JP6668219B2 - Vortex water flow generator, water plasma generator, decomposition processing apparatus, vehicle equipped with decomposition processing apparatus, and decomposition processing method - Google Patents

Description

The present invention relates to a vortex water flow generator, a water plasma generator, a decomposition processing apparatus, a vehicle equipped with a decomposition processing apparatus, and a decomposition processing method used for injecting water plasma by arc discharge generated between a cathode and an anode.

  As an apparatus for treating waste using water plasma, an apparatus described in Patent Literature 1 is known. In the apparatus of Patent Document 1, water is used as a plasma stabilizing medium, and incineration ash is supplied to a water plasma jet stream generated by arc discharge to dissolve the incineration ash. The water plasma jet stream is jetted from a water plasma burner, and the water plasma burner includes a cathode and an anode for generating an arc discharge, and a chamber arranged at an end of the cathode to form a vortex water flow. .

  The chamber of the water plasma burner has a cylindrical portion into which high-pressure water is introduced in a cylindrical shape, and partition portions formed at both ends and an inner periphery of the cylindrical portion, respectively. Is formed along the inner peripheral surface of the cylindrical portion to form a vortex water flow. In each partition, an opening is formed at the center axis of the cylindrical part, and high-pressure water that has become a vortex flows partially into water plasma, and the rest is discharged to the outside of the cylindrical part through each opening. Is done.

Japanese Patent No. 3408779

  In the water plasma burner, water plasma is ejected by performing arc discharge through the center cavity of the vortex water flow. Therefore, if a cavity is not formed even if high-pressure water is introduced into the chamber, arc discharge does not occur, and water plasma cannot be jetted. In this regard, the inventor of the present invention has conducted intensive studies while repeating trial and error, and has found that in order to stably form the vortex water flow cavity, the shape of the opening in each partition is important. That is, the present inventors have found an opening capable of stably ejecting water plasma rather than forming each opening in the same shape as in Patent Document 1.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a vortex water flow generator, a water plasma generator, a decomposition processing apparatus, a vehicle equipped with a decomposition processing apparatus, and a decomposition processing method capable of stabilizing water plasma injection. The purpose is to provide.

The vortex water flow generator of the present invention is arranged between a cathode and an anode of a water plasma generator for injecting water plasma, and forms a vortex water flow for forming an eddy water flow for passing an arc discharge generated therebetween. a vessel, comprising a tubular portion which is formed along the inner circumference of the vortex water flow, and a plurality of intermediate partition portion protruding from the inner periphery of the cylindrical portion, wherein each of the partition portion, said cylindrical portion Openings are provided at positions including the central axis of the anode , and the opening shape of the opening is larger in the intermediate partition on the anode side than in the intermediate partition on the cathode side. . In this configuration, the one end side is formed on one end side of the tubular portion and faces the cathode, and the other end side partition portion is formed on the other end side of the tubular portion. The partition part and the other end side partition part may each be provided with an opening at a position including the central axis of the cylindrical part, and the opening shape of the opening of each partition part may be formed to have a different size. Good.

According to this configuration, since the opening shapes of the plurality of openings formed side by side at the position including the center axis of the cylindrical portion are formed to have different sizes, the amount of water flowing across the partition portion is adjusted. The degree of freedom can be increased. Thereby, various variations of the opening shape can be adopted so that the cavity can be favorably formed in the vortex water flow, and the water plasma can be stably jetted. In addition, the inside of the cylindrical portion can be partitioned into a plurality of spaces to form a vortex water flow.

In the vortex water flow generator, it is preferable that the openings of the intermediate partition and the other end are formed in an opening shape that gradually becomes larger in accordance with an arrangement order away from the cathode. In this configuration, the opening shape of the opening gradually increases as approaching the water plasma injection side, and a space in the shape of a cone is formed in the cylindrical portion. Thereby, the cavity of the vortex water flow can be formed stably, which is presumed to be because the water easily flows toward the jet side of the water plasma.

  In the vortex water flow generator, the surface on the cathode side of the intermediate partition and the other end side partition is formed by a tapered surface that is separated from the cathode as approaching the central axis, and the tapered surface is formed into a bowl-shaped surface. It is good to curve so that it may be depressed along.

  In the vortex water flow generator, an arc-shaped chamfer may be formed between the tapered surface and an inner peripheral surface of the opening. By thus curving the tapered surface or forming the arc-shaped chamfer, the resistance to the flow of the vortex water flow can be suppressed, and the vortex water flow cavity can be formed better.

  In the vortex water flow generator, a passage through which water passes from the outside to the inside is formed in the tubular portion, and the passage and the tubular portion each have a cylindrical inner peripheral surface, and a tangential position of the tubular portion. Preferably, the inner peripheral surface of the passage overlaps linearly. With this configuration, the water flowing from the passage can smoothly follow the inner peripheral surface of the cylindrical portion of the cylindrical portion, thereby contributing to the stable formation of the vortex water flow.

  In the vortex water flow generator, the passage may be formed between the adjacent partitions. With this configuration, the water flow can be swirled in a narrow space sandwiched by the partitions.

  In the vortex water flow generator, a plurality of the passages may be formed in the circumferential direction of the cylindrical portion at the same position in the extending direction of the central axis. With this configuration, it is possible to stably form the vortex water flow by pouring water from a plurality of locations in the circumferential direction of the tubular portion at the position where the passage is formed.

  In the vortex water flow generator, each of the partition portions may be provided so as to be detachable from the tubular portion. With this configuration, the partition can be easily replaced, and maintenance, adjustment work, and the like can be easily performed.

  The water plasma generator of the present invention includes the vortex water flow generator, a chamber accommodating the vortex water flow generator, an anode and a cathode for generating arc discharge, and the vortex water flow generator includes the cathode and the anode. And an arc discharge generated therebetween forms a vortex water flow.

  The decomposition processing apparatus of the present invention is characterized by comprising the water plasma generator and a supply device for supplying a decomposition target to the water plasma ejected by the water plasma generator.

  A vehicle equipped with a decomposition processing apparatus according to the present invention is characterized in that the decomposition processing apparatus is mounted on a truck bed.

  The decomposition treatment method of the present invention is characterized in that the decomposition target is supplied by supplying the decomposition target to the water plasma injected by the water plasma generator.

  ADVANTAGE OF THE INVENTION According to this invention, since the opening shape of a several opening part is formed in a different magnitude | size, the cavity of a vortex water flow can be formed stably and the injection of water plasma can be stabilized.

