JP3510511B2 - Incinerator - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to general garbage,
The present invention relates to an incinerator that incinerates combustible or chemical waste such as rice husks, paper, cardboard, styrofoam, and vinyl chloride.

[0002]

2. Description of the Related Art This type of incinerator that has been conventionally used forms one combustion chamber in the furnace body, and combustible or chemical waste such as rice husk, paper, Styrofoam, and vinyl chloride. Since it is put into one of the combustion chambers at a time to incinerate, the combustion efficiency is poor, it is not possible to completely burn it, and chemical gases harmful to the human body such as dioxins are released to the outside, Incomplete combustion may be treated as residual ash.

By the way, dioxin is the most toxic substance among chemical substances, and even if it is a very small amount, it has a great effect on the human body, and it is the refuse incinerator that discharges it most. When dioxin is incinerated at a temperature of 800 ° C. or less, incomplete combustion is likely to occur, and carbon generated from general trash and chlorine generated from vinyl chloride or the like are combined to generate dioxin. In addition, the electric dust collectors installed in many refuse incinerators to prevent pollution are operated at around 300 ° C. where dust is easily collected, but this temperature is the temperature at which dioxin is most likely to be generated. For this reason,
When using a refuse incinerator, the temperature of the incinerator should be 800 ° C or higher, where dust is easily burned, and the temperature of the dust collector that prevents the generation of dioxins should be 200 ° C or lower.
Mandatory by law.

In the conventional incinerator, as described above, general waste and industrial waste are put into a single combustion chamber in the furnace body at a time and burned at once to be incinerated. It was bad, it was difficult to completely burn, and there was a risk of generating harmful gases such as dioxins. Further, even in an incinerator equipped with an electric dust collector, it is extremely difficult to set the operating temperature of the dust collector to 200 ° C. or lower at which the generation of dioxin can be suppressed, and it has not been a basic prevention measure. Moreover, in a conventional incinerator, after burning waste at a high temperature in a single combustion chamber at a high temperature, it is cooled to 200 ° C by a cooling device and a dust collector.
Since the dust is rapidly cooled down to remove dust, the equipment cost of the cooling device and the dust collector is very high.

The present invention has been made in view of the above problems and is capable of completely burning waste in a combustion chamber, and the smoke produced by the combustion is odorless and smokeless.
It is an object of the present invention to provide an incinerator that can be processed into a gas state of 0 ° C or lower.

[0006]

The incinerator of the invention according to claim 1 has a furnace body 4 made of a refractory material, and a primary combustion chamber 1 for burning waste and a discharge from the primary combustion chamber 1. A secondary combustion chamber 2 that burns flue gas and a tertiary combustion chamber 3 that burns flue gas discharged from the secondary combustion chamber 2 are sequentially connected in an upwardly stepwise manner, and in front of the tertiary combustion chamber 3, A flue gas duct 10 equipped with a wet dust removing device 30 is provided in series with a cooling chamber 7 provided with a heat exchanger for cooling the flue gas from the tertiary combustion chamber 3 by heat exchange with water. It is characterized by being connected in series.

According to a second aspect of the present invention, in the incinerator according to the first aspect, the primary combustion chamber 1 is provided with a first waste supply device 14 for pushing waste by a pusher 14d to supply the waste, and the secondary combustion chamber 2 Is provided with a second waste supply device 15 for supplying waste by blowing it with a blower 15d.

A third aspect of the incinerator according to the first or second aspect is that the cooling chamber 7 includes a primary cooling chamber 7a having a heat exchanger 8 for supplying steam and a heat exchanger 9 for supplying hot water. It is characterized by comprising a secondary cooling chamber 7b.

According to a fourth aspect of the present invention, in the incinerator according to any of the first to third aspects, the wet dust removing device 30 has a plurality of baffles 34 for removing dust arranged in multiple stages and water is directed to the smoke exhaust. And a drain 36 for receiving drainage flowing down through the baffle plate 34. The drain 36 of the dust removing device 30 is connected to the inlet of the filtering device 37 and the outlet thereof is circulated for water supply. It is characterized in that it is connected to the injection pipe 35 via a pump 39.

According to a fifth aspect of the present invention, in the incinerator according to the fourth aspect, the drainage from the drain 36 is neutralized with an antioxidant or the like between the drain 36 of the wet dust remover 30 and the inlet of the filter 37. It is characterized in that a septic tank 42 for purifying by the addition of the agent is provided.

