JP2009136764A - Heat treating system and dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat treating system capable of stably thermally decomposing when resin waste and organic waste of high moisture contents are mixed and subjected to thermal decomposition, and to provide a dryer capable of effectively drying the organic waste of high moisture contents. <P>SOLUTION: The heat treating system is provided with the dryer 30 drying the organic waste of high moisture contents 14 and a thermal decomposition apparatus 40 subjecting to thermal decomposition by housing the resin waste 12 and the organic waste of high moisture contents 14 dried in the dryer 30, and mixing and heating them. The dryer 30 possesses a front stage drying furnace 132 and a rear stage drying furnace 134 and the volume of housing the organic waste of high moisture contents 14 in the high moisture content 132 is larger than that of housing the organic waste of high moisture content 14 in the rear moisture content 134. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat treatment system and a drying apparatus. The present invention particularly relates to a heat treatment system for thermally decomposing a resin waste and a high water content organic waste and a drying apparatus for drying the high water content organic waste.

2. Description of the Related Art Conventionally, a waste treatment facility that carbonizes organic waste containing a large amount of water such as garbage, food residue, paper diaper, and organic sludge is known. In addition, an oil making apparatus is known that thermally decomposes resin waste such as waste plastic into oil. Patent Document 1 describes a method for treating organic waste that exposes organic waste to high-temperature steam to reduce the amount of water and carbonize the organic waste and collect oil from the steam. In Patent Document 2, the oil obtained by pyrolyzing and oiling waste plastic is used as a fuel for a gas turbine engine to generate power, and the waste heat from the gas turbine is used to dry and crush the garbage. A processing device is described.
JP 2001-123175 A JP 2001-334244 A

  However, in the waste treatment facility described in Patent Document 1, since organic waste having a high water content is input to the waste treatment apparatus, high-temperature steam supplied to the waste treatment apparatus is turned into waste. It is also used for evaporation of contained moisture, and the temperature in the apparatus fluctuates. As a result, the composition of the carbonized waste and the produced oil is not stable. Moreover, in the processing apparatus described in Patent Document 2, the input garbage is dried, crushed and reduced in volume. However, in order to effectively use the garbage, it is separately fermented and composted. A great deal of labor and energy was wasted.

  In order to solve the above-mentioned problems, in the first embodiment of the present invention, there is provided a heat treatment system for waste, a drying device for drying high water content organic waste, resin waste, and drying with a drying device. There is provided a heat treatment system including a pyrolysis apparatus that accommodates the high water content organic waste, and thermally decomposes the resin waste and the dried high water content organic waste by mixing and heating.

  In the above heat treatment system, the drying apparatus is connected to a pre-stage drying furnace in which high-moisture organic waste is charged and the charged high-moisture organic waste is conveyed while being heated and stirred, and is connected to the pre-drying furnace. And a post-drying furnace that transports and discharges the high water content organic waste transported from the furnace while heating and stirring, and the volume that contains the high water content organic waste in the pre-stage drying furnace is It may be larger than the volume that contains the high water content organic waste.

  In the above heat treatment system, the pre-stage drying furnace is disposed below a stirring blade that rotates around the axis and conveys the highly water-containing organic waste toward the post-stage drying furnace while stirring, and a region where the stirring blade stirs, A groove portion extending in the conveying direction of the highly water-containing organic waste, and a screw that is accommodated in the groove portion and rotates around the axis to convey the highly water-containing organic waste in the groove portion in a direction opposite to the conveying direction. Also good. The screw may be switchable between forward rotation and reverse rotation. Further, the pre-stage drying furnace and the post-stage drying furnace have a heated gas introduction pipe through which a gas for heating the pre-stage drying furnace and the post-stage drying furnace flows, and the outlet of the heated gas introduction pipe is at least one of the post-stage drying furnace and the pre-stage drying furnace May be open.

  The heat treatment system further includes a waste oil fueling device that generates a regenerated fuel by mixing the produced oil and fuel generated by the oilification by the thermal cracking device, and the thermal cracking device is a regeneration generated by the waste oil fueling device. The fuel may be burned. Moreover, the incinerator which incinerates the carbide | carbonized_material and gas which were produced | generated by the thermal decomposition apparatus may be further provided, and a drying apparatus may be heated using the waste heat produced in the incinerator. In addition, the drying apparatus may be heated using waste heat generated in the thermal decomposition apparatus.

  In the second embodiment of the present invention, a drying apparatus for drying a hydrated material, the hydrated material is charged, and connected to the previous-stage drying furnace, which transports the charged hydrated material while heating and stirring. And a post-stage drying furnace that transports and discharges the hydrated material conveyed from the former-stage drying furnace while heating and stirring, and the volume that contains the hydrated substance in the former-stage drying furnace accommodates the hydrated substance in the latter-stage drying furnace. A drying device larger than the volume to be provided is provided.

  In the drying apparatus, the first stage drying furnace is disposed below the stirring blade that rotates around the axis and conveys the hydrated material toward the subsequent drying oven while stirring the hydrated material, and the region where the stirring blade stirs. You may have the groove part extended in a conveyance direction, and the screw accommodated in a groove part, rotating around an axis | shaft, and conveying the hydrated substance in a groove part in the reverse direction of a conveyance direction. The screw may be switchable between forward rotation and reverse rotation. Further, the pre-stage drying furnace and the post-stage drying furnace have a heated gas introduction pipe through which a gas for heating the pre-stage drying furnace and the post-stage drying furnace flows, and the outlet of the heated gas introduction pipe is at least one of the post-stage drying furnace and the pre-stage drying furnace May be open.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a block diagram illustrating an outline of a heat treatment system 10 including a drying device 30 according to an embodiment. The heat treatment system 10 is a waste heat treatment system, and is thermally decomposed by mixing and heating the resin waste 12 and the highly water-containing organic waste 14.