1 is a side view of a vehicle equipped with a decomposition processing apparatus according to an embodiment. It is the top view of the vehicle which saw through the inside of the carrier. FIG. 5 is a left side view of the vehicle as seen through the inside of the bed at a center position in the left-right direction. FIG. 5 is a left side view of the vehicle, as seen through the inside of the carrier at a position closer to the left. It is the top view of the vehicle which looked through the inside of the processing chamber at the center position in the up-down direction. FIG. 3 is an explanatory view showing a partial side cross section of the decomposition processing apparatus of the present embodiment. It is a sectional side view of a container. FIG. 8A is a diagram of the container viewed from the rear, and FIG. 8B is a diagram of the container viewed from the front. FIG. 3 is an explanatory diagram of the tip positions of first and second nozzles. FIG. 3 is a cross-sectional view illustrating an internal structure of first and second nozzles. It is a sectional side view of a chamber. It is a plane sectional view of a chamber. It is a longitudinal section of a chamber. FIG. 2 is an exploded vertical sectional view of a part of a chamber and a vortex water flow generator. It is a disassembled longitudinal sectional view of a vortex water flow generator. It is an exploded perspective view of a part of vortex water flow generator. FIG. 12 is a diagram illustrating a vortex water flow in which FIG. 11 is partially enlarged. It is explanatory drawing of the generation state of arc discharge and water plasma.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that each configuration according to the embodiment is not limited to the configuration described below, and can be appropriately changed. In the following drawings, some components may be omitted for convenience of description.

  FIG. 1 is a side view of a vehicle equipped with a decomposition processing apparatus according to the embodiment. In the following description, “left”, “right”, “front”, and “rear” are directions with respect to the vehicle body unless otherwise specified, and the directions indicated by arrows in each drawing are used as a reference. However, the orientation of each configuration in the following embodiments is merely an example, and can be changed to any orientation.

  As shown in FIG. 1, a vehicle (hereinafter, referred to as a “vehicle”) 10 having a disassembly processing device has a basic structure of a truck. A cabin 11 is provided in front of the vehicle, and extends in the front-rear direction behind the cabin 11. A carrier 12 is provided. An engine 13 for driving a front wheel 14 and a rear wheel 15 is provided below the cabin 11. The cargo bed 12 is formed with three sections in the front-rear direction, and includes a power generation area 12A, a plasma processing area 12B, and a work area 12C in order from the front to the rear.

  Subsequently, each configuration of the power generation area 12A will be described. FIG. 2 is a plan view of the vehicle as seen through the inside of the carrier. As shown in FIG. 2, the vehicle 10 includes a DC generator 17 and an AC generator 18 arranged side by side in the power generation area 12A. In the power generation area 12A, the front, rear, left and right directions of the DC generator 17 and the AC generator 18 are surrounded by the peripheral wall 20. In the power generation area 12A, an exhaust portion 21 (see FIG. 3) described later is provided above the DC generator 17 and the AC generator 18, and the power generation area 12A is formed by the exhaust portion 21 and the peripheral wall 20 when the vehicle is running. To form a closed space. The left and right peripheral walls 20 are opened and closed as wing bodies, open the power generation area 12A to the outside, and expose the generators 17 and 18 to the outside. The AC generator 18 is equipped with an engine different from the engine 13 shown in FIG. 1 and generates AC power using the output of the engine.

  FIG. 3 is a left side view of the vehicle in which the inside of the cargo bed is seen through at the center position in the left-right direction. The DC generator 17 uses the output of the engine 13 to generate power. Specifically, as shown in FIG. 3, the propeller shaft 22 is rotated by the driving of the engine 13, and this rotation rotates the input shaft of the DC generator 17 via the gear box 23 to generate DC power. . As described above, by making it possible to generate AC and DC power, it is possible to operate each device such as a water plasma generator described below even in a storage place without power supply equipment.

  Next, each configuration of the plasma processing area 12B will be described. FIG. 4 is a left side view of the vehicle in which the inside of the cargo bed is seen through at a leftward position. As shown in FIGS. 2 and 4, the vehicle 10 includes a processing chamber 25 that is a closed space in the plasma processing area 12B. In addition, the vehicle 10 further includes a water plasma generator 27 and an exhaust gas treatment device 28 arranged in front and rear in the treatment room 25. The water plasma generator 27 is supplied with DC power from the DC generator 17 (not shown in FIG. 4) to generate a DC arc (arc discharge). Due to the generation of the DC arc, water supplied into the water plasma generator 27 is dissociated and ionized, and a jet stream of water plasma which becomes high energy is jetted. The detailed configuration of the water plasma generator 27 will be described later.

  Hazardous waste (decomposition target) is injected into a jet stream of water plasma jetted from the water plasma generator 27 via a supply device described later. The jet stream of water plasma becomes an extremely high temperature and ultra-high-speed fluid, and the harmful substances of the toxic waste introduced into the fluid are instantaneously decomposed and turned into plasma, and then turned into gas.

  The exhaust gas treatment device 28 is provided on the downstream side of the water plasma generation device 27 with respect to the water plasma injection, that is, in front of the water plasma generation device 27. The exhaust treatment device 28 treats molecules gasified by water plasma. The acidified gas is neutralized through strong alkaline water, and the harmless gas is removed from the upper exhaust unit 21 (FIG. 2). (Not shown). The exhaust unit 21 includes a plurality of fans and uses the upper part of the power generation area 12A as an exhaust passage, and discharges gas from the front of the power generation area 12A. The detailed configuration of the exhaust treatment device 28 will be described later.

  FIG. 5 is a plan view of the vehicle in which the inside of the processing chamber is seen through at the center in the vertical direction. As shown in FIG. 2, FIG. 3, and FIG. 5, a supply pump 31 (not shown in FIG. 5) and a vacuum pump 32 (not shown in FIG. It is juxtaposed. The upper supply pump 31 supplies cooling water and plasma water to the water plasma generator 27, and the plasma water is further pumped as high-pressure water by a high-pressure pump 33 (not shown in FIG. 5). The vacuum pump 32 suctions the cooling water and the plasma water from the water plasma generator 27 in order to discharge them. Since the vacuum pump 32 sucks in a state where water and air are mixed, the mixed water and air are sent to the gas-liquid separator 35 and separated. Each of the pumps 31 to 33 and the gas-liquid separator 35 is driven by AC power supplied from the AC generator 18.