[0011]

1 is a sectional view showing the overall structure of an incinerator according to the present invention, FIG. 2 is a substantially lower half of FIG. 1, and FIG. 3 is a substantially upper side of FIG. It is the figure which expanded each half. In these figures, 4 is a furnace body made of refractory material, which is a primary combustion chamber 1 for burning waste.
And a secondary combustion chamber 2 for burning the smoke emitted from the primary combustion chamber 1 and a tertiary combustion chamber 3 for burning the smoke emitted from the secondary combustion chamber 2. , 3
Between each other, that is, between the primary combustion chamber 1 and the secondary combustion chamber 2,
Wide communication ports 5 and 6 are formed between the secondary combustion chamber 2 and the tertiary combustion chamber 3, respectively.

In front of the tertiary combustion chamber 3, there is provided a cooling chamber 7 for cooling the smoke emitted from the tertiary combustion chamber 3 by exchanging heat with water. The cooling chamber 7 includes a heat exchanger 8 for supplying steam.
And a secondary cooling chamber 7b having a heat exchanger 9 for supplying hot water. The primary cooling chamber 7a
Is adjacent to the tertiary combustion chamber 3, and the secondary cooling chamber 7b is adjacent to the primary cooling chamber 7a and is located on the front side thereof. Also, the cooling chamber 7
A smoke exhaust duct 10 is connected to the end of the smoke exhaust duct 10, and a vertically extending chimney 11 is connected to the tip end side of the smoke exhaust duct 10.

A grate 12 is provided at the bottom of the primary combustion chamber 1 formed in the furnace body 4, and a large number of breathing holes 13 are provided around the grate 12. Further, a pusher-type first waste supply device 14 is provided in a required portion of the primary combustion chamber 1, and a blast-type second waste supply device 15 is provided in the secondary combustion chamber 2 and is made of vinyl chloride. Chemical industrial waste such as waste materials and styrofoam waste materials,
The first waste supply device 14 supplies the primary combustion chamber 1, and the industrial waste having good combustibility such as rice husks, paper, and corrugated cardboard is supplied to the secondary combustion chamber 2 by the second waste supply device 15. .

As can be seen from FIG. 2, the first waste supply device 14 includes a hopper 14a, a supply pipe 14b connected to the inside of the primary combustion chamber 1 from the lower end of the hopper 14a, and a hopper 14.
A pusher 14d that pushes the waste material supplied from a through the supply pipe 14b through the supply port 14c onto the rostrut 12.
A crushing device 16 for crushing waste is provided above the hopper 14a. Second waste supply device 15
The tank 15a for storing waste, the conveyor 15b for transferring the waste in the tank 15a to the supply port 15c of the secondary combustion chamber 2, and the waste transferred by the conveyor 15b by the blowing pressure from the supply port 15c. The tank 15a is provided with a crushing device 17 for crushing waste, which is composed of a blower 15d for blowing into the next combustion chamber 2.

In the primary combustion chamber 1, the first waste supply device 1
4 is provided with a combustion burner 18 and a blower 19 for introducing air, and the secondary combustion chamber 2 is provided with a combustion burner 20 and a blower 21 for introducing air in the opposite side of the second waste supply device 15. The tertiary combustion chamber 3 is also provided with a similar combustion burner 22 and a blower 23 for introducing air. A temperature of 900 ° C. or higher is secured in the primary combustion chamber 1, and a temperature of 1000 ° C. or higher is secured in the secondary combustion chamber 2 and the tertiary combustion chamber 3.

As can be seen from FIG. 3, a cooling chamber 7 is formed in front of the tertiary combustion chamber 3 by a part of the furnace body 4, and the cooling chamber 7 is divided by the partition wall 24 into a primary cooling chamber 7a and a secondary cooling chamber. It is divided into a chamber 7b. Primary cooling chamber 7a
Inside, there is provided a steam supply heat exchanger 8 comprising a heat exchange pipe 8a formed in a meandering or spiral shape,
When the water supplied from the water supply pipe 25 flows through the heat exchange pipe 8a, the flue gas of about 1000 ° C. discharged from the tertiary combustion chamber 3 exchanges heat with the water, for example, 80%.
It is cooled to about 0 ° C. On the other hand, the water flowing through the heat exchange pipe 8a is vaporized by heat exchange with the high temperature flue gas, drives the turbine 26 connected to this pipe 8a, and extracts electric energy from the generator 27 directly connected to this. It is possible to supply electricity to a required power source through the electric wire a.

