JP4348544B2 - Open air shut-off device for incinerator - Google Patents

Description

  The present invention relates to an outside air shut-off charging device attached to an incinerator for incinerating waste as a combusted material, and more particularly, to an incinerator for charging a lightweight incinerated material such as styrofoam as a combusted material. The present invention relates to an outside air shutoff charging device for an incinerator.

  Conventionally, regarding incineration using light incineration waste such as polystyrene foam as combustibles, the combustibles are completely transferred into the incinerator when the combustibles are put into an outside air shut-off charging device. Without being attached to the outside air shut-off charging device, which may prevent the addition of additional combustibles, which has been a problem.

  According to the invention described in Patent Document 1, “a furnace body having a rooster at the bottom and having a waste inlet on the front wall to form a primary combustion chamber, and communicating with the furnace body portion from the primary combustion chamber An exhaust cylinder having a burner for heating the flowing combustion gas, a secondary air supply pipe that communicates with the exhaust cylinder and has an exhaust port at the upper end and supplies pressurized air into the cylinder are arranged concentrically. A small-scale incinerator comprising a combustion cylinder forming a secondary combustion chamber; and the waste input port of the small-scale incinerator is provided such that the waste input port can be opened and closed, and the waste input port is closed. A small-scale incinerator with an outside air shut-off device is described which comprises an outside air shut-off device that can throw waste into the primary combustion chamber in the furnace. However, in the outside air shut-off device, no measures are taken against adhering in the outside air shut-off device when a lightweight incinerated waste such as foamed polystyrene is thrown in as a combustible.

  Further, the invention described in Patent Document 2 states that “a roastol is provided at the bottom of the incinerator body forming the primary combustion chamber, and an incinerator inlet and an incineration ash outlet are provided at one end of the incinerator body. The incinerator inlet and the incineration ash outlet each have a sealing door that can be opened and closed, and the sealing door of the incineration ash outlet has a combustion air supply control port, while the other end of the incinerator body The closed side is provided with a combustion cylinder that communicates with the primary combustion chamber to form a secondary combustion chamber and an exhaust cylinder that communicates with the combustion cylinder, and the combustion cylinder communicates with the secondary combustion chamber to raise the temperature of the combustion gas. In addition, a pair of temperature raising burners for supplying air is provided so as to face each other, and a mesh member is provided at the connecting portion between the combustion cylinder and the exhaust cylinder. However, this invention is to inject the combusted material directly into the incinerator, and is not an invention about an outside air shut-off device.

  In addition, the invention described in Patent Document 3 states that “a rooster is installed at the bottom of a vertical incineration cylinder having a dust inlet and a chimney at the top, and an air supply cylinder is erected through the rooster at the center of the incineration cylinder. The blower is connected to the base end of the air supply tube, the tip of the air supply tube is closed, a large number of air holes are formed in the peripheral wall, and the outer periphery of the air supply tube is covered with a metal protective net larger than its outer diameter "I did it". However, this invention is to inject the combusted material directly into the incinerator, and is not an invention about an outside air shut-off device.

JP 2003-314810 A (second page, right column, lines 28 to 38, and FIGS. 1 to 4) JP 2000-18532 A (page 2, right column, lines 3 to 13 and FIGS. 1 to 2) Japanese Patent Laid-Open No. 10-185150 (second page, left column, lines 23 to 29, and FIG. 1)

  By the way, because dioxins generated by incineration of waste may have a serious impact on human life and health, special measures to prevent dioxins have been established to prevent and remove environmental pollution caused by dioxins. Law (No. 105 of 1999) ”was enacted, and dioxin emission standards were established for small incinerators (incineration capacity 50-200 kg / h).

The emission standard is a dioxin concentration of 5 ng-TEQ / m ³ N.

  In addition, the Ministry of the Environment, in March 2001, issued a partial revision of the “Enforcement Regulations on Law on Waste Disposal and Cleaning (Ministry of Health and Welfare No. 35 of 1971)” based on the “Dioxin Measures Special Measures Law”. It was promulgated on the 26th and has been in effect since December 2002.

The amendments are as follows.
The structure specified by the Ordinance of the Ministry of the Environment of Article 1-7, Article 3, Item 2a is as follows.

1. Waste is incinerated when the temperature of the gas generated in the combustion chamber (hereinafter referred to as “combustion gas”) is 800 degrees Celsius or higher without contact between the incineration facility other than the air intake and the tip of the chimney and the outside air. It must be possible.
2. The amount of air required for incineration shall be ventilated.
3. Waste must be able to be put into the combustion chamber in a state of being shut off from the outside air (except for incineration facilities that are recognized as unavoidable due to other structures of the gasification combustion method).
4). A device for measuring the temperature of combustion gas during combustion is provided.
5. The auxiliary combustion equipment necessary to maintain the temperature of the combustion gas is provided.

  Accordingly, an incinerator described in Patent Document 1 has been developed to meet the above standards. Among the inventions of the incinerator, the outside air shut-off device is compatible with “that waste can be thrown into the combustion chamber in a state of being shut off from the outside air”.

