JP2006132852A - Dehydration crushing method and device, and waste material utilization system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehydration crushing device capable of carrying out drying treatment without using new fossil fuel and preventing a material to be dried from twining around a movable body to damage it in the drying treatment. <P>SOLUTION: The dehydration crushing device is provided with a cylindrical casing 4b equipped with a feed screw 4a for conveying an object to be treated in the axis direction inside, and a compression dehydrating treatment part 4d formed of a cylindrical body reduced in diameter toward the outlet side, at an outlet part 4c of an axial end part of the casing 4b, wherein the object to be treated is twisted and crushed by the twisting force of the feed screw 4a at a boundary part between the compression dehydrating treatment part 4d and the outlet part 4c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a cylindrical casing provided with a feed screw that conveys a processing object in the axial direction therein, and a cylindrical body that is reduced in diameter toward the outlet side at the outlet portion of the axial end portion of the casing. The present invention relates to a dewatering and pulverizing apparatus, a method, and a waste material utilization system using the dewatering and pulverizing apparatus.

  Wood harvested from forests and processed as building materials is shipped after being heated and dried with dry steam generated in a boiler, but because fossil fuel is used as boiler fuel at this time, the production cost There was a problem that increased.

  For this reason, it is considered that combustible waste such as bark generated during the processing of the wood described above is used as fuel for boilers. In general, bark has a high moisture content, and in particular, it is harvested from autumn to winter. Since the bark of the treated tree has an extremely high moisture content due to falling onto wet ground during processing, it is difficult to use it as an effective fuel as it is, and it has been discarded wastefully.

As a system that collects combustible waste with such a high water content by drying and carbonization and recovers it as valuable resources, crushing driftwood etc. with a crusher and drying with hot air from a hot air generator using fossil fuel, A treatment method for carbonizing the dried driftwood pieces in a rotary furnace has been proposed.
Japanese Patent No. 3046776

  However, when long combustible waste such as bark is dried, there is a strong risk of tangling the moving parts such as lifters and stirring blades in the dryer and damaging the machine. If hot air is generated by fossil fuel for processing, it goes against the objective of reducing manufacturing costs by reducing fossil fuel.

  On the other hand, when combustible waste such as bark is dried in the sun, labor costs for the work increase and it takes time due to the weather, and if it cannot be dried sufficiently, fossil as auxiliary fuel There was a problem that it was inferior in economy, such as the need for fuel.

  An object of the present invention is to provide a dewatering and pulverizing apparatus that can perform a drying process without using a new fossil fuel in view of the above-mentioned conventional drawbacks, and that does not cause the object to be dried to get entangled with the movable object during the drying process. In addition, the present invention is to provide an economical waste material utilization system.

  In order to achieve the above object, the dehydrating and crushing method according to the present invention is characterized in that, as described in claim 1, the object to be processed is consolidated along the axial direction in a cylindrical casing. And continuously dewatering while being rotated and conveyed, and imparting resistance to consolidate while suppressing rotation on the processing object downstream side in the conveying direction, and the region provided with the resistance and the The object is to dehydrate and crush the object to be processed in the boundary region of the region that is rotated and conveyed.

  According to the above-described configuration, after the object to be processed is consolidated while being rotated and conveyed and conveyed through the cylindrical casing while being continuously dehydrated, resistance is applied on the downstream side to prevent the rotation. Then, a twisting phenomenon occurs between the rotating part and the restraining part. Due to this twisting phenomenon, the object to be treated is crushed and further dehydration action proceeds.

  According to the first characteristic configuration of the dewatering / pulverizing apparatus according to the present invention, as described in claim 2, a cylindrical casing provided with a feed screw for conveying a processing object in an axial direction thereof, and the casing A dewatering and pulverizing apparatus comprising a compression dehydration processing unit made of a cylindrical body having a diameter reduced toward the outlet side at an outlet portion of an axial end portion, and at a boundary portion between the compression dehydration processing unit and the outlet unit It exists in the point comprised so that the said to-be-processed object may be twisted and crushed with the twisting force by the said feed screw.