Further, in the secondary cooling chamber 7b, a hot water supply heat exchanger 9 composed of a heat exchange pipe 9a formed in a meandering or spiral shape is provided and supplied from a water supply pipe 28. By the water flowing through the heat exchange pipe 9a,
The flue gas cooled to about 800 ° C. in the primary cooling chamber 7a exchanges heat with water and cooled to about 600 ° C., for example. On the other hand, the water flowing through the heat exchange pipe 9a is heated by the heat exchange with the flue gas of about 600 ° C. to become hot water, which is heated by the pump 29 through a plurality of distribution pipes b, b '. Etc. will be distributed and supplied.

Further, as shown in FIG. 3, the smoke exhaust duct 10
Is formed in a two-step shape of a lower duct 10a and an upper duct 10b, and a wet dust removing device 30 is provided inside each of the ducts 10a and 10b, which will be described later. The tip of the upper duct 10b communicates with the chimney 11 via an induction blower 31, and an exhaust pipe 32 branches from the chimney 11 as shown in FIG.
2 is further branched into a plurality of distribution pipes c and c '. Figure 1
Reference numeral 33 indicates a blower.

As shown in FIG. 3, the wet dust removing apparatus 30 includes a plurality of dust removing baffles 34 arranged in multiple stages, an annular injection pipe 35 for injecting water toward smoke exhaust, and And a drain 36 for receiving drainage flowing down through the baffle plate 34. The lower-stage duct 10a and the upper-stage duct 10
They are provided in upper and lower two stages inside b. The outlet pipe 38 of the filtration device 37 is connected to the injection pipe 35 of each wet dust removing device 30.
Water pipe 40 connected from the water via a circulating water pump 39
One end of the wet dust removing device 30 is connected to the drain 36 of each wet dust removing device 30.
Is a septic tank 42 for adding an antioxidant through a drain pipe 41.
It is connected to the. The septic tank 42 is above the filtering device 37, and as shown in FIG.
Is connected to. This septic tank 42 is for each drain 3
The wastewater from 6 is once stored, and an appropriate amount of an antioxidant (neutralizing agent) is added to the wastewater to purify it.
It is designed to be filtered by 7.

By the driving of the circulating water pump 39, the water filtered by the filtering device 37 is supplied to the injection pipe 35 of each wet dust removing device 30 via the water supply pipe 40, and is jetted downward from each injection pipe 35. The water that has been collected and collected in each drain 36 is returned to the septic tank 42 through each drain pipe 41, and the purified water to which the antioxidant has been added is filtered by the filter device 37 and is recycled for reuse. The septic tank 42 is replenished with new water as needed, and the replenishment is performed by the replenishment pipe 44 and the on-off valve 45 shown in FIG.

The filtering device 37, as shown in FIG.
An index station 47 having a plurality of rotary dewatering filters 46 arranged in the circumferential direction is arranged in a plurality of upper and lower stages, for example, three stages. Although not shown, each rotary dewatering filter 46 is omitted. A mesh-shaped filter is formed on the peripheral wall of the filter 46. By draining water into the filter 46 and rotating the filter at a high speed, water is separated by the centrifugal force, and residual ash is taken out from the bottom and passed through the drain pipe 48 to be described later. Second
The ash is received on the ash receiving conveyor 51. In addition, when one filter 46 of each stage is filled with drainage,
The index station 47 is rotated so that the next filter 46 is drained.

As shown in FIGS. 1 to 3, the smoke exhaust duct 10
A hopper 49 for receiving ash and overflow water discharged from each wet dust remover 30 is provided at the lower ends of the lower duct 10a and the upper duct 10b, respectively.
0 is discharged to the lower second ash receiving conveyor 51, and overflow water is sent to the septic tank 42 by the discharge pipe 52 for purification and reuse. A hopper 53 for collecting ash is also provided below the tertiary combustion chamber 3 and the cooling chamber 7, and the ash collected in this is discharged to the ash receiving conveyor 51 by an ash discharge pipe 54. Has become.

