Charcoal manufacturing device, charcoal manufacturing method, and charcoal manufacturing system

Abstract

To provide a charcoal manufacturing device which does not emit smoke, toxic gas, or foul odor and reduces the manufacturing cost of charcoal. [Solution] The system comprises a rotary kiln 11 which burns charcoal material 1 to produce charcoal 2, a charcoal material insertion tube 12 which introduces the charcoal material 1 into the rotary kiln 11, an air insertion tube 14 which introduces air into the rotary kiln 11, an external combustion chamber 15 equipped with a chimney 15a which is installed on the side of the rotary kiln 11 where the charcoal material is introduced, a rotary support 13 which rotatably supports the rotary kiln 11, and a rotary drive device which rotates the rotary kiln 11. In addition, the rotary kiln 11 is inclined at a predetermined angle with respect to the horizontal plane from the side where the charcoal material 1 is fed to the side where the charcoal 2 is discharged, and axial partition plates 16a, 16b are attached to the inner surface of the rotary kiln 11 in the central axial direction 11d of the rotary kiln, and an agitator plate 17 is attached in the rotational direction of the rotary kiln 11.

Description

[Technical field]

[0001] The present invention relates to a method for producing charcoal by burning charcoal materials such as rice husks. Smoked charcoal manufacturing method and a charcoal manufacturing system, in particular, by eliminating the process of restricting the air, creating a low-oxygen state in the kiln, and steaming the charcoal material, which was previously required, the present invention improves the efficiency of charcoal manufacturing, reduces the cost of charcoal manufacturing, and enables the production of charcoal of uniform quality, while drastically reducing the generation of soot and toxic gases, making it environmentally friendly. Smoked charcoal manufacturing method It also relates to a charcoal production system. [Background technology]

[0002] Currently, rice husks can be said to be an important resource in Japan, but the reality is that there are problems with disposing of the 2 million tons of rice husks produced each year. Therefore, the heat generated by burning rice husks is utilized to heat agricultural greenhouses, and devices that produce rice husk charcoal by steaming the rice husks are in practical use (Patent Document 1). Rice husk charcoal has useful properties as a material for improving soil drainage, a soil neutralizer, and an insect repellent, and is therefore being used as a soil conditioner necessary for agriculture. Recently, the silica, silicon, copper, manganese, iron, potassium and other mineral components contained in rice husks have been carbonized to make them easier to dissolve, and they are being used effectively in a variety of fields.

[0003] In the production of charcoal, the location of the rice husk storage, the location of the charcoal production equipment, and the location of the charcoal storage facility are important. When they are far apart, labor costs in production activities increase, and therefore cost-effectiveness becomes an important condition. In addition, the specific gravity of rice husks is low at about 0.1, so even if a 10-ton truck is loaded with them, it can only transport about 1 ton. Therefore, from a cost-effectiveness perspective, it is clear that rice husks are not suitable for transportation. Therefore, in the charcoal manufacturing business, it is important to produce charcoal in the area where rice husks are generated.

[0004] Meanwhile, Japan has had a long-standing technique for producing charcoal. This involves first packing the logs into a kiln, then gradually igniting the charcoal while restricting the air flow to carbonize it. Then, unlike normal combustion, the supply of oxygen is kept to a minimum and the kiln is heated to a high temperature to produce the charcoal.

[0005] [Patent Document 1] Patent Application No. 2021-72970 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0006] By the way, there is a common thread between producing charcoal from rice husks and producing charcoal in a kiln in that they both involve a process of restricting the air supply and steaming the material in a low-oxygen environment. This is because if rice husks or logs were completely burned under normal oxygen conditions, ultimately only ash would remain, which would drastically reduce the production efficiency of charcoal or smoked charcoal.

[0007] However, when logs and rice husks are steamed in low-oxygen conditions, large amounts of soot are released, posing a problem of environmental pollution. In particular, when rice husks are steamed, they not only emit soot but also toxic exhaust gases, which cause a foul odor.

[0008] In addition, the conventional charcoal production apparatus described in Patent Document 1 required a screw conveyor to send the charcoal material fed from an inlet to an outlet, and a heating device to burn the charcoal material, resulting in a large number of parts and leading to increased manufacturing costs for the charcoal production apparatus itself. Furthermore, when the charcoal material is burned in a heating device, an additional cost for heating fuel is required, which increases the cost of producing the charcoal.