  According to the above-described configuration, combustible waste such as bark generated in the lumbering process is consolidated while being transported in the cylindrical casing by the feed screw, the water is squeezed out, and the diameter is further reduced toward the outlet side. In the compression / dehydration processing section, pressing force by combustible waste conveyed by a feed screw from the upstream side acts to achieve further consolidation. Moreover, a twisting force is generated at the boundary between the combustible waste conveyed while being rotated along the inner circumference of the casing by the feed screw and the combustible waste that is only pressed in the axial direction toward the outlet without rotating. Therefore, not only is it compressed and dehydrated, but it is also crushed. That is, even long objects such as bark are not only crushed short by the twisting force, but also the cell membrane is broken by the compressive twisting force, so that the dehydration performance is improved. Moreover, the drying efficiency of the bark or the like in which the cell membrane has been destroyed in this way is dramatically increased compared to the bark or the like having a normal cell membrane.

  As described in the third aspect of the present invention, the second characteristic configuration is that, in addition to the first characteristic configuration described above, the radial end of the feed screw is welded.

  Combustible waste such as bark often falls and accumulates on the ground in the lumbering process, and there is a high possibility that solid foreign substances such as gravel will be mixed when scraping such combustible waste with an accumulation machine such as a backhoe. Become. When the object to be treated mixed with such foreign matter is put into the above-mentioned dewatering and crushing apparatus and rotated and conveyed along the inner periphery of the casing by the feed screw, the inner wall of the cylindrical casing and the radial end of the feed screw are solidified. There is a high possibility that the feed screw is damaged due to the foreign matter being bitten. In such a case, parts need to be replaced, and maintenance costs increase if they occur frequently. Therefore, sufficient strength can be ensured by overlay welding the radial end of the feed screw, and even if the overlay is damaged, repair and repair can be performed sufficiently.

  In the third feature configuration, as described in claim 4, in addition to the first or second feature configuration described above, a drain port is formed at a connection portion between the cylindrical casing and the compression dehydration processing unit. There is in point.

  The combustible waste, which is the object to be treated, will be dehydrated at the boundary between the dehydration processing section, particularly the compression dehydration processing section where the torsional force acts and the outlet section, and a large amount of water will be squeezed out from this section. It is done. When such moisture further flows into the workpiece to be processed on the upstream side, it is possible to eliminate the inconvenience that the effect of dehydration is reduced. Furthermore, crushing proceeds smoothly by dehydration.

  The first characteristic configuration of the waste material utilization system according to the present invention, as described in claim 5, is a dehydrator for dehydrating waste material, a drying device for drying waste material dehydrated by the dehydrator, A combustion furnace using as a fuel waste material dried by a drying device, and a waste heat supply device that supplies waste heat of exhaust gas from the combustion furnace as a drying heat source of the drying device.

  According to the above configuration, the waste material after being dehydrated by the dehydrator can be efficiently dried by drying with the dryer, and the dried waste material can be used as fuel for the combustion furnace. Since the waste heat can be used as a heat source for the drying apparatus, a self-contained and economical waste material utilization system that does not require fossil fuel can be realized.

  In the second feature configuration, as described in claim 6, in addition to the first feature configuration described above, the waste heat supply device includes an exhaust gas supply path for supplying exhaust gas from the combustion furnace to the drying device. A gas supply fan for sending gas to the exhaust gas supply path, and an air mixture device for adjusting the temperature by mixing air into the exhaust gas, the air mixture device being provided upstream of the exhaust gas supply path. There is in point.

  According to the above-described configuration, since the air-fueling device is provided on the upstream side of the exhaust gas supply path from the combustion furnace and adjusted to an appropriate drying temperature, the gas can be sent to the downstream side. It is no longer necessary to adopt a heat-resistant structure, and the equipment cost can be greatly reduced.

  In the third feature configuration, as described in claim 7, in addition to the first or second feature configuration described above, a cyclone for removing dust in the exhaust gas is provided in the exhaust gas supply path. is there.

  If the sparks of the waste material burned up in the combustion furnace rises violently and flows down to the drying device via the exhaust gas supply path, there is a risk that the waste material being dried will ignite and cause an accident, but according to the above configuration, the exhaust gas supply path Since the cyclone provided in the chamber removes dangerous sparks and the like, the safety of the system can be effectively ensured.

  In the fourth feature configuration, as described in claim 8, in addition to any one of the first to third feature configurations described above, the dehydration device is configured by any one of the dehydration crushing devices described above. It is in the point.

