JP6694299B2 - Incinerator - Google Patents

Description

  The present invention relates to incinerators.

An incinerator having a primary combustion chamber and a secondary combustion chamber is known (see, for example, Patent Document 1).
Further, an incinerator equipped with a grate is known (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-51367 JP-A-53-48370

  However, in a general small-sized incinerator, for example, when a combusted material such as vegetation and paper-based organic matter is burned, a relatively large amount of incineration residue is deposited in the lower part of the combustion chamber. It is necessary to report the waste from this incineration to the relevant government agencies and to transport it to a licensed facility for processing.

  Further, in order to prevent smoke, harmful gas, etc. due to incomplete combustion from flowing out of the incinerator, for example, as shown in Patent Document 1, secondary combustion in which incomplete combustion gas is completely burned Although an incinerator having a chamber is known, it has a complicated structure and the incinerator is expensive.

The incinerator of the present invention has at least the following configurations.
A primary combustion chamber having a tubular furnace wall formed by a refractory material, in which a roster is arranged in the lower part of the room,
A storage chamber that is provided in the upper portion of the primary combustion chamber and is capable of introducing a burned material into the primary combustion chamber,
A secondary combustion chamber provided in parallel with the primary combustion chamber, and having a cylindrical furnace wall formed of a refractory material,
A chimney portion provided at the upper part of the secondary combustion chamber,
A flue part that connects the lower part of the primary combustion chamber and the lower part of the secondary combustion chamber,
A heating unit that heats the interior of the secondary combustion chamber and completely combusts the incomplete combustion gas introduced from the primary combustion chamber to the secondary combustion chamber through the flue portion,
An incinerator having an air supply unit for supplying air to the secondary combustion chamber,
The flue section has a protrusion that protrudes from the primary combustion chamber side intake port toward the indoor side of the primary combustion chamber, and the burned material that is thrown into the primary combustion chamber from the storage chamber by the protrusion. A fire spread blocking section that prevents the flow into the flue section,
The intake port for incomplete combustion gas is located near the upper part of the primary combustion chamber, and a ventilation path is formed from the intake port for incomplete combustion gas along the inner wall of the primary combustion chamber and communicates with the smoke channel. An incomplete combustion gas return path,
Inside the secondary combustion chamber, the secondary combustion chamber side discharge port of the flue section is arranged between the chimney section, and the flame from the secondary combustion chamber side discharge port of the flue section is treated as the secondary It has a flame adjustment plate that is adjusted to be uniform in the combustion chamber,
The grate provided in the lower part of the primary combustion chamber comprises an upper grate and a lower grate having a narrower gap than the upper grate,
A space between the upper roster and the lower roster, a space below the lower roster, and a space above the upper roster communicate with the lower portion of the secondary combustion chamber via the flue portion. It is characterized by

  According to the present invention, it is possible to provide an incinerator that is capable of completely burning incompletely combusted gas (unburned gas) when incinerating a material to be burned, has a small amount of residue, and has a small and simple structure.

The conceptual diagram of the incinerator which concerns on embodiment of this invention. Sectional drawing which shows an example of the incinerator which concerns on embodiment of this invention. The fragmentary sectional perspective view for explaining an example of the incinerator concerning the embodiment of the present invention. The top view for demonstrating an example of the incinerator which concerns on embodiment of this invention. Sectional drawing which followed the AA line of the incinerator shown in FIG. The conceptual diagram for demonstrating the partition part between the primary combustion chamber of the incinerator and the storage chamber which concerns on embodiment of this invention. The figure for demonstrating an example of the secondary combustion chamber of the incinerator which concerns on embodiment of this invention, (a) is sectional drawing of a secondary combustion chamber, (b) is a BB line of FIG. 7 (a). Sectional view along. The figure for demonstrating an example of the temperature control part (temperature control plate) of an incinerator, (a) is a top view of the secondary combustion chamber vicinity, (b) is a conceptual diagram which shows the case where a temperature control plate is an open state, (C) is a conceptual diagram showing a case where the temperature adjusting plate is in a closed state.

  The incinerator according to the embodiment of the present invention is provided with a roster (grate) in the lower part of the room, a primary combustion chamber having a tubular furnace wall formed of a refractory material, and an upper part of the primary combustion chamber, A storage chamber that can put the burned material into the primary combustion chamber, a secondary combustion chamber that is provided in parallel with the primary combustion chamber and that has a cylindrical furnace wall made of refractory material, and an upper part of the secondary combustion chamber. , The flue part that communicates the lower part of the primary combustion chamber and the lower part of the secondary combustion chamber, and the interior of the secondary combustion chamber with the chimney part The heating unit has a heating unit that completely combusts the incomplete combustion gas introduced into the combustion chamber, and an air supply unit that supplies air to the secondary combustion chamber. Further, this incinerator is provided with a protruding portion that protrudes from the intake port on the primary combustion chamber side of the flue portion toward the inside of the primary combustion chamber, and the combustion target that is injected from the storage chamber into the primary combustion chamber by the protruding portion. A fire spread blocking part that prevents the inflow of things into the flue part and an incomplete combustion gas intake port are located near the upper part of the primary combustion chamber, and along the inner wall of the primary combustion chamber from the incomplete combustion gas intake port. An inflow path is formed and an incomplete combustion gas recirculation path communicating with the flue portion is provided.