Incidentally, the following problems have been pointed out when a lightweight incinerated waste such as styrene foam or the like is thrown into the outside air blocking charging device as a combusted material. That is,
1. In the case of a conventional outside air shut-off device, when the inner wall of the outside air shut-off device reaches a high temperature due to the amount of heat generated by incineration in the incinerator, it is softened or melted when a lightweight incinerated waste such as styrene foam is thrown in. It sticks to. Once the lightweight incinerated product is stuck, it becomes difficult to put in the subsequent lightweight incinerated product. Further, when the lightweight incinerated product is cooled and solidified, it is necessary to recover by removing the lightweight incinerated product.
2. There is a limit to increasing the volume for storing the combustible in the outside air shut-off charging device. On the other hand, the styrene foam, which is a lightweight incinerator, has a low specific gravity because 95% is air, and the mass ratio of the combustible The volume for is enormous. When performing a charging operation for charging a combustible with a conventional external air shut-off charging device, the volume of the combustible in the external air shut-off charging device is limited. However, the work is extremely large and extremely difficult. In particular, in the outside air shut-off and charging device described in Patent Document 1, there is a limit to the volume in which the combusted material is accommodated because the combusted material is input from the side surface. Therefore, when the foamed polystyrene, which is a lightweight incinerator, is charged, it is desirable that the structure requires a larger volume and can be continuously charged easily.

  However, the solutions to these problems are not shown in Patent Documents 1 to 3.

  Therefore, the present invention has been made in view of the above, and in an outside air shut-off charging device for charging a lightweight incinerated material such as polystyrene foam as a combusted material, the outside air is shut off by the amount of heat generated by the incinerator for incinerating the combusted material. When the inner wall of the charging device reaches a high temperature and a lightweight incinerated waste such as styrofoam is charged, it is prevented from softening or melting and adhering to the wall surface. It is an object to increase the volume to be processed and to enable continuous charging. Furthermore, of course, the outside air shut-off device clears the standard for incinerators, “Enforcement Regulations on Waste Disposal and Cleaning (Ministry of Health and Welfare Ordinance No. 35 of 1971)” (enforced in December 2002). To do is also an issue.

  In order to achieve the above-mentioned object, the following measures are taken in the outside air shutoff charging device of the present invention.

The present invention according to claim 1 is an outside air shut-off device that is an input structure for introducing an object to be burned, which is a lightweight incinerator, into the incinerator, and is a casing that constitutes the outer shell of the external air shut-off device. A shutter, a charging door provided at the top of the outside air shut-off device, an outside air shut-off door attached immediately before the incinerator, and an outside air shut-off device for opening and closing the outside air shut-off device. and a turned lever having a rotating structure, incinerator constructed from the wind pressure device for supplying air for performing smoothly introduced into the interior incinerator body while wind conveyed from the rear the inserted該被combustion product In the outside air shutoff charging device , the wind pressure device is connected to the blower installed on the outer surface of the incinerator body, and connected to the input air ventilation tube and installed on the back side of the outer surface of the shooter Air blowing pipe and the air A bottom surface of the shooter that is connected to the wind pipe and that supplies air from the upper part inside the shooter, and the outside air shut-off device is a joint portion between the shooter and the incinerator body made of steel plate A chamber box is provided at the bottom of the chamber, and an air flow passage is formed by providing a plurality of small holes in the chamber box, and the wind pressure device has a chamber air blower pipe branched from the input air blower pipe, The chamber air blowing pipe supplies air to a chamber box provided on the lower side of the outer surface of the shooter, and the supplied air supplies air from a plurality of small holes provided in the chamber box to the inside of the incinerator body. As a result, the combustibles that have arrived in the vicinity of the incinerator body are moderately absorbed by the air ejected upward from the plurality of small holes of the chamber box. The furnace side thick part and the equipment side thick part, which are the thick parts of the furnace side inlet made of fire-resistant cement, which is the mounting part of the outside air shutoff charging device to the incinerator body, and the thick part of the charging device side inlet It is an outside air shut-off device for an incinerator characterized in that it falls into the incinerator without being affected by the frictional resistance of the incinerator.

  In claim 1 of the present invention, by providing a wind pressure device, it is possible to convey the thrown-in combusted object from behind and wind pressure for smoothly throwing it into the incinerator body. It is like that.

  In other words, when the bottom surface of the shooter, which is a surface for sliding the combusted material inside the shooter, is installed with a gradient to the upper position with respect to the furnace body side inlet of the incinerator, the incinerator inlet provided at the upper position of the shooter The combustible material thrown in from is dropped onto the bottom surface of the shooter with a gradient, and is conveyed while sliding on the bottom surface of the shooter toward the incinerator body by the wind pressure by the wind pressure device installed above the shooter.

Further, in the above wind pressure device, the combustion object can be transported into the incinerator body by applying wind pressure from the upper part inside the shooter by the air blower pipe provided inside the shooter.

