JP2008232538A - Pyrolyzing furnace shaft sealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pyrolyzing furnace shaft sealing device capable of following thermal deformation caused by the thermal expansion of a rotating drum in heating and pyrolyzing a treated material such as waste enclosed in the rotating drum and stably maintaining sealing performance for a long period of time. <P>SOLUTION: The pyrolyzing furnace shaft sealing device 2 comprises a rotating seal plate 34 connected to the rotating drum 11 side and having an axial cylinder 34b, and a fixed seal plate 35 provided on the outlet hood 29 side and having a radial disk part 35a. The device 2 also comprises an end face seal 36 arranged between the rotating seal plate and the fixed seal plate and provided in a slidable manner at the rotating seal plate, and a radial seal 37 arranged radially outward from the end face seal and provided in a slidable manner at the axial cylinder part 34b of the rotating seal plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention heats and thermally decomposes an object to be treated such as waste stored in a rotating drum by an external heating method, and separates it into a pyrolysis gas and a pyrolysis residue mainly composed of non-volatile components. The present invention relates to a thermal cracking furnace shaft sealing device that is provided in a horizontal external heat rotary pyrolysis furnace that discharges to a hood and is disposed between a rotary drum and an outlet hood.

  2. Description of the Related Art Conventionally, there is a known thermal decomposition processing system that processes waste by thermal decomposition in a waste processing system that converts unsorted and untreated waste containing various pollutants into usable materials by processing. It has been.

  FIG. 15 is a diagram showing an example of such a thermal decomposition treatment system. In FIG. 15, an object 101 such as waste is supplied into the pyrolysis furnace device 104 by the waste supply device 103 via the pretreatment device 102 and is thermally decomposed in the pyrolysis furnace device 104. It is processed. Here, the organic pyrolysis gas 105 generated by pyrolysis in the pyrolysis furnace device 104 is treated by regeneration to gasification or oilification, or combustion. On the other hand, the non-volatile pyrolysis residue 106 generated in the pyrolysis furnace device 104 is recycled through the residue cooling device 107.

  The pyrolysis furnace apparatus 104, which is the main equipment of such a pyrolysis processing system, generally uses a horizontal external thermal rotary pyrolysis furnace that heats a rotating drum from which waste or the like is pyrolyzed. Yes. In this horizontal type external heat rotation type pyrolysis furnace, the pyrolysis process is performed in a state where the oxygen concentration is extremely low in the rotary drum. Therefore, the rotary part and the stationary part are shut off from the outside air by a shaft seal.

  However, since the rotary drum of the above-described pyrolysis furnace 104 is heated to a high temperature, thermal expansion may occur on the order of a hundred millimeters in the axial direction of the rotary drum and on the order of several tens of millimeters in the radial direction of the rotary drum. In addition, the temperature state changes depending on the operating conditions, and the thermal deformation also changes complicatedly. For this reason, in such a thermal decomposition processing system, the soundness of the shaft seal performance of the thermal decomposition furnace device 104 is strongly required in order to perform the thermal decomposition processing stably for a long period of time. .

  The present invention has been made in consideration of such points, and even when the diameter of the rotary drum of the pyrolysis furnace is large and the temperature at which the rotary drum is heated is high, the thermal expansion of the rotary drum is effective. It is an object of the present invention to provide a thermal cracking furnace shaft sealing device for a horizontal external heat rotary cracking furnace that can follow thermal deformation and can maintain the sealing performance stably for a long period of time.

  The present invention heats and thermally decomposes an object to be treated such as waste stored in a rotating drum by an external heating method, and separates it into a pyrolysis gas and a pyrolysis residue mainly composed of non-volatile components. In a thermal cracking furnace shaft seal device provided in a horizontal external heat rotary pyrolysis furnace that discharges to a hood and disposed between a rotary drum and an outlet hood, a rotary seal connected to the rotary drum side and having an axial cylindrical portion A plate, a fixed seal plate having a radial disk portion provided on the outlet hood side, an end face seal disposed between the rotary seal plate and the fixed seal plate, and slidably provided on the rotary seal plate; A radial seal disposed between the rotary seal plate and the fixed seal plate, radially outward from the end face seal, and slidably provided on the axial cylindrical portion of the rotary seal plate. Pyrolytic furnace shaft sealing device A.

  The present invention is the thermal cracking furnace shaft sealing device characterized in that both the end face seal and the radial seal are ring-shaped and can be divided in the circumferential direction, and the end face seal and the radial seal are made of a carbon material.

  According to the present invention, the rotary seal plate has an inclined disc portion that is inclined so that the separation distance decreases radially outward with respect to the fixed seal plate, the end face seal has a ring shape, and the circumferential direction. The split seam part of the end face seal is spherically combined and combined in a ring shape, and is arranged between the radial disk part of the fixed seal plate and the inclined disk part of the rotary seal plate. Is a thermal cracking furnace shaft seal device.

  In the present invention, the rotary seal plate has a rotary side radial disc portion provided in parallel to the radial disc portion of the fixed seal plate, and the end face seal has a ring shape and is divided in the circumferential direction. The split seam portion of the end face seal is spherically coupled and combined in a ring shape, and is arranged between the radial disk portion of the fixed seal plate and the rotation side radial disk portion of the rotary seal plate. This is a pyrolysis furnace shaft seal device.

  The present invention heats and thermally decomposes an object to be treated such as waste stored in a rotating drum by an external heating method, and separates it into a pyrolysis gas and a pyrolysis residue mainly composed of non-volatile components. A rotary seal plate connected to the rotary drum side and an outlet hood in a thermal cracking furnace shaft sealing device provided in a horizontal external heat rotary pyrolysis furnace discharged to the hood and disposed between the rotary drum and the outlet hood Fixed seal plate having a radial disk portion provided on the side, an end face seal disposed between the rotary seal plate and the fixed seal plate, and slidably provided on the rotary seal plate, and fixed to the rotary seal plate A thermal cracking furnace shaft sealing device comprising a packing seal disposed between the sealing plate and radially outward from the end face seal.

  The present invention is the thermal cracking furnace shaft sealing device, wherein the end face seal is made of a carbon material, and the packing seal is made of heat-resistant rubber.

  According to the present invention, the rotary seal plate has an inclined disc portion that is inclined so that the separation distance decreases radially outward with respect to the fixed seal plate, the end face seal has a ring shape, and the circumferential direction. The split seam part of the end face seal is spherically combined and combined in a ring shape, and is arranged between the radial disk part of the fixed seal plate and the inclined disk part of the rotary seal plate. Is a thermal cracking furnace shaft seal device.

  In the present invention, the rotary seal plate has a rotary side radial disc portion provided in parallel to the radial disc portion of the fixed seal plate, and the end face seal has a ring shape and is divided in the circumferential direction. The split seam portion of the end face seal is spherically coupled and combined in a ring shape, and is arranged between the radial disk portion of the fixed seal plate and the rotation side radial disk portion of the rotary seal plate. This is a pyrolysis furnace shaft seal device.

  The present invention is characterized in that an inert gas injection device is provided on a surface opposite to the end face seal of the fixed seal plate, radially outward from the end face seal and radially inward from the radial seal. It is a pyrolysis furnace shaft seal device.

  The present invention is characterized in that an inert gas injection device is provided on the surface opposite to the end seal of the fixed seal plate, radially outward from the end seal and radially inward from the packing seal. It is a pyrolysis furnace shaft seal device.

  The present invention provides a pyrolysis furnace shaft characterized in that a cleaning port is provided on the surface opposite to the end seal of the fixed seal plate, radially outward from the end seal and radially inward from the radial seal. It is a sealing device.

  The present invention relates to a pyrolysis furnace shaft characterized in that a cleaning port is provided on the surface opposite to the end face seal of the fixed seal plate, radially outward from the end face seal and radially inward from the packing seal. It is a sealing device.

  The present invention is characterized in that an expansion joint is interposed between the outlet hood and the fixed seal plate, and a cooling single pipe is provided between the expansion joint and the outlet hood and between the expansion joint and the fixed seal plate, respectively. This is a thermal cracking furnace shaft sealing device.

  The present invention heats and thermally decomposes an object to be treated such as waste stored in a rotating drum by an external heating method, and separates it into a pyrolysis gas and a pyrolysis residue mainly composed of non-volatile components. In a pyrolysis furnace shaft seal device provided in a horizontal external heat rotary pyrolysis furnace that discharges to the hood and disposed between the rotary drum and the outlet hood, an inclined body that is connected to the rotary drum side and has an inclined surface And a fixed seal plate provided on the outlet hood side and having a pair of radial disk portions, and one radius of the fixed seal plate is provided between the fixed seal plate and the rotary seal plate. A first end face seal is provided between the directional disc portion and the inclined body of the rotary seal plate, and a second end face seal is provided between the other radial disc portion and the inclined body of the rotary seal plate. It is a pyrolysis furnace shaft seal device.

  The present invention is directed to a thermal decomposition characterized in that a garter spring is attached to a lower half circumferential portion below a horizontal plane including the central axis of the rotating drum of the radial seal in order to lift the lower half circumferential portion of the radial seal. It is a furnace shaft sealing device.

  According to the present invention, even when the diameter of the rotary drum of the pyrolysis furnace apparatus is large and the temperature at which the rotary drum is heated is high, the rotary seal plate connected to the rotary drum side and the outlet hood side are provided. The end face seal and the radial seal arranged between the fixed seal plate and the outside seal can be blocked from flowing in between the rotary seal plate and the fixed seal plate. Further, the sealing performance can be maintained following the thermal deformation caused by the thermal expansion of the rotating drum. As a result, the sealing performance of the pyrolysis furnace shaft sealing device can be stably maintained for a long period of time.

