JPH06323515A - Opposite-direction combustion type refuse incinerator - Google Patents

Abstract

PURPOSE: To reduce processing time and cost by reversely burning refuge charged in an incinerator to introduce flue gas generated by burning downward to the bottom of the incinerator and discharge the same through a chimney, so as to reduce the secondary pollution of refuge incineration and eliminate second or third subsequent processing steps. CONSTITUTION: A chimney 13 provided upright along the outer periphery of an incinerator body 10 communicates with the lower end of the incinerator body at the lower end thereof, and a blower means 70 communicates with the chimney 13 by way of an air duct 72 to generate a low-pressure zone in an appropriate region in the upper end portion of the chimney 13. In addition, the chimney 13 is provided with suction power at the bottom end portion thereof to make flue gas of refuge incineration generated in the incinerator 10 flow downward to the bottom thereof and discharge the same outside through the chimney 13, thereby reversely incinerating refuge to reduce the secondary pollution generated therein and eliminate the need for second or third processing steps.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse incinerator, and more particularly to a reverse combustion type incinerator which burns in a reverse direction.

[0002]

2. Description of the Related Art A general small incinerator for household waste generated at home adopts a natural ventilation combustion system with a simple structure. For example, a reverse combustion type incinerator uses raw garbage at the top. The waste gas is discharged from the bottom of the incinerator directly into the atmosphere through the chimney from the top of the incinerator. On the other hand, the trash falls downward due to its own weight in the opposite direction to the progress of combustion. During this time, food waste preheats and burns to the bottom of the furnace body, or burns completely to form light ash, which rises on the rising hot air stream generated by combustion, resulting in the exhaust air discharged from the chimney. It forms a secondary pollution with a large amount of ash dust.

Further, the high temperature gas generated by the burning of refuse is discharged through the inside of the garbage, but usually the garbage contains a large amount of water (ordinary garbage contains about 30% water). Therefore, if the hot gas that rises in the furnace is not completely preheated yet and comes into contact with food waste that has been charged from above, part of the heat is absorbed and the temperature decreases, and the steam recondenses and burns. While dripping into the garbage pool inside, it significantly hinders combustion, but emits incomplete combustion gas. Therefore, it is necessary to take a secondary or tertiary countermeasure process step so as to promote combustion and not generate smoke, and therefore the process time is prolonged and the cost is increased.

[0004]

DISCLOSURE OF THE INVENTION In view of the above-mentioned problems in the conventional reverse combustion type refuse incinerator, the present invention causes the waste charged in the furnace to be burned in the reverse direction from the bottom and is generated by the combustion. The waste air is guided from the top to the bottom, and the combustion gas is always discharged from the chimney through the bottom of the furnace in the complete combustion zone to reduce the secondary pollution caused by the incineration of the waste and the secondary or tertiary An object of the present invention is to provide a reverse combustion type waste incinerator that can reduce the processing time and cost without requiring a processing step.

[0005]

In order to achieve the above object, the present invention provides: (a) a dust ash discharge port that can be opened and closed is provided on the bottom of the furnace, and a chimney is provided on a furnace wall at a proper position higher than the discharge port. A furnace body having lower ends communicating with each other and an exhaust port provided near the upper end of the furnace wall and communicating with an appropriate portion of the chimney; and (b) a furnace lid for automatically opening and closing the opening of the furnace body top end. ,
(C) A supporting frame that is installed at a position slightly higher than the portion that communicates with the lower end of the chimney in the furnace body, and (d) is fixedly installed on the upper surface of the supporting frame, and the bottom part thereof is formed into a curved support part. A first preheating pipe provided with an upright portion extending upward in the central portion of the support portion and having a plurality of fumaroles for ejecting high temperature gas at appropriate intervals in the upright portion;
A second preheating pipe fixed to the inside of the support frame by a plurality of retaining rings so as to be positioned on the upper surface of the support portion, and having a plurality of fumarole holes for simultaneously ejecting high-temperature gas at appropriate intervals; F) It is provided so as to communicate with the inside of the chimney, and is configured by combining with a blower means for causing the dust combustion waste gas generated in the furnace body to flow downward and to discharge the waste combustion exhaust air from the chimney to the outside of the furnace.

