JP4949748B2 - Incinerator - Google Patents

Description

  The present invention includes cut grass, cut grass, pruned tree branches, fallen leaves, food waste, waste paper, cloth waste, synthetic resin waste, polymer waste, sludge, waste liquid (eg, waste oil, waste water), carcass of animals, More specifically, the present invention relates to a rotary incinerator in which a furnace main body rotates in one direction or swings and rotates.

  Known incinerators for incinerating this kind of incinerated materials are disclosed in, for example, Japanese Patent No. 2735911 and Japanese Patent No. 2774849.

  In this incinerator, an incinerator supply port is provided at one end of the furnace body, and further, an incinerator for pushing the incinerator into the furnace body through the incinerator supply port on one end side of the furnace body. A pushing device is installed. On the other end side of the furnace main body, an air diffuser for ejecting combustion air toward an incinerated object in the furnace main body is installed. Further, in the vicinity of the diffuser tube installation position on the other end side of the furnace main body, a combustion gas discharge port for discharging the combustion gas generated by the combustion of the incinerated material in the furnace main body is provided (see Patent Documents 1 and 2) ).

  This incinerator has the following advantages.

  That is, the combustion air ejected from the diffuser tube is reversed in the furnace body and then flows into the combustion exhaust gas outlet as combustion exhaust gas. At this time, the combustion exhaust gas is burned in response to fresh combustion air ejected from the air diffuser and / or a flame ejected from the auxiliary burner. Thereby, the amount of harmful substances (eg, dioxins, smoked gas components) contained in the combustion exhaust gas can be reduced.

In general, when the incineration ash is deposited on the surface of the incineration object so as to cover the surface of the incineration object in the furnace body, the incineration object is less likely to be combusted because the contact area with the combustion air is reduced. Become. On the other hand, according to the incinerator described above, the incineration ash deposited on the surface of the incinerator can be blown off by the jet flow pressure of the combustion air ejected from the air diffuser. There is an advantage that an object can be incinerated efficiently.
Japanese Patent No. 2735911 Japanese Patent No. 2774849

  However, the conventional incinerator has the following difficulties.

  That is, since the hearth of the furnace body is formed in a quadrangular shape in plan view, at the four corners of the hearth of the furnace body, the ejection speed and amount of the combustion air ejected from the air diffuser are insufficient. Sometimes. For this reason, the incineration ash deposited on the surface of the incineration object existing at each corner of the hearth cannot be blown off by the jet flow pressure of combustion air, and as a result, at each corner of the hearth. Unburned material was easy to remain.

  Furthermore, the incineration object in contact with the hearth of the furnace body has a small contact area with the combustion air, so it is difficult to dry and therefore difficult to burn. In particular, when the incinerated product contains a lot of water, the portion with a high water content in the incinerated material accumulates in the lower part of the incinerated material, so it was difficult to burn the portion with the high water content. .

  Furthermore, when incineration objects including heavy objects (eg, sand, stone, glass, metal) are incinerated, the heavy objects are heavy and easily accumulate in the lower part of the incineration object. For this reason, it takes a long time for heavy objects to be discharged out of the furnace, which has been an impediment to the combustion of incinerated materials.

  The present invention has been made in view of the above-described technical background, and an object thereof is to provide an incinerator capable of efficiently incinerating various objects to be incinerated.

  The present invention provides the following means.

[1] A furnace body;
An incinerated object pushing device for pushing the incinerated object into the furnace body in a direction toward the other end of the furnace body through an incinerated object supply port provided at one end of the furnace body;
An air diffuser installed on the other end side of the furnace main body, and for injecting combustion air toward the incineration object in the furnace main body in a direction substantially opposite to the indentation object pushing direction by the incineration object pushing device. ,
An auxiliary burner that is installed in the vicinity of the diffuser tube installation position on the other end side of the furnace body, and injects flames toward the incinerated object in the furnace body in substantially the same direction as the direction of the combustion air ejected from the diffuser pipe When,
A flue gas exhaust port for discharging flue gas generated by the combustion of the incinerated material in the furnace body, provided near the diffuser and auxiliary burner installation position on the other end side of the furnace body,
An incinerator with
The furnace body is formed in a cylindrical shape, is installed sideways, and is supported rotatably about an axis.
An incinerator characterized in that the furnace main body is configured to be capable of rotating in one direction or swinging about its axis by a rotation drive device capable of controlling the rotation speed of the furnace main body.

  [2] The incinerator according to item 1 above, wherein the inner diameter of the furnace body gradually increases in a direction from one end portion to the other end portion of the furnace body.

[3] The diffuser pipe is detachably installed on the rear side wall portion disposed on the other end side of the furnace main body from the outer surface side of the rear side wall portion,
The incinerator according to 1 or 2 above, wherein an auxiliary burner is attached to the air diffuser.

  [4] The incinerator according to item 3 above, wherein the auxiliary burner is disposed in the air diffuser.

  [5] The incinerator according to any one of the preceding items 1 to 4, further comprising a preheating device that preheats combustion air with heat of combustion exhaust gas.

  The present invention has the following effects.

  In the invention of [1], the combustion air ejected from the diffuser tube is reversed in the furnace body, and then flows into the combustion exhaust gas outlet as combustion exhaust gas. At this time, the combustion exhaust gas is burned in response to fresh combustion air ejected from the air diffuser and / or a flame ejected from the auxiliary burner. Thereby, the amount of harmful substances (eg, dioxins, smoked gas components) contained in the combustion exhaust gas can be greatly reduced.

  Furthermore, since the ejection direction of the flame ejected from the auxiliary burner is substantially the same direction as the ejection direction of the combustion air ejected from the diffuser, the flame proceeds along the flow of the combustion air. Accordingly, the flame is ejected toward the incineration object without being disturbed by the jet flow pressure of the combustion air, and the combustion air is ejected toward the incineration object without being disturbed by the jet flow pressure of the flame. Thereby, the incinerated object is burned efficiently.

  Furthermore, the furnace main body is formed in a cylindrical shape and is disposed sideways. Therefore, there are no corners inside the furnace body. Therefore, the incineration ash deposited on the surface of the incinerated object in the furnace body can be reliably blown over the entire surface of the incinerated object by the jet flow pressure of the combustion air ejected from the air diffuser. As a result, the entire surface of the incinerated material comes into contact with the combustion air, so that unburned material does not remain in the furnace body, and the incinerated material can be incinerated efficiently.

