JP2006068629A - Pyrolysis apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pyrolysis apparatus which can exhibit maximum throughput capacity of waste treatment and safely and stably treat pyrolysis residues. <P>SOLUTION: This pyrolysis apparatus 1 for pyrolyzing waste is provided with: a pyrolysis furnace 7 for pyrolyzing the waste to be thrown into a pyrolysis gas and pyrolysis residues; a residue separator 14 for separating metals from the pyrolysis residues; and a metal recovering device 17 for recovering the separated metals. The treatment condition of this pyrolysis apparatus is adjusted on the basis of the weight of the metals to be recovered by the metal recovering device 17. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thermal decomposition apparatus that transforms unsorted and untreated waste containing various pollutants (hereinafter also referred to as an object to be treated) into usable substances.

  Pyrolysis equipment that thermally decomposes waste as a waste treatment system that transforms unsorted and untreated waste containing various pollutants (hereinafter also referred to as treated materials) into usable materials (Pyrolysis treatment system) is conventionally known. (For example, refer to Patent Document 1).

  In general, a pyrolysis apparatus needs to have a function of heating waste containing organic matter to several hundred degrees Celsius in a reducing atmosphere to separate it into pyrolysis gas and solid residue.

  As such a thermal decomposition apparatus, an external heating type kiln that employs an external heating method for heating the rotary drum from the outside can be applied. Externally heated kilns have a long history of use in cement firing, etc., and are generally widely used as undecomposed and unsorted waste disposal devices with a simple structure and high reliability.

  FIG. 5 shows a configuration example of a main apparatus for thermally decomposing waste in such a thermal decomposition apparatus 1a. In this thermal decomposition apparatus 1a, waste is introduced into the rotary drum 3 by a charging device 2 having a weighing function, and a heating device (burner or the like) 5 is placed in a combustion chamber 4 provided outside the rotary drum 3. Is heated via the rotating drum 3. The heated waste in the rotary drum 3 is pyrolyzed into pyrolysis gas and solid pyrolysis residue and discharged from the outlet. Further, the combustion exhaust gas from the combustion chamber 4 is discharged out of the system through the exhaust duct 6.

  FIG. 6 shows a configuration example of a main apparatus for processing a thermal decomposition residue pyrolyzed from waste in the thermal decomposition apparatus 1a. In this apparatus configuration, the pyrolysis residue discharged from the outlet of the pyrolysis furnace 7 is carried into the residue cooling drum 10, and in the cooling chamber 11 provided outside the residue cooling drum 10, the residue cooling device (cooling) Water or the like) 12 is cooled through the residue cooling drum 10. The thermally decomposed residue in the cooled residue cooling drum 10 is discharged from the residue discharging device 13 and is sorted into a sorted residue other than metal and metal by the residue sorter 14, and the metal is recovered by the metal recovery unit 17. . On the other hand, the sorted residue is collected in the sorted residue collector 18 and conveyed to the granulator 19. Then, it is further sorted and produced into a granulated product.

The metal thus selected is recycled and the granulated material is reused as an energy source. Further, the pyrolysis gas pyrolyzed in the pyrolysis furnace 7 is sent to various processing apparatuses in the post-process of the pyrolysis furnace 7 and subjected to detoxification treatment, and then reused as an energy source.
JP 2000-202419 A

  In the thermal decomposition treatment system as described above, it is desirable that the thermal decomposition treatment of an object to be treated such as waste is performed stably and continuously over a long period of time. However, in the case where the thermal decomposition treatment of the workpiece is continuously performed for a long time in the rotary drum of the pyrolysis furnace, the thermal decomposition residue adheres to the inner wall of the rotary drum and the processing capacity is lowered. The trouble of doing occurs. In addition, the wire in the pyrolysis residue in the rotating drum becomes a huge bundle (giant wire ball) and stays on the way without being transported to the metal recovery device, resulting in clogging of the pyrolysis residue, and pyrolysis treatment It is also assumed that there is a problem that the process cannot be continued. Furthermore, the giant wire ball may be transported to the metal recovery device without being sufficiently cooled in the residue cooling drum, and may be ignited by the metal recovery device.