[0009] In addition, in conventional methods for producing charcoal, if freshly fired charcoal at a high temperature is left in an atmosphere with a normal oxygen concentration, it will either burn out or the amount of charcoal produced will be significantly reduced, so a process was required to cool it by spraying water on it or wait for it to cool in a low-oxygen environment. In the former case, a separate process is required to dry the charcoal that has been wetted with water, and in the latter case, it takes a considerable amount of time to cool the charcoal, and in both cases, there is a problem that the production efficiency of charcoal is low.

[0010] The present invention solves the above-mentioned conventional problems, and in the process of producing charcoal from charcoal material, no soot, toxic gases, or bad odors are emitted, and the production cost of charcoal is reduced. Smoked charcoal manufacturing method The present invention also aims to provide a charcoal production system. [Means for solving the problem]

[0012] Claim 1 The method for producing charcoal described in The present invention is provided with a rotary kiln for burning charcoal by burning charcoal, a charcoal material feeding means for feeding the charcoal material into the rotary kiln, an air feeding means for feeding air into the rotary kiln, an external combustion chamber with an exhaust function installed on the side of the rotary kiln where the charcoal material is fed, one or more rotary supports for rotatably supporting the rotary kiln, and a rotary drive device for rotating the rotary kiln, and the rotary kiln is inclined at a predetermined angle with respect to a horizontal plane from the side where the charcoal material is fed to the side where the charcoal is discharged, and one or more axial partition plates for partitioning the charcoal material in the central axial direction of the rotary kiln and one or more stirring plates for stirring the charcoal material in the rotation direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln. A charcoal producing apparatus, in which a chimney is provided at the top of the external combustion chamber as an exhaust function, the charcoal material supplying means is a charcoal material supplying pipe fixed to the external combustion chamber, the air supplying means is an air supplying pipe with many air holes, the axial partition plate and the stirring plate are attached to the inner peripheral surface of the rotary kiln, and the rotary kiln is movable above a plurality of rollers serving as the rotary support, the charcoal producing apparatus includes a step of putting the charcoal material into the rotary kiln in advance, burning the charcoal material, and forming a high temperature state inside the rotary kiln; Insertion tube A process of mixing the air and the charcoal material using a gas turbine and feeding the mixture into the heated rotary kiln; a process of diffusing the air and the charcoal material in a dispersed state in the internal combustion chamber of the rotary kiln, which is in a high temperature state, to cause combustion, and a process of burning the mixture including the charcoal material from the previous combustion; 、 Accumulating the charcoal material burned in the rotary kiln at the bottom of the rotary kiln; 、At the same time, the rotary kiln is rotated, and the burning charcoal material rises to the top due to the action of the stirring plate attached inside the rotary kiln and the circular action inside the rotary kiln, and falls to the bottom from a certain position. The burning charcoal material moves up and down to end the combustion. The charcoal material moves up and down, and at the same time, the supply of oxygen is cut off, and other charcoal materials fall from above the burning charcoal material, cutting off the oxygen. These actions are performed continuously to produce charcoal. At the same time, the temperature of the charcoal just produced is lowered by utilizing the air flow generated by the chimney. 、 and a step of discharging the low-temperature charcoal.

[0013] Claim 2 The charcoal production system described in the is a charcoal material moving device that moves the charcoal material from the charcoal material storage area, and an automatic charcoal material feeder that inserts the charcoal material moved from the charcoal material moving device and mixes the inserted charcoal material with air using an air blower and sends it into the charcoal production device; The present invention is provided with a rotary kiln for burning the charcoal by burning the charcoal, a charcoal material feeding means for feeding the charcoal material into the rotary kiln, an air feeding means for feeding air into the rotary kiln, an external combustion chamber with an exhaust function installed on the side of the rotary kiln where the charcoal material is fed, one or more rotary supports for rotatably supporting the rotary kiln, and a rotary drive device for rotating the rotary kiln, and the rotary kiln is inclined at a predetermined angle with respect to a horizontal plane from the side where the charcoal material is fed to the side where the charcoal is discharged, and one or more axial partition plates for partitioning the charcoal material in the central axial direction of the rotary kiln and one or more stirring plates for stirring the charcoal material in the rotation direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln. The apparatus includes a charcoal manufacturing apparatus, an air diffusion pipe for widely sending air into the rotary kiln using an air blower, a charcoal storage container arranged on the charcoal discharge side of the charcoal manufacturing apparatus, a charcoal suction device for sucking in the charcoal in the charcoal storage container, a charcoal transfer pipe for transferring the charcoal from the charcoal suction device, a cyclone separator for transferring the air and the charcoal in a mixed state from the charcoal transfer pipe and separating the mixed charcoal from the air, and a charcoal intake container for taking in the charcoal in the cyclone separator. In the process of storing the charcoal in the charcoal intake container from the charcoal storage container, the temperature of the charcoal is lowered by utilizing the action of low-temperature air while moving through the charcoal transfer pipe. Effect of the Invention

