JP2903045B2 - Rotary carbonization furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the burning of wood-based carbide raw materials such as sawdust (hereinafter referred to as wood-based carbide raw materials) in a rotary carbonization furnace (incineration combustion furnace) in a body without using a combustion burner. By making a grate and using the heat of combustion to form a combustion carbonization process in the fuselage, by sustaining and holding this, the raw material is continuously carbonized, and carbon, especially amorphous carbon The present invention relates to a carbonization furnace having a novel structure capable of producing a carbonization furnace.

[0002]

2. Description of the Related Art There are extremely many types of wood-based industrial waste. Specifically, there are, for example, sawdust, wood chips, coffees, tofu cake and the like. These industrial wastes are treated as follows. a) It is used as fuel for private use and incinerated if the amount is small. b) It is entrusted to a specialized waste disposal company for a fee (finally using an incinerator). c) Although it is small, it is used as a livestock raising material. d) Wood chips are commercially available as firewood. That is, most of the wood-based industrial waste is incinerated and discarded. As furnaces for combustion, co-current and counter-current rotary kiln type combustion furnaces, rotary kilns having a secondary combustion chamber, etc., all of which are incinerated at a high temperature equipped with a combustion burner are used.

[0003]

The above-mentioned treatment of the known woody industrial waste simply involves burning and discarding. Therefore, utilization of this industrial waste is strongly demanded practically.
The present inventor has conducted research for the purpose of meeting this demand. The present inventor has found that waste materials (for example, sawdust, pre-cut waste, chip materials, small pieces of wood, etc.) during processing of civil engineering wood, coffee bean refuse cake, cacao bean husk, tofu cake, and grain refuse in the food industry. Wood-based waste materials, etc., using wood waste as a heat source, utilizing the heat generated by self-combustion, continuously distilling the above-mentioned waste materials at a low temperature of 700 ° C or less, carbonizing it, and pulverizing it. As a result, they found that an amorphous carbon powder as a raw material of activated carbon could be produced, and invented a rotary carbonization furnace suitable for producing the amorphous carbon powder.

[0004]

That is, the present invention provides a body,
A plurality of annularly arranged combustion air introduction pipes, each of which comprises a diameter narrowing portion and a narrowing portion, and which is provided in the body portion in parallel with the inner wall surface of the body portion and has an injection hole directed inwardly of the body portion; ,
And, inside the combustion air introduction tube group, a plurality of blade groups are provided in a ring shape in which a plurality of blades slightly inclined with respect to the body axis are continuously provided in series at intervals. Following the body part, the diameter is continuously reduced from the part connected to the body part, and a diameter reduction part having a blade group that is slightly inclined with respect to the axis inside is further reduced in diameter following the diameter reduction part. From the end of the shrinking part,
Narrowed portions having the same diameter as the end portion of the reduced diameter portion and internally having a blade group slightly inclined with respect to the axis are provided, and at the end of the body portion, a raw material charging device for carbonizing, and a combustion air inlet. The device
The present invention relates to a rotary carbonization furnace provided with a carbide discharge portion at an end of a narrowing portion.

[0005] The rotary carbonization furnace of the present invention is provided with a furnace bottom hood having a device for discharging chimneys and carbides, following the discharge portion of the narrowed portion.
Connected to the combustion air source, a fixed supply ring having a circulation groove therein capable of distributing combustion air into a plurality, a loosely rotatably fitted with the fixed supply ring, and a circulation groove of the fixed supply ring, A rotary feed ring having a means for connecting a combustion air introduction pipe of a body portion; and a rotary carbonization furnace of the present invention further comprises a carbonization furnace rotational speed remote manual control, a combustion air flow remote manual control. It has a manual control system for the carbonization process in the carbonization furnace, which is composed of a vessel, a wood-based carbide production material input amount remote manual controller, a furnace bottom temperature indicator and a furnace combustion monitoring window.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings. As shown in the cross-sectional view of the carbonizing furnace of FIG. 9, the outer shell (60) of the rotary wood-based carbonizing furnace main body of the present invention is formed of a thick steel plate, and the inner wall thereof is castable (64).
Insulated by The body (61) (horizontal large cylinder type), the diameter reduction part (62) (horizontal truncated cone type) and the narrowing part (6
3) (horizontal small cylinder type)
One end of 1) is closed by a lid flange (22), and the other end is open at a narrowed portion (63), which serves as an outlet for carbide formed in the furnace. Body part (61), diameter narrowing part (6
2) The dimensional ratio of the narrowed portion (63) is such that the outer diameter of the body portion (61) is D meters, the body length is L meters, and the narrowed portion (6
The solid angle of the outer peripheral surface of 2) is θ degrees, and the outer diameter of the narrowed portion (63) is d.
3d ≦ D ≦ L / 3, θ = 10-15
It is necessary to have a close relationship.

On the inner peripheral wall of the body part (61), there are provided a plurality of combustion air introduction pipes (10) corresponding to the capacity thereof. It is fixed to. Also, a plurality of, for example, six, material moving blades (65) are equally divided on the circumference of the inner peripheral wall, and the combustion air introduction pipe (1) is provided.
0), and is fixed at an inclination angle of 3 to 5 degrees. The raw material moving blades have a configuration in which a plurality of blade groups in which a plurality of blades are continuously provided in series at intervals are provided in a ring shape. In the figure, four blades are provided in series. The raw material moving blades are provided in the narrowing portion. The body part (61) constitutes a drying zone (66) and a combustion heating zone (67). In order to make a difference in the moving speed of the carbonized material, the raw material moving blades (65) are spaced at a predetermined distance. I have. The carbonization furnace (16) is installed so that the axis is horizontal and there is no inclination of the axis.

[0008] The moving speed of the carbonized material is generated by the above-mentioned raw material moving blade (65), and the average speed is varied depending on the belt. Burning carbides,
The heat source for carbonization is based on the calorific value of the fuel to be carbonized.For example, there is no use of a heat source from the outside except for igniting the carbonized material using a portable burner at the time of starting and burning the carbonized material in the furnace. . In other words, the carbonization furnace (1
No combustion burner is installed in 6).
The material to be carbonized in the body (61) in the carbonization process is shown in FIG.
The grate (95) is formed as shown in the schematic diagram of the raw material carbonization process. FIGS. 11, 12, and 13 show X- in FIG.
The avalanche state of the to-be-carbonized material in the dry-distillation zone, the combustion heating grate, and the carbonization zone in the X, YY, ZZ direction furnaces is shown.
That is, it is shown that the carbonized material is seated at the angle of repose according to the physical properties by the rotation of the furnace. Drying, burning, and carbonizing are carried out in this state, but the mixing reaction and agitation of the surface only by the avalanche movement at the seat position has a small contact reaction area with the combustion air, so the combustion reaction time increases. . Since the furnace speed is inversely proportional to the combustion reaction time,
Unless the rotation speed is reduced, it is difficult to maintain and maintain the carbonization process in the furnace. Therefore, the operation is performed at a reduced rotation speed. Therefore, the operation moves in a direction in which the efficiency of carbonization decreases.