  As shown in the figure, the heat treatment system 10 contains a drying device 30 for drying the high water content organic waste 14, the resin waste 12, and the high water content organic waste 14 dried by the drying device 30. And a thermal decomposition apparatus 40 for thermal decomposition. The heat treatment system 10 includes a waste oil fueling device 50 that generates a regenerated fuel 24 by mixing the produced oil 22 and the fuel that are generated by the pyrolysis by the pyrolysis device 40, and a regenerated fuel tank 52 that stores the regenerated fuel 24. Prepare. The heat treatment system 10 includes a carbide cooling device 54 that cools the carbide 21 generated by the pyrolysis device 40 and a carbide storage tank 56 that stores the carbide 21 cooled by the carbide cooling device 54. The heat treatment system 10 includes a boiler 60 that burns the regenerated fuel 24 to generate steam 29, and an incinerator 62 that incinerates the carbide 21 and gas generated by the thermal decomposition apparatus 40. The highly water-containing organic waste 14 is an example of a water-containing material, and examples thereof include food waste, food residues, waste materials, paper diapers, and organic sludge.

  The drying device 30 generates the reduced water waste 15 having a low water content and reduced volume by drying the charged high water organic waste 14. The drying apparatus 30 includes a drying furnace 130 into which the high water content organic waste 14 is charged, and a jacket 136 through which a gas for heating the drying furnace 130 flows. The jacket 136 is an example of a heated gas introduction pipe, and at least one of the exhaust gas 26 generated in the thermal decomposition apparatus 40 and the combustion gas 27 generated in the incineration apparatus 62 is introduced into the jacket 136 and indirectly has a high water content. The organic waste 14 is heated. The exhaust gas 26 or the combustion gas 27 that has passed through the jacket 136 flows into the drying furnace 130, directly heats the high water content organic waste 14, and then is discharged to the outside of the drying furnace 130. The exhaust gas 26 or the combustion gas 27 may be mixed with external air before being introduced into the jacket 136 or inside the jacket 136.

  Thereby, the drying furnace 130 can be heated using the waste heat generated in the thermal decomposition apparatus 40 and the waste heat generated in the incinerator 62, and the heat generated in the system can be used effectively. That is, the heat efficiency of the entire heat treatment system 10 can be improved by using the waste heat in cascade.

  The thermal decomposition apparatus 40 accommodates the resin waste 12 and the water-reduced waste 15 and thermally decomposes the resin waste 12 and the water-reduced waste 15 by mixing and heating them, so that the carbide 21 and the produced oil 22 are obtained. And the uncondensed gas 23 is produced | generated. The thermal decomposition apparatus 40 includes a thermal decomposition furnace 42 that accommodates the resin waste 12 and the reduced water waste 15, a heating unit 44 that heats the thermal decomposition furnace 42, and a dry distillation gas 20 generated by heating the thermal decomposition furnace 42. And a dry distillation gas cooling section 46 for cooling the water.

  When the resin waste 12 and the reduced water waste 15 are put into the thermal decomposition furnace 42 and heated to, for example, about 350 to 450 degrees in a low oxygen or oxygen-free state, a part of the resin waste 12 and the reduced water waste 15 is obtained. Pyrolysis gas 20 is generated by pyrolysis. In the dry distillation gas cooling unit 46, when the dry distillation gas 20 generated from the pyrolysis furnace 42 is cooled to about 25 to 50 degrees by, for example, a heat exchanger or the like, hydrocarbons having a high boiling point contained in the dry distillation gas 20 are condensed / By liquefaction, the product oil 22 is obtained. In addition, the low boiling point component in the dry distillation gas 20 is not condensed / liquefied in the dry distillation gas cooling unit 46 and is discharged from the dry distillation gas cooling unit 46 as the uncondensed gas 23.

  On the other hand, after the dry distillation gas 20 is generated, the carbide 21 remains in the pyrolysis furnace 42. Since the carbide 21 contains a lot of carbonized organic matter, energy can be recovered by burning. Further, the carbide 21 includes a metal piece included in the resin waste 12 and the high water content organic waste 14. In particular, when the resin waste 12 includes an electronic substrate or the like, the carbide 21 includes a rare metal in the electronic substrate.

  Further, the thermal decomposition apparatus 40 may burn the regenerated fuel 24 generated by the waste oil fueling apparatus 50 in the heating unit 44. Thereby, since the regenerated fuel 24 produced | generated within the heat processing system 10 is utilized, the operating cost of the heat processing system 10 can be reduced.

  The waste oil fueling device 50 is configured to regenerate the fuel 24 by finely mixing the ready-made oil 16 such as A heavy oil, light oil, kerosene, or the waste edible oil 18 and the generated oil 22 with, for example, an emulsification / mixing device. Is generated. The regenerated fuel 24 is stored in the regenerated fuel tank 52 and is used as fuel for the heating unit 44 or the boiler 60, for example. The ready-made oil 16 or the waste edible oil 18 is an example of a fuel, and the fuel to be emulsified and mixed is not limited to these.

  The carbide cooling device 54 cools the carbide 21 discharged from the thermal decomposition device 40 in a low oxygen or oxygen-free state. The carbide 21 carbonized by the pyrolysis device 40 burns when it is exposed to the atmosphere at a high temperature. Therefore, the carbide cooling device 54 radiates heat in a low oxygen or oxygen-free state, for example. The carbide 21 is cooled to 100 to 120 degrees or less by blowing steam 29 or the like of about 120 degrees. The cooled carbide 21 is stored in the carbide storage tank 56. The carbide 21 may be stored in the carbide storage tank 56 after being pulverized.

  The boiler 60 heats the condensed water 28 with the heat generated by burning the fuel to generate the steam 29. As the fuel, for example, the regenerated fuel 24 stored in the regenerated fuel tank 52 may be used.