  Hereinafter, an example of an incinerator according to an embodiment of the present invention will be described with reference to the drawings. Embodiments of the invention include, but are not limited to, the illustrated contents. In the following description of each drawing, the same parts as those already described are designated by the same reference numerals, and a duplicate description will be partially omitted.

  As shown in FIGS. 1, 2, 3, and 4, an incinerator 10 according to an embodiment of the present invention includes a primary combustion chamber 1 (No. 1 furnace), a secondary combustion chamber 2 (No. 2 furnace), It has a storage chamber 3 (storage), a flue portion 4 connecting the primary combustion chamber 1 and the secondary combustion chamber 2, a chimney portion 21, and the like. In the incinerator 10, a gantry frame 101 is formed of a member such as a pipe, and a base portion 102 made of a heat resistant material such as heat resistant concrete is formed. A tubular primary combustion chamber 1 and a tubular secondary combustion chamber are arranged side by side on the base portion 102.

  The primary combustion chamber 1 has a cylindrical furnace wall 1a made of a refractory material. A roster 11 (grate) is arranged in the lower part of the interior of the primary combustion chamber 1. A control port 19 and an ash outlet 18 are formed on the front side of the primary combustion chamber 1, and doors 191 and 181 are formed, respectively. The management port 19 and the ash outlet 18 function as an intake port from the outside to the primary combustion chamber 1, and the intake amount can be adjusted by opening / closing the doors 191 and 181 and the opening amount. A storage chamber 3 (storage) is provided above the primary combustion chamber 1.

  The storage chamber 3 is provided with a door 301 that can be opened and closed on the front side. Between the storage chamber 3 and the primary combustion chamber 1, a bottom plate 30 that can be opened and closed as needed is provided. The storage chamber 3 is configured to temporarily store the burned material B. When the bottom plate 30 is opened with the door 301 closed, the material B to be burned can be put into the primary combustion chamber 1 from the storage chamber 3 in a state of being shielded from the outside air.

The secondary combustion chamber 2 is provided in parallel with the primary combustion chamber 1 and has a cylindrical furnace wall 2a made of a refractory material. In the present embodiment, the secondary combustion is formed in a cylindrical shape. A chimney portion 21 is provided on the upper portion of the secondary combustion chamber 2. A management port 29 and a door 291 are provided on the back side of the secondary combustion chamber 2. Further, the secondary combustion chamber 2 and the primary combustion chamber 1 are configured to communicate with each other by a flue portion 4 provided at a lower portion of each.
Further, the secondary combustion chamber 2 is provided with an air supply pipe 23 as an air supply unit 6 for supplying air into the chamber. The air supply pipe 23 is formed in a tubular shape, and is erected from the bottom portion of the secondary combustion chamber 2 toward the chimney portion 21. An air passage 61 is formed in the base portion 102 at the bottom of the secondary combustion chamber 2, and a blower 6A (blower) as an air supply source provided outside the secondary combustion chamber 2 communicates with the air supply pipe 23. It has a structure. In detail, the ventilation path 61 is composed of a vertical hole 61a and a horizontal hole 61b, and the air supply pipe 23 is arranged on the vertical hole 61a.
A plurality of holes 23a are formed near the lower portion of the air supply pipe 23, a plurality of holes 23b are formed near the central portion, and a plurality of holes 23c are formed near the upper portion. Air is blown from the holes 23a, 23b, and 23c into the secondary combustion chamber 2 and is supplied by the blower 6A.

A temperature detector 51 such as a temperature sensor is provided in the secondary combustion chamber 2 to detect the temperature in the secondary combustion chamber 2.
A heating unit 5 such as a burner is provided in the secondary combustion chamber 2 and heats the inside of the secondary combustion chamber 2.
The control unit 52 drives and controls the heating unit 5 based on a signal input from the temperature detection unit 51 and indicating the indoor temperature of the secondary combustion chamber 2 (furnace temperature). In the present embodiment, the control unit 52 is set so that the temperature in the secondary combustion chamber 2 is set to about 800 ° C to 850 ° C when the incinerator is in operation. The temperature in the furnace of the secondary combustion chamber can be appropriately set according to the combustion state and the type of the material to be burned.
That is, when the temperature of the interior of the secondary combustion chamber 2 is set to a high temperature state (for example, about 800 ° C. to 850 ° C.) by the heating unit 5, the secondary combustion chamber 2 is introduced from the primary combustion chamber 1 into the secondary combustion chamber 2 via the flue portion 4. Incomplete combustion gas can be completely burned.