The reduction of the reaction time is necessary for maintaining and maintaining the carbonization process, and is also important for improving the carbonization efficiency. In order to reduce the reaction time, a combustion air supply pipe (17) is used to extend the combustion air introduction pipe from the lower part of the seating position of the material to be carbonized, that is, the entire inner peripheral wall of the body (61) as shown in FIGS. If (combustion) air is injected according to (10), the combustion air will flow to the inside of the carbonized material at the seating position, and combustion will occur from the inside of the seating position. This indicates that the temperature has become extremely large, and the combustion reaction time can be greatly reduced. When it is determined from the observation window (35) that the combustion state is poor (this phenomenon often occurs when the moisture content of the carbonized material is 40 or more), the oxygen concentration of the combustion air is reduced. In order to increase the oxygen concentration, oxygen can be mixed into the air suction side of the combustion air supply device from the oxygen cylinder (89) to increase the oxygen concentration of the combustion air to back up the combustion reaction.

FIG. 6B is a sectional view of the fixed supply ring.
That is, a fixed supply ring (2) formed by processing a combustion air circulation groove (3) on the entire inner surface side and being connected to the groove by one combustion air inlet pipe (1) is a combustion air supply device. As shown in FIG. 4, the rotating distribution ring (4) is fitted and joined by fitting to form a body. On the other hand, as shown in FIG. 5 relating to the apparatus for supplying air for combustion, a group of air introducing pipes for combustion at a place where an air injection pipe (11) arranged on the inner wall side of the rotary carbonization furnace body (16) is attached. 10) and a rotary distribution ring (4) via an intermediate connecting pipe (8) and the like to form a combustion air supply device which is coaxially connected to a rotary shaft of the furnace. In the furnace bottom hood (27), products, specifically, charcoal are separated, fall in the direction of gravity, and enter the screw-type charcoal crusher (38). The screw-type charcoal crusher (38) shown in FIGS. 2 and 3 is a crusher drive motor that rotationally drives a crushing screw (43), a cylinder body (82) which is a sheath of the screw, and a crushing screw (43). 44)
It is more established.

The principle of the pulverization is the shape of the flight of the pulverizing screw (43), and the flight corresponding to the position on the inlet side of the pulverizer is a saw-toothed flight, which roughly pulverizes the charcoal ingot. This is the part to do. In addition, controlled cooling water is injected into this portion to enhance the pulverizing effect. The middle part of the screw is a general flight and is dedicated to extrusion. The outlet is a thick flight type, with a groove around it to allow fine grinding. On the other hand, as shown in FIG. 3, the diameter of the cylinder outlet is reduced to increase the grinding efficiency, thereby giving resistance to the moving powder, filling the cylinder with the powder, and increasing the space density. This crusher is directly connected to the outlet of the furnace bottom hood. In other words, since all of the amorphous carbon produced in the carbonization furnace is passed on because it is installed on the production line, all the amorphous carbon produced is in the form of finely pulverized amorphous carbon, The particle size distribution is a powder having a mode of 100 mesh as shown in FIG. 15, and can be used directly as a raw material of activated carbon.

Next, the present invention will be described in detail with reference to FIG. 1) The equipment for feeding wood-based waste such as sawdust into the carbonization reaction equipment is composed of a raw material cart rich (12) and a belt type conveyor (13) having a motor with a variable speed by an inverter. 2) The carbonization reaction facility is a facility for carbonizing a wood-based carbide production raw material, which is a raw material popper (14) having a screw input machine (15) equipped with a variable speed motor, a rotary kiln type carbonization furnace body (16), Combustion air supply device (17) for feeding combustion air to the carbonization furnace body (16), and carbonization furnace drive device (18) with a remotely controllable variable speed motor for rotating the carbonization furnace body (16) It is composed of The combustion air supply device (17) consists of an air preheating pipe (34), a combustion air blower (19), a combustion air flow meter (20), a remotely controllable combustion air flow control valve (21), etc. Have been. The combustion air supply device main body (17) is fitted and seated on a cylindrical device support bracket (23) fixed by welding to a lid flange (22) closing the carbonization furnace main body (16). The combustion air outlet pipe (6) of the combustion air supply device main body (17) has a combustion air introduction pipe (10) attached at equal intervals on the outer (or inner) peripheral side of the carbonization furnace body (16). They are connected by screwing. Combustion air supply unit main body (17) by being fixed while adjusting the axis when connecting
Is coaxial with the axis of the carbonization furnace main body (16). Due to the concentric arrangement, combustion air can be supplied to the combustion air supply device main body (17) from an external fixed pipe even when the carbonization furnace body (16) is in a rotating state.

The combustion air is sucked from the air inlet (30) by the operation of the combustion air blower (19), passes through the combustion air flow meter (F1-1) (20), and the combustion air flow control valve (20). CV) (21) is controlled to a predetermined flow rate, and flows into the air preheating pipe (34). The combustion air heated by the waste gas in the furnace hood (27) while passing through the air preheating pipe (34) flows into the combustion air inlet pipe (1) of the combustion air supply device (17). Go on. The combustion air flow control valve (21) can be remotely controlled by a valve operation transducer (31). The air that has flowed into the combustion air inlet pipe (1) is introduced into the carbonization furnace by the combustion air supply device (17), and the combustion air is injected all at once from the inner circumferential surface of the furnace. The combustion reaction can be promoted.

3) Next, the carbonization furnace main body (16) will be described. The driving force for rotationally driving the carbonization furnace body (16) is the carbonization furnace reduction drive motor (18), which drives the carbonization furnace rotation sprocket gear (24) with a sprocket chain through the sprocket gear attached to its shaft. Rotate, thus rotating the carbonization furnace body (16). The carbonization furnace deceleration drive motor (18) can be remotely controlled by the carbonization furnace drive motor converter (32). The carbonization furnace main body (16) has two tires (25), which are received by two pairs of tire rollers (26) to smoothly rotate the carbonization furnace main body (16). One end of the carbonization furnace main body (16) is closed by a lid flange (22), and a cylindrical device support bracket (23) is attached to the outside of the lid flange (22) by welding as described above, and the support bracket (23) is provided. A hole into which the cylinder of the material feed screw (15) can be inserted is opened in the lid flange (22) inside the part (23). The tip of the material feed screw (15) fits into this hole, and the furnace The raw material can be put in. Raw material input screw (15)
Is driven by a material input reduction gear motor (33), the speed of which can be determined by a variable handle. On the other hand, the other end of the carbonization furnace is inserted into the furnace bottom hood (27).