  The thermal decomposition residue adhering to the inner wall of the rotating drum blocks the heat transferred from the outside to the inside of the rotating drum. For this reason, when the workpiece in the rotating drum is heated from the outside of the rotating drum, the heat due to the heating may not be sufficiently transferred to the inside of the rotating drum. As a result, the heat transfer efficiency deteriorates, and it becomes difficult to efficiently thermally decompose the object to be processed in the rotating drum. In this case, the non-processed product cannot be heated to a predetermined pyrolysis temperature, and the processing amount must be reduced.

  The wire ball is hardly formed when there is little adhesion of pyrolysis residue to the inner wall of the rotating drum, or the shape of the wire ball is small even if the wire ball is formed. On the other hand, when there is much adhesion of the thermal decomposition residue to the inner wall of the rotating drum, the wire ball tends to be formed larger. If the wire ball becomes larger than the residue transport space such as the residue discharge device or the residue sorter, the giant wire ball cannot pass through the residue transport space, and the blockage of the pyrolysis residue cannot be avoided.

  Further, when the wire ball is enlarged, the distance between the inner wall of the residue cooling drum and the center portion of the wire ball becomes long, and the residue cooling drum cannot cool the wire ball to the predetermined cooling temperature. For this reason, the inside of a wire ball is conveyed to a metal recovery device with the high temperature state continuing.

  Furthermore, the heat capacity of the large wire ball is larger than that of the small wire ball, and the temperature drop inside the wire ball is gradual even after being recovered by the metal recovery device. For this reason, when the atmosphere is released in the process of removing the metal from the metal recovery unit, there is a possibility that the inside of the wire ball is in a high temperature state above the ignition point of the thermal decomposition residue. In this case, the thermal decomposition mixed in the metal recovery unit It is possible that the residue may ignite.

  In order to solve such a problem, an apparatus for mechanically scraping off deposits on the inner wall of the rotating drum while continuing the processing operation is being developed. However, it is difficult to completely prevent deposits from being deposited, and when an externally heated rotary drum is applied to a thermal decomposition apparatus, it can be said that the problem of reduced performance due to adhesion inevitably occurs.

  Generally, the heating state of the workpiece is controlled by monitoring the temperature inside or outside the drum, or by the temperature of the workpiece to be processed at the outlet. When the heat transfer is deteriorated by the deposits on the inner wall of the rotating drum and the temperature inside the drum or at the outlet is lowered, generally a measure is taken to increase the heating amount or to reduce the processing amount. However, increasing the heating amount naturally has an upper limit value due to the heat resistance of the device and the capacity of the heating device, and after reaching this upper limit, the only choice is a reduction in the processing amount.

  On the other hand, it is difficult to accurately measure the temperature inside the drum in the state where the deposits are accumulated, and it is difficult to determine whether appropriate heating for the thermal decomposition process is performed. For this reason, it is difficult to bring out the performance to the upper limit of the capacity of the pyrolysis furnace, and it is unavoidable to operate with a low throughput.

  The present invention has been made in order to solve the above-described problems. Even when a heating-inhibiting factor such as adhesion occurs, the waste processing capacity can be maximized, and the pyrolysis residue can be safely removed. It is another object of the present invention to provide a thermal decomposition apparatus that can be processed stably and stably.

  The present invention includes a pyrolysis furnace that pyrolyzes input waste into pyrolysis gas and pyrolysis residue, a residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue, and pyrolysis A pyrolysis apparatus that includes a residue sorter that sorts metal from residues and a metal recovery unit that recovers the selected metal, and thermally decomposes waste, and the weight of the metal recovered in the metal recovery unit It is a thermal decomposition apparatus characterized by adjusting process conditions based on this.

  The present invention includes a pyrolysis furnace that pyrolyzes input waste into pyrolysis gas and pyrolysis residue, a residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue, and pyrolysis A residue separator for separating the residue into a metal and a sorted residue other than metal, and a thermal decomposition apparatus for thermally decomposing waste, wherein the temperature of the thermal decomposition residue, the temperature of the metal, and the selected residue The thermal decomposition apparatus is characterized in that the processing conditions are adjusted based on any one of the above temperatures or a plurality of temperatures selected from these.