  The incinerator 62 burns the uncondensed gas 23 generated in the thermal decomposition apparatus 40 and the carbide 21 stored in the carbide storage tank 56. The heat generated in the incinerator 62 is effectively used in the heat treatment system 10. For example, the highly water-containing organic waste 14 is dried in the drying device 30 or supplied to the thermal decomposition device 40, the boiler 60, and the incinerator 62. It may be used to preheat air.

  In the incinerator 62, the carbide 21 may be burned together with the uncondensed gas 23 using a pulverized coal boiler or a fluidized bed boiler. Moreover, you may burn the carbide | carbonized_material 21 on a grate.

  The exhaust gas processing device 70 processes the gas containing odor and water vapor discharged from the drying furnace 130 and discharges it into the atmosphere. For example, the exhaust gas treatment device 70 removes odor components, water vapor, and the like in the gas by introducing the gas into a treatment container sprayed with water in a mist form. The exhaust gas treatment device 70 may have a suction device that sucks the gas from the drying furnace 130.

  The rare metal recovery device 72 recovers the rare metal contained in the incineration ash 25 generated by the incineration device 62. The rare metal recovery device 72 recovers the rare metal by, for example, eluting the incineration ash 25 with an acid.

  With the above configuration, in the heat treatment system 10 according to the present embodiment, the high water content organic waste 14 is dried in advance before the water content is reduced before being put into the thermal decomposition apparatus 40. In the apparatus 40, it can suppress that the heat of the heating part 44 is used for evaporation of a water | moisture content. As a result, the temperature in the thermal decomposition furnace 42 of the thermal decomposition apparatus 40 is stabilized, and the composition and yield of the product oil 22 or the composition of the carbide 21 or the uncondensed gas 23 are stabilized.

  A drying apparatus 30 according to an embodiment will be described with reference to FIGS. 2 to 5. In FIG. 2, sectional drawing showing the outline | summary at the time of cut | disconnecting the drying apparatus 30 to a horizontal direction is shown. In FIG. 3, sectional drawing showing the outline | summary of the AA 'cross section of the drying apparatus 30 is shown. In FIG. 4, sectional drawing showing the outline | summary of the BB 'cross section of the drying apparatus 30 is shown. In FIG. 5, sectional drawing showing the outline | summary of the CC 'cross section of the drying apparatus 30 is shown.

  As shown in FIG. 2, the drying device 30 includes a drying furnace 130 into which the high water content organic waste 14 is charged, a jacket 136 disposed so as to cover at least a part of the outer periphery of the drying furnace 130, and the drying furnace 130. And a hopper 138 for holding the dried high water content organic waste 14 discharged from the water as the reduced water waste 15. Further, the drying device 30 includes legs 192, 194, 196, and 198 that support the drying furnace 130 and the jacket 136 from below.

  The drying furnace 130 is connected to the pre-drying furnace 132 to which the high-moisture-content organic waste 14 is charged and the charged high-water-content organic waste 14 is conveyed while being heated and stirred, and the pre-drying furnace 132. And a post-stage drying furnace 134 that transports and discharges the high water content organic waste 14 transported from the furnace 132 while heating and stirring. In the drying apparatus 30 according to the present embodiment, the volume in which the high water content organic waste 14 is accommodated in the upstream drying furnace 132 is larger than the volume in which the high water content organic waste 14 is accommodated in the subsequent drying furnace 134. The high water content organic waste 14 is initially low in bulk density and occupies a large volume with respect to the weight, but is reduced by crushing or fermentation while being dried in the front drying furnace 132. Therefore, since the volume occupied by the weight is reduced, according to the above configuration, the apparatus can be downsized without deteriorating the drying performance.

  The pre-stage drying furnace 132 has a hollow casing shape that extends in the transport direction of the high water content organic waste 14. The pre-stage drying furnace 132 includes a substantially flat upper surface 201 that is disposed substantially parallel to the horizontal direction and extends in the conveying direction of the highly water-containing organic waste 14, and a bottom surface that is disposed below the upper surface 201 and faces the upper surface 201. 202.

  The bottom surface 202 has a substantially semicircular cross section, and a curved portion 223 and a curved portion 224 extending in the transport direction of the highly water-containing organic waste 14 are connected in parallel to the transport direction of the highly water-containing organic waste 14. Have The bottom surface 202 includes a substantially flat partition plate 225 arranged substantially perpendicular to the horizontal direction along the connecting portion between the bending portion 223 and the bending portion 224. The vertical height of the partition plate 225 is set, for example, from about half the radius of the cross section of the curved portion 223 to approximately the same radius.

  The pre-stage drying furnace 132 has a substantially flat charging side surface 203 disposed substantially perpendicular to the conveying direction of the high water content organic waste 14 and a substantially flat plate-shaped side surface 203 disposed opposite to the charging side surface 203. And a discharge side surface 204. The discharge side surface 204 is provided with a drying furnace connection port 250 that connects the inside of the front drying furnace 132 and the inside of the rear drying furnace 134.

  The pre-stage drying furnace 132 includes a pair of substantially flat side surfaces 206 and 207 that are arranged substantially perpendicular to the horizontal direction and extend in the conveying direction of the highly water-containing organic waste 14. The top surface 201 and the bottom surface 202 are coupled to the side surface 206 and the side surface 207 at both ends in a direction parallel to the horizontal direction and perpendicular to the conveying direction of the highly water-containing organic waste 14 (hereinafter, sometimes referred to as the width direction). The The upper surface 201, the bottom surface 202, the side surface 206, and the side surface 207 are combined with the input side surface 203 and the discharge side surface 204 at both ends in the transport direction of the highly water-containing organic waste 14.

  With the above configuration, the pre-stage drying chamber 230 is formed above the bending portion 223 and the pre-stage drying chamber 240 is formed above the bending portion 224 inside the pre-stage drying furnace 132. In addition, the conveyance direction of the highly water-containing organic waste 14 may incline downward from the horizontal direction along the conveyance direction, for example. The top surface 201 or the bottom surface 202 may be disposed to be inclined with respect to the horizontal direction.