Further, as shown in FIGS. 1 and 2, the furnace body 4
In the lower part of the primary combustion chamber 1, a first ash receiving conveyor 55 is provided. The first ash receiving conveyor 55 receives the ash discharged from the primary combustion chamber 1 or the secondary combustion chamber 2 and receives the ash input hopper. It is designed to discharge to 56. The second ash receiving conveyor 51 installed below the wet dust remover 30 receives the ash discharged from the tertiary combustion chamber 3 and each wet dust remover 30 through the ash discharge pipes 50 and 54, and receives the ash. The material is discharged to the input hopper 56. The ash thus collected in the ash charging hopper 56 is baked and solidified by the ceramization processing device 57 to be a finely reduced solid material harmless to the human body, that is, ceramic.

The ceramization treatment device 57 comprises a primary treatment device 57a and a secondary treatment device 57b connected to the primary treatment device 57a. Combustion burners 58, 59 are provided in the respective treatment devices 57a, 57b. , Primary processing unit 5
The combustion temperature of about 1000 ° C. is secured in 7a, and the combustion temperature of 1350 ° C. is secured in the secondary treatment device 44b. The ceramic that has been ceramized by the ceramization processing device 57 is a ceramic stocker (collection tank) 60.
It is supposed to be collected at.

In this ceramization processing device 57, as shown in FIG.
And, as shown in FIG. 2, by introducing the exhaust gas in the primary treatment device 57b into the exhaust gas recovery pipe 61 and supplying it to the primary combustion chamber 1 of the furnace body 4 by the blower 62, the combustion temperature in the primary combustion chamber 1 is increased. It can be effectively increased. Further, in this case, as shown in the figure, the exhaust gas recirculation path 63 is drawn from the tip of the duct 10b and connected to the exhaust gas recovery pipe 61, so that the exhaust gas from the tip of the duct 10b is reused as combustion gas. You can

Next, the operation of the incinerator having the above-described structure will be described.

First, when incinerating construction industrial waste, chemical industrial waste such as vinyl chloride and styrofoam, this waste is supplied into the primary combustion chamber 1 by the first waste supply device 14, and this primary combustion chamber is supplied. Make sure to burn it at 1. Further, when incinerating a highly combustible waste such as rice husks, paper, corrugated cardboard, etc., this waste is supplied into the secondary combustion chamber 2 by the second waste supply device 15, and the combustion air is supplied by the blowing pressure. Blow up with it to increase combustion efficiency.

The waste material supplied to the primary combustion chamber 1 is combusted at a temperature of 900 ° C. or higher by a combustion burner 18 and a blower 19 to be sufficiently incinerated, and the flue gas is emitted from the secondary combustion chamber 2
Ascends to the ash receiving conveyor 55 below through the gap between the roastles 12. Flue gas that has risen from the primary combustion chamber 1 to the secondary combustion chamber 2 or the waste that is directly supplied to the secondary combustion chamber 2 is sufficiently burned at a temperature of 1000 ° C. or higher by the combustion burner 20 and the blower 21. , To the tertiary combustion chamber 3, and the ash is discharged onto the ash receiving conveyor 55 in the same manner as above. The flue gas that has entered the tertiary combustion chamber 3 is further burned by the combustion burner 18 and the blower 19 at a temperature of 1000 ° C. or higher in the same manner as the secondary combustion chamber 2, and then enters the cooling chamber 7, and the ash enters the hopper 53. It is collected and discharged from the ash discharge pipe 54 onto the ash receiving conveyor 51.

Primary combustion chamber 7 from tertiary combustion chamber 3 to cooling chamber 7
The flue gas of about 1000 ° C. that has entered a is cooled to, for example, about 800 ° C. by the steam supply heat exchanger 8 including the heat exchange pipe 8a through which water flows. On the other hand, the water that flows through the heat exchange pipe 8a is vaporized and the turbine 26
Can be driven to extract electric energy from the generator 27.

The flue gas cooled to about 800 ° C. in the primary cooling chamber 7a is heated in the secondary cooling chamber 7b by the hot water supply heat exchanger 9 consisting of a heat exchange pipe 9a through which water flows. It is replaced and cooled to, for example, about 600 ° C. On the other hand, the water flowing through the heat exchange pipe 9a is
It is heated by heat exchange with flue gas at about 00 ° C to become hot water, which can be directly used for hot water pools, heating facilities, hot spring recreation facilities, and the like.