  As shown in FIGS. 2 and 4, a surge tank 37 is provided in a pipe (not shown) connecting each of the pumps 31 to 33 and the water plasma generator 27. A change (pulsation) in the water pressure by each of the pumps 31 to 33 is suppressed via the surge tank 37, and the supply and discharge of the cooling water and the plasma water to the water plasma generator 27 can be performed by the stable water pressure.

  The cooling water and the water for plasma of the water plasma generator 27 are stored in the water tank 40 shown in FIGS. 3 and 5, and are circulated and used by the pumps 31 to 33. Note that the same water is used as the cooling water and the plasma water except for the water pressure when the water is supplied to the water plasma generator 27. Water (cooling water and water for plasma) sucked by the vacuum pump 32 and separated by the gas-liquid separator 35 flows into the water tank 40. The water tank 40 has a double-floor structure in a floor portion in a rear half region of the processing chamber 25, and is installed in a space formed by the double floor. A total of eight water tanks 40 are provided, two in the front and the rear, and four in the left and right, and the water flows in a meandering manner in each of the water tanks 40 as shown by arrows in FIG. Each water tank 40 is connected by a pipe or the like. Then, the water flowing through all the water tanks 40 flows into the tank 42 via a radiator 41 disposed below the loading platform 12 and in front of the rear wheel 15. In the flow of the water, the water heated by the water plasma generator 27 is cooled and supplied to the water plasma generator 27 again via the supply pump 31.

  Since the water plasma generator 27 is installed above the water tank 40 as shown in FIG. 4, a soundproof effect is obtained so that the sound emitted from the water plasma generator 27 is attenuated by the water in the water tank 40. Can be

  As shown in FIG. 2, doors 47 are provided on the left and right sides of the rear wall forming the processing chamber 25, and doors 48 for opening and closing these doors 47 are provided. Therefore, an operator can enter and exit the processing chamber 25 and the space on the bed 12 behind the processing chamber 25 through the entrance 47.

  Next, each configuration of the work area 12C will be described. As shown in FIGS. 2 and 4, the vehicle 10 further includes a supply device 50 installed on the bed 12 in a work area 12C that is an open space. The supply device 50 includes a compressor 51, an air tank 52 that stores compressed air from the compressor 51, a powder transport device 53 that transports powdery hazardous waste by the compressed air in the air tank 52, and an air tank 52. And a liquid transport device 54 for transporting liquid hazardous waste by compressed air. The supply device 50 further includes nozzles 110 and 111 (see FIG. 7) to be described later in the processing chamber 25. The nozzles 110 and 111 send out from the powder transfer device 53 and the liquid transfer device 54 via piping (not shown). The harmful waste is injected into the water plasma injected from the water plasma generator 27.

  In the work area 12C, side tilt plates 56 are provided on both left and right sides of the loading platform 12, respectively. The side tilt plate 56 is hinged at the lower end to the carrier 12 and is rotatable between a standing position and a horizontal position. The horizontal tilt plate 56 in the horizontal position is located on the same plane as the loading platform 12, and forms a working space as a floor surface together with the loading platform 12 in the work area 12C. Ladder portions 57 (not shown in FIG. 4) are respectively provided on the inner surfaces of the side tilt plates 56 at the upright position, and the front end of each ladder portion 57 is rotatably connected to the front end of the side tilt plate 56. Have been. Therefore, by turning the side tilt plate 56 to the horizontal position and rotating and touching the rear end of the ladder portion 57 so that the rear end thereof is located forward, the worker can easily move between the loading platform 12 and the ground via the ladder portion 57. You will be able to go up and down.

  Here, as shown in FIG. 6, a decomposition treatment device 60 capable of decomposing harmful waste is configured including the water plasma generator 27, the exhaust treatment device 28, and the supply device 50 described above. Hereinafter, each configuration of the decomposition processing apparatus 60 of the present embodiment will be described. FIG. 6 is an explanatory view showing a partial cross section of the decomposition processing apparatus according to the present embodiment.

  The water plasma generator 27 is supported at a predetermined height position via a stand 70. The water plasma generator 27 includes a cathode 71 extending forward and backward, a chamber 72 into which the front end side of the cathode 71 is inserted, an iron disk-shaped anode 73 provided diagonally below and forward of the chamber 72, and an anode supporting the anode 73. The support section 75 is provided.

  The cathode 71 is formed of a round bar made of carbon, and is displaced in the front-rear direction via a feed screw shaft mechanism 76 so that the amount of insertion into the chamber 72 can be adjusted. The chamber 72 is supported above the anode support 75 via a support plate 78. An extension cylinder 79 extending forward and backward is connected to the rear end of the anode support 75, and a motor 80 is provided at the rear end of the extension cylinder 79. The driving force of the motor 80 is transmitted to the anode 73 through the extension cylinder 79 and the anode support 75, and the anode 73 is provided rotatably.

  Cooling water is supplied to the chamber 72 via the supply pump 31, and plasma water is supplied via the high-pressure pump 33. Part of the plasma water is jetted from the front end side of the chamber 72 as water plasma. The cooling water supplied to the chamber 72 and the plasma water not jetted are sucked through the vacuum pump 32. Also in the anode support part 75, cooling water flowing inside the anode 73 is supplied via the supply pump 31, and cooling water having absorbed heat at the anode 73 is sucked via the vacuum pump 32.

  The exhaust treatment device 28 includes a box-shaped housing 83 and a water tank 84 provided at a lower portion of the housing 83 and opening an upper portion to store highly alkaline water on the loading platform 12. The exhaust treatment device 28 forms a treatment space 85 for treating gasified waste in a housing 83 and above a water tank 84. Further, the exhaust processing device 28 further includes a shower device 87 and a panel body 88 provided in the processing space 85.

  A water inlet 90 is provided in the water tank 84, and highly alkaline water in the water tank 84 is supplied to the shower device 87 from the water inlet 90 by the operation of a pump 91 (not shown) (see FIG. 2). The shower device 87 injects the supplied highly alkaline water in the processing space 85 to neutralize the gasified acid gas. The neutralized molecules are discharged to the outside by the exhaust unit 21. The highly alkaline water in the water tank 84 is also pumped from the water inlet 90 to the supply port 92 above the panel body 88, and the pumped high alkaline water flows down the entire rear surface of the panel body 88 to the water tank 84. By the flow of the highly alkaline water, neutralization with the acidic gas is carried out in the same manner as described above, and the heat generated by the water plasma is absorbed, so that the entire exhaust treatment device 28 is cooled.