The lid flange (22) has a hole for igniting the wood-based carbide production material in the furnace at the time of startup, and has an ignition plug (28) for closing the hole. There is also a hole in the furnace for the injection of small wood pieces as fuel, and there is a wood piece insertion plug (29) that closes this hole.
2) Since it is provided on the surface, the more convenient hole can be used depending on the furnace position. The ignition plug (28) is removed, and the woody hydrocarbon material in the furnace is ignited using, for example, a commercially available portable burner to start combustion.

4) The furnace bottom hood will be described. The present invention relates to a facility for separating a carbide (solid matter) of a wood-based carbide raw material produced by a carbonization reaction in a carbonization furnace and a waste gas (including a dry distillation gas) generated by combustion, and guiding the separation to a device for treating each. Then, it is called furnace bottom hood (27). The furnace butt (27) has an outer shell made of steel plate and the inner wall is castable finished as a heat-insulating refractory material, a combustion air preheating tube (34), a furnace window (35), and a furnace butt temperature indicator. It is composed of a thermocouple well (36) of T1 and the like. Furnace butt hood (2
In 7), waste gas (including dry distillation gas) etc. is guided to the chimney (37), and solid matter (carbide) separates by the action of gravity and falls downward, gathering in the screw-type charcoal crusher (38). .

The in-furnace viewing window (35) allows observation of the combustion state in the carbonization furnace (16) and avalanche movement of wood material such as sawdust due to rotation of the furnace, and allows visual confirmation of the state of combustion, dry distillation, and carbonization. . Therefore, it plays an important role in the operation of the carbonization furnace (16). The ambient temperature inside the furnace hood (27) is a thermocouple (36)
Is transmitted by the temperature converter (39) and is indicated to the temperature indicator T1 (40).

5) The carbide separated by the furnace hood (27) falls directly into the screw type wet pulverizer (38). The screw-type wet pulverizer (38) is a main body of the pulverization equipment, and water required for the wet type is supplied by a pulverizing water flow meter FI-2.
The amount of water is measured by (41), and the amount of water is controlled to a predetermined amount by a pulverizing water amount control valve (42). The crushing screw (43) in the crusher (38) is divided into a crushing section (75), an extruding section (76) and a crushing section (77) as shown in FIG. ing. All materials are made of stainless steel. The pulverizing screw (43) is rotated by a pulverizer driving motor (44) and the rotation is variable, so that the number of rotations of the screw can be changed by the handle depending on the pulverization state. FIG. 3 is a view of the screw cylinder (82) of the wet pulverizer, showing the inlet (8
5) Wood powder amorphous carbon outlet forming a drawing mechanism (8
3), crushing water (84), excess crushing water outlet (86), etc., made of stainless steel. The pulverized carbide becomes an amorphous carbon powder, and after being pulverized, is stored in a pulverized coal hopper (45).

6) Waste gas treatment equipment includes a chimney (37), a fire extinguisher and a waste smoke washer (46), and a fire extinguishing drainage filter (47).
Consists of Wash water is taken from a water supply source, and water is sprayed on the wall inside the fire extinguisher (46) with a water spray ring (48) to form a water film on the wall to extinguish fire powder and wash waste gas. The water after washing is collected in a fire extinguishing water receiving funnel (49) and sent to a fire extinguishing drainage filter (47) through a drain pipe (59), where carbon fine particles are filtered and the filtrate is discharged. Fire extinguishing water is taken from a water source, a pressure indicator PI (51) is attached to the pipe to measure the water pressure, and a fire extinguishing water flow meter FI-3 (52) is installed in the pipe to measure the flow rate of the fire extinguishing cleaning water. A fire extinguishing water control valve (53) is mounted to control the flow rate to a predetermined amount. A predetermined amount of water is supplied to the fire extinguisher (46) under tap water pressure for operation.

7) In the carbide manufacturing apparatus including the carbonization furnace of the present invention, a very small number of units can be provided by, for example, providing a means capable of visually judging the state of the apparatus and remotely performing various operations required for operation, for example, at one corner of the furnace bottom. For example, it can be operated by one operator. The remote control devices necessary for the above are as follows. HC-1: Carbonization furnace drive motor rotation remote manual control (54) Same as above Switch HC-2: Combustion air flow remote manual control (55) HC-3: Belt conveyor speed remote manual control (56) Same as above Switch TI: Furnace bottom temperature indicator (40) SW-1: Screw-driven motor remote manual switch for feeding raw materials (57) SW-2: Combustion air blower remote manual switch (58) SW-3: Crusher drive motor Remote manual switch (59) The remote control devices and the like shown above are arranged on one instrument panel (87). The combustion state in the carbonization furnace (16) was visually checked with the above-mentioned furnace management viewing window (35), and the instrument panel (87)
Operate the instruments arranged according to the purpose to continue the optimal carbonization reaction. Thus, the operation of the carbonization furnace can be performed by one operator.

8) Next, the physical properties of the wood material for processing handled by the present apparatus will be described. Generally wood is cellulose,
It is composed of three main components, hemicellulose and lignin, and an extracted component. Cellulose is a fiber and hemicellulose belongs to polysaccharides. These two components are said to be the most organic substances on the ground, and weigh 3/4 of the total when dried. Lignin is a network polymer compound. While the three main components are macromolecules, the extracted components have low molecular weights and are at most about 1000 or less. The following phenomena occur when wood is tumble-dried in a tumble retort. When the wood begins to decompose, smoke is generated. Within wood, the three main components undergo the following changes: First, hemicellulose is 180
Thermal decomposition starts first at around ℃, generating decomposition gas. The most actively pyrolyzed temperature range is 250-300 ° C. Cellulose starts to decompose at about 240 ° C. and generates a decomposition gas. Decomposes most actively at 360-400 ° C. Lignin starts to decompose at about 280 ° C. and generates decomposition gas. Decomposes most actively at 500-560 ° C. Each of the above components liberates carbon contained after pyrolysis to form solid carbon. When the distillation temperature rises to 600 ° C. or higher, the free solid carbon reacts with the steam generated by the thermal decomposition of the three main components present in the atmosphere in the retort,
_{C + H 2 O = H 2} + CO-31.14kcal ( endothermic reaction), and to generate hydrogen. Through this process, free solid carbon is entirely formed into charcoal.

On the other hand, when the above-mentioned smoke generated during the distillation is cooled, a liquid product is obtained when cooled, and a gas product which is a gas without being liquefied is obtained. The liquid product is wood vinegar,
Wood tar is the main component, and the gaseous product is called wood gas and is a mixture of combustible low molecular weight hydrocarbons such as carbon monoxide, carbon dioxide, hydrogen, methane, ethylene (C ₂ H ₄ ). Two devices directly related to carbonization are a combustion air supply device (17) and a carbonization furnace body (16). The combustion air supply unit (17) supplies air necessary for carbonization to the carbonization furnace (1).
6) Send air into the furnace from around (or inside)
It has the function of promoting the chemical reaction of wood material such as sawdust and the dry distillation. On the other hand, the carbonization furnace (16) continuously accepts sawdust and the like, and rotates due to the avalanche caused by the physical properties of wood material such as sawdust in the furnace. Utilizing exercise, drying, combustion heating and carbonization are sequentially developed in the zone (zone) of the furnace inner length, and have the function of continuously carbonizing wood materials such as sawdust. The structure and operation of both will be described below.

