JP7171082B2 - decomposition treatment equipment - Google Patents

Description

The present invention relates to a decomposition treatment apparatus for decomposing an object to be decomposed by injecting water plasma by arc discharge generated between a cathode and an anode.

A device described in Patent Document 1 is known as a device for treating waste using water plasma. 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. In Patent Document 1, a water plasma jet stream is emitted from an injection port of a water plasma burner, and a supply means for supplying incinerated ash from above the water plasma jet stream is provided at a position a predetermined distance away from the injection port. .

Japanese Patent No. 3408779

In the apparatus of Patent Document 1, since the water plasma jet stream is super-high-speed and is injected into an open space, there is a problem that the supplied incineration ash separates from the water plasma jet stream and easily scatters. For this reason, the incineration ash cannot be sufficiently decomposed by the heat of the water plasma jet stream, and the decomposition ability is lowered. Therefore, there is room for improvement in the decomposition ability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a decomposition treatment apparatus capable of improving the efficiency of decomposition treatment using water plasma.

The decomposition treatment apparatus of the present invention comprises a water plasma generator for injecting water plasma by causing an arc discharge to pass through the inside of a vortex water stream, and a feeder for supplying an object to be decomposed to the jet stream of the water plasma. A decomposition treatment apparatus that decomposes the decomposition target with water plasma, wherein the water plasma generator includes a chamber for forming the vortex water flow inside and injecting the water plasma from an injection port; an anode and a cathode for generating an arc discharge passing through the vortex water flow of the anode, the anode being provided at a position near the injection port outside the chamber, and the supply device extending in the injection direction of the water plasma. a main body formed in a cylindrical shape into which the water plasma is introduced; a cooling part for cooling the main body; It is characterized by further comprising a cover member provided outside the chamber away from the chamber and covering the water plasma injected by the water plasma generator .

According to the present invention, when using a water plasma generator in which the anode is provided outside the chamber, it is possible to supply the decomposition target while introducing the water plasma to the inside of the cylindrical main body of the supply device. . Therefore, the object to be decomposed can be decomposed at an extremely high temperature in the enclosed space inside the main body so as not to scatter. As a result, the reliability of decomposition of the decomposition target is increased, and the decomposition can be efficiently performed.

1 is a side view of a decomposition apparatus according to a first embodiment; FIG. It is the side view which carried out the partial cross section view of the container and the supply apparatus. 3A is a rear view of the container and the supply device, and FIG. 3B is a front view of the container. 1 is a schematic perspective view of a feeding device; FIG. FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; FIG. 5 is a cross-sectional view taken along line BB of FIG. 4; Fig. 3 is a side cross-sectional view of the chamber; It is a plane sectional view of a chamber. It is a longitudinal cross-sectional view of the chamber. It is explanatory drawing of the decomposition process of hazardous waste. It is the schematic perspective view which looked at the side cross section of the supply apparatus which concerns on 2nd Embodiment. It is a sectional side view of the supply apparatus which concerns on 2nd Embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, each configuration according to the embodiment is not limited to the configuration shown below, and can be changed as appropriate. Also, in the following diagrams, a part of the configuration may be omitted for convenience of explanation.

[First embodiment]
FIG. 1 is a side view of the decomposition treatment apparatus according to the first embodiment. In the following description, unless otherwise specified, "up", "down", "left", "right", "front", and "back" are based on directions indicated by arrows in each drawing. However, the orientation of each configuration in each of the following embodiments is merely an example, and can be changed to any orientation.

FIG. 1 is an explanatory diagram showing a partial side cross-section of the decomposition treatment apparatus of the first embodiment. As shown in FIG. 1, the decomposition treatment apparatus 10 includes a water plasma generator 11, a cover member 12, and a supply device 13. As shown in FIG.

Water plasma generator 11 is supported at a predetermined height via stand 15 . The water plasma generator 11 includes a cathode 16 extending back and forth, a chamber 17 into which the front end side of the cathode 16 is inserted, an iron disk-shaped anode 18 provided outside the chamber 17 and obliquely downward and forward, and the anode 18 and an anode support portion 19 for supporting the .