DESCRIPTION OF EXEMPLARY EMBODIMENTS First Embodiment Hereinafter, an embodiment of the invention will be described with reference to the drawings. Here, FIG. 1 thru | or FIG. 7 is a figure which shows 1st Embodiment of the thermal decomposition shaft sealing apparatus by this invention. Among these, FIG. 1 is a whole block diagram showing a horizontal external heat rotation type pyrolysis furnace, FIG. 2 is a detailed view of part A of the pyrolysis furnace shaft sealing device, and FIG. 3 is a split seam portion of the end face seal. 4 is a configuration diagram showing a split seam portion of the radial seal, FIG. 5 is a view in the direction of arrow B of the pyrolysis furnace shaft sealing device, and FIGS. 6 and 7 are It is a sealing action explanatory view of an end face seal.

  The thermal cracking furnace shaft seal device 2 according to the present invention heats and thermally decomposes an object to be treated such as waste 20 stored in a rotary drum 11 by an external heating method, and mainly decomposes the pyrolysis gas 105 and nonvolatile components. It is provided in the horizontal external heat rotation type pyrolysis furnace 1 that is separated into the pyrolysis residue 106 and discharged to the outlet hood 29, and is disposed between the rotary drum 11 and the outlet hood 29.

  First, referring to FIG. 1, the overall configuration of the horizontal external heat rotary pyrolysis furnace 1 will be described. The horizontal external-heat-rotating pyrolysis furnace 1 is installed on the stationary frame 3, the charging hopper 21 that temporarily stores the waste 20, and is installed on the stationary frame 3 so as to be rotatable with respect to the stationary frame 3. The rotary drum 11 connected to the charging hopper 21 for thermally decomposing the waste 20 and the pyrolysis gas 105 and the pyrolysis residue generated by the thermal decomposition are installed on the stationary frame 3 and connected to the rotary drum 11. And an outlet hood 29 for discharging 106. In addition, the rotary drum 11 is provided with a combustion chamber 27 for heating the rotary drum 11 so as to be installed on the stationary frame 3 and to store the rotary drum 11. Burners 28 a, 28 b and 28 c for heating the rotary drum 11 are provided in the lower part of the combustion chamber 27 and below the rotary drum 11.

  Among these, the rotating drum 11 is provided with a tire 12 on the inlet side of the rotating drum 11, and the tire 12 is rotatably supported by a roller 14 installed on the stationary frame 3. Similarly, the rotating drum 11 is provided with a tire 13 on the outlet side of the rotating drum 11, and the tire 13 is rotatably supported by a roller 15 installed on the stationary frame 3. Either the tire 12 or the tire 13 restrains the movement of the rotating drum 11 along the axial direction of the rotating drum 11.

  A driving device 19 for rotating the rotating drum 11 is provided on the inlet side of the rotating drum 11. The drive device 19 includes a motor 18, a chain 17 for transmitting the rotation of the motor 18, and a sprocket 16 provided on the rotating drum 11 side and engaged with the chain 17 to transmit the rotation of the motor 18. is doing.

  In addition, a charging device 22 for feeding the waste 20 stored in the charging hopper 21 into the rotating drum 11 is connected to the inlet side of the rotating drum 11. The charging device 22 includes a drive motor 26, a screw main shaft 24 connected to the output shaft of the drive motor 26, a screw blade 25 provided on the screw main shaft 24, and for introducing waste 20 into the rotary drum 11. have. The feeding device 22 has a screw casing 23 provided so as to cover the screw main shaft 24 and the screw blades 25.

  An inlet-side shaft seal device 30 is provided between the rotary drum 11 and the charging device 22 in order to block the inflow of outside air into the rotary drum 11. Further, between the rotary drum 11 and the outlet hood 29, a pyrolysis furnace shaft seal device (also referred to as an outlet side shaft seal device) 2 according to the present invention is provided in order to block the inflow of outside air into the rotary drum 11. It has been.

  Next, the pyrolysis furnace shaft sealing device 2 according to the present invention will be described. As shown in FIG. 2, the pyrolysis furnace shaft seal device 2 includes a rotary seal plate 34 having an axial cylindrical portion 34 b that is connected to the rotary drum 11 side and extends in the axial direction with respect to the rotary drum 11, and the outlet hood 29 side. And a fixed seal plate 35 having a radial disk portion 35 a extending in the radial direction with respect to the rotating drum 11. Among these, the rotary drum 11 and the rotary seal plate 34 are rigidly connected via a thin cone 32 connected to the rotary drum 11 and concentric with the rotary drum 11, and a flange 33 connected to the tip of the thin cone 32. Has been. Further, the rotary seal plate 34 has an inclined disk portion 34 a that is inclined with respect to the fixed seal plate 35 so that the separation distance decreases radially outward. The inclined disk portion 34a is connected to the axial cylindrical portion 34b. Furthermore, since the fixed seal plate 35 is disposed away from the rotary seal plate 34, the rotation of the rotary drum 11 is not transmitted through the rotary seal plate 34.

  The pyrolysis furnace shaft sealing device 2 is disposed between the rotary seal plate 34 and the fixed seal plate 35 and is provided with an end face seal 36 slidably provided with respect to the inclined disk portion 34a of the rotary seal plate 34. And a radial seal disposed between the rotary seal plate 34 and the fixed seal plate 35 and radially outward from the end face seal 36, and slidably provided on the axial cylindrical portion 34b of the rotary seal plate 34. 37. Of these, the end face seal 36 and the radial seal 37 are both ring-shaped and are provided so as to be divided in the circumferential direction.

  Next, the end face seal 36 will be further described with reference to FIG. As shown in FIG. 3, the end face seal 36 has a ring shape and can be divided in the circumferential direction. The split seam portion 36 b of the end face seal 36 is spherically coupled to be combined in a ring shape, and the radius of the fixed seal plate 35. It is disposed between the directional disk portion 35 a and the inclined disk portion 34 a of the rotary seal plate 34. Incidentally, as shown in FIG. 2, the end face seal 36 has an inclined shape having an inclined portion 36c, and the end face seal 36 is made of a carbon seal material. A fixed pin 38 is attached to the fixed seal plate 35 on the end seal 36 side of the fixed seal plate 35. When the end face seal 36 is attached, the fixing pin 38 and the hole 36a corresponding to the fixing pin 38 included in the end face seal 36 are engaged, and thus the movement of the end face seal 36 in the circumferential direction is limited. . Further, a garter spring 39 is attached to the outer peripheral surface of the end face seal 36 in order to combine the end face seals 36 in a ring shape.

  Next, the radial seal 37 will be further described with reference to FIG. The radial seal 37 has a ring shape and can be divided in the circumferential direction as shown in FIG. 4, and the split seam portion 37b of the radial seal 37 is stepped and combined in a ring shape. As shown in FIG. 2, the radial seal 37 has a rectangular cross section, and the radial seal 37 is made of a carbon seal material. The fixed seal plate 35 has a sliding plate 40 attached to the end seal 36 side of the fixed seal plate 35 and a fixed pin 41 attached to the sliding plate 40. When the radial seal 37 is attached, the fixing pin 41 and the hole 37a corresponding to the fixing pin 41 included in the radial seal 37 are engaged, and thus the movement of the radial seal 37 in the circumferential direction is limited. . Further, in order to combine the radial seal 37 in a ring shape, a garter spring 42 is attached to the outer peripheral surface of the radial seal 37. Although not shown, an additional garter spring is provided on the lower half of the radial seal 37 below the horizontal plane including the central axis of the rotary drum 11 in order to lift the lower half of the radial seal 37. Is attached.

  In order to maintain the sealing performance by the radial seal 37, the fixed seal plate 35 is provided with a spring fixing plate 44. A spring 43 for pressing the radial seal 37 against the fixed seal plate 35 is attached to the tip of the spring fixed plate 44.

  The fixed seal plate 35 is provided with a load receiving mechanism 45. The load receiving mechanism 45 is disposed radially outward with respect to the rotary seal plate 34 in order to press the outermost peripheral portion 34d of the rotary seal plate 34 radially inward. The load receiving mechanism 45 includes an arm 48 connected to the fixed seal plate 35 and a roller 47 attached with the arm 48 as a central shaft body. By this roller 47, the outermost peripheral portion 34d of the rotary seal plate 34 is pressed radially inward.

  The fixed seal plate 35 is provided with a pressing mechanism 46. The pressing mechanism 46 is disposed radially outward with respect to the load receiving mechanism 45 in order to press the end 34 c of the rotary seal plate 34 toward the fixed seal plate 35 in the axial direction of the rotary drum 11. The pressing mechanism 46 has an arm 50 slidably attached to the fixed seal plate 35 in the axial direction of the rotary drum 11, a roller 49 attached using the arm 50 as a central shaft body, and the roller 49 as a rotary seal. And a spring 51 for pressing against the end 34c of the plate 34. By this roller 49, the end 34 c of the rotary seal plate 34 is pressed against the fixed seal plate 35 side.

  Next, the circumferential arrangement of the load receiving mechanism 45 and the pressing mechanism 46 will be described with reference to FIG. As shown in FIG. 5, a plurality of load receiving mechanisms 45 are provided in the circumferential direction with respect to the fixed seal plate 35, and a plurality of pressing mechanisms 46 are provided in the circumferential direction with respect to the fixed seal plate 35. The fixed seal plate 35 is not connected to the rotary seal plate 34 but is connected to the expansion joint 56 via the cooling single pipe 57 and is slidable in the axial direction of the rotary drum 11 (FIG. 2). reference). The fixed seal plate 35 is provided with a restraining mechanism 52 for restraining the rotation direction of the rotary drum 11. The restraint mechanism 52 is fixed to the stationary base 3 for installing the arm 53 connected to the fixed seal plate 35, the roller 54 attached with the arm 53 as a central shaft body, and the horizontal external thermal rotation pyrolysis furnace 1. The stationary plate 55 is provided. When the roller 54 is constrained by the stationary plate 55, the movement of the fixed seal plate 35 in the radial direction is constrained.