9) Combustion air supply device The combustion air supply device (17) is an indispensable device in a rotary kiln type carbonization furnace, and by using this device, the furnace body can be rotated even during rotation. The combustion air can be injected from the outside (or inside) of the furnace, and the flow rate can be freely adjusted in real time according to the conditions in the furnace. Further, the oxygen concentration of the combustion air can be controlled by using an oxygen cylinder. It has a function that can be increased by using it, and therefore the combustion reaction in the furnace can also be organically controlled.

First, the combustion air supply device (17) will be described. The body of the device is shown in FIG. In the apparatus main body, a cylindrical rotary distribution ring (4) is fitted into a cylindrical fixed supply ring (2) in a loose fit to form a single body. The fixed supply ring (2) is a fixed metal piece, and the rotation distribution ring (4) rotates with the same rotation as the carbonization furnace main body (16) inside the fixed supply ring (2). Fixed supply ring (2)
Is fixed with a combustion air inlet pipe (1) for introducing combustion air, and is connected and fixed by a pipe to a combustion air blower (19) for sucking combustion air from outside. Rotary distribution ring (4) converts combustion air to carbonization furnace (16)
A combustion air outlet pipe (6) for fluid distribution on the inner peripheral surface of the cylinder is arranged and fixed on the circumference of the cylinder. FIG. 5 is an overall view of the combustion air supply device (17), which is attached to the device body (the portion where the fixed supply ring (2) and the rotary distribution ring (4) are united) and the carbonization furnace body (16). It is a figure which shows the related joint connected with the combustion air introduction pipe (10) which is. As can be seen from FIG. 5, the combustion air supply device (17) is a cylindrical device support fitting which is concentrically welded to a lid flange (22) serving as a lid of the carbonization furnace (16). (23) is fitted as a pedestal.

The rotary distribution ring (4) of the combustion air supply device main body (17) includes a combustion air outlet pipe (6) and an intermediate connecting pipe (8).
Combustion air inlet pipe (10) with pipe end fitting (9)
It is connected and fixed. In other words, as shown in FIG. 5, it can be seen that the carbonization furnace body (16) and the rotary distribution ring (4) are connected and connected by a pipe to form one body. It can be seen that the axis of the carbonization furnace body (16) and the axis of the combustion air supply device (17) are also on the same axis. As shown in FIG. 6 (A), a combustion air introduction pipe (10) is equally divided inside the furnace body, and combustion air is introduced by an air injection pipe (11) attached to the introduction pipe (10). Is simultaneously injected into the body of the carbonization furnace. A sectional view of the combustion air fixed supply ring (2) used in the present apparatus has a shape as shown in FIG. 6 (B). FIG. 7 is a sectional view of a combustion air supply device main body, and FIG. 8 is a front view of the device. The structure and operation of the combustion air supply device will be described with reference to FIGS.

The fixed supply ring (2) is cylindrical and made of steel or stainless steel, and has an air inlet pipe (1) through which combustion air is introduced. The inner surface is a high-grade mechanical finish, and a groove is formed on the inner surface to allow combustion air to pass through. This groove is called a combustion air circulation groove (3). This is the part marked with A in the symbol. The rotary distributor ring (4) is cylindrical and made of steel or stainless steel, the outer surface is finished by advanced machining, and fits loosely on the inner surface of the fixed supply ring (2). The outer diameter is finished with such dimensions. A combustion air outlet pipe (6) (C) for sending out combustion air is fixed to the rotary distribution ring (4). The outlet pipe (6)
8 to 10 or more are installed on the circumference of the distribution pipe (4) in accordance with the capacity. On the other hand, a hole having a diameter smaller than the width of the groove is machined at a position corresponding to the position of the air circulation groove (3) of the fixed supply ring (2) corresponding to the outlet pipe (6),
This hole and the hole of the outlet pipe (6) are connected to form a tunnel. This tunnel is an air communication tunnel (5)
This is called (B), and when combustion air enters the air circulation groove (3), it passes through the above-mentioned air communication tunnel (5) and reaches the air outlet pipe (6). According to the front view of FIG. 8, when the combustion air enters the air inlet pipe (1), it expands and flows into the air circulation groove (3) (where the mark of A is provided). On the other hand, since the opening of the communication tunnel (5) formed on the circumference of the rotary distribution ring (4) is within the width of the flow groove (3), the combustion air flows from the opening of the communication tunnel. (5)
(Place with B mark), then exit pipe (6) (C
(The place with the mark). In this structure, for example, even when the rotating distribution ring (4) is rotating together with the carbonization furnace, air flows from the air flow groove (3) of the fixed fixed supply ring (2) to the communication tunnel (5). Because of the inflow, the combustion air is always discharged from the air outlet pipe (6). That is, even if the carbonization furnace is in a rotating state, a controlled predetermined amount of combustion air is always supplied into the carbonization furnace, and the service is controlled by the combustion air supply device (17).

10) Structure of Carbonization Furnace and Its Operation The structure of the carbonization furnace is shown in FIG. 9 in a cross-sectional view of the carbonization furnace. The structure will be described with reference to FIG. The outer shell (60) of the furnace is made of steel plate, and the entire inside thereof is heat-insulated by casters (64). The furnace as hardware is divided into three parts: a body part (61), a reduced diameter part (62), and a narrowed part (63). The torso part (61) is the main part, and is the largest part in both the diameter and the torso length. It is a place where drying, burning, heating and the like of wood materials such as sawdust materials are performed, and the main work is performed during the work. The diameter reducing portion (62) is a portion where the diameter of the body is gradually reduced, and is a portion where the carbide is scraped and separated. The narrow portion (63) is a cylindrical portion having a small outer diameter and a portion for discharging carbide.

