Organic waste combustion treatment system and organic waste treatment method

Abstract

To provide an organic waste combustion treatment system that can make dioxins harmless even if dioxins are generated during incineration of waste and that can minimally reduce or clear an organic matter contained in waste by incineration treatment.SOLUTION: There is provided an organic waste combustion treatment system comprising: a primary unit 10 that heats charged organic waste to a temperature exceeding boiling points of substances constituting the charged organic waste, and pyrolyzes the organic matter to produce a solid residue mainly consisting of gas products, which are non-flammable gases other than dioxins, and carbon; a secondary unit 20 that retains the gas products generated by the primary unit 10 under high a temperature to re-pyrolyze the gas products so that they are made harmless (decomposed); and a tertiary unit 30 that rapidly cools the high-temperature gas made harmless by the secondary unit 20 with cooling water to suppress reproduction of harmful substances including dioxins.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an organic waste combustion treatment system and an organic waste treatment method. [Background technology]

[0002] The general disposal method for combustible waste generated from ordinary homes and businesses is to collect it in a collection vehicle and bring it to an incineration plant, where a large amount of waste is incinerated in one place. In addition, the incineration ash that remains after the incineration process is often disposed of by landfilling in specially set up treatment plants.

[0003] However, when incinerating materials at high temperatures using a combustion furnace or the like, harmful gases such as dioxins are likely to be generated. In particular, when incinerating waste materials using a small combustion furnace, the materials are not burned evenly throughout and are prone to incomplete combustion. As a result, there are cases where a lot of bad odors, strange smells, smoldering smoke, etc. are generated, which can be a nuisance to those around.

[0004] In order to deal with the problems of the generation of harmful gases and foul and unpleasant odors as described above, it has been proposed to carry out incineration treatment using appropriate treatment means (see, for example, Patent Document 1). Patent Document 1 claims that the generation of harmful gases such as dioxins can be prevented by using a technical means for incinerating waste at low temperatures.

[0005] However, in conventional small incinerators, the function of supplying air uniformly inside is not performed well, and some parts burn at high temperatures, while other parts are in a steaming state at low temperatures, which makes it particularly easy to generate dioxins. Even if a low-temperature disposal method in a steaming state is used to deal with the problem of the generation of harmful gases as described above, a combustion method such as oxygen-free combustion cannot be easily realized. In fact, when combustible waste is detoxified, for example, both the supply mechanism for the gas used in combustion and the method for discharging the exhaust gas are often performed using relatively complicated processing methods. For this reason, it is considered that the maintenance and management of the equipment is difficult, and many problems remain to be solved.

[0006] Therefore, a device has been proposed that uses a thermal (combustion) processing means to burn combustible waste at high temperatures in the center of the combustion section, steam-bake the waste at lower temperatures around the high-temperature section as it approaches the outside, and evaporate moisture in the surrounding low-temperature area, thereby improving combustion efficiency and preventing the generation of harmful gases such as dioxins, and making it easy to process combustible waste using a small device (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2004-136249 A [Patent Document 2] JP 2009-30877 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the case of the system described in the cited document 2, the waste is burned at a low temperature below the temperature at which dioxins are generated, which is convenient in that respect, but there is a high possibility that the waste to be disposed of cannot be effectively treated due to the low temperature combustion, and a large amount of residue will be formed. Therefore, the problem of waste incineration is not solved, and the system is fraught with problems such as not being viable as an incineration plant.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide an organic waste combustion treatment system and an organic waste treatment method which can render harmless any dioxins generated during waste incineration, and which can effectively treat the waste, particularly by minimizing or eliminating the organic matter contained in the waste through incineration, and which can also minimize the residue after incineration. [Means for solving the problem]

[0010] The organic waste combustion treatment system according to the present invention comprises a primary device which heats input organic waste to a temperature exceeding the boiling point of each of the constituent substances of the waste, thereby thermally decomposing the organic matter and generating a gaseous product which is a non-combustible gas other than dioxins, and a solid residue mainly composed of carbon; A secondary device that decomposes the gaseous product generated in the primary device by retaining it under high temperature heating and pyrolyzing it again, thereby rendering it harmless (decomposing it); and a tertiary device that uses cooling water to rapidly cool the high-temperature gas that has been detoxified in the secondary device, thereby suppressing the regeneration of harmful substances including dioxins. The cooling water used in the tertiary device is reused after impurities in the cooling water are removed by a filter, and the impurities are returned to the primary device for reprocessing.

