Dry distillation gasification incineration treatment equipment

Abstract

To provide a carbonization gasification incinerator capable of decreasing an amount of water to be supplied to a water jacket or a cooling furnace.SOLUTION: A carbonization gasification incinerator 1 comprises: carbonization furnaces 2a, 2b that carbonize waste A to generate combustible gas; a combustion furnace 4 that combusts combustible gas introduced from the carbonization furnaces 2a, 2b; discharge means 29 that discharges combustion exhaust discharged from the combustion furnace 4; and a cooling furnace 31 that cools combustion exhaust midway in the discharge means 29. The carbonization furnaces 2a, 2b comprises water jackets 41a, 41b disposed in the furnace wall and separated from the inside of the furnace, respectively. The carbonization gasification incinerator further comprises: hot water extraction means 43, 49 that extract hot water from the water jackets 41a, 41b or the cooling furnace 31; cooling means 44 that cools hot water to obtain cooled water; and cold water feeding means 47, 50 that feed cold water to the water jackets 41a, 41b or the cooling furnace 31.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pyrolysis, gasification and incineration treatment apparatus. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known a dry distillation / gasification incineration processing apparatus that includes a dry distillation furnace and a combustion furnace, and introduces combustible gas generated in the dry distillation furnace into the combustion furnace for complete combustion (see, for example, Patent Document 1).

[0003] In the dry distillation / gasification incineration treatment device, a part of the waste such as waste tires stored in the dry distillation furnace is burned, and the remaining part of the waste is dry-distilled (pyrolyzed) by the combustion heat to generate combustible gas, and the combustible gas generated by the dry distillation / gasification is introduced from the dry distillation furnace to the combustion furnace for combustion. The combustion exhaust from the combustion furnace is cooled, desulfurized, and deodorized by a cooling furnace and a quenching tower, and then removed fly ash, soot, and the like by a bag filter, and then released into the atmosphere from a chimney.

[0004] At this time, in the dry distillation furnace, the amount of combustible gas generated is feedback controlled by adjusting the amount of oxygen supplied required for the dry distillation of the waste, and as a result, the temperature inside the combustion furnace is maintained at a predetermined temperature by burning the combustible gas.

[0005] On the other hand, in the dry distillation furnace, it is necessary to protect the furnace body from the heat generated by the dry distillation of the waste, but if the furnace body is made of a refractory material such as firebricks, the refractory material accumulates heat, which may make the feedback control difficult. In order to solve this problem, the dry distillation furnace is provided with a water jacket in the furnace wall that is isolated from the inside of the furnace, and the furnace body is cooled and protected by water supplied to the water jacket.

[0006] In the cooling furnace, the combustion exhaust gas is cooled by heat exchange between the combustion exhaust gas and water circulated through a water passage provided in the furnace wall. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2020-133990 A Summary of the Invention [Problem to be solved by the invention]

[0008] In the dry distillation gasification incineration treatment device, when the dry distillation of the waste is completed in the dry distillation furnace, the waste is incinerated, but at this time the temperature inside the dry distillation furnace reaches about 1000°C, the water in the water jacket boils and evaporates, and it is necessary to replenish the water lost due to evaporation. Similarly, the water circulating in the cooling furnace also needs to be replenished to make up for the amount lost due to evaporation.

[0009] However, when the dry distillation gasification incineration treatment device is installed in a location where industrial water is scarce, such as a mountainous region, it may be difficult to secure a sufficient amount of water, and it is desirable to minimize the amount of water supplied to the water jacket or cooling furnace.

[0010] In view of the above circumstances, an object of the present invention is to provide a dry distillation / gasification incineration treatment apparatus capable of reducing the amount of water supplied to the water jacket or the cooling furnace. [Means for solving the problem]