  Further, a heat insulating material 27 is provided in the secondary combustion chamber 2 so as to surround the periphery of the furnace wall 2a, so that the secondary combustion chamber 2 and the outside are in a heat insulating state. Further, an intermediate partition plate 105 is provided between the secondary combustion chamber 2 and the primary combustion chamber 1 to keep the primary combustion chamber 1 and the secondary combustion chamber 2 in a heat insulating state.

  A temperature adjusting part 25 is provided in the chimney part 21 above the secondary combustion chamber 2. The specific configuration of the temperature adjusting unit 25 will be described later.

The lower portions of the primary combustion chamber 1 and the secondary combustion chamber 2 have a structure in which a flue portion 4 communicates with each other. At the primary combustion chamber side intake port 4 a of the flue portion 4, a fire spread blocking portion 7 is provided. The fire spread blocking unit 7 includes a protrusion 7a that protrudes from the primary combustion chamber side intake port 4a of the flue unit 4 toward the inside of the primary combustion chamber 1. The fire spread blocking section 7 can prevent the burned material B that has been thrown into the primary combustion chamber 1 from the storage chamber 3 from flowing into the flue section 4 by the protrusion 7a.
Further, in the present embodiment, the protruding portion 7a that protrudes from the flue portion 4 toward the inside of the primary combustion chamber 1 is formed in a tubular shape, and has an opening 7c on its side surface. The opening 7c is configured to function as an intake port of the flue portion 4, and has a structure in which the intake amount of the flue portion 4 is large.
Further, an inclined portion 102k is formed in the base portion 102 so that the flow passage cross-sectional area of the secondary combustion chamber side discharge port 4e is smaller than that of the primary combustion chamber side intake ports 4a, 4b, 4c.

The incomplete combustion gas recirculation path 8 (unburned gas recirculation path) has an intake port 8a for incomplete combustion gas located near the upper part of the interior of the primary combustion chamber 1, and the primary combustion is performed from the intake port 8a for incomplete combustion gas. An air passage 8t is formed along the inner wall of the chamber 1 (on the side of the secondary combustion chamber) and has a structure communicating with the flue portion 4. Specifically, the output port 8e of the incomplete combustion gas recirculation passage 8 is formed in the upper portion 4t of the tubular portion of the flue portion 4. In the present embodiment, the output port 8e of the incomplete combustion gas recirculation passage 8 is formed above the protruding portion 7a of the flame spread blocking portion 7.
When the incinerator is in operation, the incomplete combustion gas in the upper part of the primary combustion chamber 1 flows into the flue portion 4 through the incomplete combustion gas intake port 8a, the ventilation passage 8t, and the output port 8e.

  The incomplete combustion gas recirculation pipe 9 (duct recirculation pipe) has a ventilation path that communicates with the flue portion 4 from the storage chamber 3 through the outside of the primary combustion chamber 1. In the present embodiment, in the incomplete combustion gas recirculation pipe 9, an intake port 9a is formed on the back side of the storage chamber 3, and an output port 9e is formed on the upper portion 4t of the tubular portion of the flue section 4. When the incinerator is in operation, the incomplete combustion gas in the storage chamber 3 flows into the flue portion 4 through the intake port 9a of the incomplete combustion gas reflux pipe 9, the communication passage, and the output port 9e.

<Lostle 11>
As shown in FIG. 5, a grate 11 is provided in the lower portion of the primary combustion chamber 1. Specifically, in the cylindrical primary combustion chamber 1, a recess 102U is formed in the base portion 102, and an upper roster 11A (11) and a lower roster 11B (11) are arranged in the recess 102U. The recess 102U also functions as the flue portion 4. In addition, as shown in FIG. 2, the upper rustle 11A (11) and the lower rustle 11B (11) are connected to the flue section 4 between the upper rustle 11A (11) and the lower rustle 11A (11). An intake port 4b of the flue portion 4 is provided in the grate 11B (11). Further, in the present embodiment, a space communicating with the flue portion 4 is formed below the lower roster 11B (11), and the intake port 4c of the flue portion 4 is provided below the lower roster 11B (11). It is provided.

In the present embodiment, since the gap is formed in the lower roster 11B (11) narrower than that in the upper rostrur 11A (11), for example, the burned material that has become smaller at the time of combustion is removed from the upper roster 11A (11). It drops and moves to the lower roster 11B (11), and efficiently burns on the lower roster 11B (11) in a state where it is easy to come into contact with air to completely become ash. In the present embodiment, the gap between the plurality of rod-shaped portions of the upper roster 11A (11) is about 50 mm, and the gap between the plurality of rod-shaped portions of the lower roster 11B (11) is about 20 mm.
The rostrut may have any shape, for example, a lattice shape, and as shown in FIGS. 2, 3, 4, and 5, a plurality of rod-shaped portions are arranged at predetermined intervals. May be. Moreover, you may arrange | position a grate on the member 11Ba built in the recessed part 102U.
In the recess 102U, since the incinerated ash accumulates in the lower portion of the lower roast 11B (11), it is preferable to remove the incinerated ash from the ash outlet 1e (see FIG. 2) regularly or at a predetermined timing.