Next, the structure installed inside the furnace will be described. Inside the body part (61), there are combustion air introduction pipes (10) arranged at equal intervals, and the combustion air injection pipe (11) attached to the introduction pipe (10) is a furnace body. The inlet tube (10) is fixed to the inner wall of the furnace body by welding in a direction toward the center. The raw material moving blades (65) are welded and fixed to the inner wall of the furnace body at an angle of α as shown in FIG. 9 with the combustion air introduction pipe (10) interposed therebetween. The combustion air introduction pipe (10) is the combustion air supply device (17) described above.
And combustion air is injected into the furnace from the injection pipe (11) to promote a combustion reaction. The raw material moving blades (65) have an action of moving the raw material moving blades (65) to the axial outlet using avalanche movement of wood material such as sawdust in the body of the furnace body. This is because the raw material moving blade (65) is fixed with an inclination angle of α as shown in FIG. In other words, since the axis of the carbonization furnace is installed horizontally,
Thrust must be applied in the axial direction of the carbonization furnace to move wood materials such as sawdust.
Is installed at an angle. Next, the role of the raw material moving blade (65) in the carbonization furnace in terms of chemical engineering will be described. FIG. 10 is a schematic explanatory view of the raw material carbonization process. For example, when wood materials such as sawdust are burned by combustion air to form a grate (95) of a certain size by charcoal in the furnace, they are continuously charged. Wood material such as sawdust burns and makes charcoal fire, which becomes a grate,
On the other hand, a process is shown in which the charcoal moved from the grate is cooled to become charcoal and continuously discharged as amorphous carbon. Thermal decomposition of hemicellulose in the temperature zone of 180-300 ° C, thermal decomposition of cellulose in the temperature zone of 240-400 ° C, thermal decomposition of lignin in the temperature zone of 280-550 ° C,
In the temperature range of 500 to 1000 ° C., carbonization proceeds and hydrogen is generated. In the continuous operation of the actual carbonization process, wood materials such as sawdust put into the carbonization furnace first enter the drying zone (66) in the furnace, and flow through the furnace in a high temperature atmosphere due to the rotation of the furnace. The water content is evaporated by being stirred and dried, and a water vapor generation layer (70) is formed in the drying zone of FIG. 9 in the same manner as shown in FIG. The behavior of the wood material such as raw materials in the furnace in this state is shown by X-
It is X arrow view, and it is performing the avalanche movement which makes the avalanche at the angle of repose X. In the actual measurement, the angle X exceeds 60 degrees in the case of using only the raw material for woody carbide having a water content of about 65%.
In addition to heating and stirring, the raw material moving blades (65) further move the raw material for woody carbide in the carbonizing furnace toward the axial outlet with the lapse of time and gradually dry. in this case,
The angle of repose X moves while gradually decreasing its value in response to the evaporation of water. This phenomenon reduces the water content by evaporating the adhesive force between the raw materials due to the water content,
It means that the adhesive force decreases. Accordingly, the angle of repose also becomes smaller corresponding to this phenomenon. The raw material moving blade (65) determines the moving speed (m / min) of the raw material in the field of the number of rotations, and the transfer amount (kg / min) is determined by the raw material moving blade (65).
Determined by the length of The length of the raw material moving blade (65) in the drying zone (66) is characterized in that it is one plate length that is adapted to the length of the drying zone (66). The reason why there is no moving blade between the raw material moving blade for the drying zone and the raw material moving blade for the combustion heating zone is that the upper limit of the grate in the combustion heating zone exists at the end of the drying zone, This is because the grate near the top is limited to avalanche movement only, and the grate is held so as not to change its position for stable holding.

FIG. 12 is a view showing the avalanche motion of the raw material and the like in the carbonization furnace viewed from the YY section in FIG.
This is a phenomenon occurring in the combustion heating zone (67). The angle of repose here is an angle of about 30 degrees in actual measurement, and avalanche movement occurs in this state. In this zone, there is a mixture of the grate and the raw materials in the dry distillation, and the water content is zero. Therefore, the angle of repose in the combustion heating zone (67) does not greatly change. In the combustion heating zone (67), the raw material is agitated by gentle rotation of the furnace body (linear velocity 30 to 40 mm / sec), mixed with the charcoal constituting the grate, and supplied from the combustion air injection pipe (11). The raw material is dry-dried into charcoal by igniting and burning by air or the heat of the grate, while the wood vinegar-derived dry gas generated by dry-drying comes in contact with air and burns to generate heat and supply heat to the supplied raw material. give. The charcoal becomes charcoal and remains on the grate as new thermal energy. This new thermal energy plays a role of thermal metabolism to keep the fire bed stable. In other words, the combustion heating zone (67) heats the raw material supplied on the basis of the grate as a heat source, efficiently heats it by the stirring action by rotation, and makes it dry, and burns it in the presence of air to produce a charcoal fire. It is considered to be a place where heat energy is retained in the form of a grate, while heat energy is created.

The conditions for stabilizing the grate in the furnace and continuously progressing the carbonization are as follows: a) It is necessary that the water content of the raw material as the input raw material is 10% or less. Excess moisture consumes heat energy for evaporation, inhibits the process of thermal metabolism, consumes the heat energy of the grate, and eventually extinguishes the fire. b) The amount of raw material input such as sawdust material needs to be quantified by control. In the case of thermal metabolism, if it is excessive, the raw material is directly mixed with the carbide, lowering the quality of the carbide.
Used as a heat source, the char yield is zero. c) The rotation speed of the furnace must be an appropriate value. The rotation speed is directly related to the moving speed of the raw material in the furnace,
Affect the residence time in 7). The moving speed needs to be less than the combustion reaction time. Therefore, the material moving blade in the combustion heating zone (67) is not one sheet long but 1/1 of the length of the combustion heating zone as in the drying zone (66). It is necessary to set the length to 3 or less so that the moving speed can be controlled by rotation. The linear rotation speed of the furnace is 30 to 40 mm /
sec. d) The atmosphere temperature in the furnace must be 700 ° C. to form a flame hot air layer (73). It is not necessary to raise the temperature to 700 ° C or higher,
The temperature at the furnace tail discharge outlet temperature in the range of 380 to 450 ° C. is a temperature suitable for carbonization.

FIG. 13 is a view showing the flow of carbide in the carbonization furnace viewed from the ZZ section in FIG. 10, and shows the phenomenon occurring in the carbonized zone (68). This angle of repose is an angle of about 25 degrees in actual measurement, and the avalanche movement is occurring in a stable state. The carbonized zone (68) is composed of 100% amorphous carbon. As can be seen in FIG.
About half of 8) is due to the grate in the combustion heating zone (67). The rotation of the furnace causes avalanche motion, and the coal fire in the grate moves to the carbonized bed (72) by the action of the raw material moving blades (65). The moved charcoal is cooled and turned into carbide. The amount of the charcoal fire that has moved to the charcoal layer (72) is replenished as charcoal from the dry layer (71) on the boundary layer between the combustion heating zone (67) and the dry zone (66) due to the thermal metabolism described above. Carbonized zone (6
The carbide passing through 8) enters the discharge zone (69) by the action of the raw material moving blade (65), and further rotates and rotates the raw material moving blade (65).
Is discharged out of the system by the action of The outer diameter of the discharge zone (69) is smaller than the diameter of the furnace body, so that the carbonized zone (68) is a reduced diameter portion (65). This is because sawdust and the like are accumulated in the furnace body (61), and the outside diameter of the outlet is reduced because the volume of the sawdust is reduced to about 1/5 by carbonization. FIG. 14 is a diagram corresponding to FIG.
FIG. 4 is a cross-sectional view of the carbonization furnace as viewed along the line XX, showing the arrangement of the raw material moving blades (65), the combustion air introduction pipe (10) and the air injection pipe (11) in the furnace, and shows the kiln shell (60). ), Showing the pattern of the caster (64) to be installed on the inner surface.

