JP2005147460A - Incinerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an incinerator capable of heating organic wastes at low cost and efficiently processing gas generated by heating of the organic wastes. <P>SOLUTION: This incinerator 1 comprises a heater 10 heating the organic wastes Y. The heater 10 has a pipe conveyer 11 arranged inside a hot air flow channel 19. The heater 10 carries the organic wastes Y input into a pipe 12 of the pipe conveyer 11 while heating it from outside of the pipe by heat of hot blast flowing in the hot blast flow channel 19. As the hot blast, combustion waste gas N generated by combustion of an object H to be burned inside a combustion chamber 3 of an incinerator body 2 is supplied into the hot blast flow channel 19. The gas G generated by heating of the organic wastes Y inside the pipe 12 is sucked by a gas suction device 8 and the gas G sucked by the gas suction device 8 is supplied to the combustion chamber 3 of the incinerator body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an incinerator equipped with a heating device that heat-treats organic waste generated in a food processing factory, a paper pulp factory, a fiber processing factory, and the like.

  Since organic wastes such as sludge, livestock excrement, and cut grass are susceptible to spoilage and produce bad odors, various treatment methods have been proposed for organic wastes. As one of the methods, a method of heating and drying and carbonizing organic waste is conventionally known (see Patent Documents 1 and 2).

In this method, organic waste is put into a pipe (cylindrical body) of a pipe conveyor, and the organic waste is dried and carbonized by carrying it while being heated from the outside of the pipe by the heat of hot air. It is something to try.
Japanese Patent Laid-Open No. 2001-72980 (Claim 1, FIG. 1) JP 2003-64373 A (Claim 1, FIG. 1)

  However, in the above-described method, hot air generated by a hot air generating furnace is used as a heat source for heating the organic waste. Therefore, a fuel for generating hot air is required separately, and the hot air generating furnace However, there was a problem that the operating cost was increased.

  Further, in the above-described method, the gas generated in the pipe by heating the organic waste is supplied to the hot air generating furnace, but at this time, the gas in the pipe does not flow outside air into the pipe. The gas was sucked by the venturi effect, and the gas suction force was weak. For this reason, there is a problem that the amount of gas supplied to the hot-air generator is small and the gas processing efficiency is low.

  Further, in the above-described method, the inside of the pipe is in a pressure state higher than the atmospheric pressure, that is, a positive pressure state as the gas in the pipe is filled. Therefore, there is a possibility that the gas in the pipe leaks to the outside.

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to be able to heat-treat organic waste at a low cost and to efficiently generate gas generated by heating the organic waste. It is to provide an incinerator that can be treated.

  In order to achieve the above object, the present invention provides an incinerator having an incineration chamber for incineration of an incinerated object, wherein an organic waste input port and an exhaust port are provided in an annularly extending pipe, and the organic waste is An endless conveying means that can be circulated and conveyed includes a pipe conveyor provided in the pipe, and a heating device for heating organic waste having a hot air flow passage through which hot air passes, the pipe conveyor comprising the conveying means At least a part of the portion from the position of the inlet of the pipe to the position of the outlet in the direction of transporting the organic waste by is disposed in the hot air flow passage, and the heating device is connected to the pipe from the inlet The organic waste thrown into the inside is transported to the position of the discharge port by the transport means while being heated from the outside of the pipe by the heat of the hot air passing through the hot air flow passage. As the hot air, flue gas generated by combustion of the incineration object in the incineration chamber is supplied to the hot air flow passage of the heating device, while the organic waste is heated in the pipe. The generated gas is sucked by the gas suction device, and the gas sucked by the gas suction device is supplied to the incineration chamber (claim 1).

  In this incinerator, organic waste is introduced into the pipe of the pipe conveyor from the inlet. Then, in the heating device, while being heated from the outside of the pipe by the heat of the combustion exhaust gas as hot air passing through the hot air flow passage, it is carried out to the position of the discharge port by the conveying means of the pipe conveyor and discharged from the discharge port. . The discharged organic waste that has been discharged is, for example, put into an incineration chamber of an incinerator as an incinerator and incinerated, or effectively used as fertilizer, fuel, or the like. On the other hand, since the gas generated by heating the organic waste in the pipe contains a gas generating a bad odor such as methane, this gas is supplied into the incineration chamber and burned. Thereby, this gas is deodorized and detoxified.

  In the present invention, the type of the incinerated product to be incinerated in this incinerator is not limited. That is, the incinerated material may be, for example, heated organic waste described later, or may be other than this.

  Thus, according to this incinerator, the organic waste is conveyed while being stirred by the conveying means of the pipe conveyor when heated by the heating device. As a result, the organic waste is heated quickly, thereby shortening the heating time.

  Further, since the exhaust gas generated by the combustion of the incinerator in the incinerator of the incinerator is used as the hot air, no fuel for generating the hot air is required. Therefore, organic waste can be heated at low cost.

  Furthermore, since the gas generated by heating the organic waste in the pipe is forcibly sucked by the gas suction device, the gas can be reliably supplied into the incineration chamber, and the gas processing efficiency is improved. be able to.

  Furthermore, since the gas inside the pipe is sucked by the gas suction device, the inside of the pipe becomes a pressure state lower than the atmospheric pressure, that is, a negative pressure state, so that the gas inside the pipe leaks to the outside. Can be prevented.

  In the incinerator, the heating device is for heating and drying organic waste, and a gas suction pipe of the gas suction device is connected to a discharge port of the pipe, while the transport means An air suction port for attracting and sucking external air into the pipe by suction of the gas by the gas suction device at a position from the position of the inlet of the pipe to the position of the outlet in the conveying direction of the organic waste by It is desirable to be provided (Claim 2).

  According to this incinerator, an air suction port for attracting and sucking external air into the pipe by suction of gas by the gas suction device is provided at a predetermined portion of the pipe. Air is attracted from the gas suction port and sucked into the pipe. Therefore, the gas in the pipe flows smoothly to the discharge port. Accordingly, the gas can be more reliably supplied into the incineration chamber, and the gas processing efficiency can be further improved.