<Bottom plate of storage room 3 (storage)>
As described above, the storage chamber 3 is provided on the primary combustion chamber 1. The storage chamber 3 is provided with an opening / closing door (not shown) on the front side, and is configured so that the burned material B such as wood chips, branches, and papers can be temporarily stored in the storage chamber 3. The bottom plate 30 (top plate of the primary combustion chamber) of the storage chamber 3 is configured to be openable / closable as required.

As shown in FIG. 6, in the present embodiment, the bottom plate 30 of the storage chamber 3 has two bottom plates 31 and 32, and the vicinity of the ends of the bottom plates 31 and 32 are rotatably supported by the support shafts 311 and 321. It is pivotally supported. When the material B to be burned is stored in the storage chamber 3, the bottom plates 31 and 32 are in the closed state as shown in FIG. 6 by the lock mechanism (not shown). Further, when the burned material B is loaded from the storage chamber 3 into the primary combustion chamber 1, the lock mechanism is released, the bottom plates 31, 32 are opened, and the burned material is loaded from the storage chamber 3 into the primary combustion chamber 1. To be done.
Further, in the incinerator, even when the material B to be burned is put into the primary combustion chamber 1, a space is secured in the upper portion of the primary combustion chamber 1 and the intake port 8a of the incomplete combustion gas recirculation passage 8 is closed. It is configured so that the ventilation passage of the flue portion 4 is secured by the protruding portion 7a of the fire spread blocking portion 7 provided on the intake side of the flue portion 4 without coming off.

  After the burned material B is charged, for example, by rotating a handle (not shown) provided on the bottom plates 31 and 32, as shown in FIG. 6, the bottom plates 31 and 32 are closed and locked by the lock mechanism. To do.

  In addition, if there is a gap even when the bottom plates 31 and 32 provided between the storage chamber 3 and the primary combustion chamber 1 are closed, incomplete combustion gas (unburned gas) ) May flow from the primary combustion chamber 1 into the storage chamber 3. In addition, when the bottom plates 31 and 32 are opened when the material to be burned is put into the primary combustion chamber 1 from the storage chamber 3 in a state of being shielded from the outside air, the incomplete transfer from the storage chamber 3 to the primary combustion chamber 1 occurs. Combustion gas may flow in. In the present embodiment, a recirculation pipe 9 for incomplete combustion gas that connects the storage chamber 3 and the flue portion 4 is provided, and the incomplete combustion gas in the storage chamber 3 is generated by the rising airflow of the secondary combustion chamber 2. Flows into the flue portion 4 from the intake port 9a of the incomplete combustion gas reflux pipe 9. That is, the incomplete combustion gas does not leak out of the incinerator from the storage chamber 3 and the primary combustion chamber 1. Further, even when the door 301 formed on the front side of the storage chamber 3 is opened during the operation of the incinerator, the incomplete combustion gas inside the storage chamber 3 does not leak to the outside.

  The bottom plate, the lock mechanism, the handle, and the like of the storage chamber 3 are not limited to the above-described forms, and a predetermined amount of a material to be burned from the storage chamber 3 can be transferred from the storage chamber 3 to the primary combustion chamber when being cut off from the outside air. Any structure may be used as long as it can be added to 1.

<Flame adjustment plate 24>
The ascending airflow (gas) flowing from the primary combustion chamber 1 into the secondary combustion chamber 2 (No. 2 furnace) via the flue portion is biased toward the primary combustion chamber side (No. 1 furnace side) of the secondary combustion chamber 2. There are cases. As shown in FIG. 7, a flame adjusting plate 24 may be provided in the secondary combustion chamber 2. The flame adjusting plate 24 disturbs (blocks) the flow of gas flowing into the secondary combustion chamber 2 from the flue portion, and uniformly distributes the upward airflow in the secondary combustion chamber.

In the present embodiment, the flame adjustment plate 24 is located in the secondary combustion chamber 2 on the primary combustion chamber side (the No. 1 furnace side) of the air supply pipe 23 and at a position near the upper portion of the outlet of the flue portion 4. It is arranged. Specifically, the flame adjusting plate 24 is fixed by a metal fitting 24k. The flame adjusting plate 24 may have any shape such as a circular shape or a rectangular shape. Further, the flame adjusting plate 24 is provided with one or a plurality of vent holes having a predetermined shape, and in the present embodiment, the flame adjusting plate 24 is provided with vent holes 24a, 24b, and 24c.
The flame adjusting plate 24 inhibits a part of the rise of the flame that has flowed into the secondary combustion chamber 2 from the flue portion 4 and distributes the flame evenly in the furnace.
Further, in a state where the flame is weakened by the flame adjusting plate 24, air is supplied from the hole 23b formed in the central portion of the air supply pipe 23 or the hole 23c formed near the upper portion (the oxygen-reception state). By setting the supply state), the mixed gas can be completely combusted in the secondary combustion chamber with high combustion efficiency.

