JP2011236313A - Apparatus and method for treating waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technology for treating wastes that prevents deterioration of carbides and smoothly conveys the carbides.SOLUTION: An exhaust pipe 80 is provided between the longitudinal midpoint 88 of a furnace body 31 and an upstream inner wall surface 76 of a heating medium jacket 35. Dry distillation gas and water vapor generated during carbonization of the wastes are promptly discharged out of the furnace body 31 from the exhaust pipe 80 compared to the case where the exhaust pipe is provided at the longitudinal end point of the furnace body 31. The possibility of malodor release from the carbides removed from the furnace body 31 is decreased because a malodor component of the dry distillation gas cannot easily deposit onto the carbides when the dry distillation gas is promptly discharged. Also, moisture cannot be easily generated downstream of a drawing pipe 33 because the dry distillation gas and water vapor are promptly discharged. Therefore, the carbides are smoothly conveyed because the fixing of the carbides in the piping etc. downstream of the drawing pipe 33 due to the moisture cannot easily occur.

Description

  The present invention relates to a waste treatment technique for obtaining a carbide by steaming and carbonizing a waste containing an organic substance.

  In car body painting factories, spray painting is used when applying paint to the car body. In spray painting, not all of the paint is applied to the car body, and some of it falls after floating in the air. The paint that is thrown away without being applied to the vehicle body is called a paint bottle. Since the paint cake is usually collected using high-pressure water and stored in the pit, it is handled as waste containing organic matter. Incineration is one of the treatment technologies for waste containing organic matter. Since incineration directly burns waste, carbon dioxide and dioxins are emitted. Therefore, the environmental load increases. From the viewpoint of environmental protection, it is preferable to recycle waste containing organic matter.

  Conventionally, various waste treatment techniques have been proposed as techniques for recycling waste containing organic substances (see, for example, Patent Document 1 (FIG. 1)).

Patent document 1 is demonstrated based on the following figure.
FIG. 5 is a diagram for explaining a basic configuration of a conventional technique. A waste treatment apparatus 200 includes a waste storage tank 201 that is disposed upstream of the apparatus and stores waste containing organic substances, and the waste storage apparatus. There is a waste transporter 202 that transports the waste introduced from the tank 201 and a carbonization furnace 203 that is disposed downstream of the waste transporter 202 and carbonizes the waste to obtain a carbide.

  The carbonization furnace 203 introduces the waste supplied from the end opening 204 of the waste transporter 202 into the interior, and a furnace body 205 which is a rotating side member, and a stationary side member provided so as to surround the furnace body 205. And a heating unit 206. A plurality of feed blades 207 are provided on the inner peripheral surface of the furnace body 205 to send waste to the downstream side when the furnace body 205 is rotated, and the gas generated in the furnace body 205 is supplied to the side wall of the furnace body 205. A plurality of exhaust holes 208 for discharging are provided. Further, a carbide take-out pipe 209 for taking out carbide from the furnace body 205 is provided on the downstream side of the furnace body 205, and a valve 211 is disposed below the carbide take-out pipe 209. In addition, the heating unit 206 is provided with a plurality of burners 212. In addition, a gas exhaust pipe 213 is provided in the upper part on the downstream side of the heating unit 206, and a combustion deodorization device 214 is connected to the gas exhaust pipe 213.

  When waste is introduced into the furnace body 205 in a state where the furnace body 205 is rotated and the burner 212 is ignited, the waste is sent to the apparatus downstream side by the feed blade 207. At the same time as the waste is sent to the downstream side of the apparatus, the heat generated by the flame of the burner 212 is transferred to the waste through the furnace body 205, so that the waste is heated at 600 ° C in a state where contact with air is cut off. Is done. After heating, carbide and dry distillation gas are generated in the furnace body 205. In addition, since the waste containing organic matter contains moisture like the above-described paint bottle, water vapor is generated in the furnace body 205.

  The carbide is introduced into the carbide storage tank 215 through the carbide take-out pipe 209 and the valve 211. The dry distillation gas flows into the combustion deodorization device 214 through the exhaust hole 208 and the gas exhaust pipe 213 of the furnace body 205 by the operation of the exhaust fan 216. The dry distillation gas is rendered harmless by the combustion deodorizer 214 and exhausted through the exhaust fan 216. Since the carbide obtained by the waste treatment apparatus 200 is used as a material for the vibration damping material, the waste containing the organic matter can be recycled.

  By the way, in the waste treatment apparatus 200, since the gas discharge pipe 213 is provided on the downstream side of the apparatus, dry distillation gas and water vapor generated in the furnace body 205 may flow to the vicinity of the carbide take-out pipe 209. When the carbonized gas or water vapor is present in the vicinity of the carbide take-out pipe 209, if the carbide is taken out from the furnace body 205, the carbonized gas or water vapor easily adheres to the carbide. When such a carbide is stored in the carbide storage tank 215, the malodorous component contained in the dry distillation gas adheres to the carbide, resulting in a decrease in the quality of the carbide. Further, the carbonized gas and water vapor adhering to the carbide move from the furnace body 205 at 600 ° C. to the carbide storage tank 215 at room temperature, so that dew condensation occurs due to the temperature difference between the furnace body 205 and the carbide storage tank 215 and moisture. It becomes. Since this moisture causes the carbide to be fixed in the carbide storage tank 215, the transportation of the carbide is hindered.

  Accordingly, there is a need for a waste treatment technique that prevents the quality of carbides from being deteriorated and that can smoothly convey carbides.

Japanese Patent Laid-Open No. 9-047795

  It is an object of the present invention to provide a waste treatment technique that can prevent the quality of carbides from being deteriorated and that can smoothly convey the carbides.

