JP4159932B2 - Pyrolysis treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermal decomposition processing apparatus that thermally decomposes and processes an object to be processed such as waste in a thermal decomposition furnace, and more specifically, when discharging a residue generated in the thermal decomposition furnace to a residual cooler. This is related to the residual emission technology.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a waste treatment system that transforms unsorted and untreated waste containing various contaminants into usable materials, a thermal decomposition treatment system that treats waste by pyrolysis is known ( For example, see Patent Document 1). FIG. 4 is a block diagram showing an example of such a thermal decomposition processing system. In this figure, an object to be treated such as waste is pretreated in a pretreatment apparatus 101 and then supplied into a pyrolysis furnace 103 by a waste supply apparatus 102 and processed by pyrolysis in the pyrolysis furnace 103. Is done. Here, the organic polymer gas generated by pyrolysis in the pyrolysis furnace 103 is reformed by the gas reformer 104 to become a low-molecular combustible gas, and further purified by the gas purification device 105 to be combustible gas. This is a reformed gas.
[0003]
  On the other hand, the residue generated in the pyrolysis furnace 103 is discharged out of the pyrolysis furnace 103 by the residue discharge device 106. After the discharged residue is cooled by the residue cooler 107,Residual discharge device 108Then, it is sent to the granulator 109, where it is sorted and granulated for recycling.
[0004]
In this way, in the pyrolysis processing system shown in FIG. 4, the reformed gas, which is a combustible gas of the secondary material discharged from the pyrolysis processing system, is reused as an energy source in the pyrolysis processing system. Is done.
[0005]
Here, as the pyrolysis furnace 103 used in the pyrolysis processing system shown in FIG. 4, for example, an externally heated rotary kiln that heats a rotary drum from the outside is generally used. The pyrolysis furnace 103, the gas reformer 104, and the residual cooler 107 are controlled to a slightly negative pressure state by an induction blower, and the main parts are sealed so that excessive air does not enter from the outside. ing.
[0006]
There are various methods for supplying waste by the waste supply device 102. For example, as disclosed in Patent Document 2, a method of sending waste into the pyrolysis furnace 103 by a rotating screw. Is common. This rotary screw system is also used when residues are discharged by the residue discharging devices 106 and 108.
[0007]
[Patent Document 1]
Japanese Patent Publication No.8-24904
[Patent Document 2]
JP 2001-279264 A
[0008]
[Problems to be solved by the invention]
By the way, although the to-be-processed object of the thermal decomposition processing apparatus of this invention assumes the waste mainly, there exist various things contained in a waste. For example, there is shredder dust such as automobile seat members. When this is pyrolyzed, wire such as electric wires is included in the dust, so that these wires become large wires during the pyrolysis process. May grow into a bunch of. And if such a large bundle of wires is mixed in the residue to be discharged by the residue discharge device, the bundle of wires gets tangled with the rotating screw, and the smooth residue discharge operation cannot be performed. There is also a risk that waste disposal cannot be continued.
[0009]
In addition, the conventional rotary screw type residual discharge device has to spend a considerable amount of work on maintenance work such as cleaning work after a certain period of time, and has a complicated structure, which is disadvantageous in terms of cost. It was a thing.
[0010]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a thermal decomposition treatment apparatus that can smoothly perform a residue discharge operation, is easy to perform maintenance work, and is advantageous in terms of cost. It is said.