[0011] In order to achieve the above object, the dry distillation gasification incineration treatment apparatus of the present invention comprises a dry distillation furnace which burns a part of the stored waste while dry distilling the remainder of the waste by the combustion heat to generate combustible gas, a combustion furnace which burns the combustible gas introduced from the dry distillation furnace, a discharge means which discharges the combustion exhaust gas discharged from the combustion furnace, and a cooling furnace which cools the combustion exhaust gas on the way of the discharge means, and the dry distillation furnace is provided with a water jacket in the furnace wall which is isolated from the inside of the furnace, the dry distillation gasification incineration treatment apparatus further comprises a supply means for supplying cooling water to the water jacket, a hot water extraction means for extracting hot water from the water jacket or the cooling furnace, a cooling means for cooling the hot water extracted by the hot water extraction means to obtain cold water, and a cold water supply means for supplying the cold water cooled by the cooling means to the water jacket or the cooling furnace, and at the stage where the waste is incinerated in the dry distillation furnace, water is supplied from the supply means to the water jacket. ,the The minimum necessary to keep the water level at a safe level of Add a sufficient amount of cooling water And by reducing the supply of oxygen to the dry distillation furnace, When waste is incinerated Heat of combustion of said waste Reduce ,the In status The hot water taken out from the water jacket by the hot water taking-out means The cooling means Cool The present invention is characterized in that the In the dry distillation gasification incineration treatment apparatus of the present invention, the hot water taken out from the water jacket or the cooling furnace by the hot water taking-out means is cooled by the cooling means to produce cold water, and the cold water is supplied to the water jacket or the cooling furnace by the cold water supplying means. Therefore, boiling and evaporation of water in the water jacket or the cooling furnace can be suppressed, and the amount of water supplied to the water jacket or the cooling furnace can be reduced.

[0012] In the dry distillation gasification incineration treatment apparatus of the present invention, it is preferable that the cooling means controls the temperature of the hot water to be in the range of 80 to 95° C. By the cooling means controlling the temperature of the hot water to be in the above range, boiling and evaporation of water in the water jacket or the cooling furnace can be reliably suppressed.

[0013] In the dry distillation gasification incineration treatment apparatus of the present invention, the cooling means may be, for example, a radiator equipped with a cooling fan that blows air onto the hot water extracted by the hot water extraction means to cool it. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a system configuration diagram showing one example of the configuration of a dry distillation gasification incineration treatment apparatus of the present invention. [Diagram 2] FIG. 2 is a diagram showing the configuration of piping between a dry distillation furnace and a cooling furnace and a radiator in the dry distillation gasification incineration treatment apparatus of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0016] The dry distillation, gasification and incineration treatment device 1 of this embodiment includes, for example, as shown in FIG. 1, two dry distillation furnaces 2a, 2b that store waste A such as waste tires and perform dry distillation, gasification and incineration of the waste A, and a combustion furnace 4 connected to the dry distillation furnaces 2a, 2b via gas passages 3a, 3b.

[0017] The dry distillation furnaces 2a, 2b are formed with inlets 6a, 6b equipped with openable / closable input doors 5a, 5b on their upper surfaces, respectively, so that waste A can be input into the dry distillation furnaces 2a, 2b through the inlets 6a, 6b. The lower parts of the dry distillation furnaces 2a, 2b are provided with openable / closable bottom doors 7a, 7b. When the input doors 5a, 5b and the bottom doors 7a, 7b are closed, the inside of the dry distillation furnaces 2a, 2b is substantially isolated from the outside.

[0018] The dry distillation furnaces 2a and 2b are provided with water jackets (not shown) in their furnace walls, which are isolated from the insides of the dry distillation furnaces 2a and 2b.

[0019] Below the bottom doors 7a, 7b, there are formed empty chambers 8a, 8b isolated from the inside of the dry distillation furnaces 2a, 2b, and the empty chambers 8a, 8b communicate with the inside of the dry distillation furnaces 2a, 2b via a plurality of air supply nozzles 9a, 9b provided on the bottom doors 7a, 7b. Dry distillation oxygen supply passages 10a, 10b are connected to the empty chambers 8a, 8b at the bottom of the dry distillation furnaces 2a, 2b, respectively, and the dry distillation oxygen supply passages 10a, 10b are connected via an oxygen supply passage 11 to an oxygen supply source 12 constituted by a forced draft fan or the like.

[0020] The dry distillation oxygen supply lines 10a, 10b are provided with control valves 13a, 13b, and the openings of the control valves 13a, 13b are controlled by valve drivers 14a, 14b. In this case, the valve drivers 14a, 14b are controlled by a control device 15 constituted by an electronic circuit including a CPU, etc.

[0021] Further, ignition devices 16a, 16b for igniting the waste A contained in the dry distillation furnaces 2a, 2b are attached to the lower portions of the dry distillation furnaces 2a, 2b, respectively. The ignition devices 16a, 16b are composed of ignition burners or the like, and supply a combustion flame to the waste A by burning auxiliary fuel supplied from fuel supply devices 17a, 17b via fuel supply passages 18a, 18b.