  In the incinerator, the heating device is for heating and carbonizing organic waste, and a vacuum pump is used as the gas suction device, and the inflow of external air into the pipe is prevented. In the blocked state, it is desirable that the inside of the pipe is brought into an oxygen-deficient state by sucking the gas in the pipe by the gas suction device.

  According to this incinerator, the organic waste is heated in an oxygen-deficient state. As a result, the organic waste can be efficiently carbonized.

  In the incinerator, a heated organic waste discharged from the pipe outlet to the gas suction pipe of the gas suction apparatus while the gas suction pipe of the gas suction apparatus is connected to the outlet of the pipe It is desirable that a solid-gas separation device for separating the gas from the gas and a gas-liquid separation device for separating water from the gas separated by the solid-gas separation device are provided.

  According to this incinerator, since the solid-gas separation device is provided in the gas suction pipe of the gas suction device, the solid-gas separation device can reliably separate the gas from the heated organic waste, Heated organic waste can be reliably recovered. Furthermore, since the gas / liquid separator is provided in the gas suction tube, the gas / liquid separator can reliably separate the moisture from the gas. Therefore, the gas processing efficiency can be further improved, and the fuel and time required for gas processing can be greatly reduced.

  In the incinerator, a cyclone separator is used as the solid-gas separator, and a discharge port opening / closing device for opening and closing the discharge port is provided at a heated organic waste discharge port of the cyclone separator. (Claim 5).

  According to this incinerator, the heated organic waste discharge port of the cyclone separator is closed by the discharge opening / closing device so that the heated organic waste of the cyclone separator is sucked when the gas in the pipe is sucked by the gas suction device. It is possible to prevent a problem that external air is sucked from the object discharge port. Therefore, the gas in the pipe can be reliably sucked.

  In the incinerator, it is desirable that a condenser is used as the gas-liquid separator.

  According to this incinerator, steam such as water vapor contained in the gas is condensed by the condenser and the temperature of the gas is lowered. Thereby, the pressure of the gas supplied to the condenser decreases. As a result, the gas in the pipe is attracted to the condenser. Therefore, the gas in the pipe can be sucked more reliably.

  In the incinerator, it is desirable that the entire portion of the pipe disposed in the hot air flow passage is formed in a substantially U shape in plan view.

  According to this incinerator, the entire portion of the pipe disposed in the hot air flow passage (the portion is referred to as a “heating tube portion”) is formed in a substantially U shape in plan view. This structure can be simplified, and maintenance of the heating device can be easily performed. In addition, the transport direction of the organic waste in the pipe conveyor can be easily switched by appropriately changing the position of the inlet of the pipe and the moving direction of the transport means.

  Furthermore, since the heating tube portion of the pipe is formed in a substantially U shape, the heating tube portion of the pipe is folded only once. Therefore, compared with the case where the heating pipe portion of the pipe is formed in a zigzag shape like the pipe conveyor of the heating device described in Patent Document 1, the gas in the pipe flows smoothly, and therefore Gas can be sucked even more reliably.

  Furthermore, since there is only one place where the heating tube portion of the pipe is folded, the expansion and contraction direction by heating the pipe is one direction. Therefore, it is not always necessary to attach a flexible joint member to the heating pipe portion of the pipe as in the pipe conveyor of the heating device described in Patent Document 2, and the structure of the heating device can be further simplified.

  According to the incinerator according to the present invention, the organic waste is conveyed while being agitated by the conveying means of the pipe conveyor, so that the organic waste is rapidly heated and the heating time can be shortened. .

  Further, since the exhaust gas generated by the combustion of the incinerator in the incinerator of the incinerator is used as the hot air, no fuel for generating the hot air is required. Therefore, organic waste can be heated at low cost.

  Furthermore, the gas generated by heating organic waste in the pipe of the pipe conveyor is forcibly sucked by the gas suction device, so that the gas can be reliably supplied into the incineration chamber, and the gas processing efficiency Can be improved.

  Further, since the gas inside the pipe is sucked by the gas suction device, the inside of the pipe is in a negative pressure state, so that a problem that the gas inside the pipe leaks to the outside can be prevented.

  In the above incinerator, the heating device heats and discharges organic waste, and the gas suction pipe of the gas suction device is connected to the discharge port of the pipe, while the organic waste by the transport means is disposed. When an air suction port for attracting and sucking external air into the pipe by suction of gas by a gas suction device is provided at a position from the position of the pipe inlet to the position of the outlet in the material transport direction (claim) 2) has the following effects.

  That is, since an air suction port for attracting and sucking external air into the pipe by suction of gas by the gas suction device is provided at a predetermined portion of the pipe, from the air suction port at the time of gas suction by the gas suction device. External air is drawn into the pipe. Therefore, the gas in the pipe flows smoothly to the discharge port. Accordingly, the gas can be supplied more reliably into the incineration chamber, and the gas processing efficiency can be further improved.

  Further, in the above incinerator, the heating device is for heating and carbonizing organic waste, and a vacuum pump is used as a gas suction device to prevent inflow of external air into the pipe. In this state, when the inside of the pipe is brought into an oxygen-deficient state by sucking the gas in the pipe with the gas suction device (claim 3), the following effects are obtained.

  That is, since the inside of the pipe is in an oxygen-deficient state when the organic waste is heated, the organic waste can be efficiently carbonized. Furthermore, the carbonized organic waste carbonized in this way can be effectively used as a fuel or the like.

  Further, in the above incinerator, when a predetermined solid-gas separation device and a gas-liquid separation device are provided in the gas suction pipe of the gas suction device (claim 4), the following effects are obtained.

  In other words, since the gas suction pipe of the gas suction device is provided with a solid-gas separation device, the solid-gas separation device can reliably separate the gas from the heated organic waste, and the heated organic waste Goods can be reliably recovered. Furthermore, since the gas / liquid separator is provided in the gas suction tube, the gas / liquid separator can reliably separate the moisture from the gas. Therefore, the gas processing efficiency can be further improved, and the fuel and time required for gas processing can be greatly reduced.