  The invention according to claim 1 is a furnace body for storing waste containing organic matter by extending horizontally or obliquely, and a waste inlet for introducing the waste into the furnace body provided at one end of the furnace body. A transport mechanism provided in the furnace body for transporting the waste from one end of the furnace body to the other end, and a heating means provided in the furnace body for steaming and carbonizing the waste transported by the transport mechanism. And provided at the other end of the furnace body so as to cover an outer peripheral surface of the furnace body between a carbide outlet for taking out carbide from the furnace body, and between the waste inlet and the carbide outlet. In a waste treatment apparatus comprising a heating medium jacket for introducing a heating medium to heat a peripheral wall of the furnace body, a gas discharge port for discharging the gas generated in the furnace body to the outside of the furnace is provided in the furnace body. The gas outlet is the length of the furnace body. Characterized in that provided between the waste inlet side inner wall surface of the heating medium jacket direction midpoint.

  According to a second aspect of the present invention, waste containing organic matter is introduced into a waste inlet provided at one end of the furnace body, and the waste is transferred to the furnace body by a transport mechanism provided in the furnace body. Carried to the other end, the waste being conveyed was steamed and carbonized by heating means provided in the furnace body, and the carbide obtained by carbonization was provided at the other end of the furnace body. Gas generated in the furnace body in the method of treating waste, which is taken out from the carbide outlet and heated by a heat medium in a heat medium jacket provided so as to cover the outer peripheral surface of the furnace body on the peripheral wall of the furnace body Is discharged from a gas outlet provided between the longitudinal intermediate point of the furnace body and the waste inlet side inner wall surface of the heating medium jacket.

  In the invention according to claim 1, the gas discharge port discharges the gas generated in the furnace body to the outside of the furnace, and between the longitudinal middle point of the furnace body and the waste inlet side inner wall surface of the heating medium jacket. Is provided. Since the gas discharge port is provided between the longitudinal intermediate point of the furnace body and the inner wall surface on the waste medium inlet side of the heating medium jacket, it is discarded compared to the case where the gas discharge port is provided at the longitudinal end point of the furnace body. The dry distillation gas and water vapor generated when the product is carbonized can be quickly discharged out of the furnace. When the dry distillation gas is quickly discharged, the malodorous component of the dry distillation gas is less likely to adhere to the carbide, so that the possibility that the carbide taken out from the furnace emits a bad smell is reduced. Accordingly, it is possible to prevent the quality of the carbide from being lowered.

  In addition, by providing a gas discharge port between the longitudinal middle point of the furnace body and the inner wall surface of the heat medium jacket on the waste input side, dry distillation gas and water vapor generated when carbonizing the waste However, it is less likely to flow toward the carbide outlet. If dry distillation gas and water vapor flow toward the carbide outlet, the carbonized gas and water vapor adhere to the carbide when the carbide is taken out from the furnace. When the carbonized carbon adhering to the dry distillation gas or water vapor flows from the high temperature furnace to the downstream side of the low temperature carbide outlet, the temperature difference between the furnace body and the downstream side of the carbide outlet leads to the downstream side of the carbide outlet. Condensation of dry distillation gas and water vapor occurs in nearby piping. Similarly, when carbonized carbon or carbonized carbide flows to the carbide storage tank located downstream of the carbide outlet, the carbonization gas and the carbonization gas in the carbide storage tank due to the temperature difference between the furnace body and the carbide storage tank. Water vapor condenses. If such dew condensation occurs, moisture is generated in the pipe and the carbide storage tank, so that the carbide is easily fixed in the pipe and the carbide storage tank.

  In that respect, in the present invention, since the carbonization gas and water vapor can be quickly discharged from the gas discharge port provided between the longitudinal intermediate point of the furnace body and the waste inlet side inner wall surface of the heating medium jacket, And no moisture is generated in the carbide storage tank. Therefore, it becomes difficult for the carbide to adhere to the pipe or the carbide storage tank, and the carbide can be smoothly conveyed. ADVANTAGE OF THE INVENTION According to this invention, the waste processing apparatus which can prevent the quality fall of a carbide | carbonized_material and can convey a carbide | carbonized_material smoothly can be provided.

  In the invention according to claim 2, the gas generated in the furnace body is discharged from a gas discharge port provided between the longitudinal intermediate point of the furnace body and the waste inlet side inner wall surface of the heat medium jacket. I made it. Since the gas generated in the furnace body is discharged from the gas outlet provided between the longitudinal intermediate point of the furnace body and the waste inlet side wall surface of the heat medium jacket, it is provided at the longitudinal end point of the furnace body. Compared with the case where gas is discharged from the gas discharge port, dry distillation gas and water vapor generated when carbonizing the waste can be quickly discharged out of the furnace. When the dry distillation gas is quickly discharged, the malodorous component of the dry distillation gas is less likely to adhere to the carbide, so that the possibility that the carbide taken out from the furnace emits a bad smell is reduced. Accordingly, it is possible to prevent the quality of the carbide from being lowered.

  In addition, the waste generated is carbonized by discharging the gas generated in the furnace body from the gas outlet provided between the longitudinal intermediate point of the furnace body and the waste inlet side inner wall surface of the heating medium jacket. The carbonization gas and water vapor generated during the process are less likely to flow toward the carbide outlet. If dry distillation gas and water vapor flow toward the carbide outlet, the carbonized gas and water vapor adhere to the carbide when the carbide is taken out from the furnace. When the carbonized carbon adhering to the dry distillation gas or water vapor flows from the high temperature furnace to the downstream side of the low temperature carbide outlet, the temperature difference between the furnace body and the downstream side of the carbide outlet leads to the downstream side of the carbide outlet. Condensation of dry distillation gas and water vapor occurs in nearby piping. Similarly, when carbonized carbon or steam adhering to the charcoal flows into the charcoal storage tank located downstream of the carbide outlet, the carbonization gas and the carbonization gas in the charcoal storage tank are caused by the temperature difference between the furnace body and the charcoal storage tank. Water vapor condenses. If such dew condensation occurs, moisture is generated in the pipe and the carbide storage tank, so that the carbide is easily fixed in the pipe and the carbide storage tank.