Further, in place of the first preheating pipe, a Y-shaped hearth is fixed to the inner wall of the hearth on the lower surface of the second preheating pipe, and the Y-shaped hearth is arranged in a plurality of rows. And upper and lower two-layer hollow metal pipes, and a plurality of gas injection holes are formed in the upper and lower two-layer hollow metal pipes at appropriate intervals.
The upper and lower two layers of hollow metal tubes are configured so that their ends are kept at an appropriate interval.

Further, (g) an opening / closing device for controlling the automatic opening / closing operation is provided on the furnace lid, and the opening / closing device is fixed to the outer peripheral wall of the upper end of the furnace body; Formed by a take-up reel provided at various positions and a steel wire wound around the take-up reel and having an end connected to the top end of the furnace lid. By winding or loosening it so that the opening and closing of the furnace lid can be controlled, and (h) the support portion of the first preheating pipe is formed with a horizontal spiral curve, or the first preheating pipe is upright. The part is formed in a vertical spiral curve extending upward, and (i) the second preheating pipe is formed in a circular or square winding spiral shape and fixed to the support frame,
(E) A hood having a middle portion of the body upper part of the body portion and a diameter smaller than the lower end edge is attached to the bottom of the furnace body corresponding to a place communicating with the lower end of the chimney, and the upper or lower end of the hood is welded or spotted. It is fixed to the peripheral wall of the furnace body by welding, and an appropriate gap is maintained between the bottom end of the hood and the peripheral wall of the furnace body so that waste gas of dust combustion can flow into the chimney through the gap, Further, the ash generated after the complete combustion of the waste is filtered by the hood so that most of the ash is dropped to the bottom of the furnace body. (L) The blower means includes a blower, a blower pipe, and the chimney. It is formed by the nozzle that extends inside,
(E) An air preheating chamber is provided around the inner peripheral wall of the lower end of the furnace body and the outer peripheral wall of the lower end of the chimney, and the air preheating chamber is communicated with the blower pipe of the blower means and the first and second preheat pipes. It is more preferable that (w) a cover ring is fixedly provided along the upper surface of the second preheating pipe so that dust does not fall and accumulate between the second preheating pipe and the peripheral wall of the furnace body.

[0008]

The present invention, which is configured as described above, closes the refuse ash discharge port at the bottom of the furnace body before incinerating the refuse,
A relatively dry and combustible dust is charged from the opening at the upper end of the furnace body so as not to exceed the height of the first and second preheating tubes, and then the opening is tightly closed by the furnace lid, and the ignition port The valve and the exhaust port are opened to ignite by a normal means such as charging a spark from the ignition port, and then the valve at the ignition port is closed and the high pressure air is blown by the blowing means. , Through the preheating pipe, to be ejected from each fumarole, and exhaust the waste gas and smoke of the dust combustion from the exhaust port to the outside of the furnace to completely burn the dust in the furnace body, The inside of the furnace is preheated until the temperature of the air ejected from the fumaroles of the first and second preheating pipes becomes higher than the ignition point of dust, and then the exhaust port is closed to start reverse combustion.

That is, first, the furnace lid is opened and raw garbage is loaded and continuously burned. At this time, the dust that has not yet burned down and moves downwards is always the first,
By adjusting the charging amount of the raw garbage at any time so as to cover the second preheating pipe, the preheated air having a temperature higher than the dust ignition point is continuously ejected from the first and second preheating pipes.

Therefore, it is possible to incinerate the waste continuously, and the combustion temperature becomes higher as it lowers, and the combustion waste gas is forcedly introduced from the furnace bottom to the lower end of the chimney by the blowing means,
Since it is completely burned near the bottom and then discharged to the outside of the furnace, if dust is charged into the furnace at regular intervals and solid ash is discharged from the discharge port at the bottom of the furnace, the waste inside the furnace will be burned. It can always be moved downwards and burned without encountering exhaust air.