  Further, the incinerator is configured so that the furnace main body can rotate in one direction or swing around the axis by a rotation drive device. Therefore, the ceiling part of the furnace body heated by the heat of the combustion exhaust gas generated from the incinerated object in the furnace body moves to the lower side of the incinerated object as the furnace body rotates and becomes a floor part. The incinerated product is quickly dried and burned by the heat of the floor. Therefore, even if the incineration object contains a lot of water, for example, it can be incinerated efficiently.

  In particular, when the furnace main body is configured so as to be able to swing and rotate, the incinerated object in the furnace main body is reliably brought closer to the central position in the diameter direction of the furnace main body by swinging and rotating the furnace main body during incineration. Can be collected. Since this position in the furnace body is a position where the incinerated object can be burned most efficiently in the furnace body, the incinerated object can be incinerated more efficiently.

  Furthermore, since the rotation drive device can control the rotation speed of the furnace body, the rotation speed of the furnace body can be adjusted according to the type of the incinerated object, so that various incinerated objects can be incinerated reliably and efficiently. it can.

  Furthermore, the incinerator includes an incinerator pushing device that pushes the incinerated material into the furnace body in a direction toward the other end of the furnace body. Therefore, the incinerator containing a lot of moisture or the incinerator containing a heavy object can be reliably pushed toward the other end of the furnace body as the incinerator. Thereby, the incinerated substance containing much water can be burned efficiently, and heavy objects can be discharged reliably.

  In the invention of [2], the inner diameter of the furnace main body gradually increases in the direction from one end of the furnace main body to the other end. Therefore, the incinerator in the furnace body slides on the floor of the furnace body toward the other end of the furnace body by the action of gravity. Thereby, a heavy article can be discharged | emitted more reliably.

  In the invention of [3], the diffuser pipe is installed on the rear side wall portion disposed on the other end side of the furnace main body so as to be removable from the outer surface side of the rear side wall portion. In doing so, the diffuser can be easily removed from its location.

  Further, since the auxiliary burner is attached to the diffuser tube, the auxiliary burner can be removed together with the diffuser tube by removing the diffuser tube. Therefore, the auxiliary burner can be easily removed from the installation location when the auxiliary burner is maintained or replaced.

  In the invention of [4], since the auxiliary burner is disposed in the diffuser pipe, the auxiliary burner can be cooled by the combustion air flowing in the diffuser pipe. Therefore, thermal damage of the auxiliary burner can be prevented.

  In the invention of [5], the incinerator includes a preheating device that preheats the combustion air with the heat of the combustion exhaust gas. Therefore, the furnace main body that may be generated when the combustion air is ejected into the furnace main body. Can suppress the temperature drop inside. Thus, fuel consumption can be reduced.

  Next, an embodiment of the present invention will be described below with reference to the drawings.

  The incinerator (100) of the present embodiment includes cut grass, cut grass, pruned tree branches, fallen leaves, food waste, waste paper, cloth waste, synthetic resin waste, polymer waste, sludge, waste liquid (eg, waste oil, Waste to be incinerated (70), such as carcasses, animal carcasses, and household waste.

  The incinerator (100) includes a primary combustion furnace (1), a rotary drive device (15), an incinerator pushing device (10), an air diffuser (20), an auxiliary burner (25), and a primary combustion. A common discharge port (8) as a discharge port for the engine and a secondary combustion furnace (30) are provided.

  The primary combustion furnace (1) includes a furnace main body (primary combustion furnace main body) (2) as a body portion of the primary combustion furnace (1), and an incinerated object (70) is placed inside the furnace main body (2). Combustion (primary combustion) and incineration. The furnace body (2) has a cylindrical shape, and more specifically, a circular truncated cone shape. Therefore, the inner diameter of the furnace body (2) gradually increases in the direction from one end (front end) to the other end (rear end) of the furnace body (2).

  The furnace body (2) is disposed sideways and is supported so as to be rotatable about its axis. In the present embodiment, the furnace body (2) is arranged so that the axis of the furnace body (2) is horizontal. (4) is a front side wall portion of the primary combustion furnace (1) disposed on one end side of the furnace body (2). One end of the furnace body (2) is rotatably supported by the front side wall (4). (6) is a rear support part that rotatably supports the other end of the furnace body (2). Further, a rear side wall portion (5) of the primary combustion furnace (1) (that is, the incinerator (100)) is disposed on the other end side of the furnace body (2), that is, other than the primary combustion furnace (1). The rear side wall part (5) is arrange | positioned at the edge part. (17) is a plurality of (two in the figure) rotatable support rollers for supporting the furnace body (2).

  An incinerator supply port (3) having a circular cross section is provided at one end of the furnace body (2). More specifically, the incinerator supply port (3) is provided so as to penetrate the front side wall (4) of the primary combustion furnace (1) in the thickness direction.

  The rotation drive device (15) rotates the furnace main body (2) of the primary combustion furnace (1) around its axis in one direction, or swings and rotates (that is, forward / reverse rotation). The rotational drive device (15) has, for example, a pinion gear (illustrated) that can be rotationally driven. The pinion gear is driven to rotate in one direction while meshing with an annular rack (not shown) fixed to the outer peripheral surface of the furnace body (2), or in one direction and the other direction (ie, positive direction). The furnace main body (2) is configured to rotate in one direction or to swing and rotate by being alternately rotated in a predetermined direction at a predetermined time. Furthermore, this rotational drive device (15) is capable of controlling the rotational speed of the furnace body (2) and has a rotational speed control device (16) for controlling the rotational speed of the furnace body (2). .