  As shown in FIG. 7A, the air supply pipe 23 provided in the secondary combustion chamber 2 is provided so as to communicate with the ventilation path 61 formed in the base portion 102. Further, in the present embodiment, an L-shaped pipe 65 (elbow pipe) is arranged in the air passage 61, and the air supply pipe 23 is detachably provided in the L-shaped pipe 65. The air supply pipe 23 is configured to be able to be taken in and out from a management port 29 provided on the back side of the secondary combustion chamber 2.

  Further, as shown in FIG. 7B, in order to enhance the durability of the inner wall of the secondary combustion chamber 2, a cylindrical portion 2f made of metal such as stainless steel can be replaced on the inner wall of the secondary combustion chamber 2. It may be provided. For example, when the metallic tubular portion 2f on the inner wall of the secondary combustion chamber is deteriorated, the incinerator can be used for a longer period by replacing the metallic tubular portion 2f with a new metallic tubular portion 2f.

<Temperature control unit 25>
As shown in FIG. 8, in the incinerator according to the embodiment of the present invention, the temperature adjusting part 25 is provided in the chimney part 21 above the secondary combustion chamber 2. The temperature adjusting unit 25 is provided to raise the temperature inside the furnace (inside the room) of the secondary combustion chamber 2 at an early stage during the initial operation of the incinerator so as to generate an updraft in a short time.
Specifically, the temperature adjusting unit 25 is provided near the entrance of the chimney unit 21 and has movable members 251 and 252 (FIGS. 8B and 8C). A bottom plate 26c made of metal is arranged on the upper surface of the secondary combustion chamber 2, a middle guide member 26b made of metal is arranged on the bottom plate 26c, and a top lid made of metal is arranged on the middle guide member 26b. The iron plate 26a is arranged.
A gap 25bh is formed in the intermediate guide member 26b, and the movable members 251 and 252 are movably arranged in the gap 25bh.

  In the initial state, as shown in FIG. 8C, the movable members 251 and 252 are closed, the flow passage cross-sectional area near the inlet of the chimney portion 21 is reduced, and heat radiation from the chimney portion 21 is suppressed. , The heating unit 5 such as a burner is used to raise the temperature in the furnace of the secondary combustion chamber 2 in a short time. Then, when the temperature inside the furnace of the secondary combustion chamber 2 reaches a predetermined temperature, for example, about 400 ° C., as shown in FIG. 8B, the movable members 251 and 252 of the temperature adjusting unit 25 are opened, The hot gas in the secondary combustion chamber 2 is exhausted from the chimney portion 21 to the outside, an ascending airflow is generated in the secondary combustion chamber 2, and the ascending force of the ascending airflow generated in the secondary combustion chamber 2 The high temperature combustion gas generated in the combustion chamber 1 and the unburned gas (incomplete combustion gas) from the vicinity of the upper part of the primary combustion chamber are sucked into the flue portion 4 and mixed, and then introduced into the secondary combustion chamber 2. You can

As described above, in the incinerator 10 according to the embodiment of the present invention, the primary combustion chamber 1 having the furnace wall of the tubular refractory material, in which the roster 11 (grate) is arranged in the lower part of the chamber, and the primary combustion chamber. 1, a storage chamber 3 provided above the primary combustion chamber 1 and capable of charging a burned material into the primary combustion chamber 1, and a secondary combustion chamber 2 provided in parallel with the primary combustion chamber 1 and having a furnace wall made of a cylindrical refractory material. , A chimney portion 21 provided in an upper portion of the secondary combustion chamber 2, a flue portion 4 that connects a lower portion of the primary combustion chamber 1 and a lower portion of the secondary combustion chamber 2, and a primary combustion chamber provided in the secondary combustion chamber 2. A heating unit 5 such as a burner for completely burning the incomplete combustion gas introduced from the combustion chamber 1 into the secondary combustion chamber 2 through the flue unit 4, and an air supply unit 6 for supplying air to the secondary combustion chamber 2. And have.
Further, the incinerator 10 is provided with a projecting portion 7a projecting from the primary combustion chamber side intake port 4a of the flue portion 4 toward the indoor side of the primary combustion chamber 1, and the projecting portion 7a causes the projecting portion 7a to move from the storage chamber 3 to the primary combustion chamber. The incomplete combustion gas intake port 8a for preventing the inflow of burned material into the flue part of the combustion chamber 1 and the incomplete combustion gas intake port 8a are located near the upper part of the primary combustion chamber, and A ventilation path is formed from the intake port 8a along the inner wall of the primary combustion chamber, and has an incomplete combustion gas recirculation path 8 communicating with the flue portion 4.
That is, incomplete combustion gas in the vicinity of the upper portion of the primary combustion chamber 1 flows into the flue portion 4 via the incomplete combustion gas recirculation passage 8, and in the flue portion 4, high temperature combustion in the lower portion of the primary combustion chamber The gas and the incomplete combustion gas are mixed, and a part or the whole of the incomplete combustion gas is combusted, which flows into the secondary combustion chamber 2 and the secondary temperature of which is kept high by the heating unit 5 such as a burner. In the combustion chamber 2, air is supplied by the air supply unit 6, and the incomplete combustion gas can be completely burned with high efficiency.