  The present invention includes a pyrolysis furnace that pyrolyzes input waste into pyrolysis gas and pyrolysis residue, a residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue, and pyrolysis A residue separator for separating the residue into a metal and a sorted residue other than metal, and a thermal decomposition apparatus for thermally decomposing waste, wherein the temperature of the thermal decomposition residue, the temperature of the metal, and the selected residue The thermal decomposition apparatus is characterized in that the processing conditions are adjusted based on any one of the above temperatures or a plurality of temperatures selected from these and the amount of heat of cooling by the residue cooler.

  The present invention includes a pyrolysis furnace that pyrolyzes input waste into pyrolysis gas and pyrolysis residue, a residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue, and pyrolysis A pyrolysis apparatus comprising a residue sorter that sorts residues into metals and sorted residues other than metals, and a metal recovery unit that collects sorted metals, and thermally decomposes waste, The temperature of the residue, the temperature of the metal, and the temperature of the selected residue, or a plurality of temperatures selected from these, the amount of cooling by the residue cooler, and the weight of the metal recovered in the metal recovery unit It is a thermal decomposition apparatus characterized by adjusting process conditions based on it.

  The present invention further includes a residue discharger that communicates with the residue cooler and the residue sorter via a damper, and that further includes a residue discharge device that discharges the pyrolysis residue from the residue cooler to the residue sorter. The temperature is a thermal decomposition apparatus characterized in that it is a temperature at any one of the outlet of the residue cooler, the residue discharge device, the residue sorter, or a plurality of locations selected from these.

  The present invention is a thermal decomposition apparatus characterized in that the ambient temperature in a place where the thermal decomposition residue is present is measured as the temperature of the thermal decomposition residue, the temperature of the metal, and the temperature of the sorted residue.

  The present invention provides a residue cooler comprising a rotatable residue cooling drum that receives a pyrolysis residue from a pyrolysis furnace, a cooling water pipe that injects cooling water onto the residue cooling drum, and a cooling water that collects the injected cooling water The amount of cooling heat by the residue cooler is measured from the difference between the amount of cooling water injected from the cooling water piping and the amount of cooling water recovered in the cooling water return piping. It is the thermal decomposition apparatus characterized.

  The present invention includes a cooling water thermometer and a cooling water flow meter provided in the cooling water pipe, a cooling water return thermometer provided in the cooling water return pipe, the cooling water thermometer, the cooling water flow meter, and the cooling water. The thermal decomposition apparatus is characterized in that the difference between the heat quantity of the cooling water injected from the cooling water pipe and the heat quantity of the cooling water collected in the cooling water return pipe is measured by the return thermometer.

  The present invention is the thermal decomposition apparatus characterized in that the processing condition to be adjusted is an input amount of waste input to the thermal decomposition furnace.

  The present invention is the thermal decomposition apparatus, wherein the residue cooler cools the thermal decomposition residue with cooling water, and the adjusted treatment condition is the amount of cooling water.

  In the present invention, the pyrolysis furnace has a rotating drum that receives the waste and heats the waste while being rotated by being heated from the outside, and the processing condition to be adjusted is the rotational speed of the rotating drum. The thermal decomposition apparatus characterized by these.

  The present invention includes a residue cooling drum that receives a pyrolysis residue from a pyrolysis furnace and cools the pyrolysis residue while being rotated by being cooled from the outside. It is a thermal decomposition apparatus characterized by the rotational speed of the cooling drum.

  In the present invention, the pyrolysis furnace has a rotating drum that heats the waste while rotating by receiving waste and being heated from the outside, and the residue cooler receives the pyrolysis residue from the pyrolysis furnace It has a residue cooling drum that cools the pyrolysis residue while rotating by being cooled from the outside by cooling water, and the processing conditions to be adjusted are the amount of waste input to the pyrolysis furnace, the amount of cooling water And a plurality of processing conditions selected from any one of the rotational speed of the rotating drum and the rotating speed of the residue cooling drum.

  According to the present invention, it is possible to select an optimal processing condition according to the state of the thermal decomposition apparatus after more accurately detecting the processing status of the waste. As a result, the waste treatment capacity of the thermal decomposition apparatus can be maximized.