  The incinerator push-in device (10) is configured to place the incinerator (70) into the furnace body (2) through the incinerator supply port (3) of the furnace body (2) (primary combustion furnace (1)). (2) It pushes in the direction which goes to the other end part. This pushing-in apparatus (10) is installed in the one end side of the furnace main body (2), ie, the incineration object supply port (3) side. The pushing device (10) includes a hopper (13) and a rod-like pushing member (11) that pushes the incinerated object (70) charged into the hopper (13) into the furnace body (2). . The cross-sectional shape of the push member (11) is the same as the cross-sectional shape of the incineration object supply port (3), and the cross-sectional area of the push member (11) is the same as the cross-sectional area of the incineration object supply port (3). It is the same size. Therefore, the pushing member (11) projects and moves into the furnace body (2) through the incineration object supply port (3) in order to push the incineration object (70) into the furnace body (2). The incinerator supply port (3) is closed by the push member (11). Incidentally, (12) is a drive source for moving the push member (11). The drive source (12) is composed of a hydraulic cylinder or the like.

  In the present embodiment, the incineration object pushing device (10) is a pusher type having a pushing member (11). However, in the present invention, for example, a screw type may be used, Other structures may be used.

  In the present invention, the incineration object supply port (3) can be opened and closed between the hopper (13) of the incineration object pushing device (10) and the front side wall (4) of the primary combustion furnace (1). A simple gate (not shown) may be provided.

  The diffuser pipe (20) pushes the primary combustion air (A1) toward the incineration object (70) in the furnace body (2), and the incineration object (70) is pushed in by the incineration object pushing device (10). Is ejected in a direction opposite to.

  This air diffuser pipe (20) is installed on the other end side of the furnace body (2). More specifically, the rear side wall part (5) is provided below the rear side wall part (5) of the primary combustion furnace (1). ) Is detachable from the outer surface side. That is, a fitting hole (5a) for fitting the diffuser pipe (20) is provided in the lower part of the rear side wall part (5) so as to penetrate the rear side wall part (5) in the thickness direction. The diffuser tube (20) is detachably fitted into the fitting hole (5a) from the outer surface side of the rear side wall portion (5) so that the diffuser tube (20) is fitted into the rear side wall portion (5). is set up. On the other hand, the air diffuser (20) can be removed from the installation location by taking out the air diffuser (20) from the fitting hole (5a).

  On the surface facing the incinerated object (70) on the peripheral surface of the air diffuser pipe (20), that is, the surface facing the inside of the primary combustion furnace (1), a plurality of (more specifically, many) primary combustions are performed. The air outlets (21) are provided in a distributed manner. As shown in FIG. 2, the primary combustion air (A1) is scattered in a direction opposite to the pushing-in direction of the incinerated object (70) from the ejection ports (21) toward the incinerated object (70). It is ejected in a fan shape in plan view around the trachea (20). The spread angle in the horizontal plane of the primary combustion air (A1) ejected from these ejection ports (21) is set within a range of, for example, 20 to 100 ° (preferably 40 to 80 °). However, in the present invention, the spread angle of the primary combustion air (A1) in the horizontal plane is not limited to the above range.

  The auxiliary burner (25) is used to assist the incinerated object (70) by ejecting a flame (C1) toward the incinerated object (70) in the furnace body (2). The ejection direction of the flame (C1) of the auxiliary burner (25) is a direction opposite to the pushing direction of the incinerated object (70) by the incinerated object pushing device (10), that is, ejected from the air diffuser (20). It is the same direction as the ejection direction of the primary combustion air (A1). The auxiliary burner (25) has ignition means (not shown) for igniting the auxiliary fuel.

  The auxiliary burner (25) is installed in the vicinity of the position where the diffuser pipe (20) is installed on the other end side of the furnace body (2). Specifically, the auxiliary burner (25) is attached to the diffuser pipe (20). More specifically, the auxiliary burner (25) is connected to the diffuser pipe (20) inside the diffuser pipe (20). They are integrated and arranged. Then, the auxiliary burner (25) is removed from the installation position together with the diffusion tube (20) by removing the diffusion tube (20) from the installation position as described above.

  The common discharge port (8) is formed by the combustion of the primary combustion exhaust gas (B1) generated by the combustion of the incinerated object (70) in the furnace body (2) and the incinerated object (70) in the furnace body (2). The generated incinerated ash (71) is discharged together from the furnace body (2) (that is, the primary combustion furnace (1)) to the secondary combustion furnace (30). That is, this common discharge port (8) functions as a primary combustion exhaust gas discharge port and also functions as an incineration ash discharge port.

  The common discharge port (8) is locally provided in the vicinity of the installation position of the diffuser pipe (20) and auxiliary burner (25) on the other end side (rear end side) of the furnace body (2). More specifically, the common discharge port (8) is located immediately below the position where the diffuser pipe (20) and auxiliary burner (25) are installed in the horizontal rear end hearth (7) of the primary combustion furnace (1). A local opening is provided. The upper surface of this rear end hearth part (7) is formed in the downward slope in the direction which goes to a shared discharge port (8). As a result, the incineration ash (71) that has moved onto the upper surface of the rear end hearth (7) is guided downward toward the common discharge port (8) and then dropped downward from the common discharge port (8). The

  Further, the incinerator (100) includes a common discharge passage (9) that extends straight downward from the common discharge port (8) and through which both the primary combustion exhaust gas (B1) and the incineration ash (71) pass. . That is, the common discharge passage (9) functions as a primary combustion exhaust gas discharge passage through which the primary combustion exhaust gas (B1) discharged from the common discharge port (8) passes, and is further discharged from the common discharge port (8). It also functions as an incineration ash discharge passage through which the incineration ash (71) passes.

  The secondary combustion furnace (30) is installed below the furnace body (2) of the primary combustion furnace (1) so as to communicate with the common discharge passage (9). More specifically, the common discharge passage (9) extends from the common discharge port (8) to the ceiling of the secondary combustion furnace (30) in communication with the secondary combustion furnace (30).

  The secondary combustion furnace (30) performs secondary combustion of the primary combustion exhaust gas (B1) discharged into the secondary combustion furnace (30) downward from the common discharge port (8) through the common discharge passage (9). In addition, the incinerated ash (71) discharged from the common discharge port (8) through the common discharge passage (9) is heated to a molten state. That is, the secondary combustion furnace (30) is configured so that its internal temperature becomes, for example, 1300 ° C. or higher, and thereby functions as a secondary combustion furnace and melting furnace. In addition, in FIG. 1, (32) is an accommodating part which accommodates the molten material (72) which the incinerated ash (71) or the incinerated ash (71) fuse | melted. This accommodating part (32) is installed under the secondary combustion furnace (30).