The cathode 16 is formed by a round bar made of carbon, and can be displaced in the front-rear direction via a feed screw shaft mechanism 21 to adjust the amount of insertion into the chamber 17 . Chamber 17 is supported above anode support 19 via support plate 22 . A rear end of the anode support portion 19 is connected with an extension cylinder 23 extending in the front-rear direction, and a motor 24 is provided at the rear end of the extension cylinder 23 . The driving force of the motor 24 is transmitted to the anode 18 through the extension cylinder 23 and the anode support portion 19, and the anode 18 is rotatably provided.

Cooling water is supplied to the chamber 17 via a supply pump 26 , and plasma water is supplied via a high-pressure pump 27 . Part of the water for plasma is jetted as water plasma from the front end side of the chamber 17 . The cooling water supplied to the chamber 17 and the plasma water that has not been injected are sucked through the vacuum pump 28 . Also in the anode support portion 19 , the cooling water that flows inside the anode 18 is supplied via the supply pump 26 , and the cooling water that has absorbed heat in the anode 18 is sucked via the vacuum pump 28 . A detailed configuration of the chamber 17 will be described later.

A wall 30 is arranged in front of the water plasma generator 11, and the wall 30 separates a space in which the water plasma generator 11 is installed and a processing space 31 in which an object gasified by the water plasma is processed. maintains airtightness. In the processing space 31, although not shown, for example, highly alkaline water is injected from a shower device to neutralize gasified acid gas. A cylindrical cover member 12 is provided through the wall 30 .

The cover member 12 is arranged in front of the water plasma generator 11 and provided so as to cover the jet stream of water plasma jetted from the water plasma generator 11 . The portion of the wall 30 through which the cover member 12 penetrates is fully welded so that the wall 30 holds the cover member 12 and maintains airtightness therebetween.

The cover member 12 includes a cylinder body portion 33 formed in a cylindrical shape, a rear opening forming portion 34 formed on the rear end side of the cylinder body portion 33 (on the side of the water plasma generator 11 ), and a front end of the cylinder body portion 33 . and a front opening forming portion 35 formed on the side (the side opposite to the water plasma generator 11). The axial direction of the cylinder body portion 33 is inclined so as to become lower as the distance from the water plasma generator 11 increases.

FIG. 2 is a side view showing a partial cross section of the container and the supply device. As shown in FIG. 2, the cylinder main body portion 33, the rear opening forming portion 34, and the front opening forming portion 35, which constitute the cover member 12, have a double structure. A space 36 is formed. A supply passage 38 and a discharge passage 39 for cooling water communicate with the space 36 . The supply path 38 is provided on the front lower end side of the cylinder body portion 33 , and the discharge path 39 is formed on the upper end side of the rear opening forming portion 34 . In the cover member 12 , cooling water is supplied from the supply passage 38 via a pump (not shown) and introduced into the space 36 . The cooling water flowing from the supply path 38 to the discharge path 39 in the space 36 absorbs the heat generated by the water plasma, and the cooling effect of the cover member 12 is obtained.

3A is a rear view of the container and the supply device, and FIG. 3B is a front view of the container. As shown in FIG. 3A, the opening 34a formed in the rear opening forming portion 34 is formed in an opening shape corresponding to the shape of the supply device 13 so that a part of the supply device 13 can be accommodated. As shown in FIG. 3B, the opening 35a formed in the front opening forming portion 35 is formed in the upper half region of the front opening forming portion 35, and the lower end thereof extends along the horizontal direction. Therefore, as shown in FIG. 1, a storage space 41 is formed at the lower corner portion between the front opening forming portion 35 and the cylinder body portion 33 in the cover member 12 . Hazardous waste that has not been decomposed by the water plasma is stored in this storage space 41 and is discharged through a passage 42 passing through the lower portion of the front opening forming portion 35 .

FIG. 4 is a schematic perspective view of the feeding device. The supply device 13 includes a main body portion 45 formed in a cylindrical shape extending in the front-rear direction, and a main body portion 45 connected to the main body portion 45 to store granular, powdery, or liquid hazardous waste (object to be decomposed) inside the main body portion 45 . and a material supply path 46 for supplying. The supply device 13 also includes a cooling unit 47 that cools the main body 45 and part of the material supply path 46 .

