JPH10273675A - Carbonizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and simply structured carbonizing apparatus capable of continuously carbonizing chaff and so on. SOLUTION: This carbonizing apparatus comprises; a rotatable shaft 12 disposed in a carbonizing chamber 1 to carbonize a raw material A and provided with a plurality of paddles 11 to mix the raw material A in the carbonizing chamber and convey the mixture toward an outlet, and air feed ports 13 to feed air to the fired raw material A for partial combustion thereof provided at the positions of the bottom or lower section of the carbonizing chamber 1 each corresponding to a space between the paddles 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbonizing apparatus for continuously carbonizing rice hulls and the like.

[0002]

2. Description of the Related Art Coal used for soil improvement has been used by crushing domestically imported coal in recent years. However, in recent years, in order to protect agricultural and forestry resources, agricultural waste such as rice husk has been carbonized. It is used as charcoal.

FIG. 4 is a conceptual view of a conventional screw furnace type carbonizing apparatus. In this method, the raw material is heated and carbonized while moving in the carbonization cylinder (21) by a screw (22) provided in a carbonization cylinder (21) provided in the heating chamber (23).
This heating is performed by combustion of the carbonized gas discharged from the carbonization cylinder (21) and the auxiliary fuel supplied from the auxiliary fuel inlet (24).

[0004] In this method, since the raw material is indirectly heated, the efficiency of heating is low, and it is not preferable in that a large amount of energy is consumed for production. In addition, the size of the apparatus becomes large, which causes problems in terms of facility costs and installation locations.

[0005]

Accordingly, there is a need for a carbonization apparatus having a small and simple structure capable of continuously carbonizing rice hulls and the like.

[0006]

A carbonization apparatus according to the present invention comprises a rotatable shaft in a carbonization chamber (1) for carbonizing a raw material (A).
(12) is disposed, and the shaft (12) is provided in the carbonization chamber (1).
A plurality of paddles (11) for stirring and transferring the raw material (A) of the raw material (A) in the direction of the outlet are attached, and at a position corresponding to the paddles (11) at the bottom or bottom of the carbonization chamber (1), An air supply port (13) for feeding air to the ignited raw material (A) and causing incomplete combustion is provided.

[0007] Alternatively, in the above, an air supply port (13) is provided at a position corresponding to the paddles (11) over the entire bottom of the carbonization chamber (1), so that the air supply port (13) is substantially uniform from the bottom of the carbonization chamber (1). It is characterized in that the raw material (A) can be incompletely burned by feeding air.

Further, the above-mentioned carbonization apparatus is provided with a supply device (3) for guiding the raw material (A) to the carbonization chamber (1).
In (3), a screw shaft for transferring the raw material (A) by a screw is provided, and the screw shaft is characterized in that only one end is supported.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to preferred embodiments. [Embodiment] FIG. 1 is a front view of a carbonizing apparatus according to this embodiment.
FIG. 2 is a plan view of the same carbonizing device. In the figure, (1) is a carbonization chamber for performing ignition and carbonization, and (2) is a cyclone for removing dust from exhaust gas. Further, (3) is a supply device for supplying raw rice husks to the carbonization chamber (1).

[0010] The raw materials supplied to the supply device (3) are sequentially guided into the carbonization chamber (1). Rice husk is carbonized inside the supply device (1)
There is a screw shaft for sending out to the side. The screw shaft is supported only at one end opposite to the connection with the carbonization chamber.

[0011] When foreign matter such as stone or wood enters the supply device (3), the foreign matter is clogged between the screw shaft and the inner wall of the supply device, and the rotation of the screw shaft is hindered. This is to prevent (stacking).
That is, since the screw shaft can be tilted about the support portion because of the single support, the distance between the screw shaft and the inner wall can be changed, and if the screw shaft and the inner wall of the supply device are temporarily separated from each other, , The screw shaft can continue to rotate by slightly tilting.

In this embodiment, the above-described supply device is used.
Although (3) was established, this is not always necessary,
The operator may sequentially supply the raw materials to the carbonization chamber (1).

When relatively dry agricultural and forestry waste such as chaff is used as a raw material, a separate drying chamber for drying before ignition is not required. Therefore, the rice hulls sent from the supply device (3) are directly guided to the carbonization chamber (1).