In burning the waste in the primary combustion chamber 1 to the tertiary combustion chamber 3, combustible or combustible waste such as rice husks, paper and corrugated cardboard is sent to the secondary combustion chamber 2 together with air by the blowing pressure. Since it is blown in, it has high combustion efficiency and can be effectively burned. Also, chemical industrial waste such as vinyl chloride is burned in the primary combustion chamber 1 by supplying it to the primary combustion chamber 1. The flue gas generated and discharged is sequentially passed through the secondary combustion chamber 2 and the tertiary combustion chamber 3
Since it is burned at a temperature of 00 ° C or higher, substances such as dioxins that are harmful to the human body can be incinerated and removed in a short time.

Further, since the primary combustion chamber 1 to the tertiary combustion chamber 3 are successively connected in a stepwise manner upward, the flue gas burned in the primary combustion chamber 1 is transferred from the primary combustion chamber 1 to the secondary combustion chamber. It does not pass straight through the secondary combustion chamber 2 and the tertiary combustion chamber 3 and first flows into the secondary combustion chamber 2 in a swirling manner by colliding with the upper wall surface and the side wall surface of the primary combustion chamber 1, and then discharged into the secondary combustion chamber 2 at a stroke. The smoke discharged into the secondary combustion chamber 2 also flows in a spiral shape by hitting the upper wall surface and side wall surface of the same, and then discharged into the tertiary combustion chamber 3 at once, and the smoke exhausted in the tertiary combustion chamber 3 is also the same. Then, it flows in a spiral shape. In this way, the smoke exhausted in the primary combustion chamber 1 flows while circumventing the stepwise primary combustion chamber 1 to tertiary combustion chamber 3 in sequence, and the same flow state is sufficient in each combustion chamber 1, 2, 3. In addition, since it is reliably burned, it has a very high burning efficiency and can be burned completely to completely incinerate substances harmful to the human body such as dioxins.

Further, since the smoke discharged from the tertiary combustion chamber 3 is cooled by passing through the cooling chamber 7 as described above, it is possible to introduce the smoke into the wet dust removing device 30 at a relatively low temperature. it can. Moreover, the primary cooling chamber 7a of the cooling chamber 7
Then, the water flowing through the heat exchanging pipe 8a becomes the tertiary combustion chamber 3
In order to efficiently turn it into steam by exchanging heat with the smoke emitted from the turbine, the steam drives the turbine 26 and
It is possible to take out electric energy from 7 and supply electricity to a required power source through the electric wire a. Further, since the temperature of the secondary cooling chamber 7b is lower than that of the primary cooling chamber 7a, the water flowing through the heat exchange pipe 9a becomes hot water by heat exchange with the smoke exhausted from the primary cooling chamber 7a, and the hot water is The distribution pipes b, b'can be used to directly feed the hot water pool, heating equipment, fountain, hot spring entertainment facility, etc.

For example, 6 out of the secondary cooling chamber 7b of the cooling chamber 7
The flue gas of about 00 ° C. is the lower duct 1 of the flue gas duct 10.
0a passes through the upper duct 10b but passes through the lower duct 10a, and the flue gas comes in contact with the multistage dust removing baffle plates 34 of the wet dust removers 30 provided in the upper and lower stages to form a meandering shape. The soot and smoke contained in the flue gas by contacting the spray water sprayed from each spray pipe 35 during the ascending
Particles such as dust are adsorbed. The wastewater having the particles adsorbed flows down through the dust removing baffle plate 34, etc.
The waste water collected in each drain 36 is collected in the septic tank 42 through each drain pipe 41.

Thus, the exhaust gas having passed through the wet dust removing device 30 in the lower duct 10a and adsorbed and removed particles of soot, dust, etc., continues to be provided in the upper duct 10b in two stages, upper and lower. The wet dust remover 3 in the lower duct 10a by passing through the wet dust remover 30
Particles such as soot and dust that could not be removed at 0 are completely adsorbed and removed by the same filter action as above, and the drainage with adsorbed particles is collected in each drain 36 in the same manner as above, and is passed through each drain pipe 41 to the septic tank. 42.

