JP2870627B2 - Swing type 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 an improvement in a carbonization furnace for continuously producing carbides such as charcoal.

[0002]

2. Description of the Related Art Although a batch type of charcoal filter for producing charcoal and other charcoal is often used, it is difficult to cope with a demand for continuously producing large quantities and being pollution-free.

In order to cope with the above, there is a mechanical furnace, but an external combustion type is a palindrome and is not suitable for mass production. Therefore, an internal combustion type is used. Rotary kiln types are known.

[0004]

However, in the fluidized bed system with stirring blades, the carbonization temperature can be arbitrarily selected, mass production is possible, and the carbonization yield is high, but the particle size is constant because the raw material is fluidized. It is necessary to be within the range.

Further, since a stirring blade is provided in the layer, it is not preferable to operate at a very high temperature because of its durability.

[0006] The rotary kiln type is not affected by the particle size of the raw material, but the contact between the raw material and air is poor, and it is extremely difficult to control the carbonization temperature. There are things that let me.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an oscillating carbonization furnace which is simple in structure and has good durability, in which the carbonization temperature can be easily controlled without being influenced by the particle size so as to solve the above-mentioned problems. .

[0008]

According to the present invention, there is provided a carbonization furnace main body which is formed in a conical shape and is swingably supported so that the conical axis is horizontal, and carbonization generated in the carbonization furnace main body. It is composed of a carbonization gas combustion furnace for burning gas, and a product carry-out port, and the carbonization furnace main body is provided with a raw material input port at a small diameter side end and an ignition port and a carbonization air blowing port at a lower portion thereof,
A plurality of baffles are provided on the inner wall in a direction perpendicular to the conical axis.

[0009]

In the oscillating type carbonizing furnace constructed as described above, the raw material that has entered the carbonizing furnace main body from the raw material charging port is ignited by a pilot flame at the ignition port, and the endothermic reaction up to 250 ° C. is caused by the partial combustion heat. In the subsequent exothermic reaction, if a small amount of air is blown from the air inlet to raise the temperature to a predetermined temperature, carbides are formed.

In the meantime, the raw material proceeds in the inclined carbonization furnace main body in the direction of the outlet by the swing of the main body, and the quality of the raw material depends on the internal baffle, the swing angle and the swing cycle, and the material residence time in the furnace. It is secured by control.

[0011] The wood gas and the like generated at that time are completely burned in a carbonization gas combustion furnace and rendered harmless and discharged.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a carbonization furnace body 7 formed in a conical shape of a metal plate and lined with a heat insulating material (for example, silica board) 7c and a refractory 7d has a small diameter portion 7
a is rotatably supported by a bearing 11 and a large diameter portion 7b by a bearing 12, and an end material of the small diameter portion 7a is provided with an arbitrary known material input feeder 6.

An ignition port 2 is provided below the small diameter portion 7a of the main body 7, and a plurality of air inlets 1a, b, 1c for carbonization are provided from the ignition port toward the large diameter portion. It is connected to an air circuit 13 formed by a flexible tube.

The small diameter portion 7a has a sprocket 14
Are connected to a sprocket 16 of the reversible motor 15 by a chain 17, and a pilot hole 5 is provided at an upper portion.

The large-diameter portion 7b is rotatably and airtightly connected to the carbonization gas combustion furnace 4, and at the lower end of the carbonization gas combustion furnace 4, an outlet 18 for taking out carbide as a product is provided. 18 is a known conveyor 8 for carrying out products.
The conveyor 8 is cooled by a water jacket 8a and a water pool 8b.

Reference numeral 9 denotes a burner for igniting the carbonization gas combustion furnace 4, and reference numeral 10 denotes an ejector air port for supplying air to the combustion furnace 4 and improving the discharge of combustion gas.

Therefore, the raw material is supplied from the raw material input feeder 6, and air is supplied from the ignition port 2 to which a pilot flame has been previously supplied from the pilot flame input port 5 to ignite the raw material and air is supplied from the air blowing port 1. The temperature is increased by the endothermic reaction after the supply, and when the temperature exceeds 250 ° C., an exothermic reaction occurs, so the amount of air is reduced. 2 and 3, the carbonization furnace body 7 is oscillated to mix and stir the raw material, and the baffle 3 is oscillated with an oscillating cycle (30 to 120 sec.) And an oscillating angle (for example, up to 60 degrees). Good quality is maintained by controlling the relationship with α to adjust the residence time of the raw material.

The product is carried out by a carry-out conveyor 8, and wood gas and the like, which are combustion gases, are completely burned in the carbonization gas combustion furnace 4 to be rendered harmless and discharged.

[0020]

According to the present invention, as described above, high-quality carbide can be continuously produced in large quantities regardless of the particle size of the raw material, and gas such as wood gas is made harmless and discharged. The heat of combustion can be used for drying a waste heat boiler or a material to be carbonized, and contributes to energy saving.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an oscillating carbonization furnace showing one embodiment of the present invention.

FIG. 2 is a diagram showing an AA cross section of FIG. 1;

FIG. 3 is a diagram showing a BB cross section of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Air inlet for carbonization 2 ... Ignition port 3 ... Baffle 4 ... Carbonization gas combustion furnace 5 ... Seed inlet 6 ... Raw material input feeder 7 ... Carbonization furnace main body 8 ... Carry-out conveyor 9 ... Burner 10 ... Air port for ejector 11 , 12 ... bearing 13 ... pneumatic circuit 14,16 ... sprocket

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) C10B 53/02 C10B 7/10 C10B 49/06

Claims (1)

(57) [Claims] 1. A carbonization furnace main body formed in a conical shape and swingably supported so that its conical axis is horizontal, a carbonization gas combustion furnace for burning a carbonization gas generated in the carbonization furnace main body, The carbonization furnace main body is provided with a raw material inlet at the small diameter side end thereof, an ignition port and an air inlet for carbonization at the lower part thereof, and an inner wall of the carbonization furnace main body in a direction perpendicular to a conical axis. An oscillating carbonization furnace comprising a plurality of baffles.