5 is a cross-sectional view taken along the line AA of FIG. 4. FIG. As shown in FIG. 5, the body portion 45 is formed in a double tubular shape including an inner tubular portion 50 forming an inner peripheral surface and an outer tubular portion 51 forming an outer peripheral surface. Both front and rear ends of the inner tubular portion 50 are formed by tapered surfaces 50a that approach the center axis of the main body portion 45 from the front and rear ends toward the center. The tapered surface 50 a is formed in a curved shape that swells toward the central axis of the body portion 45 .

6 is a cross-sectional view taken along the line BB of FIG. 4. FIG. As shown in FIG. 6, the material supply path 46 is formed in a cylindrical shape extending in the vertical direction, and the upper end penetrates the outer cylindrical portion 51 of the main body portion 45 and communicates with the inner cylindrical portion 50 while being open. is doing. An upper end portion of the material supply path 46 is opened so as to be elongated in the front-rear direction in an elliptical or elliptical shape (see FIG. 5). The communicating portion between the upper end portion of the material supply passage 46 and the inner cylindrical portion 50 is completely welded to maintain airtightness and liquidtightness therebetween.

The lower end of the material supply path 46 is connected to a delivery device 53 (see FIG. 2) via a pipe or the like (not shown). is sent to Hazardous waste sent to the material supply path 46 is supplied from the upper end of the material supply path 46 into the main body 45 . Hazardous waste discharged from the passage 42 (see FIG. 2) of the cover member 12 is also re-introduced into the material supply passage 46 via circulation means (not shown).

Returning to FIG. 4 , the cooling unit 47 includes a connecting pipe 55 through which the upper end side of the material supply path 46 penetrates, a supply pipe 56 communicating with the connecting pipe 55 and extending in the left-right direction, and an outer cylindrical portion 51 of the body portion 45. and a discharge pipe 57 communicating with the front side.

The discharge pipe 57 is provided in a shape in which one pipe member is bent at two positions in a substantially right angle direction. In other words, the discharge pipe 57 has a transverse portion 57a extending in the left-right direction with one end (left end) connected to the main body portion 45, and a receding portion 57b extending rearward from the other end (right end) of the transverse portion 57a. and a hanging portion 57c extending downward from the rear end portion of the retracted portion 57b. One end portion (left end portion) of the transverse portion 57 a communicates with the upper portion of the front outer peripheral portion of the outer cylindrical portion 51 of the main body portion 45 while being open. A communicating portion between one end portion of the transverse portion 57a and the outer cylinder portion 51 is fully welded to maintain liquid-tightness therebetween.

As shown in FIG. 6, the connection pipe 55 is provided so as to cover the upper portion of the material supply path 46 with a gap between it and the outer peripheral side thereof. The space between the connection pipe 55 and the material supply path 46 communicates with the space between the inner cylindrical portion 50 and the outer cylindrical portion 51 in the main body portion 45, and these spaces are used for cooling. A space 59 is provided. Therefore, the cooling portion 47 includes the cooling space 59 and the inner tubular portion 50 and the outer tubular portion 51 that form the cooling space 59 . The cooling space 59 is formed in a region extending over the body portion 45 and a connection portion of the material supply path 46 with the body portion 45 , that is, an upper region of the material supply path 46 .

The communicating portion between the upper end portion of the connecting pipe 55 and the outer cylindrical portion 51 is fully welded to maintain liquid tightness therebetween. Further, the lower end of the connection pipe 55 is connected to the outer peripheral surface of the material supply path 46 by welding or the like so as to maintain a closed property.

One end (right end) of the supply pipe 56 communicates with the lower end side outer peripheral portion of the connection pipe 55 while being open. A communicating portion between one end of the supply pipe 56 and the connecting pipe 55 is fully welded to maintain liquid-tightness therebetween.

In the cooling portion 47 , cooling water is supplied from the supply pipe 56 via a pump (not shown) and introduced into the cooling space 59 . Then, cooling water flows from the supply pipe 56 to the discharge pipe 57 through the cooling space 59 . Due to the flow of the cooling water, the heat generated by the water plasma is absorbed in the body portion 45 and the upper region of the material supply passage 46, and a cooling action is obtained for them.