[0011] Another aspect of the organic waste combustion treatment system according to the present invention is a thermal decomposition device constituting a primary device, the thermal decomposition device being provided with a thermal decomposition chamber that generates a low oxygen concentration state below the oxygen concentration (limit oxygen concentration) at which the organic waste undergoes a combustion reaction, supplies ozone, and maintains an environmental condition below the temperature at which solid matter disappears due to vaporization or sublimation of the organic waste to be incinerated; a calcination device constituting a secondary device, the calcination device including a calcination chamber for exposing the dioxins generated in the pyrolysis chamber to a high-temperature environment, thereby burning them off, decomposing them, and rendering them harmless; A cooling device constituting a tertiary device, the cooling device being provided with a cooling chamber in which a spiral capillary tube through which cold water flows is installed and into which the vaporized calcined product generated in the calcination chamber is sent, and a discharge port for discharging the vaporized calcined product that has become a predetermined concentration or less from within the cooling chamber into the atmosphere and / or a return path for returning the vaporized calcined product to the pyrolysis chamber; The present invention is characterized by comprising:

[0012] In another aspect of the organic waste combustion treatment system according to the present invention, the primary device comprises: A combustion (pyrolysis) furnace body with an opening at the top center for putting organic waste inside; A heat source provided on the lower side or bottom of the combustion (pyrolysis) furnace body; A dispersing means for uniformly stirring the organic waste inside the combustion (pyrolysis) furnace body; An ozone generator for supplying ozone to the combustion (pyrolysis) furnace body; The present invention is characterized by comprising:

[0013] The organic waste combustion treatment system according to the present invention is characterized in that the secondary device comprises a pair of flat metal plate-like bodies separated by a small gap, which are bent continuously multiple times to form a long, continuous, narrow flow path, and which have electric heating elements stretched throughout the plate facing the flow path, and the pair of plate-like bodies constitute retention means for maintaining and exposing the gaseous product moving along the flow path formed by the gap to a temperature range of 850°C to 1000°C, which is higher than the temperature at which dioxins are produced.

[0014] The organic waste treatment system according to the present invention is characterized in that the oxygen concentration in the primary device is within a range of 14 to 17%.

[0015] The organic waste treatment system of the present invention is characterized in that the primary equipment, the secondary equipment, and the tertiary equipment are each formed separately, and the layout of each equipment can be changed depending on the installation location.

[0016] The organic waste treatment method of the present invention includes a first step of feeding organic waste under low-oxygen conditions into a primary device that includes a combustion (pyrolysis) furnace body with an opening at the top center for feeding the organic waste therein, a heat source provided at the bottom of the combustion (pyrolysis) furnace body, a dispersing means for uniformly stirring the organic waste inside the combustion (pyrolysis) furnace body, and an ozone generator connected to the combustion (pyrolysis) furnace body for supplying ozone, and heating the organic waste to a temperature exceeding the boiling points of each substance constituting the organic waste, thereby thermally decomposing the organic matter to generate a gaseous product that is a non-combustible gas other than dioxins and a solid residue mainly composed of carbon; The secondary device is provided with a plate-like metal plate that is paired with a small gap between them and that is bent continuously multiple times to form a long, continuous, narrow flow path, and has an electric heating element stretched within the plate facing the flow path, and the plate-like metal plate constitutes a retention means that maintains and exposes the gaseous product moving along the flow path formed by the gap to a temperature range of 850°C to 1000°C, which is higher than the temperature at which dioxins are generated. A second step exposes the dioxins generated in the pyrolysis chamber to a high-temperature environment, burns them off, and decomposes them to make them harmless; a cooling chamber in which a spiral thin tube through which cold water flows is installed and into which the vaporized calcined product generated in the calcination chamber of the secondary device is sent, and an outlet for discharging the vaporized calcined product that has become a predetermined concentration or less from the cooling chamber into the atmosphere and / or a return path for returning the vaporized calcined product to the pyrolysis chamber, and a third process is provided in which the high-temperature gas that has been detoxified in the second process is rapidly cooled with cooling water to suppress the regeneration of harmful substances including dioxins; The present invention is characterized by comprising: Effect of the Invention