[0022] The combustion furnace 4 comprises a burner section 19 for mixing the combustible gas produced by the dry distillation of the waste A with oxygen (air) necessary for its complete combustion, and a combustion section 20 for burning the combustible gas mixed with oxygen (air), and the combustion section 20 is connected to the burner section 19 on the downstream side of the burner section 19. Gas passages 3a and 3b are connected to the upstream side of the burner section 19 via dampers 21a and 21b, respectively, and the combustible gas produced by the dry distillation of the waste A in the dry distillation furnaces 2a and 2b is introduced into the burner section 19 through the gas passages 3a and 3b.

[0023] An empty chamber (not shown) isolated from the inside of the burner section 19 is formed on the outer periphery of the burner section 19, and the empty chamber communicates with the inside of the burner section 19 via a plurality of nozzle holes (not shown) drilled on the inner periphery of the burner section 19. A combustion oxygen supply passage 22 branching off from the oxygen supply passage 11 is connected to the empty chamber.

[0024] A control valve 23 is provided in the combustion oxygen supply passage 22, and the opening degree of the control valve 23 is controlled by a valve driver 24. In this case, the valve driver 24 is controlled by the control device 15.

[0025] A combustion device 25 is attached upstream of the burner section 19. The combustion device 25 is composed of an ignition burner or the like, and ignites the combustible gas introduced into the burner section 19 or heats the combustion furnace 4 by burning auxiliary fuel supplied from a fuel supply device 26 through a fuel supply passage 27.

[0026] A hot water boiler 28 is attached downstream of the combustion section 20 and is heated by the combustion exhaust gas generated by the combustion of the combustible gas in the combustion furnace 4. The combustion exhaust gas discharged from the combustion furnace 4 has a temperature of about 1000°C, and after heating the hot water boiler 28, is discharged into a duct 29a provided on the outlet side of the hot water boiler 28. The duct 29a is connected to the upper end of a cooling furnace 31 via an opening / closing valve 30. The cooling furnace 31 is provided with a water passage through which cooling water flows within the furnace wall, and the combustion exhaust gas at a temperature of about 1000°C is mixed with the water flowing through the water passage. Heat exchange The cooled material is cooled to a temperature of about 500 to 600° C. by the above-mentioned means, and is discharged into a duct 29 b connected to the lower part of the cooling furnace 31 via an on-off valve 32 .

[0027] Meanwhile, a duct 29c branches off from the duct 29a on the upstream side of the on-off valve 30, and the duct 29c is connected to the upper end of a quenching tower 34 via an on-off valve 33. The quenching tower 34 is equipped with a spray 35 that sprays water on the combustion exhaust gas introduced from the duct 29c to cool it, and the spray 35 is connected to a water supply device (not shown) that supplies cooling water and an air compressor (not shown).

[0028] The combustion exhaust cooled in the quench tower is taken out through a duct 29d connected to the lower part of the quench tower via an on-off valve. The duct 29d joins with the duct 29b downstream of the on-off valves 32 and .

[0029] Duct 29b is connected to one end of a bag filter 37, and the exhaust combustion gas introduced from duct 29b into bag filter 37 is mixed with slaked lime and activated carbon supplied from a chemical silo 38 for desulfurization and deodorization. Duct 29e is connected to the other end of bag filter 37, and duct 29e is connected to a chimney 40 via an induction fan 39 that draws in the exhaust combustion gas from the combustion furnace 4. As a result, the exhaust combustion gas flowing through duct 29e is released from the chimney 40 into the atmosphere.

[0030] Further, a duct 29f for discharging combustion exhaust gas when the hot water boiler 28 is not used is provided downstream of the combustion furnace 4. The duct 29f is connected to the duct 29a via an on-off valve 41.

[0031] Next, the incineration treatment of waste A in the dry distillation gasification incineration treatment device 1 will be described using the dry distillation furnace 2a as an example. Note that the treatment when using the dry distillation furnace 2b is the same as the treatment when using the dry distillation furnace 2a, except that a is replaced with b.

[0032] When the waste A is incinerated in the dry distillation gasification incineration treatment device 1, first, the input door 5a of the dry distillation furnace 2a is opened with the bottom door 7a closed, and waste A such as waste tires is input into the dry distillation furnace 2a through the input port 6a. Next, when the control device 15 detects that the input of the waste A into the dry distillation furnace 2a is completed and that the waste A is stored in the dry distillation furnace 2a, the input door 5a is closed to seal the inside of the dry distillation furnace 2a, and the combustion device 25 of the combustion furnace 4 is operated to start preheating the combustion furnace 4.