  Hereinafter, an embodiment of a thermal decomposition apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 4 are diagrams for explaining the present embodiment. Of these, FIG. 1 is a block diagram showing an embodiment of the thermal decomposition apparatus 1 according to the present invention, and FIG. It is a figure explaining a flow.

  FIG. 1 is a configuration diagram after the process of treating the pyrolysis residue in the pyrolysis apparatus 1. Prior to that, the waste is pyrolyzed into pyrolysis gas and pyrolysis residue, and the pyrolysis gas and The structure up to the process of sorting into pyrolysis residues is not shown. In the present embodiment, the apparatus configuration up to the process of pyrolyzing waste into pyrolysis gas and pyrolysis residue and sorting it into pyrolysis gas and pyrolysis residue is the same as that of the prior art described with reference to FIG. This is the same as the thermal decomposition apparatus 1a, and a detailed description of this part is partially omitted. Also, in the apparatus configuration shown in FIG. 1, there are the same parts as those of the prior art pyrolysis apparatus 1a described with reference to FIG. 6, and the same parts are denoted by the same reference numerals and detailed description thereof is partially omitted. .

  As shown in FIGS. 1 to 5, the thermal decomposition apparatus 1 according to the present embodiment includes a thermal decomposition furnace 7 that thermally decomposes the input waste into a thermal decomposition gas and a thermal decomposition residue, and a thermal decomposition furnace 7. Residue cooler 9 that receives the pyrolysis residue and cools the pyrolysis residue, and a residue sorter 14 that sorts the cooled pyrolysis residue into a metal and a sorted residue other than metal (see FIG. 1 and FIG. 5).

  Moreover, the thermal decomposition apparatus 1 is arrange | positioned between the residue cooler 9 and the residue sorter 14, and can be freely closed to the residue cooler 9 and the residue sorter 14 via the upper damper 22 and the lower damper 23, respectively. A residue discharge device 13 is further provided for discharging the pyrolysis residue from the residue cooler 9 to the residue sorter 14 (FIG. 1).

  Furthermore, the thermal decomposition apparatus 1 further includes a metal recovery unit 17 that recovers the metal selected by the residue selector 14 and a sorted residue recovery unit 18 that recovers the sorted residue. 1).

  Among these, as described above, the pyrolysis furnace 7 includes a rotatable rotating drum 3 that receives waste to be charged and a heating device 5 that heats the rotating drum 3 from the outside. The rotating drum 3 receives waste from the charging device 2 and is heated by the heating device 5 from the outside, so that the waste stored inside the rotating drum 3 and passing through the rotating drum 3 is rotated. Then, it is thermally decomposed into pyrolysis gas and pyrolysis residue (FIG. 5).

  The residue cooler 9 is injected with a rotatable residue cooling drum 10 that receives the pyrolysis residue from the pyrolysis furnace 7, and a cooling water pipe (also referred to as a residue cooling device) 12 that injects cooling water onto the residue cooling drum 10. And a cooling water return pipe 21 for collecting the cooling water. The residue cooling drum 10 receives the pyrolysis residue from the pyrolysis furnace 7 and is cooled by being sprayed with cooling water from the cooling water pipe 12 to the outside, thereby being housed inside the residue cooling drum 10, The pyrolysis residue passing through the residue cooling drum 10 is cooled while rotating (FIG. 1).

  In the present embodiment, as shown in FIG. 5, a residue cooler outlet thermometer 27 is provided at the outlet of the residue cooler 9 so that the temperature of the pyrolysis residue 7 can be measured. A residue discharger thermometer 28 is provided therein, and a residue sorter thermometer 29 is provided in the residue sorter 14. In addition, a metal recovery device thermometer 30 is provided in the metal recovery device 17 so that the temperature of the metal and the selected residue can be measured after the pyrolysis residue is separated into the metal and the selection residue by the residue selector 14. A sorted residue collector thermometer 31 is provided in the sorted residue collector 18. Further, a weight measuring device 24 is provided in the metal recovery device 17 so that the weight of the metal recovered in the metal recovery device 17 can be measured.

