JP2000039267A - Refuse melting furnace and refuse melting equipment using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To melt refuse continuously by providing a section for feeding refuse to a melting section in a furnace chamber, and a section for feeding particulate thermit mixture and disposing a molten slug discharging section on the downstream side of the melting section in a furnace chamber. SOLUTION: The refuse melting furnace 1 comprises a furnace body 2, a central refuse throw-in pipe 9, a thermit mixture throw-in pipe 11, a melting section 31, and a molten slug discharging section 33. A central feeding pipe 9a is inserted into a top cover section 3 while conducting with the central refuse throw-in pipe 9 has a feeding end part, at the lower part thereof, extended to the central feeding section 32 in the furnace chamber 30. Lower end part of the central feeding pipe 9a is bent toward the melting section 31 and opened, at the forward end thereof, toward the melting section. A molten slug guide 12a is formed in eaves shape at the fringe of an opening in the furnace chamber 30 at a molten slug outlet 12. Molten slug is discharged while dripping from the molten slug guide 12a of eaves shape to the outside of the furnace chamber 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste melting furnace for melting waste using heat generated by a thermite reaction.

[0002]

2. Description of the Related Art In recent years, toxic substances such as heavy metals and dioxins contained in waste such as residual ash after incineration of garbage discharged from households and factories have been released into the environment, which has become a problem. There is a need for a means of treating these wastes. As one means for rendering the waste harmless, solidifying and reducing its volume, there is known a waste melting furnace for melting waste using heat generated by a generally well-known thermite reaction.

(1) For example, Japanese Patent Application Laid-Open No. Hei 9-101014 (hereinafter referred to as "A") discloses that "incinerated ash is mixed with flaked or pulverized aluminum material and metal oxide to form solidified incineration. Burn the ash mixture in a closed state and melt it,
An incineration ash melting furnace which turns into slag "is disclosed. The incineration ash melting furnace disclosed in Japanese Patent Publication No. A will be described below with reference to the drawings. FIG. 21 is a sectional view of a main part of the incineration ash melting furnace disclosed in Japanese Patent Publication No. A. In FIG. 21, reference numeral 80 denotes an incineration ash melting furnace, and 81 denotes an incineration ash melting furnace 80 into which incineration ash, fragmented or pulverized aluminum material and metal oxide are charged, and mixed and stirred by a rotating stirring blade 83 to obtain a mixture (hereinafter, referred to as a mixture). A mixing and stirring unit, which is referred to as “incineration ash mixture”), a feeder 82 disposed below the mixing and stirring unit 81 for transporting the incineration ash mixture in the horizontal direction, and a discharge outlet 84 of the feeder 82 Cylinder 84b and cylinder 84 whose sides are communicated
b, a compression solidification section having a piston 84a driven by an air cylinder 84c, and a side portion 85 communicates with a discharge port of the cylinder 84b of the compression solidification portion 84, and a tip portion 85d is tapered. The formed cylindrical cylinder 8
5c and a piston 85a that slides in the cylinder 85c in the axial direction thereof and is driven by an air cylinder 85b. The solid delivery unit 86 rotates sideways while communicating with the tip 85d of the solid delivery unit 85. A funnel-shaped liner 87 freely disposed is a rotation drive unit 88 that rotationally drives the funnel-shaped liner 86 by a rotating belt 87b that transmits rotational power.
Closes the open end of the funnel-shaped liner 86 and closes the funnel-shaped liner 86
A liner lid 89 for sealing the inside is a slag outlet provided on the liner lid 88 near the opening edge of the funnel-shaped liner 86.

[0004] The operation of the conventional incineration ash melting furnace configured as described above will be described below. First, when the incinerated ash, the fragmented or pulverized aluminum material and the metal oxide are put into the mixing and stirring section 81, these are mixed by the rotation of the stirring blades 83 to form an incinerated ash mixture. The incinerated ash mixture is transported from the feeder 82 and sent into the cylinder 84b of the compression and solidification unit 84. Compression solidification unit 84
, The compressed incinerated ash mixture is compressed and solidified by the piston 84a and sent into the cylinder 85c. The incinerated ash mixture sent to the cylinder 85c is pushed out by the piston 85a toward the tip 85d. Tip 85d
Due to the small diameter, the extruded incinerated ash mixture is further compressed and extruded into the funnel-shaped liner 86 from the tip 85d. The incinerated ash extruded into the funnel-shaped liner 86 is heated to 1100 ° C. or higher by a heating burner (not shown) to cause a thermite reaction. To become molten slag. The molten slag flows down the inner wall of the funnel-shaped liner 86 and is discharged from the slag outlet 89 to the outside of the funnel-shaped liner 86. As a result, the incinerated ash is melted and reduced in volume.

(2) Japanese Patent Application Laid-Open No. 10-47640 (hereinafter referred to as “B”) discloses that “incinerated ash is mixed or blended with aluminum and a metal oxide, and the incinerated ash mixture or incinerated ash compound is prepared. For treating incinerated ash by burning and melting the incineration ash. " Hereinafter, the incineration ash melting furnace disclosed in the Japanese Patent Publication No. B will be described with reference to the drawings. FIG. 22 is a sectional view of a main part of the incineration ash melting furnace disclosed in the gazette of Japanese Patent Publication No. In FIG. 22, 90 is a refractory furnace body, 91 is a preheating chamber for introducing the incineration ash mixture or compound disposed in the refractory furnace body 90, and 92 is a preheating chamber 9
An incineration ash reaction chamber 93 communicating with 1 is provided, a heating chamber 93 is disposed around the preheating chamber 91 and the incineration ash reaction chamber 92 and heats the preheating chamber 91 and the incineration ash reaction chamber 92, and a 94 is disposed in the refractory furnace body 90. A combustion gas exhaust port 95 is provided to communicate with the heating chamber 93 and exhaust the combustion gas in the heating chamber 93. A fire-resistant lid 95 closes an open end of the incineration ash reaction chamber 92. Also, the incineration ash reaction chamber 92
Is provided with a melt discharge port (not shown) at a part thereof.

The operation of the conventional incineration ash melting furnace configured as described above will be described below. First, the preheating chamber 9
After introducing the incinerated ash mixture or compound into 1 and preheating the incinerated ash mixture or compound, the mixture is introduced into the incinerated ash reaction chamber 92, and heated by the heating chamber 93, whereby the incinerated ash mixture or compound is mixed in the incinerated ash reaction chamber 92. A thermite reaction occurs between the aluminum and the metal oxide in the material, and the incinerated ash mixture or compound is burned and melted.

(3) Japanese Unexamined Patent Application Publication No. 10-54539 (hereinafter referred to as C) discloses a "incineration ash processing apparatus provided with an incineration ash melting chamber for burning and melting incineration ash". . Hereinafter, the incineration ash melting furnace disclosed in the publication No. C will be described with reference to the drawings. FIG. 23 is a sectional view of a main part of an incineration ash melting furnace disclosed in Japanese Patent Publication No. C. In FIG. 23, 90 is a refractory furnace body, 91 is a preheating chamber, 92 is an incineration ash reaction chamber, 94 is a combustion gas exhaust port, 95 is a refractory lid,
Since these are the same as those described in FIG. 22, the same reference numerals are given and the description is omitted. The present incineration ash melting furnace is characterized in that a microwave heating device or an induction heating device 96 is provided so as to surround the preheating chamber 91 and the incineration ash reaction chamber 92. Further, a melt discharge port (not shown) is provided in a part of the incineration ash reaction chamber 92.

The operation of the conventional incineration ash melting furnace configured as described above will be described below. First, the preheating chamber 9
After the incineration ash mixture or compound was introduced into 1 and the incineration ash mixture or compound was preheated, the mixture was introduced into the incineration ash reaction chamber 92, and was heated by the microwave heating device or the induction heating device 96, whereby the incineration ash reaction chamber 92 was heated. Causing a thermite reaction between the aluminum and the metal oxide in the incinerated ash mixture or compound at
Burn and melt the incinerated ash mixture or compound.

(4) Japanese Patent Application Laid-Open No. 10-43717 (hereinafter referred to as Japanese Patent Application Laid-Open No. H10-214, 1993) states that "A processing apparatus for ash bodies composed of incinerated ash and / or dust ash includes (i) ash bodies, aluminum A raw material mixer for mixing a raw material composed of a powder, a metal oxide powder, and a flammable medium; (ii) kneading the mixed raw material and cantilevering a solid and rod-shaped fuel rod from a tip end A combustion furnace for extruding a fuel rod in a state, (iii) a combustion furnace disposed adjacent to the fuel rod production machine and having an ignition device for igniting an end of the fuel rod;
v) An apparatus for treating ash, comprising: a melt receiver for receiving a ash melt discharged from the combustion furnace.

[0010]

However, the above-mentioned conventional waste melting furnace has the following problems. (1) Thermit reaction is caused while the mixture of thermit agent and waste (in the above-mentioned prior art, "incinerated ash") is introduced into the furnace, so that thermit reaction reacts violently and sparks are generated. There is a possibility that the thermite reaction may spread to the upstream due to the spark, and the safety is low. (2) The components of the waste vary greatly, and it is extremely difficult to determine the mixing ratio of the thermite agent, and there is a problem that the temperature of the thermite reaction cannot be controlled in practice. (3) In order to completely melt the ash, it is necessary to increase the mixing ratio of the thermite agent, and there is a problem that the melting temperature becomes extremely high and the refractory wall of the furnace is deteriorated. . (4) The waste to be introduced varies in particle size, specific gravity, angle of repose, etc., and it is practically difficult to mix the molten thermite agent at all times in a uniform manner. When performing continuous melting, it is necessary to heat from the outside with a heating device such as a burner.The entire furnace is heated, the heat efficiency is low, the fire wall of the furnace is quickly deteriorated, and the running cost is high. At the same time, it has a problem of lack of durability. (5) When the mixing ratio of the thermite agent is not uniform for the reason described in the above (4), the temperature does not rise to the melting temperature of the waste, and the unmelted waste is discharged together with the waste. Had. (6) There is a problem that aluminum pieces are repelled in the thermite reaction, and aluminum does not sufficiently react.

The present invention solves the above-mentioned conventional problems. The thermite reaction does not spread to the upstream part, the temperature of the thermit reaction can be easily controlled, and the furnace temperature can be reduced. It can stably maintain the thermite reaction, has high thermal efficiency, low running cost, has excellent durability, and completely melts waste and does not discharge waste with accompanying waste Furnace, and complete melting and detoxification of wastes using the furnaces. At the same time, deodorization and detoxification of odorous components and dioxins in waste gas. The purpose is to provide.

[0012]

In order to solve the above-mentioned problems, a waste melting furnace according to the present invention comprises a furnace chamber formed inside a furnace body, a melting section disposed inside the furnace chamber, and a melting section. A waste supply unit that supplies granular waste to the furnace, a thermite agent supply unit that supplies a granular thermite agent to the melting unit, and a molten slag discharge that is provided downstream of the melting unit inside the furnace chamber. And a part having the same. With this configuration, the thermit reaction does not spread to the upstream part, the temperature control of the thermit reaction is easy, the furnace temperature can be lowered, the durability is excellent, the thermal efficiency is high, and the running cost is low. A low waste melting furnace can be provided.

According to another aspect of the present invention, there is provided a waste melting apparatus comprising: a waste melting furnace according to any one of claims 1 to 5; One or more waste input pipes for inputting waste into the material supply unit,
A waste storage unit for storing waste, and a waste transport feeder that communicates the waste with the waste storage unit and the waste input pipe, and a thermite agent supply unit is disposed above the melting unit. A thermite agent supply pipe, a thermite agent reservoir communicating with the upper end of the thermite agent supply tube, and a thermite agent feeder for adjusting the flow rate of the thermite agent to be injected from the thermite agent reservoir into the thermite agent inlet tube. Consists of a configuration. With this configuration, the thermit reaction does not spread to the upstream part, the temperature control of the thermit reaction is easy, the melting temperature can be lowered, the thermal efficiency is high, the running cost is low, and the durability is excellent. Waste melting device can be provided.

[0014]

In order to achieve this object, a waste melting furnace according to claim 1 of the present invention has a furnace chamber formed inside a furnace body and a melting chamber disposed inside the furnace chamber. Unit, a waste supply unit that supplies granular waste to the melting unit, a thermite agent supply unit that supplies a granular thermite agent to the melting unit, and a downstream unit that is located downstream of the melting unit inside the furnace chamber. And a melted slag discharge section formed by the above method. According to this structure, 1) a thermite agent causes a thermite reaction in the melted section, and the generated heat melts the waste into molten slag. 2) The molten slag flows down to the molten slag discharge section and is discharged outside the furnace. 3) In the melting section, the thermite reaction continues in a chain due to the heat generated by the reaction. 4) By controlling the supply amount of the thermite agent, the amount of heat generated by the thermit reaction can be controlled, and the temperature of the melting part can be adjusted. Is obtained.