  In the above incinerator, when a cyclone separator is used as a solid-gas separator, and an opening / closing device for opening and closing the outlet is provided at the heated organic waste outlet of the cyclone separator ( Claim 5) has the following effects.

  That is, by closing the heated organic waste discharge port of the cyclone separator by the discharge opening / closing device, the external air is discharged from the heated organic waste discharge port of the cyclone separator when the gas in the pipe is sucked by the gas suction device. It is possible to prevent the problem of inhalation. Therefore, the gas in the pipe can be reliably sucked.

  Moreover, in the said incinerator, when a condenser is used as a gas-liquid separator (Claim 6), there exists the following effect.

  That is, steam such as water vapor in the gas is condensed by the condenser and the temperature of the gas is lowered, so that the pressure of the gas supplied to the condenser is lowered. As a result, the gas in the pipe is attracted to the condenser, so that the gas in the pipe can be sucked more reliably and the gas suction efficiency can be improved.

  Moreover, in the said incinerator, when the whole site | part arrange | positioned in the hot air flow path of a pipe is formed in planar view substantially U shape (Claim 7), there exists the following effect.

  That is, the entire portion of the pipe disposed in the hot air flow passage (the portion is referred to as a “heating tube portion”) is formed in a substantially U shape in plan view, thereby simplifying the structure of the heating device. The maintenance of the heating device can be easily performed. In addition, the transport direction of the organic waste in the pipe conveyor can be easily switched by appropriately changing the position of the inlet of the pipe and the moving direction of the transport means.

  Furthermore, since the heating tube portion of the pipe is formed in a substantially U shape, the heating tube portion of the pipe is folded only once. Therefore, compared with the case where the heating pipe portion of the pipe is formed in a zigzag shape like the pipe conveyor of the heating device described in Patent Document 1, the gas in the pipe flows smoothly, and therefore Gas can be sucked even more reliably.

  Furthermore, since there is only one place where the heating tube portion of the pipe is folded, the expansion and contraction direction by heating the pipe is one direction. Therefore, it is not always necessary to attach a flexible joint member to the heating pipe portion of the pipe as in the pipe conveyor of the heating device described in Patent Document 2, and the structure of the heating device can be further simplified.

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

  1 (A), (B) and (C), (1) is the incinerator of this embodiment. As shown in FIG. 1A, the incinerator (1) includes an incinerator main body (2) and a heating device (10).

  The incinerator main body (2) is for incinerating the incineration object (H), and has an incineration chamber (3) for incinerating the incineration object (H). In this incinerator main body (2), various incinerators including the heated organic waste (Y ′) described later are incinerated as incinerators (H). In addition, (2a) is an inlet for charging the incineration object (H) into the incineration chamber (3).

  The heating device (10) is for heat-treating organic waste (Y) such as sludge, livestock dung, and cut grass.

  The interior of the incinerator (3) of the incinerator body (2) is partitioned by a partition wall (4), and a secondary combustion chamber (3a) is formed on the rear side of the partition wall (4). A combustion exhaust gas flow passage (4a) that communicates the incineration chamber (3) and the secondary combustion chamber (3a) is provided below the partition wall (4).

  In this incineration chamber (3), an air diffuser (6) for supplying combustion air (K) to the incineration chamber (3) is arranged. In this embodiment, the lower part of the diffuser pipe (6) is arranged at a position inside the opening of the combustion exhaust gas flow passage (4a) in the incineration chamber (3). The combustion air (K) is jetted into the incineration chamber (3) from the jet port (6a) drilled in the air diffuser (6), and the combustion air (K) is supplied. .

  Further, an auxiliary combustion burner (7) and an auxiliary combustion fuel supply pipe (7a) for supplying auxiliary combustion fuel to the auxiliary combustion burner (7) are arranged inside the diffuser pipe (6). (F) is a flame ejected from the auxiliary burner (7).

  A combustion exhaust gas discharge pipe (5) extends upward on the top wall of the secondary combustion chamber (3a) of the incinerator main body (2).

  The heating device (10) includes a pipe conveyor (11) and a hot air flow passage (19).

  The pipe conveyor (11) has a pipe (12) as a trough extending in an annular shape and endless conveying means (20) provided in the pipe (12) (see FIG. 2).

  As shown in FIG. 1B, the pipe (12) includes a heating pipe part (13) formed by bending in a substantially U shape in plan view, and a connection obtained by connecting both ends of the heating pipe part (13). And a pipe portion (14). The heating pipe part (13) is disposed substantially horizontally above the incinerator body (2) as shown in FIG. On the other hand, the connecting pipe part (14) is bent substantially downward from both ends of the heating pipe part (13). The total length of the heating tube (13) is about 20 m, for example.

  The endless conveying means (20) is for conveying the organic waste (Y) and can be circulated. That is, as shown in FIG. 1 (C), the conveying means (20) can be circulated and moved by a driving device (15) having a sprocket or the like.

  As shown in FIG. 2, the conveying means (20) is configured such that a large number of receiving bodies (22) are provided at predetermined intervals on a bendable endless strip (21) made of a metal chain or the like. is there. In this embodiment, a substantially disk-shaped blade is used as the receiving body (22). Furthermore, a substantially semicircular gas circulation hole (22a) through which a gas (G) generated by heating the organic waste (Y) flows is provided in the upper half of each blade. The organic waste (Y) is conveyed in a state of being received by the receptacle (22).

  In the pipe (12) of the pipe conveyor (11), as shown in FIG. 1 (B), an organic waste charging port (16) is provided at one end of the heating pipe portion (13) having a substantially U shape in plan view. It has been. On the other hand, as shown in FIG. 1C, an organic waste discharge port (17) is provided in a part of the connecting pipe portion (14). However, in this pipe conveyor (11), the organic waste (Y) charged into the pipe (12) from the charging port (16) is transferred to the bent portion of the heating pipe (13) by the conveying means (20). After being sequentially conveyed to the other end of the heating pipe (13) and the connecting pipe (13), it is discharged from the discharge port (17) (see FIG. 4). In FIG. 1 (B) and FIG. 4, arrow S has shown the conveyance direction of the organic waste (Y) by this conveyance means (20).

