies electrons for generating plasma into the discharge tube 70, and a pair of tungsten electrodes 91 and 92 are installed in the discharge tube 70, and the first block is provided. The electrodes 91 and 92 are stacked in a dielectric tube 93 so as to prevent arcing between the 81 and the electrode. On the other hand, the ends of the pair of tungsten electrodes 91 and 92 are configured to maintain a discharge interval of 0.1-50 mm.

The fuel supply unit 100 supplies a hydrocarbon fuel to the generated plasma to generate a plasma flame F having a higher temperature and a larger volume. The fuel supply unit 100 includes a second block 101 and a nozzle 102. . The second block 101 is installed on the upper part of the waveguide 60 so as to be positioned at the upper end of the discharge tube 70, and therein another space S3 which is continuous with the space S1 provided in the discharge tube 70. ) Is provided. In addition, an upper end of the second block 101 may provide a flame outlet 103 through which an open plasma flame F is ejected. On the other hand, when the discharge tube 70 and the first and second blocks 81 and 101 are coupled, the spaces S1, S2 and S3 provided in the discharge tube 70 and the first and second blocks 81 and 101 are continuous to form one large one. It forms a space. The second block 101 is made of a metal, or a coating layer made of a metal or a metal alloy is provided on the inner surface or the outer surface to block electromagnetic waves. The nozzle 102 injects hydrocarbon fuel into the space S3 provided in the second block 101, and at least one nozzle 102 has an equiangular interval with respect to the circumferential direction of the second block 101. It is installed to have. As the hydrocarbon fuel injected by the nozzle 102, liquid gasoline, light oil, kerosene, bunker C oil, refined waste oil and gaseous methane, ethane, propane, butane, and the like may be used.

3 to 6 are front cross-sectional views illustrating an arrangement structure of the nozzles 102 when the nozzles 102 are configured in plural numbers. Referring to FIG. 3, two nozzles 102 may be installed to have a height difference with respect to the length direction of the second block 101. As such, the two nozzles 102 having the height difference can generate a large volume and expanded flame by supplying hydrocarbon fuel at different positions. Referring to FIG. 4, two nozzles 102 may be installed symmetrically with respect to the center of the second block 101. Referring to FIG. 5, three nozzles 102 may be installed to have an equiangular interval, that is, a 120 ° interval, with respect to the circumferential direction of the second block 101. Referring to FIG. 6, four nozzles 102 may be installed to have an equiangular interval, that is, a 90 ° interval, with respect to the circumferential direction of the second block 101.

In addition, the nozzle 102 may be installed in a horizontal state as described above, as shown in Figure 7, may be installed inclined downward toward the inner side from the outside of the second block 101, shown in Figure 8 As shown, the two nozzles 102 may be installed to be inclined downward toward the inside of the second block 101 while maintaining the state in which they face each other.

As described above, the fuel supply unit 100 includes at least one nozzle 102, and when the nozzle 102 is provided in plural numbers, the fuel supply unit 100 has a height difference with respect to the longitudinal direction of the second block 101, or The second block 101 may be installed to have an equiangular interval with respect to the circumferential direction of the second block 101, and thus, by injecting the fuel stepwise through the plurality of nozzles 102, the volume and expansion of the plasma flame may be generated. .

9 is a front sectional view of the second block 101 further provided with an additional gas supply pipe 104 for supplying additional gas together with the supply of fuel through the nozzle 102. Referring to FIG. 9, the additional gas supply pipe 104 is installed to include the nozzle 102. More specifically, the additional gas supply pipe 104 may be inserted from an outer surface of the second block 101. It is installed to be exposed to the inner surface, the nozzle 102 is installed inside. The nozzle 102 and the additional gas supply pipe 104 installed in this way are supplied with additional gas and hydrocarbon fuel through different supply lines 105 and 106, respectively. Meanwhile, the additional gas supplied through the additional gas supply pipe 104 additionally supplies oxygen required for the oxidation of the hydrocarbon fuel and mixes the hydrocarbon fuel injected from the nozzle 102 while moving to the center region of the plasma. As such additional gas, air or oxygen may be used.