Returning to FIGS. 2 and 3 , the supply device 13 is supported on the rear surface of the rear opening forming portion 34 of the cover member 12 via the support portion 60 . Here, the connection pipe 55 and the drooping portion 57c (not shown in FIG. 2) of the supply device 13 extend vertically, and their front ends are positioned at the same front and rear positions (see FIG. 5). Therefore, the front ends of the connection pipe 55 and the hanging portion 57c can be arranged so as to be in line contact with the rear surface of the rear opening forming portion 34, respectively. Become.

The support portion 60 includes a plate-shaped pressing member 61 extending left and right, and fastening members 62 provided on both sides in the extending direction of the pressing member 61 . The fastening member 62 is configured by a bolt or the like, and is provided so as to pass through the pressing member 61 and be screwed into the rear opening forming portion 34 . The pressing member 61 abuts on the connecting pipe 55 and the rear ends of the drooping portion 57c of the feeding device 13, and by tightening the fastening member 62 in this abutting state, the connecting pipe between the rear opening forming portion 34 and the rear opening forming portion 34 is pressed. The supply device 13 is supported by sandwiching the 55 and the hanging portion 57c. On the other hand, by releasing the tightening of the fastening member 62 from this state, the pressing member 61 and the supply device 13 can be separated from the rear opening forming portion 34 and the supply device 13 can be removed from the cover member 12 . That is, the support portion 60 enables the supply device 13 to be detachably supported on the cover member 12 .

Next, the internal structure of chamber 17 will be described with reference to FIGS. 7 to 9. FIG. 7 is a side sectional view of the chamber, FIG. 8 is a plan sectional view of the chamber, and FIG. 9 is a vertical sectional view of the chamber.

As shown in FIGS. 7 and 8, the chamber 17 constituting the water plasma generator 11 includes a chamber main body 70 forming a cylindrical inner peripheral surface extending in the front-rear direction, and a front wall portion mounted in front of the chamber main body 70. 71, forming an internal space 72 for generating water plasma inside them. An opening communicating with the internal space 72 is formed in the front wall portion 71, and an injection port forming plate 74 is attached so as to block the opening from the front. An injection port forming plate 74 is formed with an injection port 75 for injecting water plasma.

Inside the chamber main body 70, a rib 70a extending in the circumferential direction is formed at a position closer to the front, and a plasma water supply path 77 is formed on the front side of the rib 70a. Further, the front wall portion 71 is formed with a plasma water discharge passage 78 for discharging the plasma water flowing into the opening thereof. High-pressure plasma water is supplied from the high-pressure pump 27 to the plasma water supply path 77 , and the plasma water is sucked from the plasma water discharge path 78 by the negative pressure of the vacuum pump 28 .

A cooling water supply path 80 and a cooling water discharge path 81 (not shown in FIG. 8) are formed behind the rib 70a of the chamber body 70. As shown in FIG. Cooling water is supplied to the cooling water supply path 80 from the supply pump 26 , and the cooling water is sucked from the cooling water discharge path 81 by the negative pressure of the vacuum pump 28 . The plasma water supply path 77, the cooling water supply path 80, and the cooling water discharge path 81 are formed in the shape of a circular hole forming a cylindrical inner peripheral surface.

As shown in FIG. 9, the plasma water supply path 77 extends in the left-right direction while communicating with the lower portion of the internal space 72 which is circular in longitudinal cross-sectional view. Specifically, the plasma water supply path 77 extends in the tangential direction to the bottom of the internal space 72 . Thereby, the plasma water flowing from the plasma water supply path 77 smoothly flows along the circumferential direction of the internal space 72 .