  That is, the said wind pressure apparatus conveys to-be-combusted material inside an incinerator body, sliding on the bottom face of a shooter with the wind pressure by the injection of the air from the air supply pipe installed above the shooter.

This is because, in the above-described wind pressure device, the air supplied to the chamber box provided at the lower part of the bottom surface of the shooter is supplied into the incinerator body by ejecting air upward from a plurality of small holes provided in the chamber box. Therefore, the combustible can be dropped into the incinerator body.

  In other words, the combustibles that have arrived near the incinerator body will float up moderately due to the air ejected upward from a plurality of small holes provided in the chamber box attached near the junction between the shooter and the incinerator body. Thus, it is introduced into the furnace body side inlet and falls into the incinerator body.

  From the above description, the outside air shutoff charging device of the present invention has the following effects.

  A lightweight incineration material such as polystyrene foam did not adhere to the outside air shutoff charging device of the present invention, and could be charged into the incinerator.

  In addition, the outside air shut-off device according to the present invention can increase the volume of the outside air shut-off device, which makes it possible to load a lighter incinerator having a larger capacity than before, and facilitates continuous workability. became.

  Furthermore, the outside air shut-off device of the present invention clears the standard for incinerators, “Enforcement Regulations on Waste Disposal and Cleaning (Ministry of Health and Welfare Ordinance No. 35 of 1971)” (enforced in December 2002). To do.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view of a side view of an embodiment of the outside air shutoff charging device of the present invention. FIG. 2 is a front view of an incinerator equipped with the outside air shut-off device of the present invention. FIG. 3 is a cross-sectional view of the side view of FIG. 2 for explaining the air flow of the outside air shut-off device. FIG. 4 is a cross-sectional view of the side view of FIG. 2 and is a view for explaining a state in which a combustible material is charged into the outside air blocking charging device. FIG. 5 is a cross-sectional view of the side view of FIG. 2 and is a view for explaining the principle of charging the combusted material into the incinerator.

  FIG. 6 is a cross-sectional view taken along line AA of FIG. 2 for explaining the temperature raising burner of the incinerator. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 2 for explaining the level difference of the incinerator body of the incinerator. FIG. 8 is a partial view for explaining the burner protective cover of the temperature raising burner.

  First, with reference to FIGS. 1 to 5, an embodiment of the outside air shut-off device of the present invention will be described. The basic configuration of the incinerator to which the outside air shutoff charging device of the present invention is attached will be described later mainly based on FIGS. 1 and 2 and FIGS.

  As shown in FIGS. 1 to 5, the outside air shutoff charging device 1 of the present invention is attached to an incinerator body 2 of an incinerator 5.

  In other words, the outside air blocking charging device 1 is a device having a charging structure for charging a lightweight incinerated material such as styrene foam into the incinerator 5 as the combusted material 51, and is a casing that constitutes an outline of the outside air blocking charging device 1. Shutter 11, charging door 12 provided at the top of the outside air shutoff charging device 1, outside air shutting door 13 attached just before the incinerator body 2, and shutting off the outside air to open and close the outside air shutting door 13 The charging lever 14 having a rotating structure provided outside the charging device 1 and the charged combustion object 51 are wind-powered from the rear and supplied with air for smoothly charging into the incinerator body 2. A wind pressure device 15.

  The wind pressure device 15 includes an input air blower pipe (not shown) connected to a blower installed on the outer surface of the incinerator body 2, and is connected to the input air blower tube and is connected to the outer surface of the shooter 11. The air blower pipe 151 is provided on the back surface side, and the air supply pipe 152 is connected to the air blower pipe 151 and supplies air from the upper part inside the shooter 11.

  Here, as the blower, a blower 46 installed on the back surface side of the outer surface of the incinerator body 2 is used, or a blower (not shown) is newly installed on the outer surface of the incinerator body 2. Can also be used. In particular, when the capacity (discharge pressure, air volume, etc.) of the blower 46 is insufficient, a new blower may be installed.

  The wind pressure device 15 has a chamber air blow pipe 153 branched from the input air blow pipe, and the chamber air blow pipe 153 supplies air to a chamber box 154 provided on the lower side of the outer surface of the shooter 11. , And the supplied air is supplied into the incinerator body 2 through a plurality of small holes 155, 155... Provided in the chamber box 154. In other words, the input air blower pipe branches to become an air blower pipe 151 and a chamber air blower pipe 153.

  As described above, the outside air shut-off device 1 according to the present invention sends air from the air blowing pipe 152 along the inner side of the housing of the shooter bottom surface 111, which hits the bottom surface of the shooter 11, which is the housing. In order to obtain sufficient acceleration with respect to the frictional resistance with the shooter bottom surface 111, a light pressure incineration material such as polystyrene foam is provided, and a wind pressure device 15 is provided.