Here, the thermite agent is a mixture of aluminum and a metal oxide. However, a mixture of aluminum and iron oxide or copper oxide, or a mixture of these with a binder such as slaked lime to form a thermite compound. What has been used is preferably used. As aluminum, not only high-purity aluminum, but also aluminum slag generated in a large amount in the step of re-dissolving aluminum in an aluminum manufacturing plant, aluminum cans for canned beverages, and the like can be used. High-purity iron oxide (Fe ₂ O ₃ , Fe ₃ O _4, etc.) as iron oxide or copper oxide
Not only steel and copper oxide, but also in steel mills and steel mills, a large amount of iron scale and copper in copper mills is generated when casting molten steel continuously, drawing it out, and cooling or rolling or forging ingots and billets. Pieces or copper scales can also be used. The thermite has an average particle size of 0.0004 mm to 5 mm, preferably 0.004 mm to 2 mm. As the average particle size exceeds 2 mm, only the aluminum particles are repelled during the reaction, so that the reactivity of the thermite reaction tends to deteriorate. As the particle size becomes smaller than 0.004 mm, moisture is absorbed and ignitability and reactivity are reduced. It is not preferable because an inferior tendency is observed. The waste is not limited to incinerated ash remaining after incineration of garbage, but it is also possible to use dried tofu produced during the production of tofu, crushed green tape that is waste containing hexavalent chromium, asbestos, Alternatively, it may be waste such as dried sewage sludge. As for the refuse, powdery substances such as ash are charged as they are from the beginning.
It is preferable to grind to a size of 50 mm to 50 mm, preferably 0.01 mm to 8 mm. This is because melting becomes difficult as the particle size exceeds 8 mm, and handling becomes difficult as the particle size becomes smaller than 0.01 mm. Further, it is preferable that the waste is dried before being put into the furnace. By keeping the waste dry, heat is prevented from dissipating as heat of evaporation, increasing the thermal efficiency, reducing the angle of repose of the waste powder, and improving the fluidity of the waste powder. Because you do. In addition, -3 to-
It is preferable to perform suction and exhaust at 10 Pa, preferably about -5 to -10 Pa. As a result, the gas generated during the melting of the waste can be recovered from the molten slag discharge part without leaking out of the furnace, and the air heated by the heat generated by the thermite reaction stays in the furnace chamber. This is because the temperature of the furnace chamber can be kept low and deterioration of the furnace body due to heat can be prevented.

A waste melting furnace according to a second aspect of the present invention is the waste melting furnace according to the first aspect, wherein the waste slag is disposed between the melting portion and the molten slag discharge portion to temporarily block the molten slag. In this case, the molten slag flowing from the molten portion to the molten slag discharge portion is provided by a dam. The slag is temporarily stopped at the section to form a molten slag pool, overflows from the weir section, and flows down to the molten slag discharge section. 2) In the molten slag pool, heat is stored as molten slag. 3) Unmelted waste is completely melted in the molten slag pool. 4) Even if the amount of the thermite agent is reduced or the thermite agent is intermittently injected, the thermite reaction can be continued because the heat is stored in the molten slag pool, and the delicate melting portion Temperature control is possible,
It is possible to lower the temperature of the melting part, and prevent deterioration of the furnace wall. Is obtained.

Here, as the weir portion, an overflow weir for overflowing the molten slag from the upper end or an outflow weir having a molten slag outlet formed in the middle of the weir is used. Used for This is because the molten slag does not solidify to become a clinker and adhere to the weir and clog.

A waste melting furnace according to a third aspect of the present invention is the waste melting furnace according to the first or second aspect, which is formed or arranged on the upstream side, the downstream side, or the side of the melting portion of the furnace chamber. A waste supply part, and a molten slag discharge part formed in an opening shape on a floor part on the downstream side of the melting part of the furnace chamber, and
A waste supply unit formed by a supply pipe or a central supply unit having a floor connected to the melting unit and communicating with the melting unit, and a central supply unit of the furnace chamber and / or on both sides of the melting unit. A pair of side supply chambers, each of which is provided with a floor portion inclined downward toward the furnace chamber and connected to the furnace chamber, is disposed on a ceiling portion of the furnace chamber, and separates the furnace chamber from the side supply chamber. A pair of partition walls, a pair of supply passages formed in a gap shape at the lower end of the partition wall and communicating the side supply chamber and the central supply section, and an open end which is inserted through the ceiling of the central supply section and is disposed. A central supply pipe extending to a central supply section of the furnace chamber; and a thermite agent supply section disposed above the melting section.
Or 1) The waste put into the furnace is once transported and stored from the central supply pipe to the central supply section and to the side supply chamber. 2) In the central supply part, a mountain of powdery waste having an inclined surface toward the melting part is formed. 3) The bottom of the pile of the particulate waste is related to the melting portion, and is gradually melted as the thermite reaction progresses to become molten slag and flows out from the discharge portion. 4) The particulate waste is sequentially supplied to the mountain of particulate waste from the side supply chamber through the central supply pipe and through the supply passage. 5) The particulate waste supplied to the side supply chamber is temporarily stored in the side supply chamber to form a waste pool, and the waste is stored in the central portion through the supply passage from the lower portion of the powdery waste pool. Since the waste material flows slowly into the supply part and forms a mountain of waste, it is prevented from scattering into the air in the furnace chamber. 6) Since the open end of the central supply pipe extends to the vicinity of the floor of the central supply part, the open end is buried in the pile of the particulate waste, so that the particulate waste is in the center. Once dropped from the top of the supply pipe, it is temporarily stored near the open end of the central supply pipe,
Thereafter, since the waste slowly flows into the furnace chamber and is supplied to the pile of the granular waste, it is prevented from scattering into the air in the furnace chamber. 7) The waste flows and is continuously supplied to the melting section while the slope of the mountain of the granular waste collapses. Is obtained.

Here, the furnace chamber has a lower section formed in an inverted triangular or polygonal shape centered on the floor, a circular arc or a groove having a long axis side ellipse. The waste supply unit includes a waste supply port formed in the furnace room ceiling or side wall, a waste supply pipe extending from the furnace room ceiling or side wall into the furnace room, and a furnace room. For example, a waste supply unit that supplies fluid from a gap below a partition wall that separates a side supply chamber disposed on a side from the supply unit is used. The position of the waste supply unit is disposed on the upstream side, downstream side, or side of the melting unit. In addition, if the central supply pipe is formed large or the waste to be charged is sufficiently dried in advance, the side supply chamber may not be provided.

The waste melting furnace according to a fourth aspect of the present invention is the waste melting furnace according to the third aspect, wherein the dividing wall can be freely moved up and down at the ceiling of the furnace chamber so as to expand and contract the gap in the supply passage. And / or the partition wall is provided with a notch at the lower end on the upstream side of the melting portion. With this configuration, in addition to the function of claim 3, a. The partition wall is vertically arranged on the ceiling of the furnace chamber so that the gap between the supply passages can be enlarged and reduced, so that the width of the gap between the supply passages can be adjusted according to the type of waste (bulk density, angle of repose). Can be adjusted. b. The partition wall is provided with a cutout at the lower end on the upstream side of the melting section, so that the ash is smoothly supplied from the side supply chamber to the central supply section. Is obtained.

A waste melting furnace according to a fifth aspect of the present invention is the waste melting furnace according to any one of the first to fourth aspects, wherein the furnace body is formed so that the downstream side is lower,
Or, the inclination angle is freely locked to the furnace base, and / or
Alternatively, a cooling unit that cools the outside of the furnace wall from the side part to the floor part forming the furnace chamber outer shell is provided, and / or the molten slag discharge part has an opening edge formed in an eaves shape on the furnace chamber upstream side. According to this configuration, in addition to the functions described in any one of claims 1 to 4, a. Since the furnace body is tilted low toward the molten slag discharge part by being fixed to the furnace base so that the inclination angle is variable so that the downstream side of the furnace body is lowered, waste melted in the melting part Is smoothly discharged from the molten slag discharge section. b. The provision of a cooling unit for cooling the outer side of the furnace wall or the outside of the floor that forms the furnace chamber outer shell 1) cools the furnace wall from the outside, prevents the temperature of the furnace wall from rising, and reduces the deterioration of the furnace wall. Is prevented. 2) Since a temperature difference occurs between the molten slag flowing through the hearth and the furnace wall (the inside of the furnace wall), clinker adheres to the inside of the furnace wall and the molten slag flows over the furnace wall. It has a function and can protect the furnace wall. Also,
Since the clinker is condensed, the clinker is easily peeled off, and the workability in furnace maintenance such as cleaning of the furnace chamber is improved. c. Since the molten slag discharge section has an opening edge formed in an eaves shape on the upstream side of the furnace chamber, the clinker is prevented from adhering to a lower portion from the discharge port of the molten slag discharge section.
Is obtained.

Here, a gaseous medium such as air or a liquid medium such as water is used as a cooling medium of the cooling unit. When a liquid medium is used, it is necessary to take measures to prevent leakage of the pipes and vaporization. Therefore, it is preferable to perform cooling using a gaseous medium.

According to a sixth aspect of the present invention, there is provided a waste melting apparatus, comprising: a waste melting furnace according to any one of the first to fifth aspects; One or more waste input pipes for inputting waste to the supply section, a waste storage section for storing waste, and a waste transport for communicating waste with the waste storage section and the waste input pipe. A feeder, a thermit agent supply section, a thermit agent supply pipe disposed above the melting section, a thermit agent storage section disposed above the thermit agent supply pipe, and a thermit agent supply from the thermit agent storage section. A thermit agent feeder for adjusting the flow rate of the thermite agent to be fed into the pipe is provided. With this configuration, 1) the thermite agent causes a thermite reaction in the melting section, and waste heat is generated by the generated heat. Molten slag Becomes 2) The molten slag flows down to the molten slag discharge section and is discharged outside the furnace. 3) In the melting section, the thermite reaction continues in a chain due to the heat generated by the reaction. 4) The feed amount of the thermite agent to the melting part is adjusted by adjusting the thermite agent feeding feeder, and the melting temperature of the melting part is adjusted. 5) The melting temperature of the melting part can be kept substantially constant by introducing the thermite into the melting part at a predetermined speed adjusted according to the melting state by the thermite feeding feeder. 6) The waste is automatically supplied to the waste supply unit through the waste input pipe by the waste transport feeder. Is obtained.

Here, the thermite agent feeder has:
A rotary feeder, a roll feeder, a table feeder, a step disk feeder, a screw feeder, a vibratory discharger, and the like are used, and a rotary feeder is particularly preferably used. The rotary feeder is capable of accurately adjusting the charging speed, and the inlet and outlet are always isolated by blades, so that the thermit reaction may spread upward from the thermite injection tube. This is also because the rotary feeder can prevent fire from spreading to the thermite agent storage section. In addition, as the waste transport feeder, a single-screw screw feeder, a twin-screw screw feeder, a vibrating screw feeder, a belt feeder, a bucket elevator, or the like is used. In particular, a twin-screw screw feeder is suitably used. This is because the twin-screw screw feeder has a high carrying capacity and can pulverize even if the granular waste is agglomerated.

A waste melting apparatus according to a seventh aspect of the present invention is the waste melting apparatus according to the sixth aspect, wherein the waste melting apparatus communicates with the waste input pipe and the waste supply section and supplies the waste to the waste input pipe. Waste pusher that pushes waste waste to the waste supply unit. With this configuration,
In addition to the function according to claim 6, since the waste is pushed from the waste input pipe to the waste supply unit, even if the average particle size of the waste or the angle of repose of the waste is large, the waste is discarded. The effect is obtained that the waste can be smoothly supplied to the material supply section.

[0026] The waste melting apparatus according to claim 8 of the present invention is the waste melting apparatus according to claim 6 or 7,
A thermite agent temporary storage unit disposed at the inlet of the thermite agent input feeder, and a thermite agent input pusher that pushes the thermite agent from the thermite agent storage unit to the thermite agent temporary storage unit, According to this configuration, in addition to the function according to claim 6 or 7, the thermite agent is supplied from the thermite agent storage section to the thermite agent temporary storage section little by little by the thermite agent input pusher. The effect is obtained that the discharge port of the storage section is prevented from being clogged.

According to a ninth aspect of the present invention, there is provided a waste melting apparatus according to any one of the sixth to eighth aspects, wherein the waste melting apparatus is disposed at an upper end of a waste introduction pipe. A level sensor disposed on the input pipe for detecting the level of waste, and a transport control unit for stopping transport of the waste transport feeder when the level sensor detects that the waste input pipe is filled with waste. According to this configuration, in addition to the operation according to any one of claims 6 to 8, when the waste is filled up to the upper end of the waste input pipe, the transport of the waste transport feeder is performed. Is automatically stopped.