  The exhaust treatment device 28 and the water plasma generator 27 are arranged with a wall 93 therebetween. The wall 93 closes the processing space 85 of the exhaust processing device 28 from the rear, and separates the inside of the processing space 85 from the space in which the external water plasma generator 27 is installed, so that the airtightness between them is improved. Will be maintained.

  Here, a cylindrical housing 95 is provided to penetrate the wall body 93, and the housing 95 houses a front end side of the chamber 72, which will be an injection port side described later, and an anode 73. Thereby, the jet stream of the water plasma jetted from the water plasma generator 27 by the 95 by the container is covered. The penetrating portion of the container 95 in the wall 93 is entirely welded, and the container 95 is held by the wall 93 and the airtightness between them is maintained. The container 95 includes a cylindrical main body 96 formed in a cylindrical shape, a rear opening forming portion 97 formed on one end side (the water plasma generator 27 side) of the cylindrical main body 96, and the other end of the cylindrical main body 96. And a front opening forming portion 98 formed on the side (the exhaust processing device 28 side). The axial direction of the cylinder main body 96 is inclined so that the exhaust processing device 28 side is lower than the water plasma generator 27 side.

  FIG. 7 is a side sectional view of the container. As shown in FIG. 7, the cylindrical main body 96, the rear opening forming portion 97, and the front opening forming portion 98 constituting the container 95 have a double structure, and a single structure through which cooling water flows within a thickness thereof. A space 100 is formed. A supply path 102 and a discharge path 103 for cooling water communicate with the space 100. The supply path 102 is provided at the lower front side of the cylinder main body 96, and the discharge path 103 is formed at the upper end side of the rear opening forming section 97. In the container 95, cooling water is supplied from a supply path 102 via a pump (not shown), and is introduced into the space 100. Then, the heat generated by the water plasma is absorbed by the cooling water flowing from the supply path 102 to the discharge path 103 in the space 100, and the cooling effect of the container 95 is obtained.

  FIG. 8A is a diagram of the container viewed from the rear, and FIG. 8B is a diagram of the container viewed from the front. As shown in FIG. 8A, the opening 97a formed in the rear opening forming portion 97 is formed in an opening shape corresponding to the anode 73 and the front end side of the chamber 72 so as to be able to accommodate the anode 73 and the front end side of the chamber 72. As shown in FIG. 8B, the opening 98a formed in the front opening forming portion 98 is formed in the upper half region of the front opening forming portion 98, and has a lower end extending in the horizontal direction. Therefore, as shown in FIG. 6, the storage space 105 is formed in the lower corner portion of the front opening forming portion 98 and the cylinder main body 96 in the housing 95. The storage space 105 stores hazardous waste that has not been decomposed by water plasma, and is discharged through a passage 106 that passes through a lower portion of the front opening forming portion 98.

  Returning to FIG. 7, the first nozzle 110 constituting the supply device 50 (see FIG. 4) is supported by penetrating the container 95. In the present embodiment, the first nozzle 110 is mounted on the upper part of the container 95 and is disposed with the tip facing downward. The first nozzle 110 is connected to the liquid transfer device 54, and liquid hazardous waste is transferred from the liquid transfer device 54 to the first nozzle 110 via a pipe or the like (not shown). Hazardous waste can be input.

  Here, the container 95 can penetrate and support the second nozzle 111. That is, the supply device 50 further includes the second nozzle 111 in addition to the first nozzle 110, and can selectively use the first and second nozzles 110, 111. In the present embodiment, the second nozzle 111 is attached to the lower part of the container 95, and is disposed with its tip facing upward. The second nozzle 111 is connected to the powder conveying device 53, and powdery hazardous waste is conveyed from the powder conveying device 53 to the second nozzle 111 via a pipe or the like (not shown). Hazardous waste can be put in from the front end. In addition, the hazardous waste discharged from the passage 106 via the circulation means (not shown) is again supplied to the first and second nozzles 110 and 111.

  A female screw portion 112 is provided in a portion of the container 95 that penetrates the nozzles 110 and 111, and a male screw portion 113 that can be screwed into the female screw portion 112 is provided on the outer periphery of each of the nozzles 110 and 111. Therefore, by screwing the male screw portion 113 into the female screw portion 112, the respective nozzles 110, 111 are held in the container 95, and the position of each nozzle 110, 111 in the extending direction can be adjusted by changing the screwing amount. Become like

  As shown in FIG. 8A, the first nozzle 110 may be provided at two positions on the left and right above the container 95, and the second nozzle 111 may be provided at two positions on the left and right below the container 95. In this case, the female screw portion 112 is provided at two upper and lower positions of the container 95, and when the male screw portion 113 is screwed into the female screw portion 112, the arrangement is adjusted so that the tip positions of the left and right nozzles 110 and 111 are aligned.

  Next, the positions of the tips of the first and second nozzles 110 and 111 will be described below with reference to FIG. FIG. 9 is an explanatory diagram of the tip positions of the first and second nozzles. Here, as shown in FIG. 9, in the water plasma generator 27, a jet stream J of water plasma is injected from an injection port 145 which is an inner peripheral surface of the cylinder as described later. In the present embodiment, the jet stream J of the water plasma is jetted so as to spread out in a cone shape from the injection port 145 toward the front, and the central axis position C1 is the same as the central axis position C1 of the injection port 145. And extend in the front-back direction.

  When the hazardous waste is charged, the tips of the nozzles 110 and 111 are arranged inside the jet stream J of the water plasma. Here, the jet stream J of the water plasma is an area that emits light by the injection. Preferably, the nozzles 110 and 111 are arranged such that the tips of the nozzles 110 and 111 are located in a space A1 extending the opening of the injection port 145 along the central axis position C1. In FIG. 9, the tips of the nozzles 110 and 111 are separated from the center axis position C1, but may be arranged so as to coincide with or overlap the center axis position C1. Further, the tips of the nozzles 110 and 111 may be arranged in a space A2 in which the cathode 71 extends along the central axis position C1. By setting the tip positions of the nozzles 110 and 111 in this way, harmful waste can be injected into the hotter part of the jet stream J of the water plasma. As a result, the input hazardous waste can be efficiently decomposed into gasified waste and discharged to the processing space 85 (see FIG. 6) of the exhaust processing device 28 through the container 51.