[0011]
[Means for Solving the Problems]
  As means for solving the above-mentioned problems, the invention according to claim 1 is a pyrolysis furnace for thermally decomposing an object to be processed, which is input from an object input device, in a heated rotating drum, and the pyrolysis furnace. A residue cooler that is installed at a lower position than the residue and that introduces a residue discharged from the pyrolysis furnace during the thermal decomposition of the workpiece, and cools the residue in a cooled rotating drum. A pyrolysis treatment apparatus, disposed between the pyrolysis furnace and the residue cooler, for introducing a residue discharged from the pyrolysis furnace into the residue cooler; and When the introduction upper and lower dampers disposed in the residue introduction duct and the residue discharged from the pyrolysis furnace are introduced into the residue cooler, the introduction upper and lower dampers To avoid the situation where both sides are open, both And discharge control means left for opening and closing control of,And the residual discharge control means detects that the closing operation is not completed within a predetermined time even though the closing operation is controlled for the upper damper or the lower damper for introduction. In this case, once the opening operation is controlled with respect to the damper, then the closing operation is repeated again.
[0012]
  The invention according to claim 2A pyrolysis furnace for thermally decomposing the object to be processed, which is input from the object to be processed input device, in a heated rotating drum, and installed at a position below the pyrolysis furnace, and when the object to be processed is thermally decomposed A residue cooler that introduces the residue discharged from the pyrolysis furnace and cools the residue in a cooled rotating drum, the pyrolysis treatment apparatus comprising the pyrolysis furnace, the residue cooler, A residue introduction duct for introducing the residue discharged from the pyrolysis furnace into the residue cooler, and an introduction upper damper and a lower damper arranged in the residue introduction duct. When the residue discharged from the pyrolysis furnace is introduced into the residue cooler, the opening / closing control of both dampers is performed so that both the upper and lower dampers for introduction do not open. And a residual discharge control means to perform,A shooter portion having a curved shape is formed in a downstream portion of the residue introduction duct at the position where the lower damper is disposed, and an impact of a predetermined strength is applied to the shooter portion outside the shooter portion. Installed possible air shock hammer,It is characterized by that.
[0014]
  The invention according to claim 3 is the invention according to claim 1,The residual discharge control means, when the completion of the closing operation of the damper cannot be detected even if the control of the closing operation for the upper damper or the lower damper for introduction is repeated a set number of times, the thermal decomposition is performed. The amount of residual discharge from the pyrolysis furnace is reduced by lowering the number of revolutions of the rotary drum of the furnace than during normal operation.
[0015]
  The invention according to claim 4 is the invention according to claim 3,A char emergency storage tank installed at a position below the pyrolysis furnace and having a volume capable of storing a predetermined amount of residue from the pyrolysis furnace, and a char emergency storage tank in the vicinity of the residue introduction duct, An emergency duct for dropping the residue discharged from the cracking furnace into the char emergency storage tank, and the residue discharge control means makes the rotational speed of the rotary drum of the pyrolysis furnace lower than that during normal operation When the state in which the completion of the closing operation of the damper cannot be detected continues for a predetermined time or longer, the residue generated in the pyrolysis furnace is dropped into the char emergency storage tank through the emergency duct. It is characterized by that.
[0016]
  The invention according to claim 5 is the invention according to claims 1 to 4.In any one of the inventions, a residue discharge duct disposed on the downstream side of the residue cooler for discharging the residue cooled by the residue cooler to the outside, and disposed in the residue discharge duct. An upper damper and a lower damper for discharging, and the residue discharge control means, when discharging the residue cooled by the residue cooler to the outside, both the upper damper and the lower damper for discharging Open / close control of both dampers so that no open state occursFurther, the residual discharge control means detects that the closing operation is not completed within a predetermined time even though the closing operation is controlled for the upper damper or the lower damper for discharging. In such a case, the control of the opening operation is once performed on the damper, and then the control of the closing operation is repeated again.It is characterized by that.