  1 to 5, the shooter bottom surface 111 is mounted obliquely upward with respect to the incinerator body 2 in order to allow the combusted object 51 to fall spontaneously. It falls to the furnace body inlet 23 side with the pressure of the air ejected from the tube 152. Note that the shooter bottom surface 111 is not limited to being attached obliquely upward, and may be attached horizontally. At this time, the combustible 51 falls to the furnace body side inlet 23 side by the pressure of air ejected from the air supply pipe 152 or is pushed out to the furnace body side inlet 23 side by human power. become.

  Explaining supplementarily, the outside air shut-off device 1 is configured to send light from the air supply pipe 152 along the bottom surface 111 of the shooter so that a lightweight incinerated material such as styrene foam introduced while cooling the shooter 11, particularly the bottom surface 111 of the shooter, is shooter. There is provided a blower for preventing the adhesion to the bottom surface 111 and setting the air volume, wind pressure, etc. for the lightweight incinerator to slide with sufficient acceleration with respect to the friction coefficient of the shooter bottom surface 111.

  Further, the outside air shut-off device 1 is provided with a chamber box 154 in the vicinity of the joint portion between the shooter 11 and the incinerator body 2, that is, at the lower part of the bottom surface 111 of the shooter, and the chamber box 154 has a plurality of small holes 155, 155,. By forming the air flow path provided with the air, the lower part of the outside air blocking door 13 and the bottom of the shooter bottom surface 111 and the incinerator body 2 which are heated by the air ejected from the plurality of small holes 155, 155,. Makes it possible to smoothly slide lightweight incineration materials such as polystyrene foam, and to prevent light incineration materials such as polystyrene foam from adhering to the outside air blocking door 13 and the shooter bottom surface 111 and from adhering to the incinerator body 2, and at the same time The lightweight incineration product is configured to drop into the incinerator body 2 while floating from the shooter bottom surface 111.

  More specifically, since the incinerator 2 is made of fire-resistant cement that can withstand heat and fire, it forms an end surface of the peripheral portion of the furnace-side inlet 23 that is opened in order to introduce the combustible 51. The furnace body side thick part 231 is made of fireproof cement. Similarly, since the charging device side charging port 25 which is an attachment portion of the outside air blocking charging device 1 to the incinerator body 2 is also made of refractory cement, it is opened to the charging device side loading port 25 for charging the combustibles 51. The device-side thick portion 251 that is the end surface of the peripheral portion of the opening 252 is made of fireproof cement.

  By the way, the surface made of refractory cement has a high coefficient of friction and is difficult to slip. In other words, since the surface made of refractory cement is rough, it is not slippery with respect to the combustible object 51 of a lightweight incinerated product such as polystyrene foam. That is, the combustibles 51 in the furnace-side thick portion 231 and the apparatus-side thick portion 251 that are made of refractory cement are in a state of being slippery and easily caught due to frictional resistance, and therefore, a plurality of small objects provided in the chamber box 154 are provided. The burned object 51 is floated and dropped into the incinerator body 2 by the air ejected from the holes 155, 155,.

  More specifically, since the shooter 11 (including the shooter bottom surface 111 of course) is made of a steel plate, the coefficient of friction is lower than that of refractory cement, so that the combustible 51 is easy to slide on the shooter bottom surface 111. Since it is difficult to slip on the furnace body side thick part 231 and the apparatus side thick part 251 made of refractory cement, the combustion object 51 is floated by the air ejected from the plurality of small holes 155, 155. It is dropped into the body 2.

  The air ejected from the plurality of small holes 155, 155,... Is set so as to be ejected obliquely upward in FIG. The direction of the plurality of small holes 155, 155,... May be such that the light incineration material that is the combusted object 51 is levitated by the air ejected and falls into the incinerator body 2.

  Here, the charging process of the combustibles 51 in the outside air blocking charging device 1 will be summarized with reference to FIGS. FIG. 1 is a side view of an embodiment of the outside air shut-off device according to the present invention, FIG. 2 is a front view of an incinerator equipped with the outside air shut-off device, and FIG. FIG. 4 is a diagram for explaining a flow, FIG. 4 is a diagram for explaining a state in which a combustible material is charged into the outside air shut-off charging device, and FIG. 5 is a diagram illustrating a principle of charging the combustible material into the incinerator. It is drawing for demonstrating. In addition, the arrow attached to FIG.1, FIG3 and FIG.5 shows the flow of air.

  As shown in FIGS. 1 and 3, the door 12 is opened by opening and closing a door handle 121 attached to the door 12 provided on the upper portion of the shooter 11, and then light weight such as polystyrene foam is used. An incinerated product 51, which is an incinerator, is introduced into the shooter 11 from the incinerator input port 16.

  Next, as shown in FIGS. 3 to 5, when the shooter bottom surface 111 of the shooter 11 is installed with a gradient to the upper position with respect to the incinerator body 2, the incinerated material provided at the upper position of the shooter bottom surface 11. When the combusted object 51 input from the input port 16 is dropped onto the sloped shooter bottom surface 111, the combusted object 51 naturally falls and the air supply pipe 152 of the wind pressure device 15 installed on the upper part of the shooter 11. It moves while sliding on the bottom surface of the shooter 111 in the direction of the incinerator body 2 due to the wind pressure of the blown air.