[0017] According to the organic waste combustion treatment system of the present invention, even if dioxins are generated during waste incineration, these can be rendered harmless, and by effectively treating the waste, the organic matter contained in the waste in particular can be reduced to a minimum or eliminated by incineration, and the residue after incineration can also be kept to a minimum. [Brief description of the drawings]

[0018] [Figure 1] 1 is a front view showing a schematic configuration of an organic waste combustion treatment system according to an embodiment of the present invention. [Diagram 2] 1 is a plan view showing a schematic configuration of an organic waste combustion treatment system according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view showing a schematic configuration of a dispersion device in a primary device of an organic waste combustion treatment system according to an embodiment of the present invention. [Figure 4] FIG. 1A is a perspective view showing a diffusion cage of an organic waste incineration treatment system according to an embodiment of the present invention, and FIG. [Diagram 5] FIG. 2 is a perspective view showing a schematic configuration of a pyrolysis chamber in a secondary device of an organic waste combustion treatment system according to an embodiment of the present invention. [Figure 6] FIG. 2 is a principle diagram showing a schematic configuration of a tertiary device of the organic waste combustion treatment system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The gist of the present invention is characterized by comprising a primary device for heating the input organic waste to a temperature exceeding the boiling point of each of the constituent substances to thermally decompose the organic matter and generate a gaseous product that is a non-combustible gas other than dioxins and a solid residue mainly composed of carbon, a secondary device for detoxifying (decomposing) the gaseous product generated in the primary device by retaining it under high-temperature heating and pyrolyzing it again, and a tertiary device for rapidly cooling the high-temperature gas detoxified in the secondary device with cooling water to suppress the regeneration of harmful substances including dioxins, and the cooling water used in the tertiary device is reused after removing contaminants from the cooling water by a filter, and the contaminants are returned to the primary device for reprocessing. This aims to provide an organic waste combustion treatment system that can detoxify dioxins even if they are generated during waste incineration, and can effectively treat the waste to minimize or eliminate organic matter contained in the waste by incineration, specifically by thermal decomposition, and can also minimize the residue after incineration.

[0020] Hereinafter, an embodiment of an organic waste incineration treatment system according to the present invention will be described with reference to the drawings. In each of the drawings used in this description, in order to clarify the arrangement of each device, mutually orthogonal XYZ three-dimensional Cartesian coordinates are used. Note that this three-dimensional coordinate system is displayed in a right-handed system, but the origin position is not set to a specific location.

[0021] <Embodiment> Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention. Organic waste combustion treatment system Show 1 shows a schematic external front view and a schematic external plan view. According to the present embodiment Organic waste combustion treatment system The outline of the configuration is as follows: primary Device 10 and , secondary An apparatus 20; Tertiary and a device 30, primary Device 10 and secondary Between device 20 , and secondary Device 20 and Tertiary In this embodiment, each of the following devices is connected to the device 30: In order to prevent the gaseous products generated in the device from flowing back into the original device, Although not shown in FIG. 2, a backflow prevention means such as a check valve is provided in the vent pipe P1 that connects the devices. and P2 (or the outlet or inlet of each device, not shown). In addition, the pressure in each downstream device is controlled and adjusted to prevent backflow due to pressure differences. It may be configured such that (for example, the internal pressure of the primary device>the internal pressure of the secondary device>the internal pressure of the tertiary device). [Organic waste combustion treatment system configuration]