  Furthermore, in this pipe conveyor (11), the part from the position of the inlet (16) of the pipe (12) to the position of the outlet (17) in the direction (S) of organic waste transported by the transport means (20) Is surrounded by the outer shell (18) of the heating device (10). More specifically, in the pipe competitor (11) of the present embodiment, the entire heating pipe section (13) of the pipe (12), that is, the heating pipe section in the organic waste transport direction (S) by the transport means (20). A portion from one end portion to the other end portion of (13) is surrounded by a mantle body (18).

  As shown in FIG. 3, the jacket (18) is formed of a heat insulating material such as silica board, and the inside of the jacket (18) serves as the hot air flow passage (19). In this outer shell (18), a partition wall (18a) is provided between two straight pipe portions of the heating pipe portion (13) of the pipe (12), and the inner portion of the outer shell (18) is A hot air flow passage (19) which is partitioned by the partition wall (18a) and meanders in a substantially U shape in plan view along the heating tube portion (13) is formed inside the outer shell (18). And as above-mentioned in this hot-air flow path (19), the whole heating pipe part (13) of a pipe (12) is arrange | positioned.

  The combustion exhaust gas exhaust pipe (5) of the incinerator body (2) is connected to the hot air supply port (19a) of the hot air flow passage (19) of the outer casing (18) (see FIG. 4). Combustion exhaust gas (N) generated in the incinerator (3) of the incinerator main body (2) is supplied to the hot air flow passage (19) from the hot air supply port (19a) through the combustion exhaust gas discharge pipe (5) It has been.

  On the other hand, the suction pipe (30a) of the combustion exhaust gas suction fan (30) is connected to the hot air outlet (19b) of the hot air flow passage (19) of the outer casing (18). The suction fan (30) is for sucking the combustion exhaust gas (N) in the hot air flow passage (19). The combustion exhaust gas (N) sucked by the suction fan (30) is sent to the chimney (not shown) through the discharge pipe (30b) of the suction fan (30), and is discharged from the chimney to the outside.

  In addition, air is sucked into the middle part of the part from the position of the inlet (16) to the position of the outlet (17) of the pipe (12) in the direction (S) of transporting the organic waste by the transport means (20). A mouth (25) is provided. In the present embodiment, the air inlet (25) is provided in the vicinity of the bent portion of the heating pipe (13) of the pipe (12). The air inlet (25) is provided with an air inlet opening / closing valve (26) for opening and closing the air inlet (25).

  Thus, the heating device (10) converts the organic waste (Y) charged into the pipe (12) from the inlet (16) into the combustion exhaust gas (hot air) as hot air passing through the hot air flow passage (19). While being heated from the outside of the pipe (12) by the heat of N), it is transported to the position of the discharge port (17) by the transport means (20).

  In the heating device (10), a hopper (27) is provided at the charging port (16) via a charging port opening / closing device (28) that opens and closes the charging port (16). The inlet opening / closing device (28) has, for example, a double door structure in order to keep the inside of the pipe (12) airtight at all times.

  On the other hand, the gas suction pipe (8a) of the gas suction device (8) is connected to the discharge port (17). This gas suction device (8) is for sucking the gas (G) generated by heating the organic waste (Y) in the pipe (12), and this gas suction device (8) will be described later. As described above, either one of the gas suction fan (8A) and the vacuum pump (8B) is used. By sucking the gas (G) in the pipe (12) by this gas suction device (8), the inside of the pipe (12) becomes a pressure state lower than the atmospheric pressure, that is, a negative pressure state. External air (B) is attracted and sucked into the pipe (12) from the air suction port (25).

  Further, a cyclone separator (33) serving as a solid-gas separation device is provided at a gas suction direction intermediate portion of the gas suction tube (8a) of the gas suction device (8), and a cyclone in the gas suction tube (8a) is provided. A condenser (35) such as a condenser as a gas-liquid separator is provided at a position downstream of the position where the separator (33) is provided.

  The cyclone separator (33) is for separating the gas (G) from the heated organic waste (Y ′) discharged from the outlet (17) of the pipe (12). The heated organic waste outlet (33a) of the cyclone separator (33) is provided with an outlet opening / closing device (32) for opening and closing the outlet (33a). The outlet opening / closing device (32) has, for example, a double door structure in order to prevent outside air from inadvertently flowing from the outlet (33a). The heated organic waste (Y ′) separated by the cyclone separator (33) is discharged into the discharge port (33a) while the discharge port (33a) is opened by the discharge port opening / closing device (32). ) And stored in the storage tank (34).

  The condenser (35) is for separating moisture from the gas (G) separated by the cyclone separator (33). The gas (G) is obtained by cooling the gas (G) with cooling water (38). ) Vapor such as water vapor contained therein is condensed and liquefied to separate water. The condensed water (37) condensed by the condenser (35) is accommodated in the water storage tank (38). In this way, the vapor in the gas (G) is condensed by the condenser (35) and the temperature of the gas (G) is lowered, so that the pressure of the gas (G) supplied to the condenser (35) is lowered. As a result, the gas (G) in the pipe (12) is attracted to the condenser (35).

  On the other hand, the gas discharge pipe (8b) of the gas suction device (8) is connected to the air diffuser pipe (6) of the incinerator main body (2), whereby the gas ( G) is supplied in a mixed state with combustion air (K) through the gas discharge pipe (8b) and the diffuser pipe (6) into the incineration chamber (3) of the incinerator main body (2). It has been made. This gas (G) is combusted together with the incinerated object (H) in the incineration chamber (3). By burning the gas (G) in this way, the gas (G) is deodorized and detoxified.

  Further, a combustion air supply blower (31) is provided in the gas discharge pipe (8b) of the gas suction device (8). This blower (31) is for supplying combustion air (K) to the incineration chamber (3) of the incinerator main body (2). By operating this blower (31), the gas flowing through the gas discharge pipe (8b) of the gas suction device (8) is supplied to the incineration chamber (3) in a state mixed with the combustion air (K).