  In that respect, in the present invention, since the carbonization gas and water vapor can be quickly discharged from the gas discharge port provided between the longitudinal intermediate point of the furnace body and the waste inlet side inner wall surface of the heating medium jacket, And no moisture is generated in the carbide storage tank. Therefore, it becomes difficult for the carbide to adhere to the pipe or the carbide storage tank, and the carbide can be smoothly conveyed. ADVANTAGE OF THE INVENTION According to this invention, the waste processing method which prevents the quality fall of a carbide | carbonized_material and can convey a carbide | carbonized_material smoothly can be provided.

It is a figure explaining the structure of a waste treatment facility. It is a figure explaining the structure of the processing apparatus of the waste which concerns on this invention. It is a figure explaining the optimal position of a gas exhaust port. It is a figure explaining the structure of the processing apparatus of another waste which concerns on this invention. It is a figure explaining the basic composition of the conventional technology.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a waste treatment facility 10 is input from a waste storage tank 11 that stores waste (details will be described later) disposed on the upstream side of the facility and contains organic substances, and the waste storage tank 11. A waste drying device 20 (details will be described later) for introducing waste into the interior and drying the waste, and introducing the waste taken out from the waste drying device 20 into the interior to carbonize the waste to obtain a carbide. It has a waste carbonization device 30 (details will be described later) and a carbide storage tank 61 for storing the carbide taken out from the waste carbonization device 30.

  In the embodiment, waste containing organic matter is waste generated in a car body painting factory of an automobile. There are three types of waste generated in automobile body painting factories: wastewater sludge discharged by washing after the degreasing treatment process, chemical sludge discharged in the film forming process, and paint waste discharged in the film forming process. These wastewater sludge, chemical sludge, and paint slag are wastes containing moisture. In addition, wastewater sludge, chemical sludge, and paint slag are mixed by a mixer disposed upstream of the waste storage tank 11 and then introduced into the waste storage tank 11 through the waste pipe 12 as waste. Is done.

  The waste drying apparatus 20 includes a drying furnace body 21 that extends horizontally and stores waste, and a dry waste that is provided at the upstream end of the drying furnace body 21 and inputs waste into the drying furnace body 21. Input pipe 22, dry side waste take-out pipe 23 provided at the downstream end of dry furnace body 21 to take out waste from inside dry furnace body 21, dry side waste input pipe 22 and dry side waste take-out pipe A drying-side heat medium jacket 24 (detailed later) for introducing high-temperature exhaust gas (detailed later) to heat the peripheral wall of the drying furnace body 21 provided so as to cover the outer peripheral surface of the drying furnace body 21. And a water vapor take-out pipe 25 that is provided at the upstream end of the drying furnace body 21 and takes out water vapor (described later in detail). Waste is transported from the upstream side of the apparatus to the downstream side by a drying side transport mechanism provided in the drying furnace body 21. Further, the heat of the high-temperature exhaust gas is transmitted to the waste through the peripheral wall of the drying furnace body 21 during the conveyance, so that the waste is dried.

  The waste carbonization apparatus 30 includes a carbonization furnace body 31 that extends horizontally and stores waste, and a carbonization-side waste that is provided at an upstream end of the carbonization furnace body 31 and inputs waste into the carbonization furnace body 31. A heating pipe 32, a carbide take-off pipe 33 provided at the downstream end of the carbonization furnace body 31 for taking out carbide from the carbonization furnace body 31, and a superheater provided in the carbonization furnace body 31 for steaming and carbonizing the waste. Carbonized to cover the outer peripheral surface of the carbonization furnace body 31 between a superheated steam introduction pipe 34 (details will be described later) for introducing steam (details will be described later) and the carbonization-side waste input pipe 32 and the carbide take-out pipe 33. It is comprised with the carbonization side heat-medium jacket 35 (detailed later) which introduces high temperature exhaust gas (detailed later) in order to heat the surrounding wall of the furnace body 31. Waste is transported from the upstream side of the apparatus to the downstream side by a carbonization side transport mechanism (described later in detail) provided in the carbonization furnace body 31, and carbonization of the waste is performed during transport. The carbide take-out pipe 33 is connected to a carbide take-out adjusting unit 40 (details will be described later) for adjusting the take-out of the carbide. The high temperature exhaust gas is a gas at 600 ° C.

  In addition, the waste treatment facility 10 includes a boiler 62 that burns fuel such as liquefied natural gas to generate steam, and a superheater 63 that further superheats steam to generate superheated steam. The superheated steam generated by the superheater 63 is supplied into the carbonization furnace body 31 through the superheated steam pipe 67.

  The carbonization furnace body 31 is provided with a gas exhaust pipe 80 (details will be described later), and a dry distillation gas exhaust blower 75 is connected to the gas exhaust pipe 80 via an exhaust gas pipe 81. By operating the dry distillation gas discharge blower 75, dry distillation gas and water vapor generated during carbonization of the waste are sucked into the dry distillation gas discharge blower 75 from the carbonization furnace body 31. Further, the dry distillation gas discharge blower 75 sends the sucked dry distillation gas to the superheater 63. When the dry distillation gas is thermally decomposed by the superheater 63, high-temperature exhaust gas is generated. By introducing this high-temperature exhaust gas into the drying-side heat medium jacket 24 and the carbonization-side heat medium jacket 35, the heat of the high-temperature exhaust gas can be used effectively.

  The high-temperature exhaust gas that has flowed into the drying-side heat medium jacket 24 transfers heat to the waste through the peripheral wall of the drying furnace body 21. The waste thrown into the drying furnace body 21 contains a large amount of moisture, but when it is taken out from the dry-side waste take-out pipe 23 by the heat of the high-temperature exhaust gas, the moisture content is reduced to about 35%. Further, water vapor is taken out from the water vapor take-out pipe 25 of the drying furnace body 21. That is, waste having a moisture content of about 35% is put into the waste carbonization apparatus 30. Next, the detailed structure of the waste carbonization apparatus 30 will be described with reference to FIG.