  Specifically, in the incinerator according to the embodiment of the present invention, the ascending air current generated in the secondary combustion chamber 2 is generated by the high temperature combustion gas generated in the primary combustion chamber 1 and the high temperature combustion gas generated near the upper portion of the primary combustion chamber 1. The combustion gas (incomplete combustion gas) is used as a suction force for inhaling into the flue portion 4, and the high temperature combustion gas and unburned gas (incomplete combustion gas) are mixed in the flue portion 4 to form a secondary combustion chamber. 2 can be introduced.

In addition, in the present embodiment, the flue portion 4 has the inclined portion 102k formed in the base portion 102, and the flow passage cross-sectional area of the secondary combustion chamber side discharge port 4e rather than the primary combustion chamber side intake ports 4a, 4b, 4c. Is formed to be small. That is, when the incinerator is in operation, due to the Venturi effect, the gas flow velocity is relatively high and the atmospheric pressure is relatively low near the secondary combustion chamber side exhaust port 4e, and the suction force at each intake port of the flue portion 4 is large. ..
In addition, the burned material on the upper roster 11A (11) arranged in the lower portion of the primary combustion chamber 1 is burning at a high temperature, and the flue portion 4 provided in a tunnel shape in the lower portion of the primary combustion chamber 1 High-temperature combustion gas and heat rays are directly input to the flue portion 4, and the incomplete combustion gas flowing into the flue portion 4 through the incomplete combustion gas recirculation passage 8 is heated with high efficiency, and a part of the incomplete combustion gas is generated. Alternatively, all of them can be combusted, and by introducing the gas into the secondary combustion chamber 2, the incomplete combustion gas can be completely combusted in the secondary combustion chamber 2 with high efficiency.

  In addition, the projecting portion 7a of the fire spread blocking portion 7 can easily prevent the burned material that has been introduced from the storage chamber 3 into the interior of the primary combustion chamber 1 from flowing into the flue portion 4. That is, it is possible to prevent the burned material from flowing into the flue portion 4 and spreading the fire in a state where the ventilation passage of the flue portion 4 is blocked.

  Further, the incinerator 10 according to the embodiment of the present invention has an incomplete combustion gas recirculation pipe 9 in which a communication passage is formed from the storage chamber 3 to the outside of the primary combustion chamber 1 and to the flue portion 4. .. That is, with a simple configuration, the incomplete combustion gas in the storage chamber 3 can be guided to the secondary combustion chamber 2, and the incomplete combustion gas can be completely combusted in the secondary combustion chamber 2.

  Further, the incinerator 10 according to the embodiment of the present invention is arranged in the chamber of the secondary combustion chamber 2 between the secondary combustion chamber side discharge port 4e of the flue portion 4 and the chimney portion 21, and the flue portion 4 It has a flame adjusting plate 24 for adjusting the flame from the secondary combustion chamber side discharge port 4e so as to be uniform inside the secondary combustion chamber 2. That is, the flame adjustment plate 24 inhibits a part of the rise of the flame that has flowed into the secondary combustion chamber 2 from the flue portion 4 and distributes the flame evenly in the secondary combustion chamber 2, thereby increasing the combustion of the mixed gas. It can be burned efficiently and completely.

Next, the effects of the incinerator according to the above-described embodiment of the present invention will be described in a list.
1. As a material to be burned, for example, no residue is produced with respect to plant-based and paper-based organic matter.
In most conventional small incinerators, residues are accumulated in the furnace after incineration. When processing the residue, it is necessary, for example, to report it to the relevant government agency and carry it out to a facility with an incineration permit. As described above, the incinerator according to the embodiment of the present invention has the upper roster 11A and the lower roster 11B, and since the lower roster 11B is set to a narrower interval than the interval of the upper rostrut 11A, the burned material Can be completely burned, and the accumulation of residue is very small.
The inventor of the present application actually manufactured the incinerator according to the present invention and conducted an incineration experiment. As a result of the experiment, it was confirmed that the residue was very small, the organic matter was completely burned, and only ash remained.

