JP3453574B2 - Charcoal making method and charcoal making furnace - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a charcoal manufacturing method and a charcoal manufacturing furnace.

[0002]

2. Description of the Related Art A charcoal furnace is a furnace for burning charcoal by burning fuel at a mouth to heat wood (carbon material) in a carbonization chamber and thermally decomposing pyrolysis components in wood. In a conventional charcoal furnace, a method of obtaining a predetermined carbonization temperature by generally burning wood (carbonaceous material) in a carbonization chamber after the wood is burned at a bonnet is generally used. For example, in the actual Kaihei 5-81259, after burning the wood fired at the heating port to bring the ceiling part in the furnace to 300 ° C., it is judged that the carbonization has ended by the color tone of the smoke in that state, and ventilation is made again from the heating port. The charcoal is obtained by vigorously heating the inside of the furnace to about 700 to 800 ° C and sealing the firing port to cool it.
In this method, the wood (carbonaceous material) in the carbonization chamber is partially burned or erased in the vicinity of the combustion chamber where the temperature rises as described above or in the upper part of the furnace, and in the lower part of the furnace, poor circulation of heat causes raw burning. There is.

[0003]

As described above, according to the conventional method, the carbonaceous material (wood) in the carbonization chamber is burned out, the temperature inside the carbonization chamber is partially high in the upper part of the furnace, and the furnace has poor heat circulation. In the lower part, there remains a problem that the quality of the charcoal obtained by partially becoming low temperature becomes uneven.

The present invention has been made in view of the above problems of the conventional method. The object of the present invention is to efficiently circulate the heat burned in the combustion chamber and to operate it. It is intended to provide a simple charcoal manufacturing method and a charcoal manufacturing furnace.

[0005]

The charcoal making furnace according to the present invention has a combustion chamber on the side surface of the furnace body, and the combustion chamber is divided into upper and lower parts, each of which has a firing port. The firing opening can be reduced or closed. There is a partition plate between the combustion chamber and the carbonization chamber, which can be used either as a fixed method or as a detachable type, and has a vent hole through which flames and heat from the upper and lower combustion chambers can be circulated to the carbonization chamber. The carbonization chamber is configured so that the top or side of the furnace can be opened or closed, or can be attached or detached.
Take out the charcoal. At the bottom of the carbonization chamber, there is a bottom vent, which is connected to the bottom vent of the partition plate and communicates with the lower combustion chamber. The bottom vent also communicates with the flue. Flames, heat, etc. from the combustion chamber flow into the carbonization chamber through the upper and lower ventilation holes, which are composed of partition plates, and the furnace bottom ventilation hole, and the chimney passes through the flue while steaming the carbonaceous material in the carbonization chamber. Emitted from. In order to supply flame, heat, etc. from the lower combustion chamber to the carbonization chamber in a well-balanced manner, the partition plate is appropriately provided with one or more lower ventilation holes below the position of the partition wall of the combustion chamber for uniform carbonization. .

[0006] From the early stage to the middle stage of combustion, burning is performed in the upper combustion chamber. As a result, flames, heat, etc., pass through the upper part of the carbonization chamber and are drawn to the chimney while flowing down the furnace while being deprived of heat by the carbonaceous material. Therefore, the carbonaceous material in the carbonization chamber is sufficiently heated at the upper part and the intermediate part, and the progress of carbonization is smooth. In this way, when the upper and middle portions of the carbonaceous material are sufficiently heated, the combustion in the upper combustion chamber is stopped and closed, and the combustion is started in the closed lower combustion chamber. From this point, flame, heat, etc. flow into the carbonization chamber through the furnace bottom ventilation holes and lower ventilation holes provided in the partition plate, and heat the lower part of the carbonaceous material while passing through the lower surface of the carbonization chamber and the furnace bottom ventilation groove to promote carbonization. To do.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A charcoal manufacturing method and a charcoal manufacturing furnace according to the present invention divide a combustion chamber into upper and lower parts, burn a burning material in the combustion chamber, and divide the flame and heat into the upper and lower combustion chambers. Guide the air into the carbonization chamber through the ventilation holes in the plate, and burn the carbonaceous material in the upper combustion chamber for the period during which the upper and middle portions of the carbonaceous material are carbonized. Manufactures charcoal.

[0008]