[0017] The method for producing charcoal of the present invention is as follows: 1 Since the device is configured as described above, it has the following excellent effects. (1) First, the process includes a step of burning the charcoal material in the rotary kiln to heat the inside of the rotary kiln. The charcoal material is burned one after another to become a heat source, and no separate heating device is required. This reduces the manufacturing cost of the device itself, and also reduces manufacturing costs because there is no need for separate fuel costs for heating. (2) Next, the process includes a process of feeding the material into a rotary kiln and a process of burning the charcoal material fed into the rotary kiln to produce charcoal. As a result, the upper layer of the charcoal material burns at high temperature and without smoke, while the lower layer is steamed, thereby significantly reducing the generation of soot and toxic gases. (3) In addition, the rotary kiln is rotated to mix and stir the charged charcoal material with the burned charcoal material, so that the upper layer of smokeless combustion and the lower layer of steam-roasted material alternate. By repeating this process many times, charcoal with a uniform roasting state can be produced. (4) Furthermore, since the rotary kiln is provided with a process for cooling the burnt charcoal on the charcoal discharge side, there is no need for a process for cooling the produced charcoal with water or a process for waiting for the temperature to drop in a steamed state, improving the efficiency of charcoal production.

[0018] The charcoal production system of the present invention is 2 Since the device is configured as described above, it has the following excellent effects. (1) First, in conventional systems, there was generally a problem that the charcoal was broken down into powder by the motor blades. However, in the charcoal production system of the present invention, the produced charcoal is stored in the charcoal intake container in its original form, so there is no risk of the charcoal being broken down into powder. (2) In addition, in conventional systems, the temperature of the charcoal could rise when it was piled up in a charcoal storage container such as a charcoal tank. However, in the system of the present invention, in the process of storing the charcoal from the charcoal storage container in the charcoal intake container, the temperature of the charcoal is automatically lowered by cooling with low-temperature air inside the charcoal transfer pipe, so there is no need for a separate process of lowering the temperature of the charcoal, which was previously required. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a diagram for explaining the basic configuration and basic operation of one embodiment of a method for producing smoked charcoal of the present invention, in which FIG. 1(a) is a partially cutaway side view, and FIG. 1(b) is a longitudinal sectional view taken along the line AA. [Diagram 2] 1 is a schematic side view showing the configuration of a charcoal production system of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention Smoked charcoal manufacturing method In one embodiment of the present invention: The present invention will be described below. Smoked charcoal manufacturing method The basic configuration and basic operation of this embodiment will be described with reference to FIGS. FIG. 1 is a diagram for explaining the basic configuration and basic operation of an embodiment of a charcoal producing apparatus and a charcoal producing method, in which FIG. 1(a) is a partially cutaway side view, and FIG. 1(b) is a longitudinal sectional view taken along the line AA. In the following, the case where rice husk is used as the charcoal material will be specifically described.

[0021] The main components of the charcoal manufacturing apparatus 10 of this embodiment, as shown in Figure 1(a), are a rotary kiln 11 that burns rice husks 1 to produce rice husk charcoal (hereinafter sometimes simply referred to as "smoked charcoal") 2, a rice husk insertion tube 12 as a feeding means for feeding the rice husks 1 into the rotary kiln 11, one or more (only one is shown) rotary supports 13 that rotatably support the rotary kiln 11, and a rotary drive device (not shown) that rotates the rotary kiln 11. The rotary support 13 is composed of a rotary kiln moving roller (hereinafter sometimes simply referred to as a "roller") 13a, a stand 13b, and a roller mounting bracket 13c. Conventionally, the rotary kiln 11 has generally been used as a kiln for firing cement, insulators, ceramics, etc. Used in the embodiment The charcoal manufacturing apparatus 10 is characterized in that the rotary kiln 11 is used for burning the rice husk charcoal 2.