On the other hand, when the refuse incineration is completed, the furnace lid is closed and the residual refuse in the furnace is incinerated continuously, and when the temperature inside the furnace is further lowered and becomes lower than the set temperature, the inside of the chimney is closed. The thermistor provided in advance automatically shuts off the electricity and the waste incineration work can be completed.

Then, on the furnace lid, a pillar fixed to the outer peripheral wall at the upper end of the furnace body, a take-up reel provided at an appropriate position of the pillar, and an end portion wound around the take-up reel. Is provided with a steel wire connected to the top end of the furnace lid to control the automatic opening / closing operation of the steel wire.
Of the first preheating pipe is formed in a horizontal spiral curve, or the upright portion of the first preheating pipe is formed in a vertical spiral curve extending upward, and the second preheating pipe is circular. Or, it is formed in a square winding spiral shape and is fixed to the supporting frame, and the middle part of the body part has a diameter smaller than the upper and lower end edges of the furnace part at the bottom part of the furnace body corresponding to the place communicating with the lower end of the chimney. The hood is attached, the upper and lower ends of the hood are fixed to the peripheral wall of the furnace body by welding or spot welding, and an appropriate gap is maintained between the bottom end of the hood and the peripheral wall of the furnace body to burn dust. So that the waste gas from the furnace can flow into the chimney through the gap, and the ash generated after the complete combustion of the waste is filtered by the hood so that most of the ash falls to the bottom of the furnace body. To And further, the blower means is formed by a blower, a blower pipe and a nozzle extending into the chimney, and an air preheating chamber is provided around the furnace body lower end inner peripheral wall and the chimney lower end outer peripheral wall, respectively.
The air preheating chamber is made to communicate with the blower pipe of the blower means and the first and second preheating pipes, and a cover ring is fixedly provided along the upper surface of the second preheating pipe to form the second preheating pipe. By preventing dust from falling and accumulating with the peripheral wall of the furnace body, it is possible to more ideally and surely control all the conditions related to incineration of the waste in the furnace.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0014]

1 and 2 show a reverse burning type refuse incinerator of the present invention which burns in the opposite direction.
Furnace body 10, furnace lid 20, hood 30, support frame 40, first preheating pipe 50, second preheating pipe 60, blower 70,
And a cover ring 80.

The furnace body 10 has a proper shape and burns dust. In the present embodiment, a cylindrical shape is taken as an example for the purpose of explanation. However, a square shape, a rectangular shape or an elliptical shape (a large reverse direction) is used. Combustion incinerators are often rectangular or oval)
You may form by. The furnace body 10 has an ash outlet 11 at the bottom.
Is provided so that the movable lid 12 can be opened and closed so that the discharge port 11 can be opened or closed at any time when necessary.

Further, a chimney 13 whose bottom communicates with the inner bottom of the furnace body 10 is erected along the outer peripheral wall of the furnace body 10, and at the appropriate position near the upper end of the furnace body 10, the inside of the upper end of the chimney 13 and the on-off valve. An exhaust port 14 that communicates by operation is provided, and the furnace body 10
An ignition port 15 is formed at an appropriate position higher than the bottom of the chimney 13 and a portion penetrating the chimney 13 so that it is convenient to open a valve only when needed and to set a fire.

In the lower half of the furnace body 10, a hollow air preheating chamber 16 having an appropriate thickness is provided around the inner peripheral surface of the furnace body 10, and on the outer peripheral surface of the lower half of the chimney 13. Hollow air preheating chamber 1 communicating with the air preheating chamber 16 having an appropriate thickness
Circulate around 7.

The furnace lid 20 covers the opening at the top end of the furnace body 10 so that it can be automatically opened and closed, and its automatic opening and closing operation is controlled by the opening and closing device 90.