[0022] About the primary equipment: The primary device 10 heats the organic waste to a temperature exceeding the boiling point of each of the constituent substances, thereby pyrolyzing the organic matter and generating a gaseous product that is a non-combustible gas other than dioxins, and a solid residue that is mainly composed of carbon. More specifically, the primary device 10 generates a low-oxygen concentration state below the oxygen concentration (limit oxygen concentration) at which the organic waste will undergo a combustion reaction, and also generates ozone (O 3 The primary device (hereinafter, the primary device 10 will be referred to as "pyrolysis device 10") is a pyrolysis device that supplies ozone gas (O2) and has a pyrolysis chamber that maintains environmental conditions below the temperature at which solid matter disappears due to vaporization or sublimation of the organic waste to be incinerated. In addition, in order to supply the above-mentioned ozone, an ozone generator 40 is installed nearby the pyrolysis device 10, and the pyrolysis device 10 is configured to supply ozone through a supply pipe 41 into the pyrolysis device 10. Note that, here, organic waste refers to waste that contains organic matter, and does not mean waste that does not contain any inorganic matter or metals.

[0023] this primary device 10 has an opening 11A at the top center for inserting organic waste. Combustion furnaceThe furnace body 11 is equipped with a main body (hereinafter referred to as "furnace body 11"), a heat source 12 provided on the bottom side inside the furnace body 11, a dispersion means 13 for uniformly stirring the organic waste inside the furnace body 11, and the above-mentioned ozone generator 40 for supplying ozone to the furnace body 11. In addition to the heat source 12, the furnace body 11 is further equipped with a heat source device 14 inside a diffusion cage 42 described later, so that a temperature described later can be reliably maintained.

[0024] The furnace body 11 has a generally hollow cylindrical or box-like shape, and is made of a heat-resistant material that can withstand high temperatures, especially since the inside may be exposed to high temperatures. Also, since the opening 11A is opened only when the waste is to be fed, it is normally closed with a lid 11B during combustion, and is made of a robust material similar to the furnace body 11 to prevent it from being destroyed or flying out due to the high pressure inside, and is configured so that it can be firmly fixed by fixing means (not shown).

[0025] The heat source 12 can be any of a variety of heating means that is heated by electricity supplied from an external source and dissipates heat. In this embodiment, the heat source 12 is composed of an electric heating rod that generates heat and dissipates Joule heat, and a large number of such rods are arranged at predetermined intervals.

[0026] As shown in FIG. 3, in this embodiment, the dispersion means 13 is made of a heat-resistant metal. For example, the central body 13 has a substantially conical shape (or a polygonal pyramid shape such as a quadrangular pyramid shape). A and this central body 13A and the end portion is attached to the inner wall surface of the furnace body 11. Ku Radial body 13B. Moreover, each member constituting this dispersion means is a throw-in drop. It is made of a highly smooth material to prevent the organic waste from getting stuck as it descends.

[0027] The central body 13A is installed so as to be located directly below the opening 11A inside the furnace main body 11. By making the central body 13A approximately conical (or polygonal pyramid such as a square pyramid) in this way, the organic waste input from the opening 11A directly above is dispersed to the periphery. This prevents the input organic waste from concentrating and accumulating in the center of the main body interior 11.

[0028] The radial bodies 13B are for supporting the central body 13A, and consist of a number of (at least two or more than three) bodies with a roughly triangular cross section that extend around the central body 13A. Each radial body 13B is also configured with a shape that forms an acute angle at the central apex, so that organic waste put in from the opening is prevented from getting caught by the radial bodies 13B and piling up.