[0033] Next, when the temperature inside the combustion furnace 4 reaches, for example, 760°C, the control device 15 drives the valve driver 14a to set the opening of the control valve 13a to a predetermined opening, for example, 25%, and the supply of oxygen (air) to the dry distillation furnace 2a begins. Next, when the control device 15 detects that the waste A has been completely fed into the dry distillation furnace 2a, that the waste A is contained in the dry distillation furnace 2a, and that the damper 21a is open, the ignition device 16a of the dry distillation furnace 2a is operated to ignite the waste A, and partial combustion of the waste A begins.

[0034] Next, in the dry distillation furnace 2a, the valve driver 14a is controlled by the control device 15 to gradually increase the opening of the control valve 13a. As a result, the partial combustion of the waste A in the dry distillation furnace 2a gradually expands and stabilizes, and a fire bed is formed at the bottom of the waste A. When the fire bed is formed, the ignition device 16a is stopped, and the heat from the partial combustion of the waste A starts the dry distillation of the other parts of the waste A, starting the generation of combustible gas, which is introduced into the burner section 19 via the gas passage 3a.

[0035] In the burner section 19, the control device 15 drives the valve driver 24 to set the opening of the control valve 23 to a predetermined opening, and oxygen (air) is supplied from the oxygen supply source 12 via the oxygen supply path 11 and the combustion oxygen supply path 22. There, the combustible gas is mixed with the oxygen (air) supplied via the combustion oxygen supply path 22 and ignited by the combustion flame supplied from the combustion device 25, and combustion in the combustion section 20 is started.

[0036] When the generation of combustible gas in the dry distillation furnace 2a becomes active and the combustible gas starts to combust naturally in the combustion furnace 4, the temperature inside the combustion furnace 4 gradually rises and reaches a preset first set temperature, for example, 1000°C.

[0037] When the temperature inside the combustion furnace 4 reaches the first set temperature due to the combustion of the combustible gas, the combustion device 25 is stopped, and the control device 15 adjusts the opening of the control valve 13a so that the temperature inside the combustion furnace 4 is maintained at the first set temperature through the combustion of the combustible gas, thereby feedback-controlling the generation of the combustible gas in the dry distillation furnace 2a.

[0038] The combustion exhaust gas generated by the combustion of the combustible gas in the combustion section 20 is cooled in the hot water boiler 28 and discharged to the duct 29a, or is discharged to the duct 29a via the duct 29f without passing through the hot water boiler 28.

[0039] When the combustion exhaust gas discharged into the duct 29a passes through the hot water boiler 28, it is introduced from the duct 29a into the cooling furnace 31 where it is further cooled and then discharged into the duct 29b. When the combustion exhaust gas does not pass through the hot water boiler 28, it is introduced from the duct 29c into the quenching tower 34 where it is cooled and then discharged into the duct 29b via the duct 29d.

[0040] Next, the combustion exhaust gas discharged into duct 29b is mixed with slaked lime and activated carbon supplied from a chemical silo 38 for desulfurization and deodorization, and is introduced into a bag filter 37 to remove fly ash, dust, etc., before being discharged into duct 29e and further released into the atmosphere from a chimney 40.

[0041] In the incineration treatment of waste A in the dry distillation gasification incineration treatment device 1, the dry distillation furnaces 2a, 2b are cooled by water contained in the water jacket, thereby protecting the furnace body from the heat generated by the dry distillation of the waste, and in the cooling tower 31, the combustion exhaust gas introduced into the cooling tower 31 is cooled by water circulated through the water channel.

[0042] In the dry distillation gasification incineration treatment device 1, the water stored in the water jacket can be circulated to the water channel of the cooling tower 31. In this case, when the dry distillation of the waste A in the dry distillation furnace 2a is completed and the waste A is incinerated, the temperature in the dry distillation furnace 2a reaches about 1000°C, and the water in the water jacket boils and evaporates. For this reason, it becomes necessary to replenish the water lost due to evaporation, but in places where industrial water is scarce, such as mountainous regions, it is difficult to secure a sufficient amount of water.

