JP2012013315A - Refuse incineration equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively inhibit external leakage of a malodor in a refuse pit while employing a simple structure, and to efficiently incinerate refuse by increasing thermal efficiency of an incinerator to reduce fuel consumption of the incinerator.SOLUTION: The refuse incineration equipment includes: the refuse pit 1 in which a refuse charging opening 13 is opened; the incinerator 2 for incinerating the refuse fed from the refuse pit 1; and a suction duct 3 for sucking in air in the refuse pit 1 as combustion air to supply it to the incinerator 2. In the refuse incineration equipment, a heat exchanger 4 heated by waste heat of the incinerator 2 to warm the air in the refuse pit 1 is disposed in the upper part of the refuse pit 1. In the suction duct 3, a suction port 32 for sucking in the air in the refuse pit 1 is disposed in the upper part of the refuse pit 1, to suck in the air, warmed by the heat exchanger 4, in the upper part of the refuse pit 1 and supply the warmed air to the incinerator 2. Additionally, the refuse charging opening 13 is opened in the lateral wall 12 of the refuse pit 1, and disposed below the suction port 32 of the suction duct 3.

Description

  The present invention relates to a garbage incineration facility that incinerates and exhausts bad odor by using air containing bad odor in a garbage pit for storing garbage to be incinerated as combustion air used for incineration of garbage. .

  Garbage that is incinerated and disposed of is a mixture of organic matter such as raw garbage, plastic, and wood. Garbage contained in garbage can cause bad odor. Therefore, in the garbage incineration facility that incinerates and disposes garbage including raw garbage, if the garbage pit is filled with bad odor and the air in the garbage pit leaks to the outside, it becomes a cause of bad odor. In addition, the bad odor of the garbage pit also causes the working environment of the garbage incineration site to be remarkably deteriorated. This harmful effect is that the air in the garbage pit can be used as combustion air in the incinerator and incinerated in the incinerator to treat malodors. The garbage incineration facility having this structure can prevent the dust pit air from leaking outside by sucking the air in the dust pit so that the internal pressure of the dust pit is lower than the outside air.

  However, it is difficult for the above-mentioned garbage incineration facilities to prevent air leaks from the garbage pit and reliably prevent bad odors from leaking to the outside. In particular, garbage incineration equipment does not always incinerate a certain amount of garbage, and the amount of garbage incinerated fluctuates, and the amount of generated heat fluctuates, so the amount of air consumed to incinerate garbage, that is, The combustion air drawn from the garbage pit also fluctuates. In this state, for example, if the amount of combustion air decreases and the amount of suction from the dust pits decreases, a bad odor that leaks from the dust pits to the outside occurs.

Waste incineration equipment has also been developed to prevent this harmful effect. (See Patent Document 1)
The waste incineration facility described in Patent Document 1 includes a supply air amount detection mechanism for detecting the amount of combustion air supplied to the incinerator from the combustion air introduction path, and a deodorization release for deodorizing and exhausting the dust pit air. A storage means is provided for storing the air amount required to suck the air in the pit from the road and the dust pit and maintain the inside of the pit in a negative pressure state. This garbage incineration facility discharges air from the dust pit through the deodorization discharge path, which is the difference in the amount of combustion air detected by the air amount detection mechanism from the amount of suction air required to maintain the dust pit at a negative pressure. . In other words, this garbage incineration facility always controls the inside of the garbage pit to a constant negative pressure to prevent the leakage of bad odors in the garbage pit.

JP-A-8-159435

  The above garbage incineration facilities need to be provided with a deodorization discharge path for deodorizing and exhausting the air in the garbage pit, which not only complicates the equipment, but also increases the garbage pit depending on the amount of opening of the inlet for introducing garbage into the garbage pit. The amount of air required to keep the inside at a constant negative pressure fluctuates, and when the inlet is opened widely or when multiple inlets are opened and garbage is thrown in, there is a bad odor in the garbage pit from the inlet. There is a drawback that it is not possible to effectively prevent leakage to the outside.

  The present invention has been developed for the purpose of solving the above-mentioned drawbacks. An important object of the present invention is to improve the thermal efficiency of the incinerator by making it possible to more effectively prevent external leakage of bad odors in the garbage pit while having a simple structure, and further by using warm odor air as combustion air. An object of the present invention is to provide a garbage incineration facility that can efficiently incinerate garbage by reducing fuel consumption in an incinerator.