  The upper surface 201 is a waste input unit 210 into which the high water content organic waste 14 is input, an exhaust unit 370 that mainly discharges the gas in the front drying chamber 230, and a gas that mainly discharges the gas in the front drying chamber 240. And an exhaust portion 470 that performs. The waste input part 210, the exhaust part 370, and the exhaust part 470 are provided on the upper surface 201 on the upstream side in the transport direction of the highly water-containing organic waste 14, for example. The exhaust unit 370 and the exhaust unit 470 are provided, for example, at a position adjacent to the waste input unit 210 or upstream of the waste input unit 210 in the transport direction.

  The waste input unit 210 is disposed at the input port 212 provided through the upper surface 201, the tubular input unit body 214 disposed above the input port 212, and the input unit body 214. It has a flange 216 having a disk shape larger in diameter than the outer diameter of the main body 214, and a lid 218 connected to the flange 216. The waste input unit 210 is disposed, for example, near the center of the upper surface 201 in the direction perpendicular to the conveyance direction.

  The exhaust unit 370 is disposed through the upper surface 201, a tubular exhaust pipe 374 disposed above the exhaust port 372, and an outer diameter of the exhaust pipe 374. And a flange 376 having a larger-diameter disk shape. The exhaust unit 470 is disposed through the upper surface 201, a tubular exhaust pipe 474 disposed above the exhaust port 472, an upper part of the exhaust pipe 474, and an outer diameter of the exhaust pipe 474. And a flange 476 having a larger-diameter disk shape.

  The curved portion 223 of the bottom surface 202 includes a groove portion 340 that is disposed on the bottom portion of the curved portion 223 and extends in the conveyance direction of the highly water-containing organic waste 14. The cross-sectional shape of the groove 340 may be, for example, a U-shape or a U-shape. Both ends of the groove portion 340 in the transport direction of the highly water-containing organic waste 14 are joined to and closed by the input side surface 203 and the discharge side surface 204. The curved portion 224 includes a groove portion 440 having a structure similar to that of the groove portion 340.

  The pre-stage drying chamber 230 includes a stirring member 310 that stirs the high water content organic waste 14 and transports it toward the rear stage drying furnace 134, and a substantially flat plate disposed substantially perpendicular to the transport direction of the high water content organic waste 14. In the shape of a baffle plate 330. The baffle plate 330 is disposed at a position where it does not contact the stirring member 310.

  The agitating member 310 extends in the conveying direction of the high water content organic waste 14 and is disposed in a substantially cylindrical shaft 311 disposed through the upstream drying furnace 132 and the interior of the upstream drying chamber 230. It has a stirring blade 312 that rotates around a shaft 311 and conveys the highly water-containing organic waste 14 toward the subsequent drying furnace 134 while stirring. The stirring member 310 includes a stirring member driving unit 318 that is disposed outside the pre-stage drying furnace 132 and rotates the shaft 311. For example, a motor is used as the stirring member driving unit 318.

  A bearing 313 is disposed in a portion where the shaft 311 passes through the pre-stage drying furnace 132, and the bearing 313 supports the shaft 311 in a rotatable manner. The shaft 311 has a pulley 314 and a pulley 315 outside the pre-stage drying furnace 132. A belt 316 is wound around the pulley 314, and a belt 317 is wound around the pulley 315. The other end of the belt 317 is wound around the stirring member driving unit 318, and the rotation of the stirring member driving unit 318 is transmitted to the shaft 311. The belt 316 transmits the rotation of the shaft 311 to the upstream drying chamber 240 side.

  When the stirring blade 312 is attached to the shaft 311 and the stirring blade 312 is viewed from a direction perpendicular to the axial direction, the stirring blade 312 has a surface inclined with respect to a plane parallel to the axial direction. The surface may be inclined, for example, by 30 to 60 degrees from a surface parallel to the axial direction. In this embodiment, the stirring blade 312 has a screw shape attached so as to rotate about 2/3 around the shaft 311, and the stirring blade 312 is substantially equal along the axial direction of the shaft 311. A plurality of intervals are arranged. In addition, the stirring blade 312 may have a strip shape or a square plate shape, or a spatula shape having the above flat plate shape.

  Thereby, the stirring blade 312 can convey the high water content organic waste 14 toward the subsequent drying furnace 134 while rotating around the shaft 311 and stirring the high water content organic waste 14. Furthermore, since the stirring blade 312 has a fan-shaped notch portion when viewed from the axial direction, it is easy to scoop up the highly water-containing organic waste 14 being transported and collide with the baffle plate 330 to be pulverized.

  The baffle plate 330 crushes the highly water-containing organic waste 14 conveyed by the stirring blade 312 between the stirring blade 312 and the baffle plate 330. The baffle plate 330 is disposed, for example, at the bottom of the curved portion 223 and is disposed so as to sandwich the stirring blade 312 in the width direction and the conveyance direction. A groove 340 is disposed below the region where the stirring blade 312 stirs at the bottom of the curved portion 223, and the baffle plate 330 extends along the upper end of the groove 340 in the conveying direction of the high water content organic waste 14. Several are arranged. The baffle plate 330 has, for example, a fan-shaped flat plate shape with a central angle of about 90 degrees, and the fan shape has a radius of about 1/3 to 1/2 of the inner diameter of the curved portion 223, for example.

  Thereby, the stirring blade 312 can collide the scooped-up high water content organic waste 14 with the baffle plate 330 and crush it. A part of the crushed high water content organic waste 14 falls into the groove 340.