  As shown in FIG. 2, the carbonization furnace body 31 of the waste carbonization apparatus 30 includes a cylindrical portion 82 that is a longitudinal member, an upstream lid 84 that is attached to an upstream end 83 of the cylindrical portion 82, and a cylinder And a downstream lid 86 attached to the downstream end 85 of the portion 82. In addition, although the carbonization furnace body 31 extended horizontally in the Example, you may extend and install diagonally.

  The carbonized waste input pipe 32 is attached to the upstream end 83 of the cylinder part 82, and the carbide take-out pipe 33 is attached to the downstream end 85 of the cylinder part 82. Further, the superheated steam introduction pipe 34 is attached to the upstream lid 84. The heating means provided in the waste carbonization apparatus 30 is a superheated steam introduction pipe 34 that introduces superheated steam as a heat source into the carbonization furnace body 31.

  The carbonization side heat medium jacket 35 includes an upstream side heat medium ring member 53 provided on the waste input pipe 32 side of the cylinder part 82 and a downstream side heat medium provided on the carbide extraction pipe 33 side of the cylinder part 82. The ring member 54 is configured to include an upstream heat medium ring member 53 and a heat medium cylinder portion 55 that are provided so as to cover the outer peripheral surface 79 of the cylinder portion 82 and connect the downstream heat medium ring member 54. A carbonized high temperature exhaust gas introduction pipe 36 is provided at the upstream end of the heat medium cylinder 55, and a carbonization high temperature exhaust gas take-out pipe 37 is provided at the downstream end of the heat medium cylinder 55. The peripheral wall 78 of the cylindrical portion 82 is heated with the high-temperature exhaust gas introduced from the carbonization-side high-temperature exhaust gas introduction pipe 36 into the carbonization-side heat medium jacket 35. By heating the peripheral wall 78 with the high-temperature exhaust gas, when superheated steam is introduced into the carbonization furnace body 31, the inside of the carbonization furnace body 31 can be kept at a high temperature.

  A straight line 87 that intersects in the axial direction of the cylinder part is drawn at an intermediate position in the longitudinal direction of the cylindrical part 82, and a longitudinal intermediate point 88 is drawn on the straight line 87. Further, the inner wall surface of the upstream heat medium ring member 53 is used as the upstream inner wall surface 76 of the carbonization-side heat medium jacket 35, and a straight line 89 is drawn along the upstream inner wall surface 76, and a point 91 is drawn on the straight line 89. . At this time, the gas discharge pipe 80 is disposed between the longitudinal intermediate point 88 and the point 91. That is, the gas discharge pipe 80 is provided between the longitudinal intermediate point 88 of the cylindrical portion 82 and the upstream inner wall surface 76 of the carbonization side heat medium jacket 35. From this gas discharge pipe 80, dry distillation gas and water vapor generated in the carbonization furnace body 31 are discharged out of the carbonization furnace body 31.

  The carbonization furnace body 31 is provided with a carbonization-side transport mechanism 92. The carbonization-side transport mechanism 92 is rotatably supported by an upstream bearing portion 93 provided on the upstream lid 84 and a downstream bearing portion 94 provided on the downstream lid 86, so that waste is upstream of the carbonization furnace body 31. A screw-type transport unit 95 that feeds from the head to the downstream end, and an electric motor 98 that is connected to a shaft 96 of the transport unit 95 and that rotates the transport unit 95 and whose operation is controlled by the control unit 97. In addition, although the screw form was applied to the model of the conveyance part 95 in the Example, you may apply a paddle form or a ribbon form.

  Further, the upstream lid 84 is provided with an upstream sealing portion 99 that seals the shaft penetrating portion of the transport portion 95, and the downstream lid 86 is provided with a downstream sealing portion 101 that seals the shaft penetrating portion of the transport portion 95. It has been. In the carbonization furnace 31, the cylindrical portion 82 is closed by the upstream lid 84 and the downstream lid 86, and the shaft penetrating portions of the upstream lid 84 and the downstream lid 86 are the upstream sealing portion 99 and the downstream sealing portion. Since it is sealed with 101, the airtightness of the carbonization furnace body 31 can be ensured. That is, air can be prevented from entering the carbonization furnace body 31 from the outside.

  The carbide take-out adjusting unit 40 is connected to the carbide take-out pipe 33 and temporarily stores the carbide, and the first take-out container 41 is connected to the first take-out container 41 and the first actuator 42 is used to open and close the first valve body 43. A second take-out valve 44, a second take-out container 45 connected to the first take-out valve 44 for temporarily storing carbide, and a second actuator 46 connected to the second take-out container 45 to open and close the second valve body 47. And a take-out valve 48. By controlling the opening and closing of the first actuator 42 and the second actuator 46 by the control unit 97, the amount of carbide supplied to the carbide reservoir (reference numeral 61 in FIG. 1) can be adjusted.

  In addition, a cooling jacket 49 is provided so as to surround the second extraction container 45, and a cooling water supply pipe 51 and a cooling water extraction pipe 52 are connected to the cooling jacket 49. By supplying cooling water into the cooling jacket 49 and cooling the carbide with the cooling water, it becomes difficult for the carbide to be softened, and the shape of the carbide can be prevented from being lost. Since the carbide is shipped as a material for the vibration isolator, the quality of the carbide is improved by preventing the loss of shape.