  As described above, the waste material such as bark dehydrated by the dewatering and pulverizing apparatus has its cell membrane destroyed at the time of dehydration and pulverization. The drying process can be effectively performed with a heat source.

  The characteristic configuration of the method for treating combustible waste according to the present invention includes, as described in claim 9, a dehydrating and pulverizing step for dehydrating and pulverizing combustible waste generated in a lumbering process of felled wood, and the dehydrating and pulverizing step And a combustion process in which the heat source for drying the lumber from the felled wood is supplied as fuel for the combustion furnace.

  According to the above configuration, combustible waste generated in the process of sawing timber that has been discarded can be used effectively instead of fossil fuel as a heat source for drying lumber. It has become possible to greatly improve. Moreover, unlike fossil fuels, it uses forest energy, so it is also effective in terms of carbon dioxide emission regulations.

  As described above, according to the present invention, a dehydrating and crushing apparatus and an economy that can be dried without using new fossil fuels, and in addition, the object to be dried is not entangled with the movable object and damaged during the drying process. A rich waste material utilization system can be provided.

  Hereinafter, a waste material utilization system and a dewatering / pulverizing apparatus according to the present invention will be described. The waste material utilization system includes a dehydration and pulverization process for decomposing and pulverizing combustible waste generated as a waste material in the lumbering process of felled timber, a drying process for drying after the dehydration and pulverization process, and lumber from the felled timber. As shown in FIG. 1, a waste material which is a combustible waste is a system utilized in a combustible waste processing method comprising a combustion process which is supplied as a fuel for a combustion furnace to which a heat source for drying is supplied. The dehydrating device 4 for dehydrating B, the drying device 5 for drying the waste material B dehydrated by the dehydrating device 4, and the combustion furnace 6 using the waste material B dried by the drying device 5 as fuel. A boiler and a waste heat supply device 7 that supplies waste heat of exhaust gas from the combustion furnace 6 as a drying heat source of the drying device 5 are configured.

  The above-mentioned waste material utilization system is constructed in a lumber plant and will be described in detail below. Combustible waste material B, which is generated when sawing timber harvested from the forest and falls to the ground and is made of bark, is accumulated in the receiving yard 1 by an accumulation device such as a dozer or backhoe. The waste material B introduced into the receiving hopper 2 from the receiving yard 1 is quantitatively supplied to the dehydrating device 4 through the first transport conveyor mechanism 3 a provided with the layer thickness regulating device 30.

  The waste material B dehydrated by the dewatering device 4 is put into the charging hopper 5a of the drying device 5 by the second transport conveyor mechanism 3b, and the waste material B after being heated and dried inside is discharged from the discharge feeder 5b. . The dried waste material B is charged as fuel into the combustion furnace (boiler) 6 through the third transport conveyor mechanism 3c and the fourth transport conveyor mechanism 3d, and excess waste material B is stored in the yard 8 by the fifth conveyor mechanism 3e. Is done.

  As shown in FIG. 2, the drying device 5 stirs the waste material B put in the feeding hopper 5a with a fork-like stirring member 5d attached along a rotating shaft 5c installed in the longitudinal direction of the device. An agitating / conveying mechanism that conveys to the downstream side, a hot air supply path 5e that supplies high-temperature drying gas from the waste heat supply device 7 to the waste material B that is agitated and conveyed, and a gas used for drying in the device And a hot air supply mechanism having an exhaust passage 5f for exhausting air.

  The steam generated in the combustion furnace (boiler) 6 is supplied to the drying process of the lumber which is the final product, and a part of the exhaust gas from the combustion furnace 6 is dried by the waste heat supply device 7 to the drying device 5. After being supplied as a heat source, the dust is removed by the cyclone 6c through the smoke exhaust duct 6a and released into the atmosphere.

  The waste heat supply device 7 is mixed with outside air by the intake damper 7b as an air-mixing device provided in the branch duct 7a formed on the upstream side of the smoke exhaust duct 6a, and the intake damper 7b, and is subjected to a drying process. A first cyclone 7c for removing dust from the exhaust gas adjusted to a suitable temperature and an intake fan 7d provided on the downstream side of the first cyclone 7c are arranged along the exhaust gas supply path 7e.