  In addition, as shown in FIG. 2, an expansion joint 56 is interposed between the outlet hood 29 and the fixed seal plate 35, and between the expansion joint 56 and the outlet hood 29 and between the expansion joint 56 and the fixed seal plate 35. The cooling single tubes 57 and 58 are provided respectively. Cooling fins 59 and 60 are attached to the outer peripheral surfaces of the cooling single tubes 57 and 58, respectively. A cylindrical support plate 61 extends from the outlet hood 29 on the radially inner side of the expansion joint 56. A heat insulating material 62 is inserted between the support plate 61 and the expansion joint 56. A cylindrical seal plate 63 is attached to the rotary seal plate 34 inside the support plate 61. A heat insulating material 64 is inserted between the seal plate 63 and the support plate 61. Further, a metal brush 65 is attached to the outer peripheral surface of the rotary drum 11 inside the support plate 61. A slight gap is provided between the tip of the metal brush 65 and the outer peripheral surface of the rotary drum 11.

  Further, in the vicinity of the portion of the rotating drum 11 where the tire 13 is attached and the portion of the rotating drum 11 where the pyrolysis furnace shaft seal device 2 is attached, the rotating drum 11 has a double cylindrical structure. A heat insulating material 66 is inserted between the double cylindrical structures.

  Further, as shown in FIG. 2, an inert gas injection device is provided on the surface opposite to the end face seal 36 of the fixed seal plate 35, radially outward from the end face seal 36 and radially inward from the radial seal 37. 90 is provided. The inert gas injection device 90 is connected to a pipe 91 for injecting an inert gas (such as nitrogen or combustible exhaust gas) into the intermediate chamber 94 between the end face seal 36 and the radial seal 37 and is connected to the pipe 91 for injection. And a pressure gauge 92 for measuring the pressure of the inert gas in the intermediate chamber 94.

Next, the operation of the present embodiment having such a configuration will be described.
First, the overall operation of the horizontal external heat rotary pyrolysis furnace 1 will be described. In FIG. 1, the waste 20 temporarily stored in the input hopper 21 is input into the rotary drum 11 by the input device 22. The rotating drum 11 is rotated by the driving device 19. The rotating drum 11 is heated by burners 28a, 28b, 28c provided at the lower part of the rotating drum 11 and in the lower part of the combustion chamber 27, and the inside of the rotating drum 11 is maintained at a high temperature of 500 ° C. to 600 ° C. The The waste 20 inside the rotary drum 11 is pyrolyzed into a pyrolysis gas 105 and a pyrolysis residue 106 mainly composed of non-volatile components, and at the same time, combustible exhaust gas is generated. The pyrolysis gas 105 is sent to the pyrolysis gas processing device via the outlet hood 29, while the pyrolysis residue 106 is sent to the residue cooling device via the outlet hood 29. The combustible exhaust gas is exhausted from the combustion chamber 27 to the outside. As described above, while the thermal decomposition of the waste 20 is performed inside the rotary drum 11, the rotary drum 11 is in a high temperature state of 500 ° C. to 600 ° C., so that the rotary drum 11 is thermally deformed due to thermal expansion.

  During this time, the rotation of the rotating drum 11 causes the thin cone 32 connected to the rotating drum 11 together with the rotating drum 11, the flange 33 connected to the tip of the thin cone 32, and the rotary seal plate 34 connected to the flange 33. And the seal plate 63 attached to the rotary seal plate 34 rotate.

  Next, referring to FIGS. 6 and 7, the sealing action by the end face seal 36 during the rotation and heating of the rotary drum 11 will be described. As described above, the end face seal 36 is engaged with the fixed pin 38 attached to the fixed seal plate 35, and the rotation is limited. As a result, the end face seal 36 is restrained from moving in the circumferential direction with respect to the radial disk portion 35 a of the fixed seal plate 35. On the other hand, the end face seal 36 is slidable in the radial direction with respect to the radial disk portion 35 a of the fixed seal plate 35 in the range of the gap between the fixing pin 38 and the hole 36 a of the end face seal 36. The end face seal 36 is slidable in the circumferential direction and the radial direction with respect to the inclined portion 34 a of the rotary seal plate 34.

  Further, since the end face seal 36 is sandwiched between the inclined portion 34a of the rotary seal plate 34 and the fixed seal plate 35, a pressing force 96 from the rotary seal 34 side to the end seal 36 toward the fixed seal plate 35 side is generated. It is working. Since this pressing force 96 acts on the end face seal 36 via the inclined portion 34 a of the rotary seal plate 34, a radially inward component force 97 acts on the end face seal 36. Further, since the garter spring 39 is attached to the outer peripheral surface of the end face seal 36, a force for tightening the end face seal 36 inward in the radial direction acts. These forces are automatically adjusted in accordance with thermal deformation, and the end face seal 36 is formed in a ring shape with the divided seam portion 36b held tightly. For this reason, the sealing performance of the end face seal 36 is maintained.

  Further, as shown in FIG. 2, by providing the fixed seal plate 35 with the load receiving mechanism 45, the outermost peripheral portion 34d of the rotary seal plate 34 is pressed radially inward. Further, since the pressing mechanism 46 is provided on the fixed seal plate 35, the end 34c of the rotary seal plate 34 is pressed against the fixed seal plate 35 side. For this reason, the sealing performance of the end face seal 36 is stably maintained. Further, as shown in FIG. 5, since a plurality of load receiving mechanisms 45 and pressing mechanisms 46 are provided in the circumferential direction of the pyrolysis furnace shaft sealing device 2, the sealing of the end face seal 36 is equally performed in the circumferential direction. Performance is maintained stably.

  Next, the sealing action by the radial seal 37 during rotation and heating of the rotary drum 11 will be described with reference to FIG. The radial seal 37 is attached by being engaged with a fixing pin 41 attached to the fixed seal plate 35 via a sliding plate 40. Thereby, the radial seal 37 is restrained from moving in the circumferential direction with respect to the radial disk portion 35 a of the fixed seal plate 35. On the other hand, in the radial direction, the radial seal 37 is slidable with respect to the radial disk portion 35 a of the fixed seal plate 35 in the range of the gap between the fixed pin 41 and the hole 37 a of the radial seal 37. ing. The radial seal 37 is slidable in the axial direction with respect to the axial cylindrical portion 34 b of the rotary seal plate 34.

  Moreover, since the garter spring 42 is attached to the outer peripheral surface of the radial seal 37, the force which clamps the radial seal 37 to radial inside acts. This force is automatically adjusted according to thermal deformation, and the radial seal 37 is formed in a ring shape with the divided seam portion 37b held tightly. For this reason, the radial seal 37 maintains the sealing performance with respect to the axial cylindrical portion 34 b of the rotary seal plate 34.

  Further, the radial seal 37 is divided into upper and lower parts through a horizontal plane including the central axis of the rotary drum 11, and the upper half peripheral part and the lower half peripheral part are both held by a garter spring 42. An additional garter spring is attached to the lower half circumferential portion of the radial seal 37 in order to lift the lower half circumferential portion of the radial seal 37. For this reason, when the upper half circumference part and the lower half circumference part of the radial seal 37 are compared, even if the same pressure is applied by the garter spring 42, the surface pressure of the lower half circumference part is lowered due to gravity. Therefore, by adding a garter spring that lifts the lower half peripheral portion of the radial seal 37, it is possible to suppress the force from being applied in the direction in which the radially-separated radial seal 37 is separated and to make the surface pressure uniform. .

  Further, the radial seal 37 is pressed against the fixed seal plate 35 by a spring 43 provided at the tip of a spring fixed plate 44 provided on the fixed seal plate 35. This force is automatically adjusted according to thermal deformation, and the radial seal 37 maintains the sealing performance with respect to the fixed seal plate 35. Since a plurality of springs 43 are provided in the circumferential direction of the pyrolysis furnace shaft seal device 2 together with the spring fixing plate 44, it is possible to apply a pressing force equally in the circumferential direction of the radial seal 37.

  Next, the operation of the expansion joint 56 during rotation and heating of the rotary drum 11 will be described with reference to FIG. The expansion joint 56 flexibly connects the outlet hood 29 and the fixed seal plate 35 to absorb thermal expansion and contraction of the rotary drum 11. Thereby, compared with the case where the outlet hood 29 and the fixed seal plate 35 are firmly fixed, the thermal cracking force is not applied to the thermal cracking furnace shaft sealing device 2 from the rotary drum 11 side, and the thermal cracking furnace shaft The sealing device 2 is held structurally stably. In addition, since the fixed seal plate 35 is provided with the restraining mechanism 52, the movement in the circumferential direction is restrained. On the other hand, the fixed seal plate 35 is not connected to the rotary seal plate 34 but is connected to the expansion / contraction joint 56 via the cooling single pipe 57, and is slidable in the axial direction. For this reason, the fixed seal plate 35 can follow the expansion and contraction of the expansion joint 56 in the axial direction.

  Next, the operation of the cooling single tubes 57 and 58 provided on both sides of the expansion joint 56 during rotation and heating of the rotary drum 11 will be described. By the way, as described above, the cooling fins 59 and 60 are attached to the outer peripheral surfaces of the cooling single tubes 57 and 58 in the cooling single tubes 57 and 58 provided on both sides of the expansion joint 56. For this reason, the heat transmitted from the rotating drum 11 to the cooling single tubes 57 and 58 is efficiently transmitted to the outside air via the cooling fins 59 and 60. Thereby, the expansion joint 56 is suppressed from being heated and the flexibility of the expansion joint 56 is maintained. Further, the expansion joint 56 can be prevented from being burned out.