  When the electric motor 98 is started and the transport section 95 rotates and superheated steam is supplied from the superheated steam introduction pipe 34, waste is thrown into the cylindrical portion 82 from the carbonization-side waste input pipe 32. Is conveyed from the upstream end of the carbonization furnace body 31 toward the downstream end. During the transportation, the waste is stirred by the screw-shaped transport unit 95 and is in contact with the superheated steam, so that the waste can be steamed and carbonized. By carbonizing the waste, a carbide is obtained. Note that the water contained in the waste is evaporated by the superheated steam. In addition, the dry distillation gas generated when the waste is carbonized is discharged from the gas discharge pipe 80 and supplied to the superheater (reference numeral 63 in FIG. 1). Next, the amount of evaporated water and the amount of dry distillation gas generated in the carbonization furnace body 31 when the waste is carbonized will be described with reference to FIG.

FIG. 3A is a graph showing the correlation between the amount of evaporated water generated in the carbonization furnace body (reference numeral 31 in FIG. 2) and the carbonization time of waste, and the horizontal axis represents the carbonization time, and the vertical axis represents the evaporated water amount. Show. The present inventors conducted tests under the following conditions.
A-1, Amount of waste input to the waste carbonizer: 400kg / hour
A-2, Waste water content: 35%
A-3, furnace temperature: 450 ° C
A-4, Carbonization time of waste: 30 minutes

  The peak T1 at which evaporated moisture is generated was between 8 minutes and 12 minutes after the waste was charged when the carbonization time of the waste was 30 minutes. Next, the correlation between the amount of dry distillation gas and the carbonization time of waste will be described.

FIG. 3B is a graph showing the correlation between the amount of dry distillation gas generated in the carbonization furnace body (reference numeral 31 in FIG. 2) and the carbonization time of waste, and the horizontal axis represents the carbonization time, and the vertical axis represents the dry distillation gas amount. Show. The present inventors conducted tests under the following conditions.
B-1, Amount of waste input to the waste carbonizer: 400kg / hour
B-2, Waste water content: 35%
B-3, furnace temperature: 450 ° C
B-4, Carbonization time of waste: 30 minutes

  The peak T2 at which dry distillation gas is generated was between 12 minutes and 15 minutes after the waste was charged when the carbonization time of the waste was 30 minutes. Next, the relationship between the amount of evaporated water and the amount of dry distillation gas and the gas outlet will be described.

  FIG. 3C is a diagram schematically showing the waste carbonization apparatus 30. The above-mentioned waste carbonization time of 30 minutes corresponds to the length from the upstream inner wall surface 76 to the downstream inner wall surface 77 of the carbonization side heat medium jacket 35, and the upstream inner wall surface 76 corresponding to time 0 minutes. Is set to 0%, and the downstream inner wall surface 77 corresponding to 30 minutes is set to 100%.

  The starting point of the peak T1 of the evaporated water amount is 8 minutes after the introduction of the waste, and is 25% from the upstream inner wall surface 76 of the carbonization side heat medium jacket 35. In addition, the end point of the peak T2 of the dry distillation gas amount is 15 minutes after the introduction of the waste, and is 50% from the upstream inner wall surface 76 of the carbonization side heat medium jacket 35. By disposing the gas discharge pipe 80 at a position of 25% to 50% from the upstream inner wall surface 76 of the carbonization side heat medium jacket 35, water vapor and dry distillation gas can be discharged smoothly to the outside of the carbonization furnace body 31. Can do. That is, when the length from the upstream inner wall surface 76 to the downstream inner wall surface 77 of the carbonization side heat medium jacket 35 is 100%, the position of 25% to 50% from the upstream inner wall surface 76 is the position of the gas exhaust pipe 80. It becomes the optimal installation site.

  In addition, in the Example, although the gas exhaust pipe 80 was arrange | positioned in the position of 30% from the upstream inner wall surface 76 of the carbonization side heat medium jacket 35, if it is a position of 25%-50% from the upstream inner wall surface 76, it is. The position of the gas outlet can be arbitrarily determined.

  Since the gas discharge pipe 80 is provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization-side heat medium jacket 35, the gas discharge pipe 80 is at the longitudinal end point of the carbonization furnace body 31. Compared with the case where it is provided, the dry distillation gas and water vapor generated when the waste is carbonized can be quickly discharged out of the carbonization furnace body 31. When the dry distillation gas is quickly discharged, the malodorous component of the dry distillation gas is less likely to adhere to the carbide, so that the possibility that the carbide taken out from the carbonization furnace body 31 emits a bad odor is reduced. Accordingly, it is possible to prevent the quality of the carbide from being lowered.

  In addition, since the gas discharge pipe 80 is provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization-side heat medium jacket 35, the gas discharge pipe 80 is generated when the waste is carbonized. The dry distillation gas and water vapor are less likely to flow toward the carbide take-out pipe 33. If dry distillation gas or water vapor flows toward the carbide take-out pipe 33, when the carbide is taken out from the carbonization furnace body 31, the dry distillation gas or water vapor adheres to the carbide. When the carbide adhering to the dry distillation gas or water vapor flows from the inside of the high temperature carbonization furnace body 31 to the downstream side of the low temperature carbide extraction pipe 33, the temperature difference between the inside of the carbonization furnace body 31 and the downstream side of the carbide extraction pipe 33 is low. As a result, dry distillation gas and water vapor are condensed in the pipe near the downstream side of the carbide take-out pipe 33. Similarly, when the carbide to which dry distillation gas or water vapor is attached flows to a carbide storage tank (reference numeral 61 in FIG. 1) disposed on the downstream side of the carbide take-out pipe 33, the temperature in the carbonization furnace 31 and the carbide storage tank. Due to the difference, dry distillation gas and water vapor may condense in the carbide storage tank. If such dew condensation occurs, moisture is generated in the pipe and the carbide storage tank, so that the carbide is easily fixed in the pipe and the carbide storage tank.