  The groove portion 340 is accommodated in the groove portion 340 and is disposed in the vicinity of the upper end of the groove portion 340 with a screw 350 that conveys the highly water-containing organic waste 14 in the groove portion 340 in the direction opposite to the conveyance direction. And a strainer 360 for preventing the waste 14 from falling into the groove 340. The screw 350 has a substantially cylindrical shaft 351 that extends in the transport direction of the highly water-containing organic waste 14 and is disposed so as to pass through the pre-stage drying furnace 132, and a screw-shaped blade 352. The blade 352 rotates around the shaft 351 and transports the high water content organic waste 14 in the groove 340 in the direction opposite to the transport direction of the high water content organic waste 14 by the stirring member 310.

  A bearing 353 is disposed at a portion where the shaft 351 passes through the pre-stage drying furnace 132, and the bearing 353 supports the shaft 351 in a rotatable manner. A screw drive unit 358 that rotates the shaft 351 is disposed outside the pre-stage drying furnace 132. For example, a motor is used for the screw drive unit 358. The shaft 351 has a pulley 354 outside the pre-stage drying furnace 132. Since the belt 356 is wound around the pulley 354 and the other end of the belt 356 is wound around the screw driving unit 358, the rotation of the screw driving unit 358 is transmitted to the shaft 351.

  The strainer 360 has a strainer opening 362 and a strainer opening 364 in the vicinity of both ends in the transport direction of the high water content organic waste 14. The strainer opening 362 and the strainer opening 364 may be a mesh having a coarser mesh than the other parts of the strainer 360. With the above structure, a part of the high water content organic waste 14 conveyed to the drying furnace connection port 250 falls into the groove portion 340 from the strainer opening 364 and is high water content organic by the stirring member 310 by the screw 350. The waste 14 is transported in the direction opposite to the transport direction. Thereby, it can suppress that the drying furnace connection port 250 is clogged with the high water content organic waste 14, and the high water content organic waste 14 can be efficiently conveyed to the subsequent stage drying furnace 134. Moreover, since the average residence time of the high water content organic waste 14 can be lengthened, the water content of the high water content organic waste 14 conveyed to the latter drying furnace 134 can be reduced.

  The screw 350 may be switchable between forward rotation and reverse rotation. Thereby, the screw 350 can be reversely rotated from time to time to convey the highly water-containing organic waste 14 in the groove 340 to the subsequent drying furnace 134 side.

  The pre-stage drying chamber 240 has substantially the same structure as the pre-stage drying chamber 230, and includes a stirring member 410 that conveys the high water content organic waste 14 toward the rear stage drying furnace 134 while stirring, and a high water content organic waste. A substantially flat baffle plate 430 disposed substantially perpendicular to the conveying direction of the object 14. The baffle plate 430 has the same structure as the baffle plate 330 and is disposed at a position where it does not contact the stirring member 410.

  The stirring member 410 has the same structure as the stirring member 310 and includes a shaft 411 and a stirring blade 412. The shaft 411 has a structure similar to that of the shaft 311, and a bearing 413 is disposed in a portion penetrating the front-stage drying furnace 132, and a pulley 414 is provided outside the front-stage drying furnace 132. The stirring blade 412 has the same structure as the stirring blade 312, but the stirring blade 412 is arranged on the shaft 411 so that the inclination with respect to the shaft 411 is opposite to the inclination of the stirring blade 312 with respect to the shaft 311. Thereby, the inclination of the stirring blade 312 with respect to the shaft 311 and the inclination of the stirring blade 412 with respect to the shaft 411 are substantially symmetric with respect to the partition plate 225.

  A belt 316 is wound around the pulley 414, and the rotation of the stirring member driving unit 318 is transmitted to the shaft 411 through the shaft 311. The belt 316 may be looped between the shaft 311 and the shaft 411. Thereby, the stirring member 310 and the stirring member 410 can be rotated in the opposite directions, and the highly water-containing organic waste 14 can be conveyed to the subsequent drying furnace 134 side while being collected to the partition plate 225 side.

  The groove part 440 has the same structure as the groove part 340 and includes a screw 450 and a strainer 460. The screw 450 has a structure similar to that of the screw 350, and includes a shaft 451 having a structure similar to the shaft 351 and a blade 452 having a structure similar to the blade 352, and the shaft 451 is a pre-stage drying furnace. A bearing 453 is disposed in a portion penetrating 132, and the bearing 453 supports the shaft 451 rotatably.

  A screw drive unit 458 that rotates the shaft 451 is disposed outside the pre-stage drying furnace 132. For example, a motor is used for the screw drive unit 458. The shaft 451 has a pulley 454 outside the pre-stage drying furnace 132. Since the belt 456 is wound around the pulley 454 and the other end of the belt 456 is wound around the screw driving unit 458, the rotation of the screw driving unit 458 is transmitted to the shaft 451.

  2 is a cross-sectional view of the drying device 30 cut along a plane including the drying furnace connection port 250. In FIG. 2, the stirring member 310 and the stirring member 410 are shown by dotted lines for the sake of explanation. Further, the screw 350 and the screw 450 are omitted for explanation.

  The strainer 460 has a structure similar to that of the strainer 360 and has a strainer opening 462 and a strainer opening 464 in the vicinity of both ends in the conveying direction of the high water content organic waste 14. Like the screw 450 and the screw 350, the forward rotation and the reverse rotation may be freely switched.

  The post-stage drying furnace 134 is arranged below the pre-stage drying furnace 132 and is connected in series with the pre-stage drying furnace 132 in the conveying direction of the high water content organic waste 14, for example. The post-stage drying furnace 134 has a hollow casing shape that extends in the conveying direction of the high water content organic waste 14. The post-stage drying furnace 134 is disposed substantially in parallel with the horizontal direction and extends in the conveying direction of the highly water-containing organic waste 14, and is disposed below the upper surface 501 so as to face the upper surface 501. And a semi-cylindrical bottom surface 502 extending in the conveying direction of the highly water-containing organic waste 14.