[0043] Therefore, in the dry distillation gasification incineration treatment apparatus 1, as shown in FIG. 2, the water jackets 41a and 41b of the dry distillation furnaces 2a and 2b are provided with water jackets 41a and 41b. 、41b The cooling tower 31 includes a first hot water conduit 43 as hot water extraction means for extracting hot water from the cooling tower 31, and the first hot water conduit 43 is connected to a plurality of radiators 44 as cooling means for cooling the hot water to obtain cold water. Each radiator 44 includes a cooling fan 45 for cooling the hot water circulating inside the radiator 44. For example, 18 radiators 44 for the cooling tower 31 and two radiators 44 for the dry distillation furnace 2a or the dry distillation furnace 2b are connected to the first hot water conduit 43 in parallel with each other.

[0044] Each radiator 44 is equipped with an outlet conduit 46 for extracting the cold water, and each outlet conduit 46 joins together to form a first cold water conduit 47 as a cold water supply means for supplying cold water to the water jacket 41a, and the first cold water conduit 47 is connected to the water jacket 41a via a first circulation pump 48.

[0045] The water passage 42 of the cooling tower 31 is provided with a second hot water pipe 49 as a hot water extracting means for extracting hot water from the water passage 42, and the second hot water pipe 49 is connected to the first hot water pipe 43 on the upstream side of the plurality of radiators 44. 7 or A second cold water conduit 50 as a cold water supply means for supplying cold water to the water passage 42 branches off from the first cold water conduit 50 , and the second cold water conduit 50 is connected to the water passage 42 via a second circulating pump 51 .

[0046] In the dry distillation gasification incineration treatment apparatus 1, when the operation of the apparatus is started, for example, the first and second circulation pumps 48, 51 are operated in accordance with the operation of the combustion device 25 of the combustion furnace 4. In the water jacket 41a of the dry distillation furnace 2a, when the first circulation pump 48 is operated, hot water taken out from the water jacket 41a is supplied to the radiator 44 via the first hot water conduit 43, and cold water cooled in the radiator 44 is supplied to the water jacket 41a via the outlet conduit 46 and the first cold water conduit 47, thereby being circulated.

[0047] In addition, in the water passage 42 of the cooling tower 31, when the second circulation pump 51 is operated, the hot water extracted from the water passage 42 is supplied to the radiator 44 via the hot water conduit 49 and the second first hot water conduit 43, and the cold water cooled in the radiator 44 is supplied to the water passage 42 via the extraction conduit 46, the first cold water conduit 47, and the second cold water conduit 50, thereby circulating.

[0048] Here, the radiator 44 controls the temperature of the water stored in the water jacket 41a or the water flowing through the water passage 42 to be in the range of 80 to 95°C by operating or stopping the cooling fan 45. The temperature can be controlled, for example, by providing a temperature detection means such as a temperature sensor (not shown) in the water jacket 41a and the water passage 42, and operating the cooling fan 45 when the temperature detected by the temperature detection means exceeds 90°C, and stopping the cooling fan 45 when the temperature falls below 80°C. Detection of the temperature detected by the temperature detection means and operation or stopping of the cooling fan 45 can be performed by the control device 15 shown in FIG. 1.

[0049] As a result, in the dry distillation gasification incineration treatment apparatus 1 of this embodiment, the water jacket 41a of the dry distillation furnace 2a, 2b 、 The water jacket 41a can suppress boiling and evaporation of the water stored in the water jacket 41b or the water flowing through the water passage 42 of the cooling furnace 31. 、41b Alternatively, the amount of water replenished to the water passage 42 can be reduced.

[0050] However, in the dry distillation gasification incineration treatment apparatus 1, even if the radiator 44 is used, the temperature of the cooling water in the cooling furnace 31 may rise, boil, and evaporate, and the amount of water to be replenished to the cooling furnace 31 may increase.

[0051] In such a case, the amount of water supplied to the cooling furnace 31 is increased by the minimum necessary amount to keep the water level of the cooling furnace 31 at a safe level, while the first set temperature in the combustion furnace 4 is lowered, for example, from 1000°C to 900°C. Then, the radiator 44 is used to reduce the amount of combustion and exhaust of the combustible gas. Before By cooling the cooling water, boiling and evaporation of the cooling water can be suppressed, and the operation of the dry distillation gasification incineration treatment apparatus 1 can be continued.

[0052] In the dry distillation gasification incineration treatment device 1, for example, when the temperature of the cooling water in the cooling furnace 31 reaches 97°C, the first set temperature can be lowered to 900°C, and when the temperature of the cooling water in the cooling furnace 31 drops to 94°C, the first set temperature can be returned to 1000°C.