The opening / closing device 90 is wound around the pillar 91 fixedly provided on the outer peripheral wall of the upper end of the furnace body 10, a take-up reel 92 provided at an appropriate position of the pillar 91, and the take-up reel 92. Steel wire 9 whose end is connected to the top end of the furnace lid 20
3, the winding reel 92 is expanded and contracted from the operation of winding or discharging the steel wire 93 by forward and reverse rotation means such as a motor to control the opening and closing of the furnace lid 20.

The hood 30 has the middle section of the body on the body,
The diameter of the furnace body 10 is smaller than that of the lower end edge and is provided at the lower end of the furnace body 10 corresponding to the portion where the furnace body 10 and the bottom of the chimney 13 communicate with each other. The upper and lower ends of the hood 30 are fixed to the inner peripheral wall of the furnace body 10 by welding or spot welding, respectively.
A proper gap 31 is maintained between the bottom end and the inner peripheral wall of the furnace body 10 so that exhaust gas of the dust combustion can flow into the chimney 13 through the gap 31 and after the complete combustion of the dust. The generated ash is regulated and guided to the bottom of the furnace body 10 and accumulated.

The supporting frame 40 is a bar frame provided on the upper surface of the hood 30 near the bottom of the furnace body 10.
4 and 4, it is formed by a bottom support 41 and a vertical support 42. The bottom support 41 is formed by curving two rod-shaped members of appropriate length into concave shapes so that their bottoms are cruciform. It is formed by welding and fixing the intersecting portions so as to form a shape. The vertical support portion 42 is provided upright at the center of the bottom support portion 41 where both members intersect.

The first preheating pipe 50 is fixed to the upper surface of the support frame 40. As shown in FIG. 3, the bottom portion of the first preheating pipe 50 is formed into a horizontal spiral supporting portion 51, and the supporting portion 51 is formed. Is attached to the bottom support 41 of the support frame 40, and the support 51
When forming the, a spiral upright portion 52 extending upward is provided at a central position of the horizontal spiral support portion 51, and the upright portion 52 is fixed around the vertical support portion 42 of the support frame 40. Let

Further, a plurality of jet holes 53 for high temperature gas are provided at appropriate intervals on the surface of the upright portion 52.
Then, as shown in FIG. 1, one end of the first preheating pipe 50 is communicated with the air preheating chamber 16, and a conical cap 54 is attached to the top end of the upright portion 52 of the first preheating pipe 50.
It prevents dust from remaining on the upper surface of the first preheating pipe 50.

The second preheating pipe 60 is positioned on the upper surface of the support portion 51 of the first preheating pipe 50.
The support frame 40 is spirally fixed to the inside of the bottom surface support portion 41 having a concave shape. A plurality of holding rings 61 provided on the upright wall surface inside the bottom support 41 of the support frame 40 (in this embodiment, each one wheel forming the spiral shape of the second preheating pipe is fixed by four holding rings). The bottom support portion 41 of the support frame 40.
And a jet hole 62 for jetting a plurality of high-temperature gases at appropriate intervals like the first preheating pipe 50.
Is provided, and one end thereof is made to communicate with the air preheating chamber 16.

The blower means 70 is the chimney 13 of the furnace body 10.
The exhaust gas, which is provided so as to communicate with the inside of the furnace body 10 when the dust is burned inside the furnace body 10, is caused to flow in the opposite direction, and the stack 1
It escapes into the atmosphere from 3. The blowing means 70
Is formed by a blower 71, a blower pipe 72, and a nozzle 73 extending into the chimney 13. The blower 71 is provided outside the furnace body 10, and its rotation generates high-pressure air. 71 connected to the air preheating chamber 17 of the chimney 13 so that the high pressure air generated by the rotation of the blower 71 is connected to the air preheating chamber 1
6 and 17, and the nozzle 73 is connected to the blower pipe 7
2 is connected to the other end and the other end is extended deeply into the chimney 13.