The water plasma generator 11 includes a substantially cylindrical vortex water current generator 90 housed in the chamber 17 . The vortex water current generator 90 is arranged so that the internal space 72 and the center axis position C1 are aligned. The center axis position C1 coincides with the center axis position of the injection port 75 described above. In a vertical cross-sectional view, the internal space 72 forms a circular space between its inner peripheral surface and the outer peripheral surface of the vortex water current generator 90, and the plasma water that has flowed into the internal space 72 as described above has a circular shape. flows as if to swirl in the space of

A plurality of passages 91 are formed through the vortex water current generator 90 so as to communicate inside and outside. The passages 91 are formed at equal angles (every 120° in this embodiment) in the circumferential direction of the vortex water current generator 90 . Also, the passages 91 are formed at predetermined intervals in the front-rear direction (see FIGS. 7 and 8). Each passage 91 extends in a direction inclined with respect to the thickness direction of the vortex water current generator 90 . Specifically, each passage 91 extends tangentially to the inner circumference of the whirlpool generator 90 at the communicating position. The angle θ between the direction in which the water for plasma flows from the outside to the inside of the passage 91 and the direction in which the water for plasma flows swirling outside the whirlpool generator 90 is an acute angle.

Since the passage 91 is formed as described above, the plasma water flowing along the inner peripheral surface of the chamber main body 70 outside the vortex water flow generator 90 passes through the passage 91 and flows into the vortex water flow generator 90 . Then, the plasma water flows smoothly along the inner peripheral surface of the vortex water current generator 90, and a circular vortex water current is formed so as to form a cavity at the central axis position C1 in a vertical cross-sectional view. . Then, an arc discharge AR (see FIG. 10) is generated between the anode 18 and the cathode 16 so as to pass through the cavity formed by the vortex water flow.

The water plasma generator 11 further includes various configurations behind the vortex water current generator 90 within the chamber 17 . With this configuration, positioning of the vortex water current generator 90, cooling of the cathode 16, holding and movement control, power supply to the cathode 16, etc. are performed, but the description is omitted here.

Next, a method for decomposing hazardous waste by the decomposition processing apparatus 10 of the present embodiment will be described with reference to FIG. FIG. 10 is an explanatory diagram of the decomposition treatment of hazardous waste. Here, as shown in FIG. 10 , the anode 18 is provided so that its upper end is positioned in the vicinity of the diagonally lower front side of the injection port 75 outside the chamber 17 . In addition, the supply device 13 is provided separately in front, which is outside the chamber 17, and is arranged so that the center axis position of the main body part 45 and the center axis position of the injection port 75 are aligned substantially on the same straight line. .

When DC power is supplied to the cathode 16 and the anode 18 in a state in which the vortex water flow having the cavity is formed as described above, an arc discharge AR is generated between them. At this time, an arc discharge AR is generated so as to pass through the cavity of the eddy current. The generation of the arc discharge AR dissociates and ionizes the plasma water that forms the vortex water flow, and a water plasma jet stream J that becomes high energy is injected from the injection port 75 .

The water plasma jet stream J ejected from the injection port 75 becomes an extremely high-temperature, ultra-high-speed fluid, and is introduced into the interior of the main body 45 arranged in front of the injection port 75 of the chamber 17 . At this time, the injection direction of the water plasma jet stream J is along the front-rear direction, and the cylindrical main body 45 also extends along the front-rear direction, so the jet stream J is well introduced into the main body 45 . Further, in the supply device 13 , hazardous waste is supplied into the body portion 45 through the material supply path 46 . Then, the hazardous waste supplied into the main body 45 is decomposed by the water plasma jet stream J introduced into the main body 45 .

Examples of hazardous wastes include PCB, sulfate pitch, asbestos, freon, halon, tires, and various types of waste, which are supplied through the supply device 13 in the form of granules, powder, or liquid. Even if such hazardous waste is put in, it can be decomposed into harmless waste.

While the cover member 12 (see FIG. 2) is heated during the decomposition treatment of the hazardous waste, it can be cooled and used by passing cooling water through its thickness. Further, the main body 45 and the material supply path 46 of the supply device 13 are also heated by receiving a large amount of energy because they are located in the jet stream J of the water plasma or close to the jet stream J. However, since the cooling space 59 of the cooling unit 47 is formed in the heated portion and cooling water is passed through the cooling space 59, damage due to heating can be effectively suppressed.