As described above, the cooling chamber 7 to the smoke exhaust duct 10
For example, the smoke exhaust of 600 ° C. entering the side is the smoke exhaust duct 10
By passing through the wet dust remover 30 inside, the particles of soot, dust, etc. are completely adsorbed and removed to become odorless and smokeless exhaust gas, and at the same time, generation of dioxins is suppressed.
It will be cooled to a temperature below ℃. Then, this odorless and smokeless gas at 200 ° C. or lower is, as shown in FIG.
It is sent to the chimney 11 by the induction blower 31 at the tip of the upper duct 10b and is discharged from the chimney 11 to the outside.
Further, the exhaust gas passing through the exhaust pipe 32 branched from the chimney 11 can be supplied to a house farm, a warm water pool or the like through a plurality of distribution pipes c and c'and used as a heat source.

On the other hand, the ash discharged during combustion in the primary combustion chamber 1 to the tertiary combustion chamber 3 of the furnace body 4, and the wet dust removing device 30 in the cooling chamber 7 and the smoke exhaust duct 10 from the furnace body 4 The discharged ash is discharged onto the ash receiving conveyor 55 below through the roast 12 and the ash discharging pipes 50, 5
The ash receiving hopper 5 is discharged from the ash receiving conveyors 51 and 55 through the ash receiving conveyor 51 and 55.
Collected in 6. Then, the ash collected in the ash input hopper 56 is heated to about 1000 ° C. by the primary treatment device 57a of the ceramization treatment device 57, and further the secondary treatment device 5 is heated.
By heating to about 1350 ° C. in 7b, it is baked and solidified into a finely reduced solid body harmless to the human body, that is, ceramic. By converting the residual ash into a ceramic in this way, it is possible to wrap substances that are harmful to the human body, such as dioxins. This ceramic is recovered in a ceramic stocker (recovery tank) 60.

[0038]

According to the incinerator of the invention according to claim 1,
Since the waste is burned three times by the primary to tertiary combustion chambers, it is possible to completely burn even the incombustible. Further, in this incinerator, the primary combustion chamber, the secondary combustion chamber, and the tertiary combustion chamber are sequentially connected in an upwardly stepped manner, so that the flue gas in the primary combustion chamber is discharged from the primary combustion chamber to the secondary combustion chamber. The combustion efficiency does not pass straight through the tertiary combustion chamber, and the primary combustion chamber to the tertiary combustion chamber are flowed in a spiral detour in order, and each combustion chamber is sufficiently combusted in the same flow state. It is highly expensive and can burn completely, and can completely incinerate substances harmful to the human body such as dioxins.

Further, since the wet dust removing device is provided in the smoke exhaust duct, particles such as soot and dust contained in the exhaust gas discharged from the combustion chamber can be reliably removed and recovered, and dioxins and the like can be obtained. No harmful substances are discharged to the outside, and the temperature of the exhaust gas discharged from the incinerator can be lowered to 200 ° C. or less at which the generation of dioxin can be suppressed by this wet dust removing device.

Further, since the cooling chamber is provided between the tertiary combustion chamber and the smoke exhaust duct to cool the exhaust gas from the tertiary combustion chamber by heat exchange with water, the wet dust remover for the smoke exhaust duct has Flue gas can be introduced at a relatively low temperature. In other words, it is not necessary to rapidly cool the flue gas discharged from the tertiary combustion chamber and having a temperature of 1000 ° C. or higher to 200 ° C. or lower where generation of dioxin can be suppressed in the wet dust remover, and therefore the wet dust remover can be easily configured. Moreover, in this case, since the water for heat exchange is vaporized or heated by the exhaust gas, the steam or hot water can be effectively used.

According to the second aspect of the present invention, the first combustion chamber is provided with the first waste supply device for pushing and supplying the waste by pushing with the pusher, and the secondary combustion chamber is fed with the waste by blowing with the blower. Since the second waste supply device is provided, combustible or combustible waste such as rice husks, paper, and corrugated cardboard is blown into the secondary combustion chamber by the second waste supply device together with air by the blowing pressure. By doing so, the combustion efficiency is high and the combustion can be effectively performed.
Chemical industrial waste such as vinyl chloride is supplied to the primary combustion chamber, and the flue gas that is burned and discharged in the primary combustion chamber is passed through the secondary combustion chamber and the tertiary combustion chamber sequentially to reach 1000 ° C or higher. By burning, substances that are harmful to the human body, such as dioxins, can be incinerated and removed in a short time.