  After the exhaust gas temperature reaching about 200 ° C. to 900 ° C. mixed with outside air by the air mixture device (intake damper) 7b is adjusted to about 150 ° C., it is supplied to the drying device 5 at about 100 ° C. to 150 ° C. The By providing the air-fuel mixture device 7b on the upstream side of the exhaust gas supply passage 7e, it is not necessary to use an expensive heat-resistant structure in the exhaust gas supply passage 7e on the downstream side of the air-fuel mixture device 7b, greatly reducing the equipment cost. To be able to.

  The first cyclone 7c removes the waste sparks and the like that are wound up in the exhaust gas, and prevents the ignition of the waste materials being dried by causing the sparks to flow down to the drying device 5. Is to secure.

  The smoke exhaust duct 6a is provided with a damper mechanism 6b for adjusting the air volume, and the air volume of the exhaust gas supplied to the drying device 5 is adjusted by the damper mechanism 6b. The exhaust gas from the exhaust passage 5f of the drying device 5 is led to the smoke exhaust duct 6a through the second cyclone 7f and released into the atmosphere. Since the foreign matter removed by the second cyclone 7f is mainly fine particles of the waste material B scattered during drying, the foreign matter is returned to the third transport conveyor mechanism 3c to be used as fuel.

  Below, the said dehydrating apparatus 4 is demonstrated based on FIGS. 3-6. As shown in FIG. 6, the dehydrating device 4 includes a cylindrical casing 4b provided with a feed screw 4a for conveying a waste material B as a processing object in the direction of its axis P, and a shaft of the cylindrical casing 4b. A compression dehydration processing portion 4d formed of a cylindrical body having a diameter reduced toward the outlet side at the outlet portion 4c at the direction end, and the feed at the boundary portion between the compression dehydration processing portion 4d and the outlet portion 4c. The waste material B is twisted and crushed by the twisting force of the screw 4a, so that it is crushed simultaneously with dehydration.

  More specifically, as shown in FIGS. 3 to 6, the dehydrating device 4 is formed with a charging portion 4 g having an opening at the upper portion at the base of the cylindrical casing 4 b that is inclinedly disposed on the device frame 4 f. The waste material B input from the input portion 4g is configured to be conveyed upward by a feed screw 4a that is driven to rotate around an axis P by a geared motor 4i.

  The cylindrical casing 4b is formed such that the upper part in the conveying direction is tapered and the pitch of the feed screw 4a is reduced toward the downstream side, that is, the conveying amount is reduced, thereby It is comprised so that it may compress densely as it is conveyed with the feed screw 4a. A large number of small holes are formed in the lower side wall of the cylindrical casing 4b, and a drainage channel 4n through which water squeezed from the compressed waste material B is drained is provided.

  In the compression dehydration processing unit 4d described above, the side wall is divided into four along the axis P, and the outlet side of the base end side that is pivotably supported is reduced or expanded by the hydraulic mechanism 4j. It is comprised with the compression nail | claw made. When waste material is conveyed from the feed screw 4a while being reduced in diameter by the hydraulic mechanism 4j, the waste material B such as bark is conveyed by the feed screw 4a from the upstream side in the compression / dehydration processing unit 4d. As a result, the pressure is applied to achieve further consolidation, and the dehydration process further proceeds.

  In addition, the waste material B is conveyed while being rotated along the inner periphery of the casing 4b by the feed screw 4a, and the axis P direction toward the discharge portion 4h formed at the tip of the compression / dehydration processing portion 4d without rotation. Since the torsional force acts at the boundary portion with the waste material B that is only pressed against the surface, it is not only compressed and dehydrated but also crushed.

  That is, even long objects such as bark are not only crushed short by the twisting force, but also the cell membrane is broken by the compressive twisting force, so that the dehydration performance is improved. Moreover, in the bark or the like in which the cell membrane has been destroyed in this way, the drying efficiency is dramatically increased compared to a bark or the like in which the cell membrane is normal. Further, since the waste material B containing chopped bark having a length of 50 mm to 1000 mm in the initial stage is divided into a length of several tens of mm by such a crushing treatment, the agitation is performed even if it is put into the drying device 5. The drying process is efficiently performed without being entangled with the member 5d.

  In other words, the dewatering process is continuously performed while rotating and conveying the processing object so as to be compacted in the axial direction in the cylindrical casing, and the rotation of the processing object is suppressed on the downstream side in the conveying direction. A dewatering and crushing method is provided in which a resistance to consolidate is applied and the object to be processed is dewatered and crushed in a boundary region between the region to which the resistance is applied and the region that is conveyed by rotation.