Means for Solving the Problems and Effects of the Invention

  The garbage incineration facility of the present invention includes a garbage pit 1 having an opening 13 for refuse to be incinerated, an incinerator 2 to which the garbage in the garbage pit 1 is supplied and incinerated, and odorous air in the garbage pit 1. Is sucked in as combustion air and supplied to the incinerator 2. Further, in the garbage incineration facility, a heat exchanger 4 that is heated by the waste heat of the incinerator 2 and heats the air in the garbage pit 1 is disposed above the garbage pit 1. The suction duct 3 has a suction port 32 for sucking air in the dust pit 1 disposed above the dust pit 1, sucks the air in the upper part of the dust pit 1 heated by the heat exchanger 4 and supplies it to the incinerator 2. It has a structure to do. Further, in the garbage incineration facility, the garbage inlet 13 is opened on the side wall 12 of the garbage pit 1, and the inlet 13 is opened below the inlet 32 of the suction duct 3.

  The above-mentioned garbage incineration equipment has a simple structure, can more effectively prevent external leakage of bad odors in the garbage pit, and further, by using air with a warm odor in the garbage pit as combustion air, It has the feature that waste can be efficiently incinerated by improving thermal efficiency and reducing fuel consumption in the incinerator. The above-mentioned garbage incineration equipment has a heat exchanger that heats the air in the garbage pit heated by the heat generated by the incinerator at the top of the garbage pit, and the suction duct inlet is located at the top of the garbage pit. This is because the inlet is disposed on the side wall of the dust pit and below the inlet of the suction duct.

  Garbage incineration facilities open the slot and throw garbage into the garbage pit. Garbage is transported to a garbage truck, etc., and is thrown in from an inlet. The trash pit has a plurality of input ports so that trash can be input simultaneously from a plurality of garbage trucks. When throwing garbage from a plurality of garbage trucks, a plurality of inlets are opened. The state in which the plurality of inlets are opened widely is a state in which air in the garbage pit easily leaks from the inlet. In particular, when the flow rate at which the suction duct exhausts the air in the dust pit is small in this state, the air in the dust pit leaks to the outside from the inlet and causes a bad odor. This adverse effect can be prevented by reducing the opening area of the input port, but if the opening area of the input port is limited to be small, dust cannot be input easily. On the other hand, if you widen the inlet to make it convenient for throwing in trash, or if you open multiple inlets at the same time to increase the total opening area, it will be convenient to put in the trash, but the air in the trash pit will leak easily. It becomes a cause to disperse bad smell around.

  The garbage incineration facility of the present invention reliably prevents air leakage in the garbage pit with the unique configuration described above. An arrow A in FIG. 1 indicates the flow of air flowing in from the inlet. As indicated by the arrow A, the outside air flows into the garbage pit from the opened inlet. The temperature of the air flowing in from the inlet is lower than the air temperature in the garbage pit. This is because the air in the garbage pit is heated by a heat exchanger. The outside air flowing into the warm trash pit has a specific gravity greater than that of the air in the trash pit, and flows along the upper surface of the trash without flowing up into the trash pit. Since the air flowing along the upper surface of the garbage does not rise inside the garbage pit, it is not exhausted to the outside from the inlet.

  If the temperature of the outside air flowing in from the inlet is substantially equal to the temperature of the air in the garbage pit, the air flowing into the garbage pit from the inlet does not flow along the upper surface of the garbage, and the arrow B in the chain line in FIG. As shown in the figure, it rises inside the garbage pit and is discharged to the outside from the upper part of the inlet. For this reason, when the flow rate at which the suction duct exhausts the air in the dust pit is reduced, there is a problem that the air in the dust pit leaks to the outside through the opened inlet.

  However, the waste incineration facility of the present invention heats the air in the waste pit with a heat exchanger so that the air temperature in the waste pit is warmer than the outside air. The air is forcibly sucked at the suction port of the provided suction duct and supplied to the incinerator. For this reason, the cold outside air that flows into the garbage pit flows up along the upper surface of the garbage and flows into the interior without leaking to the outside by rising at the inflow portion. Outside air that does not rise in the garbage pit flows smoothly into the garbage pit without leaking outside from the inlet. The cold outside air that flows into the interior rises by being sucked into the air in the dust pit that is heated and raised in the dust pit, and is sucked into the suction port of the suction duct and supplied to the incinerator. In other words, the waste incineration facility shown in FIG. 1 heats up the entire air inside the waste pit to create an upward flow, so that cold air flowing into the interior along the upper surface of the waste is sucked into the upward flow. And supplied to the incinerator without leaking from the garbage pit.