  A cooling water thermometer 25 and a cooling water flow meter 32 are provided in the cooling water pipe 12 of the residue cooler 9, and a cooling water return thermometer 26 is provided in the cooling water return pipe 21. The cooling water thermometer 25, the cooling water flow meter 32, and the cooling water return thermometer 26, the amount of cooling water injected from the cooling water pipe 12, and the cooling water recovered in the cooling water return pipe 21. The difference from the amount of heat can be measured. This difference corresponds to the amount of heat taken by the residue cooler 9 from the pyrolysis residue passing through the residue cooling drum 10, that is, the net amount of cooling heat of the pyrolysis residue by the residue cooler 9.

  In the pyrolysis apparatus 1 having such a configuration, if the pyrolysis residue 7 contains a lot of wire balls, the amount of heat brought into the residue cooler 9 increases. Moreover, the wire ball is less likely to be cooled than the powdery residue as described above. Therefore, if the amount of cooling water (cooling water flow rate) from the cooling water pipe 12 of the residue cooler 9 is constant, the measured value of the cooling water return thermometer 26 increases, and the measured value of the residue cooler outlet thermometer 27 also increases. To rise.

  Next, when the wire ball advances into the residue discharging device 13 and the upper damper 22 and the lower damper 23 are closed, the measured value of the residue discharging device thermometer 28 increases rapidly, and the temperature gradually increases after the wire ball passes. Go down. Thereafter, when the wire ball advances into the residue sorter 14, the measured value of the residue sorter thermometer 29 increases, and the measured values of the metal recovery device thermometer 30 and the selected residue recovery device thermometer 31 also increase. .

  Thus, it is possible to estimate the amount and size of the wire ball from the tendency of the temperature rise in each place accompanying the passage of the wire ball that is high in temperature and difficult to be cooled.

  FIG. 4 shows a temperature change measured by the residue discharging apparatus thermometer 28 as an example of such a temperature change. In D, E, and F, the temperature rises rapidly, and then the temperature gradually falls. That is, at D, E, and F, the wire ball is passing through the residue discharging device 13, and the upper damper 22 and the lower damper 23 are closed.

  Further, when the wire ball is recovered in the metal recovery device 17, the weight measured by the weight measuring device 24 rapidly increases. It is possible to estimate the amount and size of the wire ball from such weight change.

  FIG. 3 shows an example of the weight change measured by the weight measuring device 24. In A, B, and C, the weight increases rapidly, and at this time, the wire ball is recovered in the metal recovery unit 17. On the other hand, a smooth upward portion such as A to B or B to C indicates that a certain amount of metal has been collected and the treatment in the pyrolysis furnace 7 is stable.

  In the present embodiment, the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the sorted residue, the heat of cooling by the residue cooler 9, and the metal recovery device that change in accordance with the presence of the wire ball as described above. The waste processing conditions are adjusted (controlled) on the basis of the weight of the metal recovered in 17.

  As shown in FIG. 2, the control unit 40 of the thermal decomposition apparatus 1 includes an input amount control device 35 that adjusts the input amount of waste from the input device 2 to the pyrolysis furnace 7, and a cooling water pipe of the residue cooler 9. (Residue cooling device) A cooling water flow rate control device 36 that adjusts the cooling water flow rate from 12, and a rotation that adjusts the rotation speed of the rotating drum 3 of the pyrolysis furnace 7 and the rotating speed of the residue cooling drum 10 of the residue cooler 9. A number controller 37, a metal weight controller 33 for detecting when each processing condition needs to be adjusted based on the measurement value of the weight measuring device 24, and each thermometer 25, 26, 27, 28, 29, 30. , 31, and a temperature controller 34 for detecting when it is necessary to adjust each processing condition, and this processing unit 40 controls waste processing conditions.