[0018]
  The invention according to claim 6 is the invention according to claim 5,The residual discharge control means performs the residual cooling when the completion of the closing operation of the damper cannot be detected even if the control of the closing operation for the upper damper or the lower damper for discharging is repeated a set number of times. The amount of residual discharge from the residual cooler is reduced or the residue is not discharged by lowering the rotation speed of the rotating drum of the machine than during normal operation or stopping the rotation. It is characterized by.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a configuration diagram of a thermal decomposition processing apparatus according to an embodiment of the present invention. The waste to be treated is sent out into the rotary drum 4 of the pyrolysis furnace 3 by the waste input device 1 having the rotary screw 2. The pyrolysis furnace 3 includes the rotating drum 4, a combustion chamber 5 disposed so as to surround the outer side of the intermediate portion of the rotating drum 4, and a plurality of burners 6 attached to the combustion chamber 5 for heating the rotating drum 4. A pair of support rollers 7 and 7 that support one end side and the other end side of the rotary drum 4, a drive motor 9 that rotationally drives the rotary drum 4 via the chain 8, and combustion exhaust gas generated in the combustion chamber 5 And a gas discharge port 10 for discharging the gas to the outside.
[0020]
  When the waste is pyrolyzed in the rotating drum 4, residue 12 and pyrolytic gas are generated in the rotating drum 4. The other end side of the rotating drum 4 is connected to the outlet hood 11, and the generated residue 12 and pyrolysis gas areExit hood 11It is sent out toward the. The pyrolysis gas having a low specific gravity is sent to the gas reformer 13 through a connecting pipe 11 a provided at the upper part of the outlet hood 11. The pyrolysis gas sent is subjected to a reforming process and is discharged from the discharge port 13a to a gas purification device not shown.
[0021]
On the other hand, a residue introduction duct 14 is disposed at the bottom of the outlet hood 11, and the residue 12 falls downward through the residue introduction duct 14. In the residue introduction duct 14, an upper damper 15 and a lower damper 16 having a hinge structure and capable of rotating within a predetermined angle range are disposed. These two dampers are prevented from being opened at the same time. This is because the inside of the rotating drum 4 needs to be maintained at a negative pressure and maintained in an oxygen-free state, but if both of them are opened simultaneously, air enters the rotating drum 4 and cannot maintain the oxygen-free state. .
[0022]
A shooter portion 17 having a bent shape is formed at a downstream side portion of the residue introduction duct 14 where the lower damper 16 is disposed, and an air shock hammer 18 is attached to the outside of the shooter portion 17. The air shock hammer 18 is capable of giving an impact with a predetermined strength to the shooter unit 17 when compressed air is sent from an air supply source (not shown).
[0023]
A residue cooler 19 having a rotating drum 20 is installed below the pyrolysis furnace 3. The residue 12 that has fallen from above through the shooter 17 is fed into the rotary drum 20 of the residue cooler 19 via the inlet hood 21. The residue cooler 19 includes a rotating drum 20, a cooling chamber 22 disposed so as to surround the outer side of the intermediate portion of the rotating drum 20, and a plurality of cooling units attached to the cooling chamber 22 to cool the rotating drum 20 with cooling water. A cooling nozzle 23, a cooling water discharge port 24 for discharging and circulating the cooling water from the cooling chamber 22, a pair of support rollers 25 and 25 for supporting one end side and the other end side of the rotating drum 20, and a chain And a drive motor 27 that rotationally drives the rotary drum 20 via 26.
[0024]
An outlet hood 28 is connected to the downstream end of the rotary drum 20, and a residue discharge duct 29 is disposed at the bottom of the outlet hood 28. An upper damper 30 and a lower damper 31 are disposed in the residue discharge duct 29. Similarly to the dampers 15 and 16, these dampers 30 and 31 are also prevented from being opened simultaneously. Then, the residue 12 falling downward from the lower damper 31 is sent to a granulating apparatus (not shown), where sorting and granulation are performed to recycle.
[0025]
The residue introduction duct 14, the upper damper 15, the lower damper 16, the shooter 17, and the air shock hammer 18 disposed between the outlet hood 11 and the inlet hood 21 leave the residue 12 from the pyrolysis furnace 3. A residue discharge device for discharging to the cooler 19 is configured (hereinafter, in this specification, a method using two dampers in this way is referred to as a “double damper method”). The residue discharge duct 29, the upper damper 30, and the lower damper 31 disposed below the outlet hood 28 constitute a residue discharge device for discharging the residue 12 from the residue cooler 19 to the granulating device. is doing.