A waste melting apparatus according to a tenth aspect of the present invention is the waste melting apparatus according to any one of the sixth to ninth aspects, wherein the waste charging apparatus is disposed in a waste charging pipe. 10. The device according to claim 6, further comprising a vibrator for vibrating the pipe and / or a damper for opening and closing the thermite injection pipe. And a. Equipped with a vibrator arranged on the waste input pipe to vibrate the waste input pipe, waste can flow down the waste input pipe smoothly, and continuous operation can be performed, improving operability and workability. Let it. b. By providing a damper that opens and closes the thermite injection pipe, the damper is closed when the operation of the waste melting furnace is stopped,
It is possible to prevent the moisture in the furnace chamber from rising to the thermite agent storage part, and the operation can be easily restarted next time. Is obtained.

A waste melting apparatus according to claim 11 of the present invention comprises a waste melting furnace according to any one of claims 1 to 5 and a waste melting furnace connected to a lower part of the waste melting furnace. A secondary combustion furnace, a secondary combustion chamber formed in the furnace, a slag input port formed in the ceiling of the secondary combustion chamber and communicating with the molten slag discharge section, and a secondary combustion furnace. A slag discharge port formed just below the slag input port of the secondary combustion chamber, an exhaust port formed in the side wall of the secondary combustion chamber, and a slag discharge port formed in a position facing the exhaust port of the side wall of the secondary combustion chamber. With this configuration, waste gas generated when the waste is melted is burned in the secondary combustion chamber to completely burn dioxin and the like in the smoke and unpleasantly. The effect is obtained that the odor and the like can be completely burned and the waste gas can be cleaned.

A waste melting apparatus according to a twelfth aspect of the present invention is the waste melting apparatus according to the eleventh aspect, wherein the ash of the exhaust gas from the secondary combustion chamber communicates with an exhaust port of the secondary combustion chamber. An ash removing device for removing, a heat exchanger for cooling the exhaust gas passing through the ash removing device, and a dust removing device for removing dust from the exhaust gas passing through the heat exchanger. Accordingly, in addition to the function of claim 11, 1) ash scattered in waste gas discharged from the secondary combustion chamber is substantially removed in the ash removing device. 2) The low melting point substances contained in the waste gas are cooled and removed in the heat exchanger. 3) Dust contained in the waste gas that has passed through the heat exchanger is removed by the dust removal device. Is obtained.

Here, the ash removing device includes an ash duct,
A single cyclone, a multi cyclone, or the like is used. As the dust removing device, an electric dust collecting device, a bag filter, a ceramic filter, or the like is used.

An embodiment of the present invention will be described below. Embodiment 1 First, the configuration of a waste melting furnace according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a waste melting furnace according to Embodiment 1 of the present invention, and FIG. 2 is a front view of the waste melting furnace according to Embodiment 1. 1 and 2, reference numeral 1 denotes a waste melting furnace according to the first embodiment, 2 denotes a furnace body of a waste melting furnace 1 made of a refractory material such as silicon carbide, and 2a denotes an upper surface of the furnace body 2. It is a furnace body ceiling having a rectangular opening at the center. The outer bottom of the furnace body 2 has a trapezoidal groove shape having a hypotenuse that is inclined downward from the side to the bottom. Reference numeral 3 denotes a canopy portion which is fitted to the rectangular opening of the furnace body ceiling portion 2a so as to be vertically movable, and 3a denotes a holding portion fixedly provided on the upper surface of the canopy portion 3.
Reference numeral 4 denotes a pressure-releasing lid that is openably and closably fitted to a pressure-releasing port 40 (see FIG. 4) formed in the upper surface of the canopy portion 3. Pressure relief lid 4
Usually, the pressure relief port 40 is closed by its own weight, but when a large pressure is applied from the inside of the furnace body 2, the pressure relief port 40 rises to open the pressure relief port 40, thereby preventing the furnace body 2 from bursting. Reference numeral 5 denotes a work cover, which is disposed at the front of the furnace body 2 by a hinge 5c so as to be openable and closable for performing ignition work in the furnace and maintenance / cleaning work in the furnace, and 5a denotes a work cover when the work cover 5 is closed. The work lid locking portion 5b for locking the work 5 in a sealed state is formed in a circular shape at the center of the work lid 5 so that an operator can observe the state inside the furnace, and is made of heat-resistant glass. It is a peephole closed openably and closably by. Reference numeral 6 denotes a cooling unit provided around the outer wall of the furnace body 2 from the bottom surface to the lower part of both sides of the furnace body 2, 6 a denotes a cooling unit blower for blowing cooling air into the cooling unit 6, and 6 b denotes a furnace body 2. This is a cooling unit exhaust port for discharging cooling air heated by cooling the cooling unit. An air passage is provided inside the cooling unit 6 so that air circulates through the cooling unit 6. The air is circulated from the cooling unit air inlet 6 a to the cooling unit exhaust port 6 b, so that the furnace body 2 is cooled. Cool outer walls. 7 is a furnace body 2
Reference numeral 8 denotes a gas burner provided on the side of the injection port of the oil burner 7. The oil burner 7 dries the furnace and burns the waste gas in the furnace, and the gas burner 8 ignites the oil burner 7 and stabilizes the flame of the oil burner 7. Reference numeral 9 denotes a central waste input pipe which is inserted through the rear central portion of the upper surface of the canopy 3 and 10
Reference numeral 11 denotes a side waste input pipe which is inserted through the rear side of the furnace body ceiling portion 2a and 11 denotes a central waste input pipe 9 of the canopy portion 3.
Is a thermite injection tube that is inserted through the center of the upper surface in front of. The powdery and granular waste is stored in the central waste input pipe 9
Then, the particulate waste is dropped into the furnace from the side waste introduction pipe 10, and the granular thermite is dropped into the furnace from the thermite injection pipe 11. Reference numeral 12 denotes a molten slag discharge port formed in a rectangular shape on the front lower surface of the furnace body 2, and 13 denotes a molten slag discharge port 1.
2 is a vertical tubular molten slag discharge pipe communicating with 2. The molten slag in which the waste and the thermite are melt-mixed is dropped and discharged from the molten slag discharge port 12 to the molten slag discharge pipe 13. Reference numeral 14 denotes a front side support body which is fixed to both front sides of the furnace body 2 and has a lower part protruding below the furnace body 2. A plurality of inclined angle forming holes drilled in the protruding portion, 15
Is a rear side support member fixed to both rear side portions of the furnace body 2 and has a lower end protruding below the furnace body 2; 16 is a support for the front and rear lower portions of the furnace body 2; It is a lower support which is a beam material horizontally extended between both rear side supports 15. The furnace body 2 is supported on both front sides by a front side support 14, is supported on both rear sides by a rear side support 15, and is supported on the front and rear lower parts by a lower support 16. 17 is a stand for holding the waste melting furnace 1;
Is a vertically mounted front gantry supporting member constituting the front both side frames of the gantry 17, 19 is a vertically erected rear gantry supporting member constituting the rear both side frames of the gantry 17, and 19a is both rear gantry. A rear beam member 20 horizontally provided at the upper end of the support member 19 is formed in a rectangular frame shape provided in a horizontal beam shape near an upper end portion of the front gantry support member 18 and a central portion of the rear gantry support member 19. The frame side frame member, 21 is a furnace body holding member disposed at the upper end of both front frame support members 18, 21a is a hole which is a circular hole formed on the side of the furnace body holding member 21, 22 (Refer to FIG. 2) is the inclined angle forming hole 14a and the hole 2
A holding member formed of a rod-like member such as a bolt inserted into 1a and locking the front side support body 14 to the furnace body holding member 21;
Reference numeral 23 denotes a rotation support member disposed on the upper ends of both rear gantry support members 19 and rotatably supporting the lower end of the rear side support 15. The rear gantry support member 19 is the front gantry support member 1
8, the furnace body 2 is rotatably locked to the gantry 17 so as to be inclined downward toward the front side.

FIG. 3A is a plan view of the waste melting furnace according to the first embodiment, and FIG. 3B is a sectional view taken along the line AA of FIG. In FIG. 3, 1 is a waste melting furnace, 2 is a furnace body, 2a is a furnace body ceiling part, 3 is a canopy part, 3a is a lifting part,
4 is a pressure release lid, 9 is a central waste input pipe, 10 is a side waste input pipe, 11 is a thermite agent input pipe, and 12 is a molten slag discharge port, which are the same as those in FIGS. Therefore, the same reference numerals are given and the description is omitted. Reference numeral 30 denotes a furnace chamber formed in the furnace body 2 and having an opening at an upper portion, and 30a denotes a furnace chamber 30.
Is a fire floor with a flat floor. The furnace chamber 30 is formed in a trapezoidal groove shape having a hypotenuse that is inclined downward from both sides of the grate 30a toward the center, and the canopy part 3 is tightly fitted and closed in the upper opening. Reference numeral 31 denotes a melting unit located near the center of the furnace room 30 floor, 32 denotes a central supply unit of waste located upstream of the melting unit 31 in the furnace chamber 30, and 33 denotes a downstream of the melting unit 31 in the furnace chamber 30. It is a molten slag discharge part located on the side. A rectangular molten slag discharge port 12 is opened in the grate 30 a of the molten slag discharge section 33, and the granular waste is charged into the central supply section 32 of the furnace chamber 30. The molten slag is melted, and the molten slag is discharged out of the furnace chamber 30 from the molten slag discharge port 12 of the molten slag discharge section 33. Reference numeral 34 denotes an overflow weir disposed on the floor of the furnace chamber 30 between the melting unit 31 and the molten slag discharge unit 33 in a weir shape, and 34a is formed in a semicircular shape on the upper end surface of the overflow weir 34. This is the cut-out part. The overflow weir 34 temporarily interrupts the molten slag flowing down from the melting part 31 toward the molten slag discharge port 12, and a cutout 34 a at the upper end thereof.
Overflow molten slag from 35 is a side supply chamber formed on both sides of the central supply part 32 to the melting part 31 of the furnace chamber 30 and having a floor surface inclined downward toward the furnace chamber 30 and supplying waste to the central supply part 32; Reference numeral 36 denotes a partition wall disposed on the lower surface on both sides of the top plate of the canopy portion 3 formed in an inverted U shape and separates the furnace chamber 30 and the side supply chamber 35 from each other.
A cutout portion (see FIG. 4) formed in a rectangular shape at the lower end side of the upstream partition wall 36. The floor of the side supply chamber 35 and the floor of the furnace chamber 30 are connected by a smooth plane. Partition wall 3
The lower end of 6 is formed to be inclined in parallel with the floor surfaces of the side supply chamber 35 and the furnace chamber 30.

FIG. 4 is a sectional view taken on line BB of FIG. In FIG. 4, 1 is a waste melting furnace, 2 is a furnace body, 2a is a furnace body ceiling part, 3 is a canopy part, 3a is a lifting part, 4 is a pressure relief lid, 5 is a work lid, 5b is a peephole, 6 Is a cooling unit, 6a is a cooling unit air outlet, 7 is an oil burner, 8 is a gas burner, 9 is a central waste input pipe, 10 is a side waste input pipe, 11 is a thermite agent input pipe, and 12 is a molten slag discharge port. , 16 is a lower support, 30 is a furnace chamber, 30a is a grate, 31 is a melting part, 32
Is a central supply section, 33 is a molten slag discharge section, 34 is an overflow weir section, 34a is a cutout section, and 36 is a partition wall. These are the same as those in FIGS. The description is omitted. Reference numeral 9a denotes a central supply pipe which communicates with the central waste introduction pipe 9 and is inserted into the canopy section 3 and whose lower end extends to a central supply section 32 in the furnace chamber 30. Central supply pipe 9a
Is bent toward the melting portion 31, and the front end thereof is open toward the melting portion 31. Reference numeral 12a denotes a molten slag guide formed in an eave shape at the opening edge of the molten slag discharge port 12 inside the furnace chamber 30. The molten slag is discharged from the furnace chamber 30 while dripping from the eaves-shaped molten slag guide portion 12a. 36a is the partition wall 3 already described in FIG.
6, a partition wall 3 upstream of the melting portion 31
The lower end 6 is formed in a rectangular shape at a height of about half the height of the partition wall 36. Reference numeral 40 denotes a pressure relief port formed in a circular shape at the center of the canopy part 3 above the overflow weir 34 and closed by the pressure relief lid 4. Reference numeral 41 denotes a rectangular hole formed in the front side wall of the furnace chamber 30 for work. A working port 42 closed by the lid 5 is a burner port circularly formed near the center of the rear side wall of the furnace chamber 30 in communication with the port of the oil burner 7. The central axis of the burner injection port 42 is the molten slag guide 1 of the molten slag discharge port 12.
The oil burner 7 is also formed so as to be inclined toward the molten slag guide 12 a of the molten slag discharge port 12.