  In the present embodiment, the metal weight controller 33 determines whether the rate of change of the weight measurement value of the weight measuring device 24 is equal to or greater than a preset specified value, and the residue cooler outlet thermometer 27, residue discharge device The temperature controller 34 determines whether the rate of change of the temperature measurement values of the thermometer 28, the residue sorter thermometer 29, the metal collector thermometer 30, and the sorted residue collector thermometer 31 is equal to or higher than a preset specified value. And the temperature controller 34 determines whether the rate of change of the temperature measurement value of the cooling water return thermometer 26 is equal to or greater than a preset specified value. Then, when each of the controllers 33 and 34 detects that one or more of these are equal to or greater than the specified value, the input amount control device 35, the cooling water flow rate control device 36, and the rotation speed control device 37 are included. A signal is sent to any one or more of these, and the input amount control device 35, the cooling water flow rate control device 36, and the rotation speed control device 37 adjust each processing condition.

  Thus, the input amount control device 35 is based on the rate of change of the weight of the metal, the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the sorted residue, and the temperature of the cooling water (cooling heat amount by the residue cooler). , The amount of waste input by the input device 2, the amount of cooling water (cooling water flow rate) of the residue cooler 9, the rotating drum by any one or a plurality of control devices of the cooling water flow rate control device 36 and the rotation speed control device 37 The rotational speed of 33 and the rotational speed of the residue cooling drum 10 can be controlled.

  Further, a plurality of step-by-step specified values are set for each measurement value, and the change rate of each measurement value is further quantitatively (stepwise) determined by the metal weight controller 33 and the temperature controller 34 ( Evaluation). In this case, for example, when the metal weight controller 33 and the temperature controller 34 determine that the rate of change of each measurement value is small, only the cooling water amount is adjusted by the cooling water flow rate control device 36, while the change of each measurement value is When the metal weight controller 33 and the temperature controller 34 determine that the rate is large, not only the cooling water flow control device 36 adjusts only the cooling water amount but also the rotation speed control device 37 controls the rotation drum 33 and the residue cooling drum 10. It is also possible to adjust the amount of waste input by the input amount control device 35.

  In the present application, “based on the temperature of the pyrolysis residue”, it is not necessary to measure the temperature of the pyrolysis residue itself in each place, but the ambient temperature in each place where the pyrolysis residue exists is measured. May be. Since the atmospheric temperature changes in accordance with the temperature of the thermal decomposition residue present at the place, the temperature controller 34 determines the measured value of the atmospheric temperature, and controls based on the temperature of the thermal decomposition residue. Because you can. Thereby, even when measurement of the pyrolysis residue is difficult, “control based on the temperature of the pyrolysis residue” can be easily performed. The same is true for metals and sorted residues. That is, measuring the atmospheric temperature of the place where the metal and the sorted residue are present to control the processing condition results in controlling the processing condition based on the temperature of the metal and the temperature of the sorted residue. Become.

In the present embodiment configured as described above, even if wire balls are generated due to the progress of deposits in the rotary drum 3 of the pyrolysis furnace 7 with the progress of waste processing, By measuring the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the sorted residue, the temperature of the cooling water (the amount of cooling heat by the residue cooler), and the weight of the recovered metal, and determining the rate of change, the wire It is possible to accurately detect the occurrence of the ball. Then, according to the generation state of the wire ball, the input amount control device 35, the cooling water flow rate control device 36 and the rotational speed control device 37 are used to input the waste amount, the cooling capacity by the residue cooler 9, and the rotating drum 33 and the residue. The number of rotations with the cooling drum 10 can be appropriately controlled.
Further, the amount of cooling heat of the pyrolysis residue by the residue cooler 9 can be measured from the temperature of the cooling water. Therefore, the generation state of the wire ball can be detected more accurately based on the amount of cooling heat and the temperature of the pyrolysis residue after being cooled by the residue cooler 9.

  According to the present embodiment, after more accurately detecting the occurrence state of the wire ball in the pyrolysis residue accompanying the progress of the deposit in the rotary drum 3 in accordance with the process of the pyrolysis furnace 7, Since the optimum processing conditions can be selected according to the state of the thermal decomposition apparatus 1, the waste processing capacity of the thermal decomposition apparatus 1 can be maximized. Moreover, this can prevent the pyrolysis residue from being ignited more appropriately than before.