[0053] In addition, in the dry distillation gasification incineration treatment device 1, even if the radiator 44 is used at the stage where the waste A is incinerated in the dry distillation furnace 2a, the temperature of the water jacket 41a of the dry distillation furnace 2a may rise, boil, evaporate, and the amount of water supplied to the water jacket 41a may increase.

[0054] In such a case, the amount of water supplied to the water jacket 41a is increased by the minimum necessary amount to keep the water level in the water jacket 41a at a safe level, while the opening degree of the control valve 13a is reduced, for example, from 80% to 50%. Then, the radiator 44 is used to reduce the amount of heat generated when the waste A is incinerated. Before By cooling the cooling water, boiling and evaporation of the cooling water can be suppressed, and the operation of the dry distillation gasification incineration treatment apparatus 1 can be continued.

[0055] In the dry distillation gasification incineration treatment device 1, for example, when the temperature of the cooling water in the water jacket 41a reaches 97°C, the opening degree of the control valve 13a can be reduced to 50%, and when the temperature of the cooling water in the water jacket 41a drops to 94°C, the opening degree of the control valve 13a can be returned to 80%.

[0056] In addition, when the opening degree of the control valve 13a is reduced at the stage where the waste A is incinerated in the dry distillation furnace 2a, unburned gas is generated and flows into the combustion furnace 4, so that the unburned gas needs to be burned in the other dry distillation furnace 2b. However, by reducing the opening degree of the control valve 13a, in anticipation of the time required for the waste A to be incinerated in the dry distillation furnace 2a being extended, the first set temperature in the combustion furnace 4 can be lowered, for example, from 1000 ° C to 900 ° C, so that the time required for the combustible gas generated in the dry distillation furnace 2a to self-combust in the combustion furnace 4 can be extended, and the time required for the waste A to be incinerated can be sufficiently secured. As a result, even if the first set temperature in the combustion furnace 4 is lowered, there is no need to burn auxiliary fuel in the fuel supply device 26, and the dry distillation gasification incineration treatment device 1 can be operated economically.

[0057] It should be noted that when lowering the first set temperature in the combustion furnace 4 or reducing the opening degree of the control valve 13a in the dry distillation furnace 2a, the amount of waste A incinerated per unit time is reduced, so care must be taken. [Explanation of symbols]

[0058] 1... dry distillation gasification incineration treatment apparatus, 2a, 2b... dry distillation furnace, 4... combustion furnace, 29... discharge treatment section, 31... cooling tower, 41a, 41b... water jacket, 43, 49... hot water extraction means, 44... cooling means, 47, 50... cold water supply means.

Claims

1. A dry distillation and gasification incineration treatment apparatus comprising: a dry distillation furnace for burning a part of stored waste and dry distilling the remainder of the waste using the heat of combustion to generate a combustible gas; a combustion furnace for burning the combustible gas introduced from the dry distillation furnace; exhaust means for exhausting the combustion exhaust gas discharged from the combustion furnace; and a cooling furnace for cooling the combustion exhaust gas midway through the exhaust means, the dry distillation furnace being provided with a water jacket in the furnace wall isolated from the inside of the furnace, a supplying means for supplying cooling water to the water jacket, a hot water taking-out means for taking out hot water from the water jacket or the cooling furnace, a cooling means for cooling the hot water taken out by the hot water taking-out means to obtain cold water, and a cold water supplying means for supplying the cold water cooled by the cooling means to the water jacket or the cooling furnace, A dry distillation gasification incineration treatment apparatus characterized in that, at the stage when the waste is incinerated in the dry distillation furnace, the supply means supplies the water jacket with the minimum amount of cooling water necessary to maintain the water level at a safe level, and the supply of oxygen to the dry distillation furnace is reduced to reduce the combustion heat of the waste when the waste is incinerated, and in this state, the hot water extracted from the water jacket by the hot water extraction means is cooled by the cooling means.

2. 2. The dry distillation gasification incineration treatment apparatus according to claim 1, wherein said cooling means controls the temperature of said hot water to be in the range of 80 to 95°C.

3. 3. The dry distillation gasification incineration treatment apparatus according to claim 1 or 2, wherein the cooling means is a radiator equipped with a cooling fan for blowing air onto the hot water extracted by the hot water extraction means to cool it.

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