2. Recirculation processing of incomplete combustion gas in the primary combustion chamber 1 (primary incinerator).
In a conventional small incinerator, incomplete combustion gas may remain in the furnace. As described above, the incinerator according to the embodiment of the present invention has the incomplete combustion gas recirculation section (incomplete combustion gas recirculation path 8) in the vicinity of the upper portion of the primary combustion chamber 1, and the flue section 4 It is configured to burn. Smoke flowing into the storage (storage chamber 3) is output to the flue by a duct pipe (recirculation pipe 9 for incomplete combustion gas) and sent into the secondary combustion chamber (No. 2 furnace) where it is heated to a high temperature. Complete combustion in the furnace of the secondary combustion chamber 2 can suppress the generation of toxic gases such as dioxins.

3. Dispersed heating of combustion gas in the secondary combustion chamber 2 (No. 2 furnace).
When the flame adjusting plate 24 is not provided, the upward flow of the combustion gas flowing into the secondary combustion chamber 2 (No. 2 furnace) is not uniform. Specifically, the flame flows upward from the outlet of the communication passage provided at the lower portion of the secondary combustion chamber 2 to the secondary combustion chamber 2, but when viewed from above, the flue inside the secondary combustion chamber 2 is increased. The flame may be biased toward the side of the outlet of the section 4. In that state, when air is introduced and oxygen is supplied, a tailwind state is obtained.
As described above, the incinerator according to the embodiment of the present invention has a flame adjusting plate that shields a part of the gas flow path on the outlet side of the flue portion 4 in a top view of the secondary combustion chamber (inside the furnace). 24 (control board). The flame adjusting plate 24 is formed in a predetermined shape such as a circular shape or a rectangular shape. By providing the flame adjustment plate 24, turbulence is generated in the flow path from the outlet of the flue portion 4 to the chimney, the flame is diffused, and oxygen (air) is supplied from the air supply pipe in a headwind state. Then, after the incomplete combustion gas is completely burned with high efficiency, the combustion gas can be discharged from the chimney portion 21.

4. Increasing the initial temperature of the secondary combustion chamber (No. 2 furnace) The temperature of the secondary combustion chamber (No. 2 furnace) is increased by the heating unit 5 such as a burner, and an ascending air current is generated in the secondary combustion chamber. As a result of an experiment by the inventor of the present application, when the inside of the secondary combustion chamber 2 (inside the furnace) is about 400 ° C. or higher, the ascending airflow can be generated in the secondary combustion chamber 2 with high efficiency. Further, as described above, in the present embodiment, the plate is provided as the temperature adjusting unit 25 at the mounting portion of the chimney portion 21 of the secondary combustion chamber 2. By closing the plate of the temperature adjusting unit 25 during the initial heating, wasteful heat dissipation to the chimney unit 21 can be suppressed, and the temperature inside the secondary combustion chamber 2 can be raised in a short time. Moreover, the heating time by the burner as a heating part can be shortened, and the secondary combustion chamber 2 can be heated at low cost.

5. Economic efficiency of maintenance management In the incinerator according to the embodiment of the present invention, castable (fireproof concrete) is used for the inner walls of the primary combustion chamber 1 and the secondary combustion chamber 2 to form heat resistant walls. Heat-resistant materials generally sold by heat-resistant material manufacturers have a heat resistance of about 1200 ° C. When a conventional general incinerator is incinerated at a high temperature of 800 ° C. or higher for several years, the castable surface may become powdery and fall off. The conventional small incinerator had a life at that time.
The incinerator according to the embodiment of the present invention is provided with a storage (storage chamber 3) on the upper part of the primary combustion chamber 1 in a detachable manner. Further, a chimney pedestal is detachably provided on the upper portion of the secondary combustion chamber 2. In consideration of durability, it is preferable to set the furnace temperature of the secondary combustion chamber 2 to about 800 to 850 ° C.
As described above, since the storage chamber 3 and the chimney stand are detachable in the incinerator, the incinerator can be easily maintained, the incinerator can be used for a long time, and the economical efficiency of maintenance is excellent. ing.

6. Effect of Spreading Blocking Section The incinerator according to the embodiment of the present invention has the flue section 4 between the primary combustion chamber 1 and the secondary combustion chamber 2. Using the upward airflow generated in the secondary combustion chamber 2 as suction force, the high temperature combustion gas generated in the primary combustion chamber 1 and the unburned gas (incomplete combustion gas) from the vicinity of the upper portion of the primary combustion chamber are flue part 4 The air is sucked into and mixed with, and introduced into the secondary combustion chamber 2 with high efficiency. A fire spread blocking unit 7 (fire spread blocking box) is provided on the primary combustion chamber side of the flue portion 4. The fire spread blocking portion 7 is formed with a protruding portion 7 a that protrudes inward (in the center of the primary combustion chamber) from the inner wall of the primary combustion chamber 1.
For example, when the suction force of the flue portion 4 is reduced, unburned gas (incompletely burned gas) may flow out of the furnace, which may be annoying to the living environment and violate pollution control measures.
Since the incinerator according to the embodiment of the present invention includes the fire spread blocking section 7, it is possible to prevent the flue section 4 from being blocked by the burned material with a simple configuration, and the suction of the flue section 4 is prevented. It is possible to prevent a decrease in power.