  Next, the internal structure of the first and second nozzles 110 and 111 will be described with reference to FIG. FIG. 10 is a sectional view showing the internal structure of the first and second nozzles. As shown in FIG. 10, the first nozzle 110 includes a cooling structure 120 having a triple pipe structure, and forms a first passage 121, a second passage 122, and a third passage 123 in order from the inside to the outside. ing. The base end (the upper end in FIG. 9) of the first nozzle 110 is a connection portion 110a, and is connected to a pipe (not shown) communicating with the liquid transfer device 54 (see FIG. 6). The connection portion 110a communicates with the first passage 121. Accordingly, the first passage 121 allows the hazardous waste transported from the liquid transport device 54 to pass through and allows the hazardous waste to be injected from the tip of the first nozzle 110.

  The second passage 122 and the third passage 123 communicate with each other on the distal end side of the first nozzle 110 to form a single space through which the cooling water flows. In this space, a supply passage 125 and a discharge passage 126 for the cooling water are formed. Are in communication. On the base end side of the first nozzle 110, the supply passage 125 communicates with the second passage 122, and the discharge passage 126 communicates with the third passage 123. Specifically, in the first nozzle 110, cooling water is supplied from a supply path 125 via a pump (not shown), and is introduced into the second path 122. Then, after the cooling water passes from the base end side of the first nozzle 110 toward the front end side in the second passage 122, it flows so as to be folded at the front end and is introduced into the third passage 123. In the third passage 123, the cooling water passes from the distal end to the proximal end of the first nozzle 110 and is discharged from the discharge passage 126. By the flow of the cooling water, heat generated by the water plasma is absorbed, and a cooling effect is obtained over the entire length of the first nozzle 110 in the length direction.

  Note that the first and second nozzles 110 and 111 have the same structure although their up-and-down directions are substantially opposite, and their connection destinations are different only between the liquid transfer device 54 and the powder transfer device 53. The description of the structure of the second nozzle 111 is omitted.

  Next, the internal structure of the chamber 72 will be described with reference to FIGS. 11 is a side sectional view of the chamber, FIG. 12 is a plan sectional view of the chamber, and FIG. 13 is a longitudinal sectional view of the chamber.

  As shown in FIGS. 11 and 12, a chamber 72 constituting the water plasma generator 27 includes a chamber body 140 forming a cylindrical inner peripheral surface extending in the front-rear direction, and a front wall mounted in front of the chamber body 140. And an inner space 142 for generating a water plasma inside thereof. An opening communicating with the internal space 142 is formed in the front wall portion 141, and an injection port forming plate 144 is attached so as to close this opening from the front. The ejection port forming plate 144 has an ejection port 145 for ejecting water plasma.

  A rib 140a extending in the circumferential direction is formed at a position closer to the front inside the chamber main body 140, and a plasma water supply passage 147 is formed in front of the rib 140a. Further, the front wall portion 141 is formed with a plasma water discharge passage 148 for discharging the plasma water flowing into the opening. High-pressure plasma water is supplied from the high-pressure pump 33 to the plasma water supply path 147, and plasma water is sucked from the plasma water discharge path 148 by the negative pressure of the vacuum pump 32.

  A cooling water supply passage 150 and a cooling water discharge passage 151 (not shown in FIG. 12) are formed behind the rib 140a of the chamber body 140. Cooling water is supplied from the supply pump 31 to the cooling water supply path 150, and cooling water is sucked from the cooling water discharge path 151 by the negative pressure of the vacuum pump 32. The plasma water supply path 147, the cooling water supply path 150, and the cooling water discharge path 151 are formed in a circular hole shape that becomes an inner peripheral surface of the cylinder.

  As shown in FIG. 13, the plasma water supply passage 147 extends in the left-right direction while communicating with a lower portion of the internal space 142 which is circular in a longitudinal sectional view. Specifically, the plasma water supply path 147 extends in a tangential direction below the internal space 142, and more specifically, the lower end of the plasma water supply path 147 is located on a tangent extending from the lower end of the internal space 142. I have. Thereby, the plasma water flowing from the plasma water supply passage 147 flows smoothly along the circumferential direction of the internal space 142.

  The inner diameter d1 of the plasma water supply passage 147 is set to be the same or substantially the same as the width h1 between the inner peripheral surface of the chamber main body 140 forming the internal space 142 and a cylindrical portion 162 described later. The cooling water supply passage 150 has the same shape as the plasma water supply passage 147 when viewed in a longitudinal section, and the cooling water can flow into the internal space 142 in the same manner as the plasma water. Further, the cooling water discharge passage 151 communicates with an upper portion of the internal space 142 in a longitudinal sectional view and extends in the left-right direction.

  The water plasma generator 27 includes a substantially cylindrical vortex water flow generator 160 housed in the chamber 72. The vortex water flow generator 160 is arranged such that the internal space 142 and the center axis position C1 coincide. The center axis position C1 matches the center axis position C1 (see FIG. 9) of the injection port 145 described above. Therefore, the internal space 142 forms a circular space between the inner peripheral surface thereof and the outer peripheral surface of the vortex water flow generator 160 in a longitudinal sectional view, and the plasma water flowing into the internal space 142 as described above is It flows so as to swirl in a circular space.

  FIG. 14 is an exploded longitudinal sectional view of a part of the chamber and the vortex water flow generator. As shown in FIG. 14, the vortex water flow generator 160 includes a cylindrical portion 162 having a cylindrical shape, a first intermediate partition portion 163 formed to protrude from the inner periphery of the cylindrical portion 162, and a second intermediate partition. Part 164, a rear partition part (one end part) 165 formed on one end side (rear end side) of the cylindrical part 162, and a front part formed on the other end side (front end side) of the cylindrical part 162. A partition portion (the other end-side partition portion) 166 is formed. The first intermediate partition 163 is disposed behind the second intermediate partition 164. The rear partition 165 is disposed to face the rear cathode 71 (see FIG. 11). The front end of the vortex water flow generator 160 is fitted into the opening of the front wall 141.