  In this regard, in the present invention, dry distillation gas and water vapor can be quickly discharged from the gas discharge pipe 80 provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization side heat medium jacket 35. Therefore, moisture is not generated in the piping or the carbide storage tank. Therefore, it becomes difficult for the carbide to adhere to the pipe or the carbide storage tank, and the carbide can be smoothly conveyed. According to the present invention, it is possible to provide a waste carbonization apparatus 30 that can prevent deterioration of the quality of carbides and can smoothly convey the carbides.

A waste carbonization method using the waste carbonization apparatus 30 described above will be described next.
In FIG. 2, the waste treatment method is such that a waste containing organic matter is put into a carbonization-side waste input pipe 32 provided at an upstream end of the cylindrical portion 82, and the waste is put into a carbonization furnace body 31. Is transported toward the downstream end of the carbonization furnace body 31 by the carbonization-side transport mechanism 92 provided in the superheated steam supplied from the superheated steam introduction pipe 34 to the upstream lid 84. Steamed and carbonized, and the carbide obtained by carbonization is taken out from the carbide take-out pipe 33 provided at the downstream end of the cylindrical portion 82, and the gas generated in the carbonization furnace body 31 is converted into the carbonization furnace body 31. The exhaust gas is discharged from a gas discharge pipe 80 provided between the intermediate point 88 in the longitudinal direction and the upstream inner wall surface 76 of the carbonization side heat medium jacket 35.

  Since the gas generated in the carbonization furnace body 31 is discharged from the gas discharge pipe 80 provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization-side heat medium jacket 35, the carbonization furnace Compared with the case where gas is discharged from the gas discharge port provided at the end point in the longitudinal direction of the body 31, the dry distillation gas and water vapor generated when carbonizing the waste can be quickly discharged out of the furnace. When the dry distillation gas is quickly discharged, the malodorous component of the dry distillation gas is less likely to adhere to the carbide, so that the possibility that the carbide taken out from the carbonization furnace body 31 emits a bad odor is reduced. Accordingly, it is possible to prevent the quality of the carbide from being deteriorated.

  In addition, the gas generated in the carbonization furnace body 31 is discharged from a gas discharge pipe 80 provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization-side heat medium jacket 35. Thus, dry distillation gas and water vapor generated when carbonizing the waste are less likely to flow toward the carbide extraction pipe 33. If dry distillation gas or water vapor flows into the carbide take-out pipe 33, when the carbide is taken out from the carbonization furnace body 31, the dry distillation gas or water vapor adheres to the carbide. When the carbide adhering to the dry distillation gas or water vapor flows from the inside of the high temperature carbonization furnace body 31 to the downstream side of the low temperature carbide extraction pipe 33, the temperature difference between the inside of the carbonization furnace body 31 and the downstream side of the carbide extraction pipe 33 is low. As a result, dry distillation gas and water vapor are condensed in the pipe near the downstream side of the carbide take-out pipe 33. Similarly, when the carbide to which the dry distillation gas or water vapor is attached flows to the carbide storage tank (reference numeral 61 in FIG. 1) disposed on the downstream side of the carbide extraction pipe 33, due to the temperature difference between the furnace body and the carbide storage tank, Carbonized gas and water vapor are condensed in the carbide storage tank. If such dew condensation occurs, moisture is generated in the pipe and the carbide storage tank, so that the carbide is easily fixed in the pipe and the carbide storage tank.

  In this regard, in the present invention, dry distillation gas and water vapor can be quickly discharged from the gas discharge pipe 80 provided between the longitudinal intermediate point 88 of the carbonization furnace body 31 and the upstream inner wall surface 76 of the carbonization side heat medium jacket 35. Therefore, moisture is not generated in the piping or the carbide storage tank. Therefore, it becomes difficult for the carbide to adhere to the pipe or the carbide storage tank, and the carbide can be smoothly conveyed. ADVANTAGE OF THE INVENTION According to this invention, the waste processing method which prevents the quality fall of a carbide | carbonized_material and can convey a carbide | carbonized_material smoothly can be provided.

  In the waste carbonization apparatus 30 described so far, the carbonization furnace body 31 is a stationary side member, and the transport unit 95 provided in the carbonization furnace body 31 is a rotation side member. As another form of the waste carbonization apparatus, there is a form in which the carbonization furnace body becomes a rotation side member. Next, a waste carbonization apparatus in which the carbonization furnace body rotates will be described with reference to FIG.

  As shown in FIG. 4, the waste carbonization apparatus 110 is provided so as to cover an intermediate carbonization furnace body 111 (described later in detail) that extends obliquely and stores waste, and an upstream end of the intermediate carbonization furnace body 111. The upstream carbonization furnace body 112 (described later in detail) and the downstream carbonization furnace body 113 (described later in detail) provided so as to cover the downstream end of the intermediate carbonization furnace body 111. That is, if the waste carbonization apparatus 110 is a single carbonization furnace body, the carbonization furnace body is divided into three parts. Therefore, the upstream carbonization furnace body 112 is disposed at the upstream end of the carbonization furnace body, and the downstream of the furnace body. A downstream carbonization furnace body 113 is disposed at the side end.

  The intermediate carbonization furnace body 111 is supported by an intermediate carbonization furnace body drive unit 115 provided on the upstream installation surface 123 and a downstream roller 118 provided rotatably on the downstream installation surface 117. The intermediate carbonization furnace body drive unit 115 includes an electric motor 124 provided on the installation surface 123, a drive gear 125 rotatably provided on the installation surface 123 and connected to the output shaft of the electric motor 124, and the intermediate carbonization furnace body 111. The driven gear 126 is attached to the outer peripheral surface 119 and meshes with the drive gear 125. When the electric motor 124 is started, the drive gear 125 rotates, and the torque of the drive gear 125 is transmitted to the driven gear 126, so that the intermediate carbonization furnace body 111 rotates. That is, the drive gear 125 transmits torque to the driven gear 126 and supports the upstream side of the intermediate carbonization furnace body 111.