Embodiments of the present invention will be described with reference to the drawings.
1 to 3, the furnace body 1 of the charcoal furnace is composed of a furnace shell 1a and a heat insulating material 1b. The upper combustion chamber 3 is provided on the side surface of the furnace body 1.
And a lower combustion chamber 5, each having an upper firing port 4 and a lower firing port 6. A combustion chamber partition wall 7 is provided between the upper combustion chamber 3 and the lower combustion chamber 5 so that they can be burned independently. The upper firing port 4 and the lower firing port 6 are made of a refractory, an iron plate, or the like, and are fully opened at the time of combustion for raising the temperature, reduced when the combustion is controlled, and closed when the combustion is stopped.
A partition plate 8 is provided between the combustion chambers 3, 5 and the carbonization chamber 2, and has an upper vent hole 9 communicating with the upper combustion chamber 3, a lower vent hole 10 communicating with the lower combustion chamber 5, and a furnace bottom vent hole 11. When the furnace bottom ventilation groove 12 is extended to the lower combustion chamber 5, the furnace bottom ventilation hole 11 of the partition plate 8 can be omitted. The partition plate 8 may be a fixed type or a detachable type, and is made of a refractory material, a heat insulating material, a heat resistant iron plate, or the like. Charcoal material 16 is packed in the carbonization chamber 2 and charcoal is manufactured while carbonizing. At the furnace bottom of the carbonization chamber 2, there are a furnace bottom vent 11 and a flue 13 provided in the partition plate 8.
There is a furnace bottom ventilation groove 12 that communicates with
The width and depth are kept at 5 and the upper part is open. The shape of the furnace bottom ventilation groove 12 is not specified and the number of grooves may be plural. Chimney 14 in the flue 13
Can be connected and smoke is discharged from the chimney 14.

In the method for producing charcoal using the charcoal furnace of the present invention, the charcoal material 16 is packed in the carbonization chamber 2, and temperature sensors are set at the upper, middle and lower parts of the furnace at the center of the furnace and the lid is closed. To do. The lid is not particularly specified as long as it can be opened and closed or can be attached and detached on the upper surface or the side surface of the furnace body 1 and can be sealed. Next, with the lower firing port 6 sealed, the firing material is loaded into the upper combustion chamber 3 from the upper firing port 4, and combustion is started while observing the thermometer. It is effective to reduce the burning in the combustion process and introduce air into the carbonization chamber 5 to burn the deposits and the like on the surface of the carbonaceous material 16. In the upper combustion chamber 3, FIG.
As indicated by point X, the combustion is stopped and sealed when the intermediate temperature exceeds 300 ° C., and the combustion port 6 of the lower combustion chamber 5 is opened to start combustion. Combustion continues until the point Y in FIG. 4, the lower temperature exceeds 400 ° C., the combustion work is completed at around 450 ° C., and the lower firing port 6 is sealed. After that, when the amount of smoke in the chimney 14 decreases, the chimney 14 is closed. After this, natural cooling is carried out, and as shown by the point Z in FIG. 4, charcoal is removed after the furnace temperature falls below 100 ° C.

Table 1 shows the working time and the amount of charcoal produced as a result of charcoal production using the charcoal production furnace according to the present invention.

[Table 1]

The results of producing charcoal using the charcoal furnace according to the present invention will be described with reference to Table 1. The time required for combustion was 6 hours 30 minutes, the cooling time was 17 hours 30 minutes, and charcoal could be discharged 24 hours after the start of combustion. In addition, as a result of conducting a test in a charcoal furnace having an internal volume of 2 lipometers, the carbon material was 500 kg and the finished charcoal was 120 kg. The coal output rate is as high as 24% when calculated from the relationship between the amount of charcoal and the amount of carbon material.

INDUSTRIAL APPLICABILITY As described above, the present invention is a charcoal manufacturing method and a charcoal manufacturing furnace capable of efficiently producing good quality charcoal, and has industrially excellent effects.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a charcoal manufacturing furnace according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the charcoal producing furnace according to the embodiment of the present invention as viewed in the direction of arrow A in FIG.

FIG. 3 is a cross-sectional view of the charcoal producing furnace according to the embodiment of the present invention as seen in the direction of arrow B in FIG.

FIG. 4 is a temperature transition in the carbonization chamber during charcoal production by the charcoal production furnace of the embodiment of the present invention.

[Explanation of symbols]

1 furnace body 2 carbonization chamber 3 Upper combustion chamber 4 Upper firing port 5 Lower combustion chamber 6 Lower firing port 7 Combustion chamber bulkhead 8 partition boards 9 Upper vent 10 Lower vent 11 Furnace bottom vent 12 Furnace bottom ventilation groove 13 flue 14 chimney 15 Furnace bottom ventilation groove bricks 16 carbon materials

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-6-166875 (JP, A) JP-A-8-109383 (JP, A) JP-A-8-209149 (JP, A) JP-A-10- 245565 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) C10B 53/02 C10L 5/44

Claims (2)

(57) [Claims] 1. A combustion chamber is provided on a side surface of a charcoal furnace main body, and a partition plate having a ventilation hole is provided between the combustion chamber and the carbonization chamber so that flame, heat, etc. generated in the combustion chamber can be circulated in the carbonization chamber. Is divided into upper and lower parts, and the upper and middle parts of the carbonaceous material in the carbonization chamber are mainly carbonized in the upper combustion chamber, and the lower part of the carbonaceous material in the carbonization chamber is mainly carbonized in the lower combustion chamber. . 2. A furnace bottom ventilation groove (1) is provided in the furnace bottom of the carbonization chamber (2).
2) is provided, and the upper combustion chamber (3) and the lower combustion chamber (5) are provided in front of the carbonization chamber (2), and
The lower combustion chamber (5) is communicated with the furnace bottom ventilation groove (12) in the lower part of the carbonization chamber, and the flue (1
A charcoal production furnace characterized by being configured by connecting 3).