  The post-stage drying furnace 134 includes a substantially flat connecting side surface 503 disposed substantially perpendicular to the conveying direction of the high water content organic waste 14 and a substantially flat plate-shaped connecting surface 503 disposed opposite to the connecting side surface 503. And a discharge side surface 504. The connection side surface 503 is coupled to the discharge side surface 204 of the pre-stage drying furnace 132. The connection side surface 503 is provided with a drying furnace connection port 250 that connects the inside of the pre-stage drying furnace 132 and the inside of the post-stage drying furnace 134.

  The post-stage drying furnace 134 has a pair of substantially flat side surfaces 506 and 507 that are arranged substantially perpendicular to the horizontal direction and extend in the conveying direction of the highly water-containing organic waste 14. The top surface 501 and the bottom surface 502 are coupled to the side surface 506 and the side surface 507 at both ends in a direction parallel to the horizontal direction and perpendicular to the conveying direction of the highly water-containing organic waste 14 (hereinafter, sometimes referred to as the width direction). The The upper surface 501, the bottom surface 502, the side surface 506, and the side surface 507 are combined with the connection side surface 503 and the discharge side surface 504 at both ends in the transport direction of the highly water-containing organic waste 14.

  With the above configuration, the rear drying chamber 530 is formed inside the rear drying furnace 134. In addition, the conveyance direction of the highly water-containing organic waste 14 may incline downward from the horizontal direction along the conveyance direction, for example. The top surface 501 or the bottom surface 502 may be disposed to be inclined with respect to the horizontal direction.

  The bottom surface 502 includes a waste discharge unit 510 that discharges the high water content organic waste 14 dried in the front drying furnace 132 and the rear drying furnace 134. The waste discharge unit 510 includes a discharge port 512 provided through the bottom surface 502, a cylindrical discharge unit main body 516 disposed below the discharge port 512, and the interior of the discharge port 512 or the discharge unit main body 516. For example, it has a shutter 514 that communicates and seals the discharge port 512 to the outside by sliding in the horizontal direction.

  The bottom surface 502 includes a groove 640 that is disposed at the bottom of the bottom surface 502 and extends in the transport direction of the highly water-containing organic waste 14. The cross-sectional shape of the groove 640 may be, for example, a U-shape or a U-shape. One end of the groove 640 in the conveying direction of the high water content organic waste 14 is coupled to the connection side surface 503, and the other end is coupled to the waste discharge unit 510.

  The side surface 506 and the side surface 507 include a heated gas inlet 526 and a heated gas inlet 527 provided through the side 506 and the side 507, respectively. The inside of the jacket 136 and the rear drying chamber 530 are connected via the heated gas inlet 526 and the heated gas inlet 527.

  The post-stage drying chamber 530 has the same structure as the pre-stage drying chamber 230 or the pre-stage drying chamber 240, and is directed toward the waste discharge unit 510 while stirring the high water content organic waste 14 conveyed from the pre-stage drying furnace 132. And a stirring member 610 for transporting and a substantially flat baffle plate 630 disposed substantially perpendicular to the transporting direction of the highly water-containing organic waste 14. It arrange | positions in the position which does not contact the stirring member 610. FIG.

  The stirring member 610 has the same structure as the stirring member 310, and includes a shaft 611 and a stirring blade 612. The shaft 611 has the same structure as the shaft 311, and a bearing 613 is disposed in a portion that penetrates the post-stage drying furnace 134, and the bearing 613 rotatably supports the shaft 611. A stirring member driving unit 618 is disposed outside the rear drying furnace 134 and is coupled to the shaft 611. As the stirring member driving unit 618, for example, a motor is used. The stirring blade 612 has the same structure as the stirring blade 312.

  The groove part 640 has the same structure as the groove part 340 and includes a screw 650 and a strainer 660. The screw 650 has the same structure as the screw 350, and has a shaft 651 similar to the shaft 351 and a blade 652 similar to the blade 352, and the shaft 651 passes through the post-stage drying furnace 134. Is provided with a bearing 653, and the bearing 653 rotatably supports the shaft 651.

  A screw drive unit 658 that rotates the shaft 651 is disposed outside the post-stage drying furnace 134 and is coupled to the shaft 651. As the screw drive unit 658, for example, a motor is used.

  The strainer 660 has the same structure as the strainer 360, and has a strainer opening 662 and a strainer opening 664 near both ends in the transport direction of the highly water-containing organic waste 14. As with the screw 350, the screw 650 may be switchable between forward rotation and reverse rotation.

  The jacket 136 includes a hollow front stage jacket 150 disposed so as to cover at least a part of the outer periphery of the front stage drying furnace 132, for example, the bottom surface 202, the charging side surface 203, the side surface 206, and the side surface 207. The jacket 136 includes a hollow rear jacket 160 disposed so as to cover at least a part of the outer periphery of the rear drying furnace 134, for example, the bottom surface 502, the connecting side surface 503, the side surface 506, and the side surface 507. The jacket 136 is an example of a heated gas introduction pipe, and the outlet of the jacket 136 may open to at least one of the front-stage drying furnace 132 and the rear-stage drying furnace 134. As another example of the heated gas introduction pipe through which the gas for heating the pre-stage drying furnace 132 and the post-stage drying furnace 134 flows, it is arranged so as to extend in the transport direction of the high water content organic waste 14 and sandwich the groove 340 and the groove 440. The piping may be connected to the heated gas inlet 526 and the heated gas inlet 527.

  The front jacket 150 exposes a heated gas inflow portion 152 into which a gas for heating the front drying furnace 132 and the rear drying furnace 134 flows, a part of the input side surface 203 and a part of the discharge side surface 204 to the outside. A jacket opening 156 and a jacket opening 158 are included. The heated gas inflow portion 152 includes a heated gas inflow port 153 and a heated gas inflow pipe 154 that communicate the inside and the outside of the front jacket 150. The shaft 311, the shaft 351, the shaft 411, and the shaft 451 pass through the input side surface 203 and the discharge side surface 204 at positions inside the jacket opening 156 and the jacket opening 158. Thereby, it can suppress that the axis | shaft 311, the axis | shaft 351, the axis | shaft 411, and the axis | shaft 451 are heated by the gas in the front | former stage jacket 150 in the exterior of the pre-stage drying chamber 230 and the pre-stage drying chamber 240.