  In the present embodiment, the processing conditions are based on the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the sorted residue, the amount of heat of cooling by the residue cooler 9, and the weight of the recovered metal. Although the example which controls (adjusts) was shown, it is not restricted to this. The processing conditions may be adjusted based only on the weight of the metal, or only one of the temperature of the pyrolysis residue, the temperature of the metal, and the temperature of the sorted residue, or a plurality of selected from these The processing conditions may be adjusted based only on the temperature, or the processing conditions may be adjusted based only on the amount of cooling heat by the residue cooler 9. Further, the processing conditions are adjusted based on one of the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the sorted residue, or a plurality of temperatures selected from these, and the amount of heat of cooling by the residue cooler 9. It may be. Furthermore, any one of the temperature of the pyrolysis residue, the temperature of the metal, and the temperature of the sorted residue, or a plurality of temperatures selected from these, and the processing conditions based on the weight of the metal recovered in the metal recovery unit 17 May be adjusted. Furthermore, the processing conditions may be adjusted based on the amount of heat of cooling by the residue cooler 9 and the weight of the metal recovered by the metal recovery unit 17. By doing in this way, control can be simplified, the manufacturing cost and maintenance cost of the thermal decomposition apparatus 1 can be reduced, and the running cost of such a thermal decomposition apparatus 1 can also be reduced. .

  Moreover, in this Embodiment, although the temperature of the thermal decomposition residue showed the example which measures in the exit of the residue cooler 9, the residue discharge apparatus 13, and the residue sorter 14, it is not restricted to this, In order to simplify the control, the temperature of the pyrolysis residue may be measured only in one of these places or a plurality of places selected from these places.

  Further, in the present embodiment, the processing conditions that can be controlled (adjusted) by the control unit 40 are the amount of waste input to the pyrolysis furnace 7, the amount of cooling water (the amount of cooling by the residue cooling device 12). ), An example in which the rotation speed of the rotary drum 3 and the rotation speed of the residue cooling drum 10 are shown is shown, but the present invention is not limited thereto. For example, not all of these processing conditions can be controlled, but only one or a plurality of processing conditions selected from these can be controlled. By doing in this way, control can be simplified, the manufacturing cost and maintenance cost of the thermal decomposition apparatus 1 can be reduced, and the running cost of such a thermal decomposition apparatus 1 can also be reduced. .

The block diagram which shows one Embodiment of the thermal decomposition apparatus by this invention. The figure explaining the control flow of a thermal decomposition apparatus. The figure which shows the example of the weight change measured by the weight measuring device. The figure which shows the example of the temperature change measured with the residue discharge apparatus thermometer. The block diagram which shows the conventional thermal decomposition apparatus. The block diagram which shows the conventional thermal decomposition apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal decomposition apparatus 2 Input apparatus 3 Rotating drum 4 Combustion chamber 5 Heating apparatus 6 Exhaust duct 7 Thermal decomposition furnace 9 Residual cooler 10 Residual cooling drum 11 Cooling chamber 12 Cooling water piping 13 Residue discharge apparatus 14 Residue sorter 17 Metal recovery device 18 Sorted residue collector 19 Granulator 21 Cooling water return pipe 22 Upper damper 23 Lower damper 24 Weight measuring device 25 Cooling water thermometer 26 Cooling water return thermometer 27 Residual cooler outlet thermometer 28 Residue discharging device thermometer 29 Residue sorter thermometer 30 Metal collector thermometer 31 Sorted residue collector thermometer 32 Cooling water flow meter 33 Metal weight controller 34 Temperature controller 35 Input amount control device 36 Cooling water flow rate control device 37 Rotational speed control device 40 Control unit

Claims (13)