  As described above, the waste incineration facility according to the present invention controls the air flow in the waste pit to an ideal state, and opens the waste pit greatly without leaking the air flowing in from the inlet to the outside. Can throw trash well. Furthermore, the above-mentioned garbage incineration equipment can prevent the air in the garbage pit from leaking from the inlet without providing an air curtain or the like at the inlet. There is a feature that air can be prevented from leaking into the garbage pit while being thrown into the garbage pit without being scattered.

  Furthermore, the above-mentioned garbage incineration equipment warms and raises the air in the garbage pit with a heat exchanger, sucks the heated air with a suction duct, and supplies it to the incinerator as combustion air. The temperature of the combustion air in the incinerator becomes high, and the thermal efficiency of incineration of garbage, that is, the feature that fuel such as heavy oil for incineration of garbage can be reduced is realized. In particular, the above garbage incineration equipment uses waste heat from the incinerator to heat the air in the garbage pits with a heat exchanger, so fuel is not consumed to heat the air in the garbage pits. It realizes both features that prevent air leakage from the inlet and improve the thermal efficiency of the incinerator to reduce fuel consumption.

  Furthermore, the above-mentioned garbage incineration equipment sucks the air in the garbage pit with a suction duct and supplies it as combustion air to the incinerator, so that odorous components such as methane gas generated in the garbage pit are burned in the incinerator, There is also a feature that can reduce the generation of malodor.

The trash incineration facility of the present invention can color the roof of the trash pit to a black color that absorbs sunlight. The above trash incineration facility uses the sun rays to heat the trash pit roof and the trash pit on the roof. As the air inside is heated, solar heat is effectively used to heat the air inside the garbage pit to prevent air leakage from the inlet, and further improve the thermal efficiency of the incinerator to reduce fuel consumption. Realize the features you can. In particular, since the roof of the garbage pit is heated with sunlight, the air in the upper part of the garbage pit can be heated more effectively.

In the garbage incineration facility of the present invention, the roof of the garbage pit can be inclined upward toward the suction port of the suction duct.
In the above garbage incineration equipment, the roof is inclined upward toward the suction port, so the suction duct suction port efficiently sucks the most warmed air in the dust pit and creates combustion air. Can be supplied to the incinerator. For this reason, the air trash pit air can be sucked smoothly and the temperature of the combustion air can be increased to increase the thermal efficiency of the incinerator.

In the garbage incineration facility of the present invention, the heat exchanger can be connected to the chimney of the incinerator and heated with exhaust gas.
The above garbage incineration equipment can effectively heat the heat exchanger with the waste heat of the chimney of the incinerator to heat the air in the garbage pit. For this reason, while lowering the temperature of the exhaust gas exhausted from the chimney, the temperature of the heat exchanger is increased to raise the temperature of the air in the garbage pit to a high temperature, thereby reliably preventing air leakage from the inlet. Also, the temperature of the combustion air can be increased to increase the thermal efficiency of the incinerator.

The garbage incineration facility of the present invention can heat a heat exchanger with steam or hot water heated in an incinerator.
Since the waste incineration equipment described above uses waste heat from the incinerator to heat the air in the waste pit with a heat exchanger, the temperature of the air in the waste pit can be heated while cooling the incinerator efficiently. In addition, since the heat exchanger is heated with steam or hot water, it is easy to control the temperature of the heat exchanger, control the air temperature in the garbage pit to a desirable temperature, prevent air leakage from the inlet, and incinerate There is a feature that can increase the thermal efficiency of the furnace.

It is a schematic block diagram of the waste incineration equipment concerning one Example of this invention. It is the II-II sectional view taken on the line of the refuse incineration equipment shown in FIG. It is a schematic block diagram of the waste incineration equipment concerning the other Example of this invention. It is a schematic block diagram of the waste incineration equipment concerning the other Example of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies the waste incineration facility for embodying the technical idea of the present invention, and the present invention does not specify the waste incineration facility as follows. Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The waste incineration facilities shown in FIGS. 1 and 2 incinerate waste that is incinerated. Garbage can be mainly disposed of by incineration of garbage, waste plastic, medical waste, and the like. The garbage incineration facility shown in the figure includes a garbage pit 1 that opens a garbage inlet 13, an incinerator 2 that is incinerated by being supplied with garbage 9 in the garbage pit 1, and air in the garbage pit 1 as combustion air. A suction duct 3 is provided for suction and supply to the incinerator 2.