  The rear-stage jacket 160 is connected to the front-stage jacket 150 so that the gas in the front-stage jacket 150 flows into the jacket communication port 162 and the jacket communication port 164, and the jacket opening 166 that exposes the discharge side surface 504 to the outside. A jacket opening 168 is provided. The rear jacket 160 is disposed so as to cover the heated gas inlet 526 and the heated gas inlet 527, and introduces the heated gas into the rear drying chamber 530 through the heated gas inlet 526 and the heated gas inlet 527. Since the shaft 611 and the shaft 651 pass through the discharge side surface 504 at positions inside the jacket opening 166 and the jacket opening 168, the shaft 611 and the shaft 651 are gas in the rear jacket 160 outside the rear drying chamber 530. Can be suppressed from being heated.

  In the present embodiment, at least one of the exhaust gas 26 generated in the thermal decomposition apparatus 40 and the combustion gas 27 generated in the incineration apparatus 62 is introduced into the front stage jacket 150. Thereby, the front-stage drying furnace 132 and the rear-stage drying furnace 134 can be heated using the waste heat generated in the thermal decomposition apparatus 40 or the incineration apparatus 62, and the thermal efficiency of the entire heat treatment system 10 can be improved.

  The gas heats the front drying furnace 132 and the rear drying furnace 134 from the outside while flowing through the jacket 136, and then passes through the heated gas inlet 526 and the heated gas inlet 527 and is introduced into the rear drying chamber 530. Is done. The gas introduced into the latter drying chamber 530 dries the high water content organic waste 14 while passing through the latter drying chamber 530. The gas inside the latter drying chamber 530 flows into the former drying chamber 230 or the former drying chamber 240 from the drying furnace connection port 250 and passes through the inside of the former drying chamber 230 and the former drying chamber 240, and the high water content organic waste. 14 is dried and then discharged from the exhaust unit 370 or the exhaust unit 470 to the outside of the drying apparatus 30.

  Next, the operation of the drying device 30 will be described. The highly water-containing organic waste 14 introduced into the pre-stage drying furnace 132 from the waste input section 210 is distributed to the pre-stage drying chamber 230 and the pre-stage drying chamber 240 by the partition plate 225.

  Inside the pre-stage drying chamber 230 and the pre-stage drying chamber 240, the highly water-containing organic waste 14 is conveyed toward the drying furnace connection port 250 while being stirred by the stirring member 310 and the stirring member 410. The highly water-containing organic waste 14 flows into the upstream drying chamber 230 and the upstream drying chamber 240 from the drying furnace connection port 250 through the upstream jacket 150 disposed outside the upstream drying chamber 230 and the upstream drying chamber 240. Heated by the incoming gas and dried. The highly water-containing organic waste 14 is crushed by the stirring member 310 and the baffle plate 330 or crushed by the stirring member 410 and the baffle plate 430 while being transported inside the pre-stage drying furnace 132. Reduced volume.

  When the temperature of the high water content organic waste 14 is about 70 to 90 degrees, the volume of the high water content organic waste 14 is reduced by fermentation as well as volume reduction by drying. Since the high water content organic waste 14 in the pre-stage drying furnace 132 contains a large amount of water, if the temperature of the gas flowing into the pre-stage drying chamber 230 and the pre-stage drying chamber 240 is lower than about 250 degrees, the high water content organic waste The temperature of the object 14 does not become too high. When the temperature of the gas flowing into the pre-stage drying chamber 230 and the pre-stage drying chamber 240 is about 120 to 130 degrees, it is possible to prevent the highly water-containing organic waste 14 from being burnt.

  The reduced high water content organic waste 14 is fed into the subsequent drying chamber 530 of the subsequent drying furnace 134 through the drying furnace connection port 250. The high water content organic waste 14 thrown into the latter drying chamber 530 is conveyed toward the waste discharge unit 510 while being stirred by the stirring member 610. The highly water-containing organic waste 14 flows into the downstream drying chamber 530 from the gas flowing through the downstream jacket 160 disposed outside the downstream drying chamber 530, and from the heated gas inlet 526 and the heated gas inlet 527. It is heated by the coming gas and dried. The highly water-containing organic waste 14 is reduced in volume by being crushed by the stirring member 610 and the baffle plate 630 while being transported inside the post-stage drying furnace 134. With the above configuration, the drying device 30 can reduce the water content of the high water content organic waste 14 to about 20 to 30%.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