FIG. 5 is a sectional view taken along line CC of FIG. 4, FIG. 6 is a sectional view taken along line DD of FIG. 4, and FIG. 7 is a sectional view taken along line EE of FIG. It is arrow sectional drawing. 5 to 7, 1 is a waste melting furnace, 2 is a furnace body, 2a is a furnace body ceiling portion,
3 is a canopy part, 3a is a lifting part, 4 is a pressure relief lid, 6 is a cooling part,
6a is a cooling unit air outlet, 6b is a cooling unit exhaust port, 7 is an oil burner, 8 is a gas burner, 10 is a side waste inlet pipe, 3
0 is a furnace room, 30a is a grate, 34 is an overflow weir, 34a is a notch, 36 is a partition wall, 36a is a notch, 40
Denotes pressure relief ports, which are the same as those in FIGS. 1 to 4 and are denoted by the same reference numerals and description thereof is omitted. 45 is the furnace room 30
It is a waste supply passage formed by a gap formed below the lower end of the partition wall 36 between the partition wall 36 and the side supply chamber 35. The side supply chamber 35 extends over the entire lower part of the furnace chamber 30 and the supply passage 45.
The gap between the partition wall 36 and the floor of the furnace chamber 30 and the side supply chamber 35 is widened at the notch 36a. Since the canopy 3 is vertically slidably fitted in the opening of the furnace body ceiling 2a, it is possible to adjust the width of the gap of the supply passage 45 by lifting the lifting part 3a. During the maintenance work on the room 30, the canopy 3
Can be removed from the furnace body 2. Overflow weir 34
A semicircular notch 34a is formed at the center of the upper end of the slag, and the molten slag overflows from the notch 34a.

FIG. 8 is a schematic diagram around the melting part of the waste melting furnace in the first embodiment. In FIG. 8, 9a is a central supply pipe, 11 is a thermite injection pipe, 31 is a melting section,
32 is a central supply section on the upstream side of the melting section 31;
1, a molten slag discharge portion on the downstream side, 34 is an overflow weir portion, 12 is a molten slag discharge port, and 12a is a molten slag guide portion of the molten slag discharge port 12. H is a pile of waste formed in the central supply section 32, and P is a molten section 31 from the overflow weir 34 upstream side.
This is a molten slag pool formed over a period of time.

The operation of the waste melting furnace according to the first embodiment configured as described above will be described below.
The waste crushed into the granular form is supplied from the central waste input pipe 9 to the central supply section 32 through the central supply pipe 9a,
It is dropped and supplied to the side supply chamber 35 through the side waste supply pipe 10. At this time, the granular waste is supplied to the central supply unit 3.
2 and in the side supply chamber 35. A mountain of waste H is formed from the central supply section 32 to the melting section 31, the open end of the central supply pipe 9a is buried in the mountain of waste H, and the waste is accumulated inside the central supply pipe 9a. Side supply chamber 35
, A waste reservoir Q is formed, and the supply passage 45 is closed by the waste. The waste in the waste reservoir Q is slowly flowed into the furnace chamber 30 through the supply passage 45.
At the notch portion 36a of the partition wall 36, the waste flows out of the waste pool Q to the central supply portion 32 through the notch portion 36a. Form a steep slope toward. Since the open end of the central supply pipe 9a is closed by the waste mountain H, even if the waste is dropped and supplied, it is prevented from scattering into the space inside the furnace chamber 30. Further, since the space in the furnace chamber 30 and the space in the side supply chamber 35 are isolated except for the cut-out portion 36a, the waste dropped and supplied to the side supply chamber 35 is removed in the furnace chamber 30. Is prevented from scattering into the space. When the waste supplied to the furnace chamber 30 contains moisture, the oil burner 7 is ignited and the waste is calcined to be dried. This is not necessary if the waste is already dry. At this time, suction and exhaust are performed from the molten slag discharge port 12. As a result, the molten slag discharge port 1 does not leak waste gas containing unburned components and toxic compounds (such as dioxin) generated from the waste to the outside of the furnace.
2 can be recovered. When the waste is sufficiently dried, the oil burner 7 is stopped, and the thermite is supplied from the thermite supply pipe 11 to the melting section 31. The charged thermite agent is ignited by an ignition rod from the working port 41 to cause a thermite reaction. When the thermite reaction starts in the melting section 31, the granular thermite is dropped and supplied to the melting section 31 sequentially from the thermite injection pipe 11. Thereby, the thermite reaction is sustained in a chain by the heat of the reaction, and the waste can be continuously melted. The melting temperature in the melting section 31 can be adjusted by adjusting the rate of feeding of the thermite agent and adjusting the amount of the thermite reaction. In addition, since the thermite agent is sequentially dropped and supplied from the upper part of the furnace chamber 30, there is no danger that the thermite reaction will spread upward. As described above, since no external heating is required in melting the waste, the running cost and energy in the operation of the melting furnace can be significantly reduced. In addition, since no external heating is performed, the furnace body 2
Is not heated as a whole, the furnace body 2 has a relatively low temperature, and the furnace body 2 itself is less deteriorated by heat and has a long life.
Furthermore, since the range in which the temperature is raised is limited to a narrow region of the melting portion 31, the heat radiation area is small and the thermal efficiency is high. The particulate waste accumulated in the melting section 31 is melted by the reaction heat generated by the thermite reaction to become a molten slag. At this time,
When toxic waste gas is generated when the waste is melted, it is possible to ignite the oil burner 7 and burn the waste gas in the furnace chamber 30.
It is also possible to collect by sucking and exhausting from. By sucking and exhausting from the molten slag discharge port 12, waste gas is recovered, and air heated by reaction heat is also discharged to the outside of the furnace, thereby suppressing an increase in furnace temperature. Grate 30
Since a is inclined downward from the rear of the furnace chamber 30 toward the front, the molten slag flows down from the melting portion 31 toward the molten slag discharge port 12. At this time, the molten slag is temporarily stopped in the overflow weir 34, and a molten slag pool P is formed from the upstream side of the overflow weir 34 to the melting portion 31. Thereby, heat is stored as molten slag in the molten slag pool P. Due to the stored heat, the unmelted waste is completely melted in the molten slag pool P. Further, since the heat is stored in the molten portion 31 as the molten slag pool P, the thermite reaction can be maintained even if the thermite agent is intermittently supplied, and the temperature range of the adjustable melt portion 31 can be expanded. Also, fine temperature control is possible. Furthermore, since the unreacted thermite agent also reacts in the molten slag pool P, the reaction efficiency of the thermite agent is also improved. When the molten slag pool P is filled up to the notch 34a of the overflow weir 34, the molten slag overflows from the notch 34a and flows down to the molten slag discharge port 12. The molten slag flowing down to the molten slag discharge port 12 is dropped from the molten slag guide portion 12 a and discharged out of the furnace without traveling along the side wall of the molten slag discharge port 12. Therefore, the clinker is prevented from adhering to the side wall of the molten slag discharge port 12. In the entire process, the furnace wall of the furnace body 2 is cooled from the outside of the wall by the air circulated to the cooling unit 6. As a result, a slag layer cooled by the furnace wall is formed on the floor surface of the furnace chamber 30, and the high-temperature molten slag flows on the slag layer, thereby preventing the hearth from melting or deteriorating due to heat. Is done. Also,
Since a temperature difference occurs between the molten slag and the hearth, the clinker is prevented from welding to the hearth, the clinker is easily peeled off, damage to the furnace material is prevented, and maintenance is facilitated. Since the waste mountain H forms a slope from the central supply section 32 to the melting section 31, the melting section 3
When the waste of No. 1 turns into a molten slag and flows out of the melting part 31, the mountain H of the waste collapses and the waste is automatically supplied.
In addition, the waste H is sequentially supplied with the flow of waste from the central supply pipe 9a and the side supply pipe 35 to the waste H by its own weight. The inclination angle of the furnace body 2 is variably fixed to the gantry 17 so that the inclination angle of the furnace body 2 can be adjusted according to the repose angle of the waste. Since the side supply chamber 35 is heated from the inside of the furnace chamber 30 through the partition wall 36, the waste accumulated in the side supply chamber 35 is dried while being accumulated, and dried from the side supply chamber 35. Waste can be supplied. Similarly, the waste mountain H is also dried by the heat of the melting unit 31.

As described above, according to the present embodiment, the following operations are provided. 1) The waste put into the furnace is once transported and stored from the central supply pipe 9a to the central supply section 32 and from the side waste input pipe 10 to the side supply chamber 35. 2) The width of the gap of the supply passage 45 can be adjusted according to the type of waste (bulk density, angle of repose). 3) A mountain H of waste having an inclined surface toward the melting portion 31 is formed in the central supply portion 32. 4) The waste pile H is sequentially supplied with waste from the side supply chamber 35 through the central supply pipe 9a and through the supply passage 45. 5) The granular waste supplied to the side supply chamber 35 is:
Once stored in the side supply chamber 35 to form a waste reservoir Q, and slowly flow from the lower part of the waste reservoir Q to the central supply portion 32 through the supply passage 45 to form a waste mountain H, Scattering into the air in the furnace chamber 30 is prevented. 6) Since the open end of the central supply pipe 9a extends to near the floor of the central supply section 32, the open end is buried in the mountain of waste H, and when the waste falls from the upper part of the central supply pipe 9a. Is temporarily stored in a pipe near the open end of the central supply pipe 9a, and then slowly flows into the furnace chamber 30 and the pile of waste H
Supplied to Therefore, scattering in the air in the furnace chamber 30 is prevented. 7) The thermite agent causes a thermite reaction in the melting section 31, and the waste heat is melted by the generated heat to form a molten slag. 8) The skirt end of the waste mountain H is related to the melting portion 31 and is sequentially melted as the thermite reaction progresses and flows down as molten slag. 9) Since the furnace body 2 is inclined low toward the molten slag discharge port 12, it is possible to prevent the melt melted in the melting section 31 from flowing out smoothly from the molten slag discharge port 12 and being stored in the melting furnace. . 10) The waste is continuously supplied to the melting unit 31 while the slope of the waste mountain H collapses. 11) The molten slag flowing down from the melting section 31 to the molten slag discharge port 12 is once blocked at the overflow weir 34 to form a molten slag pool P, and is formed at the upper end of the overflow weir 34. It overflows from the notch 34a, flows down to the molten slag discharge port 12, and is discharged outside the furnace. 12) In the melting section 31, the thermite reaction continues in a chain due to the heat generated by the reaction (and the heat of the molten slag pool P and the like). 13) By controlling the supply amount of thermite agent,
The amount of heat generated by the thermite reaction can be controlled, and the temperature of the melting part 31 can be adjusted. 14) In the molten slag pool P, heat is stored as molten slag. 15) In the molten slag pool P, unmelted waste is completely melted. 16) Even if the amount of the thermite agent is reduced or the thermite agent is intermittently charged, the thermite reaction can be continued because the heat is stored in the molten slag reservoir P, and the melting portion 31 The temperature can be finely adjusted, the temperature of the melting part 31 can be lowered, and the furnace wall is hardly deteriorated. 17) The provision of the molten slag guide portion 12a prevents the molten slag from adhering to the side wall of the molten slag discharge port 12. 18) The furnace wall is cooled by the cooling unit 6 from the outside, so that the furnace wall temperature is prevented from rising, and the furnace wall is prevented from being deteriorated. 19) Since a temperature difference occurs between the molten slag flowing through the hearth and the hearth (the inside of the furnace wall), the clinker condenses on the inside of the furnace wall.
Workability in furnace maintenance such as cleaning of the furnace chamber 30 is improved.