According to the third aspect, the cooling chamber comprises the primary cooling chamber having the heat exchanger for supplying steam and the secondary cooling chamber having the heat exchanger for supplying hot water. In the chamber, the water flowing through the heat exchange device can be efficiently vaporized by heat exchange with the flue gas from the tertiary combustion chamber, and the steam can drive the turbine to extract electrical energy from the generator. it can. In addition, the secondary cooling chamber,
Since the temperature is lower than in the primary cooling room, the water flowing through the heat exchanger is heated by heat exchange with the smoke exhausted from the primary cooling room and used directly in hot water pools, heating facilities, fountains, hot spring recreation facilities, etc. can do.

According to a fourth aspect of the present invention, in a wet dust collecting apparatus, a plurality of baffles for dust removal arranged in multiple stages, an injection pipe for injecting water toward smoke exhaust, and a baffle plate flow down. It consists of a drain that receives wastewater, and the drain of this dust collector is connected to the inlet of the filter and its outlet is connected to the injection pipe via a circulating water pump, so the smoke exhaust duct from the cooling chamber Particles such as soot and dust inside can be adsorbed and removed, and the temperature of the exhaust gas from the cooling chamber can be effectively lowered to 200 ° C or lower where the generation of dioxins can be suppressed, and the wastewater is filtered by a filter device. Then, it can be recycled and reused.

According to the fifth aspect, a septic tank for purifying the wastewater from the drain by adding a neutralizing agent such as an antioxidant is provided between the drain of the wet dust collector and the inlet of the filter. As a result, it is possible to effectively perform the filtering action of the waste water in the filtering device.

[Brief description of drawings]

FIG. 1 is a sectional view showing the overall structure of an incinerator according to the present invention.

FIG. 2 is an enlarged sectional view showing a substantially lower half of FIG.

FIG. 3 is an enlarged cross-sectional view showing a substantially upper half of FIG.

[Explanation of symbols]

1 Primary combustion chamber 2 Secondary combustion chamber 3 tertiary combustion chamber 4 furnace body 7 Cooling chamber 7a Primary cooling chamber 7b Secondary cooling chamber 8 Steam supply heat exchanger 9 Heat exchanger for hot water supply 10 smoke exhaust duct 11 chimney 14 First waste supply device 15 Second waste supply device 30 Wet dust remover 34 Baffle for dust removal 35 injection pipe 36 drain 37 Filtration device 39 Circulating water pump 42 septic tank

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Claims (5)

(57) [Claims] 1. A primary combustion chamber for burning waste, a secondary combustion chamber for burning flue gas discharged from the primary combustion chamber, and a secondary combustion chamber for discharging smoke discharged from the primary combustion chamber into a furnace body made of refractory material. A tertiary combustion chamber that burns flue gas is sequentially connected in an upward direction in a stepwise manner, and a heat exchanger that cools the flue gas from the tertiary combustion chamber by exchanging heat with water is provided in front of the tertiary combustion chamber. An incinerator in which a cooling chamber is connected in series, and a smoke exhaust duct equipped with a wet dust collector is connected in front of this cooling chamber. 2. The primary combustion chamber is provided with a first waste supply device for pushing waste by a pusher to supply the waste, and the secondary combustion chamber is provided with a second waste supply for blowing waste to be supplied by a blower. The incinerator according to claim 1, further comprising a device. 3. The incinerator according to claim 1, wherein the cooling chamber comprises a primary cooling chamber having a heat exchanger for supplying steam and a secondary cooling chamber having a heat exchanger for supplying hot water. 4. A wet dust collector comprises a plurality of baffles for dust removal arranged in multiple stages, an injection pipe for injecting water toward smoke exhaust, and a drain for receiving drainage flowing down through the baffle. The incinerator according to any one of claims 1 to 3, wherein the drain of the dust collector is connected to the inlet of the filter and the outlet is connected to the injection pipe via a circulating water pump. Furnace. 5. A septic tank for purifying the wastewater from the drain by adding a neutralizing agent such as an antioxidant is provided between the drain of the wet dust collector and the inlet of the filter.
Incinerator described in.