10 to 13 are cross-sectional views illustrating an arrangement structure of the additional gas supply pipe 104 when the additional gas supply pipe 104 is provided in plural. Referring to FIG. 10, two additional gas supply pipes 104 may be installed to have a height difference with respect to the length direction of the second block 101. Referring to FIG. 11, two additional gas supply pipes 104 may be installed in a symmetrical structure with respect to the center of the second block 101. Referring to FIG. 12, three additional gas supply pipes 104 may be installed at equiangular intervals with respect to the circumferential direction of the second block 101. Referring to FIG. 13, four additional gas supply pipes 104 may be installed at equiangular intervals with respect to the circumferential direction of the second block 101.

In addition, the additional gas supply pipe 104 may be installed in a horizontal state, as shown in Figures 10 to 13, as shown in Figure 14, downward toward the inner side from the outside of the second block 101. 15, the additional gas supply pipes 104 may be inclined downward toward the inside of the second block 101 while keeping the two additional gas supply pipes 104 facing each other.

FIG. 16 shows that the gas supply pipe 107 to be processed is provided at the upper end of the second block 101. Referring to FIG. 16, the gas supply pipe 107 to be processed is installed at a position higher than the nozzle 102 installed in the second block 101, and contaminated air or CFCs, semiconductor cleaning waste gas, volatile organic compounds, and odors. It provides a flow path for allowing the lamp to flow into the generated plasma flame. Accordingly, it is possible to decompose various pollutants using a high temperature plasma flame.

Referring to the operation of the plasma flame generating device configured as described above are as follows.

When power is supplied from the power supply unit 20 to the magnetron 10, the magnetron 10 oscillates electromagnetic waves, and the electromagnetic waves thus oscillated are the circulator 30, the directional coupler 40, the stub tuner 50, and the waveguide. It is transmitted to the discharge tube 70 through 60. On the other hand, the gas supply unit 80 injects the vortex gas supplied from an external source not shown into the inner space of the discharge tube (70).

As described above, when the electromagnetic wave is introduced into the discharge tube 70 and the vortex gas is supplied, a voltage is applied to the electrode of the ignition unit 90 to supply the electrons necessary to generate the plasma to generate the plasma. On the other hand, the supplied vortex gas stabilizes the generated plasma and forms vortices in the discharge tube 70 to protect the inner wall of the discharge tube 70 from a high temperature plasma flame. As a result, the supplied vortex gas provides a function of thermally protecting the discharge tube 70 and stabilizing the plasma. On the other hand, it has an electromagnetic wave energy of 1 kW, an air vortex gas of 20 liters per minute, an inner diameter of 27 mm, and a thickness of 1.5 mm, and the air plasma flame length generated from a discharge tube made of quartz is about 20 cm to 30 cm. When the flow rate of is increased to 80 liters per minute, the length of the air plasma flame is shortened to about 10 cm. Hydrocarbon fuel supplied from the fuel supply unit 100 is injected from the side of the plasma flame and the flame generated by the air and oxygen plasma exits the flame outlet 103 of the second block 101. For example, when a liquid hydrocarbon-based fuel is used, the liquid fuel is vaporized by an air plasma of 5000 to 6000 degrees Celsius at the center temperature of the plasma flame and is burned instantly by the hot plasma gas.

As described above, when the amount of vortex gas is increased, the length of the plasma flame is drastically reduced, and the temperature is also drastically reduced. However, the volume of the plasma flame is increased by the supply of hydrocarbon fuel, and the flame is close to complete combustion because the amount of oxygen for burning the fuel increases at the same time to obtain a high temperature flame.