(Embodiment 2) Next, a waste melting apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 9 is a schematic diagram of a waste melting apparatus according to Embodiment 2 of the present invention. In FIG. 9, 1 is a waste melting furnace of the first embodiment, 9 and 10 are central and side waste input pipes, 12 is a molten slag discharge port, and 13 is a molten slag discharge pipe. Since these are the same as in the first embodiment, the same reference numerals are given and the description is omitted. 7 is an oil burner of the waste melting furnace 1, and 7a is an oil burner 7
Is a waste storage unit that stores waste, and 51 is a waste that transports waste from the waste storage unit 50a to the central waste input pipe 9 and the side waste input pipe 10. A transport feeder 54 is provided at the upper end of the central waste input pipe 9 and the side waste input pipe 10, and is a level sensor for detecting that the pipe is filled with waste. The transport controller controls the start / stop of the waste transport feeder 51 based on the transport control. 55
Is a thermite storage section for storing the thermite, 11 is a thermite injection pipe for dropping and transporting the thermite from the thermite storage section 55 to the waste melting furnace 1, and 56 is a flow rate of the thermite falling down the thermite injection pipe 11. Is a feeder for feeding a thermite agent. Reference numeral 60 denotes a secondary combustion furnace disposed below the waste melting furnace 1, reference numeral 61 denotes a secondary combustion chamber formed inside the secondary combustion furnace 60, and reference numeral 61a denotes an upper part of the secondary combustion chamber 61. A slag input port communicating with the secondary combustion chamber 61 and the molten slag discharge pipe 13, 61 b is a slag discharge port formed at the lower part of the secondary combustion chamber 61, and 61 c is formed on a side wall of the secondary combustion chamber 61. Reference numeral 64 denotes a secondary combustion burner penetrating the side wall of the secondary combustion furnace 60 facing the exhaust port 61c, and reference numeral 64a denotes a blower for blowing combustion air to the secondary combustion burner 64. 65 is an ash duct provided in communication with the exhaust port 61c, 65b is an exhaust port formed on the side wall of the ash duct 65, 65c is an ash collector formed below the ash duct 65, and 66 is an exhaust port. A heat exchanger provided in communication with the port 65b, a blower 66a for blowing cooling air to the heat exchanger 66, a bag filter 68 provided in communication with the heat exchanger 66, and a bag filter 68 The exhaust blower 70 is provided in communication with the exhaust port 68b of the exhaust blower, and the chimney 70 communicates with the exhaust side of the exhaust blower 69. Exhaust port 6 of heat exchanger 66
The air inlet 5b and the air inlet of the bag filter 68 communicate with each other via an air blower 67a, and the air outlet 68b of the bag filter 68 and the air inlet of the exhaust blower 69 communicate with each other via an air blower 67c. The blower pipe 67a and the blower pipe 67c are communicated with each other by a bypass pipe 67b that bypasses the bag filter 68, and the valves 67d and 67e determine whether the air is exhausted through the bag filter 68 or the bag filter 68 is exhausted. , 67f. Reference numeral 71 denotes a slag transport section disposed at a lower portion of the secondary combustion chamber 61 and has an input end communicating with the slag discharge port 61b. Reference numeral 72 denotes a slag pit disposed at an output end side of the slag transport section 71.

FIG. 10 is a sectional view of a main part of a waste melting apparatus according to the second embodiment. 10, reference numeral 1 denotes a waste melting furnace according to the first embodiment, 2 denotes a furnace body, 3 denotes a canopy part, 4 denotes a pressure relief lid, 5 denotes a work lid, 5b denotes a viewing hole, 6 denotes a cooling unit, and 7 denotes an oil. Burner, 8 is gas burner, 9 is central waste input pipe,
9a is a central supply pipe, 10 is a side waste input pipe, 11 is a thermite injection pipe, 12 is a molten slag discharge port, 13 is a molten slag discharge pipe, 30 is a furnace room, 31 is a melting section, and 32 is a central supply pipe. Part, 33 is a molten slag discharge part, 34 is an overflow weir part,
36 is a dividing wall, 36a is a notch, 40 is a pressure relief port,
1 is a working port and 42 is a burner injection port.
7 are the same as those described with reference to FIGS. Reference numeral 50 denotes a waste charging section disposed above the waste melting furnace 1, and 51 denotes a waste melting furnace 1.
Transport feeder 51a horizontally disposed above the
Is a motor for driving the waste transport feeder 51. A waste input hopper (not shown) for storing waste is connected to the upper portion of the waste input section 50. A waste input section 50 communicates with an upper end of the waste transport feeder 51 on the entry end side, and a central waste input pipe 9 and two side disposal sections are disposed on a lower end of the waste transport feeder 51 on the exit end side. An object input pipe 10 is in communication. The waste transport feeder 51 is constituted by a biaxial screw feeder. The waste transport feeder 51 transports the waste from the waste input section 50 to the central waste input pipe 9 and the two side waste input pipes 10, and collects the waste into aggregates. If there is, crush it. Reference numeral 53 denotes a waste input feeder disposed substantially at the center of the central waste input pipe 9, and reference numeral 53 denotes an interposed portion between the central waste input pipe 9, the side waste input pipe 10, and the waste transport feeder 51. Level sensor. The waste input feeder 53 is composed of a rotary feeder, and controls the amount of waste input into the waste melting furnace 1 from the central waste input pipe 9. The level sensor 54 stops the waste transport feeder 51 when detecting that the waste is stored up to the upper end of the central waste input pipe 9 and the side waste input pipe 10, and when not detecting, the waste transport feeder 51. Drive. Numeral 55 denotes a thermit agent storage section which is disposed directly above the thermite agent supply pipe 11 and stores the thermite agent.
Reference numeral 6 denotes a thermite agent feeder which communicates with the lower end of the thermite agent storage 55 and the upper end of the thermite agent inlet pipe 11;
Reference numeral 11 denotes an insertion damper provided at a connecting portion between the thermite agent feeding feeder 56 and the thermite agent feeding tube 11, and 11a denotes a bent portion which connects the upper and lower portions of the thermite agent feeding tube 11 to bend freely. The thermite feeder 56 is constituted by a rotary feeder, and controls the amount of the thermite fed into the waste melting furnace 1. Reference numeral 60 denotes a substantially rectangular column-shaped secondary combustion furnace connected to the lower end of the molten slag discharge pipe 13, reference numeral 61 denotes a secondary combustion chamber formed in the secondary combustion furnace 60, and reference numeral 61a denotes a ceiling of the secondary combustion chamber 61. Slag inlet port drilled at the bottom and communicating with the molten slag discharge pipe 13, 61b is a slag discharge port opened at the lower part of the secondary combustion chamber 61, and 61c is an ash duct drilled at the side wall of the secondary combustion chamber 61. An exhaust port 62 communicating with 65 is an air supply pipe penetrating through the front and rear side walls of the secondary combustion chamber 61. The air supply pipes 62 are arranged vertically and horizontally in a grid pattern.

FIG. 11 is a front view of a thermite charging section of the waste melting apparatus according to the second embodiment. In FIG. 11, the thermite storage section 55, the thermite injection feeder 56, the insertion damper 57, the thermite injection pipe 11,
Since the bent portion 11a is the same as that shown in FIG. Reference numeral 57a denotes an insertion plate of the insertion damper 57. The insertion damper 57 opens and closes the upper end opening of the thermite injection tube 11 by removing the insertion plate 57a.

FIG. 12 is a front view of a waste charging section of the waste melting apparatus according to the second embodiment. In FIG.
2a is a furnace body ceiling, 3 is a canopy, 3a is a lift, 9 is a central waste input pipe, 10 is a side waste input pipe, 51 is a waste transport feeder, 53 is an input feeder, and these are: Since they are the same as those described with reference to FIGS. 1 to 10, the same reference numerals are given and the description will be omitted. 63 is a vibrator attached to the side of the supply pipe 10 on both sides. The vibrator 63 vibrates the side supply pipe 10 so that the side supply pipe 1 is vibrated.
From 0, the waste is smoothly moved to the side supply chamber 35 of the waste melting furnace 1 and the waste is filled. At the lower end of the waste transport feeder 51 on the exit side, a central waste input pipe 9 is provided.
The two side waste input pipes 10 communicate with each other, and the side waste input pipes 10 branch right and left.

FIG. 13 is a sectional view taken along line FF of FIG. In FIG. 13, 1 is a waste melting furnace, 2 is a furnace body,
3 is a canopy part, 12 is a molten slag discharge port, 13 is a molten slag discharge pipe, 30 is a furnace chamber, 60 is a secondary combustion furnace, 61 is a secondary combustion chamber, 61a is a slag input port, 61b is a slag discharge port, Reference numeral 61c denotes an exhaust port, and 62 denotes an air supply pipe. These are the same as those described with reference to FIG. 64 is the secondary combustion chamber 61
Is a secondary combustion burner disposed at a position facing the exhaust port 61c on the rear side wall. 65 is an ash duct connected to the exhaust port 61c of the secondary combustion furnace 60, 65a is an intake port formed on the side of the ash duct 65 and connected to the exhaust port 61c, 65b
Reference numeral denotes an exhaust port provided at a position opposite to the suction port 65a on the side of the ash duct 65, and reference numeral 65c denotes an ash collector provided below the ash duct 65.

The operation of the thus configured waste melting apparatus according to the second embodiment will be described below. When the waste pulverized in the form of powder and granules is thrown into the waste storage unit 50a, the waste is sent from the waste throwing unit 50 to the waste transport feeder 51. Next, the waste is fed into the central waste input pipe 9 and the side waste input pipe 10 by the waste transport feeder 51. The waste input into the central waste input pipe 9 is sent to the central supply unit 32 at a constant speed by a waste input feeder 53. Further, the waste put into the side waste introduction pipe 10 is sent to the side supply chamber 35. At this time, the side waste input pipe 10 is
Is vibrated, and the waste moves smoothly in the pipe due to the vibration and is filled at a high density. Also, the side waste input pipe 1
When the waste is filled up to 0 and the upper end of the central waste input pipe 9, it is detected by the level sensor 54, and based on a signal from the level sensor 54, the transport control unit 54 a temporarily stops the waste transport feeder 51. When the melting proceeds and the waste is drawn into the furnace, the level is detected by the level sensor 54, and based on a signal from the level sensor 54, the transport control unit 54 a restarts the operation of the waste transport feeder 51. At this time, a thermite agent is stored in the thermite agent storage unit 55 in advance. When the waste is charged into the furnace and the waste mountain H is formed in the central supply unit 32, the insertion damper 57 is opened, the thermite agent charging feeder 56 is activated, and the waste is melted into the melting unit 31 of the waste melting furnace 1. Inject a thermite agent. When the thermite agent is injected into the melting unit 31, the thermit reaction is started in the melting unit 31 by the ignition rod, and the melting is started. At the time of melting, the rotational speed of the thermite agent feeder 56 is adjusted while watching the degree of melting of the waste, and the temperature of the melting unit 31 is adjusted. When the melting is started, the secondary combustion burner 64 is ignited, and the inside of the secondary combustion chamber 61 is heated to about 850 ° C. At this time, the exhaust blower 69 is started, and the heat exchanger 6 is connected through the exhaust port 65b of the ash duct 65.
6. Suction and exhaust to the chimney 70 through the bag filter 68. Thereby, in the waste melting furnace 1, the exhaust gas generated at the time of melting the waste is sucked from the molten slag discharge port 12 into the secondary combustion chamber 61, and is sent to the ash duct 65 after being burned in the secondary combustion chamber 61. Can be In the ash duct 65, the ash and the exhaust gas after combustion are separated, the exhaust gas is sucked and exhausted from an exhaust port 65b, and the ash is collected and discharged to an ash collecting port 65c provided at a lower portion of the ash duct 65. Dust not removed by the ash duct 65 is completely removed by the bag filter 68. Further, the heat exchanger 66 cools the exhaust gas to 200 ° C. or lower. Thereby, low-melting-point substances such as mercury that may be contained in the exhaust gas are removed. On the other hand, the molten slag is supplied from the molten slag discharge port 12 to the molten slag discharge pipe 1.
3. The slag is dropped into the secondary combustion chamber 61 through the slag input port 61a, passes through the secondary combustion chamber 61, and is discharged from the slag discharge port 61b. The molten slag discharged from the slag discharge port 61b is conveyed while being cooled by the slag conveying section 71, and is collected in a slag pit 72.

As described above, according to the present embodiment, the following operations are provided. 1) The temperature of the melting unit 31 can be adjusted by adjusting the thermite agent feeder 56. 2) When the operation of the waste melting furnace 1 is stopped, the insertion damper 57
Is closed to prevent the humidity from rising from the furnace chamber 30 to the thermite agent storage 55, and prevent the thermite agent from being exposed to moisture. 3) The waste is automatically transferred and supplied to the waste melting furnace 1 from the waste input section 50 by the waste transfer feeder 51. The transport speed of the waste transport feeder 51 is automatically adjusted by the level sensor 54. 4) By vibrating the side waste introduction pipe 10 with the vibrator 63, waste can be smoothly and densely injected into the side supply chamber 35, thereby enabling continuous operation. 5) Exhaust gas generated by melting of waste is discharged to the secondary combustion chamber 6
1 and can be burned. 6) The exhaust gas and the heated air in the furnace chamber 30 of the waste melting furnace 1 are sucked into the secondary combustion chamber 61 for suction and exhaust from the secondary combustion chamber 61 through the molten slag discharge port 12, and Temperature rise is suppressed. 7) Ash from the exhaust gas after the secondary combustion is removed by the ash duct 65. 8) The exhaust gas that has passed through the ash duct 65 passes through the heat exchanger 66 to remove low-melting-point substances. 9) The exhaust gas that has passed through the heat exchanger 66 is
By passing through 8, dust is completely removed.