11) Pulverizing device and its operation The shape of the carbides discharged from the discharge zone (69), that is, the amorphous carbon is small when the sawdust and other woods are observed. Although it is charcoal, the charcoal of wood chips has various shapes, so that the amorphous carbon discharged from the discharge zone (69) has a variation in particle size due to the overall shape. It is not in a state where it can be used greatly. In other words, a mixture of various shapes, large and small, has a low added value in terms of quality.

By carbonizing at 700 ° C., the hardness of amorphous carbon obtained from wood such as sawdust is extremely low (much lower than talc hardness 1) and can be easily pulverized. Therefore, if the amorphous carbon separated by the furnace bottom hood (27) is pulverized on a production line and taken out as an amorphous carbon powder having a uniform particle size, the amorphous carbon is given a high added value. The device for crushing the amorphous carbon of wood such as sawdust is a screw-type wet crusher (38) using a crushing screw (43) as shown in FIG. 2 at which a controlled amount of water can be injected. . The structure of this machine will be described. The charcoal separated from the furnace hood (27) enters the coarse crushing section (75) of the crusher from the woody carbide inlet (85) shown in FIG. The main part of the crusher is a crushing screw (43) as shown in Fig. 2.
The structure of the flight. It is shaped by the flight crushing flight (78), extrusion flight (79) and grinding flight (80) that make up the screw. The crushing flight (78) constitutes a coarse crushing section (75), and the outer diameter of the flight has a saw-toothed cut, whereby coarse crushing of the charcoal lump is performed. In the coarse pulverization mechanism, a large solid charcoal lump is bitten by a pulverizing flight (78) to break the solid charcoal lump by the screw cylinder surface and the flight, and further coarsely pulverized by a clearance between the cylinder surface and the flight. In order to increase the crushing efficiency, a water control valve for crushing (42)
A predetermined amount of water controlled by the above is injected. Therefore, after the coarse grinding, the charcoal is cooled by water injection and 15%
Contains water inside and outside, as a powder
State (Phenic State) or Capi
llary State (capillary state). The charcoal after the coarse pulverization enters the extruding section (76) and moves by the extruding flight (79). Extrusion flight (7
9) has the same shape as a general screw flight, and its tasks are extrusion, movement, and compression. The extruded and moved coarsely pulverized charcoal enters the pulverizing section (77). In the crushing section (77), crushing is further performed by a crushing flight (80). The pulverization of this part is performed by the following mechanism. That is, the crushing flight (80) is a thick flight, and a large number of grooves are machined on its outer peripheral surface. The coarsely pulverized charcoal particles are crushed and finely pulverized by the clearance between the screw cylinder surface and the flight to extrude the charcoal. Since the outlet of the cylinder body (82) is a throttle mechanism (83), the resistance to the extrusion is increased. Accordingly, the charcoal particles are extruded while being filled and compacted in the cylinder body (82). On the other hand, the effect of water injection appears in the pulverizing section (77) as a fine pulverizing effect. Finely pulverized charcoal is stored as a powdered amorphous carbon in a powdered charcoal hopper (45) to become a product. The particle size distribution of the product is shown in FIG.

12) Remote control device and its operation Since the heat source of this device is based on the burning of wood pieces as waste material, the load is lower than that of a furnace using gas or liquid fuel as a heat source. It is quite difficult to maintain the temperature inside the furnace with respect to changes in the temperature. For example, in the case of gaseous or liquid fuel, holding the furnace temperature with respect to the load detects the furnace temperature, and the gas or liquid fuel is proportionally proportional to the temperature deviation, or proportional + integral. This is made possible by supplying and burning as a quantity. The reason for this is that the time constant for combustion of gas or liquid fuel is small. In other words, this results in a fast combustion response to the load in the furnace. That is, if the combustion response is early, it means that the load can be controlled.

From the above discussion, the difficulty in maintaining the furnace temperature due to the burning of the wood pieces against the load is obvious from the fact that the burning response of the wood pieces is extremely slow (the time constant is extremely large). Since burning wood materials such as sawdust involves difficulty in terms of combustion theory, this device focuses on the extremely large time constant for burning wood fragments. The experimental plant confirmed that it could be controlled by control, and developed the following remote manual control method for the rotary combustion furnace combustion system. a) Remote control of carbonization furnace rotation speed b) Remote manual control of combustion air flow c) Remote manual control of wood material input d) Furnace bottom temperature indicator e) In-furnace combustion monitoring window

A) How the remote control of the carbonization furnace speed is related to the carbonization process of wood material such as sawdust will be described. Inside the carbonization furnace in a certain rotation state, as shown in FIG. 10, the drying zone (66), the combustion heating zone (67), and the carbonization zone are formed by the action of the inclination and length of the raw material moving blade (65). A band (68) and a discharge band (69) appear. This phenomenon is a result of the speed at which the material to be carbonized in the furnace is moved by the action of the raw material moving blades (65) by the rotation of the carbonizing furnace. When this moving speed is synchronized with the combustion response of the material to be carbonized, that is, the time constant of combustion, the carbonization process forms a distribution of positions in the carbonization furnace, that is, the above-mentioned band, due to combustion, dry distillation, carbonization and the like of the material to be carbonized. As described above, the progress of combustion in the furnace (avalanche, dry gas generation, flames on the grate, etc.) was checked from the furnace combustion monitoring window (35) to check the progress of the combustion. This results in remotely adjusting the furnace speed.

The structure of the carbonization furnace rotation speed remote manual control using hardware will be described. The remote controller HC-1 (54) attached to the operation panel (87) installed at the furnace bottom is connected to the furnace body drive motor converter (32) by a signal operation wire. On the other hand, the furnace body drive motor converter (32) is composed of a synchronous motor and is attached to the furnace body variable speed reduction drive motor (18). The converter (32) rotates either forward or reverse according to an electric signal sent from the remote controller HC-1 (54).
That is, the furnace body drive motor converter (32) controls the variable operation section of the furnace body variable deceleration drive motor (18) by the remote controller HC-1 (54).
In response to the electric signal, the motor is operated by a synchronous motor to change the rotation speed of the variable furnace drive motor (18). Therefore, if a human operates the remote controller HC-1 (54) in either forward or reverse direction, the result immediately appears on the furnace body variable speed reduction drive motor (18), and the rotation speed of the carbonization furnace (furnace) Change the linear velocity within).