A pyrolysis furnace for pyrolyzing the input waste into pyrolysis gas and pyrolysis residue;
A residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue;
A residue sorter that sorts metals from pyrolysis residues;
A metal recovery device that recovers the selected metal, and a thermal decomposition apparatus that thermally decomposes waste,
A thermal decomposition apparatus that adjusts processing conditions based on the weight of metal recovered in a metal recovery unit. A pyrolysis furnace for pyrolyzing the input waste into pyrolysis gas and pyrolysis residue;
A residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue;
A residue sorting machine that sorts the pyrolysis residue into a metal and a sorted residue other than metal, and a pyrolysis device that thermally decomposes waste,
A thermal decomposition apparatus characterized by adjusting processing conditions based on any one of a temperature of a thermal decomposition residue, a temperature of a metal, and a temperature of a sorted residue, or a plurality of temperatures selected from these. A pyrolysis furnace for pyrolyzing the input waste into pyrolysis gas and pyrolysis residue;
A residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue;
A residue sorting machine that sorts the pyrolysis residue into a metal and a sorted residue other than metal, and a pyrolysis device that thermally decomposes waste,
The processing conditions are adjusted based on the temperature of the pyrolysis residue, the temperature of the metal, the temperature of the selected residue, or a plurality of temperatures selected from these, and the amount of heat of cooling by the residue cooler Thermal decomposition equipment. A pyrolysis furnace for pyrolyzing the input waste into pyrolysis gas and pyrolysis residue;
A residue cooler that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue;
A residue sorter that sorts pyrolysis residues into metals and sorted residues other than metals;
A metal recovery device that recovers the selected metal, and a thermal decomposition apparatus that thermally decomposes waste,
The temperature of the pyrolysis residue, the temperature of the metal, and the temperature of the selected residue, or a plurality of temperatures selected from these, the amount of heat cooled by the residue cooler, and the weight of the metal recovered in the metal recovery unit The thermal decomposition apparatus characterized by adjusting processing conditions based on the above. The residue cooler and the residue sorter communicate with each other via dampers, and further include a residue discharge device that discharges the pyrolysis residue from the residue cooler to the residue sorter,
The temperature of the pyrolysis residue is a temperature at any location in the outlet of the residue cooler, in the residue discharge device, in the residue sorter, or in a plurality of locations selected from these locations. The thermal decomposition apparatus as described in any one of 4.   The thermal decomposition according to any one of claims 2 to 5, wherein the temperature of the pyrolysis residue, the temperature of the metal, and the temperature of the sorted residue are measured as the ambient temperature of the place where they exist. apparatus. The residue cooler includes a rotatable residue cooling drum that receives the pyrolysis residue from the pyrolysis furnace, a cooling water pipe that injects cooling water onto the residue cooling drum, a cooling water return pipe that collects the injected cooling water, Have
The amount of heat of cooling by the residue cooler is measured from the difference between the amount of heat of cooling water injected from the cooling water pipe and the amount of heat of cooling water recovered to the cooling water return pipe. The thermal decomposition apparatus as described in any one of these. A cooling water thermometer and a cooling water flow meter are provided in the cooling water pipe, a cooling water return thermometer is provided in the cooling water return pipe,
The cooling water thermometer, cooling water flow meter, and cooling water return thermometer measure the difference between the amount of cooling water injected from the cooling water pipe and the amount of cooling water recovered in the cooling water return pipe. The thermal decomposition apparatus according to claim 7, wherein:   The thermal decomposition apparatus according to any one of claims 1 to 4, wherein the adjusted processing condition is an input amount of waste input to the thermal decomposition furnace. The residue cooler cools the pyrolysis residue with cooling water,
The thermal decomposition apparatus according to any one of claims 1 to 4, wherein the adjusted treatment condition is an amount of cooling water. The pyrolysis furnace has a rotating drum that receives the waste and heats the waste while rotating by being heated from the outside,
The thermal decomposition apparatus according to claim 1, wherein the processing condition to be adjusted is a rotational speed of the rotary drum. The residue cooler has a residue cooling drum that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue while rotating by being cooled from the outside,
The thermal decomposition apparatus according to claim 1, wherein the processing condition to be adjusted is a rotation speed of the residue cooling drum. The pyrolysis furnace has a rotating drum that receives the waste and heats the waste while rotating by being heated from the outside,
The residue cooler has a residue cooling drum that receives the pyrolysis residue from the pyrolysis furnace and cools the pyrolysis residue while rotating by being cooled from the outside by cooling water,
The treatment condition to be adjusted is any one of a waste input amount, a cooling water amount, a rotation speed of the rotating drum, and a rotation speed of the residue cooling drum, or a plurality of selection conditions selected from these. The thermal decomposition apparatus according to any one of claims 1 to 4, wherein the thermal decomposition apparatus is a processing condition.

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