  FIG. 15 is an exploded vertical sectional view of the vortex water flow generator. As shown in FIG. 15, the cylindrical portion 162 has a structure that can be divided into a plurality of parts in the axial direction (front-back direction), and includes a front end portion 170 located on the side of the injection port 145 (front side), and a front end portion 170. Formed by a rear end portion 171 located on the opposite side (rear side), a first intermediate portion 173, a second intermediate portion 174, three water flow forming rings 176, and six spacer rings 177 located therebetween. Is done. Spacer rings 177 are provided on the front and rear sides of the three water flow forming rings 176, respectively, and the inner circumference of the spacer ring 177 projects forward or backward and fits into the inner circumference of the water flow forming ring 176. The first intermediate portion 173 and the second intermediate portion 174 are arranged so as to be sandwiched by the water flow forming rings 176 from both front and rear sides with the spacer ring 177 interposed therebetween. A front end 170 is provided in front of the foremost water flow forming ring 176 with a spacer ring 177 interposed therebetween, and the spacer ring 177 is provided behind the last water flow forming ring 176 among the three water flow forming rings 176 arranged front and rear. A rear end 171 is provided interposed therebetween.

  FIG. 16 is an exploded perspective view of a part of the vortex water flow generator. As shown in FIGS. 15 and 16, the front end 170 is formed in a flange shape on the outer periphery of the front partition 166, and the rear end 171 is formed in a flange shape on the outer periphery of the rear partition 165. Have been. Therefore, the front end 170 and the front partition 166 form a head part 160A that is a component, and the rear end 171 and the rear partition 165 form an end part 160B that is a component. In addition, the first intermediate portion 173 is formed continuously in a flange shape outside the first intermediate partition portion 163, and the second intermediate portion 174 is formed continuously in a flange shape outside the second intermediate partition portion 164. . Accordingly, the first intermediate portion 173 and the first intermediate partition portion 163 form a holed disk portion 160C that is a component, and the second intermediate portion 174 and the second intermediate partition portion 164 have a hole that is a component. A disk part 160D is formed.

  Each of the partition portions 163 to 166 has circular openings 163a to 166a so as to include the center axis position C1 of the cylindrical portion 162. In the present embodiment, the center positions of the openings 163a to 166a coincide with the center axis position C1. The opening shapes of the openings 163a to 166a are formed in different sizes. Specifically, the opening diameter D1 of the opening 165a of the rear partition 165 is the largest, and the opening diameter D2 of the opening 163a of the first intermediate partition 163 is the smallest. Further, assuming that the opening diameter D3 of the opening 164a of the second intermediate partition 164 and the opening diameter D4 of the opening 166a of the front partition 166 are D4> D3> D2. As a result, the opening diameter (opening shape) increases from the opening 163a of the first intermediate partition 163 toward the front (away from the cathode 71 (see FIG. 11)), and a space in the shape of a cone is formed.

  The rear surfaces of the partition portions 163 to 166 are formed by tapered surfaces 163b to 166b that move forward (away from the cathode 71 (see FIG. 11)) as they approach the center positions of the openings 163a to 166a. The tapered surfaces 163b, 164b, and 166b of the first intermediate partition 163, the second intermediate partition 164, and the front partition 166 are curved so as to be concave along the bowl-shaped surface. Specifically, in the cross-sectional view of the tapered surfaces 163b, 164b, and 166b, the area near the openings 163a, 164a, and 166a is located on a plane orthogonal to the center axis position C1, and the inclination becomes more outward from the area. It has a curved surface that becomes steep. The front surface of each of the partitions 163 to 166 is formed so as to be located on a plane orthogonal to the center axis position C1.

  In the first intermediate partition 163, the second intermediate partition 164, and the front partition 166, arc-shaped chamfers 163c, 164c, 166c are provided between the openings 163a, 164a, 166a and the tapered surfaces 163b, 164b, 166b. Is formed. The curvatures of the chamfers 163c, 164c, 166c are set to be larger than the curvatures of the tapered surfaces 163b, 164b, 166b.

  Here, as shown in FIGS. 13 and 15, a plurality of passages 180 are formed in each of the three water flow forming rings 176. In the present embodiment, three passages 180 are formed in one water flow forming ring 176, and two passages 180 are not shown in FIG. By forming the passages 180 in this manner, in the extension direction of the center axis position C1, three passages 180 are formed at three positions where the water flow forming rings 176 are arranged, and three passages 180 are formed before and after the three passages 180. The position in the direction is the same. Further, three passages 180 are formed between the partition portions 163 to 166 adjacent to each other in the front and rear. Each passage 180 is formed in the shape of a round hole that becomes the inner peripheral surface of the cylinder.

  As shown in FIG. 13, the passages 180 are formed at equal angles (every 120 ° in the present embodiment) in the circumferential direction of the water flow forming ring 176. Each passage 180 penetrates so as to communicate inside and outside the water flow forming ring 176 and extends in a direction inclined with respect to the thickness direction. Specifically, each passage 180 extends in the tangential direction of the inner circumference of the water flow forming ring 176 at the communication position, and more specifically, the inner peripheral surface of the passage 180 is located at the tangential position of the inner circumference of the water flow forming ring 176. It is formed so as to overlap linearly. Therefore, there is no raised portion between the innermost edge of the passage 180 and the inner periphery of the water flow forming ring 176. The angle θ between the direction in which the plasma water flows from the outside of the passage 180 to the inside and the direction in which the plasma water turns and flows outside the water flow forming ring 176 is an acute angle.

  Since the passage 180 is formed as described above, the plasma water flowing along the inner peripheral surface of the chamber body 140 outside the cylindrical portion 162 flows through the passage 180 into the cylindrical portion 162. Then, the water for plasma flows smoothly along the inner peripheral surface of the cylindrical portion 162, and a vortex water flow that swirls in a circular shape so as to form a cavity at the center axis position C1 in a longitudinal sectional view is formed.

  The water plasma generator 27 further includes various components in the chamber 72 behind the vortex water flow generator 160. Hereinafter, such a configuration will be described in order from the front configuration to the rear.

  As shown in FIG. 11, a cylindrical stopper 201 is provided in contact with the rear surface of the rib 140a of the chamber main body 140. The rear partition 165 and the rear end 171 of the vortex water flow generator 160 fit into the opening of the stopper 201, and are positioned so that the vortex water flow generator 160 does not move backward.

  A stepped cylindrical case 202 is provided in contact with the rear surface of the stopper 201, and a cylindrical water flow forming cylinder 203 is fitted and provided on the rear surface of the case 202. As shown in FIG. 12, a plurality of passages 203a having the same shape as the passage 180 described above are formed in the water flow forming cylinder 203. The cooling water supplied from the cooling water supply path 150 to the internal space 142 by these passages 203 a flows into the water flow forming cylinder 203, contacts the cathode 71, and cools. The cooled cooling water is discharged from a cooling water discharge passage 151 (not shown in FIG. 12).