  Next, as shown in FIGS. 1 and 5, when the closing lever 14 having a rotating structure with the lever support shaft 141 as a fulcrum is rotated clockwise in FIG. 1, the outside air fixed to the lever support shaft 141 is rotated. The shut-off door 13 rotates clockwise to a position 13a shown in FIG. 5 and opens the charging device side charging port 25, thereby charging the burned material 51 into the incinerator body 2 and burning the burned material 51. Is completed.

  At this time, as shown in FIGS. 3 to 5, the combustible 51 that has arrived in the vicinity of the incinerator body 2 has a plurality of small holes 155, 155 provided in the vicinity of the joint between the shooter 11 and the incinerator body 2. ... Thickened portions of the furnace-side inlet 23 and the charging-apparatus-side inlet 25 made of refractory cement, which are attached to the incinerator body 2 of the outside-air shut-off apparatus 1. Are dropped into the incinerator body 2 without being affected by the frictional resistance of the furnace body side thick part 231 and the apparatus side thick part 252, and charging of the combustibles 51 into the incinerator body 2 is completed. .

  Next, the charging lever 14 is rotated counterclockwise, the outside air blocking door 13 is closed, and the next combustible material 51 is charged through the incineration material charging port 16. The above is repeated and continuous feeding is performed.

  According to the outside air shut-off device 1, since the combustible 51 can be accommodated from the upper part to the lower part of the shooter 11, a conventional outside air shut-off device (for example, the outside air disclosed in Patent Document 1). As compared with the shut-off charging device), the charging volume is increased, and the styrene foam or the like that is the combustible material 51 can be accommodated more at once.

  Next, the incinerator 5 to which the outside air shutoff charging device 1 of the present invention is attached will be described. In the structure of the incinerator 5 to be described below, plastics (hereinafter, abbreviated as waste plastic) as the waste to be combusted 51 is described. The present invention can also be applied to a lightweight incinerated waste such as styrene foam which is the combustible 51. That is, both the combusted material 51 of the outside air shut-off charging device 1 and the combusted material 51 of the incinerator 5 can be applied to wastes typified by foamed polystyrene and the like, waste plastics such as hard materials, soft materials, and foam materials. However, the combustible 51 is not limited. In general, when it is called waste plastic, it means waste such as synthetic resin products and materials including hard materials, soft materials, foam materials, and the like.

  Next, the basic configuration of the incinerator 5 will be described with reference to FIGS. As shown in the figure, a rooster 22 is provided in the lower part of the incinerator body 2 that forms the primary combustion chamber 21 for burning the combustible 51, and the incinerator body 2 has an incinerator inlet 23 and a combustion ash outlet 24. The incinerator input port 23 is provided with an open air shut-off door 13 that can be opened and closed, the combustion ash discharge port 24 is provided with a discharge port sealing door 26 that can be opened and closed, and the upper surface of the incinerator body 2 An incinerator 5 is provided with an exhaust cylinder 3 communicating with a primary combustion chamber 21, forming a secondary combustion chamber 41 communicating with the exhaust cylinder 3 and having a combustion cylinder 4 having an exhaust port 42 at the upper end.

  2 to 5, an exhaust cylinder 3 is provided on the upper surface of the incinerator body 2, a combustion cylinder 4 is provided on the upper part of the exhaust cylinder 3, and a secondary combustion chamber 41 is formed in the combustion cylinder 4. However, the exhaust port 42 may be provided at the upper end, but the secondary combustion chamber 41 may be formed in the exhaust tube 3 and the exhaust port 42 may be provided at the upper end. That is, in FIG. 2 to FIG. 5, the exhaust cylinder 3 and the combustion cylinder 4 are connected with a plurality of bolts and nuts via flanges, respectively, but the combustion cylinder 4 is abolished and the secondary combustion chamber is connected to the exhaust cylinder 3. 41 may be formed and an exhaust port 42 may be provided at the upper end. When the exhaust cylinder 3 and the combustion cylinder 4 are connected, the secondary combustion chamber 41 is also formed in the exhaust cylinder 3 because the exhaust cylinder 3 and the combustion cylinder 4 communicate with each other. .

  Further, in the combustion cylinder 4, a secondary air supply pipe 43 for supplying pressurized air into the secondary combustion chamber 41 is disposed concentrically with the combustion cylinder 4, and the lower end is looked into the exhaust cylinder 3. Yes. In the incinerator 5 in which the combustion cylinder 4 described above is eliminated, the secondary combustion chamber 41 is formed in the exhaust cylinder 3 and the exhaust port 42 is provided in the upper end portion, the secondary combustion chamber is provided in the exhaust cylinder 3. A secondary air supply pipe 43 that supplies pressurized air into 41 is disposed concentrically with the exhaust cylinder 3.