(Embodiment 3) Next, the configuration of a waste melting apparatus according to Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 14 is a sectional view of a main part of a waste melting apparatus according to Embodiment 3 of the present invention, and FIG.
FIG. 16 is a cross-sectional view taken along the arrow G. FIG. 16 is a side view of a main part of a thermite agent charging mechanism of the waste melting apparatus according to the third embodiment. FIG. It is a principal part top view of a mechanism. In FIG. 14, 2 is a furnace body, 2a is a furnace body ceiling part, 3 is a canopy part, 4 is a pressure relief lid, 5 is a work lid, 5b is a viewing hole, 6 is a cooling unit, and 6c.
Is a drain hole, 7 is an oil burner, 8 is a gas burner,
11 is a thermite injection pipe, 11a is a bent portion, 12 is a molten slag discharge port, 16 is a lower support, 30 is a furnace chamber, 31
Is a melting section, 32 is a central supply section, 33 is a molten slag discharge section, 34 is an overflow weir section, 40 is a pressure relief port, 41 is a working port,
2 is a burner outlet, 51 is a waste transport feeder, 54 is a level sensor, 55 is a thermite storage section, 56 is a thermite feed feeder, 57 is an insertion damper, H is a waste pile, and P is a molten slag pool. Since these are the same as in the first and second embodiments, the same reference numerals are given and the description is omitted. Reference numeral 100 denotes a waste inlet, which is a rectangular opening formed at the center of the furnace body ceiling 2a behind the thermite agent inlet pipe 11, and 101 denotes a waste inlet provided at the upper part of the furnace body 2 and communicates with the waste inlet 100. Waste input pusher 101i, a frame of the waste input pusher 101,
101a is a waste outlet formed on the downstream side of the frame 101i, 101b is an inlet formed on the upper rear of the frame 101i, and 101c is a waste sent from the inlet 101b to the waste input pusher 101. Extrusion port 10
The piston to be pushed to 1a, 101d is the piston 101c
An air cylinder 101e is disposed behind the upper surface of the furnace body 2 and is a supporting member for supporting the waste input pusher 101. Piston 10 of waste input pusher 101
The front end portion 101f of 1c is formed in an upwardly sloped shape, so that the waste material in a granular form can be pushed smoothly without clogging the lower end of the inlet 101b. 9b is a delivery port of the waste transport feeder 51 and a waste input pusher 101.
And a level sensor 54 disposed on the waste input pipe 9b and including a pin leveler and the like for detecting the level of the particulate waste in the pipe. The waste is dropped and supplied from the waste transport feeder 51 to the waste input pusher 101 through the waste input pipe 9b. Reference numeral 11b denotes a reducer connected to an inlet at the top of the thermite feeder 56 and opened at the upper and lower ends. And a thermit agent input pusher 103 connected to the upper end opening of the reducer 11b. Reference numeral 103 denotes a support frame in which the thermite agent input pusher 102 and the thermite agent reservoir 55 are provided. The reducer 11b is formed in the shape of a truncated cone having a large opening area at the upper end and a small opening area at the lower end. The granular thermite stored in the thermite storage section 55 is pushed to the reducer 11b by the thermite injection pusher 102, and is injected from the reducer 11b into the thermit injection tube 11 at a constant speed by the thermite injection feeder 56. Reference numeral 104 denotes a molten slag discharge section temperature sensor, which is a temperature sensor including an infrared sensor and the like, which is disposed on the furnace body ceiling section 2a above the molten slag discharge section 33;
5 is a furnace pressure sensor for detecting the atmospheric pressure inside the furnace chamber 30;
Reference numeral 6 denotes a melting section temperature sensor which is a heat radiation type temperature sensor disposed on the furnace body ceiling section 2a above the melting section 31.

In FIG. 15, reference numeral 101g denotes a pair of sliding shafts projecting from the back of the piston 101c in a pair on the left and right sides of the air cylinder 101d. Reference numeral 101h denotes a sliding shaft fixed to the upper surface of the support member 101e and slidably supporting the sliding shaft 101g. Bearing. A sintered oil-impregnated bearing is suitably used for the bearing 101h. This is because there is no need to lubricate, so that maintainability is excellent, and there is no danger of igniting the oil, resulting in excellent safety.

In FIG. 16, reference numeral 102a denotes a thermite injection pusher 102 which communicates with the thermite storage 55.
, An outlet of the thermite agent input pusher 102 communicating with the opening at the upper end of the reducer 11b;
102c is an outlet 1 from the inlet 102a for the thermite agent.
A piston 102d that horizontally pushes the piston 102b, and an air cylinder 102d that drives the piston 102c back and forth. The thermite agent has an average particle size of 0.1 in order to improve the reactivity.
0004 mm to 5 mm, preferably 0.004 mm to 2
mm. Such a thermite having a small particle size easily takes in moisture in the air and moisture rising from the furnace chamber 30, and when absorbing moisture in the air and moisture rising from the furnace chamber 30, the angle of repose becomes large. And adhesion and solidification are likely to occur. Therefore, the thermite agent is liable to cause a crosslinking phenomenon such as an adhered / solidified arch and a rat hole in the container of the reservoir of the thermite agent. In the thermite injection mechanism according to the present embodiment, the thermite injection pusher 1
02 and reducer 11b by required amount
Therefore, only a small amount of thermite agent is always stored in the reducer 11b, and the crosslinking phenomenon does not occur in the reducer 11b. In addition, the thermite storage section 5
The rear surface and both side surfaces of the wall surface of 5 are vertical, and the front surface is formed so that the inclination angle is sufficiently large, the shape is asymmetric, and the left and right granular pressures are unbalanced. Therefore, the pressure distribution is such that the granules easily leak out dynamically from the outlet. Furthermore, since the outlet of the thermite agent storage 55 can be formed large by the reducer 11b, the opening area of the outlet of the thermite agent storage 55 can be made sufficiently large. Therefore, it becomes possible to make the crosslinking phenomenon of the thermite agent difficult to occur. Further, the thermite agent deposited at the outlet of the thermite agent storage section 55 is pressure-fed to the reducer 11b by the thermite agent input pusher 102. Is prevented. Further, even if the humidity rises together with the hot air from the furnace chamber 30, since the moisture does not directly enter the thermite agent storage 55, the crosslinking phenomenon in the thermite agent storage 55 is prevented.

In FIG. 17, the inlet 102 a and the outlet 102 b of the thermite agent input pusher 102 are disposed at positions shifted from each other in the horizontal direction. Is configured not to enter directly.

The operation of the thus configured waste melting apparatus according to the third embodiment will be described below with reference to FIGS. The waste is fed into the waste input pipe 9b by the waste transport feeder 51. Waste is accumulated in the waste input pipe 9b, and when the waste is filled up to near the upper part of the waste input pipe 9b, it is detected by the level sensor 54 and the waste transport feeder 5 is detected.
1 is stopped. When the waste in the waste input pipe 9b is sent out and the level of the waste in the waste input pipe 9b decreases,
This is detected by the level sensor 54, the waste transport feeder 51 is restarted, and waste is injected into the waste input pipe 9b. The waste accumulated in the waste input pipe 9b is:
The waste material is pushed to the waste material inlet 100 by the waste material pusher 101 and is dropped and supplied to the central supply part 32 in the furnace chamber 30. Since the waste is forcibly pushed by the waste input pusher 101, even when the average particle size of the waste is large,
Waste can be smoothly charged into the furnace. The waste input to the central supply unit 32 is located there at the waste pile H.
Is formed, and the skirt end of the waste mountain H relates to the melting portion 31. When the waste supplied to the furnace chamber 30 contains moisture, the oil burner 7 is ignited and the waste is calcined to be dried. This is not necessary if the waste is already dry. At this time, suction and exhaust are performed from the molten slag discharge port 12. Thereby, the waste gas generated from the waste can be recovered from the molten slag discharge port 12 without leaking out of the furnace. When the waste is sufficiently dried, the oil burner 7 is stopped. On the other hand, when the waste is charged into the furnace and the waste mountain H is formed in the central supply part 32, the insertion damper 57
Is opened, and the thermite agent input pusher 102 and the thermite agent input feeder 56 are activated. The thermite agent stored in the thermite agent storage section 55 is injected into the reducer 11b by the thermite agent input pusher 102 and accumulated. The thermite agent accumulated in the reducer 11b is injected into the thermite injection tube 11 at a constant speed by the thermite injection feeder 56, and is injected into the melting section 31 in the furnace chamber 30. The operator ignites the thermite agent charged into the melting portion 31 from the work port 41 with an ignition rod to start a thermite reaction. The thermite reaction is
Since the thermite agent is continuously supplied from the thermite supply pipe 11, it is continuously maintained in a chain, and the heat of the reaction can continuously melt the waste. The melting temperature in the melting section 31 is detected by a melting section temperature sensor 106,
The temperature is adjusted by adjusting the rate of introduction of the thermite agent according to the detected temperature and the amount of the thermite reaction.
In addition, since the thermite agent is dropped and supplied from the upper part of the furnace chamber 30, there is no danger that the thermite reaction will spread upward. Further, even if a spark generated by the thermite reaction scatters into the thermite injection tube 11, the thermit injection tube 11 and the reducer 11b are isolated by the thermite injection feeder 56. The spread of fire is prevented. The particulate waste accumulated in the melting section 31 is melted by the reaction heat generated by the thermite reaction to become a molten slag. Fire floor 30a
Since the slag is inclined downward from the rear of the furnace chamber 30 toward the front, the molten slag flows down from the melting portion 31 toward the molten slag discharge port 12. At this time, the molten slag is temporarily stopped in the overflow weir 34, and a molten slag pool P is formed from the upstream side of the overflow weir 34 to the melting portion 31. Thereby, heat is stored as molten slag in the molten slag pool P. Due to the stored heat, the unmelted waste is completely melted in the molten slag pool P. Further, since the heat is stored in the molten portion 31 as the molten slag pool P, the thermite reaction can be maintained even if the thermite agent is intermittently supplied, and the temperature range of the adjustable melt portion 31 can be expanded. Also, fine temperature control is possible. Furthermore, since the unreacted thermite agent also reacts in the molten slag pool P, the reaction efficiency of the thermite agent is also improved. Since the mountain of waste H forms a slope from the central supply part 32 to the melting part 31, the waste in the melting part 31 becomes a molten slag and becomes a molten slag.
When the wastewater flows out, the waste mountain H collapses and waste is automatically supplied. When the molten slag pool P is filled up to the notch 34a of the overflow weir 34, the molten slag overflows from the notch 34a and flows down to the molten slag discharge port 12. The temperature of the molten slag flowing out of the furnace through the molten slag discharge port 12 is detected by a molten slag discharge section temperature sensor 104. When the temperature of the molten slag at the molten slag discharge port 12 is low, clinker adheres to the molten slag discharge port 12 and the molten slag discharge port 12 is closed. In order to prevent this, when the temperature detected by the molten slag discharge section temperature sensor 104 becomes equal to or less than a predetermined value, the charging speed of the thermite agent charging feeder 56 is increased, the temperature of the molten slag is raised, and the molten slag discharge port 12 is Prevents clinker from attaching. In the entire process, the furnace wall of the furnace body 2 is cooled from the outside of the wall by the air circulated to the cooling unit 6.
As a result, a slag layer cooled by the furnace wall is formed on the floor surface of the furnace chamber 30, and the high-temperature molten slag flows on the slag layer, thereby preventing the hearth from melting or deteriorating due to heat. Is done. In addition, since a temperature difference occurs between the molten slag and the hearth, clinker is prevented from being welded to the hearth, the clinker is easily peeled off, damage to the hearth is prevented, and maintenance is also facilitated. . Since the waste is pushed by the waste input pusher 101,
Regardless of the particle size and angle of repose of the waste, the waste is prevented from being clogged in the waste input pipe 9b due to the crosslinking phenomenon, and the waste can be smoothly supplied into the furnace.

As described above, according to the present embodiment, the following operations are provided. 1) The temperature of the melting unit 31 can be adjusted by adjusting the thermite agent feeder 56. 2) When the operation of the waste melting furnace 1 is stopped, the insertion damper 57
Is closed to prevent the humidity from rising from the furnace chamber 30 to the thermite agent storage 55. 3) The waste is automatically transported and supplied to the waste melting furnace 1 by the waste transport feeder 51. The transport speed of the waste transport feeder 51 is automatically adjusted by the level sensor 54. 4) By feeding the waste under pressure by the waste input pusher 101, the waste can be smoothly injected into the side supply chamber 35. 5) Since the waste is forcibly pushed by the waste input pusher 101, the waste can be smoothly input even when the average particle size of the waste is large or when the angle of repose is large. 6) Since the thermite agent is charged into the reducer 11b little by little from the thermite agent storage section 55 and is injected by the thermite agent feeder 56, the thermit agent is prevented from clogging due to a crosslinking phenomenon. 7) Melting part 3 detected by melting part temperature sensor 106
By controlling the rotation speed of the thermite agent feeder 56 based on the temperature of 1, the temperature of the melting unit 31 can be controlled. 8) The temperature of the molten slag discharge section 33 is detected by the molten slag discharge section temperature sensor 104, and the thermite agent feeder 56 is controlled so that the temperature of the molten slag discharge section 33 does not drop below a certain value. Clinker accumulates in the slag discharge section 33 and the molten slag discharge port 12
Is prevented from being blocked.