  In the garbage pit 1, a side wall 12 is closed with a roof 11, and a dust inlet 13 is opened in the side wall 12. In the trash pit 1, a trash input chamber 15 in which a trash collection vehicle 8 that transports trash 9 and the trash 9 is input into the trash pit 1 is provided outside the input port 13. The floor level of the dust input chamber 15 is arranged on the same horizontal plane as the lower edge of the input port 13. The garbage collection vehicle 8 backs the inside of the garbage input chamber 15, inserts the rear end of the loading platform 8 </ b> A into the loading port 13, and tilts the loading platform 8 </ b> A to a downward slope to throw the garbage 9 into the garbage pit 1 from the loading port 13. To do. The garbage pit 1 is provided with a plurality of inlets 13 so that a plurality of garbage trucks 8 can simultaneously input the garbage 9.

  The inlet 13 has a shutter 14 that can be opened and closed so that the inlet 13 can be closed without the garbage truck 8 approaching. The shutter 14 moves up and down to open and close the insertion port 13. The shutter 14 can reliably close the inlet 13 so that the air in the dust pit 1 does not leak. However, a flexible sheet can also be used for the shutter. The shutter made of a flexible sheet is opened and closed by being pushed by the loading platform of the garbage truck, so there is no need to control the opening and closing, and a simple structure can be achieved.

  The input port 13 is opened above the bottom surface 16 of the garbage pit 1, and a garbage storage unit 10 is provided below the input port 13.

  The garbage pit 1 includes a crane 17 that transfers the garbage 9 to be put into the incinerator 2. The crane 17 is an overhead traveling crane, and suspends a bucket 17 </ b> A that holds the garbage 9 and transfers it to the incinerator 2. The crane 17 is operated outside the garbage pit 1 to grab the garbage 9 with the bucket 17 </ b> A and transfer it to the incinerator 2. In the garbage pit 1, a hopper 21 for transferring the garbage 9 to the incinerator 2 is provided. The garbage 9 thrown into the hopper 21 is transferred to the incinerator 2 and incinerated.

  The garbage pit 1 has a closed space by fixing the roof 11 to the upper end of the side wall 12. A heat exchanger 4 for heating the air in the dust pit 1 is disposed on the dust pit 1. The heat exchanger 4 is heated by the waste heat of the incinerator 2 and warms the air in the garbage pit 1. The heat exchanger 4 is disposed above the dust storage unit 10 and heats the air in the dust pit 1. 1 and 2, the heat exchanger 4 is disposed above the charging port 13. In the dust pit 1 in this figure, the heat exchanger 4 is arranged away from the roof 11. In this structure, the air in the dust pit 1 is heated by the heat exchanger 4 and smoothly flows upward by the action of convection and can be exhausted from the suction duct 3. However, the heat exchanger 4 can also be fixed to the inner surface of the roof 11 as shown in FIG.

  The dust pit 1 that fixes the heat exchanger 4 to the inner surface of the roof 11 is configured to incline the roof 11 upward toward the suction port 32 of the suction duct 3 and convection the air heated by the heat exchanger 4. It can flow to the suction port 32. Further, the roof 11 inclined upward toward the suction port 32 can smoothly suck the warmed and light air from the suction port 32 and supply it to the incinerator 2 as combustion air.

  The heat exchanger 4 is heated by the waste heat of the incinerator 2. As shown in FIGS. 1 and 3, the heat exchanger 4 is connected to the chimney 25 of the incinerator 2 and heated by the exhaust gas of the incinerator 2. The heat exchanger 4 exhausts the exhaust gas from the incinerator 2 to the outside. The heat exchanger 4 is heated by high-temperature exhaust gas and efficiently heats the air in the dust pit 1. The heat exchanger 4 heated by the exhaust gas of the incinerator 2 is connected to the chimney 25 so as to be bypassed or connected to the chimney 25 so that the exhaust gas of the incinerator 2 passes through the heat exchanger 4 and is exhausted. To do.

  As shown in FIG. 4, the heat exchanger 4 can also be heated with steam or hot water heated in the incinerator 2. This heat exchanger 4 is connected to a heating heat exchanger 41 provided in the incinerator 2 via a circulation pump 42 and circulates steam and water heated by the heating heat exchanger 41 to heat the heat exchanger 4. Is done. The heat exchanger 41 for heating includes a heat exchange pipe 43 wound around the incinerator 2. The heat exchange pipe 43 is connected to the heat exchanger 4 of the dust pit 1 via the circulation pump 42 to heat the air of the dust pit 1. The heat exchanger 4 connected to the heat exchange pipe 43 does not allow exhaust gas to pass through it, so that it is not contaminated with exhaust gas, and the temperature of the passing hot water or steam is controlled so that the air in the dust pit 1 Can be heated to a preferred temperature.