  The lower end surface of the secondary air supply pipe 43 is closed, and a number of air injection holes 44 are formed in the peripheral wall. These air injection holes 44 are set such that the upper half of the secondary air supply pipe 43 has an appropriate hole diameter and the lower half is set slightly larger than the hole diameter of the upper half. The air injection hole 44 is provided so as to inject in a spiral direction when viewed from above. Thereby, clean combustion can be performed by the cyclone effect, and generation and discharge of dust can be reduced. The upper end of the secondary air supply pipe 43 communicates with the blower 46 via the secondary air blower pipe 45.

  That is, the air supplied from the blower 46 to the secondary air supply pipe 43 through the secondary air blower pipe 45 is injected into the combustion cylinder 4 through the air injection hole 44. Therefore, since the air flow decreases as it approaches the lower end of the secondary air supply pipe 43, if it is to be discharged evenly with respect to the longitudinal axis direction of the secondary air supply pipe 43, it is drilled in the lower half. The diameter of the air injection hole 44 to be made must be slightly larger than the diameter of the hole formed in the upper half.

  In addition, an outside air blocking charging device 1 is provided at the incineration material charging port 23. An outside air blocking door 13 is provided at the incineration material inlet 23. The outside air shut-off door 13 is used to shut off the outside air, so that the temperature of the gas generated in the incinerator body 2 is not more than 800 degrees Celsius without contact between the inside of the incinerator body 2 and the outside air. Combustibles can be incinerated. That is, the outside air shut-off device 1 clears the regulations based on the special measures law against dioxins.

  The other details of the incinerator 5 are the same as those of the waste incinerator described in Japanese Patent Application Laid-Open No. 2003-314810 by the same applicant, and are omitted in this specification.

  The general structure of the incinerator has been described above. Next, steps in the temperature rising burner and the incinerator body will be described.

  First, the temperature raising burner will be described with reference to FIGS. The pair of temperature raising burners 6 and 6 raise the temperature of the combustion gas flowing from the primary combustion chamber 21 to the exhaust pipe 3, and the mounting angle α is set so that the combustion gas easily flows upward into the exhaust pipe 3. So that the flames of the pair of temperature raising burners 6 and 6 circulate in a spiral shape in the exhaust tube 3. Has been placed. The height difference h is such that the flame easily circulates in a spiral shape across the entire top and bottom of the exhaust tube 3.

  Note that an appropriate angle of the upper angle α is 10 degrees according to experiments. However, since it seems that the cylinder diameter of the exhaust tube 3 influences the upper angle α appropriately, it is not limited to 10 degrees. Also, the temperature raising burner 6 is installed in a state offset from the center of the exhaust tube 3 by a separation distance β from the center so that the flame circulates in a spiral shape in the exhaust tube 3. ing. In addition, the flame of the said temperature raising burner 6 is circulating counterclockwise in FIG. Thereby, clean combustion can be performed by the cyclone effect, and generation and discharge of dust can be reduced.

  That is, in the incinerator 5 of FIGS. 2 to 6, the pair of temperature raising burners 6 and 6 are arranged with a height difference h from each other, and the flame of the pair of temperature raising burners 6 and 6 is contained in the exhaust pipe 3. Can be burned in a spiral shape to achieve complete combustion of the combustible 51. The combustible 51 includes waste plastic, wood, paper, and other waste. The incinerator 5 is designed to achieve complete combustion of the waste plastic.

  Further, by connecting the exhaust cylinder 3 and the combustion cylinder 4, the exhaust cylinder 3 and the combustion cylinder 4 are integrated to increase the substantial volume of the secondary combustion chamber 41, and the pair of temperature raising burners. 6 and 6 are installed with an appropriate height difference h in the vertical direction, the high-temperature volume of the secondary combustion chamber 41 is substantially further increased, and black smoke and bad odor are generated in the secondary combustion chamber 41. By sufficiently decomposing the causal chemical substance, the black smoke and bad odor can be removed from the exhaust gas from the exhaust port 42. As described above, unlike FIGS. 2 to 5, even when only the exhaust cylinder 3 is not provided and the combustion cylinder 4 is not provided, the pair of temperature raising burners 6 and 6 have an appropriate height difference h in the vertical direction. As a result, the effective high-temperature volume of the secondary combustion chamber 41 is increased, and the secondary combustion chamber 41 decomposes chemical substances that cause black smoke and offensive odor. The black smoke and offensive odor can be removed from the exhaust gas.

  2 and 6, a pair of temperature-raising burners 6 and 6 are provided, but the present invention is not limited to two temperature-raising burners 6 and 6, and a plurality of temperature-raising burners 6, 6,... May be provided with a height difference and offset by a separation distance β from the center of the exhaust tube 3. In some cases, one temperature raising burner 6 may be installed.

  The pair of temperature raising burners 6 and 6 are communicated with the fuel tank 7 through a fuel supply pipe 71 as shown in FIG. However, in FIG. 2, the illustration of the fuel supply pipe 71 communicating with the right temperature raising burner 6 is omitted. Further, as shown in FIG. 8, a pair of burner protective covers 61, 61 are attached to the pair of temperature raising burners 6, 6. The pair of burner protection covers 61 and 61 protect the pair of temperature raising burners 6 and 6 and protect the temperature measuring instruments of the pair of temperature raising burners 6 and 6 from the outside.