(Embodiment 4) FIG. 18 (a) is a schematic view showing the vicinity of a melting part of a waste melting furnace according to Embodiment 4 of the present invention, and FIG. It is a perspective see-through view of the vicinity of the melting part of the melting furnace. In FIG. 18, 9 is a central waste input pipe, 11 is a thermite injection pipe, 12 is a molten slag discharge port, 30 is a furnace chamber, 31 is a melting section, 32 is a central supply section, 33 is a molten slag discharge section, 34
Is an overflow weir, 34a is a notch, H is a pile of waste, P
Denotes a molten slag pool, which are the same as in the first embodiment, and are denoted by the same reference numerals and description thereof is omitted. 30
a is a grate of the furnace chamber 30; The grate 30a is formed in a flat shape from the molten slag discharge part 33 to the melting part 31 and in an arc-shaped curved surface inclined upward toward the central supply part 32 from the melting part 31 to the central supply part 32. ing. Also in this embodiment, similarly to Embodiment 1, the furnace body is variably locked to the base so that the inclination angle of the furnace body can be changed according to the repose angle of the waste.

With the above configuration, the central supply unit 32
The upstream side has a steeper slope, so that the waste can be supplied more smoothly from the central supply unit 32 to the melting unit 31 at the time of waste input or when the amount of waste input is small. Action is obtained.

(Embodiment 5) FIG. 19A is a perspective perspective view of the vicinity of a melting part of a waste melting furnace according to Embodiment 5 of the present invention, and FIG. FIG. 3 is a cross-sectional plan view of a vicinity of a melting portion of a material melting furnace. In FIG. 19, 9 is a central waste input pipe, 11 is a thermite agent input pipe, 12 is a molten slag discharge port, 30 is a furnace chamber, 31 is a melting section, 32 is a central supply section, 33 is a molten slag discharge section, 3
4 is an overflow weir, 34a is a notch, H is a pile of waste,
P is a molten slag pool, which is the same as in the first embodiment, and is denoted by the same reference numerals and description thereof is omitted. Three
0a is a grate of the furnace chamber 30. The grate 30a is a flat surface inclined downward from the central supply part 32 to the molten slag discharge part 33, and is formed so that its width becomes narrow from the central supply part 32 to the molten slag discharge part 33.
Also in this embodiment, similarly to Embodiment 1, the furnace body is variably locked to the base so that the inclination angle of the furnace body can be changed according to the repose angle of the waste.

With the above configuration, the molten slag flowing down from the melting section 31 is collected at the center as it flows down to the molten slag discharge port 12, so that the capacity of the central supply section 32 and the melting section 31 can be increased. And the melting part 3
1 can be enlarged, and the effect of increasing the waste treatment efficiency can be obtained.

(Embodiment 6) FIG. 20 is a sectional view of a main part of a waste melting furnace according to Embodiment 6. 20, 1 is a waste melting furnace, 2 is a furnace body, 2a is a furnace body ceiling portion,
3 is a canopy part, 4 is a pressure release lid, 5 is a work lid, 5b is a peephole,
6 is a cooling unit, 6c is a drain hole, 7 is an oil burner,
8 is a gas burner, 12 is a molten slag discharge port, 12a is a molten slag guide, 16 is a lower support, 30 is a furnace chamber, 33
Is a molten slag discharge section, 34 is an overflow weir section, 36 is a partition wall,
36a is a cutout portion of the dividing wall 36, 40 is a pressure relief port, 41
Denotes a working port, and 42 denotes a burner injection port. These are the same as those in the first embodiment, and thus the same reference numerals are given and the description is omitted. Reference numeral 9 denotes a central waste insertion pipe inserted through the central portion of the upper surface of the canopy portion 3, and reference numeral 11 denotes an central hole disposed behind the central waste input tube 9 of the canopy portion 3. This is a thermite material input pipe. The powdery and granular waste is dropped from the central waste input pipe 9 and the side waste input pipe 10 into the central supply section 32 in the furnace chamber 30, and the granular thermite material is supplied from the thermite material input pipe 11 to the furnace chamber. Central supply 32 within 30
Is dropped into the melting section 31 located on the upstream side.

In the melting furnace of the present embodiment configured as described above, the mountain of waste H is formed on the downstream side of the melting part 31, and the waste is melted in the melting part 31 to form a molten slag. The slag goes around the waste mountain H and flows down (toward the molten slag discharge port 12). At this time, after the molten slag flows down while melting the skirt end of the waste mountain H, a molten slag pool P is formed on the upstream side of the overflow weir 34. Other operations are described in the first embodiment.
The description is omitted because it is the same as.

As described above, according to the present embodiment, since the molten slag flows down while melting the bottom of the mountain H of waste, the heat generated by the thermite reaction is more efficiently discharged to the waste. It is used for melting, and has an effect that at the end of charging of waste, all of the waste charged into the furnace is melted.

[0059]

As described above, according to the waste melting furnace according to the first aspect, the furnace chamber formed inside the furnace body, the melting section disposed inside the furnace chamber, and the powder in the melting section. A waste supply unit for supplying granular waste, a thermite agent supply unit for supplying a granular thermite agent to the melting unit, and a molten slag discharge unit disposed downstream of the melting unit in the furnace chamber. 1) Since the thermite reaction continues in the melting section in a chain, it is possible to continuously melt the waste by continuously supplying the thermite agent to the melting section. No need to heat from, low running cost,
A waste melting furnace capable of saving energy can be provided. 2) Since the thermite reaction occurs locally only in the melting part of the furnace chamber, the entire furnace pair is not heated to a high temperature, the deterioration of the furnace wall is small, the safety during operation is high, and the furnace cooling equipment is used. Therefore, a waste melting furnace having a small heat radiation area and a high heat efficiency due to a small heat radiation area can be provided. 3) It is possible to provide a waste melting furnace which has a simple furnace structure, does not require large-scale equipment, has low production costs, and is easy to maintain. The advantageous effect described above can be obtained.

According to a second aspect of the present invention, in the waste melting furnace according to the first aspect, the molten slag disposed between the melting section and the molten slag discharge section is temporarily blocked to melt the molten slag. By providing a weir portion for forming a slag reservoir, in addition to the effect according to claim 1, 1) a waste melting furnace in which unmelted waste is prevented from being discharged accompanying molten slag. Can be provided. 2) It is possible to provide a waste melting furnace in which the temperature of the melting part can be delicately adjusted, the temperature of the melting part can be lowered, and the furnace wall is hardly deteriorated. The advantageous effect described above can be obtained.

According to the third aspect of the present invention, in the waste melting furnace according to the first or second aspect, the waste melting furnace is formed or disposed on the upstream side, downstream side, or side of the melting portion of the furnace chamber. A waste supply part, and a molten slag discharge part formed in an opening shape on a floor part on a downstream side of the melting part of the furnace chamber, and the waste supply part is formed by a supply pipe, or A central supply section having a floor continuous with the section and communicating with the melting section; and a central supply section of the furnace chamber and / or disposed on both sides of the melting section and inclined downwardly toward the furnace chamber to form a furnace chamber. A pair of side supply chambers having a floor connected to each other, a pair of partition walls arranged on the ceiling of the furnace chamber to separate the furnace chamber and the side supply chamber, and a gap formed at a lower end of the partition wall. A pair of supply passages communicating the side supply chamber with the central supply section, and an opening end inserted through the ceiling of the central supply section and having an open end at the center of the furnace chamber. By providing a central supply pipe extending to the supply section and a thermite agent supply section disposed above the melting section, in addition to the effects described in claim 1 or 2, 1) powder is formed by a very simple mechanism. It is possible to provide a waste melting furnace that can continuously supply granular waste to a melting section without scattering into the air in a furnace chamber. 2) It is possible to provide a waste melting furnace in which powdery and granular wastes are prevented from being scattered in the air in the furnace chamber and sucked out of a molten slag discharge port without being melted. The advantageous effect described above can be obtained.

According to the fourth aspect of the present invention, in the waste melting furnace according to the third aspect, the dividing wall is vertically movable on the ceiling of the furnace chamber so as to expand and contract the gap of the supply passage. And / or the partition wall is provided with a notch at the lower end on the upstream side of the melting part, in addition to the effect of claim 3, a. The partition wall is vertically arranged on the ceiling of the furnace chamber so as to expand and contract the gap of the supply passage, so that the width of the gap of the supply passage can be adjusted according to the type of waste (bulk density, angle of repose). Can be provided. b. Since the partition wall is provided with a notch at the lower end on the upstream side of the melting section, it is possible to provide a waste melting furnace in which ash is smoothly supplied from the side supply chamber to the central supply section.
The advantageous effect described above can be obtained.

According to a fifth aspect of the present invention, in the waste melting furnace according to any one of the first to fourth aspects, the furnace body is formed so that the downstream side is lower, or the furnace body is inclined. The angle is freely locked to the furnace base, and / or
A cooling unit is provided for cooling the outside of the furnace wall from the side to the floor forming the furnace chamber shell, and / or the molten slag discharge unit is provided with an opening edge formed in an eaves shape on the upstream side of the furnace chamber. Thus, in addition to the effects described in any one of claims 1 to 4, a. It is possible to provide a waste melting furnace in which waste melted in the melting section is smoothly discharged from the molten slag discharge section. b. The provision of the cooling unit for cooling the outside of the side wall or the floor of the furnace wall forming the furnace chamber outer shell makes it possible to 1) provide a waste melting furnace having a long life of the furnace. 2) It is possible to provide a waste melting furnace with good workability in furnace maintenance. The advantageous effect described above can be obtained. c. Provided is a waste melting furnace in which the molten slag discharge section is provided with an opening edge formed in an eaves shape on the upstream side of the furnace chamber, whereby clinker is prevented from adhering to a lower portion from the discharge port of the molten slag discharge section. It is possible to do. The advantageous effect described above can be obtained.

According to a sixth aspect of the present invention, there is provided a waste melting apparatus according to any one of the first to fifth aspects, wherein the waste melting furnace is disposed above the waste supply section and disposed. One or more waste input pipes for inputting waste to a waste supply part, a waste storage part for storing waste, and waste that communicates with the waste storage part and the waste input pipe to convey waste. A conveying feeder, and a thermite agent supply unit, a thermite agent supply pipe arranged above the melting unit, a thermite agent storage unit arranged above the thermite agent supply tube, and a thermite agent from the thermite agent storage unit By providing a thermite agent feeder that adjusts the flow rate of the thermite agent to be fed into the inlet pipe, 1) Thermit agent is continuously supplied by the thermite agent feeder to the waste melting furnace by being continuously supplied to the waste melting furnace. Melting things It is possible to provide a waste melting apparatus that does not require external heating, has low running costs, and can save energy. 2) Since the thermite reaction occurs locally only in the melting part in the furnace chamber, the entire waste melting furnace pair is not heated to a high temperature, the deterioration of the furnace wall of the waste melting furnace is small, and safety during operation is ensured. Thus, a waste melting apparatus having high heat efficiency can be provided because the cooling facility of the waste melting furnace is small and the heat radiation area is small. 3) Since the structure of the waste melting furnace itself is simple and does not require large-scale equipment, a waste melting apparatus with low production cost and easy maintenance can be provided. 4) It is possible to provide a waste melting apparatus capable of keeping the melting temperature of the melting section substantially constant. 5) It is possible to provide a waste melting apparatus capable of automatically supplying waste to a waste supply unit through a waste input pipe. The advantageous effect described above can be obtained.

According to the seventh aspect of the present invention, in the waste melting device according to the sixth aspect, the waste melting apparatus is connected to the waste input pipe and the waste supply unit and supplied to the waste input pipe. The provision of the waste input pusher that pushes waste to the waste supply unit has the effect described in claim 6. In addition, even when the average particle size of the waste is large or the angle of repose of the waste is large, Further, the advantageous effect that a waste melting apparatus capable of smoothly supplying waste to the waste supply unit can be provided can be obtained.