  During this time, since the heat insulating material 62 is inserted between the cylindrical support plate 61 attached to the outlet hood 29 and the expansion joint 56, it is possible to prevent heat from being transmitted from the rotary drum 11 to the expansion joint 56. Thereby, the expansion joint 56 is suppressed from being heated and the flexibility of the expansion joint 56 is maintained. Further, the expansion joint 56 can be prevented from being burned out.

  During this time, a heat insulating material 64 is inserted between the seal plate 63 fixed to the rotary seal plate 34 and the support plate 61. Further, a metal brush 65 is attached inside the support plate 61 toward the outer peripheral surface of the rotary drum 11. For this reason, carbon dust is prevented from entering the end face seal 36 side.

  By the way, since the end face seal 36 and the radial seal 37 each have a sliding portion as described above, it is assumed that the sealing performance is deteriorated due to contamination of foreign matters or abnormal wear. In the present embodiment, the inert gas injection device 90 injects an inert gas (such as nitrogen or combustible exhaust gas) into the intermediate chamber 94 between the end face seal and the radial carbon seal. The atmosphere is filled with inert gas. Thereby, even when the sealing performance of the end face seal 36 or the radial seal 37 is deteriorated, the inflow of outside air into the rotary drum 11 can be blocked.

  As described above, according to the present embodiment, even when the rotating drum 11 heated to a high temperature is largely thermally deformed due to thermal expansion, it can be automatically adjusted according to the heat deformation. An excessive force due to thermal expansion does not act on the seal 37. For this reason, the end face seal 36 and the radial seal 37 can maintain the sealing performance following the thermal deformation caused by the thermal expansion of the rotary drum 11. Thereby, the sealing performance of the pyrolysis furnace shaft sealing device 2 can be stably maintained for a long period of time.

  Further, according to the present embodiment, since the rotary seal plate 34 and the fixed seal plate 35 are double-sealed by the end face seal 36 and the radial seal 37, the sealing performance of one of the seals is poor. Even in this case, the gap between the rotary seal plate 34 and the fixed seal plate 35 is sealed by the other seal. For this reason, the inflow of outside air to the inside of the rotating drum 11 can be blocked.

  Further, according to the present embodiment, carbon dust can be prevented from entering the end face seal 36 side. For this reason, the pyrolysis furnace shaft sealing device 2 can continue the waste processing stably for a long period of time.

Second Embodiment Next, referring to FIG. 8, a second embodiment of the thermal cracking furnace shaft sealing device according to the present invention will be described. Here, FIG. 8 is a detailed view of part A of the pyrolysis furnace shaft sealing device.
In the second embodiment shown in FIG. 8, the shape of the rotary seal plate and the shape of the end face seal are different, and other configurations are substantially the same as those of the first embodiment shown in FIGS. It is.

  In the present embodiment, the same parts as those of the first embodiment shown in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 8, the pyrolysis furnace shaft seal device 2 includes a rotary seal plate 67 having an axial cylindrical portion 67 b connected to the rotary drum 11 side and extending in the axial direction with respect to the rotary drum 11, and the outlet hood 29 side. And a fixed seal plate 35 having a radial disk portion 35 a extending in the radial direction with respect to the rotating drum 11. Among these, the rotary drum 11 and the rotary seal plate 67 are rigidly connected via the thin cone 32 connected to the rotary drum 11 and concentric with the rotary drum 11, and the flange 33 connected to the tip of the thin cone 32. Has been. The rotary seal plate 67 has a rotation-side radial disk portion 67a provided in parallel to the radial disk portion 35a of the fixed seal plate 35. The rotation-side radial disk portion 67a is connected to the axial cylindrical portion 67b. Further, since the fixed seal plate 35 is disposed away from the rotary seal plate 34, the rotation of the rotary drum 11 is not transmitted through the rotary seal plate 67.

  The pyrolysis furnace shaft seal device 2 is disposed between the rotary seal plate 67 and the fixed seal plate 35, and is provided slidably with respect to the rotation-side radial disk portion 67a of the rotary seal plate 67. Between the end face seal 68, the rotary seal plate 67, and the fixed seal plate 35, it is disposed radially outward from the end face seal 68, and is slidably provided on the axial cylindrical portion 67b of the rotary seal plate 67. And a radial seal 37. Of these, the end face seal 68 and the radial seal 37 are both ring-shaped and are provided so as to be divided in the circumferential direction.

  The end face seal 68 has a ring shape and can be divided in the circumferential direction. The split seam portion 68b of the end face seal 68 is combined in a spherical shape and combined in a ring shape. 35a and the rotary side radial disk portion 67a of the rotary seal plate 67. As shown in FIG. 8, the end face seal 68 has a rectangular cross section, and the end face seal 68 is made of a carbon seal material. A fixed pin 38 is attached to the fixed seal plate 35 on the end seal 68 side of the fixed seal plate 35. When the end face seal 68 is attached, the fixing pin 38 and the hole 68a corresponding to the fixing pin 38 included in the end face seal 68 are engaged, and thus the movement of the end face seal 68 in the circumferential direction is limited. . Further, a garter spring 69 is attached to the outer peripheral surface of the end face seal 68 in order to combine the end face seal 68 in a ring shape. Although not shown, a garter spring is attached to the end face seal 68 below the horizontal plane including the central axis of the rotary drum 11 in order to lift the lower half circumference of the end face seal 68.

  The fixed seal plate 35 is provided with a load receiving mechanism 45. The load receiving mechanism 45 is disposed radially outward with respect to the rotary seal plate 67 in order to press the outermost peripheral portion 67d of the rotary seal plate 67 radially inward. The load receiving mechanism 45 includes an arm 48 connected to the fixed seal plate 35 and a roller 47 attached with the arm 48 as a central shaft body. By this roller 47, the outermost peripheral portion 68d of the rotary seal plate 68 is pressed inward in the radial direction.

  The fixed seal plate 35 is provided with a pressing mechanism 46. The pressing mechanism 46 is disposed radially outward with respect to the load receiving mechanism 45 in order to press the end 68 c of the rotary seal plate 68 toward the fixed seal plate 35 in the axial direction of the rotary drum 11. The pressing mechanism 46 has an arm 50 slidably attached to the fixed seal plate 35 in the axial direction of the rotary drum 11, a roller 49 attached using the arm 50 as a central shaft body, and the roller 49 as a rotary seal. And a spring 51 for pressing against an end 68 c of the plate 68. By this roller 49, the end portion 68c of the rotary seal plate 68 is pressed against the fixed seal plate 35 side.

  According to the present embodiment, as shown in FIG. 8, by rotation of the rotating drum 11, a thin cone 32 connected to the rotating drum 11 together with the rotating drum 11 and a flange 33 connected to the tip of the thin cone 32. Then, the rotary seal plate 67 connected to the flange 33 and the seal plate 63 attached to the rotary seal plate 34 rotate.

  Further, the end face seal 68 during the rotation and heating of the rotary drum 11 is engaged with the fixed pin 38 attached to the fixed seal plate 35, and the rotation is restricted. As a result, the end face seal 68 is restrained from moving in the circumferential direction with respect to the radial disk portion 35 a of the fixed seal plate 35. On the other hand, the end face seal 68 is slidable in the radial direction with respect to the radial disk portion 35 a of the fixed seal plate 35 in the range of the gap between the fixing pin 38 and the hole 68 a of the end face seal 68. The end face seal 68 is slidable in the circumferential direction and the radial direction with respect to the rotation-side radial disk portion 67a of the rotation seal plate 67.

  Further, the end face seal 68 is sandwiched between the rotation-side radial disk portion 67 a of the rotation seal plate 67 and the fixed seal plate 35, so that the end seal 68 is fixed to the end seal 68 from the rotation seal plate 67 side. The pressing force to the side is acting. Further, since the garter spring 69 is attached to the outer peripheral surface of the end face seal 68, a force for tightening the end face seal 68 radially inward acts. These forces are automatically adjusted according to thermal deformation, and the end face seal 68 is formed in a ring shape with the divided seam portion 68b held closely. For this reason, the sealing performance of the end face seal 68 is maintained.

  Further, the end 67 c of the rotary seal plate 67 is pressed against the fixed seal plate 35 side by the pressing mechanism 46. Thereby, the sealing performance of the end face seal 68 is stably maintained. In addition, since a plurality of pressing mechanisms 46 are provided in the circumferential direction of the pyrolysis furnace shaft sealing device 2, they are equally pressed over the circumferential direction of the end face seal 68. As a result, the sealing performance of the end face seal 68 is stably maintained equally over the circumferential direction of the end face seal 68.

Third Embodiment Next, referring to FIGS. 9 and 10, a third embodiment of the thermal cracking furnace shaft sealing device according to the present invention will be described. Here, FIG. 9 is a detailed view of part A of the pyrolysis furnace shaft sealing device, and FIG. 10 is a view in the direction C of the pyrolysis furnace shaft sealing device.
The third embodiment shown in FIG. 9 and FIG. 10 uses a packing seal in place of the radial seal in the first embodiment, and the other configuration is the first embodiment shown in FIG. 1 to FIG. This is substantially the same as the embodiment.

  In the present embodiment, the same parts as those in the first embodiment shown in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 9, the pyrolysis furnace shaft seal device 2 includes a rotary seal plate 70 connected to the rotary drum 11 side and a radial circle provided on the outlet hood 29 side and extending in the radial direction with respect to the rotary drum 11. And a fixed seal plate 71 having a plate portion 71a. Among these, the rotary drum 11 and the rotary seal plate 70 are rigidly connected via a thin cone 32 connected to the rotary drum 11 and concentric with the rotary drum 11, and a flange 33 connected to the tip of the thin cone 32. Has been. Further, the rotary seal plate 70 has an inclined disc portion 70 a that is inclined with respect to the fixed seal plate 71 so that the separation distance decreases radially outward. Furthermore, since the fixed seal plate 71 is disposed away from the rotary seal plate 70, the rotation of the rotary drum 11 is not transmitted through the rotary seal plate 70.

