JP4028899B2 - Carbonization equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to carbonization apparatus for manufacturing building waste wood, thinned wood, etc. The pulverizng-obtained raw material chips and buckwheat, charcoal by carbonizing the agricultural waste such as rice hulls.
[0002]
[Prior art and its problems]
Charcoal used for soil quality improvement has been used by crushing imported charcoal imported from abroad in recent years, but in recent years it has been converted into chips by crushing waste construction wood and thinned wood to protect agricultural and forestry resources. It has been practiced that charcoal and agricultural waste such as buckwheat husk and rice husk are carbonized and used as charcoal.
[0003]
FIG. 2 is a conceptual diagram of a conventional stirring flow type carbonization apparatus.
The interior of the furnace (11) is divided into an agitation section (11a) located above by a dispersion plate (11c) and an air supply section (11b) located below.
The raw material is charged into the stirring section (11a) by a motor (13) controlled by a temperature controller (12) that detects the temperature in the furnace, and is stirred in the stirring section (11a) by a stirrer (14). Air is sent from the air supply unit (11b) to the stirring unit (11a), and the raw material in the stirring unit (11a) is carbonized. The carbide is discharged out of the furnace through a carbide discharge port (15) provided on the side surface of the stirring section (11a). The exhaust gas is discharged through the cyclone (16) and discharged out of the apparatus.
[0004]
However, in this system, the contact between the raw material and air increases, the raw material burns more than necessary, and the amount of carbide obtained is reduced, resulting in poor production efficiency.
[0005]
FIG. 3 is a conceptual diagram of a screw furnace type carbonization apparatus. In this method, the raw material is charged into a carbonization cylinder (21) provided in the heating chamber (23), and moved inside the carbonization cylinder (21) by a screw (22) provided in the carbonization cylinder (21). Heat to carbonize. This heating is performed by burning dry distillation gas discharged from the carbonization cylinder (21) and auxiliary fuel supplied from the auxiliary fuel inlet (24).
[0006]
In this method, since the raw material is indirectly heated, the heating efficiency is poor, which is not preferable in that much energy is consumed for production.
[0007]
Therefore, there is a need for a carbonization apparatus that can continuously and efficiently carbonize the raw material.
[0008]
[Means for Solving the Problems]
The carbonization device of the present invention is a carbonization device that uses wood chips obtained by pulverizing building waste wood, thinned wood, etc., and agricultural waste such as buckwheat husks, rice husks, etc. as raw materials. An ignition chamber (2) for incomplete combustion to generate carbon monoxide gas and a secondary air supply port (3c) to which air is supplied are provided at the top, and carbon monoxide led from the ignition chamber (2) Gas combustion of the gas and air supplied from the secondary air supply port (3c), carbonizing the raw material by radiant heat of the gas combustion and discharging the carbide, and the raw material from the ignition chamber (2) A transport mechanism (4) and (5) for guiding to the carbonization chamber (3) is provided.
[0009]
Furthermore, in addition to the above, a drying chamber (1) for drying the raw material prior to ignition, and a transport mechanism (4), (5) for guiding the raw material from the drying chamber (1) to the ignition chamber (2) And the combustion gas introduced from the carbonization chamber (3) is used for drying the raw material.
[0010]
[Embodiment]
The present invention will be described below with reference to preferred embodiments. FIG. 1 is a conceptual diagram of the carbonization apparatus of the present invention.
In this example, a thinned wood chip was used as a raw material. Since the thinned wood is not sufficiently dry, it is not directly fed into the ignition section (2), but is supplied from the raw material inlet (1a) provided in the drying chamber (1), and after passing through the drying process, the ignition chamber (2) To guide you to.
In addition, when using dry things, such as building waste wood, as a raw material, you may make it abbreviate | omit a drying chamber (1) and throw in into an ignition chamber (2) directly.
Drying reduces the consumption of energy by guiding the combustion gas generated in the subsequent process from the combustion gas inlet (1b) to the drying chamber (1) for effective use. The exhaust gas is discharged from the exhaust gas outlet (1c) and removed.
[0011]