B) How the remote manual control of the combustion air flow rate relates to the carbonization process in the carbonization furnace will be described. As described above, the drying zone (66), the combustion heating zone (67), the carbonization zone (68), and the like are formed in the carbonization furnace in the normal operation. First, the relationship with the dry zone (66) will be described. FIG. 11 is a view schematically showing a state (avalanche) caused by rotation of the carbonizing furnace made of wood material such as sawdust in the furnace as viewed in the direction of arrows XX of the carbonizing furnace. This zone is a drying process and the air injected from the lower part where the carbonized material is sitting is used exclusively for evaporating the moisture in the carbonized material,
Since there is no grate (heat source), combustion does not occur. The amount of air supplied is proportional to the area obtained by multiplying the length of the seat position by the length of the drying zone, and flows into the hot air (flow) space. Next, FIG.
FIG. 2 is a diagram showing a model of the (avalanche) state in the furnace as viewed in the direction of arrows YY of the carbonization furnace. This part is the combustion heating zone, where the grate is formed by the charcoal fire, the grate and the dried carbonized material are mixed by the rotation of the furnace and the raw material moving blades (65), and the carbonized material is constituted by the heat of the grate. Organic substances are thermally decomposed and carbonized, and dry distillation gases (CO, CO ₂ , H ₂ , methane, ethylene, tar gas, etc.) are released. The charcoal fire in the grate is burned by the air injected from below the seat position of the combustion heating zone (67), and the dry gas generated by the pyrolysis is burned by the oxygen in the air supplied continuously, and A flame hot air layer is formed on the avalanche surface to raise the ambient temperature in the carbonization furnace.
Create a flame hot air space up to around ℃.

The combustion heating zone (67) receives the new carbonized material, carbonizes it and leaves a part on a new grate, while heating the carbonized material to form a charcoal while undergoing rotation and movement, and forms a carbonized zone ( It is moved to 68) and further cooled to make charcoal, which is a zone that continuously produces amorphous carbon. Therefore, combustion heating zone (67)
It is important to form while driving. How to use the remote control of air flow for combustion is described in the furnace viewing window (35).
By monitoring the state of the flame on the avalanche surface of the combustion heating zone (67), if the generation of smoke (drying gas) is reduced, the rotation of the carbonization furnace is reduced, and the amount of carbonized material is reduced. As a result, the load (carbonization target) of the combustion heating zone (67) is reduced to generate a carbonization reaction. For this purpose, it is necessary to increase the amount of combustion air. When the operation for reducing the rotation of the carbonization furnace is completed, the valve operation converter TM- is operated by operating the handle CH-2 (55) for manual flow control to increase the air flow.
2 (31) is deviated to slightly open the air flow control valve CV (21) to increase the air flow introduced into the carbonization furnace. If the handle CH-2 (55) for manual flow control is operated, the air flow control valve CV (21) responds immediately and increases the air flow. However, on the other hand, the behavior of the carbonized material mixed in the combustion heating zone (67) is a function of the number of revolutions of the carbonizing furnace.
Since the mixing time takes 10 times or more as long as the response time of the air control valve CV (21), it is desirable to operate the timing of increasing the air amount after visually confirming the combustion state in the furnace. . In addition, there is a problem of a reaction rate concerning the combustion of the carbonized material after mixing, and in order to cope with the problem, a combustion air blower (19) for increasing the oxygen concentration of air.
The end of the oxygen discharge pipe of the oxygen cylinder (89) is installed at the inlet (30) of the tank, and the oxygen concentration of the combustion air is increased by sucking the oxygen together with the suction of the air. Can increase the burning speed of the fuel.

C) In the remote manual control of the input amount of the wood raw material, the frequency is controlled by the converter (CH-3) (56) so that the amount of the carbonized material to be charged into the carbonization furnace is always charged at a constant load. It is controlled by changing the number of rotations of the drive motor that determines the speed of the conveyor (13). The magnitude of the moisture in the carbonized material affects the input amount. Moisture that does not hinder operation is 10% or less. In general, at least 1290 KJ of heat is required to evaporate 1 kg of water.
If it is contained as described above, it becomes difficult to improve the combustion state even if oxygen is blown in to assist combustion, and the amount of injection must be reduced.

D) Furnace bottom temperature indicator TI (40) is installed to measure the temperature of waste gas discharged from the bottom of the furnace. Is in a good combustion state, indicating that the carbonization process is proceeding well. If the temperature of the waste gas is lower than 300 ° C., the combustion state in the furnace is not stable, indicating that heat energy is consumed exclusively for evaporation of moisture. e) Since it is not possible to measure various physical properties during the carbonization process in the furnace, the combustion state of the material to be carbonized in the furnace and the state of dry distillation are observed through the furnace combustion monitoring window (35). By making a judgment and adjusting the number of revolutions of the carbonizing furnace, the amount of combustion air, the input amount of the material to be carbonized, and the like by manual remote control, the present apparatus can continuously perform the carbonizing operation.

That is, since the state relating to the combustion of the carbonized material in the carbonization furnace is similar to spontaneous combustion, the time constant (about 20 minutes) in the combustion reaction process is extremely large. Therefore, the relation between the dynamic characteristics of the carbonization process caused by this phenomenon and the three factors considered as disturbances of this plant, namely, the amount of input material, the amount of combustion air, and the number of revolutions of the carbonization furnace, should be stoichiometrically functioned. It is difficult. However, experiments confirmed that the operation time, including the response time by remote manual control, was much smaller than the time constant of the combustion reaction process. In other words, it became clear that the time constant of the combustion reaction process was much larger than the time constant of remote manual control performed by humans. It has been proved that this is true. Here, we adopt a human empirical reference value called "visual"
A method was developed to control the carbonization process by controlling the disturbance by manually controlling the three elements of the disturbance of the present process by remote manual control. This method can be described by a block diagram as shown in FIG.

[0043]

[Example] Sawdust, precut waste, small wood chips, etc., discharged as industrial waste from a wood processing plant are used as raw materials for a monthly production of 15
A rotary carbonization furnace of the present invention for producing a ton of amorphous carbon powder was prototyped. The size of the carbonization furnace is 140
0, length 1900, diameter narrowing part is length 900, narrowing part is outer diameter 660, length 600, and total length of the apparatus is 7 m. Using this equipment, wood materials such as sawdust were burned to form a grate, and it was confirmed that amorphous carbon could be continuously produced using the amount of heat generated by self-combustion. In particular, the air for combustion, the rotation speed of the furnace,
The control of the feed rate of the raw material was surely effective, and the maintenance of the fire bed was maintained, and the production of amorphous carbon was smoothly performed.
The particle size of the woody powdery amorphous carbon finally discharged as a product has a distribution as shown in FIG. 15, and can be used as a raw material for woody activated carbon immediately with a powder of mode 100 mesh.