[0022] In addition, in the charcoal manufacturing apparatus 10 of this embodiment, an air injection tube 14 with many air holes 14a is provided as an air injection means for injecting air into the rotary kiln 11, and an external combustion chamber 15 equipped with a chimney 15a for exhaust function is attached to the side of the rotary kiln 11 where the rice husks 1 are fed.

[0023] Next, the details of each component will be described with reference to FIGS. First, as shown in FIG. 1(a), a rotary kiln 11 is inclined at a predetermined angle with respect to a horizontal plane from the side where rice husks 1 are charged to the side where rice husk charcoal 2 is discharged. As shown in Figures 1(a) and (b), the inner peripheral surface of the rotary kiln 11 is configured to be fitted with one or more (2 is shown) hollow circular axial partition plates 16a, 16b that separate the rice husks 1 in the direction of the central axis 11d of the rotary kiln 11, and one or more (8 is shown) straight-shaped stirring plates 17 that stir the rice husks 1 and rice husk charcoal 2 in the rotational direction of the rotary kiln 11. By attaching the axial partition plates 16a and 16b, the inside of the rotary kiln 11 on the rice husk 1 input side is divided into a first internal combustion chamber 11C and a second internal combustion chamber 11D.

[0024] Next, as described above, the external combustion chamber 15 is equipped with the chimney 15a, and has a structure in which the casing 15b is fixed to the rice husk 1 input side of the rotary kiln 11 using a fixing plate 15c. An air injection tube 14 having many air holes 14 a is fixed to the external combustion chamber 15 . Furthermore, an air hole 18 is formed between the rotary kiln 11 and the external combustion chamber 15 to improve ventilation.

[0025] With the above configuration, the basic operation of the charcoal producing apparatus 10 of this embodiment and the charcoal producing method will be described with reference to Figs. In the charcoal manufacturing apparatus 10 of this embodiment, first, the rice husks 1 inside the rotary kiln 11 are ignited and burned using kerosene or the like, thereby raising the inside of the rotary kiln 11 to a high temperature state.

[0026] Next, the rice husks 1 are mixed with air using a rice husk insertion tube 12 for inserting the rice husks, and then discharged from the first discharge hole 12a and the second discharge hole 12b of the rice husk insertion tube 12 by an air blower not shown into the first internal combustion chamber 11C and the second internal combustion chamber 11D inside the heated rotary kiln 11.

[0027] Next, the rice husks 1 placed in the rotary kiln 11 are burned to produce charcoal 2. At this time, the rice husks 1 are sequentially discharged from the first discharge hole 12a and the second discharge hole 12b of the rice husk insertion tube 12 into the first internal combustion chamber 11C and the second internal combustion chamber 11D in the rotary kiln 11, and are accumulated on top of the already accumulated rice husk charcoal 2. Due to the air blocking effect of the rice husks 1 in the upper layer, the rice husks 1 in the lower layer are heated in a low-oxygen state and are steamed. As the rice husks 1 are inserted one after another, a mixture 3 of rice husks and charcoal rice husks is piled up in each of the internal combustion chambers 11C and 11D. On the other hand, the rice husks 1 in the upper layer are constantly fed with air from the air injection pipe 14 having many air holes 14a, so they are burned at a high temperature and the soot from the lower layer is also burned, achieving smokeless combustion. Therefore, unlike conventional charcoal manufacturing devices, the generation of soot and toxic gases can be significantly reduced.

[0028] Incidentally, the upper layer of rice husks 1 accumulated in each internal combustion chamber 11C, 11D in the rotary kiln 11 is burned at high temperatures in an oxygen-rich environment, while the lower layer is steamed and baked. If this condition continues, the upper and lower layers may be burned in different conditions, resulting in burnt spots. In contrast, in the charcoal manufacturing apparatus 10 of this embodiment, the rotary kiln 11 is rotated by the rotating support 13 and a rotary drive device not shown, so that the rice husks 1 are lifted along the inner surface of the rotary kiln 11, and the upper and lower layers of the mixture 3 of rice husks and rice husk charcoal are switched, and the rice husk charcoal 2 in the lower layer, which was not sufficiently burned, now moves to the upper layer, which has a sufficient oxygen concentration, and the unburned parts are eliminated by high-temperature, smokeless combustion. In particular, in this embodiment, by installing the stirring plate 17, the mixture 3 of rice husks and rice husk charcoal rises sufficiently to the top of the rotary kiln 11 and falls to the bottom from a certain height. These fallen rice husk charcoal 2 and the new rice husks 1 that are added successively again block oxygen, creating a steam-roasted state for the rice husks 1 in the lower layer. These up and down movements are performed continuously, and the mixture 3 of rice husks and rice husk charcoal is thoroughly mixed, so that the quality of the rice husk charcoal 2 becomes more uniform.