According to the first embodiment, when the hazardous waste is decomposed by the water plasma jetted from the chamber 17, the hazardous waste can be supplied while introducing the water plasma into the tubular main body 45. can. As a result, the supplied hazardous waste can be prevented from scattering in the space enclosed by the main body 45, and the hazardous waste is supplied to the portion of the water plasma that becomes particularly high temperature to perform the decomposition treatment under favorable conditions. be able to. As a result, the supplied hazardous waste can be efficiently decomposed into gasified waste, and the reliability of the decomposition can be enhanced.

In addition, since the supply device 13 is detachably supported by the cover member 12 via the support portion 60, the supply device 13 can be positioned with a simple structure using the cover member 12, and replacement of the supply device 13, etc., is possible. can be easily done. Thus, by preparing a plurality of supply devices 13 having different diameters and lengths of the main body 45 and different diameters of the material supply paths 46, it is possible to deal with various conditions such as hazardous waste.

Furthermore, since the tapered surface 50a is formed on the inner peripheral surface of the main body 45 into which the water plasma is introduced, the jet stream J of the water plasma can be guided toward the central axis position of the main body 45. Also, hazardous waste can be efficiently decomposed.

In addition, since the shape of the opening of the material supply path 46 to the main body 45 is elongated in the water plasma injection direction, the hazardous waste can be concentrated at the center position of the water plasma, and the hazardous waste can be decomposed well at a high temperature. be able to process. The shape of the opening is not limited to an elongated oval or elliptical shape in the front-rear direction, but may be circular, square, rectangular, or elongated in the left-right direction as long as the hazardous waste can be decomposed. .

[Second embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 11 and 12. FIG. In the following description, the same reference numerals may be used for components that are the same as or equivalent to those in the first embodiment, and the description may be omitted or simplified.

FIG. 11 is a schematic perspective view of a supply device according to a second embodiment as viewed in side cross section. FIG. 12 is a side cross-sectional view of the supply device according to the second embodiment. As shown in FIGS. 11 and 12, in the second embodiment, a supply port forming body 100 is detachably provided at the upper end of the material supply path 46 in contrast to the first embodiment. 11 and 12, illustration of the supply pipe 56 is omitted.

The supply port forming body 100 is provided in a shape obtained by processing a hexagon socket set screw. The supply port forming body 100 includes a shaft portion 101 having a hexagonal hole 101a formed in its upper portion and having a center axis directed vertically, and a male screw portion 102 formed on the outer peripheral surface of the shaft portion 101 (unevenness of the screw is not shown). ) and

A tapered concave portion 103 that gradually widens downward is formed in the lower end portion of the shaft portion 101 . A flow path 104 through which hazardous wastes (objects to be decomposed) flow is formed at a position where the central axis of the shaft portion 101 overlaps between the upper end of the recessed portion 103 and the bottom of the hexagonal hole 101a. In the second embodiment, channel 104 is formed in a circular hole shape.

A female threaded portion 106 (thread unevenness is not shown) that is screwed into the male threaded portion 102 is formed on the inner peripheral surface of the upper end portion (the end portion on the main body portion 45 side) of the material supply path 46 . The vertical length of the female threaded portion 106 is substantially the same as the vertical length of the male threaded portion 102 (shaft portion 101). formed. Therefore, in a state where the lower end of the shaft portion 101 is screwed into contact with the stepped portion 107 , the supply port forming body 100 is provided so as not to protrude from the inner peripheral surface of the inner cylindrical portion 50 and the upper end of the material supply passage 46 .

A ring-shaped elastic body 108 is provided in the groove formed in the step portion 107 . Since the lower end of the shaft portion 101 is pressed against the elastic body 108 , good airtightness and liquid tightness are maintained between the supply port forming body 100 and the material supply path 46 . loosening can be prevented.

According to the second embodiment, by inserting a tool into the hexagonal hole 101a and rotating it, the supply port forming body 100 screwed to the material supply path 46 can be made detachable. The formation 100 can be easily replaced. As a result, even when the flow path 104 and the supply port forming body 100 become dirty over time due to the decomposition treatment of hazardous waste, it can be dealt with by replacing the other supply port forming body 100, thereby facilitating maintenance. can be planned.