7. A cylindrical metal plate (stainless steel, etc.) provided on the inner wall surface of the secondary combustion chamber (No. 2 furnace).
The incinerator according to the embodiment of the present invention can maintain the combustion temperature in the secondary combustion chamber at about 800 ° C to 850 ° C during combustion. When the temperature in the secondary combustion chamber drops during combustion, an auxiliary burner that uses oil, combustible gas, or the like is operated as a heating unit to raise the temperature. In addition, the incinerator is equipped with a temperature sensor as a temperature detection unit to manage the combustion temperature. For example, the combustion temperature changes depending on the type and state of the burned material (burned material). The incinerator according to the embodiment of the present invention is provided with a cylindrical plate (cylindrical portion 2f) made of metal such as stainless steel inside the secondary combustion chamber 2 in order to maintain the temperature in the secondary combustion chamber (inside the furnace). It is possible to reduce the cost spent on the fuel used for the auxiliary burner. Further, it is preferable that the tubular portion 2f be replaceable.

In addition, it is preferable that the incinerator according to the embodiment of the present invention is small in size and has a fire floor area of less than 0.5 m ² .

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and there are changes in design within the scope not departing from the gist of the present invention. However, it is included in the present invention.
Further, the embodiments shown in the above-described drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and the configuration.
The description of each drawing may be an independent embodiment, and the embodiment of the present invention is not limited to one embodiment in which the drawings are combined.
The incinerator according to the embodiment of the present invention further includes a spiral heat conductive pipe between the heat insulating material 27 of the secondary combustion chamber 2 and the outer wall (furnace wall 2a) of the secondary combustion chamber 2, A liquid such as water may be circulated as a heat medium with a tank provided outside the chamber 2 by a pump or the like. That is, the heat generated in the incinerator may be used for melting snow, heating an agricultural house, or the like.

DESCRIPTION OF SYMBOLS 1 ... Primary combustion chamber 2 ... Secondary combustion chamber 3 ... Storage chamber 4 ... Flue part 4a ... Primary combustion chamber side intake port 4b, 4c ... Intake port 4e ... Secondary combustion chamber side discharge port 4t ... Flue tube Upper part of the shaped part 5 ... Heating part (burner)
6 ... Air supply part 6A ... Blower 7 ... Spreading-fire interception part 7a ... Projection part 7c ... Opening part 8 ... Incomplete combustion gas recirculation passage 9 ... Incomplete combustion gas recirculation pipe 10 ... Incinerator 11 ... Lostor 11A ... Upper rostrtor 11B ... Lower part 21 ... Chimney part 23 ... Air supply pipe 24 ... Flame adjusting plate 25 ... Temperature adjusting part (temperature adjusting plate)
51 ... Temperature detection part 52 ... Control part 61 ... Ventilation path

Claims (2)

A primary combustion chamber having a tubular furnace wall formed by a refractory material, in which a roster is arranged in the lower part of the room,
A storage chamber that is provided in the upper portion of the primary combustion chamber and is capable of introducing a burned material into the primary combustion chamber,
A secondary combustion chamber provided in parallel with the primary combustion chamber, and having a cylindrical furnace wall formed of a refractory material,
A chimney portion provided at the upper part of the secondary combustion chamber,
A flue part that connects the lower part of the primary combustion chamber and the lower part of the secondary combustion chamber,
A heating unit that heats the interior of the secondary combustion chamber and completely combusts the incomplete combustion gas introduced from the primary combustion chamber to the secondary combustion chamber through the flue portion,
An incinerator having an air supply unit for supplying air to the secondary combustion chamber,
The flue section has a protrusion that protrudes from the primary combustion chamber side intake port toward the indoor side of the primary combustion chamber, and the burned material that is thrown into the primary combustion chamber from the storage chamber by the protrusion. A fire spread blocking section that prevents the flow into the flue section,
The intake port for incomplete combustion gas is located near the upper part of the primary combustion chamber, and a ventilation path is formed from the intake port for incomplete combustion gas along the inner wall of the primary combustion chamber and communicates with the smoke channel. An incomplete combustion gas return path,
Inside the secondary combustion chamber, the secondary combustion chamber side discharge port of the flue section is arranged between the chimney section, and the flame from the secondary combustion chamber side discharge port of the flue section is treated as the secondary It has a flame adjustment plate that is adjusted to be uniform in the combustion chamber,
The grate provided in the lower part of the primary combustion chamber comprises an upper grate and a lower grate having a narrower gap than the upper grate,
A space between the upper gust and the lower gust, a space below the lower gust, and a space above the upper gust communicate with the lower part of the secondary combustion chamber via the flue section. An incinerator characterized by   The incinerator according to claim 1, further comprising a recirculation pipe for an incomplete combustion gas, in which a ventilation passage is formed that communicates with the flue portion from the storage chamber through the outside of the primary combustion chamber.

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