  The garbage pit 1 has the roof 11 and the side wall 12 made of steel-framed steel plates, and the upper surface of the roof 11 is colored black. The garbage pit 1 absorbs solar heat at the roof 11. For this reason, the roof 11 is heated by solar heat, and the air in the garbage pit 1 is heated. Therefore, this garbage pit 1 heats internal air with the heat exchanger 4, and also heats internal air using solar heat effectively. Therefore, the air in the garbage pit 1 is heated to a higher temperature and is supplied to the incinerator 2 as high-temperature combustion air, so that the thermal efficiency of the incinerator 2 is further increased and less fuel is consumed. In particular, the dust pit 1 that heats the roof 11 with solar heat efficiently heats the air in the dust pit 1 throughout the year, and warms the air temperature in the dust pit 1 higher than the outside air temperature.

  The temperature in the dust pit 1, more precisely the temperature in the center of the dust pit 1 is always higher than the outside air flowing in from the inlet 13, for example, higher than 10 ° C., preferably higher than 15 ° C., more preferably 20 Set higher than ℃. By increasing the temperature of the air in the dust pit 1, it is possible to more reliably prevent the air in the dust pit 1 from leaking from the inlet 13 as shown by the arrow B in the chain line in FIG. By increasing the temperature of the combustion air generated, the heat efficiency can be increased and the fuel consumption can be reduced.

  Preferably, the air temperature in the garbage pit 1 is adjusted to an optimum temperature in summer and winter. Since the outside air temperature is low in winter, the air temperature in the garbage pit 1 can be lowered to reduce air leakage from the inlet 13. However, if the air temperature in the dust pit 1 is low, the temperature of the combustion air supplied to the incinerator 2 is lowered and the thermal efficiency is lowered. Therefore, the air temperature in the dust pit 1 is preferably 20 ° C. higher than the outside air temperature. The above is set high. Since the outside air temperature is high in summer, the air temperature in the garbage pit 1 can be increased, and the temperature of the combustion air can be increased to increase the thermal efficiency of the incinerator 2. Therefore, the air temperature in the garbage pit 1 in the summer is preferably set 10 ° C. higher than the outside air temperature.

  The air in the garbage pit 1 is heated by the heat exchanger 4 and further heated by the roof 11 and supplied as combustion air from the suction duct 3 to the incinerator 2. Therefore, the temperature of the air supplied to the incinerator 2 as combustion air is higher than the temperature of the central portion of the garbage pit 1, and the thermal efficiency of the incinerator 2 is increased.

  The dust pit 1 is connected to a suction duct 3 that sucks air inside and transfers it to the incinerator 2 as combustion air. The suction duct 3 forcibly sucks the air above the dust pit 1 and raises the air in the dust pit 1. The dust pit 1 shown in FIGS. 1 to 4 is connected to the suction port 32 of the suction duct 3 under the roof 11. The dust pit 1 in the figure has a suction port 32 at the highest position below the roof 11 in a shape in which the central portion of the roof 11 is raised and both sides thereof are inclined downward. As shown in FIG. 2, the dust pit 1 includes a suction pipe 31 having a plurality of suction ports 32 arranged in the center below the roof 11, and the suction pipe 31 is connected to the suction duct 3. 32 is provided in the garbage pit 1. The suction duct 3 is provided with a blower fan 33 in the middle, and the air sucked from the dust pit 1 is transferred to the incinerator 2 as combustion air by the blower fan 33. However, it is not always necessary to connect a blower fan to the suction duct. The incinerator can also suck the air in the garbage pit as combustion air through the suction duct.

  The incinerator 2 includes a hopper 21 into which trash 9 is charged, a rotary kiln 22 that incinerates the trash 9 supplied from the hopper 21, a high-temperature combustion gas supplied to the rotary kiln 22, and a trash 9 that is supplied to the rotary kiln 22. And a rotary cooler 24 that cools and discharges the ash incinerated in the rotary kiln 22.