  Thus, in the incinerator (1) of the present embodiment, when the heating device (10) is for heating and drying the organic waste (Y), the gas suction device (8). A gas suction fan (8A) is used. In this case, the gas (G) sucked by the gas suction fan (8A) becomes a gas generated by the drying treatment of the organic waste (Y), that is, “dry exhaust gas”.

  On the other hand, when the heating device (10) is for heating and carbonizing the organic waste (Y), a vacuum pump (8B) is used as the gas suction device (8). In this case, the gas (G) sucked by the vacuum pump (8B) becomes a gas generated by carbonization of the organic waste (Y), that is, “dry distillation exhaust gas”.

  Below, operation | movement of the incinerator (1) of this embodiment is demonstrated with reference to FIG. 4 according to each process use of a heating apparatus (10).

<When drying organic waste>
When the organic waste (Y) is heated and dried, the gas suction fan (8A) is used as the gas suction device (8) as described above. In this case, the air inlet (25) is always opened by the on-off valve (26).

  The incinerator (H) charged into the incinerator (3) of the incinerator main body (2) has combustion air (K) in the incinerator (3) from the outlet (6a) of the air diffuser (6). In the state of being blown out and supplied, the flame (F) blown out from the auxiliary burner (7) is burned, and the incinerated object (H) is burned. Then, when the incinerated object (H) reaches a temperature at which it can combust, the flame (F) of the auxiliary burner (7) is extinguished. Thereafter, it is not necessary to supply auxiliary combustion fuel to the auxiliary combustion burner (7), and the incinerated object (H) is self-combusted with the combustion air (K) being jetted.

  Combustion exhaust gas (N) generated by combustion of the incinerated material (H) in the incineration chamber (3) is secondarily combusted in the secondary combustion chamber (3a), and harmful gas components such as dioxin and smoked gas components Are removed from the combustion exhaust gas supply port (19a) through the combustion exhaust gas discharge pipe (5) and into the hot air flow passage (19) of the heating device (10). The temperature of the combustion exhaust gas (N) when supplied to the hot air flow passage (19) is set to about 600 to 700 ° C., for example.

  On the other hand, at a predetermined time, the gas suction fan (8A) is operated, and the gas (G) in the pipe (12) of the pipe conveyor (11) is sucked by the gas suction fan (8A). Due to this suction, the inside of the pipe (12) is in a pressure state slightly lower than the atmospheric pressure, that is, a negative pressure state, so that the external air (B) flows from the air inlet (25) into the pipe (12). Be attracted and inhaled. Further, the driving device (15) of the pipe conveyor (10) is operated to circulate and move the conveying means (20).

  The combustion exhaust gas (N) supplied to the hot air flow passage (19) is sucked by the suction fan (30) for combustion exhaust gas, so that the heating pipe part (13) of the pipe (12) of the pipe conveyor (11) is drawn. It is discharged from the hot air outlet (19b) through the hot air flow passage (19) while being heated and sent to the chimney. The temperature of the combustion exhaust gas (N) when discharged from the hot air flow passage (19) is, for example, about 100 to 200 ° C.

  Thus, the organic waste (Y) is put into the hopper (27) in a state where the combustion exhaust gas (N) is continuously supplied to the hot air flow passage (19). Then, after opening the input port (16) by the input port opening / closing device (28), the organic waste (Y) is input from the input port (16) into the pipe (12) by the hopper (27). The input port (16) is opened by the input port opening / closing device (28) every time the organic waste (Y) is input, and is closed after the input.

  The organic waste (Y) charged into the pipe (12) from the inlet (16) is caused by the heat of the combustion exhaust gas (N) flowing through the hot air flow passage (19) from the outside of the pipe (12). While being indirectly heated, the conveying means (20) sequentially turns the bent portion of the heated tube portion (13) of the pipe (12), the other end portion of the heated tube portion (13), and the connecting tube portion (14). After being conveyed, it is discharged from the discharge port (17). Furthermore, the organic waste (Y) is stirred by the transport means (20) in this way, and the organic waste (Y) is heated in this stirred state. It becomes. In addition, the conveyance speed of organic waste (Y) is set to about 0.1-1 m / min, for example.

  When the organic waste (Y) is heated in the heating pipe (13) of the pipe (12), the moisture and odor components contained in the organic waste (Y) are evaporated and become organic. The organic waste (Y) is dried, and gas (G) accompanying the drying of the organic waste (Y), that is, “dry exhaust gas” is generated in the heating pipe portion (13) of the pipe (12). . Hereinafter, the code | symbol of dry waste gas is attached | subjected with G.

  The dried exhaust gas (G) is sucked by the gas suction fan (8A), and thereby heated organic waste (Y ′) (ie, organic waste ( Y) and the dried processed product). Further, the dry exhaust gas (G) is sucked by the gas suction fan (8A) in this way, so that the external air (B) is attracted and sucked into the pipe (12) from the air suction port (25) as described above.

  The heated organic waste (Y ′) and the dried exhaust gas (G) discharged from the discharge port (17) are separated by the cyclone separator (33).

  The separated heated organic waste (Y ') is in a state where the heated organic waste outlet (33a) of the cyclone separator (33) is opened by the outlet opening and closing device (32). And discharged from the discharge port (33a) and accommodated in the storage tank (34). The discharge port (33a) is opened by the discharge port opening / closing device (32) every time the heated organic waste (Y ′) is discharged, and is closed after discharge.

  On the other hand, the separated dry exhaust gas (G) is supplied to the condenser (35). Then, steam such as water vapor contained in the dry exhaust gas (G) is condensed and liquefied by the condenser (35) and stored in the water storage tank (36) as condensed water (37).

  The dried exhaust gas (G) that has passed through the condenser (35) is sucked by the gas suction fan (8A), and then sequentially passes through the gas discharge pipe (8b) and the air diffusion pipe (6) of the gas suction fan (8A). It is supplied to the incinerator (3) of the incinerator main body (2) in a mixed state with the combustion air (K) by the combustion air supply blower (31). As a result, the dried exhaust gas (G) is combusted together with the incinerated material (H), so that the dried exhaust gas (G) is deodorized and detoxified.