The cover ring 80 is fixed along the upper surface of the second preheating pipe 60 so that dust is contained in the second preheating pipe 60.
And the inner peripheral wall of the furnace body 10 are prevented from falling and staying.

Although the structural features of each part of the present invention, the relative positions of each part, and the connection relationship with each other have been described, the waste incineration operation method of the present invention, as shown in FIG. It must be warmed first, the outlet 11 at the bottom of the furnace body 10 is tightly closed, and then the furnace lid 20 at the top end of the furnace body 10 is opened to remove relatively dry and easily combustible food waste. The height of the food waste that was loaded into the
Do not exceed the height of the second preheating pipes 50 and 60.

Next, the furnace lid 20 is tightly closed, and the ignition port 15 and the exhaust port 14 through which the furnace body 10 and the chimney 13 communicate with each other are opened to ignite from the ignition port 15, and then the ignition port 15 is opened. To blow the high pressure air into the nozzle 73 and the air preheating chambers 16 and 17 and eject the high pressure air from the fumaroles 53 and 62 of the first and second preheating pipes 50 and 60, respectively. To do so.

The heating operation in the furnace is the same as the conventional combustion method by natural ventilation, and exhaust gas and smoke are discharged from the exhaust port 1 of the furnace body 10.
4 escapes to the outside of the furnace, and the dust inside the furnace body 10 burns at a high temperature completely, and the fumaroles 5 of the first and second preheating pipes 50 and 60
If the temperature of the air jetted from Nos. 3 and 62 is higher than the ignition point of the dust, it means that the heating operation in the furnace is completed.

When the furnace warming work is completed, the exhaust port 14 is closed and reverse combustion is started. First, the furnace lid 20
Open, and the garbage to be incinerated is charged into the furnace body 10 and continuously burned. At this time, the unburned garbage should be naturally moved downward from its own weight, and the unburned garbage should be covered with a height higher than the first and second preheating pipes 50 and 60. is there.

Therefore, the unburned food waste is charged while being adjusted at each predetermined interval time. When the food waste completely covers the first and second preheating pipes 50 and 60, and when the food waste is completely incinerated, the furnace lid 20 is tightly closed and the furnace body 10 is not yet burned. When the refuse is incinerated and the unburned refuse is completely incinerated, the temperature inside the furnace body 10 begins to decrease, and when the temperature falls below the set temperature, the thermistor provided inside the chimney 13 Automatically shuts off electricity to complete the waste incineration work. In this process, the ignition port 15 not only serves to ignite dust in the furnace, but is also extremely convenient for treating and removing incombustible dust during or after combustion.

Next, the principle of the reverse combustion system in the reverse combustion type refuse incinerator of the present invention will be described.

The "reverse combustion method" incineration method is a reverse combustion method according to the law of natural combustion, and is completed by being controlled by an artificial factor so as to favor the reverse combustion condition. That is, the reverse combustion type incineration method burns from the top to the bottom, the burned dust volume is small and decomposes into ash dust, and while falling and accumulating at the bottom of the furnace body 10, it is charged from above the furnace body 10. Garbage moves downward from its own weight and continuously supplies fuel.

As shown in FIG. 1, when the blower 71 is started to send high-pressure air into the air preheating chamber 17 and further flow into the air preheating chamber 16 in the furnace body 10, the air flows along the inner peripheral wall of the furnace body 10. The first preheating pipe 50 and the second
Since the inside of the furnace is always pre-heated before flowing into the preheating pipe 60 and before incinerating the waste as described above, if the inside preheating work is performed for a certain period of time, the air in the air preheating chamber 16 becomes a high temperature state, Moreover, since the in-reactor preheating work is completed after the temperature of the air has become higher than the dust ignition point, the fumaroles 53 of the first and second preheating pipes 50, 60,
Each of the air ejected from 62 has an action of igniting dust, and supplies fresh air to the furnace body 10 to smoothly continue the combustion action.