  The cooling water supplied from the cooling water supply channel 150 flows into the vortex water flow generator 160 in the front through the stopper 201 and the like, and is also used as plasma water. Also, this does not prevent the plasma water from cooling the cathode 71 through the stopper 201 and the like. In short, the water for plasma and the cooling water mean a use mainly used depending on a difference in a supply position and a supply pressure, and are used in combination with each other.

  A sensor hole 203b is formed on the left side of the water flow forming cylinder 203, and a sensor 204 (not shown in FIG. 11) is provided at a position facing the sensor hole 203b. The sensor 204 is mounted in a sensor mounting hole 140b (not shown in FIG. 11) formed in the chamber main body 140. The sensor 204 detects the presence or absence of the cathode 71 at a position before and after the sensor hole 203b through the sensor hole 203b. When the sensor 204 detects that the cathode 71 is not present, the detection data is output to the control means (not shown) to drive the feed screw shaft mechanism 76 (see FIG. 6) to advance the cathode 71 by a predetermined amount. Thereby, the front end position of the cathode 71 can be maintained within a predetermined range forward from the sensor hole 203b.

  Behind the water flow forming cylinder 203, a stepped cylindrical case 206 having a step formed therein is provided. The front end of the case 206 is fitted to the rear end of the water flow forming cylinder 203. Inside the case 206, a contact body 207 that is in contact with and holds the cathode 71 is provided. Although not shown, the contact body 207 is formed by being divided at every predetermined angle in the circumferential direction, and its inner diameter is variable. A ring-shaped elastic body 208 is provided on the outer circumference of the contact body 207, and the elastic force of the elastic body 208 tightens the cathode 71 via the contact body 207 to maintain the contact state between the cathode 71 and the contact body 207. Dripping.

  A ring-shaped seal holder 209 is in contact with the rear end face of the contact body 207, and a seal 210 is provided inside the seal holder 209. The seal 210 maintains liquid tightness with the cathode 71, and the leakage of the cooling water from the rear of the seal 210 is restricted.

  A ring-shaped connector 211 is in contact with the rear end face of the seal holder 209, and a wiring 213 is connected to the connector 211 via an adapter or the like (not shown). The DC power from the DC generator 17 (see FIG. 2) is supplied to the wiring 213 via a switchboard or the like. The connector 211, the seal holder 209, and the contact body 207 are made of a conductor, and electric conduction between the cathode 71 and the wiring 213 is performed through these. Thereby, DC power for generating arc discharge is supplied to cathode 71.

  A ring-shaped spacer 214 is in contact with the rear end surface of the connector 211, and a set screw 215 through which the cathode 71 passes is in contact with the rear end surface of the spacer 214. On the inner peripheral surface behind the chamber main body 140, a female screw (not shown) that can be screw-coupled to the set screw 215 is formed. Positioning in the front-back direction in the configuration is performed.

  In the chamber 72, the components denoted by reference numerals 221 to 225 are seal members made of O-rings and the like, and maintain liquid tightness at their contact surfaces.

  Next, the vortex water flow in the vortex water flow generator 160 will be described. As shown in FIG. 13, when the high-pressure plasma water is supplied from the plasma water supply passage 147, a cylindrical shape is formed between the inner peripheral surface of the chamber body 140 forming the internal space 142 and the outer peripheral surface of the vortex water flow generator 160. The water for plasma flows so as to swirl in the space formed in. Due to the swirling flow of the plasma water, the plasma water passes through the passage 180 and flows into the cylindrical portion 162. At this time, since the inner peripheral surface of the passage 180 linearly overlaps with the inner peripheral tangent position of the water flow forming ring 176, the plasma water flows smoothly along the inner peripheral surface of the cylindrical portion 162.

  FIG. 17 is a diagram illustrating a vortex water flow in which FIG. 11 is partially enlarged. As shown in FIG. 17, the plasma water flowing from the passage 180 into the inside of the cylindrical portion 162 flows so as to swirl between the partition portions 163 to 165 adjacent in the front-rear direction. Here, the plasma water swirling and flowing is sucked from a plasma water discharge passage 148 formed in the front wall portion 141. Therefore, the plasma water flows forward through the openings 163a, 164a, and 166a, passes through a gap between the front end of the front partition 166, and the injection port forming plate 144, and is discharged from the plasma water discharge passage 148. At this time, a vortex water flow W that swirls to form a cavity H at the center axis position C1 is formed. Here, if the cavity H is not formed in the vortex water flow W, the arc discharge AR (see FIG. 18) does not occur between the anode 73 and the cathode 71, so that the vortex water flow W is formed so as to stably generate the cavity H. Is important.

  The present inventor has performed a number of experiments under various conditions, and as shown in FIGS. 14 and 16, the opening diameters D2 to D4 of the openings 163a, 164a, and 166a are large and small such that D4> D3> D2. When the relationship is established, it has been found that the cavity H of the vortex water flow W is most stably formed. This is because a space in the shape of a cone, in which the opening diameters D2 to D4 increase toward the front, is formed, so that the plasma water is more likely to flow from the rear to the front as it goes downstream (toward the front). Guessed. In addition, even if the magnitude relation is other than the above, the cavity H can be stably formed even if the opening diameters D1 to D4 are formed to have different sizes. At this time, at least one of the openings 163a to 166a may be different in size from the others. With such different sizes, the degree of freedom in adjusting the amount of plasma water flowing through each of the openings 163a, 164a, 166a can be increased. Thereby, various opening diameters can be adopted so that the cavity H is formed favorably in the vortex water flow W, and the water plasma can be stably jetted.

Further, the tapered surfaces 163b, 164b, and 166b are curved so as to be concave along the bowl-shaped surface, and the arc-shaped chamfers 163c, 164c, and 166c are formed. Turbulence is unlikely to occur, which can contribute to the stable formation of the cavity H.
The plasma water also has an effect of cooling the vortex water flow generator 160 and the chamber body 140 by the swirling flow.

  When DC power is supplied to the anode 73 and the cathode 71 in a state in which the vortex water flow W having the cavity H is formed as shown in FIG. 18, an arc discharge AR is generated between them. At this time, an arc discharge AR is generated so as to pass through the cavity H of the vortex water flow W. Due to the occurrence of the arc discharge AR, the jet water J of the water plasma, which is dissociated and ionized to form the high-energy water plasma for forming the vortex water flow W, is jetted from the jet port 145.