[0029] In this way, with the charcoal production apparatus 10 and charcoal production method of this embodiment, smokeless combustion can be achieved at high temperatures with sufficient oxygen concentration in the upper layer of the rice husks 1, so the heating device that was previously required is no longer necessary, which not only reduces the manufacturing costs of the device itself but also eliminates the need for fuel costs for heating, thereby reducing the manufacturing costs of the rice husk charcoal 2. In addition, by installing axial partition plates 16a, 16b that separate the rice husks 1 in the direction of the central axis 11d inside the rotary kiln 11, the layer in which the rice husks 1 are accumulated becomes thicker, increasing the lower layer of the rice husks 1 that can be steamed.In addition, since it becomes easier to control the burning time, the quality of the rice husk charcoal 2 is also improved. Furthermore, the rotary kiln 11 is inclined at a predetermined angle with respect to the horizontal plane from the side where the rice husks 1 are fed to the side where the charcoal 2 is discharged, and the charcoal 2 automatically moves to the discharge side of the rotary kiln 11, so there is no need to add a separate function for transporting the charcoal 2, and the manufacturing costs of the charcoal production apparatus 10 itself can be reduced.

[0030] In addition, since the rice husks 1 are sequentially discharged from the first discharge hole 12a and the second discharge hole 12b of the rice husk insertion tube 12 and are dumped onto the already accumulated rice husk charcoal 2, the newly dumped rice husks 1 have an air blocking effect and also have the effect of cooling the burned rice husk charcoal 2. In the smoked charcoal manufacturing apparatus 10 of the present embodiment, the smoked charcoal 2 moves to the smoked charcoal discharge side of the rotary kiln 11 while being cooled in this way, but in the process of cooling the burned smoked charcoal 2 at the discharge side of the rotary kiln 11, the external combustion chamber 15 equipped with a chimney 15a as an exhaust function is attached to the side of the rotary kiln 11 where the rice husk 1 is introduced, so that an updraft is generated by the chimney 15a provided in the external combustion chamber 15, the inside of the rotary kiln 11 becomes a decompressed state, and as shown in FIG. 1(a), an air flow (arrows E, F, G) is generated from the discharge side of the smoked charcoal 1 of the rotary kiln 11 to the external combustion chamber 15, and air is drawn in from the outside, and this cold air is used to cool the burned smoked charcoal 2. Therefore, unlike the conventional device, the process of separately cooling the finished smoked charcoal 2 can be omitted, and the production efficiency can be greatly improved.

[0031] One embodiment of the charcoal production system of the present invention: Hereinafter, the basic configuration and basic operation of one embodiment of the charcoal producing system 20 of the present invention will be described with reference to FIG. FIG. 2 is a schematic side view showing the configuration of a charcoal producing system 20 of the present invention. First, the basic configuration of the charcoal production system 20 of this embodiment is a spring-type moving device (commonly known as a spring cone) 22 that moves the rice husks 1 from the rice husk storage area 21, a rice husk automatic feeder 23 that automatically supplies the rice husks 1 moved from the spring-type moving device 22 to the charcoal production device 10, the charcoal production device 10 that burns the rice husks 1 to produce the rice husk charcoal 2 as described above, and a charcoal production device 10 that is disposed on the discharge side 11a of the charcoal 2 of the charcoal production device 10. the rice husk charcoal tank 25 as a charcoal storage container, a suction device 26 for sucking in the charcoal 2 from the rice husk charcoal tank 25, a charcoal transfer pipe 27 as a charcoal transfer device for transferring the rice husk charcoal 2 from the suction device 26, a cyclone separator 28 for separating the rice husk charcoal 2 from the charcoal transfer pipe 27 and the air, and a FIBC 29 as a charcoal intake container for taking in the rice husk charcoal 2 in the cyclone separator 28.