Further, by preparing a plurality of supply port forming bodies 100 having different opening shapes and opening sizes of the flow paths 104, various flow paths 104 can be selected. As a result, it is possible to adjust the supply amount and supply mode of hazardous waste through the flow path 104, and to efficiently and reliably decompose various hazardous wastes. Examples of the shape of the opening of the channel 104 include an oval or elliptical shape elongated in the front-rear direction or the left-right direction, a square shape, or a rectangular shape.

It should be noted that the present invention is not limited to the above embodiments, and can be implemented with various modifications. In the above embodiments, the sizes, shapes, directions, etc. shown in the accompanying drawings are not limited to these, and can be changed as appropriate within the scope of exhibiting the effects of the present invention. In addition, it is possible to carry out by appropriately modifying the present invention as long as it does not deviate from the scope of the purpose of the present invention.

For example, in each of the above-described embodiments, the material to be decomposed is supplied from below the main body 45 through the material supply path 46 by the supply device 13, but the material supply path 46 is provided above the main body 45 so that the material supply path 46 is provided from above. You may supply decomposition|disassembly object.

Also, the structure supporting the supply device 13 may be changed as long as the positional relationship with the chamber 17 can be positioned as described above. However, it is advantageous to support the cover member 12 through the support portion 60 in that the configuration can be simplified.

Further, the object to be decomposed by the water plasma generator 11 is not limited to the hazardous waste described above, and may be a non-hazardous object to be decomposed.

Moreover, the water plasma generator 11 is not limited to being used for waste treatment, and can be used for any treatment using water plasma such as thermal spraying.

ADVANTAGE OF THE INVENTION This invention acquires the effect that the decomposition target can be efficiently decomposed by the water plasma injected from the water plasma generator.

This application is based on Japanese Patent Application No. 2018-210462 filed on November 8, 2018. All of this content is included here.

Claims (7)

a water plasma generator for injecting water plasma by causing an arc discharge to pass through the vortex water flow;
and a supply device for supplying a decomposition target to the jet stream of the water plasma, the decomposition processing device configured to decompose the decomposition target by the water plasma,
The water plasma generator includes a chamber for forming the vortex water flow inside and injecting the water plasma from an injection port, and an anode and a cathode for generating an arc discharge passing through the vortex water flow in the chamber. , the anode is provided at a position near the injection port outside the chamber,
The supply device includes a main body formed in a cylindrical shape extending in the jetting direction of the water plasma and into which the water plasma is introduced; a cooling part for cooling the main body; a material supply path for supplying an object, provided outside the chamber away from the chamber ,
The decomposition treatment apparatus further comprises a cover member that covers the water plasma injected by the water plasma generator . The material supply path is connected to the main body,
The cooling unit has a cooling space in which cooling water flows, and the cooling space is formed so as to communicate with a region extending from the main body and a connection point of the material supply path to the main body. The decomposition treatment apparatus according to claim 1. The main body is formed in a double tubular shape including an inner tubular portion forming an inner peripheral surface and an outer tubular portion forming an outer peripheral surface,
The cooling unit includes a connection pipe provided to cover while forming a space between the outer peripheral side of the material supply path,
2. The cooling space is formed by communicating a space between the connecting pipe and the material supply path and a space between the inner tubular portion and the outer tubular portion. The decomposition treatment apparatus according to . a cover member covering the water plasma injected by the water plasma generator;
4. The decomposition treatment apparatus according to any one of claims 1 to 3, further comprising a support portion that detachably supports said supply device on said cover member. 5. An inner peripheral surface of the main body into which the water plasma is introduced is formed by a tapered surface that approaches the central axis of the main body as the distance from the injection port increases. The decomposition treatment apparatus according to any one of 1. A supply port forming body through which the decomposition target material supplied from the material supply path to the main body flows is detachably provided at an end portion of the material supply path on the main body side. The decomposition treatment apparatus according to any one of claims 1 to 5 . 7. The apparatus according to claim 6 , wherein a male threaded portion is formed on the outer peripheral surface of said supply port forming body, and a female threaded portion that is screwed into said male threaded portion is formed on the inner peripheral surface of said material supply path. decomposition equipment.

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