  The rotary kiln 22 is a cylinder that is rotated, and is inclined so that the rotation axis is descending from the hopper 21 toward the tip. The rotary kiln 22 incinerates the dust 9 supplied from the hopper 21 while rotating. The garbage 9 is incinerated while passing through the rotary kiln 22 and discharged to the rotary cooler 24.

  The burner 23 is provided at the tip of the rotary kiln 22 and allows the combustion gas to pass through the rotary kiln 22 by supplying the combustion gas to the hopper 21 side. The burner 23 burns fuel such as heavy oil and supplies the combustion gas to the rotary kiln 22. The burner 23 is controlled so as to keep the temperature of the combustion gas in the rotary kiln 22 constant. That is, when the temperature of the combustion gas in the rotary kiln 22 becomes lower than the set temperature, the amount of fuel supplied is increased to increase the temperature of the combustion gas. Conversely, when the temperature of the combustion gas becomes higher than the set temperature, Decrease the supply amount to lower the temperature of the combustion gas. For example, the burner 23 controls the temperature of the combustion gas in the rotary kiln 22 to 800 ° C. to 1000 ° C., and incinerates and discharges the dust 9 passing through the rotary kiln 22.

  The burner 23 uses the air in the garbage pit 1 as combustion air and sucks it to burn the fuel. The combustion air of the burner 23 is supplied from the dust pit 1 through the suction duct 3. The suction duct 3 has a suction port 32 provided on the suction side opened to the inside of the roof 11 of the dust pit 1 and has a discharge side connected to the burner 23. The garbage pit which makes the amount of garbage stored 18,000 cubic meters has an air volume of about 30,000 cubic meters. The burner that incinerates the garbage stored in the garbage pit consumes 90,000 cubic meters of combustion air per hour. Since this garbage incineration equipment consumes the air in the garbage pit as combustion air in 20 minutes, the bad odor in the garbage pit is replaced with new air every 20 minutes.

  The incinerated ash discharged from the rotary kiln 22 is supplied to the rotary cooler 24 and cooled by the rotary cooler 24. The rotary cooler 24 is a rotating cylinder and is disposed below the lower end of the rotary kiln 22. The rotary cooler 24 rotates the cylinder and transfers the incinerated ash supplied from the rotary kiln 22 while cooling it. The incinerated ash cooled by the rotary cooler 24 is cooled and then discharged.

DESCRIPTION OF SYMBOLS 1 ... Garbage pit 2 ... Incinerator 3 ... Suction duct 4 ... Heat exchanger 8 ... Garbage truck 8A ... Cargo bed 9 ... Garbage 10 ... Storage part 11 ... Roof 12 ... Side wall 13 ... Entrance 14 ... Shutter 15 ... Garbage introduction room 16 ... Bottom 17 ... Crane 17A ... Bucket 21 ... Hopper 22 ... Rotary kiln 23 ... Burner 24 ... Rotary cooler 25 ... Chimney 31 ... Suction pipe 32 ... Suction port 33 ... Blower fan 41 ... Heating heat exchanger 42 ... Circulating pump 43 ... Heat exchange pipe

Claims (5)

Garbage pit (1) having an opening (13) for the garbage to be incinerated, an incinerator (2) in which the garbage (9) of the garbage pit (1) is supplied and incinerated, and in the garbage pit (1) A dust incinerator comprising a suction duct (3) for sucking in air as combustion air and supplying it to an incinerator (2),
A heat exchanger (4) that is heated by waste heat from the incinerator (2) and heats the air in the garbage pit (1) is disposed on the upper part of the garbage pit (1),
Further, the suction duct (3) has a suction port (32) for sucking air in the dust pit (1) disposed above the dust pit (1), and is heated by the heat exchanger (4). It has a structure that sucks the air above the garbage pit (1) and supplies it to the incinerator (2).
Furthermore, the inlet (13) is opened in the side wall (12) of the garbage pit (1), and the inlet (13) is disposed below the inlet (32) of the suction duct (3). Opened garbage incineration facility.   The garbage incineration facility according to claim 1, wherein the roof (11) of the garbage pit (1) is colored black to absorb sunlight.   The refuse incineration facility according to claim 1 or 2, wherein the roof (11) of the dust pit (1) is inclined upwardly toward the suction port (32) of the suction duct (3).   The refuse incineration facility according to any one of claims 1 to 3, wherein the heat exchanger (4) is connected to a chimney (25) of an incinerator (2) and heated by exhaust gas.   The refuse incineration facility according to any one of claims 1 to 3, wherein the heat exchanger (4) is heated with steam or hot water heated in an incinerator (2).

Images