17 shows a plasma flame generating device according to another embodiment of the present invention. It should be noted that the plasma flame generator according to this embodiment is a miniaturized plasma flame generator due to the simplification of the configuration. Such a flame generating device includes a microwave head 110, a power supply unit, a discharge tube 70, a gas supply unit 80, an ignition unit 90, and a fuel supply unit 100. The power supply unit, the discharge tube 70, the gas supply unit 80, the ignition unit 90, the fuel supply unit 100 is the same configuration and operation as in the above-described embodiment, the detailed description thereof will be omitted, partial Only feature points will be described. In addition, the same reference numerals are used for the same components as the above embodiments.

The microwave head 110 is composed of a magnetron 10 and a waveguide 60 provided with the magnetron 10 to transmit the electromagnetic waves generated from the magnetron 10 to the discharge tube 70.

The gas supply unit 80 is provided with another space S2 continuous to the internal space S1 of the discharge tube 70, the first block 81 provided at the lower end of the discharge tube 70, and the first block. At least one injection hole 82 is formed to connect the inner circumferential surface and the outer circumferential surface of the 81 to provide a space in which the vortex gas is injected into the space provided inside the first block 81.

The fuel supply unit 100 is provided with another space S3 which is continuous in the internal space S1 of the discharge tube 70, is installed at the upper end of the discharge tube 70, and the upper end thereof is opened to eject the plasma flame. The second block 101 is provided to provide a flame outlet 103 and at least one nozzle 102 is installed in the second block 101 to supply fuel to the inside of the second block 101 is installed. It is composed.

On the other hand, when a plurality of nozzles 102 are provided, the plurality of nozzles 102 are equidistant from each other with respect to the circumferential direction of the second block 101, the inner side from the outside of the second block 101 It may be installed to be inclined downward toward the second, the second block 101 may be installed to have a mutual height difference with respect to the height direction.
In addition, the to-be-processed gas supply pipe 107 described with reference to FIG. 16 is installed in the second block 101 so that contaminated air or CFCs, semiconductor cleaning waste gas, volatile organic compounds, odors, etc. may be used using a plasma flame. It can also be processed.

18 is a photograph of a plasma flame generated by using the plasma flame generating device of the present invention, a is taken from the side, b is taken from the front. At this time, kerosene was supplied as a hydrocarbon fuel, 1500cc per hour was supplied, and 60 liters of air per minute were supplied as a vortex gas.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, the present invention can be applied to an incineration facility requiring a high temperature heat source by supplying a hydrocarbon fuel together with supply of vortex gas to the electromagnetic plasma flame generator to generate a plasma flame having a larger volume and a higher temperature. In addition, the use of a heat source from the Dolan is not a possibility of generating toxic pollutants such as dioxins generated during incineration, and it is possible to miniaturize and provide a movable incinerator.

In addition, various kinds of volatile organic compounds contained in the air, dioxins emitted from general incinerators, odors including hydrogen sulfide from plants, and ammonia compounds released from livestock waste can be removed.

In addition, since the pollutant poisonous gas contained in the air can be removed or incinerated, when the polluted medium is sprayed into the air by terrorism, the pollutant can be removed quickly, thereby preventing the threat of the use of NBC weapons.

Claims (20)