  The secondary combustion furnace (30) includes a secondary combustion air diffuser (40) and a secondary combustion burner (45).

  The secondary combustion air diffuser pipe (40) is directed toward the primary combustion exhaust gas (B1) and the incineration ash (71) discharged downward from the top into the secondary combustion furnace (30) through the common discharge passage (9). The secondary combustion air (A2) is ejected in the horizontal direction.

  The secondary combustion air diffusion pipe (40) is detachably installed on the side wall (31) of the secondary combustion furnace (30) from the outer surface side of the side wall (31). That is, in the side wall portion (31) of the secondary combustion furnace (30), the fitting hole (31a) into which the secondary combustion diffuser pipe (40) is fitted penetrates the side wall portion (31) in the thickness direction. Is provided. Then, the secondary combustion diffuser pipe (40) is detachably fitted into the fitting hole (31a) from the outer surface side of the side wall portion (31) so that the secondary combustion diffuser pipe (40) is attached. Is installed on the side wall (31). On the other hand, the secondary combustion diffuser pipe (40) can be removed from the installation location by taking out the secondary combustion diffuser pipe (40) from the fitting hole (31a).

  On the peripheral surface of the secondary combustion air diffuser pipe (40), the surface facing the inside of the secondary combustion furnace (30) has a plurality (more in detail, many) secondary combustion air jets (41). Are distributed. The secondary combustion air (A2) is ejected from these ejection ports (41) in a fan shape in plan view with the secondary combustion air diffuser pipe (40) as the center. The divergence angle in the horizontal plane of the secondary combustion air (A2) ejected from these ejection ports (41) is set within a range of 20 to 100 ° (preferably 40 to 80 °), for example. However, in the present invention, the spread angle of the secondary combustion air (A2) in the horizontal plane is not limited to being in the above range.

  The secondary combustion burner (45) is directed toward the primary combustion exhaust gas (B1) and the incineration ash (71) discharged from the top to the bottom in the secondary combustion furnace (30) through the common discharge passage (9). A flame (C2) is ejected in the horizontal direction. The ejection direction of the flame (C2) of the secondary combustion burner (45) is the same as the ejection direction of the secondary combustion air (A2) ejected from the secondary combustion air diffuser pipe (40). The secondary combustion burner (45) has ignition means (not shown) for igniting the fuel.

  The secondary combustion burner (45) is attached to the secondary combustion diffuser pipe (40). More specifically, the secondary combustion burner (45) is disposed inside the secondary combustion diffuser pipe (40). The secondary combustion air diffuser pipe (40) is integrated with the secondary combustion air diffuser pipe (40). The secondary combustion burner (45) is removed from the installation position together with the secondary combustion air diffusion pipe (40) by removing the secondary combustion air diffusion pipe (40) from the installation position as described above. It has been.

  (34) is a secondary combustion exhaust gas discharge passage through which the secondary combustion exhaust gas (B2) discharged from the secondary combustion furnace (30) passes. A baffle plate (33) for the flow of the secondary combustion exhaust gas (B2) is arranged at a boundary position between the discharge passage (34) and the inside of the secondary combustion furnace (30).

  Further, the incinerator (100) includes a dust collector (50), a collected dust supply device (55), a preheating device (51), a combustion air supply device (52), and a cooling tower (53). And.

  The dust collector (50) collects soot such as fly ash contained in the second combustion exhaust gas (B2) discharged from the secondary combustion furnace (30). This dust collector (50) is of a cyclone type, and has a plurality of cyclones in this embodiment. Moreover, this dust collector (50) is formed, for example with the refractory material. (50a) is an introduction pipe for introducing the secondary combustion exhaust gas (B2) discharged from the secondary combustion furnace (30) into the dust collector (50).

  The collection dust supply device (55) supplies collected dust collected by the dust collection device (50) into the secondary combustion furnace (30). This collection dust supply device (55) is a variety of pipe conveyors, belt conveyors and the like for conveying the dust collected by the dust collection device (50) from the dust collection device (50) to the secondary combustion furnace (30). It has a conveying device (56) consisting of a conveyor. And this collection dust supply apparatus (55) supplies the dust which was conveyed by the conveyance apparatus (56) from the dust collection apparatus (50) to the secondary combustion furnace (30) in a secondary combustion furnace (30). It is configured as follows.

  The combustion air supply device (52) supplies fresh external air to the preheating device (51) as combustion air such as primary combustion air (A1) and secondary combustion air (A2), For example, it is constituted by a blower. (52a) is an introduction pipe for introducing fresh external air from the combustion air supply device (52) to the preheating device (51).

  The preheating device (51) uses the combustion air such as the primary combustion air (A1) and the secondary combustion air (A2) supplied to the preheating device (51) by the combustion air supply device (52) as the secondary combustion air. The secondary combustion exhaust gas (B2) discharged from the combustion furnace (30) is preheated with heat. In the present embodiment, the preheating device (51) is the heat of the secondary combustion exhaust gas (B2), which has passed through the dust collector (50) and collected dust and removed by the dust collector (50). Combustion air such as air (A1) and secondary combustion air (A2) is preheated. (51a) is an introduction pipe for introducing the secondary combustion exhaust gas (B2) that has passed through the dust collector (50) into the preheating apparatus (51), and (51b) is a second pipe that flows in the introduction pipe (51a). It is a temperature / pressure sensor for detecting the temperature and pressure of the secondary combustion exhaust gas (B2).

  Combustion air preheated by the preheating device (51) passes through the combustion air supply pipe (51c), and the diffuser pipe (20), the secondary combustion diffuser pipe (40), and secondary combustion air described later. To the replenishing device (65). (51d) is a temperature / pressure sensor for detecting the temperature and pressure of the combustion air flowing in the supply pipe (51c).

  The cooling tower (53) cools the secondary combustion exhaust gas (B2) that has passed through the preheating device (51). In the present embodiment, the cooling tower (53) is, for example, a water-cooled type. (53a) is an introduction pipe for introducing the secondary combustion exhaust gas (B2) that has passed through the preheating device (51) into the cooling tower (53).