The raw material is sent to the next process from the raw material input port (1a) by a blade (5) attached to a shaft (4) provided so as to penetrate each chamber (1), (2), (3). This shaft (4) was made into a pipe shape for heat resistance, and a water-cooled type in which a water flow flows inside. The blades (5) may be screw-shaped, and the shape and number of the blades (5) may be appropriately determined according to the transport amount.
[0012]
The ignition chamber (2) is provided with a burner port (2b), and a flame from the burner is guided into the room. Further, primary air is supplied into the room through the dispersion plate (2a). As the dispersion plate (2a), a refractory metal punching metal, a rooster, a brick having a hole, or the like can be used.
The material is incompletely burned by adjusting the supply amount of the supplied primary air to the minimum necessary. The carbon monoxide gas generated by this incomplete combustion passes through the carbon monoxide gas passage (8) provided in the upper part of the partition wall (7) between the ignition chamber and the carbonization chamber, and enters the next carbonization chamber (3). It is led to the upper gas combustion zone (3a).
[0013]
The secondary air supply port (3c) provided above the carbonization chamber (3) is supplied with secondary air necessary for burning the carbon monoxide gas sent from the ignition chamber, and the gas combustion zone In (3a), the carbon monoxide gas burns. Heat from the combustion is radiated to the material, but the material is carbonized without burning because the carbonized region (3b) near the material is in an oxygen-free state. In the carbonization chamber (3), in order to carbonize the material more efficiently, the paddle (6) twisted like a blade attached to the shaft (4) is stirred up and down to the carbide outlet (3d). Transport.
The carbide thus obtained is discharged out of the apparatus through the carbide outlet (3d). As described above, the combustion gas is sent from the combustion gas discharge port (3e) to the drying chamber (1) (the description of the combustion gas path is omitted in the figure), and is used for drying the material.
[0014]
In addition, as shown in FIG. 4, you may provide the raw material supply apparatus (9) for charging a raw material into a drying chamber (1) or an ignition chamber (2).
[0015]
【The invention's effect】
As described above, according to the present invention, since it can be directly heated and carbonized by radiant heat in an oxygen-free state, the raw material is burned too much and the ratio of ashing is small, and a large yield can be obtained. Furthermore, since less fuel is required, carbides can be obtained efficiently and continuously.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a carbonization apparatus of the present invention.
FIG. 2 is a conceptual diagram of a conventional carbonization apparatus (part 1).
FIG. 3 is a conceptual diagram of a conventional carbonization apparatus (part 2).
FIG. 4 is a conceptual diagram of a carbonization device provided with a raw material supply device.
[Explanation of symbols]
(1) Drying room
(1a) Raw material input
(1b) Combustion gas inlet
(1c) Exhaust gas outlet
(2) Ignition room
(2a) Air distribution plate (primary air supply port)
(2b) Burner port
(3) Carbonization chamber
(3a) Gas combustion zone
(3b) Carbonized zone
(3c) Secondary air supply port
(3d) Carbide outlet
(3e) Combustion gas outlet
(4) Shaft
(5) Feather
(6) Paddle
(7) Bulkhead (between ignition chamber and carbonization chamber)
(8) Carbon monoxide gas passage
(9) Raw material supply equipment

Claims (2)

It is a carbonization equipment that uses wood chips obtained by crushing building waste wood, thinned wood, etc., and agricultural waste such as buckwheat husks, rice husks as raw materials,
An ignition chamber for igniting the raw material and incompletely burning the raw material to generate carbon monoxide gas;
A secondary air supply port to which air is supplied is provided in the upper portion, and carbon monoxide gas guided from the ignition chamber and air supplied from the secondary air supply port are gas-combusted, and by the radiant heat of the gas combustion A carbonization chamber for carbonizing the raw material and discharging carbide,
A carbonization apparatus comprising: a transport mechanism for guiding the raw material from the ignition chamber to the carbonization chamber. A drying chamber for drying the raw material prior to ignition, and a transport mechanism for guiding the raw material from the drying chamber to the ignition chamber,
2. The carbonization apparatus according to claim 1, wherein the raw material is dried by using combustion gas introduced from a carbonization chamber.

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