Further, air is blown by the blower 71 into the first and second air.
At the same time as it is sent to the preheating pipes 50 and 60, high-pressure air is also supplied and jetted to the nozzle 73, and the waste air flow velocity in the upper half of the chimney 13 becomes vigorous. Therefore, a low-pressure zone is formed in the chimney 13 below the nozzle 73, and a suction force is provided, so that dust generated in the furnace body 10 from the portion communicating with the furnace body 10 at the bottom end of the chimney 13 is generated. Combustion waste air and smoke are sucked, flow downward from inside the furnace, flow out through the hood 30 through the gap 31, and finally are introduced into the chimney 13 and discharged outside the furnace. Thus, the so-called "reverse combustion method"
Incineration law is formed.

In addition to this, as shown in FIG. 5, the reverse combustion type refuse incinerator of the present invention has a special design to generate heat energy (see the figure). (Indicated by an arrow) can be introduced into the steam boiler 100 for use. Then, steam can be generated by a steam boiler and provided to other appliances as a power source.

FIG. 6 is a three-dimensional structure diagram of the second preheating pipe 110 of another embodiment of the present invention. The difference from the second preheating pipe 60 of the above embodiment is that The second preheating pipe 110 is formed by being wound in a quadrangular spiral shape, whereby the second preheating pipe 110 can be exerted by matching the rectangular furnace body.

Further, FIGS. 7 and 8 are three-dimensional structural views of a reverse combustion type refuse incinerator according to still another embodiment of the present invention. The difference between this embodiment and the above-described embodiments is that a Y-shaped hearth 1 having a Y-shape when viewed from the side is formed in the hood 30 having a small diameter interruption of the body instead of the first preheating pipe 50.
20 is provided.

As shown in FIG. 7, the Y-shaped hearth 120 is
Two upper and lower layers of hollow metal tubes 121, 12 arranged in a plurality of rows
2, the upper and lower two-layer hollow metal tube 121,
Each end of 122 is sealed, and a screw thread is threaded on the outer peripheral surface of the upper end to be screwed to the inner peripheral wall of the furnace body 10 in an inclined state,
In addition, the hollow metal tubes 121 and 122 of both layers are respectively attached to the furnace body 1.
When screwed into 0, one of the hollow metal tubes 12
One upper end is supported by the triangular support 130, and the upper end of the hollow metal pipe 122 of the other layer is supported by the upper end edge of the hood 30.
22 is firmly fixed to the inner peripheral wall of the furnace body 10.

Then, the hollow metal tubes 121 and 12 for both layers are formed.
The two ends are separated from each other so as to maintain an appropriate interval 140, and as shown in FIG. 8, a plurality of fumaroles 123 are formed in the peripheral surfaces of the hollow metal tubes 121 and 122 of both layers. So that hot air can be ejected.

The operation of the Y-shaped hearth 120 is difficult to completely separate combustible materials and incombustible materials from the viewpoint of the current waste classification situation, and therefore, the waste loaded in the waste incinerator is not easily separated. However, there is a risk that incombustibles may also be mixed in, and even if the incombustibles burn, they become relatively heavy and large lumps instead of becoming ash, and the distribution passages are easily cut off to the bottom of the furnace. The Y-shaped hearth 120 is characterized in that it is retained in the Y-shaped hearth 120 for a while, and after the incombustibles have finished the combustion process, the Y-shaped hearth 120 is provided in an inclined shape along the hollow metal tubes 121 and 122 of both layers. Then, the gap 140 is slid and dropped to the bottom of the refuse incinerator and taken out.

[0042]

The present invention configured as described above has the following effects.

1. Since the combustion waste air in the furnace flows downward, the dust that is burnt to become ash drops following the flow of the waste air. In addition, since the hood is provided at the bottom of the furnace body, the hood regulates ash dust and non-burning dust to drop it from the center of the furnace body, and since waste air can flow out from the gap, introduce it into the chimney. The amount of ash dust that accompanies exhausted waste air is greatly reduced, and the possibility of secondary pollution is almost eliminated.