  In FIG. 1, reference numeral (60) denotes a fuel tank that stores fuel for the auxiliary combustion burner (25) and fuel for the secondary combustion burner (45). (61) is a fuel conveyance pipe for conveying the fuel in the fuel tank (60) to the auxiliary combustion burner (25) and the secondary combustion burner (45), respectively. Each fuel transfer pipe (61) is provided with a fuel transfer pump (61a).

  (65) is an air supply device for secondary combustion. This replenishing device (65) uses the secondary combustion air as the secondary combustion furnace (30) (or shared) based on the oxygen concentration in the secondary combustion exhaust gas (B2) discharged from the secondary combustion furnace (30). The discharge passage (9)) is replenished. The replenishing device (65) includes an oxygen concentration detection sensor (65a), a nozzle (65c) for supplying and supplying secondary combustion air into the secondary combustion furnace (30), and the nozzle (65c). And an electric valve (65b) for adjusting the amount of secondary combustion air jetted. The replenishing device (65) detects the oxygen concentration in the secondary combustion exhaust gas (B2) passing through the secondary combustion exhaust gas discharge passage (34) by the oxygen concentration detection sensor (65a). The electric valve (65b) opens and closes based on the oxygen concentration detected by (65a), and thereby the amount of secondary combustion air ejected from the nozzle (65c) is automatically adjusted. ing.

  (66a) is a temperature / pressure sensor for detecting the temperature and pressure of the primary combustion air (A1) supplied to the diffuser pipe (20), and (66b) is an ejection of the primary combustion air (A1). It is a valve that adjusts the amount.

  (67a) is a temperature / pressure sensor for detecting the temperature and pressure of the secondary combustion air (A2) supplied to the secondary combustion air diffuser pipe (40), and (67b) is the secondary combustion air. This is a valve for adjusting the ejection amount of (A2).

  (68) is a temperature / pressure sensor for detecting the temperature and pressure in the furnace body (2) of the primary combustion furnace (1).

  Next, operation | movement of the incinerator (100) of this embodiment is demonstrated below.

First, by operating the rotation drive device (15), the furnace body (2) of the primary combustion furnace (1) is rotated in one direction or swinging about a shaft at a predetermined rotational speed. The rotational speed of the furnace body (2) is set variously according to the type of the incinerated object (70). A desirable range of the rotational speed of the furnace body (2) is as follows. That is, when the furnace body (2) is rotated in one direction, it is desirable that the rotation speed of the furnace body (2) is set in a range of, for example, 12 to 120 h- ¹ . On the other hand, when the furnace body (2) is oscillated and rotated, the rotation speed of the furnace body (2) (more specifically, the oscillating rotation angular speed) is, for example, −180 ° to + 180 ° (that is, −πrad to + πrad). It is desirable to set it within the range of 4320 to 43200 ° / h within the range of the rocking rotation angle. However, in the present invention, the rotational speed of the furnace body (2) is not limited to being within the above range. The rotation speed of the furnace body (2) can be controlled by the rotation speed control device (16) of the rotation drive device (15).

  Next, the incinerated object (70) is put into the hopper (13). Then, by actuating the drive source (12) of the incinerator pushing device (10), the pushing member (11) of the pushing device (10) is directed toward the furnace body (2) of the primary combustion furnace (1). To move forward. As a result, the incinerated object (70) passes through the incinerated object supply port (3) into the furnace body (2) at a predetermined speed in the direction toward the other end (that is, the rear end) of the furnace body (2). It is pushed in. In addition, the indentation speed | rate of the to-be-incinerated object (70) is set variously according to the kind of to-be-incinerated object (70), for example, is set to the range of 0.1-2 m / h. However, in the present invention, the pushing speed of the incinerated object (70) is not limited to being within the above range.

  In this way, while pushing the incinerated object (70) into the furnace body (2), the primary combustion air (A1) is directed from the aeration tube (20) toward the incinerated object (70) in the furnace body (2). It ejects in the direction which opposes the pushing direction of the incinerated object (70) by the incinerated object pushing-in apparatus (10). Further, the auxiliary combustion fuel of the auxiliary combustion burner (25) is ignited, and then the flame (C1) is directed from the auxiliary combustion burner (25) toward the incinerated object (70) in the furnace body (2). 10) It injects in the same direction as the injection direction of the primary combustion air (A1) injected from the diffuser pipe (20), in the direction opposite to the pushing direction of the incinerated object (70).

  Then, the incinerated object (70) is combusted by receiving the flame (C1) and the primary combustion air (A1), thereby supporting the incinerated object (70). When the incinerated object (70) reaches a temperature at which it can combust (for example, about 800 °), the flame (C1) ejected from the auxiliary combustion burner (25) is extinguished. Thereafter, the incinerated object (70) is combusted (self-combusted) while the primary combustion air (A1) is ejected from the aeration tube (20). The primary combustion exhaust gas (B1) generated by the combustion of the incinerated object (70) rises in the furnace body (2). Thereby, the ceiling part (2a) of the furnace body (2) is heated by the heat of the primary combustion exhaust gas (B1).

  In addition, before or during the burning of the incinerated object (70) in the furnace body (2) of the primary combustion furnace (1), the secondary combustion air diffuser (40) of the secondary combustion furnace (30). From which the secondary combustion air (A2) is ejected. Further, the flame (C2) is ejected from the secondary combustion burner (45) in the same direction as the ejection direction of the secondary combustion air (A2) ejected from the secondary combustion air diffuser pipe (40).

  In the furnace main body (2) of the primary combustion furnace (1), the primary combustion air (A1) ejected from the diffuser pipe (20) is blown toward the incinerated object (70) to be incinerated object (70). ). As a result, the primary combustion air (A1) becomes the primary combustion exhaust gas (B1) generated by the combustion of the incinerated object (70). Furthermore, the incineration ash deposited on the surface of the incineration object (70) is blown off over the entire surface of the incineration object (70) by the jet flow pressure of the primary combustion air (A1). Thereafter, the primary combustion exhaust gas (B1) tends to flow toward the incinerator supply port (3) together with the blown incineration ash, and the incinerator supply port (3) is pushed into the incinerator. Since it is blocked by the pushing member (11) of (10), there is no place to go. As a result, the direction of the primary combustion exhaust gas (B1) is changed (that is, reversed) in the direction opposite to the ejection direction. The primary combustion exhaust gas (B1) flows along the ceiling (2a) of the furnace body (2) and then flows downward along the rear side wall (5). Finally, the primary combustion exhaust gas (B1) flows into the common discharge port (primary combustion exhaust gas discharge port) (8).