  The dried exhaust gas (G) thus treated passes through the secondary combustion chamber (3a) and the combustion gas discharge pipe (5) as combustion exhaust gas (N) in order, and passes through the hot air flow passage (19) of the heating device (10). ).

  On the other hand, the heated organic waste (Y ′) accommodated in the storage tank (34) is transported to the incinerator main body (2) by a transport device (39) such as a conveyor, and is incinerated as an incinerator (H). It is put into the incineration chamber (3) of the main body (2) and incinerated, or is effectively used as fertilizer, fuel or the like.

  The condensed water (37) stored in the water storage tank (36) is discharged after deodorizing or detoxifying, or is used for temperature adjustment in the incinerator (3) of the incinerator body (2). Supplied as water.

  Thus, according to the incinerator (1) having the above structure, the organic waste (Y) is conveyed while being agitated by the conveying means (20) of the pipe conveyor (11). The waste (Y) can be quickly dried and the time required for the drying can be shortened.

  Furthermore, since the combustion exhaust gas (N) generated by the combustion of the incineration object (H) in the incineration chamber (3) of the incinerator main body (2) is supplied to the hot air flow passage (19) as hot air, No additional fuel is required to generate Therefore, the organic waste (Y) can be dried at a low cost.

  Furthermore, since the dry exhaust gas (G) generated by heating the organic waste (Y) in the pipe (12) is forcibly sucked by the gas suction fan (8A), the dry exhaust gas (G) is incinerated in the incineration chamber. (3) can be reliably supplied, so that the processing efficiency of the dry exhaust gas (G) can be improved.

  Furthermore, when the dry exhaust gas (G) in the pipe (12) is sucked by the gas suction fan (8A), the inside of the pipe (12) becomes a pressure state slightly lower than the atmospheric pressure, that is, a negative pressure state. Therefore, it is possible to prevent a problem that the dried exhaust gas (G) in the pipe (12) leaks to the outside.

  Furthermore, an air suction port (25) is provided at a predetermined portion of the pipe (12), and the air suction port (25) is open, so that when the exhaust gas (G) is sucked by the gas suction fan (8A), External air (B) is attracted and sucked into the pipe (12) from the air inlet (25). Therefore, the dry exhaust gas (G) in the pipe (12) flows smoothly to the discharge port (17). Therefore, the dry exhaust gas (G) can be more reliably supplied to the incineration chamber (3), and the processing efficiency of the dry exhaust gas (G) can be further improved.

  Further, since the gas suction pipe (8a) of the gas suction fan (8A) is provided with a cyclone separator (33) as a solid-gas separation device, the organic waste heated by the cyclone separator (33) ( The dry exhaust gas (G) can be reliably separated from Y ′), and the heated organic waste (Y ′) can be reliably recovered.

  Further, by closing the heated organic waste outlet (33a) of the cyclone separator (33) by the outlet opening and closing device (32), the dry exhaust gas (G) in the pipe (12) by the gas suction fan (8A) ) Can be prevented from being sucked from the heated organic waste outlet (33a) of the cyclone separator (33). Therefore, the dry exhaust gas (G) in the pipe (12) can be reliably sucked.

  In addition, the gas suction pipe (8a) of the gas suction fan (8A) is provided with a condenser (35) as a gas-liquid separator, so that moisture can be reliably removed from the dry exhaust gas (G) by this condenser (35). Can be separated. Therefore, the treatment efficiency of the dry exhaust gas (G) can be further improved, and the fuel and time required for the treatment of the dry exhaust gas (G) can be greatly reduced.

  Further, steam such as water vapor in the dry exhaust gas (G) is condensed by the condenser (35) and the temperature of the dry exhaust gas (G) is lowered. Thereby, the pressure of the dry exhaust gas (G) supplied to the condenser (35) decreases. As a result, the dry exhaust gas (G) in the pipe (12) is attracted to the condenser (35). Therefore, the dry exhaust gas (G) in the pipe (12) can be sucked more reliably.

  Furthermore, the incinerator (1) having the above-described configuration has the following advantages.

  That is, in this incinerator (1), the entire portion of the pipe (12) of the pipe conveyor (11) arranged in the hot air flow passage (19), that is, the heating pipe portion (13) of the pipe (12). Since the entirety is formed in a substantially U shape in plan view, the structure of the heating device (10) can be simplified, and maintenance of the heating device (10) can be easily performed. In addition, by changing the position of the inlet (16) of the pipe (12) and the moving direction of the transport means (20), the transport direction (S) of the organic waste (Y) in the pipe conveyor (11) can be changed. It can be switched easily.

  Furthermore, since the heating pipe part (13) of the pipe (12) is formed in a substantially U shape, the heating pipe part (13) of the pipe (12) is folded only once. Therefore, compared with the case where the heating pipe part (13) of the pipe (12) is formed in a zigzag shape like the pipe conveyor of the heating device described in Patent Document 1, the gas (G) in the pipe (12). Flows smoothly, so that the gas (G) in the pipe (12) can be sucked more reliably.

  Furthermore, since the heating tube portion (13) of the pipe (12) has only one folded portion, the expansion and contraction direction due to heating of the pipe (12) is one direction. Therefore, it is not always necessary to attach a flexible joint member to the heating pipe portion (13) of the pipe (12) as in the pipe conveyor of the heating device described in Patent Document 2, and thus the structure of the heating device (10). Can be further simplified.

<When carbonizing organic waste>
When the organic waste (Y) is heated and carbonized, the vacuum pump (8B) is used as the gas suction device (8) as described above. In this case, the air inlet (25) is always closed by the on-off valve (26).