  The pyrolysis furnace shaft seal device 2 is disposed between the rotary seal plate 70 and the fixed seal plate 71 and is provided with an end face seal 72 that is slidable with respect to the inclined disk portion 70 a of the rotary seal plate 70. And a packing seal 73 disposed between the rotary seal plate 70 and the fixed seal plate 71 and radially outward from the end face seal 72. Of these, the end face seal 72 has a ring shape and is provided so as to be divided in the circumferential direction.

  Further, the end face seal 72 has a ring shape and can be divided in the circumferential direction. The split seam portion 72b of the end face seal 72 is spherically coupled to be combined in a ring shape, and the radial disk portion 71a of the fixed seal plate 71. And the inclined disk portion 70a of the rotary seal plate 70. The cross-sectional shape of the end surface seal 72 is an inclined type having an inclined portion 72a, and the end surface seal 72 is made of a carbon seal material. The fixed seal plate 71 has a fixed pin 74 attached to the end seal 72 side of the fixed seal plate 71. When attaching the end face seal 72, the fixing pin 74 and the hole 72a corresponding to the fixing pin 74 included in the end face seal 72 are engaged, and thus the movement of the end face seal 72 in the circumferential direction is limited. . In order to prevent the end face seal 72 from rotating in the circumferential direction, the end face seal 72 is attached by engaging the fixing pin 74 with a hole 74 a corresponding to the fixing pin 74 included in the end face seal 72. . Further, a garter spring 75 is attached to the outer peripheral surface of the end face seal 72 in order to combine the end face seal 72 in a ring shape.

  Next, the packing seal 73 during the rotation and heating of the rotary drum 11 will be further described. The packing seal 73 forms a U-shaped lip seal, and the packing seal 73 is made of heat-resistant rubber (for example, fluorine rubber). The packing seal 73 is fixed by being adhered to either the rotary seal plate 70 or the fixed seal plate 71. A lip seal is formed on the other non-bonded side. The packing seal 73 includes an inner lip, an outer lip, and a side lip, but any lip may be used. Further, the packing seal 73 may be structured such that it can be attached and detached and parts can be easily replaced.

  The fixed seal plate 71 is provided with a load receiving mechanism 76. The load receiving mechanism 76 is disposed radially outward with respect to the rotary seal plate 70 in order to press the outermost peripheral portion 70d of the rotary seal plate 70 radially inward. The load receiving mechanism 76 includes an arm 79 connected to the fixed seal plate 71 and a roller 78 attached with the arm 79 as a central shaft body. By this roller 78, the outermost peripheral portion 70d of the rotary seal plate 70 is pressed inward in the radial direction.

  The fixed seal plate 71 is provided with a pressing mechanism 77. The pressing mechanism 77 is disposed radially outward with respect to the load receiving mechanism 76 in order to press the end portion 70 c of the rotary seal plate 70 toward the fixed seal plate 71 in the axial direction of the rotary drum 11. The pressing mechanism 77 includes an arm 81 slidably attached to the fixed seal plate 71 in the axial direction of the rotary drum 11, a roller 80 attached using the arm 81 as a central shaft body, and a roller 80 that rotationally seals the roller 80. And a spring 82 for pressing against the end portion 70c of the plate 70. By this roller 80, the end portion 70c of the rotary seal plate 70 is pressed against the fixed seal plate 71 side.

  Next, the circumferential arrangement of the load receiving mechanism 76 and the pressing mechanism 77 will be described with reference to FIG. As shown in FIG. 10, a plurality of load receiving mechanisms 76 are provided in the circumferential direction with respect to the fixed seal plate 71, and a plurality of pressing mechanisms 77 are provided in the circumferential direction with respect to the fixed seal plate 71. Further, the fixed seal plate 71 is connected to the expansion joint 56 via the cooling single pipe 57 without being connected to the rotary seal plate 70, and is slidable in the axial direction of the rotary drum 11 (FIG. 9). reference). The fixed seal plate 71 is provided with a restraining mechanism 83 for restraining the rotation direction of the rotary drum 11. The restraining mechanism 83 is fixed to the stationary base 3 for installing the arm 84 connected to the fixed seal plate 71, the roller 85 attached with the arm 84 as a central shaft body, and the horizontal external thermal rotation pyrolysis furnace 1. The stationary plate 86 is provided. When the roller 85 is restrained by the stationary plate 95, the movement of the fixed seal plate 71 in the radial direction is restrained.

  According to the present embodiment, the rotation of the rotating drum 11 and the rotating drum 11 together with the thin cone 32 connected to the rotating drum 11, the flange 33 connected to the tip of the thin cone 32, and the flange 33 are connected. The rotary seal plate 70 and the seal plate 63 attached to the rotary seal plate 34 rotate.

  Further, the end face seal 72 during the rotation and heating of the rotary drum 11 engages with the fixing pin 74 attached to the fixed seal plate 71, and the rotation is restricted. As a result, the end face seal 72 is restrained from moving in the circumferential direction with respect to the radial disk portion 71 a of the fixed seal plate 71. On the other hand, the end face seal 72 is slidable in the radial direction with respect to the radial disk portion 71 a of the fixed seal plate 71 in the range of the gap between the fixed pin 74 and the hole 72 a of the end face seal 72. Further, the end face seal 72 is slidable in the circumferential direction and the radial direction with respect to the inclined portion 70 a of the rotary seal plate 70.

  Further, the end face seal 72 is sandwiched between the inclined portion 70a of the rotary seal plate 70 and the fixed seal plate 71, so that the pressing force from the side of the rotary seal plate 70 to the end seal 72 toward the fixed seal plate 71 side. 96 is working. Since this pressing force 96 acts on the end face seal 72 via the inclined portion 70 a of the rotary seal plate 70, a radially inward component force 97 acts on the end face seal 72. Further, since the garter spring 75 is attached to the outer peripheral surface of the end face seal 72, a force that tightens the end face seal 72 inward in the radial direction acts. These forces are automatically adjusted in accordance with thermal deformation, and the end face seal 72 is formed in a ring shape with the divided seam portion 72b held closely. For this reason, the sealing performance of the end face seal 72 is maintained.

  Further, as shown in FIG. 8, the end portion 70 c of the rotary seal plate 70 is pressed against the fixed seal plate 71 side by a pressing mechanism 77. Thereby, the sealing performance of the end face seal 72 and the packing seal 73 is stably maintained. In addition, since a plurality of pressing mechanisms 77 are provided in the circumferential direction of the pyrolysis furnace shaft seal device 2, they are equally pressed over the circumferential direction of the end face seal 72 and the packing seal 73. Thereby, the sealing performance of the end surface seal 72 and the packing seal 73 is stably maintained equally over the circumferential direction of the end surface seal 72 and the packing seal 73.

  Further, as shown in FIG. 8, the packing seal 73 is bonded and fixed to one of the rotary seal plate 70 and the fixed seal plate 71, so that the other non-bonded side is slidable. . Further, heat-resistant rubber is used as the material for the packing seal 73 and a U-shaped lip seal is formed. Therefore, the seal performance of the packing seal 73 is maintained by automatically adjusting according to thermal deformation. Furthermore, the packing seal 73 has few contact surfaces with the rotary seal plate 70 or the fixed seal plate 71, and the contact surface pressure is low. For this reason, the torque for rotating the rotating drum 11 can be made relatively low.

  Further, as shown in FIG. 8, the expansion joint 56 during the rotation and heating of the rotary drum 11 flexibly connects the outlet hood 29 and the fixed seal plate 71 to absorb the thermal expansion and contraction of the rotary drum 11. Thereby, compared with the case where the outlet hood 29 and the fixed seal plate 71 are firmly fixed, the thermal cracking power is not applied to the pyrolysis furnace shaft seal device 2 from the rotary drum 11 side. The device 2 is held structurally stable. Further, since the fixed seal plate 71 is provided with the restraining mechanism 83, the movement in the circumferential direction is restrained. On the other hand, the fixed seal plate 71 is slidable in the axial direction because it is connected to the expansion joint 56 via the cooling single pipe 57 without being connected to the rotary seal plate 70. For this reason, the fixed seal plate 71 can follow the expansion and contraction of the expansion joint 56 in the axial direction.

Fourth Embodiment Next, referring to FIG. 11, a fourth embodiment of the thermal cracking furnace shaft sealing device according to the present invention will be described. Here, FIG. 11 is a detailed view of part A of the pyrolysis furnace shaft sealing device.
The fourth embodiment shown in FIG. 11 is different in the shape of the rotary seal plate and the shape of the end face seal, and the other configurations are substantially the same as those in the third embodiment shown in FIGS. It is.

  In this embodiment, the same parts as those in the third embodiment shown in FIGS. 9 and 10 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 11, the pyrolysis furnace shaft seal device 2 includes a rotary seal plate 86 connected to the rotary drum 11 side, and a radial disk provided on the outlet hood 29 side and extending in the radial direction with respect to the rotary drum 11. And a fixed seal plate 71 having a portion 71a. Among these, the rotary drum 11 and the rotary seal plate 86 are rigidly connected via the thin cone 32 connected to the rotary drum 11 and concentric with the rotary drum 11, and the flange 33 connected to the tip of the thin cone 32. Has been. The rotation seal plate 86 has a rotation-side radial disk portion 86 a provided in parallel to the radial disk portion 71 a of the fixed seal plate 71. Furthermore, since the fixed seal plate 71 is disposed away from the rotary seal plate 86, the rotation of the rotary drum 11 is not transmitted through the rotary seal plate 86.