  Here, this common discharge port (8) is provided in the vicinity of the diffuser pipe (20) and auxiliary burner (25) installation position on the other end side of the furnace body (2) as described above. The diffuser pipe (20) and the auxiliary burner (25) are provided immediately below the installation position. Accordingly, the primary combustion exhaust gas (B1) flowing toward the common exhaust port (8) is freshly injected from the air diffuser (20) immediately before almost all of the primary exhaust gas (B1) flows into the common exhaust port (8). Combustion air (A1) is received at the nearest position, or flame (C1) ejected from the auxiliary burner (25) is received at the nearest position and burned. This reduces the amount of harmful substances (eg, dioxins, smoked gas components) contained in the primary combustion exhaust gas (B1).

  Further, the incineration ash (71) generated by the combustion of the incinerated object (70) in the furnace body (2) is discharged together with the incineration object (70) pushing operation by the incinerated object pushing device (10). It gradually moves toward the outlet (8) and finally falls into the common discharge port (8) (that is, enters into the common discharge port (8)).

  Thus, both the primary combustion exhaust gas (B1) and the incineration ash (71) in the furnace body (2) are lowered from the common exhaust port (8) into the secondary combustion furnace (30) through the common exhaust passage (9). Discharged in the direction. The primary combustion exhaust gas (B1) and the incineration ash (71) are both in the secondary combustion furnace (30) and the secondary combustion air (A2) ejected from the secondary combustion air diffuser pipe (40). The flame (C2) ejected from the next combustion burner (45) is simultaneously received and burned again (secondary combustion). This further reduces the amount of harmful substances remaining in the primary combustion exhaust gas (B1). The primary combustion exhaust gas (B1) in which the amount of harmful substances is reduced in this way passes through the gap between the baffle plates (33) as the secondary combustion exhaust gas (B2) and is then introduced into the dust collector (50). On the other hand, the incineration ash (71) is completely removed (substantially completely) by burning unburned matter contained in the incineration ash (71) and melted in the secondary combustion furnace (30). The molten material (72) is accommodated in the accommodating portion (32).

  The secondary combustion exhaust gas (B2) introduced into the dust collector (50) has collected dust such as fly ash contained in the secondary combustion exhaust gas (B2) by the dust collector (50). Soot is removed from the secondary combustion exhaust gas (B2).

  Next, the secondary combustion exhaust gas (B2) is introduced from the dust collector (50) into the preheating device (51). Then, the combustion air supplied from the combustion air supply device (52) to the preheating device (51) is preheated by the heat of the secondary combustion exhaust gas (B2) by the preheating device (51). The heated combustion air is supplied as the primary combustion air (A1) and the secondary combustion air (A2) to the diffuser pipe (20) and the secondary combustion air diffuser pipe (40), respectively, and as necessary. To the secondary combustion air supply device (65).

  Next, the secondary combustion exhaust gas (B2) is introduced from the preheating device (51) into the cooling tower (53). Then, the secondary combustion exhaust gas (B2) is cooled by the cooling tower (53), and then discharged to the outside through the bag filter, the induction exhaust fan, and the chimney sequentially.

  On the other hand, soot dust such as fly ash collected by the dust collector (50) contains harmful substances such as dioxins generated in the process of cooling the dust inside the dust collector (50). . In order to remove this harmful substance, the dust collected by the dust collector (50) is transferred from the dust collector (50) to the secondary combustion furnace (30) by the transport device (56) of the collected dust supply device (55). ). The transported dust is supplied into the secondary combustion furnace (30) by the collected dust supply device (55). As a result, the soot is combusted in the secondary combustion furnace (30). As a result, the amount of harmful substances (dioxins, etc.) contained in the soot is greatly reduced, and the soot is melted and melted. The object (72) is accommodated in the accommodating part (32).

  Thus, the incinerator (100) has the following advantages.

  In the incinerator (100), the primary combustion air (A1) ejected from the diffuser pipe (20) is reversed in the furnace body (2) of the primary combustion furnace (1), and then the primary combustion exhaust gas (B1). Into the common discharge port (primary combustion exhaust gas discharge port) (8). At this time, immediately before the primary combustion exhaust gas (B1) flows into the common discharge port (8), fresh primary combustion air (A1) ejected from the air diffuser pipe (20) or further the auxiliary burner (25). It is burned in response to the flame (C1) spouted from. Thereby, the quantity of harmful substances, such as dioxins contained in this primary combustion exhaust gas (B1), can be reduced significantly.

  Furthermore, since the ejection direction of the flame (C1) ejected from the auxiliary burner (25) is the same direction as the ejection direction of the primary combustion air (A1) ejected from the diffuser pipe (20), the flame (C1) is It progresses along the flow of the primary combustion air (A1). Accordingly, the flame (C1) is ejected toward the incinerated object (70) without being disturbed by the ejection flow pressure of the primary combustion air (A1), and the primary combustion air (A1) is flame (C1). It is ejected toward the incineration object (70) without being disturbed by the ejection flow pressure. Thereby, the incinerated object (70) is burned efficiently.

  Furthermore, the furnace body (2) is formed in a cylindrical shape and is disposed sideways. Therefore, there are no corners inside the furnace body (2). Therefore, the incinerated ash deposited on the surface of the incinerated object (70) in the furnace body (2) is incinerated by the flow pressure of the primary combustion air (A1) ejected from the air diffuser (20). (70) can be reliably blown over the entire surface. As a result, the entire surface of the incinerated object (70) comes into contact with the primary combustion air (A1), so that no unburned object remains in the furnace body (2), and therefore the incinerated object (70). Can be incinerated efficiently.

  Further, the incinerator (100) is configured such that the furnace body (2) can rotate in one direction or swing around the axis by a rotation drive device (15). Therefore, the ceiling (2a) of the furnace body (2) heated by the heat of the primary combustion exhaust gas (B1) generated from the incinerated object (70) in the furnace body (2) is rotated by the furnace body (2). Accordingly, it moves to the lower side of the incinerated object (70) and becomes the floor part (2b), so that the incinerated object (70) is quickly dried and burned by the heat of the floor part (2b). Therefore, even if the incinerated object (70) contains a lot of water, for example, it can be incinerated efficiently.