[0026]
  A series of operations of the entire apparatus shown in FIG. 1 is controlled by a control device 32 having a residual discharge control means 33. The residue discharge control means 33 controls the dampers 15, 16, 30, 31, the air shock hammer 18, and the drive motors 9, 27. Each damper 15, 16, 30, 31 is configured to send a fully closed signal to the residual discharge control means 33 when in the fully closed state, and the residual discharge control means 33 sends a fully closed signal. If there is a damper that is not received,Not fully closedIt comes to discriminate.
[0027]
FIG. 2 is a view taken along the line II-II in FIG. As shown in this figure, a drop port 11b is formed in the vicinity of the connection portion of the residue introduction duct 14 at the bottom of the outlet hood 11 and slightly below the rotating drum 4 rotating in the arrow Y1 direction. One end side of the emergency duct 34 is connected to the drop port 11b, and the other end side of the emergency duct 34 is connected to a char emergency storage tank 35 having a manhole 35a. An emergency valve 36 that opens and closes in the direction of the arrow Y2 is attached to the dropping port 11b, and a gate valve 37 that opens and closes in the direction of the arrow Y3 is attached in the middle of the emergency duct 34. The emergency valve 36 and the gate valve 37 are opened and closed by a manual operation by an operator.
[0028]
Next, the operation of FIGS. 1 and 2 will be described. The waste thrown into the top inlet of the waste throwing device 1 is sent out into the rotary drum 4 by the rotary screw 2. Although the rotating drum 4 is heated by the burner 6, since it is rotated by the drive motor 9 via the chain 8, the waste in the rotating drum 4 is heated uniformly. The heated waste is pyrolyzed into pyrolysis gas and residue 12, and the pyrolysis gas is sent from the outlet hood 11 through the connecting pipe 11a to the gas reformer 13 where it is reformed.
[0029]
On the other hand, the residue 12 falls from the bottom of the outlet hood 11 into the residue introduction duct 14. The upper damper 15 and the lower damper 16 disposed in the residue introduction duct 14 are initially fully closed, and the residue discharge control means 33 fully opens only the upper damper 15 for a predetermined time at a predetermined time. As a result, the residue 12 is accumulated on the lower damper 16. Next, the residue discharge control means 33 fully closes the fully opened upper damper 15, then fully opens the lower damper 16, and drops the accumulated residue 12 into the shooter unit 17. As described above, since either the upper damper 15 or the lower damper 16 is always in a fully closed state, even if air exists on the downstream side of the lower damper 16, this air is used in the pyrolysis furnace 3. There is no intrusion into the rotating drum 4.
[0030]
When the residue 12 falls into the shooter portion 17, the shape of the shooter portion 17 is a slide shape having a downward slope that does not stop midway, so most of the residue 12 is the entrance hood 21. The residue is smoothly fed into the rotary drum 20 of the cooler 19. At this time, the residual discharge control means 33 operates the air shock hammer 18 to give a shock of a predetermined strength to the shooter unit 17. Therefore, even if the bundle of wires described above is mixed with the residue 12, the bundle of wires is fed into the rotary drum 20 without being caught in the middle of the shooter portion 17 due to the impact of the air shock hammer 18.
[0031]
The rotating drum 20 receives the cooling water jet from the cooling nozzle 23 attached to the cooling chamber 22, but is rotated by the drive motor 27 via the chain 26, so that the residue sent into the rotating drum 20. 12 is evenly cooled.