  The pyrolysis furnace shaft seal device 2 is disposed between the rotary seal plate 86 and the fixed seal plate 71, and is slidable with respect to the rotation-side radial disk portion 86a of the rotary seal plate 86. An end face seal 87 and a packing seal 73 disposed between the rotary seal plate 86 and the fixed seal plate 71 and radially outward from the end face seal 87 are provided. Of these, the end face seal 87 has a ring shape and is provided so as to be divided in the circumferential direction.

  Further, the end face seal 87 has a ring shape and can be divided in the circumferential direction. The split seam portion 87b of the end face seal 87 is spherically coupled and combined into a ring shape, and the radial direction disc portion 71a of the fixed seal plate 71. And the rotation-side radial disk portion 86a of the rotary seal plate 86. The cross-sectional shape of the end face seal 87 is rectangular, and the end face seal 87 is made of a carbon seal material. A fixed pin 89 is attached to the fixed seal plate 71 on the end seal 87 side of the fixed seal plate 71. When the end face seal 87 is attached, the fixing pin 89 and the hole 87a corresponding to the fixing pin 89 included in the end face seal 87 are engaged, and thus the movement of the end face seal 87 in the circumferential direction is limited. . Furthermore, a garter spring 88 is attached to the outer peripheral surface of the end face seal 87 in order to combine the end face seal 87 in a ring shape. Although not shown, a garter spring is attached to the end face seal 87 below the horizontal plane including the central axis of the rotary drum 11 in order to lift the lower half circumference of the end face seal 87.

  The fixed seal plate 71 is provided with a load receiving mechanism 76. The load receiving mechanism 76 is disposed radially outward with respect to the rotary seal plate 86 in order to press the outermost peripheral portion 86d of the rotary seal plate 86 radially inward. The load receiving mechanism 76 includes an arm 79 connected to the fixed seal plate 71 and a roller 78 attached with the arm 79 as a central shaft body. By this roller 78, the outermost peripheral portion 86d of the rotary seal plate 86 is pressed radially inward.

  The fixed seal plate 71 is provided with a pressing mechanism 77. The pressing mechanism 77 is disposed radially outward with respect to the load receiving mechanism 76 in order to press the end portion 86 c of the rotary seal plate 86 toward the fixed seal plate 71 in the axial direction of the rotary drum 11. The pressing mechanism 77 includes an arm 81 slidably attached to the fixed seal plate 71 in the axial direction of the rotary drum 11, a roller 80 attached using the arm 81 as a central shaft body, and a roller 80 that rotationally seals the roller 80. And a spring 82 for pressing against the end 86c of the plate 86. By this roller 80, the end portion 86c of the rotary seal plate 86 is pressed against the fixed seal plate 71 side.

  According to the present embodiment, as shown in FIG. 11, by rotation of the rotating drum 11, a thin cone 32 connected to the rotating drum 11 together with the rotating drum 11 and a flange 33 connected to the tip of the thin cone 32. Then, the rotary seal plate 86 connected to the flange 33 and the seal plate 63 attached to the rotary seal plate 34 rotate.

  Further, the end face seal 87 during the rotation and heating of the rotary drum 11 is engaged with the fixed pin 89 attached to the fixed seal plate 71, and the rotation is restricted. Thereby, the end face seal 87 is restrained from moving in the circumferential direction with respect to the radial direction disc portion 71 a of the fixed seal plate 71. On the other hand, the end face seal 87 is slidable in the radial direction with respect to the radial disk portion 71 a of the fixed seal plate 71 in the range of the gap between the fixed pin 89 and the hole 87 a of the end face seal 87. The end face seal 87 is slidable in the circumferential direction and the radial direction with respect to the rotation-side radial disk portion 86 a of the rotation seal plate 86.

  Further, the end face seal 87 is sandwiched between the rotation side radial disk portion 86 a of the rotation seal plate 86 and the fixed seal plate 71, so that the end seal 87 from the rotation seal plate 86 side is fixed to the end seal 87. The pressing force to the side is acting. Further, since the garter spring 88 is attached to the outer peripheral surface of the end face seal 87, a force for tightening the end face seal 87 radially inward acts. These forces are automatically adjusted according to thermal deformation, and the end face seal 87 is formed in a ring shape with the split seam portion 87b held in close contact. For this reason, the sealing performance of the end face seal 87 is maintained.

  Further, the end 86 c of the rotary seal plate 86 is pressed against the fixed seal plate 71 by the pressing mechanism 77. Thereby, the sealing performance of the end face seal 87 and the packing seal 73 is stably maintained. In addition, since a plurality of pressing mechanisms 77 are provided in the circumferential direction of the pyrolysis furnace shaft sealing device 2, they are equally pressed over the circumferential direction of the end face seal 87 and the packing seal 73. Thereby, the sealing performance of the end face seal 87 and the packing seal 73 is stably maintained equally over the circumferential direction of the end face seal 87 and the packing seal 73.

Fifth Embodiment Next, referring to FIG. 12, a fifth embodiment of the thermal cracking furnace shaft sealing device according to the present invention will be described. Here, FIG. 12 is a detailed view of part A of the pyrolysis furnace shaft sealing device.
The fifth embodiment shown in FIG. 12 is provided with a cleaning port instead of the inert gas injection device in the third embodiment, and the other configuration is the third embodiment shown in FIG. 9 and FIG. This is substantially the same as the embodiment.

  In this embodiment, the same parts as those in the third embodiment shown in FIGS. 9 and 10 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 12, a cleaning port 93 is provided on the surface opposite to the end seal 72 of the fixed seal plate 71, radially outward from the end seal 72 and radially inward from the packing seal 73. Yes. The cleaning port 93 is connected to an intermediate chamber 94 between the end face seal 72 and the packing seal 73. A plurality of cleaning ports 93 are provided in the circumferential direction with respect to the fixed seal plate 71.

  It is assumed that carbon accumulates in the intermediate chamber 94 due to long-term operation. When the amount of carbon deposited in the intermediate chamber 94 increases, the seal performance of the end face seal 72 or the packing seal 73 and the fixed seal plate 71 or the rotary seal plate 70 is eroded and the sealing performance of the end face seal 72 or the packing seal 73 is lowered. There is a possibility to make it.

  According to the present embodiment, as shown in FIG. 12, the carbon deposited in the intermediate chamber 94 can be removed by opening the cleaning port 93. For this reason, carbon is not digged into the seal surface between the end face seal 72 or the packing seal 73 and the fixed seal plate 71 or the rotary seal plate 70, and the sealing performance of the end face seal 72 or the packing seal 73 is prevented from being deteriorated. can do.

Sixth Embodiment Next, a sixth embodiment of the thermal cracking furnace shaft sealing device according to the present invention will be described with reference to FIGS. 13 and 14. FIG. Here, FIG. 13 is a detailed view of part A of the pyrolysis furnace shaft sealing device, and FIG. 14 is a view in the direction of arrow D of the pyrolysis furnace shaft sealing device.
The sixth embodiment shown in FIG. 13 and FIG. 14 is different from the first embodiment in the shape of the rotary seal plate and uses an end face seal instead of a radial seal. This is substantially the same as the first embodiment shown in FIGS.

  In the present embodiment, the same parts as those of the first embodiment shown in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 13, the pyrolysis furnace shaft sealing device 2 is connected to the rotary drum 11 side and provided on the rotary seal plate 201 having an inclined body 201 a having an inclined surface and the outlet hood 29 side. 11, fixed seal plates 202, 203 having a pair of radial disk portions 202a, 203a extending in the radial direction. Among them, the rotary drum 11 and the rotary seal plate 201 are rigidly connected via a thin cone 32 connected to the rotary drum 11 and concentric with the rotary drum 11, and a flange 33 connected to the tip of the thin cone 32. Has been. In addition, the inclined body 201 a of the rotary seal plate 201 has an inclined disc portion 201 b that is inclined so that a separation distance decreases radially outward with respect to the fixed seal plate 202 and a radius with respect to the fixed seal plate 203. And an inclined disk portion 201c that is inclined so that the separation distance becomes smaller outward in the direction. The inclined disc portion 201b is provided on the opposite side of the inclined disc portion 201c with respect to the inclined body 201a. Furthermore, since the fixed seal plates 202 and 203 are disposed apart from the rotary seal plate 201, the rotation of the rotary drum 11 is not transmitted through the rotary seal plate 201.

  In addition, the pyrolysis furnace shaft sealing device 2 includes an inclined body of one radial disk portion 202a of the fixed seal plates 202 and 203 and the rotary seal plate 201 between the fixed seal plates 202 and 203 and the rotary seal plate 201. A first end face seal 204 is provided between the inclined disk portion 201b of 201a. Further, a second end face seal 205 is provided between the other radial disk portion 203 a and the inclined disk portion 201 c of the inclined body 201 a of the rotary seal plate 201. Among these, the first end face seal 204 is provided slidably with respect to the inclined disc portion 201b of the rotary seal plate 201, and the second end face seal 205 is provided with respect to the inclined disc portion 201c of the rotary seal plate 201. It is slidably provided. The first end face seal 204 and the second end face seal 205 are both ring-shaped and are provided so as to be divided in the circumferential direction.

  Further, the end face seals 204 and 205 have a ring shape and can be divided in the circumferential direction, and the split joint portions 204b and 205b of the end face seals 204 and 205 are spherically combined and combined in a ring shape. By the way, as shown in FIG. 13, the cross-sectional shapes of the end surface seals 204 and 205 are inclined types having inclined portions 204c and 205c, and the end surface seals 204 and 205 are made of a carbon seal material. Further, fixed pins 206 and 207 are attached to the fixed seal plates 202 and 203 on the side of the end seals 204 and 205 of the fixed seal plates 202 and 203, respectively. When attaching the end face seals 204, 205, the fixing pins 206, 207 and the holes 204a, 205a corresponding to the fixing pins 206, 207 included in the end face seals 204, 205 are engaged, and thus the end face seal 204 is engaged. , 205 is restricted from moving in the circumferential direction. Further, in order to combine the end face seals 204 and 205 in a ring shape, garter springs 208 and 209 are attached to the outer peripheral surfaces of the end face seals 204 and 205.