  In particular, when the furnace body (2) is configured to be able to swing and rotate, the incinerated object (70) in the furnace body (2) can be removed by swinging and rotating the furnace body (2) during incineration. The furnace body (2) can be reliably gathered to the central position in the diameter direction. Since this position in the furnace body (2) is the position where the incineration object (70) can be burned most efficiently in the furnace body (2), the incineration object (70) can be incinerated more efficiently.

  Furthermore, since the rotation drive device (15) can control the rotation speed of the furnace body (2), the rotation speed of the furnace body (2) can be adjusted according to the type of the incinerated object (70), Therefore, various incineration objects (70) can be surely and efficiently incinerated.

  Furthermore, the incinerator (100) includes an incinerator pushing device (10) for pushing the incinerated material (70) into the furnace body (2) in a direction toward the other end of the furnace body (2). . Therefore, as the incinerated object (70), the incinerated object containing a large amount of moisture or the incinerated object containing a heavy object can be reliably pushed toward the other end of the furnace body (2). . Thereby, the incinerated substance containing a lot of moisture can be burned efficiently, and heavy objects can be reliably discharged to the common discharge port (8).

  In addition, the inner diameter of the furnace body (2) gradually increases in the direction from one end of the furnace body (2) to the other end. Therefore, the incinerated object (70) in the furnace body (2) slides and moves on the floor (2b) of the furnace body (2) toward the other end of the furnace body (2) by the action of gravity. . Thereby, a heavy article can be discharged | emitted more reliably to a common discharge port (8).

  Further, the diffuser pipe (20) is detachably installed on the rear side wall (5) disposed on the other end side of the furnace body (2) so as to be removable from the outer surface side of the rear side wall (5). When performing maintenance or replacement of the trachea (20), the air diffuser (20) can be easily removed from the installation location.

  Further, since the auxiliary burner (25) is attached to the diffuser tube (20), the auxiliary burner (25) can be removed together with the diffuser tube (20) by removing the diffuser tube (20). it can. Therefore, the auxiliary burner (25) can be easily removed from the installation location when the auxiliary burner (25) is maintained or replaced.

  Further, since the auxiliary burner (25) is disposed in the diffuser pipe (20), the auxiliary burner (25) can be cooled by the primary combustion air (A1) flowing in the diffuser pipe (20). Therefore, the thermal damage of the auxiliary burner (25) can be prevented.

  The incinerator (100) includes a preheating device (51) that preheats the primary combustion air (A1) with the heat of the secondary combustion exhaust gas (B2), so that the primary combustion is performed in the furnace body (2). The fall of the temperature in the furnace main body (2) which may arise when the working air (A1) is ejected can be suppressed. As a result, the interior of the furnace body (2) can be maintained at a high temperature, and fuel consumption can be reduced.

  Furthermore, the common exhaust port (primary combustion exhaust gas exhaust port) (8) that discharges both the primary combustion exhaust gas (B1) and the incineration ash (71) generated by the combustion of the incinerated object (70) in the primary combustion furnace (1) (8) ) Is not provided on the rear side wall (5) of the primary combustion furnace (1), but is directly below the position where the diffuser pipe (20) and auxiliary burner (25) are installed at the other end of the primary combustion furnace (1). Is provided. Therefore, the primary combustion exhaust gas (B1) in the primary combustion furnace (1) is fresh primary combustion air ejected from the diffuser pipe (20) immediately before almost all of it flows into the common exhaust port (8). (A1) or the flame (C1) ejected from the auxiliary burner (25) is surely received. Thereby, the quantity of the harmful | toxic substance contained in primary combustion exhaust gas (B1) can be reduced reliably.

  Further, the common discharge port (8) discharges both the primary combustion exhaust gas (B1) and the incineration ash (71). Therefore, the incineration ash (71) is discharged from the primary combustion exhaust gas (B1) while the incineration ash (71) is discharged into the secondary combustion furnace (30) from the common discharge port (8) through the common discharge passage (9). It is heated with heat and maintained at a high temperature. That is, it is possible to prevent the temperature of the incineration ash (71) from being lowered during the discharge of the incineration ash (71) into the secondary combustion furnace (30), thereby remaining in the incineration ash (71). Unburnt materials can be reliably burned in the secondary combustion furnace (30).

  Furthermore, the amount of harmful substances remaining in the primary combustion exhaust gas (B1) can be greatly reduced by subjecting the primary combustion exhaust gas (B1) to secondary combustion in the secondary combustion furnace (30).

  Further, the secondary combustion furnace (30) further heats the incinerated ash (71) discharged through the common discharge passage (9) to a molten state. It can be melted by (30).

  Further, since the secondary combustion furnace (30) includes the secondary combustion air diffuser pipe (40) and the secondary combustion burner (45), the amount of harmful substances remaining in the primary combustion exhaust gas (B1). Can be significantly reduced.

  Further, the ejection direction of the flame (C2) ejected from the secondary combustion burner (45) is the same direction as the ejection direction of the secondary combustion air (A2) ejected from the secondary combustion air diffuser pipe (40). Thus, the flame (C2) proceeds along the flow of the secondary combustion air (A2). Therefore, the flame (C2) is jetted toward the primary combustion exhaust gas (B1) and the incineration ash (71) without being disturbed by the jet flow pressure of the secondary combustion air (A2), and the secondary combustion air. (A2) is ejected toward the primary combustion exhaust gas (B1) and the incineration ash (71) without being disturbed by the ejection flow pressure of the flame (C2). As a result, the amount of harmful substances remaining in the primary combustion exhaust gas (B1) can be further greatly reduced, and unburned substances remaining in the incineration ash (71) can be reliably burned.

  The secondary combustion air diffuser pipe (40) is detachably installed on the side wall (31) of the secondary combustion furnace (30) from the outer surface side of the side wall (31). When performing maintenance or replacement of the trachea (40), the secondary combustion air diffuser (40) can be easily removed from the installation location.