[0032] Next, the basic operation of the charcoal production system 20 of this embodiment is as follows: first, the rice husks 1 in the rice husk storage area 21 are inserted into the automatic rice husk feeder 23 by the spring contact 22, and then the rice husks 1 inserted into the automatic rice husk feeder 23 are sent, mixed with air, through the rice husk moving pipe 24 by the air blower 23a of the automatic rice husk feeder 23 into the external combustion chamber 15 of the charcoal production apparatus 10. At the same time, air is sent widely into the rotary kiln 11 using an air blower 19 and an air diffusion pipe (air injection pipe) 14, and the briquettes 2 are produced by the charcoal production apparatus 10 as described above.

[0033] Next, the produced rice husk charcoal 2 is pushed out from the discharge outlet 11a of the rotary kiln 11 and stored in the rice husk charcoal tank 25. In addition, the charcoal 2 in the rice husk charcoal tank 25 is sucked in by a rice husk charcoal suction device 26 and sent via a charcoal transfer pipe 27 to a relatively large cyclone separator 28 in a mixed state of air and the rice husk charcoal 2. In the cyclone separator 28, air is discharged from an air outlet at the top due to the cyclone effect, and the rice husk charcoal 2 is taken into the FIBC 29 from a charcoal intake port at the bottom. In this way, the charcoal production system 20 of the present invention has a feature in which the produced rice husk charcoal 2 is stored in the flexible container 29 in its original form.

[0034] In conventional systems, there was generally a problem that the rice husk charcoal was broken down into powder by the motor blades, but in the charcoal production system 20 of the present invention, the produced rice husk charcoal 2 is stored in its original form in the FIBC 29, so there is no risk of the rice husk charcoal 2 being broken down into powder. In addition, in conventional systems, the temperature of the charcoal could rise when it was piled up in a container such as a FIBC, but in the system 20 of the present invention, the temperature of the rice husk charcoal 2 discharged from the rotary kiln 11 is around 35°C, and further, in the process of storing the rice husk charcoal 2 from the rice husk charcoal tank 25 into a FIBC 29, the effect of lowering the temperature of the rice husk charcoal 2 by cooling it with low-temperature air inside the charcoal transfer pipe 27 is utilized, so there is no need for a separate process of lowering the temperature of the charcoal 2, which was previously necessary, and the production efficiency of the rice husk charcoal 2 is improved.

[0035] The present invention Smoked charcoal manufacturing method The charcoal producing system is not limited to the above embodiment. In the above embodiment, an example was described in which rice husks were used as the charcoal material, but the scope of the present invention also includes cases in which this is applied to granular charcoal materials such as buckwheat husks or finely chopped wood chips, which are fed into a rotary kiln to form an accumulated layer and the lower layer is steamed. Regarding the homogeneity of the charcoal, it is desirable that the charcoal be granular and of uniform size, and when the charcoal is produced by forming the charcoal material into such a shape, it is within the scope of the present invention. Also, although an example in which a chimney is attached as an exhaust function to be attached to the external combustion chamber has been described, another exhaust function such as a fan may be used instead. Although an example has been described in which a FIBC is used as the charcoal intake container, it is within the scope of the present invention even if this is replaced with another intake container. The inclination angle and length of the rotary kiln can be appropriately changed in design depending on the amount of charcoal produced and the temperature at the time of discharge. [Industrial Applicability]

[0036] The present invention relates to a method for producing rice husk charcoal by steaming, or by using a heating device that does not burn vigorously. 、This is a groundbreaking invention that overturns the conventional wisdom that rice husk charcoal cannot be produced without heating. Moreover, since cooled charcoal can be produced continuously from rice husks in a series of processes, it has the advantage of being able to charcoalize rice husks at low cost, and has great potential for industrial use. [Explanation of symbols]

[0037] 1: Rice husk (charcoal material) 2: Rice husk charcoal (charcoal) 10: Smoldering charcoal manufacturing equipment 11: Rotary kiln 12: Rice husk insertion tube (means for inserting charcoal material) 13: Rotating roller (rotating support) 14: Air injection tube (air injection means, air diffusion pipe) 15: External combustion chamber 15a: Chimney (exhaust function) 16a, 16b: Axial partition plate 17: Stirring plate 20: Charcoal production system 21: Rice husk storage area 22: Spring control (charcoal material moving device) 23: Automatic rice husk feeder (automatic charcoal feeder) 25: Rice husk charcoal tank (charcoal storage container) 26: Rice husk charcoal suction device 27: Rice husk charcoal transfer pipe 28: Cyclone separator 29: FIBC (charcoal container)