FIG. 3 is a conceptual diagram of the structure of the carbonization chamber (1).
The raw material (A) is supplied from a raw material supply port (16) connected to the supply device (3). The rice hull (A) is ignited in the coking chamber (1). The ignition may be provided in a dedicated ignition device such as a burner.However, when rice husk (A) is used as the raw material, the ignition is easy. May ignite directly.

The paddle (11) is a paddle twisted like a blade attached to the shaft (12). The paddle agitates the rice hull (A) by rotating the shaft (12) and sends it out toward the carbide outlet (14). You are. The shaft (12) was of a water-cooled type in which a water stream flows inside as a pipe for heat resistance.

An air supply port (13) is provided in a lower portion or a bottom portion of the carbonization chamber (1), corresponding to a portion between the paddles (11). The minimum required air is supplied from the air supply port (13) to incompletely burn the chaff (A). Air supply port (13)
The paddle (11) was provided at a location corresponding to each other, and the rice husk at the location where the paddle (11) hit with the rotation of the shaft (12)
(A) is excavated so that it can be pushed away by the paddle (11), whereas the rice hull (A) tends to accumulate between the paddles (11), and the thickness of the accumulated rice hull (A) increases. .

[0017] That is, by blowing air to a portion where the thickness of the accumulated rice hull (A) becomes large, the accumulated rice hull (A) can be efficiently and incompletely burned. Also, when air is blown to a place where the thickness of the rice hull (A) where the paddle (11) is located is small, the light rice hull (A) may be blown up from the supplied air, so even in order to prevent it. is there.

In this embodiment, the air supply port is provided at a position corresponding to the space between the paddles (11) over the entire bottom of the carbonization chamber (1).
(13) is provided so that air can be supplied substantially uniformly from the bottom to cause incomplete combustion.

Secondary air is supplied from a secondary air supply port (17) above the carbonization chamber (1), and carbon monoxide gas generated by the incomplete combustion is burned. The heat from the combustion is rice husk (A)
However, since the vicinity of the rice hull (A) is anoxic, the rice hull (A) is carbonized without burning. The carbonized rice husk (A) is carried to the carbide outlet (14) by a paddle and discharged out of the carbonization device (1). The exhaust gas is discharged from the gas discharge port (15) through the cyclone (2). Since the raw material such as rice hulls is directly heated in this way, it can be efficiently carbonized.

[0020]

As described above, according to the present invention, it is possible to provide a carbonization apparatus having a small and simple structure capable of continuously carbonizing rice hulls and the like.

[Brief description of the drawings]

FIG. 1 is a front view of a carbonizing apparatus according to an embodiment.

FIG. 2 is a plan view of the carbonizing device of the embodiment.

FIG. 3 is a conceptual diagram of an internal structure of a carbonization chamber.

FIG. 4 is a conceptual diagram of a conventional carbonizing device.

[Explanation of symbols]

 (A) Raw material (rice husk) (1) Carbonization chamber (11) Paddle (12) Shaft (13) Air supply port (14) Carbide outlet (16) Raw material supply port (17) Secondary air supply port (2) Cyclone ( 3) Feeding device

Claims (3)

[Claims] A rotatable shaft is disposed in a carbonization chamber for carbonizing a raw material, and a plurality of paddles for stirring the raw material in the carbonization chamber and transferring the raw material in an outlet direction are mounted on the shaft. An air supply port for feeding air to the ignited raw material and incompletely burning the ignited raw material at a position corresponding to a paddle between a lower portion and a bottom portion of the carbonization chamber. 2. An air supply port is provided at a position corresponding to each paddle over the entire bottom of the carbonization chamber, and air can be substantially uniformly fed from the bottom of the carbonization chamber to incompletely burn the raw material. The carbonization device according to claim 1, wherein the carbonization device is provided. 3. A supply device for guiding a raw material to a carbonization chamber is provided, and a screw shaft for transferring the raw material by a screw is provided in the supply device, and the screw shaft has only one end supported. 2. The method according to claim 1, wherein
Or the carbonization device according to claim 2.