  The incinerated object (H) charged into the incineration chamber (3) of the incinerator main body (2) is combusted in the same manner as above. The combustion exhaust gas (N) generated by the combustion of the incinerated object (H) in the incineration chamber (3) sequentially passes through the secondary combustion chamber (3a) and the combustion exhaust gas discharge pipe (5) to the heating device (10 ) Is supplied to the hot air flow passage (19). The temperature of the combustion exhaust gas (G) when supplied to the hot air flow passage (19) is set to, for example, about 600 to 700 ° C. as in the above case.

  On the other hand, at a predetermined time, the vacuum pump (8B) is operated, and the vacuum pump (8B) sucks (G) in the pipe (12) of the pipe conveyor (11), and depressurizes the inside of the pipe (12). Or the inside of the pipe (12) is made into an oxygen-deficient state by making a vacuum state. Specifically, the inside of the pipe (12) is brought into a reduced pressure or vacuum state of, for example, 80 kPa or less (particularly desirably 60 kPa or less).

  The flue gas (N) supplied to the hot air flow passage (19) is sucked by the flue gas exhaust fan (30) as in the above case to heat the pipe (12) of the pipe conveyor (11). While heating the pipe part (13), it is discharged from the hot air outlet (19b) through the hot air flow passage (19) and sent to the chimney. The temperature of the combustion exhaust gas (N) when discharged from the hot air flow passage (19) is, for example, about 100 to 200 ° C.

  With the combustion exhaust gas (N) continuously supplied to the hot air flow passage (19) in this way, the organic waste (Y) is put into the hopper (27) as in the above case. After opening the inlet (16) of the pipe (12) of the pipe conveyor (11) by the inlet opening and closing device (28), the organic waste (Y) is removed from the inlet (16) by the hopper (27). Put in the pipe (12). The input port (16) is opened by the input port opening / closing device (28) every time the organic waste (Y) is input, and is closed after the input. Therefore, the inside of the pipe (12) is kept airtight.

  The organic waste (Y) charged into the pipe (12) from the inlet (16) is heated from the combustion exhaust gas (N) flowing through the hot air flow passage (19) from the outside of the pipe (12). To the bent part of the heating pipe part (13) of the pipe (12), the other end part of the heating pipe part (13), and the connecting pipe part (14) by the conveying means (20). After being sequentially conveyed, it is discharged from the discharge port (17). Further, the organic waste (Y) is conveyed by the conveying means (20), whereby the organic waste (Y) is stirred, and the organic waste (Y) is heated in this stirred state. Become. Furthermore, since the air inlet (25) is closed by the on-off valve (26), there is no possibility that the external air (B) flows into the pipe (12) when the organic waste (Y) is heated. In addition, the conveyance speed of organic waste (Y) at this time is about 0.1-1 m / min, for example.

  In this way, the organic waste (Y) is heated in the heating pipe portion (13) of the pipe (12) in a state where the inflow of the external air (B) into the pipe (12) is blocked, thereby organic The waste (Y) is pyrolyzed and carbonized, and the gas (G) accompanying the carbonization of the organic waste (Y) in the heating pipe portion (13) of the pipe (12), that is, “dry distillation exhaust gas” Is generated. Hereinafter, the code | symbol of dry distillation exhaust gas is attached | subjected with G.

  This dry distillation exhaust gas (G) is sucked by the vacuum pump (8B), and thereby heated organic waste (Y ′) (that is, organic waste carbide from the outlet (17) of the pipe (12). ).

  The heated organic waste (Y ′) and the dry distillation exhaust gas (G) discharged from the discharge port (17) are separated from each other by the cyclone separator (33).

  The separated heated organic waste (Y ′) is opened by the opening / closing device (32) of the heated organic waste outlet (33a) of the cyclone separator (33) as in the above case. Under the condition, it is discharged from the discharge port (33a) and stored in the storage tank (34). The discharge port (33a) is opened by the discharge port opening / closing device (32) every time the heated organic waste (Y ′) is discharged, and is closed after discharge.

  On the other hand, the separated carbonization exhaust gas (G) is supplied to the condenser (35) as in the above case. Then, steam such as water vapor contained in the dry distillation exhaust gas (G) is condensed and liquefied by the condenser (35), and stored in the water storage tank (36) as condensed water (37).

  The dry distillation exhaust gas (G) that has passed through the condenser (35) is sucked by the vacuum pump (8B), and then the gas discharge pipe (8b) and the diffuser pipe (6) of the vacuum pump (8B) as in the above case. Are sequentially supplied to the incinerator (3) of the incinerator main body (2) in a mixed state with the combustion air (K) by the combustion air supply blower (31). As a result, the dry distillation exhaust gas (G) is combusted together with the incinerated material (H), and the dry distillation exhaust gas (G) is deodorized and detoxified.

  On the other hand, the heated organic waste (Y ′) stored in the storage tank (34) is effectively used as fuel or the like.

  The condensed water (37) stored in the water storage tank (36) is discharged after deodorizing or detoxifying, or is used for temperature adjustment in the incinerator (3) of the incinerator body (2). Supplied as water.

  Thus, according to the incinerator (1) having the above structure, the organic waste (Y) is conveyed while being agitated by the conveying means (20) of the pipe conveyor (11). The waste (Y) can be carbonized quickly, and the time required for carbonization can be shortened.

  Furthermore, as hot air, the dry distillation exhaust gas (G) generated by the combustion of the incinerator (H) in the incineration chamber (3) of the incinerator main body (2) is supplied to the hot air flow passage (19). No additional fuel is required to generate Therefore, the organic waste (Y) can be carbonized at a low cost.

  Furthermore, since the dry distillation exhaust gas (G) generated by heating the organic waste (Y) in the pipe (12) is forcibly sucked by the vacuum pump (8B), the dry distillation exhaust gas (G) is removed from the incineration chamber ( 3) can be reliably supplied, so that the treatment efficiency of the dry distillation exhaust gas (3) can be improved.

  Furthermore, since the dry distillation exhaust gas (G) in the pipe (12) is sucked by the vacuum pump (8B), the inside of the pipe (12) becomes a pressure state lower than the atmospheric pressure, that is, a negative pressure state. The trouble that the dry distillation exhaust gas (G) in the pipe (12) leaks to the outside can be prevented.