  The downstream end of the cylindrical casing 4b and the casing 4o of the compression / dehydration processing unit 4d are flange-connected, and a ring-shaped seal member with a part missing in the middle of both flanges is located below the missing part 4m. It is sandwiched so as to be positioned, and therefore, a water drain port separated by dehydration is formed.

  The waste material B, which is the object to be processed, will be dehydrated at the boundary between the compression dehydration processing unit 4d and the outlet 4c where the twisting force acts, and a large amount of water is squeezed out from this site. When such moisture further flows into the workpiece on the upstream side, it is configured to eliminate the inconvenience that the effect of the dehydration process is reduced. That is, a dehydrating and crushing apparatus is configured by the dehydrating apparatus 4 described above. Note that the drain outlet is not limited to a part constituted by a seal member that is partially missing, and may be one that forms an opening in the flange portion or a casing in the vicinity thereof, or is formed by another structure. May be used.

  Further, the waste material B introduced into the dewatering device 4 is a waste material that is generated in the lumbering process and dropped onto the ground, so there is a possibility that solid foreign matters such as pebbles are mixed in the feed screw. When transported by 4a, solid foreign substances may be caught between the cylindrical casing 4b and the feed screw 4a may be damaged. Then, it is comprised so that intensity | strength may be ensured by carrying out overlay welding of the radial direction edge part of the said feed screw 4a. Since the thick-wall processing is performed in this way, it is possible to easily repair even if the solid foreign object is caught and damaged, and costly maintenance such as parts replacement is unnecessary.

  The drive control for the above-described dehydrating apparatus 4 will be described based on the flowchart shown in FIG. When the power of the apparatus is turned on, the geared motor 4i is operated to start up the state where the waste material B can be conveyed by the feed screw 4a, and the hydraulic mechanism 4j is driven at a normal pressure to reduce the diameter of the compression claw. The state is set (S1). In this state, the above-described dewatering and crushing process is performed. If the current value I of the geared motor 4i is lower than a predetermined lower limit setting value for 10 minutes during operation (S2), it is determined that there is no waste material B in the cylindrical casing 4b and the operation of the apparatus is automatically stopped. (S11).

  When it is determined in step S2 that the current value I is higher than the predetermined lower limit set value, when the current value I does not exceed the predetermined upper limit set value or within 5 seconds (S3), Returning to step S2 while continuing the operation with hydraulic pressure, when the state where the current value I is higher than the predetermined upper limit set value continues for 5 seconds or longer (S3), the hydraulic circuit of the hydraulic mechanism 4j is switched to the reduced pressure state. Then, the compression force of the compression / dehydration processing unit 4d is reduced by lowering the pressure of the hydraulic cylinder (S4). At this time, the compression claw gradually shifts to the expanded diameter state.

  When the state where the current value I of the geared motor 4i exceeds a predetermined upper limit value continues after the hydraulic pressure is switched to the reduced pressure state (S5), the compression pawl shifts to a fully expanded state in 3 seconds (S8). When 6 seconds have elapsed (S9), the apparatus is stopped for safety (S10).

  When the dehydration and crushing process proceeds in step S5 described above, the current value I decreases and becomes smaller than a predetermined lower limit setting value (S6), the hydraulic circuit is returned to the normal hydraulic pressure (S7). By repeating such control, stable dewatering and crushing operation can be performed without imposing an abnormal load on the apparatus.

  As described above, a dewatering and pulverizing process for decomposing and pulverizing combustible waste, which is a waste material generated in the lumbering process of felled wood, a drying process for performing a drying process after the dewatering and pulverizing process, and lumber from the felled wood A combustible waste treatment method comprising a combustion process that is fed as a fuel for a combustion furnace to which a heat source for drying treatment is supplied is realized. By using such waste material as a fuel, fossil fuel can be used. It is possible to realize a method for treating combustible waste with reduced consumption and high economic efficiency.

FIG. 8 shows data when waste materials are actually processed by the system described above. As shown in FIG. 8, the dehydrating apparatus removes offcuts and bark (bark) having a size of 50 mm to 1000 mm, a moisture content of 68.42%, and a bulk specific gravity of 0.231 t / m ^{3 that} are generated when sawing timber. 4, the water content is 43.65% and the bulk specific gravity is 0.206 t / m ³ in a size of 5 to 100 mm. Further, the water content is 14.4 by drying with the drying device 5. It becomes 75% and the bulk specific gravity is 0.164 t / m ³ , and it is apparent that a water content of 30% or less that can be used as fuel can be secured.