[0032]
The cooled residue 12 falls from the bottom of the outlet hood 28 into the residue discharge duct 29. The upper damper 30 and the lower damper 31 disposed in the residue discharge duct 29 are initially fully closed, and the residue discharge control means 33 fully opens only the upper damper 30 for a predetermined time at a predetermined time. As a result, the residue 12 is accumulated on the lower damper 31. Next, the residue discharge control means 33 fully closes the fully opened upper damper 30, then fully opens the lower damper 31, and drops the accumulated residue 12 to the granulator side. As described above, since either the upper damper 30 or the lower damper 31 is always in a fully closed state, even if air exists on the downstream side of the lower damper 31, this air remains in the residual cooler 19. There is no entry into the rotating drum 20.
[0033]
Next, opening / closing operations of the upper damper 15 and the lower damper 16 will be described in detail. Note that the upper damper 30 and the lower damper 31 are the same as the dampers 15 and 16, and thus the description thereof is omitted. FIG. 3 is a time chart showing the open / closed state of the upper damper 15 and the lower damper 16, (a) is normal, (b) is when the upper damper 15 is bitten, and (c) is the lower damper 16. Each case is shown when biting occurs.
[0034]
  3A, at time t1, the upper damper 15 is changed from the fully closed state to the fully opened state by the control command from the residue discharge control means 33, and the residue 12 stored on the upper side of the upper damper 15 is the lower damper. Falls on 16. Next, at time t2, the upper damper 15 that has been fully opened becomes fully closed (at this time, the residual discharge control means 33 indicates that it is fully closed by a fully closed signal from the upper damper 15).Checking), Dropping of the residue 12 onto the lower damper 16 is stopped.
[0035]
Then, at time t3 after a delay time T0 from time t2, the lower damper 16 that has been fully closed until then is fully opened (the remaining discharge control means 33 is the upper damper that fully lowers the lower damper 16). It is a precondition that it is confirmed that 15 is fully closed), and the residue 12 placed on the lower damper 16 falls to the shooter portion 17. Next, at time t4, the lower damper 16 that has been fully opened is fully closed, and the dropping of the residue 12 onto the shooter unit 17 is stopped.
[0036]
When the upper damper 15 is fully closed at time t2, the residue 12 is accumulated on the upper damper 15 again. At time t5, the same operation as described above is repeated.
[0037]
In the above operation, the upper damper 15 is fully closed at time t2, and the lower damper 16 is fully opened after the delay time T0 has elapsed. That is, one of the dampers 15 and 16 is always in a fully closed state, and a state in which both dampers are simultaneously opened does not occur. Accordingly, even if air is present on the residue cooler 19 side, this air does not enter the pyrolysis furnace 3 side through the residue introduction duct 14, and the negative pressure is always maintained in the rotary drum 4. The residue 12 can be discharged from the pyrolysis furnace 3 side to the residue cooler 19 side while maintaining the oxygen-free state.
[0038]
By the way, as described above, a bundle of wires may be mixed in the residue 12, and the conventional residual discharge device of the rotary screw type is structurally smooth when this bundle of wires is mixed. It was a big weak point that it was difficult to discharge easily. In the thermal decomposition processing apparatus of FIG. 1, since a double damper type residue discharging apparatus is adopted, it is not difficult to discharge even if a bundle of wires is mixed, and the above-mentioned weak point is considerably improved. It has become a thing. However, depending on the degree of growth and shape of the wire bundle, the wire bundle is caught near the damper and bitten, and even with a double damper type residual discharge device, it interferes with the smooth opening and closing operation of the damper. Can be considered. If one of the dampers is opened without the other damper being fully closed, air from the downstream side is allowed to enter the pyrolysis furnace 3 side. Therefore, in such a case, the residual discharge device according to the present embodiment is bitten by causing the damper that is not fully closed to open / close a plurality of set times (usually twice). The bundle of wires is removed from the damper.