[0044]

The wood material, such as sawdust, tested with this apparatus is industrial waste from a wood processor, but could produce good quality amorphous carbon powder. It is obvious that the application of amorphous carbon is extremely promising as a raw material for wood-based activated carbon.However, wood materials such as sawdust from wood processing plants are never large when calculated backward for mass production of activated carbon. It can not be said. However, high-purity wood-based industrial waste can be found in large quantities in, for example, the food industry.If the carbide is produced by a carbonization method using a self-combustion heat source as in this method, the production cost In addition to the low cost, high-purity amorphous carbon can be obtained. Therefore, it is most suitable as a raw material for woody activated carbon for purifying water such as water and rivers. On the other hand, this equipment is a special type of industrial waste that can be converted to valuable and valuable charcoal without generating toxic gas by treating high-purity woody industrial waste in this way. It is also a processing device.

[Brief description of the drawings]

FIG. 1 is a carbide production apparatus including a carbonization furnace of the present invention.

FIG. 2 shows a grinding screw.

FIG. 3 shows a screw cylinder for grinding.

FIG. 4 is a combustion air supply device.

FIG. 5 is an overall view of a combustion air supply system.

FIG. 6A is an arrangement state of combustion air introduction pipes around a carbonization furnace body, and B is a cross-sectional view of a fixed supply ring.

FIG. 7 is a cross-sectional view of a combustion air supply device main body.

FIG. 8 is a front view of a combustion air supply device main body.

FIG. 9 is a cross-sectional view of a carbonization furnace.

FIG. 10 is a schematic explanatory view of a raw material carbonization process.

FIG. 11 is an avalanche state diagram of a carbonized material in a dry zone in a furnace, as viewed from arrows XX.

FIG. 12 is an avalanche state diagram of the carbonized material forming the in-furnace combustion heating zone grate as viewed in the direction of arrows YY.

FIG. 13 is an avalanche diagram of charcoal in a carbonized zone in the furnace, as seen from the direction of arrows ZZ.

FIG. 14 is a cross-sectional view of the carbonization furnace, as viewed from arrows ZZ.

FIG. 15 shows the particle size distribution of pulverized amorphous carbon.

FIG. 16 is a control block diagram of a carbonization process in a carbonization furnace.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Combustion air inlet pipe 2 Fixed supply ring 3 Combustion air circulation groove 4 Rotation distribution ring 5 Communication tunnel 6 Combustion air outlet pipe 7 Fixed supply pipe holding fixture 8 Intermediate connection pipe 9 Pipe end fitting 10 Combustion air introduction pipe 11 Combustion air injection tube 12 Raw material cart rich 13 Belt conveyor 14 Raw material hopper 15 Raw material input screw 16 Carbonization furnace (main unit) 17 Main unit for combustion air supply 18 Kiln deceleration drive motor 19 Air blower for combustion 20 Air flow meter for combustion (FI-1) 21 Combustion air flow control valve 22 Lid flange 23 Device support bracket 24 Kiln rotation sprocket gear 25 Tire 26 Tire roller 27 Furnace bottom hood 28 Ignition plug 29 Wood chip insertion plug 30 Air intake 31 Valve operation Converter 32 Furnace body drive motor converter 33 Reduction gear motor for material input 34 Air residual heat Pipe 35 Furnace management viewing window 36 Thermocouple 37 Chimney 38 Screw type charcoal crusher 39 Temperature converter 40 Furnace bottom temperature indicator (TI) 41 Water flow meter for crushing (FI-2) 42 Water control valve for crushing 43 Pulverization Screw 44 crusher drive motor 45 powdered charcoal hopper 46 powdered fire extinguisher 47 drainage filter 48 sprinkling link 49 fire extinguishing water receiving funnel 50 drainage pipe 51 pressure indicator 52 fire extinguishing water flow meter (FI-3) 53 fire extinguishing water control valve 54 HC-1 furnace body drive motor rotation speed remote manual controller 55 HC-2 combustion air flow remote manual controller 56 HC-3 belt type conveyor speed remote manual controller 57 SW-1 screw drive motor power supply opening and closing Machine 58 SW-2 Air blower power switch for combustion 59 SW-3 Crusher drive motor power switch 60 Kiln shell 61 Body 62 Diameter reducing part 63 Narrowing part 64 Caster 65 Raw material moving blade 66 Drying zone 67 Combustion heating zone 68 Carbonized zone 69 Drainage zone 70 Steam generation layer 71 Drying layer 72 Carbonized layer 73 Flame hot air layer 74 Exhaust air layer 75 Crushing section 76 Extruding section 77 crushing section 78 crushing flight 79 extrusion flight 80 crushing flight 81 screw shaft 82 cylinder body 83 squeezing mechanism 84 water inlet 85 woody carbide inlet 87 operation panel 88 conveyor motor rotation converter 89 oxygen cylinder 95 fire bed 96 air

Claims (4)

(57) [Claims] 1. A body comprising: a body portion, a narrowed portion, and a narrowed portion. The body portion is provided in parallel with the inner wall surface of the body portion, and has a plurality of annularly arranged injection holes having an inward direction in the body portion. And a plurality of blades, each of which is provided in series with a plurality of blades that are slightly inclined with respect to the body axis in the interior of the combustion air introduction tube group and the combustion air introduction tube group. A group is provided in an annular shape. Following the body portion, a diameter narrowing portion having a blade group that is continuously narrowed in diameter from a portion connected to the body portion and has a blade group slightly inclined with respect to the axis inside is provided. Further, a narrowing portion having a blade group which is the same in diameter as the end portion of the reduced diameter portion and which is slightly inclined with respect to the axial center is provided from the end portion of the reduced diameter portion to the end of the reduced diameter portion. Is provided with a carbonizing raw material input device and a combustion air introducing device at the end, and a carbide discharge portion at the end of the narrowed portion. Rotary carbonization furnace. 2. The rotary carbonization furnace according to claim 1, further comprising a furnace tail hood having a chimney and a device for discharging carbides, following the discharge portion of the narrowing portion. 3. A combustion air introduction device, comprising: a fixed supply ring connected to a combustion air source and having a circulation groove therein capable of distributing combustion air to a plurality of parts; 2. The rotary carbonization furnace according to claim 1, comprising a rotary supply ring fitted and provided with a means for connecting the flow groove of the fixed supply ring to the combustion air introduction pipe of the body portion. 4. A remote control unit for controlling the number of revolutions of the carbonization furnace, a remote control unit for controlling the air flow for combustion, a manual control unit for feeding the amount of raw material for producing woody carbide, a furnace bottom temperature indicator, and a combustion monitoring window in the furnace. 2. The rotary carbonization furnace according to claim 1, wherein the carbonization furnace has a remote manual control method for the carbonization process.