[0029] In the present embodiment, as shown in FIG. 1, the heat source device 14 is formed in a hollow, approximately truncated cone shape (or hollow truncated pyramid shape) using a suitable material such as heat-resistant metal or ceramics that can withstand high heat, and has an open top and bottom. A heating element (not shown) that generates heat when electricity is applied thereto is provided on the outer circumferential surface (not shown) of the body 12A. Note that, inside the furnace body 11 heated by the heat source 12, the operating temperature when a thermally stable state is reached is maintained at 850°C or higher at the bottom of the furnace body 12A where the heat source 12 is installed, for example, during a stable operating state. This causes the organic waste to be heated to a temperature exceeding the boiling point of each substance that constitutes the organic waste, causing pyrolysis rather than combustion.

[0030] The ozone generator 40 is for realizing and promoting the thermal decomposition of the input organic waste, rather than combustion by oxygen binding, and in this embodiment, is connected and communicated with a diffusion cage 42 arranged in the center inside the furnace body 11 via a supply pipe 41. This ozone generator 40 supplies the generated ozone to the furnace body 11, thereby relatively lowering the oxygen concentration inside the furnace body 11, but is pressurized to a higher pressure than the internal pressure p1 of the furnace body 11, preventing various gases generated inside the furnace body 11 from entering the ozone generator 40.

[0031] As shown in FIG. 2 The ozone generator 40 supplies ozone (O 3 In the furnace 11, a large number of pipes 43 are provided for ejecting the oxygen gas from the fine holes 43A. This allows an atmosphere with an oxygen concentration below the limit oxygen concentration to be realized, and the pyrolysis reaction can be carried out reliably. Since the diffusion cage 42 is installed in the center of the furnace body 11, it may be suspended by a fixing means (not shown), but it may also be suspended from the flat bottom of each radial body 13B of the dispersion means 13 by a plurality of sturdy and heat-resistant suspension members (not shown).

[0032] In this embodiment, the ozone generator 40 is configured to promote thermal decomposition to suppress the generation of dioxins, but an inert gas may be supplied instead of ozone. Note that, although the low oxygen concentration inside the furnace body 11 in this embodiment is set and maintained at 14% to 17%, the present invention is not particularly limited to this concentration, and any concentration that has a similar effect may be used.

[0033] Regarding secondary devices: The secondary device 20 is used to treat the dioxin-containing gas that was not pyrolyzed in the primary device 10, or the various gaseous products that were generated (e.g., NH 4 ,NO 2The secondary device 20 takes in dioxins generated in the furnace body 11 constituting the thermal decomposition chamber 21 of the primary device 10, or dioxins contained in the generated gaseous products, and decomposes them by subjecting them to a high-temperature environment to burn them off, and is provided with a burning chamber that decomposes them by thermal decomposition again to render them harmless.

[0034] this pyrolysis chamber In this embodiment, as shown in FIG. 5, the number of The plate-like bodies 22 are arranged in pairs with a small gap between them. , The gaps between the plates 22 are filled with ventilation members 23. Multiple times in succession Approximately Z-shaped cross section Fold it to form Will be This creates a continuous series of narrow For ventilation Flow Path but Long Formation Will be .

[0035] The plate-like body 22 is made of a flat metal plate, and an electric heater is provided in the plate facing the flow path. It is spread all over the place. pyrolysis chamber The plate-like body 22 and the ventilation member 23 in the plate-like body 21 are provided with the following components. The heating element is embedded in the housing and is not electrically connected to an external power source. This generates Joule heat, pyrolysis chamber The temperature inside 21 is the temperature at which dioxins are produced. The tank is kept at a high temperature of 850-1000°C, exceeding the normal temperature.

[0036] Furthermore, in each passage forming the gap between each plate-like body 22, fine mesh-like ventilation members 23 (e.g., stainless steel SUS3016, etc.) made of punching metal or the like with numerous small holes are formed in a zigzag arrangement so as to diagonally cross the flow of various gas products, thereby increasing the contact area with dioxins in the gas products passing through.