Claims

1. A charcoal manufacturing device comprising: a rotary kiln for burning charcoal material to produce charcoal; a charcoal material feeding means for feeding the charcoal material into the rotary kiln; an air feeding means for feeding air into the rotary kiln; an external combustion chamber with an exhaust function installed on the side of the rotary kiln where the charcoal material is fed; one or more rotary supports for rotatably supporting the rotary kiln; and a rotary drive device for rotating the rotary kiln, wherein the rotary kiln is inclined at a predetermined angle with respect to the horizontal plane from the side where the charcoal material is fed to the side where the charcoal is discharged, and one or more axial partition plates for separating the charcoal material in the central axial direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln, and one or more stirring plates for stirring the charcoal material in the rotational direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln, A chimney is provided at the top of the external combustion chamber as an exhaust function, The charcoal material supplying means is a charcoal material insertion tube fixed to the external combustion chamber; the air injection means is an air injection tube having many air holes; The axial partition plate and the stirring plate having a hollow disk shape are attached to the inner peripheral surface of the rotary kiln, In the charcoal manufacturing apparatus, the rotary kiln is installed on the upper part of the plurality of rollers which are the rotary support, A step of putting the charcoal material into the rotary kiln in advance, burning the charcoal material, and creating a high temperature state in the rotary kiln; In the internal combustion chamber of the rotary kiln, the air and the charcoal material are mixed using the charcoal material insertion tube, and the charcoal material is introduced into the rotary kiln at a high temperature; A step of causing combustion by dispersing the air and the charcoal material in a dispersed state in the internal combustion chamber of the rotary kiln at a high temperature, and further burning the charcoal material in a mixed state including the charcoal material from the previous combustion; Accumulating the charcoal material burned in the rotary kiln at the bottom of the rotary kiln; At the same time, the rotary kiln is rotated, and the burning charcoal material rises to the top due to the action of the stirring plate installed inside the rotary kiln and the circular action inside the rotary kiln, and then falls to the bottom at a certain position; Furthermore, the burning of the charcoal material is terminated while the burning material is moving up and down. The charcoal material moves up and down while simultaneously cutting off the supply of oxygen, and other charcoal materials fall from the burning charcoal material, cutting off the oxygen, and these actions are performed continuously to produce charcoal; At the same time, using the air flow generated by the chimney to lower the temperature of the freshly produced charcoal; Discharging the cold charcoal; A method for producing charcoal, comprising:

2. A smoky material moving device for moving the smoky material from the smoky material storage area; The charcoal material moving device is inserted into the charcoal material automatic feeder, which uses an air blower to mix the charcoal material with air and feeds it into the charcoal production device; A charcoal producing device comprising: a rotary kiln for burning the charcoal material to produce charcoal; a means for introducing the charcoal material into the rotary kiln; an air introducing means for introducing air into the rotary kiln; an external combustion chamber with an exhaust function, which is installed on the side of the rotary kiln where the charcoal material is introduced; one or more rotary supports for rotatably supporting the rotary kiln; and a rotary drive device for rotating the rotary kiln. The rotary kiln is inclined at a predetermined angle with respect to a horizontal plane from the side where the charcoal material is introduced to the side where the charcoal is discharged, and one or more axial partition plates for partitioning the charcoal material in the central axial direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln, and one or more stirring plates for stirring the charcoal material in the rotation direction of the rotary kiln are attached to the inner peripheral surface of the rotary kiln. An air diffusion pipe that uses an air blower to widely distribute air inside the rotary kiln; A charcoal storage container disposed on the charcoal discharge side of the charcoal production apparatus; A charcoal suction device that sucks the charcoal in the charcoal storage container; A charcoal transfer pipe for transferring the charcoal from the charcoal suction device; A cyclone separator for separating the air and the charcoal from the charcoal transfer pipe in a mixed state, and the charcoal in the mixed state from the air; A charcoal intake container that takes in the charcoal in the cyclone separator; A charcoal production system characterized in that, in the process of storing the charcoal from the charcoal storage container into the charcoal intake container, the temperature of the charcoal is lowered by utilizing the action of low-temperature air while the charcoal is moving through the charcoal moving pipe.

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