The block diagram showing the outline | summary of the heat processing system 10 which concerns on one Embodiment. The sectional view of the horizontal direction of drying device 30 concerning one embodiment. The AA 'sectional view of drying device 30 concerning one embodiment. BB 'sectional drawing of the drying apparatus 30 which concerns on one Embodiment. CC 'sectional drawing of the drying apparatus 30 which concerns on one Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat processing system, 12 Resin waste, 14 High water content organic waste, 15 Reduced water waste, 16 Precast oil, 18 Waste cooking oil, 20 Dry distillation gas, 21 Carbide, 22 Production oil, 23 Uncondensed gas, 24 Regenerated fuel , 25 Incinerated ash, 26 Exhaust gas, 27 Combustion gas, 28 Condensate, 29 Steam, 30 Drying device, 40 Pyrolysis device, 42 Pyrolysis furnace, 44 Heating unit, 46 Dry distillation gas cooling unit, 50 Waste oil fueling device, 52 Regenerated fuel tank, 54 Carbide cooling device, 56 Carbide storage tank, 60 Boiler, 62 Incinerator, 70 Exhaust gas treatment device, 72 Rare metal recovery device, 130 Drying furnace, 132 Pre-stage drying furnace, 134 Post-stage drying furnace, 136 Jacket, 138 Hopper 150 Front jacket, 152 Heated gas inlet, 153 Heated gas inlet, 154 Heated Gas inlet pipe, 155 flange, 156 jacket opening, 158 jacket opening, 160 back jacket, 162 jacket communication port, 164 jacket communication port, 166 jacket opening, 168 jacket opening, 192 leg, 194 leg, 196 Leg, 198 Leg, 201 Top, 202 Bottom, 203 Input side, 204 Discharge side, 206 Side, 207 Side, 210 Waste input, 212 Input, 214 Input body, 216 Flange, 218 Lid 223 Curved portion, 224 Curved portion, 225 Partition plate, 230 Previous stage drying chamber, 240 Previous stage drying chamber, 250 Drying furnace connection port, 310 Stirring member, 311 shaft, 312 Stirring blade, 313 Bearing, 314 Pulley, 315 Pulley, 316 Belt, 317 belt 318 Stirring member driving section, 330 baffle plate, 340 groove section, 350 screw, 351 shaft, 352 blade, 353 bearing, 354 pulley, 356 belt, 358 screw driving section, 360 strainer, 362 strainer opening, 364 strainer opening, 370 Exhaust part, 372 exhaust port, 374 exhaust pipe, 376 flange, 410 stirring member, 411 shaft, 412 stirring blade, 413 bearing, 414 pulley, 430 baffle plate, 440 groove, 450 screw, 451 shaft, 452 blade, 453 bearing, 454 Pulley, 456 belt, 458 Screw drive part, 460 Strainer, 462 Strainer opening, 464 Strainer opening, 470 Exhaust part, 472 Exhaust port, 474 Exhaust pipe, 476 Flange, 501 Upper surface , 502 bottom surface, 503 connection side surface, 504 discharge side surface, 506 side surface, 507 side surface, 510 waste discharge unit, 512 discharge port, 514 shutter, 516 discharge unit main body, 526 heating gas introduction port, 527 heating gas introduction port, 530 Subsequent drying chamber, 610 stirring member, 611 shaft, 612 stirring blade, 613 bearing, 618 stirring member driving portion, 630 baffle plate, 640 groove portion, 650 screw, 651 shaft, 652 blade, 653 bearing, 658 screw driving portion, 660 Strainer, 662 Strainer opening, 664 Strainer opening

Claims (12)

A heat treatment system for waste,
A drying device for drying high water content organic waste;
Resin waste and the high water content organic waste dried by the drying apparatus are accommodated, and the resin waste and the dried high water content organic waste are mixed and heated for thermal decomposition. A thermal decomposition system. The drying device
A pre-drying furnace in which the high water content organic waste is charged, and the charged high water content organic waste is conveyed while being heated and stirred;
A post-stage drying furnace connected to the pre-stage drying furnace and transporting and discharging the high water content organic waste conveyed from the pre-stage drying furnace while heating and stirring;
2. The heat treatment system according to claim 1, wherein a volume for storing the high water content organic waste in the former drying furnace is larger than a volume for storing the high water content organic waste in the second drying furnace. The pre-stage drying furnace is:
An agitating blade that rotates around an axis and conveys the highly water-containing organic waste toward the subsequent drying furnace while agitating the waste;
The stirring blade is arranged below the stirring area, and a groove extending in the transport direction of the high water content organic waste,
The heat treatment system according to claim 2, further comprising: a screw that is accommodated in the groove portion and rotates about an axis to convey the highly water-containing organic waste in the groove portion in a direction opposite to a conveying direction.   The heat treatment system according to claim 3, wherein the screw is switchable between normal rotation and reverse rotation.   The pre-stage drying furnace and the post-stage drying furnace have a heated gas introduction pipe through which a gas for heating the pre-stage drying furnace and the post-stage drying furnace flows, and an outlet of the heating gas introduction pipe is connected to the post-stage drying furnace and the pre-stage drying furnace. The heat treatment system according to claim 2, wherein the heat treatment system is open to at least one of the drying furnaces. Further comprising a waste oil fueling device for producing a regenerated fuel by mixing the produced oil and fuel produced by the oilification by the pyrolysis device,
The heat treatment system according to claim 1, wherein the pyrolysis device burns the regenerated fuel generated by a waste oil fueling device. An incinerator for incinerating the carbide and gas generated by the thermal decomposition apparatus;
The heat treatment system according to claim 1, wherein the drying apparatus is heated using waste heat generated in the incinerator.   The heat treatment system according to claim 1, wherein the drying apparatus is heated using waste heat generated in the thermal decomposition apparatus. A drying device for drying a hydrous material,
A pre-stage drying furnace in which the hydrated material is charged, and the hydrated material charged is conveyed while being heated and stirred;
A post-stage drying furnace connected to the pre-stage drying furnace and transporting and discharging the water-containing material conveyed from the pre-stage drying furnace while heating and stirring;
A drying apparatus in which the volume containing the hydrated material in the front-stage drying furnace is larger than the volume containing the hydrated material in the latter-stage drying furnace. The pre-stage drying furnace is:
An agitation blade that rotates around an axis and conveys the hydrated material toward the subsequent drying furnace while stirring the hydrated material;
The stirring blade is disposed below the stirring region, and a groove portion extending in the transport direction of the hydrated material,
The drying apparatus according to claim 9, further comprising: a screw that is accommodated in the groove portion and rotates around an axis to convey the hydrated material in the groove portion in a direction opposite to a conveying direction.   The drying device according to claim 10, wherein the screw is switchable between forward rotation and reverse rotation.   The pre-stage drying furnace and the post-stage drying furnace have a heated gas introduction pipe through which a gas for heating the pre-stage drying furnace and the post-stage drying furnace flows, and an outlet of the heating gas introduction pipe is connected to the post-stage drying furnace and the pre-stage drying furnace. The drying apparatus according to claim 9, wherein the drying apparatus is open to at least one of the drying furnaces.

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