[0039]
That is, in FIG. 3B, at time t1, the upper damper 15 is changed from the fully closed state to the fully opened state by the control command from the residue discharge control means 33, and the residue 12 stored on the upper side of the upper damper 15 is It falls on the lower damper 16. Next, at time t11, the upper damper 15 that has been fully opened should be fully closed. However, since the bundle of wires is engaged, the upper damper 15 is not fully closed and remains at an intermediate opening. Become. Therefore, when the residual discharge control means 33 causes the upper damper 15 to perform the full opening operation again at time t12 when a predetermined time has elapsed, the bundle of wires that have been bitten by the upper damper 15 by this full opening operation is swung downward. Be dropped. When the upper damper 15 is fully closed again at time t2, the bundle of wires is removed, so that the upper damper 15 is in a fully closed state without any trouble and a fully closed signal is sent to the residual discharge control means 33. returned. Thereafter, as in the case of FIG. 3A, the lower damper 16 is opened and closed.
[0040]
FIG. 3C shows a case where a bundle of wires is caught in the lower damper 16. At time t1, the upper damper 15 changes from the fully closed state to the fully opened state by a control command from the residue discharge control means 33, and the residue 12 stored on the upper side of the upper damper 15 falls onto the lower damper 16. Next, at time t2, the upper damper 15 that has been fully opened is fully closed, and the fall of the residue 12 onto the lower damper 16 is stopped. Then, at time t3 after a delay time T0 from time t2, the lower damper 16 that has been fully closed until then is fully opened, and the residue 12 that has been placed on the lower damper 16 falls to the shooter unit 17. .
[0041]
Thereafter, at time t31, the lower damper 16 that has been fully opened should be fully closed, but since the bundle of wires is engaged, the lower damper 16 is not fully closed and remains at an intermediate opening. Become. Therefore, when the residual discharge control means 33 causes the lower damper 16 to perform the full opening operation again at the time t32 when a predetermined time has elapsed, the bundle of wires that have been bitten by the lower damper 16 by this full opening operation is swung downward. Be dropped. When the lower damper 16 is again fully closed at time t4, the bundle of wires is removed this time, so that the lower damper 16 is in a fully closed state without any trouble and a fully closed signal is sent to the residual discharge control means 33. returned.
[0042]
As described above, even if a bundle of wires is caught in the upper damper 15 or the lower damper 16 (or the upper damper 30 or the lower damper 31), by causing the damper to repeatedly open and close a set number of times, This bundle of wires can be removed. However, depending on the case, even if the damper performs the opening / closing operation a set number of times, the residual discharge control means 33 may not be able to confirm the fully closed state of the damper. As such a case, it is conceivable that the sensor part of the damper that sends out the fully-closed signal is broken, or that the bundle of wires in the damper is very strong. In such a case, it is necessary to temporarily stop the input of the waste into the waste input device 1, and the worker must check the damper and take appropriate measures.
[0043]
Therefore, in such a case, the residual discharge control means 33 of the present embodiment sends an abnormal alarm signal to a monitoring device (not shown) so as to alert the monitoring staff. Further, the residual discharge control means 33 further reduces the rotational speed of the drive motor 9 so as to rotate the rotating drum 4 in the low speed mode (for example, a rotational speed that is about a half of that during normal operation). . Thereby, since the discharge amount of the residue 12 from the pyrolysis furnace 3 is reduced, a worker who goes straight to the site can easily perform an inspection operation or the like. Here, the rotation of the rotating drum 4 is continued at a low speed but is not stopped, and the heating by the burner 6 is still performed, and if it is stopped, the same portion is heated for a long time and the part is damaged. Because it will do. Therefore, when the bundle of wires is caught in the upper damper 30 or the lower damper 31 instead of the dampers 15 and 16 side, and the inspection work of the worker is necessary, the residual discharge control means 33 is used as the residual cooler 19. The rotary drum 20 may be rotated in the low speed mode, or may be stopped.
[0044]
The above-described inspection work by the worker is usually considered to take less time and be completed in a short time, but sometimes it may take a long time. It is not preferable that the waste input into the waste input device 1 is stopped and a large amount of residue 12 that is not discharged remains in the rotating drum 4 for a long time. Therefore, in such a case, in this embodiment, the operator can open the emergency valve 36 in FIG. 2 so that the residue 12 can be dropped into the char emergency storage tank 35.