  The jet stream J of the water plasma becomes an extremely high-temperature and ultra-high-speed fluid, and as shown in FIG. 9, the hazardous waste introduced from the tips of the nozzles 110 and 111 is decomposed. In the present embodiment, since the tips of the nozzles 110 and 111 are arranged at the positions described above with reference to FIG. 9, decomposition can be performed under favorable conditions in the higher temperature portion of the jet stream J of the water plasma. In addition, the input hazardous waste can be efficiently decomposed into gasified waste. Here, as the hazardous waste, PCB, sulfuric acid pitch, asbestos, chlorofluorocarbon, halon, tires, various kinds of garbage and the like can be exemplified. As shown in FIG. The powdery material is fed from the nozzles 110 and 111 via the powder transfer device 53. Even if such hazardous waste is introduced, it can be decomposed into detoxified waste.

  During the decomposition treatment of the hazardous waste, the container 95 is heated, but it can be cooled and used by passing cooling water through its thickness. Further, even in each of the nozzles 110 and 111, the tip is located in the jet stream J of the water plasma and is heated by receiving a large amount of energy, but the heating is performed by the cooling structure 120 described above with reference to FIG. Can be suppressed.

  The acid gas gasified by the jet stream J of the water plasma is neutralized by the exhaust treatment device 28 described above with reference to FIG. 6, and the gas after the treatment with the water plasma can be changed to a safer exhaust gas. Then, the harmless gas can be discharged from the upper exhaust part 21.

  According to the above embodiment, the above-mentioned treatment of harmful waste can be performed in the vehicle 10, so that the water plasma generator 27 can be transported and operated, and harmful exhaust that is difficult to move is treated in the storage place. can do. As a result, it is possible to reduce the cost of transporting and processing hazardous wastes, and it is also possible to perform a large amount of processing, thereby reducing the processing costs.

  The present invention is not limited to the above embodiment, and can be implemented with various modifications. In the above-described embodiment, the size, shape, direction, and the like illustrated in the accompanying drawings are not limited thereto, and can be appropriately changed without departing from the effects of the present invention. In addition, the present invention can be appropriately modified and implemented without departing from the scope of the object of the present invention.

  For example, in the above-described embodiment, the two intermediate partitions are the first intermediate partition 163 and the second intermediate partition 164. However, as long as the vortex water flow W can be formed as described above, the number of intermediate partitions is three. It may be more than one body or one body.

  Further, as shown in FIG. 15, the vortex water flow generator 160 has a structure that can be divided by a plurality of members. However, the structure is not limited to this, and members adjacent to the front and rear may be integrally formed. For example, the head portion 160A may employ various structures as long as it can be formed, such as changing the shape of the head portion 160A to a structure integrally including the rear spacer ring 177 and the water flow forming ring 176.

  Further, the opening shape of the openings 163a to 166a is not limited to a circle, and may be changed to an elliptical shape or a polygonal shape as long as the vortex water flow W can be formed as described above.

  Further, the position of the passage 180 in the circumferential direction of the water flow forming ring 176 is not particularly limited. In FIG. 15, the positions of the passages 180 are aligned in all the water flow forming rings 176, but the positions of the passages 180 may be changed for each of the water flow forming rings 176.

  Further, the positions and orientations of the nozzles 110 and 111 may be changed as long as the positions are the same as those in the above embodiment.

  The object to be decomposed by the water plasma generator 27 is not limited to the harmful waste described above, and a non-hazardous object may be used as the object of the decomposition process. Furthermore, the water plasma generator 27 is not limited to use in waste treatment, but can be used in any treatment using water plasma such as thermal spraying.

  ADVANTAGE OF THE INVENTION This invention acquires the effect that the jet stream of water plasma can be jetted stably from a water plasma generator.

10 vehicles (vehicles with disassembly processing device)
Reference Signs List 12 loading platform 27 water plasma generator 28 exhaust treatment device 50 supply device 60 decomposition treatment device 71 cathode 72 chamber 73 anode 85 processing space 93 wall body 95 container 100 space 110 first nozzle (nozzle)
111 2nd nozzle (nozzle)
121 first passage 122 second passage 123 third passage 145 injection port 160 vortex water flow generator 162 cylindrical portion 163 first intermediate partition (intermediate partition)
163a Opening 163b Tapered surface 163c Chamfer 164 Second intermediate partition (intermediate partition)
164a Opening 164b Tapered surface 164c Chamfered part 165 Rear partition (one end partition)
165a Opening 165b Tapered surface 166 Front partition (other end partition)
166a Opening 166b Tapered surface 166c Chamfered portion 180 Passage AR Arc discharge C1 Center axis position W Whirlpool water flow

Claims (7)

A vortex water flow generator that is disposed between a cathode and an anode of a water plasma generator that injects water plasma and forms a vortex water flow for passing arc discharge generated therebetween,
A cylindrical portion for forming the vortex water flow along the inner circumference;
Comprising a plurality of intermediate partition portions protruding from the inner periphery of the cylindrical portion,
The intermediate partition has an opening at a position including the central axis of the cylindrical portion, and the opening shape of the opening of the intermediate partition on the anode side is greater than that of the intermediate partition on the cathode side. A vortex water flow generator characterized by being formed large.   One end side partition portion formed on one end side of the tubular portion and facing the cathode, and another end side partition portion formed on the other end side of the tubular portion, the one end side partition portion and the The other end-side partition portion is provided with an opening at a position including the central axis of the cylindrical portion, and the opening shape of the opening of each partition portion is formed in a different size. 2. The vortex water flow generator according to 1. Opening in said partition part and the other end side partition part, the vortex water flow generated according to 請 Motomeko 2 characterized in that it is formed gradually larger opening shape in accordance with the sorted away from the cathode vessel. The vortex water flow generator according to any one of claims 1 to 3, a chamber accommodating the vortex water flow generator, an anode and a cathode for generating arc discharge,
The water plasma generator according to claim 1, wherein the vortex water flow generator is disposed between the cathode and the anode, and forms a vortex water flow through which arc discharge generated therebetween passes.   A decomposition apparatus comprising: the water plasma generator according to claim 4; and a supply device that supplies an object to be decomposed to the water plasma ejected by the water plasma generator.   A vehicle equipped with the decomposition processing apparatus, wherein the decomposition processing apparatus according to claim 5 is mounted on a bed of a truck.   A decomposition treatment method, comprising supplying a decomposition target to the water plasma jetted by the water plasma generator according to claim 4 and decomposing the decomposition target.

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