According to the eighth aspect of the present invention, in the waste melting apparatus according to the sixth or seventh aspect, the thermite agent temporary storage section provided at the inlet of the thermite agent input feeder; The terminating agent input pusher for pushing the thermite agent from the agent storing section to the thermite agent temporary storing section is provided, in addition to the effect according to claim 6 or 7, the thermit agent is discharged from the thermite agent storing section by a crosslinking phenomenon. The advantageous effect of being able to provide a waste melting apparatus in which clogging at the outlet is prevented can be obtained.

According to a ninth aspect of the present invention, in the waste melting apparatus according to any one of the sixth to eighth aspects, the waste charging pipe is disposed at an upper end of the waste charging pipe. A level sensor for detecting the level of waste disposed in
9. A transport control unit for stopping transport of the waste transport feeder when the level sensor detects that the waste input pipe is filled with waste, and wherein the transport controller is configured to stop the transport of the waste transport feeder. In addition to the effects described above, there is obtained an advantageous effect that it is possible to provide a waste melting apparatus in which the transfer of the waste transfer feeder is automatically stopped when the waste is filled up to the upper end of the waste input pipe.

According to the tenth aspect of the present invention,
The waste melting apparatus according to any one of claims 6 to 9, wherein a vibrator configured to vibrate the waste input pipe disposed on the waste input pipe and / or a thermite agent input pipe is opened and closed. Claims 6 to 9 in which the damper is provided.
In addition to the effects described in any one of the above, a. With the provision of the vibrator that is disposed on the waste input pipe and vibrates the waste input pipe, it is possible to provide a waste melting apparatus in which the waste smoothly flows down the waste input pipe. b. By providing a damper that opens and closes the thermite injection pipe, the damper is closed when the operation of the waste melting furnace is stopped,
A waste melting apparatus capable of preventing moisture in the furnace chamber from rising to the thermite agent storage section can be provided. The advantageous effect described above can be obtained.

According to the waste melting apparatus of the eleventh aspect, the waste melting furnace according to any one of the first to fifth aspects is connected to a lower part of the waste melting furnace. A secondary combustion furnace, comprising: a secondary combustion furnace, a secondary combustion chamber formed in the furnace, and a slag inlet formed in the ceiling of the secondary combustion chamber and communicating with the molten slag discharge section, A slag discharge port formed just below the slag input port of the secondary combustion chamber, an exhaust port formed on the side wall of the secondary combustion chamber, and a hole penetrated at a position facing the exhaust port on the side wall of the secondary combustion chamber. With the secondary combustion burner provided, an advantageous effect of being able to provide a waste melting device capable of burning waste gas generated during melting of waste in the secondary combustion chamber can be obtained. Can be

According to the twelfth aspect of the present invention,
12. The waste melting device according to claim 11, wherein the ash removing device communicates with an exhaust port of the secondary combustion chamber to remove ash of exhaust gas from the secondary combustion chamber, and heats the exhaust gas passing through the ash removing device. 2. A dust removing device for removing dust from exhaust gas passing through the heat exchanger, the dust removing device comprising:
In addition to the effects described in 1, the ash, dust,
The advantageous effect of being able to provide a waste melting apparatus capable of removing low-melting substances can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a waste melting furnace according to Embodiment 1 of the present invention.

FIG. 2 is a front view of the waste melting furnace according to the first embodiment.

3A is a plan view of a waste melting furnace according to the first embodiment. FIG. 3B is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a sectional view taken along line DD of FIG. 4;

FIG. 7 is a sectional view taken along line EE of FIG. 4;

FIG. 8 is a schematic diagram around a melting part of the waste melting furnace in the first embodiment.

FIG. 9 is a schematic view of a waste melting apparatus according to Embodiment 2 of the present invention.

FIG. 10 is a sectional view of a main part of a waste melting apparatus according to a second embodiment.

FIG. 11 is a front view of a thermite charging section of the waste melting apparatus according to the second embodiment.

FIG. 12 is a front view of a waste charging section of the waste melting apparatus according to the second embodiment.

FIG. 13 is a sectional view taken along line FF of FIG. 10;

FIG. 14 is a sectional view of a main part of a waste melting apparatus according to a third embodiment of the present invention.

FIG. 15 is a cross-sectional view of the waste introduction mechanism of the waste melting apparatus according to the third embodiment, taken along the line GG.

FIG. 16 is a side view of a main part of a thermite injection mechanism of the waste melting apparatus according to the third embodiment.

FIG. 17 is a side view of a main part of a thermite injection mechanism of the waste melting apparatus according to the third embodiment.

FIG. 18 (a) is a schematic view of a vicinity of a melting part of a waste melting furnace according to a fourth embodiment of the present invention. (B) A perspective perspective view of a vicinity of a melting part of the waste melting furnace according to the fourth embodiment.

19A is a perspective perspective view of the vicinity of a melting part of a waste melting furnace according to a fifth embodiment of the present invention. FIG. 19B is a cross-sectional plan view of the vicinity of a melting part of the waste melting furnace according to the fifth embodiment.

FIG. 20 is a sectional view of a main part of a waste melting furnace according to the sixth embodiment.

FIG. 21 is a sectional view of an essential part of an incineration ash melting furnace disclosed in Japanese Patent Publication No.

FIG. 22 is a sectional view of a main part of an incineration ash melting furnace disclosed in Japanese Patent Publication No.

FIG. 23 is a sectional view of a main part of an incineration ash melting furnace disclosed in Japanese Patent Publication No.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waste melting furnace 2 Furnace body 2a Furnace ceiling part 3 Canopy part 3a Lifting part 4 Pressure relief lid 5 Working lid 5a Working lid locking part 5b Lookout hole 5c Hinge 6 Cooling part 6a Cooling part ventilation port 6b Cooling part exhaust port 6c Drain hole 7 Oil burner 7a, 64a, 66a Blower 8 Gas burner 9 Central waste input pipe 9a Central supply pipe 9b Waste input pipe 10 Side waste input pipe 11 Thermit agent input pipe 11a Bent portion 11b Reducer 12 Melt slag Discharge port 12a Molten slag guide 13 Molten slag discharge pipe 14 Front side support 14a Inclined angle forming hole 15 Rear side support 16 Lower support 17 Mount 18 Front mount support member 19 Rear mount support member 19a Rear beam member 20 Mount side frame member 21 Furnace body holding member 21a Hole 22 Holding material 23 Rotation support member 30 Furnace chamber 30a Fire bed DESCRIPTION OF SYMBOLS 1 Melting part 32 Central supply part 33 Melt slag discharge part 34 Overflow weir part 34a, 36a Notch part 35 Side supply chamber 36 Partition wall 40 Pressure relief port 41 Working port 42 Burner injection port 45 Supply passage 50 Waste input section Reference Signs List 50a Waste storage unit 51 Waste transport feeder 51a Motor 53 Waste input feeder 54 Level sensor 54a Transport control unit 55 Thermite agent storage unit 56 Thermite agent input feeder 57 Insert damper 57a Insert plate 60 Secondary combustion furnace 61 Secondary Combustion chamber 61a Slag input port 61b Slag discharge port 61c, 65b, 68b Exhaust port 62 Air supply pipe 63 Vibrator 64 Secondary combustion burner 65 Ash duct 65a Suction port 65c Ash collection port 66 Heat exchanger 67a, 67c Blast pipe 67b Bypass Pipe 67d, 67e, 67f Valve 68 Bag filter 69 Exhaust Blower 70 chimney 71 slag transport section 72 slag pit H waste pile P molten slag pool Q waste pool 80 incineration ash melting furnace 81 mixing and stirring section 82 feeder 83 stirring blade 84 compression and solidification section 84a, 85a, 101c, 102c Piston 84b, 85c Cylinder 84c, 85b, 101d, 102d Air cylinder 85 Solid delivery unit 85d, 101f Tip 86 Funnel liner 87 Rotation drive unit 87b Rotation belt 88 Liner lid 89 Slug outlet 90 Refractory furnace body 91 Preheating Chamber 92 Incineration ash reaction chamber 93 Heating chamber 94 Combustion gas exhaust port 95 Refractory lid 96 Microwave heating device or induction heating device 100 Waste input port 101 Waste input pusher 101a Extrusion port 101b, 102a Inlet 101e Supporting material 101g Sliding Shaft 101h Bearing 101i Frame 102 Thermit agent injection pusher 102b Outlet 103 Support frame 104 Melt slag discharge temperature sensor 105 Furnace pressure sensor 106 Melting temperature sensor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F23J 1/08 F23J 1/08

Claims (12)

[Claims] 1. A furnace chamber formed inside a furnace body, a melting unit disposed inside the furnace chamber, a waste supply unit for supplying powdery and granular waste to the melting unit, A waste melting furnace, comprising: a thermite agent supply unit for supplying a granular thermite agent to a melting unit; and a melt slag discharge unit disposed downstream of the melting unit in the furnace chamber. . 2. The apparatus according to claim 1, further comprising a weir portion disposed between the melting unit and the molten slag discharge unit to temporarily block the molten slag to form a molten slag pool. Waste melting furnace. 3. The waste supply section formed or disposed on the upstream side, downstream side, or side of the melting section of the furnace chamber, and is formed in an opening shape on a floor section on the downstream side of the melting section of the furnace chamber. And the waste slag discharge section provided, and the waste supply section is formed by a supply pipe, or has a floor continuous with the melt section and has a central supply communicating with the melt section. Department and
A pair of side supply chambers disposed on both sides of the central supply section and / or the melting section of the furnace chamber and having a floor inclined downward toward the furnace chamber and connected to the furnace chamber; A pair of partition walls disposed on a ceiling portion of the furnace chamber and separating the furnace chamber and the side supply chamber; a gap formed at a lower end of the partition wall in a gap shape; A central supply pipe extending through the central supply section of the furnace chamber, the central supply pipe being provided so as to be inserted into the ceiling of the central supply section, and a central supply pipe extending through the central supply section of the furnace chamber. The waste melting furnace according to claim 1, further comprising: the provided thermite agent supply unit. 4. The partition wall is vertically disposed on a ceiling of the furnace chamber so as to expand and contract a gap between the supply passages.
4. The waste melting furnace according to claim 3, wherein the partition wall has a notch at a lower end on an upstream side of the melting unit. 5. 5. The furnace body is formed so that the downstream side is lowered, or is fixed to a furnace base so that the inclination angle can be changed freely.
And / or a cooling unit for cooling the outside of the furnace wall, which forms the furnace chamber shell, from the side to the outside of the floor, and / or the molten slag discharge unit is formed in an eaves-like shape on the upstream side of the furnace chamber. The waste melting furnace according to any one of claims 1 to 4, further comprising an open edge portion. 6. A waste melting furnace according to any one of claims 1 to 5, and one or more of: a waste melting furnace disposed above the waste supply unit and supplying the waste to the waste supply unit. A waste input pipe, a waste storage unit that stores waste, and a waste transport feeder that communicates with the waste storage unit and the waste input pipe to transport waste, the thermite agent A supply unit configured to supply the thermite agent supply pipe from the thermite agent supply tube; A waste melting apparatus, comprising: a thermite agent feeder for adjusting a flow rate of the thermite agent. 7. A waste input pusher which communicates with the waste input pipe and the waste supply section and pushes waste supplied to the waste input pipe to the waste supply section. The waste melting apparatus according to claim 6, characterized in that: 8. A thermite agent temporary storage section provided at an inlet of the thermite agent input feeder, and a thermite agent input pusher for pushing the thermite agent from the thermite agent storage section to the thermite agent temporary storage section. The waste melting device according to claim 6 or 7, further comprising: 9. A level sensor disposed at an upper end portion of the waste input pipe for detecting a level of waste disposed in the waste input pipe, and wherein the level sensor detects waste in the waste input pipe. The waste melting apparatus according to any one of claims 6 to 8, further comprising: a transport control unit configured to stop transport of the waste transport feeder when it detects that the waste has been filled. 10. The apparatus according to claim 1, further comprising: a vibrator for vibrating the waste input pipe disposed on the waste input pipe, and / or a damper for opening and closing the thermite agent input pipe. Item 10. The waste melting apparatus according to any one of Items 6 to 9. 11. The secondary combustion furnace, comprising: the waste melting furnace according to claim 1; and a secondary combustion furnace connected to a lower part of the waste melting furnace. A furnace, a secondary combustion chamber formed in the furnace, a slag input port formed in a ceiling of the secondary combustion chamber and communicating with the molten slag discharge section, and a slag input port of the secondary combustion chamber. , A discharge port formed on a side wall of the secondary combustion chamber, and a secondary combustion formed at a position facing the discharge port on the side wall of the secondary combustion chamber. And a burner. 12. An ash removing device communicating with the exhaust port of the secondary combustion chamber to remove ash from exhaust gas from the secondary combustion chamber, and a heat exchanger cooling the exhaust gas passing through the ash removing device. The waste melting device according to claim 11, further comprising: a dust removal device configured to remove dust from the exhaust gas passing through the heat exchanger.