2. The high-pressure air supplied by the blower generates suction force through the nozzle in the chimney, and discharges the waste air in the furnace body by flowing it downward from above.
Since it has a function to provide fresh air to the furnace and continuously ignite the waste, it is possible to use a reverse combustion type waste incinerator to smoothly carry out the incineration work and save fuel cost. I can.

3. The present invention is a reverse combustion type incineration method, in which waste air and smoke containing a large amount of water are caused to flow downward and discharged. Therefore, there is no effect on the unburned refuse charged from the upper end of the furnace body, and a large amount of fresh air is supplied to the furnace body at any time, so that no secondary or tertiary treatment step is required, and therefore, , The waste incineration processing time is shortened and the work becomes lighter.

4. When the present invention normally burns refuse,
If the unburned waste covers the first preheat pipe and the second preheat pipe, the furnace lid can be opened and placed at any time, which is extremely convenient for charging food waste to be incinerated. .

5. In particular, when a Y-shaped hearth is used, incombustible substances that have been mixed with waste and have finished the incineration process are temporarily retained in the Y-shaped hearth, and after the incineration process is completed, It can be taken out from the waste ash discharge port at intervals.
During the waste incineration process, the passage of ash falling to the bottom of the furnace will not be interrupted.

[0048]

[Brief description of drawings]

FIG. 1 is a side sectional view of a reverse combustion type refuse incinerator according to an embodiment of the present invention.

FIG. 2 is a top view of the reverse combustion type refuse incinerator of the embodiment.

FIG. 3 is a stereoscopic display diagram of a first preheating tube in the embodiment.

FIG. 4 is a stereoscopic view of a second preheating tube in the embodiment.

FIG. 5 is a view showing the use of the reverse combustion type refuse incinerator of the embodiment connected to a steam boiler.

FIG. 6 is a stereoscopic view of a second preheating tube according to another embodiment of the present invention.

FIG. 7 is a side sectional view of a reverse combustion type refuse incinerator according to still another embodiment of the present invention.

FIG. 8 is a stereoscopic view of a Y-shaped hearth in a reverse combustion type refuse incinerator according to another embodiment.

[0049]

[Explanation of symbols]

 10: Furnace body 11: Waste ash discharge port 12: Movable lid 13: Chimney 14: Exhaust port 16, 17: Air preheating chamber 20: Furnace lid 30: Hood 40: Support frame 50: First preheating pipe 51: Support Part 52: Upright part 53: Fume hole 60: Second preheating pipe 31: Gap 61: Holding ring 62: Fume hole 70: Blower means 71: Blower 72: Blower pipe 73: Nozzle 120: Y-shaped hearth 121, 122 : Layered hollow metal tube 123: fumarole 140: interval 80: cover ring 90: switchgear 91: support column 92: take-up reel 93: steel wire

Claims (10)