[0045]
Here, the gate valve 37 is normally opened and operated, and the residue 12 can be dropped into the char emergency storage tank 35 as soon as the emergency valve 36 is opened. Moreover, the capacity | capacitance of the char emergency storage tank 35 shall be a magnitude | size which can store all the remainders 12 in the rotating drum 4 at least. Since the drop port 11b is located slightly obliquely below the side just below the rotary drum 4, most of the residue 12 from the rotary drum 4 rotating in the direction of the arrow Y1 is placed in the emergency duct 34. Can be sent.
[0046]
After removing the residue 12 from the inside of the rotary drum 4 in this manner, the worker performs a damper inspection work, a repair work, and the like, and resumes the introduction of the waste into the waste input device 1 after the repair. At this time, the worker closes the gate valve 37 before opening again, opens the manhole 35a, scrapes out the residue 12 therein, and prepares for the next long-term inspection work. Thus, since the pyrolysis apparatus according to the present embodiment is configured to include the char emergency storage tank 35, even if the inspection work of the worker takes a long time, the kiln, the reformer, etc. The waste disposal operation can be resumed in a short time without cooling the thermal equipment.
[0047]
In the thermal decomposition processing apparatus having the configuration shown in FIG. 1 described above, the residue discharging apparatus employs a double damper system having a simpler structure than the rotating screw system, so that maintenance work such as cleaning work can be easily performed. Further, it is advantageous in terms of cost. As described above, the discharging operation for the residue in which the bundle of wires may be mixed can be performed more smoothly than the rotating screw type.
[0048]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a thermal decomposition apparatus that can smoothly perform a residue discharging operation, that is easy to perform maintenance work, and that is advantageous in terms of cost.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a thermal decomposition processing apparatus according to an embodiment of the present invention.
FIG. 2 is a view taken along the line II-II in FIG.
3 is a time chart showing an open / closed state of the upper damper 15 and the lower damper 16 in FIG. 1, where (a) is normal, (b) is when the upper damper 15 is bitten, and (c) is lower. Each of the cases when the damper 16 is bitten is shown.
FIG. 4 is a block diagram showing an example of a conventional pyrolysis processing system.
[Explanation of symbols]
1 Waste input device
2 Rotating screw
3 Pyrolysis furnace
4 Rotating drum
5 Combustion chamber
6 Burner
7 Support roller
8 Chain
9 Drive motor
10 Gas outlet
11 Exit hood
11a Connecting pipe
11b Drop port
12 Remaining
13 Gas reformer
13a outlet
14 Residue introduction duct
15 Upper damper
16 Lower damper
17 Shooter
18 Air Shock Hammer
19 Residual cooler
20 Rotating drum
21 Entrance hood
22 Cooling room
23 Cooling nozzle
24 Cooling water outlet
25 Support roller
26 chain
27 Drive motor
28 Exit hood
29 Residual discharge duct
30 Upper damper
31 Lower damper
32 Controller
33 Residue discharge control means
34 Emergency duct
35 Char emergency storage tank
35a Manhole
36 Emergency valve
37 Gate valve
101 Pretreatment device
102 Waste supply device
103 Pyrolysis furnace
104 Gas reformer 1
105 Gas purification device
106 Residue discharge device
107 Residual cooler
108 Residue discharge device
109 Granulator

Claims (6)

A pyrolysis furnace for thermally decomposing an object to be processed, which is input from an object input device, in a heated rotating drum;
A residue cooler installed at a position below the pyrolysis furnace, introducing a residue discharged from the pyrolysis furnace at the time of thermal decomposition of the object to be processed, and cooling it in a cooled rotary drum; ,
A thermal decomposition treatment apparatus comprising:
A residue introduction duct disposed between the pyrolysis furnace and the residue cooler for introducing residue discharged from the pyrolysis furnace into the residue cooler;
An upper damper and a lower damper for introduction disposed in the residue introduction duct;
When introducing the residue discharged from the pyrolysis furnace into the residue cooler, opening and closing control of both dampers is performed so that both the introduction upper damper and the lower damper are not opened. Residual discharge control means;
And the residual discharge control means detects that the closing operation is not completed within a predetermined time even though the closing operation is controlled for the upper damper or the lower damper for introduction. , Once the opening operation is controlled for the damper, and then the closing operation is repeated again.