  The table shown in FIG. 9 shows a method 1 for natural drying (sun drying), a method 2 for drying using a dryer, and a method according to the present invention when waste materials are used as fuel for a combustion furnace (boiler). It is a comparison of economics and shows its economics.

  Another embodiment of the present invention will be described below. In the previous embodiment, a description has been given of using a stirring-type drying device as a drying device, but the drying device is not limited to this, and drying by other methods is possible as long as it can be dried using waste heat. An apparatus can also be used. For example, a kiln type drying apparatus can also be used.

  In the above-described system, the degree of drying of the waste material is not particularly limited, and it is sufficient if a moisture content of 30% or less that can be used as fuel can be secured.

  The specific structure of each block described in the above dehydration and pulverization apparatus and the waste material utilization system is not particularly limited to the description of the embodiment, and can be appropriately changed and designed within the scope of the effects of the present invention. Needless to say.

Block diagram of waste material utilization system Configuration diagram of drying equipment Side view of dehydrator Top view of dehydrator Right side view of dehydrator Illustration of dehydrator flowchart Comparison chart of the degree of drying by the drying method for waste materials Comparison of economic efficiency by drying method for waste materials

Explanation of symbols

4: Dewatering crushing device (dehydrating device)
4a: feed screw 4b: cylindrical casing 4c: outlet 4d: compression dehydration processing unit 5: drying device 6: combustion furnace (boiler)
7: Waste heat supply device 7a: Branch duct 7b: Intake damper 7c: First cyclone 7d: Intake fan 7e: Exhaust gas supply path B: Waste material (combustible waste)

Claims (9)

  In the cylindrical casing, while continuously rotating and transporting the processing object so as to be compacted along its axial direction, the dehydration process is continuously performed, and rotation is suppressed with respect to the processing object on the downstream side in the transporting direction. A dehydrating and crushing method in which a resistance to be consolidated is applied and the object to be processed is dehydrated and crushed in a boundary region between the region to which the resistance is applied and the region that is rotated and conveyed. A compression dehydration processing unit comprising a cylindrical casing provided with a feed screw for conveying a processing object in its axial direction inside, and a cylindrical body having a diameter reduced toward the outlet side at the outlet of the axial end of the casing. A dehydrating and crushing apparatus comprising:
A dewatering and crushing apparatus configured to twist and crush the object to be processed by a twisting force generated by the feed screw at a boundary portion between the compression dehydration processing unit and the outlet.   The dewatering and crushing apparatus according to claim 1, wherein a radial end portion of the feed screw is welded.   The dewatering and pulverizing apparatus according to claim 1 or 2, wherein a drain outlet is formed at a connection portion between the cylindrical casing and the compression dehydration processing unit.   A dehydrating device for dehydrating waste material, a drying device for drying the waste material dehydrated by the dehydrating device, a combustion furnace using the waste material dried by the drying device as fuel, and waste gas from the combustion furnace A waste material utilization system comprising a waste heat supply device that supplies heat as a drying heat source of the drying device.   The waste heat supply device has an exhaust gas supply passage for supplying exhaust gas from the combustion furnace to the drying device, a gas supply fan for sending gas to the exhaust gas supply passage, and an air-fuel mixture in which air is mixed into the exhaust gas to adjust the temperature. The waste material utilization system according to claim 4, wherein the air-fuel mixture device is provided on the upstream side of the exhaust gas supply path.   The waste material utilization system according to claim 4 or 5, wherein a cyclone for removing dust in the exhaust gas is provided in the exhaust gas supply path.   The waste heat utilization system according to any one of claims 4 to 6, wherein the dewatering device is configured by the dewatering and crushing device according to any one of claims 1 to 3.   There are a dehydration and pulverization process for dehydrating and pulverizing combustible waste generated in the lumbering process of felled wood, a drying process for drying after the dehydration and pulverizing process, and a heat source for drying the lumber from the felled timber. A method for treating combustible waste, comprising a combustion process that is introduced as fuel for a supplied combustion furnace.

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