A magnetron that oscillates electromagnetic waves; A power supply unit supplying power to the magnetron; A circulator for outputting electromagnetic waves oscillated by the magnetron and absorbing reflected waves reflected by the magnetron; A directional coupler that outputs electromagnetic waves transmitted through the circulator and monitors the strengths of incident and reflected waves; A stub tuner for impedance matching by adjusting the intensity of the incident wave and the reflected wave against the electromagnetic wave input from the directional coupler; A waveguide to which electromagnetic waves transmitted from the stub tuner are input; A discharge tube generating plasma by electromagnetic waves input through the waveguide and vortex gas injected from the outside; A gas supply unit supplying a vortex gas to the discharge tube; An ignition unit for supplying initial electrons for generating plasma by electromagnetic waves and gases introduced into the discharge tube; And And a fuel supply unit for supplying a fuel to the plasma formed in the discharge tube and providing a flame outlet through which the generated plasma flame is discharged. The method of claim 1, And the discharge tube is installed so as to vertically penetrate the waveguide at a position 1/8 to 1/2 of the electromagnetic wave wavelength from the end of the waveguide. The method of claim 1, The gas supply unit may include: a first block provided with another space continuous to an inner space of the discharge tube and installed at a lower end of the discharge tube; And And at least one injection hole formed to connect the inner circumferential surface and the outer circumferential surface of the first block to provide a flow path through which the vortex gas is injected into the space provided inside the first block. The method of claim 3, wherein The first block is made of metal, the plasma flame generator, characterized in that configured to enable shielding of electromagnetic waves. The method of claim 3, wherein The first block is a plasma flame generator, characterized in that the coating layer made of a metal or metal alloy is further provided to enable shielding of electromagnetic waves. The method of claim 3, wherein The injection hole, the plasma flame generating apparatus characterized in that the inclined upward from the outer side of the first block toward the inner side. The method of claim 1, The vortex gas is plasma flame generator, characterized in that consisting of at least one gas selected from air, oxygen, nitrogen, argon gas. The method of claim 1, The fuel supply unit may include: a second block provided with another space that is continuous in the inner space of the discharge tube and installed at an upper end of the discharge tube, the upper end of which is open to provide a flame outlet through which the plasma flame is ejected; And at least one nozzle installed in the second block to supply fuel to the inside of the second block. The method of claim 8, The second block is made of a metal, the plasma flame generator, characterized in that configured to enable shielding of electromagnetic waves. The method of claim 8, The second block, the plasma flame generator, characterized in that the coating layer made of a metal or metal alloy is further provided to enable the shielding of electromagnetic waves. The method of claim 8, The fuel supplied from the nozzle is a plasma flame generator, characterized in that the liquid or gaseous hydrocarbon fuel. The method of claim 8, The nozzle is a plasma flame generating device, characterized in that installed inclined downward toward the inner side from the outside of the second block. The method of claim 8, The nozzle is provided with a plurality, The plurality of nozzles, the plasma flame generator, characterized in that installed so as to have a mutually equidistant interval with respect to the circumferential direction of the second block. The method of claim 8, The nozzle is provided with a plurality, The plurality of nozzles, the plasma flame generating apparatus, characterized in that installed so as to have a mutual height difference with respect to the longitudinal direction of the second block. The method of claim 8, The second block, the plasma flame generating apparatus further comprises at least one additional gas supply pipe for supplying the additional gas into the inner space of the second block. A magnetron head configured to generate and transmit electromagnetic waves, the magnetron oscillating electromagnetic waves and the waveguide; A power supply unit supplying power to the magnetron; A discharge tube installed in the waveguide to generate plasma by electromagnetic waves input through the waveguide and vortex gas injected from the outside; A gas supply unit supplying a vortex gas to the discharge tube; An ignition unit for supplying initial electrons for generating plasma by electromagnetic waves and gases introduced into the discharge tube; And And a fuel supply unit for supplying a fuel to the plasma formed in the discharge tube and providing a flame outlet through which the generated plasma flame is discharged. The method of claim 16, The gas supply unit may include: a first block provided with another space continuous to an inner space of the discharge tube and installed at a lower end of the discharge tube; And And at least one injection hole formed to connect the inner circumferential surface and the outer circumferential surface of the first block to provide a space in which the vortex gas is injected into the space provided inside the first block. The method of claim 17, The fuel supply unit may include: a second block provided with another space that is continuous in the inner space of the discharge tube and installed at an upper end of the discharge tube, the upper end of which is open to provide a flame outlet through which the plasma flame is ejected; And at least one nozzle installed in the second block to supply fuel to the inside of the second block. The method of claim 18, The nozzle is provided with a plurality, The plurality of nozzles, each having an equiangular interval with respect to the circumferential direction of the second block, the plasma flame generator, characterized in that installed inclined downward toward the inner side from the outside of the second block. The method of claim 18, The nozzle is provided with a plurality, The plurality of nozzles, the plasma flame generating apparatus, characterized in that installed so as to have a mutual height difference with respect to the longitudinal direction of the second block.

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