  Next, the steps provided in the incinerator will be described with reference to FIGS. 3 to 5 and 7. As shown in the figure, the incinerator body 2 has a protrusion inclined obliquely downward to the inside of the incinerator body 2 on the inner surface of the incinerator body 2 at the upper surface position of the rooster 22 provided at the lower part of the incinerator body 2. A step 8 having a shape is provided. The step 8 includes an inclined surface 81 inclined obliquely downward to the inside of the incinerator body 2, a vertical surface 82 downward from the end of the inclined surface 81, and a side wall of the incinerator body 2 from the lower end of the vertical surface 82. And a horizontal plane 83.

  That is, by providing a protruding step 8 inclined obliquely downward to the inside of the incinerator body 2 on the inner surface of the incinerator body 2 at the upper surface position of the rooster 22, the inside of the incinerator body 2 is liquefied while burning. The waste plastic is received at the step 8 to avoid outflow, and the liquefied waste plastic that has flowed down while burning from the inclined step 8 stays in the ash receiving box 84 placed on the bottom surface inside the incinerator body 2. It is designed to burn completely by burning. That is, it is a double combustion system in which combustion is performed in the incinerator body 2 and combustion is performed in the ash receiving box 84. In addition, the liquefied waste plastic may include other combustibles 51 that are incompletely combusted.

  Further, the stepped portion 8 is formed as a horizontal linear protrusion on the inner periphery of the side wall so that the liquefied waste plastic transmitted through the side wall in the incinerator body 2 flows into the ash receiving box 84 inside the incinerator body 2. By placing the ash receiving box 84 on the bottom surface of the incinerator body 2, waste plastic liquefied by the combustion heat due to the step 8 can be prevented from flowing out into and out of the incinerator body 2, and ash The receiving box 84 can easily remove the incineration ash.

  Next, the discharge port sealing door and the outside air adjustment door will be described with reference to FIGS. As shown in the figure, a discharge port sealing door 26 is provided at a combustion ash discharge port 24 provided at the lower part of the incinerator body 2 so as to be freely opened and closed. The discharge airtight door 26 is provided with a combustion air supply adjustment port 261, and the combustion air supply adjustment port 261 is provided with an open air adjustment door 262 that can be opened and closed. The open / close freely is conceivable, such as opening / closing by a hinge, sliding opening / closing, etc., but is not limited to any method.

  Further, at the beginning of combustion, combustion is started in a state in which the discharge port sealing door 26 provided on the front surface of the incinerator body 2 is closed and the outside air adjustment door 262 is closed, and a certain time has elapsed. After the combustion continues and the temperature of the incinerator body 2 rises and stabilizes, it is preferable to open the outside air adjusting door 262 and supply an appropriate amount of outside air from the combustion air supply adjusting port 261. That is, after combustion continues and the temperature of the incinerator body 2 rises and stabilizes, the combustion air supply adjustment port 261 is opened, and the combustion is continued by adding a minimum amount of minute air to the waste plastic. , Complete combustion. In addition, by installing the pair of temperature raising burners 6 and 6 with a height difference h, the volume of the secondary combustion chamber 41 is increased, and black smoke and bad odor are generated even when the combustion air supply control port 261 is fully opened. The combustion time can be shortened by giving more air. According to experiments, when the outside air adjustment door 262 is opened after 30 minutes of combustion time, the total combustion time can be shortened and complete combustion can be achieved.

  Next, the combustion process will be described. The waste plastic as the combustible 51 is opened at the openable / closable outside air blocking door 13 provided at the top of the incinerator 5, and the waste plastic as the combustible 51 is incinerated from the incinerator inlet 23. Into the box. The combustible 51 is burned in the primary combustion chamber 21 in the incinerator body 2, then travels along the protruding step 8 provided on the inner wall of the incinerator body 2, passes through the rooster 22, and the rooster The fuel flows down to the ash receiving box 84 placed underneath 22 and continues to burn. This is intended to achieve complete combustion by further combusting the material to be combusted 51 liquefied and flowing in the primary combustion chamber 21 and flowing downward. Furthermore, there is an effect of preventing the liquefied combustible 51 from flowing out of the incinerator body 2. In a conventional incinerator having no level difference, liquefied waste plastic that has flowed out of the incinerator body 2 can be burned again in the ash receiving box 84 and can be completely burned. Moreover, since the drawer-type ash receiving box 84 placed on the bottom surface of the incinerator body 2 can be easily taken out, the incineration ash can be easily treated. When the waste plastic is burned, the blown air from the primary air blowing pipe located below the blower 46 provided on the left side outside the incinerator body 2 in FIG. Although not supplied into the combustion chamber 2, when burning other general combustibles, the valve is opened and fed into the incinerator body 2.