[0037] this pyrolysis chamberIn 21, the gas that was not pyrolyzed in the primary device 10 or the gas that was generated is When the cellular product is fed, it passes through a number of passages where it is heated to a high temperature and then That is, the pair of plates 22 move along the flow path defined by the gap. The gaseous products are heated to temperatures between 850℃ and 1000℃, which is higher than the temperature at which dioxins are formed. Therefore, in the present invention, in particular, a small hole is provided in the ventilation member. By doing so, the gas passing through each passage is exposed to heating for a longer period of time. Therefore, the thermal decomposition time can be extended accordingly.

[0038] this pyrolysis chamber Dioxins are reheated by prolonged exposure to high temperatures in the The decomposition products are detoxified and detoxified, and the detoxified decomposition products are then passed on to the next tertiary treatment plant. The processed product is sent to station 30.

[0039] About the tertiary device 30: The tertiary device 30 uses cooling water to rapidly cool the high-temperature gas that has been detoxified in the secondary device 20, thereby suppressing and preventing the regeneration of harmful substances including dioxins.

[0040] As shown in FIG. 6, the tertiary device 30 of this embodiment includes: Device body (Hereafter, cooling chamber 31 A spiral capillary 32 for passing cold water is arranged around the wall or inside of the casing. In this cooling chamber 31, the secondary device 20 Combustion chamber 21 When the vaporized calcined product is sent to The vaporized calcined product having a concentration below a predetermined level is discharged from the cooling chamber 31 to the atmosphere through a discharge port 33. In the present invention, the wastewater is rendered harmless in the cooling chamber 31 and discharged from the discharge port 33. The detoxified gas and other residues are liquefied, and the contaminants remaining at the bottom of the cooling chamber 31 are removed. In some cases, harmful liquid substances containing liquid residue (hereinafter referred to as "liquid residue") may be generated. In case the latter occurs, a space not shown in the figure is provided between the bottom of the cooling chamber 31 and the primary device 10. A return path may be provided. With this configuration, harmful substances such as residues remaining at the bottom can be easily removed. The contaminated liquid may be returned to the primary device 10 and subjected to the same process again.

[0041] In the tertiary device 30, the high-temperature gas that has been detoxified in the secondary device 20 is rapidly cooled with cooling water. It cools the air and inhibits the regeneration of various harmful substances, including dioxins. It is kept at a low temperature where there is no risk of resynthesis (denovo reaction), i.e. below 200°C. At this time, it is harmless The gases that are below the legally regulated concentration are listed in the upper Thin tube Discard from 32 In addition, the liquefied residue is subjected to processing such as filtration using a filter not shown.

[0042] That is, harmful substances remaining in the liquid after filtering by a filter (not shown) are returned to the primary device 10 via a return pipe (not shown) and vaporized, and the process is repeated from the beginning. Meanwhile, liquid mixed with liquid residues that have liquefied and accumulated at the bottom of the cooling chamber 31 is separated by being left in a filter provided in a filter (not shown). Then, when a certain amount of impurities remain in this filter, they are removed together with the filter and thrown into the furnace body 11 of the primary device for reprocessing, so the filter is equipped with a cassette-type filter.

[0043] On the other hand, the cooling water used in the tertiary device 30 may partly become steam in the capillary tubes 32 at the terminal end, and this cooling water or steam is reused via pump P. If the cooling water is contaminated, a filter 34 dedicated to cooling water is installed in a part of the flow path of the capillary tubes 32, and the purified cooling water after removing impurities in the steam is returned to the capillary tubes 32 again.

[0044] In addition, it can also be mixed into cooling water, filter 34 The residue in the filter installed in The contaminants that are separated are filtered using a filter with the same structure as that for liquids that contain the above-mentioned liquefied harmful substances as residue. That is, when a certain amount of impurities accumulate in the filter, the filter may be removed. The cassette-type The tertiary device 30 may be configured as a filter equipped with a filter. The steam generated can be sent to the turbine (not shown) for use in generating electricity. good.