[Claims] 1. An exhaust chimney is connected in a direction branched from an ash discharge port (11) near the bottom of an upright tubular furnace body (10),
Blower means (7) for forcedly feeding air into the furnace body (10).
0) is provided, and the forcedly pumped air is temporarily provided in the chimney and the inner peripheral wall of the furnace body (10) in the preheating chamber (17, 1).
The reverse combustion type incinerator is characterized in that it is preheated by using the waste heat of combustion in the furnace body (10) by passing through 6). 2. An ash discharge port (11) at the bottom of the furnace body (10)
A movable lid (12) that can be opened and closed is attached to the furnace wall facing the ash discharge port (11) so that the lower end of the chimney (13) communicates with the furnace wall near the upper end of the furnace body (10). Exhaust port (1) communicating with the downstream side of the chimney (13) only when necessary
4) is provided, a furnace lid (20) that can be controlled to open and close is provided in the opening at the upper end of the furnace body (10), and the vicinity of a communication port with the lower end of the chimney (13) in the furnace body (10) is provided. The supporting frame (40) is erected at a slightly higher position, and on the upper surface of the supporting frame (40),
The hollow pipe is composed of a support part (51) along a horizontal plane and an upright part (52) extending upward from the center of the support part (51), and a plurality of fumaroles () for ejecting high temperature gas to the upright part (52). The first preheating pipe (50) having holes 53) formed at appropriate intervals is fixed, and at the same time, a plurality of fumaroles (62) for ejecting high temperature gas are appropriately provided inside the support frame (40). The second preheating pipes (60) provided at intervals are fixed by a plurality of retaining rings (61), and a blower means (70) is provided so as to communicate with the inside of the chimney (13),
The reverse combustion type incinerator according to claim 1, wherein the waste combustion waste air generated in the furnace body (10) is caused to flow downward and discharged from the chimney (13) to the outside of the furnace. 3. In place of the first preheating pipe (50),
The hearth (10) on the lower surface of the second preheating pipe (60)
A Y-shaped hearth (120) having a Y-shape when viewed from the side is fixed to the inner peripheral wall, and the Y-shaped hearth (120) is arranged in a plurality of rows to form hollow metal pipes (121, 122) in two layers. A plurality of gas injection holes (123) are formed in the upper and lower two-layer hollow metal pipes (121, 122) at appropriate intervals, and the upper and lower two-layer hollow metal pipes (121, 121) are formed. Reverse combustion incinerator according to claim 2, characterized in that the ends of the two (122) are kept at a suitable distance (140). 4. The opening / closing device (90) for controlling the automatic opening / closing operation of the furnace lid (20) is provided, and the opening / closing device (9) is provided.
No. 0) a pillar (91) erected on the outer peripheral wall of the upper end of the furnace body (10), a take-up reel (92) provided at an appropriate position of the pillar (91), and a take-up reel ( 92) and a steel wire (93) whose end is connected to the top end of the furnace lid (20), and the forward / reverse rotation of the take-up reel (92) is controlled to drive the steel wire. The reverse combustion incinerator according to claim 2 or 3, wherein (93) is wound or discharged so that opening / closing of the furnace lid (20) can be controlled. 5. The support portion (51) of the first preheating pipe (50) is curved so as to form a spiral shape along a horizontal plane, or an upright portion () of the first preheating pipe (50). The reverse combustion type incinerator according to claim 2, wherein 52) is wound into an upright cylindrical coil shape. 6. The second preheating pipe (60) is formed in a circular winding spiral shape or a square winding spiral shape, and the supporting frame (4) is formed.
The reverse combustion type incinerator according to claim 2 or 3, wherein the reverse combustion incinerator is fixed to (0). 7. A hood (30) having a drum-shaped middle section at the bottom of the furnace body (10) corresponding to a location communicating with the lower end of the chimney (13) and having a diameter smaller than the upper and lower edges of the trunk. And fixing the upper and lower ends of the hood (30) to the inner peripheral wall of the furnace body (10) by welding and spot welding, and appropriately between the lower end of the hood (30) and the inside of the furnace body (10). A large gap (31) is maintained, and the burnt waste gas is separated by the gap (3
The ash formed after the complete combustion of the refuse is dropped onto the bottom of the furnace body (10) by regulating the hood (30). The reverse combustion type incinerator according to 2 or 3. 8. The blower means (70) is provided with a blower (7).
The reverse combustion incinerator according to claim 2 or 3, which is formed by 1), a blower pipe (72) and a nozzle (73) extending into the chimney (13). 9. An air preheating chamber (16, 17) provided on the inner peripheral wall of the lower end of the furnace body (10) and the outer peripheral wall of the lower end of the chimney (13), respectively, is provided with a blower pipe (72) of the blower means (70). ) And the first and second preheating pipes (50, 60) are respectively communicated with each other, the reverse combustion type incinerator according to claim 2 or 3. 10. A covering ring (80) is provided along the upper surface of the second preheating pipe (60) to prevent dust from being generated between the second preheating pipe (60) and the inner peripheral wall of the furnace body (10). The reverse combustion type incinerator according to claim 1 or 2, which does not drop and stay.