  Furthermore, although the air suction port (25) is provided in a predetermined part of the pipe (12), the air suction port (25) is closed by the on-off valve (26). There is no possibility that the external air (B) flows into the pipe (12) during the heating of Y). Therefore, when the organic waste (Y) is heated, the inside of the pipe (12) is in an oxygen-deficient state. Therefore, the organic waste (Y) can be carbonized efficiently.

  Further, since the gas suction pipe (8a) of the vacuum pump (8B) is provided with a cyclone separator (33) as a solid-gas separation device, the organic waste (Y The dry distillation exhaust gas (G) can be reliably separated from '), and the heated organic waste (Y') can be reliably recovered.

  Furthermore, by closing the heated organic waste outlet (33a) of the cyclone separator (33) by the outlet opening and closing device (32), the dry distillation exhaust gas (G) in the pipe (12) by the vacuum pump (8B) When the air is sucked, it is possible to prevent a problem that external air is sucked from the heated organic waste outlet (33a) of the cyclone separator (33). Therefore, the dry distillation exhaust gas (G) in the pipe (12) can be reliably sucked.

  Further, the gas suction pipe (8a) of the vacuum pump (8B) is provided with a condenser (35) as a gas-liquid separator, so that moisture can be reliably removed from the dry distillation exhaust gas (G) by this condenser (35). Can be separated. Therefore, the processing efficiency of the dry distillation exhaust gas (G) can be further improved.

  Furthermore, vapor | steam, such as water vapor | steam in dry distillation exhaust gas (G), is condensed by a condenser (35), and the pressure of the dry distillation exhaust gas (G) supplied to the condenser (35) falls. As a result, the dry distillation exhaust gas (G) in the pipe (12) is attracted to the condenser (35). Therefore, the dry distillation exhaust gas (G) in the pipe (12) can be more reliably sucked.

  Although the incinerator (1) of this embodiment was demonstrated above, the incinerator which concerns on this invention is not limited to what was shown to the said embodiment, A setting change can be carried out variously.

  For example, the transport speed of the organic waste (Y) by the transport means (20) and the heating temperature by the combustion exhaust gas (N) are not limited to the values and ranges shown in this embodiment, but the organic waste It is variously set according to the type of (Y), the length of the heating pipe part (13) of the pipe (12) of the pipe conveyor (11), and the like.

  The incinerator according to the present invention can be used as an incinerator equipped with a heating device that heat-treats various organic wastes such as sludge (eg, organic sludge), cut grass, livestock manure, and the like.

It is a partially cutaway front view of the incinerator concerning one embodiment of this invention. It is a top view of the incinerator. It is a left view of the incinerator. It is a partially cutaway perspective view of the pipe conveyor of the incinerator. FIG. 2 is a sectional view taken along the line ZZ in FIG. It is a schematic block diagram of the incinerator.

Explanation of symbols

1: Incinerator 2: Incinerator body 3: Incinerator 6: Aeration pipe 8: Gas suction device
8a: Gas suction tube
8b: Gas discharge pipe
8A: Gas suction fan
8B: Vacuum pump
10: Heating device
11: Pipe conveyor
12: Pipe
15: Drive unit
16: Organic waste input
17: Organic waste outlet
19: Hot air flow passage
20: Endless conveying means
25: Air inlet
32: Discharge port opening / closing device
33: Cyclone separator (solid-gas separator)
35: Condenser (gas-liquid separator)
F: Flame K: Combustion air N: Combustion exhaust gas B: External air G: Gas (dry exhaust gas or dry distillation exhaust gas)
H: Incinerated material Y: Organic waste

Claims (7)

In an incinerator having an incineration chamber for incineration of incinerated materials,
An annular waste pipe is provided with an inlet and outlet for organic waste, and an endless transporting means for transporting the organic waste is provided in the pipe conveyor, and hot air passes through the pipe conveyor. An organic waste heating device having a hot air flow passage,
In the pipe conveyor, at least a part of the portion from the position of the pipe inlet to the position of the outlet in the transport direction of the organic waste by the transport means is disposed in the hot air flow passage,
The heating device is configured to heat the organic waste charged into the pipe from the charging port from the outside of the pipe by the heat of hot air passing through the hot air flow passage, and the position of the discharge port by the conveying unit. It is supposed to be transported to
As the hot air, flue gas generated by the combustion of the incinerator in the incineration chamber is supplied to the hot air flow passage of the heating device,
The gas generated by heating the organic waste in the pipe is sucked by a gas suction device, and the gas sucked by the gas suction device is supplied to the incineration chamber. An incinerator. The heating device is for heating and drying organic waste,
While the gas suction pipe of the gas suction device is connected to the outlet of the pipe,
Air that attracts and sucks external air into the pipe by suction of the gas by the gas suction device at a position from the position of the inlet of the pipe to the position of the outlet in the transport direction of the organic waste by the transport means The incinerator according to claim 1, wherein a suction port is provided. The heating device is for heating and carbonizing organic waste,
A vacuum pump is used as the gas suction device,
2. The interior of the pipe is brought into an oxygen-deficient state by sucking the gas in the pipe with the gas suction device in a state in which the flow of external air into the pipe is blocked. Incinerator. While the gas suction pipe of the gas suction device is connected to the outlet of the pipe,
The gas suction pipe of the gas suction device has a solid-gas separation device for separating the gas from the heated organic waste discharged from the discharge port of the pipe, and moisture from the gas separated by the solid-gas separation device The incinerator of Claim 2 or 3 provided with the gas-liquid separation apparatus which isolate | separates. While a cyclone separator is used as the solid-gas separator,
The incinerator according to claim 4, wherein a discharge opening / closing device for opening / closing the discharge opening is provided at a heated organic waste discharge opening of the cyclone separator.   The incinerator according to claim 4 or 5, wherein a condenser is used as the gas-liquid separator.   The incinerator of any one of Claims 1-6 in which the whole site | part arrange | positioned in the said hot air flow channel | path of the said pipe is formed in planar view substantially U shape.

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