  Further, since the secondary combustion burner (45) is attached to the secondary combustion diffuser pipe (40), the secondary combustion burner (45) is removed by removing the secondary combustion diffuser pipe (40). Can be removed together with the secondary combustion air diffuser (40). Therefore, when performing maintenance or replacement of the secondary combustion burner (45), the secondary combustion burner (45) can be easily removed from the installation location.

  The incinerator (100) includes a preheating device (51) for preheating the secondary combustion air (A2) with the heat of the secondary combustion exhaust gas (B2). It is possible to suppress a decrease in the temperature in the secondary combustion furnace (30) that may be generated when the secondary combustion air (A2) is ejected. As a result, the inside of the secondary combustion furnace (30) can be maintained at a high temperature, and fuel consumption can be reduced.

  Moreover, since the incinerator (100) is provided with the dust collector (50) and the collection dust supply apparatus (55), the dust collected by the dust collector (50) is made into the secondary combustion furnace (30). Can be burned. Thereby, the amount of harmful substances contained in the dust can be greatly reduced.

  Although one embodiment of the present invention has been described above, the present invention is not limited to that shown in the above embodiment, and various setting changes can be made.

  For example, in the present invention, the incinerator (100) may not include the secondary combustion furnace (30).

  Moreover, in this embodiment, although the combustion exhaust gas discharge port (8) is provided in the position directly under the diffuser pipe (20) and auxiliary combustion burner (25) installation position on the other end side of the furnace body (2), In the invention, in addition, for example, the combustion exhaust gas discharge port (8) may be provided in a lower portion of the rear side wall portion (5) disposed on the other end side of the furnace body (2).

  Moreover, in this embodiment, although the axis | shaft of the furnace main body (2) of a primary combustion furnace (1) is arrange | positioned in the horizontal direction of a horizontal direction, in this invention, for example, a primary combustion furnace (1) is others. The furnace body (2) may be arranged in a lateral direction with its axis inclined with respect to the horizontal direction.

  The present invention includes cut grass, cut grass, pruned tree branches, fallen leaves, food waste, waste paper, cloth waste, synthetic resin waste, polymer waste, sludge, waste liquid (eg, waste oil, waste water), carcass of animals, It can be used in an incinerator that incinerates various incinerators such as household garbage.

FIG. 1 is a schematic longitudinal sectional view of an incinerator according to an embodiment of the present invention. FIG. 2 is a schematic horizontal sectional view of the incinerator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Incinerator 1 ... Primary combustion furnace 2 ... Furnace main body 3 ... Incinerator supply port 5 ... Rear side wall part 8 ... Common discharge port (primary combustion exhaust gas discharge port)
DESCRIPTION OF SYMBOLS 9 ... Shared discharge passage 10 ... Incinerated object pushing device 11 ... Pushing member 15 ... Rotation drive device 16 ... Rotational speed control device 20 ... Aeration pipe 25 ... Auxiliary burner 30 ... Secondary combustion furnace 31 ... Side wall part 40 ... Secondary combustion Aeration tube 45 ... secondary combustion burner 50 ... dust collector 51 ... preheating device 52 ... combustion air supply device 53 ... cooling tower 55 ... collected dust supply device 70 ... incinerator 71 ... incinerated ash 72 ... melt A1 ... primary combustion air A2 ... secondary combustion air B1 ... primary combustion exhaust gas B2 ... secondary combustion exhaust gas C1 ... flame C2 ... flame

Claims (5)

A furnace body (2) as a primary incinerator body ;
An incinerator pushing device (10) for pushing the incinerated object (70) into the furnace body in a direction toward the other end of the furnace body through an incinerated object supply port (3) provided at one end of the furnace body; ,
Installed on the other end of the furnace body, the combustion air (A1) is jetted toward the incineration object in the furnace body in a direction substantially opposite to the incineration object pushing direction by the incineration object pushing device. Air diffuser (20),
Installed in the vicinity of the diffuser pipe installation position on the other end of the furnace body, and flame (C1) is ejected toward the incinerator in the furnace body in approximately the same direction as the ejection direction of the combustion air ejected from the diffuser pipe The auxiliary burner (25) to do,
Provided near the trachea and burner air burner installation position diffuser in the other end of the furnace body, the primary combustion gas discharge port for discharging a primary flue gas (B1) in the furnace body (8),
An incinerator (100) equipped with
The furnace body (2) is formed in a cylindrical shape, is installed sideways, and is supported rotatably about an axis.
A rotary drive device (15) capable of controlling the rotation speed of the furnace body is configured so that the furnace body can rotate in one direction or swing around the axis ,
In addition, the incinerator (100)
A primary combustion exhaust gas discharge passage (9) extending downward from the primary combustion exhaust gas discharge port (8) and through which the primary combustion exhaust gas (B1) passes,
A secondary combustion furnace (30) that is installed in communication with the primary combustion exhaust gas discharge passage and performs secondary combustion of the primary combustion exhaust gas (B1) discharged through the primary combustion exhaust gas discharge passage;
With
The primary combustion exhaust gas outlet (8) is a common exhaust outlet that discharges both the primary combustion exhaust gas (B1) in the furnace body and the incineration ash (71) in the furnace body,
The primary combustion exhaust gas discharge passage (9) is a common discharge passage through which the primary combustion exhaust gas (B1) and the incineration ash (71) pass.
The secondary combustion furnace (30) is installed on the lower side of the furnace body, and the primary combustion exhaust gas (both discharged from the common discharge port through the common discharge passage into the secondary combustion furnace from above to below) An incinerator characterized by secondary combustion of B1) and incinerated ash (71) .   The incinerator according to claim 1, wherein the inner diameter of the furnace body (2) gradually increases in a direction from one end portion to the other end portion of the furnace body. The diffuser pipe (20) is detachably installed on the rear side wall part (5) arranged on the other end side of the furnace body from the outer surface side of the rear side wall part,
The incinerator according to claim 1 or 2, wherein an auxiliary burner (25) is attached to the air diffuser.   The incinerator according to claim 3, wherein the auxiliary burner (25) is arranged in the diffuser pipe (20). The incineration according to any one of claims 1 to 4, further comprising a preheating device (51) for preheating the combustion air (A1) with the heat of the secondary combustion exhaust gas (B2) discharged from the secondary combustion furnace. Furnace.

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