The thermal decomposition processing apparatus characterized by the above-mentioned . A pyrolysis furnace for thermally decomposing an object to be processed, which is input from an object input device, in a heated rotating drum;
A residue cooler installed at a position below the pyrolysis furnace, introducing a residue discharged from the pyrolysis furnace at the time of thermal decomposition of the object to be processed, and cooling it in a cooled rotary drum; ,
A thermal decomposition treatment apparatus comprising:
A residue introduction duct disposed between the pyrolysis furnace and the residue cooler for introducing residue discharged from the pyrolysis furnace into the residue cooler;
An upper damper and a lower damper for introduction disposed in the residue introduction duct;
When introducing the residue discharged from the pyrolysis furnace into the residue cooler, opening and closing control of both dampers is performed so that both the introduction upper damper and the lower damper are not opened. Residual discharge control means;
The provided, on the downstream portion of the arrangement position of the lower damper in the left inlet duct, to form a shooter portion having a curved shape, further on the outer side of the shooter section, applying an impact of a predetermined strength to the shooter section Air shock hammer that can be attached,
The thermal decomposition processing apparatus characterized by the above-mentioned . The residual discharge control means, when the completion of the closing operation of the damper cannot be detected even if the control of the closing operation for the upper damper or the lower damper for introduction is repeated a set number of times, the thermal decomposition is performed. By lowering the rotational speed of the rotary drum of the furnace than during normal operation, the amount of residual discharge from the pyrolysis furnace is reduced.
The thermal decomposition processing apparatus according to claim 1 . A char emergency storage tank installed at a position below the pyrolysis furnace and having a volume capable of storing a residue from the pyrolysis furnace by a predetermined amount;
In the vicinity of the residue introduction duct, the emergency duct for dropping the residue discharged from the pyrolysis furnace to the char emergency storage tank, in parallel with this,
With
The residue discharge control means is in a state where the number of rotations of the rotary drum of the pyrolysis furnace is lower than that during normal operation, and when the state where the completion of the closing operation of the damper cannot be detected continues for a predetermined time or longer. The residue generated in the pyrolysis furnace is dropped into the char emergency storage tank through the emergency duct.
The thermal decomposition processing apparatus according to claim 3 . A residue discharge duct disposed on the downstream side of the residue cooler and for discharging the residue cooled by the residue cooler to the outside;
An upper damper and a lower damper for discharge disposed in the residue discharge duct;
With
When the residue cooled by the residue cooler is discharged to the outside, the residue discharge control means prevents both the upper and lower dampers for the discharge from being opened. Open / close control ,
Further, when the residual discharge control means detects that the closing operation is not completed within a predetermined time even though the closing operation is controlled for the upper damper or the lower damper for discharging, Once the control of the opening operation is performed on the damper, then the control of the closing operation is repeated again.
The thermal decomposition processing apparatus according to any one of claims 1 to 4, wherein The residual discharge control means performs the residual cooling when the completion of the closing operation of the damper cannot be detected even if the control of the closing operation for the upper damper or the lower damper for discharging is repeated a set number of times. By reducing the rotational speed of the rotating drum of the machine lower than that during normal operation or stopping the rotation, the residual discharge amount from the residual cooler is reduced or the residual is not discharged.
The thermal decomposition processing apparatus according to claim 5 .

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