  The fixed seal plate 203 is provided with a load receiving mechanism 210. The load receiving mechanism 210 is disposed radially outward with respect to the rotary seal plate 201 in order to press the outermost peripheral portion 201d of the rotary seal plate 201 radially inward. The load receiving mechanism 210 is slidable in the axial direction of the rotary drum 11 with respect to the arm 213 connected to the fixed seal plate 203, a roller 212 attached with the arm 213 as a central shaft body, and the fixed seal plate 202. And an attached slide mechanism 217. By this roller 212, the outermost peripheral part 201d of the rotary seal plate 201 is pressed radially inward.

  The fixed seal plate 203 is provided with a pressing mechanism 211. The pressing mechanism 211 is disposed radially outward with respect to the load receiving mechanism 210 in order to press the fixed seal plate 203 toward the fixed seal plate 202 in the axial direction of the rotary drum 11. The pressing mechanism 211 includes an arm 214 connected to the fixed seal plate 203, a spring 215 for pressing the fixed seal plate 203 against the fixed seal plate 202, and slides in the axial direction of the rotary drum 11 with respect to the fixed seal plate 202. And a slide mechanism 216 attached freely. As a result, the fixed seal plate 203 is pressed against the fixed seal plate 202 side.

  Further, the circumferential arrangement of the load receiving mechanism 210 and the pressing mechanism 211 will be described with reference to FIG. As shown in FIG. 14, a plurality of load receiving mechanisms 210 are provided in the circumferential direction with respect to the fixed seal plate 203, and a plurality of pressing mechanisms 211 are provided in the circumferential direction with respect to the fixed seal plate 203. The fixed seal plates 202 and 203 are not connected to the rotary seal plate 201 but are connected to the expansion joint 56 via the cooling single pipe 57 and are slidable in the axial direction of the rotary drum 11 ( (See FIG. 13). The fixed seal plate 203 is provided with a restraining mechanism 219 for restraining the rotation direction of the rotary drum 11. The restraining mechanism 219 is fixed to the stationary base 3 for installing the arm 221 connected to the fixed seal plate 203, the roller 220 attached with the arm 221 as a central shaft body, and the horizontal external thermal rotation pyrolysis furnace 1. The stationary plate 222 is provided. When the roller 220 is restrained by the stationary plate 222, the movement of the fixed seal plate 203 in the radial direction is restrained. Although not shown, the fixed sealing plate 202 is also provided with a similar restraining mechanism.

  Further, as shown in FIG. 13, in order to block the inflow of outside air into the rotary drum 11, the fixed seal plate 202 and the fixed seal plate 203 are flexibly connected, and the fixed seal plate 202 and the fixed seal plate 203 are connected. A telescopic joint 218 is attached to the end seals 204 and 205 radially outward.

Further, as shown in FIG. 13, an inert gas injection device on the surface opposite to the end face seal 205 of the fixed seal plate 203, radially outward from the end face seal 205 and radially inward from the expansion joint 218. 223 is provided. The inert gas injection device 223 includes a pipe 224 for injecting an inert gas (such as nitrogen or combustible exhaust gas) into the intermediate chamber 98 between the first end face seal 204, the second end face seal 205, and the expansion joint 218, The pressure gauge 225 is connected to the pipe 224 and measures the pressure of the inert gas in the injected intermediate chamber 98.
A cleaning port 93 may be provided instead of the inert gas injection device 223.

  According to the present embodiment, as shown in FIG. 13, by rotation of the rotating drum 11, the rotating cone 11 and the thin cone 32 connected to the rotating drum 11 and the flange 33 connected to the tip of the thin cone 32 are provided. Then, the rotary seal plate 201 connected to the flange 33 and the seal plate 63 attached to the rotary seal plate 34 rotate.

  Further, the end surface seals 204 and 205 during rotation and heating of the rotary drum 11 engage with fixed pins 206 and 207 attached to the fixed seal plates 202 and 203, and the rotation is limited. Thereby, the end surface seals 204 and 205 are restrained from moving in the circumferential direction with respect to the radial direction disk portions 202a and 203a of the fixed seal plates 202 and 203. On the other hand, in the range of the gap between the fixing pins 206 and 207 and the holes 204a and 205a of the end surface seals 204 and 205, the end surface seals 204 and 205 are in relation to the radial disk portions 202a and 203a of the fixed seal plates 202 and 203. It is slidable in the radial direction. Further, the end face seals 204 and 205 are slidable in the circumferential direction and the radial direction with respect to the inclined portions 201b and 201c of the rotary seal plate 201.

  Further, the end face seals 204 and 205 are fixed to the end face seals 204 and 205 from the side of the rotary seal plate 201 by being sandwiched between the inclined portions 201b and 201c of the rotary seal plate 201 and the fixed seal plates 202 and 203. A pressing force 96 is applied to the seal plates 202 and 203 side. Since the pressing force 96 acts on the end surface seals 204 and 205 via the inclined portions 201b and 201c of the rotary seal plate 201, a component force 97 radially inward acts on the end surface seals 204 and 205. is doing. In addition, since the garter springs 208 and 209 are attached to the outer peripheral surfaces of the end surface seals 204 and 205, a force is applied to tighten the end surface seals 204 and 205 inward in the radial direction. These forces are automatically adjusted according to thermal deformation, and the end seals 204 and 205 are formed in a ring shape with the divided seam portions 204b and 205b being held in close contact with each other. For this reason, the sealing performance of the end face seals 204 and 205 is maintained.

  Further, as shown in FIG. 13, the fixed seal plate 203 is pressed against the fixed seal plate 202 side by the pressing mechanism 211. Thereby, the sealing performance of the end surface seals 204 and 205 is stably maintained. Further, since a plurality of pressing mechanisms 211 are provided in the circumferential direction of the pyrolysis furnace shaft sealing device 2, they are equally pressed over the circumferential direction of the end face seals 204 and 205. Thereby, the sealing performance of the end surface seals 204 and 205 is stably maintained equally over the circumferential direction of the end surface seals 204 and 205.

  The expansion joint 56 during rotation and heating of the rotary drum 11 flexibly connects the outlet hood 29 and the fixed seal plate 202 to absorb thermal expansion and contraction of the rotary drum 11. Thereby, compared with the case where the outlet hood 29 and the fixed seal plate 202 are firmly fixed, the thermal cracking force is not applied to the thermal cracking furnace shaft sealing device 2 from the rotary drum 11 side. The sealing device 2 is held structurally stably. Further, since the fixed seal plate 202 is provided with a restraining mechanism (not shown), movement in the circumferential direction is restrained. On the other hand, the fixed seal plate 202 is slidable in the axial direction because it is connected to the expansion joint 56 via the cooling single pipe 57 without being connected to the rotary seal plate 201. For this reason, the fixed seal plate 202 can follow the expansion and contraction of the expansion joint 56 in the axial direction.

  The expansion joint 218 during rotation and heating of the rotary drum 11 flexibly connects the fixed seal plate 202 and the fixed seal plate 203 to absorb thermal expansion and contraction of the rotary drum 11. As a result, compared to the case where the fixed seal plate 202 and the fixed seal plate 203 are firmly fixed, no force is applied to the thermal cracking furnace shaft sealing device 2 from the rotary drum 11 side, and the thermal cracking furnace shaft. The sealing device 2 is held structurally stably. Further, since the fixed seal plate 203 is provided with a restraining mechanism 219, movement in the circumferential direction is restrained. On the other hand, the fixed seal plate 203 is slidable in the axial direction because it is connected to the expansion joint 218 without being connected to the rotary seal plate 201. For this reason, the fixed seal plate 203 can follow the expansion and contraction of the expansion joint 218 in the axial direction.

  In addition, since the expansion joint 218 is attached between the fixed seal plate 202 and the fixed seal plate 203, outside air enters the intermediate chamber 98 provided between the first end surface seal 204 and the second end surface seal 205. Inflow can be blocked. Thereby, the inflow of outside air to the inside of the rotary drum 11 can be blocked.

  By the way, since the end face seals 204 and 205 each have a sliding portion as described above, it is assumed that the sealing performance is deteriorated due to foreign matter mixing or abnormal wear. In the present embodiment, the inert gas injection device 223 causes an inert gas (such as nitrogen or combustible exhaust gas) to enter the intermediate chamber 98 between the first end face seal 204, the second end face seal 205, and the expansion joint 218. Since it is injected, the atmosphere in the intermediate chamber 98 is filled with an inert gas. Thereby, even when the sealing performance of the end surface seals 204 and 205 is deteriorated, the inflow of outside air into the rotary drum 11 can be blocked.

BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram which shows the horizontal external heat | fever rotation-type pyrolysis furnace in the 1st Embodiment of this invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 1st embodiment of the present invention. The block diagram which shows the division | segmentation seam part of the end surface seal in the 1st Embodiment of this invention. The block diagram which shows the division | segmentation seam part of the radial seal in the 1st Embodiment of this invention. The B direction arrow directional view of the thermal decomposition furnace shaft sealing device in the 1st Embodiment of this invention. Explanatory drawing of the sealing effect | action of the end surface seal in the 1st Embodiment of this invention. Explanatory drawing of the sealing effect | action of the end surface seal in the 1st Embodiment of this invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 2nd embodiment of the present invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 3rd embodiment of the present invention. The C direction arrow directional view of the thermal decomposition furnace shaft sealing device in the 3rd Embodiment of this invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 4th embodiment of the present invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 5th embodiment of the present invention. The A section detail drawing of the pyrolysis furnace shaft seal device in the 6th embodiment of the present invention. The D direction arrow directional view of the pyrolysis furnace shaft sealing device in the 6th Embodiment of this invention. The whole block diagram explaining the thermal decomposition furnace apparatus of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontal type external thermal rotation type pyrolysis furnace 2 Pyrolysis furnace shaft seal device 3 Stationary stand 11 Rotating drum 12 Tire 13 Tire 14 Roller 15 Roller 16 Sprocket 17 Chain 18 Motor 19 Drive device 20 Waste 21 Input hopper 22 Input device 23 Screw Casing 24 Screw main shaft 25 Screw blade 26 Drive motor 27 Combustion chamber 28a Burner 28b Burner 28c Burner 29 Outlet hood 30 Inlet side shaft seal device 32 Thin cone 33 Flange 34 Rotating seal plate 34a Inclined disk portion 34b Axial cylindrical portion 34c End 34d Outermost peripheral portion 35 Fixed seal plate 35a Radial disk portion 36 End face seal 36a Hole portion 36b Split joint portion 36c Inclined portion 37 Radial seal 37a Hole portion 37b Split seam portion 38 Fixing pin 39 Garter spring 40 Moving plate 41 Fixed pin 42 Carter spring 43 Spring 44 Spring fixed plate 45 Load receiving mechanism 46 Pressing mechanism 47 Roller 48 Arm 49 Roller 50 Arm 51 Spring 52 Restraining mechanism 53 Arm 54 Roller 55 Stationary plate 56 Telescopic joint 57 Cooling single tube 58 Cooling Single tube 59 Cooling fin 60 Cooling fin 61 Support plate 62 Heat insulating material 63 Seal plate 64 Heat insulating material 65 Metal brush 66 Heat insulating material 67 Rotary seal plate 67a Rotating side radial disk portion 67b Axial cylindrical portion 67c End portion 67d Outermost peripheral portion 68 End face seal 68a Hole 68b Split seam portion 69 Garter spring 70 Rotating seal plate 70a Inclined disc portion 70c End portion 70d Outermost peripheral portion 71 Fixed seal plate 71a Radial disc portion 72 End face seal 72a Hole 72b Split seam portion 73 Packing sea 74 Fixed pin 75 Garter spring 76 Load receiving mechanism 77 Pressing mechanism 78 Roller 79 Arm 80 Roller 81 Arm 82 Spring 83 Restraining mechanism 84 Arm 85 Roller 86 Rotating seal plate 86a Rotating side radial disk portion 86d Outermost peripheral portion 87 End seal 87a Hole 87b Divided seam portion 88 Garter spring 89 Fixing pin 90 Inert gas injection device 91 Pipe 92 Pressure gauge 93 Cleaning port 94 Intermediate chamber 95 Stationary plate 96 Pushing force 97 Component force 98 Intermediate chamber 101 Waste 102 Pretreatment device 103 Waste supply device 104 Pyrolysis furnace device 105 Pyrolysis gas 106 Pyrolysis residue 107 Residue cooling device 201 Rotating seal plate 201a inclined body 201b inclined disk portion 201c inclined disk portion 201d outermost peripheral portion 202 fixed seal plate 202a radial circle Plate portion 203 End plate seal 204a hole 204b split seam portion 205 end seal 205a hole 205b split seam portion 206 fixing pin 207 fixing pin 208 garter spring 209 garter spring 210 load receiving mechanism 211 pressing mechanism 212 roller 213 Arm 214 Arm 215 Spring 216 Slide mechanism 217 Slide mechanism 218 Telescopic joint 219 Restraint mechanism 220 Roller 221 Arm 222 Stationary plate 223 Inert gas injection device 224 Pipe 225 Pressure gauge

Claims (15)

The waste to be treated, such as waste, stored in the rotating drum is heated by external heat and pyrolyzed, separated into pyrolysis gas and pyrolysis residue mainly composed of non-volatile components, and discharged to the outlet hood. In the thermal cracking furnace shaft sealing device provided in the horizontal external heat rotary pyrolysis furnace and disposed between the rotary drum and the outlet hood,
A rotary seal plate connected to the rotary drum side and having an axial cylindrical portion;
A fixed seal plate provided on the outlet hood side and having a radial disk portion;
An end face seal disposed between the rotary seal plate and the fixed seal plate and slidably provided on the rotary seal plate;
A radial seal disposed between the rotary seal plate and the fixed seal plate, radially outward from the end face seal, and slidably provided on the axial cylindrical portion of the rotary seal plate. A pyrolysis furnace shaft seal device. Both end face seals and radial seals are ring-shaped and can be divided in the circumferential direction.
2. The thermal cracking furnace shaft sealing device according to claim 1, wherein the end face seal and the radial seal are made of a carbon material. The rotary seal plate has an inclined disc portion that is inclined so that the separation distance decreases radially outward with respect to the fixed seal plate,
The end face seal has a ring shape and can be divided in the circumferential direction. The split seam portion of the end face seal is combined in a spherical shape and combined into a ring shape, and the radial disk portion of the fixed seal plate and the inclined circle of the rotary seal plate. The thermal cracking furnace shaft sealing device according to claim 1, wherein the thermal cracking furnace shaft sealing device is disposed between the plate portion and the plate portion. The rotation seal plate has a rotation side radial disk portion provided in parallel to the radial disk portion of the fixed seal plate,
The end face seal is ring-shaped and can be divided in the circumferential direction. The split seam part of the end face seal is spherically combined and combined into a ring shape, and the radial disk part of the fixed seal plate and the rotation side of the rotary seal plate 2. The thermal cracking furnace shaft sealing device according to claim 1, wherein the thermal cracking furnace shaft sealing device is disposed between the radial disk portion. The waste to be treated, such as waste, stored in the rotating drum is heated by external heat and pyrolyzed, separated into pyrolysis gas and pyrolysis residue mainly composed of non-volatile components, and discharged to the outlet hood. In the thermal cracking furnace shaft sealing device provided in the horizontal external heat rotary pyrolysis furnace and disposed between the rotary drum and the outlet hood,
A rotary seal plate connected to the rotary drum side;
A fixed seal plate provided on the outlet hood side and having a radial disk portion;
An end face seal disposed between the rotary seal plate and the fixed seal plate and slidably provided on the rotary seal plate;
A pyrolysis furnace shaft seal device comprising: a packing seal disposed between the rotary seal plate and the fixed seal plate and radially outward from the end face seal.   6. The thermal cracking furnace shaft seal device according to claim 5, wherein the end face seal is made of a carbon material, and the packing seal is made of heat-resistant rubber. The rotary seal plate has an inclined disc portion that is inclined so that the separation distance decreases radially outward with respect to the fixed seal plate,
The end face seal has a ring shape and can be divided in the circumferential direction. The split seam portion of the end face seal is combined in a spherical shape and combined into a ring shape, and the radial disk portion of the fixed seal plate and the inclined circle of the rotary seal plate. The thermal cracking furnace shaft sealing device according to claim 5 or 6, wherein the thermal cracking furnace shaft sealing device is disposed between the plate portion and the plate portion. The rotation seal plate has a rotation side radial disk portion provided in parallel to the radial disk portion of the fixed seal plate,
The end face seal is ring-shaped and can be divided in the circumferential direction. The split seams of the end face seal are combined in a spherical shape and combined into a ring shape, and the radial disk part of the fixed seal plate and the rotating side of the rotary seal plate The thermal cracking furnace shaft sealing device according to claim 5 or 6, wherein the thermal cracking furnace shaft sealing device is disposed between the radial disk portion.   An inert gas injection device is provided on a surface opposite to the end face seal of the fixed seal plate, radially outward from the end face seal and radially inward from the radial seal. 5. The pyrolysis furnace shaft seal device according to any one of 4 above.   6. An inert gas injection device is provided on a surface opposite to the end face seal of the fixed seal plate, radially outward from the end face seal and radially inward from the packing seal. The pyrolysis furnace shaft seal device according to any one of 8.   5. The cleaning port according to claim 1, wherein a cleaning port is provided on a surface opposite to the end face seal of the fixed seal plate, radially outward from the end face seal and radially inward from the radial seal. The pyrolysis furnace shaft seal device according to claim 1.   9. The cleaning port according to claim 5, wherein a cleaning port is provided on a surface opposite to the end seal of the fixed seal plate, radially outward from the end seal and radially inward from the packing seal. The pyrolysis furnace shaft seal device according to claim 1. An expansion joint is interposed between the outlet hood and the fixed seal plate,
The pyrolysis furnace shaft seal device according to any one of claims 1 to 12, wherein a single cooling pipe is provided between the expansion joint and the outlet hood and between the expansion joint and the fixed seal plate. The waste to be treated, such as waste, stored in the rotating drum is heated by external heat and pyrolyzed, separated into pyrolysis gas and pyrolysis residue mainly composed of non-volatile components, and discharged to the outlet hood. In the thermal cracking furnace shaft sealing device provided in the horizontal external heat rotary pyrolysis furnace and disposed between the rotary drum and the outlet hood,
A rotary seal plate connected to the rotary drum side and having an inclined body with an inclined surface;
A fixed seal plate provided on the outlet hood side and having a pair of radial disk portions,
A first end face seal is provided between the fixed seal plate and the rotary seal plate between one radial disk portion of the fixed seal plate and the inclined body of the rotary seal plate, and rotates with the other radial disk portion. A pyrolysis furnace shaft sealing device, wherein a second end face seal is provided between the sealing plate and the inclined body.   The garter spring is attached to the lower half circumference part below the horizontal surface containing the central axis of a rotating drum among radial seals, in order to lift the lower half circumference part of a radial seal. The pyrolysis furnace shaft seal device according to any one of the above.

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