[0045] [Action and Effects] As explained above, according to this embodiment, the organic waste is theoretically free of any organic matter other than inorganic matter contained therein by the primary device 10 and the secondary device 20. Therefore, if this device is adopted in an industrial waste treatment center, for example, it can dramatically reduce the generation of dioxins that accompany organic waste treatment, and can contribute to the conservation of the global environment, providing significant benefits and convenience.

[0046] Although a preferred embodiment of the present invention has been described above, the present invention is not limited to such a specific embodiment, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims. For example, as an alternative to an ozone generator, a plasma generator, or generation by spatial discharge when an alternating current is applied between electrodes, or other suitable means are possible. In addition, when decomposing organic waste by thermal decomposition, it is preferable to add the above-mentioned chemicals to waste such as vinyl chloride, since this can suppress the generation of harmful gases. [Explanation of symbols]

[0047] 1. Organic waste combustion treatment system 10 Primary device 11 Combustion (pyrolysis) furnace body (furnace body) 11A aperture 11B Lid body 12 Heat source 13 Dispersion means 13A Central Body 13B Emitter 14 Heat source device 20 Secondary device 21 Pyrolysis chamber 22 Plate-shaped body 23 Ventilation material 30 Tertiary device 31 Cooling room 32 Thin tube 33 Outlet 34 Filter 42 Diffusion Cage 42A opening 43 Piping 43A Hole P1, P2 ventilation pipes

Claims

1. For the organic waste input, a hypoxic state generating mechanism connected to the primary device and generating an inert gas; Under a low oxygen concentration state formed by filling the inert gas, which is less than a limit oxygen concentration, which is the lower limit of the oxygen concentration at which the organic waste undergoes a combustion reaction, The organic waste is heated to a temperature of 850° C. or higher at the bottom of the furnace body where the heat source is disposed, which is equal to or higher than the boiling point of each substance constituting the organic waste. a primary device for thermally decomposing the organic waste to generate a gaseous product containing dioxins and non-combustible gases other than dioxins, and a solid residue mainly composed of carbon; a secondary device for thermally decomposing the dioxins by retaining the gaseous product produced in the primary device under high-temperature heating and thermally decomposing the dioxins again to produce high-temperature gas; a tertiary device that rapidly cools the high-temperature gas that has been detoxified in the secondary device with cooling water to suppress regeneration of harmful substances including dioxins; It consists of: The hypoxic condition forming mechanism is configured to spray an inert gas from a side of the organic waste that has been input, The rising heat of the primary device is performed by a heat source disposed at least either above or below the organic waste that is introduced. An organic waste incineration treatment system comprising:

2. For the organic waste to be input, a hypoxic state generating mechanism connected to the primary device and generating an inert gas; Under a low oxygen concentration state formed by filling the inert gas, which is less than a limit oxygen concentration, which is the lower limit of the oxygen concentration at which the organic waste undergoes a combustion reaction, The organic waste is heated to a temperature of 850° C. or higher at the bottom of the furnace body where the heat source is disposed, which is equal to or higher than the boiling point of each substance constituting the organic waste. a primary device for thermally decomposing the organic waste to generate a gaseous product containing dioxins and non-combustible gases other than dioxins, and a solid residue mainly composed of carbon; a secondary device for thermally decomposing the dioxins by retaining the gaseous product produced in the primary device under high-temperature heating and thermally decomposing the dioxins again to produce high-temperature gas; a tertiary device that rapidly cools the high-temperature gas that has been detoxified in the secondary device with cooling water to suppress regeneration of harmful substances including dioxins; It consists of: The mechanism of forming a hypoxic state is as follows: In this embodiment, the inert gas is sprayed from 3 / 4 of the entire surface surrounding the lateral periphery of the organic waste. The heating mechanism of the primary device is composed of a heat source disposed above the organic waste and a heat source device disposed below the organic waste. An organic waste incineration treatment system comprising:

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