  A plurality of blades 128, 129, 131, 132, 133 extending in the longitudinal direction of the intermediate carbonization furnace body 111 are provided on the inner peripheral surface 127 of the intermediate carbonization furnace body 111. When waste is put into the intermediate carbonization furnace body 111 while the intermediate carbonization furnace body 111 is rotated, the waste is stirred by a plurality of blades 128, 129, 131, 132, and 133.

  In the embodiment, the blades 128, 129, 131, 132, and 133 are extended in the longitudinal direction, but the blades are inclined with respect to the axial direction, and the blades are directed to the downstream side so that the blades are on the inner peripheral surface. You may attach to. The number of blades and the mounting interval may be arbitrarily determined in consideration of operating conditions.

  The upstream-side carbonization furnace body 112 has a substantially J-shape extending to the vicinity of an intermediate portion of the carbonization furnace body provided on the charging-side casing 135 provided on the upstream side of the installation surface 134 and the upper plate 114 of the charging-side casing 135. Gas discharge pipe 137 (described later in detail), a carbonization-side waste input pipe 142 that is attached to the upstream side plate 136 of the input-side casing 135 and inputs waste into the carbonization furnace body, and an outer peripheral surface 119 of the intermediate carbonization furnace body 111 The charging side sealing part 144 is provided in the charging side casing 135 so as to surround the charging rotation side ring 143 attached to the upstream end of the charging side and prevents the outside air from entering when the intermediate carbonization furnace body 111 rotates.

  The downstream carbonization furnace body 113 includes a take-out side casing 145 provided on the downstream side of the installation surface 134 and a superheated steam introduction pipe 139 that is attached to the side plate 116 of the take-out side casing 145 and introduces superheated steam into the carbonization furnace body. A carbide extraction pipe 147 provided on the downstream bottom plate 146 of the extraction side casing 145 for extracting carbide from the body of the carbonization furnace, and an extraction rotation side ring 148 attached to the downstream end of the outer peripheral surface 119 of the intermediate carbonization furnace body 111. A take-out side sealing portion 149 that is formed in the take-out side casing 145 so as to surround and prevents outside air from entering when the intermediate carbonization furnace body 111 rotates is formed. The introduction side sealing portion 144 and the extraction side sealing portion 149 can prevent air from entering the inside of the carbonization furnace. Note that a carbide take-out adjusting portion (reference numeral 40 in FIG. 2) is provided on the downstream side of the carbide take-out pipe 147.

  The carbonization side transport mechanism 151 of the waste carbonization apparatus 110 includes an intermediate carbonization furnace body 111 and a plurality of blades 128, 129, 131, 132, and 133. The carbonization-side transport mechanism 151 is driven by the electric motor 124, the drive gear 125, and the driven gear 126. For transporting the waste charged into the intermediate carbonization furnace body 111, the intermediate carbonization furnace body 111 and the blades 128, 129, 131, 132, 133 are rotated and the intermediate carbonization furnace body 111 is inclined at an angle of 1 °. It is preferable to install so that it becomes. The intermediate carbonization furnace body 111 may be installed extending horizontally.

  In addition, a cylindrical carbonization side heat medium jacket 138 is provided on the outer peripheral surface 119 of the intermediate carbonization furnace body 111 via the upstream heat medium seal part 121 and the downstream heat medium seal part 122. That is, the carbonization side heat medium jacket 138 is disposed between the waste input port 154 of the carbonization side waste input pipe 142 and the carbide takeout pipe 147 and covers the outer peripheral surface 119 of the intermediate carbonization furnace body 111. Is provided. Further, a carbonization-side high-temperature exhaust gas introduction pipe 141 is provided at the upstream end of the carbonization-side heat medium jacket 138, and a carbonization-side high-temperature exhaust gas extraction pipe 155 is provided at the downstream end of the carbonization-side heat medium jacket 138. It has been.

  By introducing the high temperature exhaust gas into the inside of the carbonization side heat medium jacket 138 from the carbonization side high temperature exhaust gas introduction pipe 141, the peripheral wall 168 of the intermediate carbonization furnace body 111 can be heated by the heat of the high temperature exhaust gas. By heating the peripheral wall 168 with the high-temperature exhaust gas, when the superheated steam is introduced into the intermediate carbonization furnace body 111, the inside of the intermediate carbonization furnace body 111 can be kept at a high temperature.

  An upstream heat medium seal member 162 that can be used at a gas temperature of 600 ° C. is provided in the upstream heat medium seal portion 121, and a downstream heat medium seal that can be used at a gas temperature of 600 ° C. in the downstream heat medium seal portion 122. Since the member 163 is provided, it is possible to prevent the high-temperature exhaust gas from leaking out of the carbonization-side heat medium jacket 138 during the rotation of the intermediate carbonization furnace body 111.

  When the electric motor 124 is activated and the intermediate carbonization furnace body 111 rotates and superheated steam is supplied from the superheated steam introduction pipe 139, waste is thrown into the carbonization furnace body through the carbonization-side waste input pipe 142. A thing is conveyed toward the downstream end part from the upstream edge part of a carbonization furnace body. Since the waste is agitated by the plurality of blades 128, 129, 131, 132, and 133 and is in contact with the superheated steam during the conveyance, the waste can be steamed and carbonized. By carbonizing the waste, a carbide is obtained. Note that the dry distillation gas and water vapor generated when the waste is carbonized is discharged from the gas discharge pipe 137 and is put into a superheater (reference numeral 63 in FIG. 1).

  In addition, the gas discharge port 152 of the gas discharge pipe 137 extends along the longitudinal intermediate point 153 of the total length of the three furnace bodies 112, 111, and 113, and the upstream inner wall surface 165 of the carbonized heat medium jacket 138. It is provided between the point 167 on the drawn straight line 166.