  Next, the combustion object 51 burned in the primary combustion chamber 21 is heated by the temperature raising burners 6 and 6 provided in the exhaust pipe 3, and the combustion gas burns. It flows to the tube 4. The combustion gas is completely combusted by the air injected from the air injection port 44 provided in the secondary air supply pipe 43 in the secondary combustion chamber 41 of the combustion ash, and the combustion gas is in the upper part of the combustion furnace 5. It flows out to the outside through the exhaust port 42 provided. The combustion gas that has flowed to the outside is a clean gas that does not contain harmful substances such as dioxins, and meets the emission standards for dioxins.

  The above description is illustrative and not restrictive in all respects of the disclosed embodiments. Therefore, the scope of the present invention is not limited to the above description, but is defined by the scope of the claims, and includes meanings equivalent to the scope of the claims and all modifications within the scope. Is intended.

  INDUSTRIAL APPLICABILITY The present invention can be applied to an outside air shut-off charging device that incinerates a lightweight incinerated waste such as expanded polystyrene as a combustible. The combustibles include wastes such as synthetic resin products and materials including hard materials, soft materials, foam materials, and the like, which are called waste plastics, and the like.

FIG. 1 is a cross-sectional view of a side view of an embodiment of the outside air shutoff charging device of the present invention. FIG. 2 is a front view of an incinerator equipped with the outside air shut-off device of the present invention. FIG. 3 is a cross-sectional view of the side view of FIG. 2 for explaining the air flow of the outside air shut-off device. FIG. 4 is a cross-sectional view of the side view of FIG. 2 and is a view for explaining a state in which a combustible material is charged into the outside air blocking charging device. FIG. 5 is a cross-sectional view of the side view of FIG. 2 and is a view for explaining the principle of charging the combusted material into the incinerator. FIG. 6 is a cross-sectional view taken along the line AA of FIG. 2 for illustrating the temperature raising burner of the incinerator. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 2 for explaining the level difference of the incinerator body of the incinerator. FIG. 8 is a partial view for explaining the burner protective cover of the temperature raising burner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outside air shut-off device 11 Shooter 111 Shutter bottom surface 12 Door for entry 121 Door handle 13, 13a Door for outside air shut-off 14 Feed lever 141 Lever support shaft 15 Air pressure device 151 Air blower pipe 152 Air supply pipe 153 Chamber air blower pipe 154 Chamber box 155, 155,... Small hole 16 Incinerator inlet 2 Incinerator body 21 Primary combustion chamber 22 Rooster 23 Furnace side inlet 231 Furnace side thick section 24 Combustion ash outlet 25 Input device side inlet 251 Apparatus side Thickness portion 252 Opening portion 26 Discharge port sealing door 261 Combustion air supply control port 262 Outside air control door 3 Exhaust tube 4 Combustion tube 41 Secondary combustion chamber 42 Exhaust port 43 Secondary air supply pipe 44 Air injection port 45 Secondary air blower Pipe 46 Blower 5 Incinerator 51 Combustion 6 Heating burner 61 Burner protective cover 7 Fuel Tank 71 Fuel supply pipe 8 Step 81 Slant surface 82 Vertical surface 83 Horizontal surface 84 Ash receiving box α Installation angle β Separation distance h Height difference

Claims (1)

An outside air shut-off device that is an input structure for introducing a combustible material that is a lightweight incinerator into the incinerator, a shooter that is a casing constituting the outer shell of the outside air shut-off device , and an outside air shut-off device A charging door provided at the top; an outside air blocking door attached immediately before the incinerator; a charging lever having a rotating structure provided outside the outside air blocking charging device to open and close the outside air blocking door; In the incinerator outside air shut-off charging device , which is composed of a wind pressure device that winds the charged combustion object from behind and supplies air for smoothly charging into the incinerator body,
The wind pressure device includes an input air blower tube connected to a blower installed on the outer side surface of the incinerator body, an air blower tube connected to the input air blower tube and installed on the back side of the outer surface of the shooter. And an air supply pipe connected to the air blowing pipe and supplying air from the upper part inside the shooter,
The outside air shut-off device is provided with a chamber box at the bottom of the bottom surface of the shooter, which is a joint between the shooter and the incinerator body made of a steel plate, and an air flow comprising a plurality of small holes in the chamber box A road is formed,
The wind pressure device has a chamber air blow pipe branched from the input air blow pipe, and the chamber air blow pipe supplies air to a chamber box provided on the lower side of the outer surface of the shooter. By supplying air into the incinerator body from a plurality of small holes provided in the chamber box,
Combustion material that arrives in the vicinity of the incinerator body is appropriately lifted by the air ejected upward from the plurality of small holes of the chamber box, and is made of a refractory cement that is an attachment part to the incinerator body of the outside air shutoff charging device. It was made to fall into the incinerator body without being affected by the frictional resistance of the furnace body side thick part and the apparatus side thick part which are the thick parts of the furnace body side inlet and the charging device side inlet. Features an outside air shut-off device for incinerator.

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