  Since the gas discharge port 152 of the gas discharge pipe 137 is provided between the longitudinal intermediate point 153 and the upstream inner wall surface 165 of the carbonization-side heat medium jacket 138, the gas discharge port 152 faces the downstream carbonization furnace body 113 side. Compared with the case where it is provided, the dry distillation gas and water vapor generated when the waste is carbonized can be quickly discharged out of the furnace body. When the dry distillation gas is quickly discharged, the malodorous component of the dry distillation gas is difficult to adhere to the carbide, so that the possibility that the carbide taken out from the carbonization furnace emits a bad smell is reduced. Accordingly, it is possible to prevent the quality of the carbide from being lowered.

  In addition, the gas discharge port 152 of the gas discharge pipe 137 is provided between the longitudinal intermediate point 153 and the upstream inner wall surface 165 of the carbonization-side heat medium jacket 138, which is generated when the waste is carbonized. The carbonization gas or water vapor that flows is less likely to flow toward the carbide extraction pipe 147. If dry distillation gas or water vapor flows to the carbide take-out pipe 147 side, dry distillation gas or water vapor may adhere to the carbide when the carbide is taken out from the carbonization furnace. When the carbonized material to which the dry distillation gas or water vapor is attached flows from the high temperature carbonization furnace into the vicinity of the downstream side of the low temperature carbide extraction pipe 147, the carbide extraction pipe is caused by the temperature difference between the furnace body and the downstream side of the carbide extraction pipe 147. In the piping near the downstream side of 147, dry distillation gas and water vapor are condensed. Similarly, when the carbide adhering to the dry distillation gas or water vapor flows to the carbide storage tank (reference numeral 61 in FIG. 1) disposed on the downstream side of the carbide take-out pipe 147, due to the temperature difference between the carbonization furnace and the carbide storage tank. In the carbide storage tank, dry distillation gas and water vapor are condensed. If such dew condensation occurs, moisture is generated in the pipe and the carbide storage tank, so that the carbide is easily fixed in the pipe and the carbide storage tank.

  In that respect, in the present invention, dry distillation gas or water vapor is supplied from the gas discharge port 152 of the gas discharge pipe 137 provided between the longitudinal intermediate point 153 of the carbonization furnace body and the upstream inner wall surface 165 of the carbonization-side heat medium jacket 138. Can be quickly discharged, so that no moisture is generated in the piping or in the carbide storage tank. Therefore, it becomes difficult for the carbide to adhere to the pipe or the carbide storage tank, and the carbide can be smoothly conveyed. According to the present invention, it is possible to provide a waste carbonization apparatus 110 that can prevent deterioration of the quality of carbides and can smoothly convey the carbides.

Note that in the embodiment, waste containing organic matter according to the present invention is waste containing sludge, chemical sludge, and paint waste. However, waste containing oil, fat, adhesive, resin, etc. Also, waste containing sludge discharged at construction sites can be applied.
Moreover, although the high-temperature exhaust gas was applied to the heat medium introduced into the heat medium jacket according to the present invention in the embodiment, heated air, oil, water vapor, or the like may be applied.

  The waste treatment technology of the present invention is suitable for the treatment of waste generated in an automobile body painting factory.

  30, 110 ... Waste treatment apparatus (waste carbonization apparatus), 31 ... Furnace body (carbonization furnace body), 32, 142 ... Waste input port (carbonization side waste input pipe), 33,147 ... Carbide take-out port (Carbide take-out pipe), 34, 139 ... Heating means (superheated steam introduction pipe), 35, 138 ... Heat medium jacket (carbonization side heat medium jacket), 76, 165 ... Waste inlet side inner wall surface (upstream inner wall surface) , 78, 168 ... peripheral wall, 79, 119 ... outer peripheral surface, 80, 137 ... gas discharge port (gas discharge pipe), 83 ... one end (upstream side end), 85 ... other end (downstream side end), 88, 153 ... intermediate point in the longitudinal direction, 92, 151 ... transport mechanism (carbonization side transport mechanism), 111 ... furnace body (intermediate carbonization furnace body), 112 ... furnace body (upstream carbonization furnace body), 113 ... furnace body (downstream carbonization) Furnace), 136 ... one end (upstream side plate), 146 ... the other end (downstream bottom) ), 152 ... gas outlet, 154 ... waste inlet.

Claims (2)

A furnace body that extends horizontally or obliquely and stores waste containing organic matter, a waste input port that is provided at one end of the furnace body and that inputs the waste into the furnace body, and is provided in the furnace body A transport mechanism for transporting waste from one end of the furnace body to the other end; heating means provided in the furnace body for steaming and carbonizing the waste transported by the transport mechanism; and at the other end of the furnace body To heat the peripheral wall of the furnace body that is provided so as to cover the outer peripheral surface of the furnace body between the carbide outlet for removing carbide from the furnace body, and between the waste inlet and the carbide outlet. In a waste treatment apparatus comprising a heat medium jacket for introducing a heat medium into
A gas discharge port for discharging the gas generated in the furnace body to the outside of the furnace is provided in the furnace body, and the gas discharge port is disposed at a middle point in the longitudinal direction of the furnace body and a waste input port of the heating medium jacket. A waste processing apparatus, characterized in that the waste processing apparatus is provided between the side inner wall surfaces. Waste containing organic matter is put into a waste inlet provided at one end of the furnace body, and the waste is transported toward the other end of the furnace body by a transport mechanism provided in the furnace body, The waste being conveyed is steamed and carbonized by heating means provided in the furnace body, and the carbide obtained by carbonization is taken out from a carbide outlet provided at the other end of the furnace body, and the furnace In the method of treating waste, the peripheral wall of the body is heated with a heat medium in a heat medium jacket provided so as to cover the outer peripheral surface of the furnace body.
The gas generated in the furnace body is discharged from a gas discharge port provided between a longitudinal intermediate point of the furnace body and a waste inlet side inner wall surface of the heating medium jacket. Waste disposal method.

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