JP2002020756A - Carbonizing furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonizing furnace harmless to environment and scarcely generating noise and malodor. SOLUTION: This carbonizing furnace is equipped with a potential transformer 2 having a primary coil 21 connected to an electric source 23 and a secondary coil 22 having winding number smaller than that of the primary coil 21, hollow tubes 3a to 3d having electroconductivity and connected to the secondary coil 22 of the transformer 2, a charging part 4 for charging waste into the hollow tube 3a, a screw conveyer 6 and a motor for transferring the waste charged into the hollow tubes 3a to 3d in the hollow tubes and a discharge part 5 for discharging the waste transferred thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbonization furnace for heating and carbonizing garbage and garbage, medical waste such as syringes and gauze, or medical waste such as syringes and gauze.

[0002]

2. Description of the Related Art Conventionally, when heating and carbonizing waste such as organic waste, a high-temperature atmosphere is created by burning gas and oil, and the waste is heated under this high-temperature atmosphere. This was carbonized.

[0003]

However, when the waste is heated and incinerated by burning the gas or oil as described above, the exhaust gas is harmful due to the combustion of the gas or oil. And noise and foul odors are generated, causing pollution of the surrounding environment. In particular, at present, when environmental protection is called for, there is a strong demand for the development of a carbonization furnace that does not cause such environmental pollution.

[0004] The present invention has been made in view of such problems of the prior art, and has as its object to provide a carbonization furnace which is harmless to the environment and hardly generates noise and odor.

[0005]

SUMMARY OF THE INVENTION In order to solve the problems in the prior art, the present invention according to claim 1 has a primary coil connected to a power supply and a number of turns based on the number of turns of the primary coil. A transformer having a secondary coil having a small number of coils, a hollow tube having conductivity connected to the secondary coil of the transformer, and a waste charging means for charging waste into the hollow tube. Transfer means for transferring the waste put into the hollow tube in the hollow tube, and waste discharge means for discharging the waste transferred by the transfer means, a carbonization furnace comprising: is there. Thus, the waste can be carbonized only by electricity without using gas or oil.

According to a second aspect of the present invention, a plurality of the hollow pipes are vertically arranged side by side, and a communication pipe connecting one end of the hollow pipe adjacent to each other is provided. 2. The carbonization furnace according to 1. Thereby, a series of steps can be realized by a plurality of hollow tubes arranged in parallel one above the other, and it becomes possible to divide all the steps and to constitute a plurality of relatively short hollow tubes.

Furthermore, the present invention according to claim 3 is the carbonization furnace according to claim 1 or 2, wherein the hollow tube is sealed. Thereby, the inside of the hollow tube is shut off from the outside, and oxygen is not supplied, so that the waste in the hollow tube can be so-called steamed.

According to a fourth aspect of the present invention, there is provided the carbonization furnace according to the first or second aspect, wherein the transfer means comprises a screw conveyor and a motor. As a result, the waste put in the hollow tube is stirred and
It is possible to efficiently carbonize while pulverizing.

Further, the present invention according to claim 5 is provided with a gas processing apparatus for heat-treating a gas generated in the hollow tube at a temperature higher than a processing temperature in the hollow tube. Or a carbonization furnace described in 2. This makes it possible to detoxify the gas generated in the hollow tube and then discharge it to the outside.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a carbonization furnace according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a view schematically showing a carbonization furnace 1 according to the present embodiment. As shown in the figure, a carbonization furnace 1 of the present invention basically includes a transformer 2, hollow tubes 3a to 3d, an inlet 4, an outlet 5, a screw conveyor 6 as a transfer means, and a motor 7. Is done. In the following description, the right and left in FIG. 1 are referred to as “right” and “left”, respectively.

[0011] The transformer 2 is provided around a core (iron core).
The primary coil 21 and the secondary coil 22 are wound respectively, and the ratio of the number of turns of the primary coil 21 to the number of turns of the secondary coil 22 is 20: 1.

A power source 23 is connected to the primary coil 21, and a commercial AC voltage of 440 V is supplied to the primary side. As described above, the number of turns of the primary coil 21 and 2
The ratio of the number of turns of the secondary coil 22 is 20: 1, and the secondary coil 22 is supplied with a current 20 times the current supplied to the primary coil 21. Note that this secondary coil 22
Is cooled by a cooling system (not shown) using cooling water because it is expected that the temperature of the winding will become high.

As shown in FIG. 1, in this embodiment, four horizontally arranged hollow tubes 3a to 3d are vertically arranged. These hollow tubes 3a to 3d are formed of a conductive material, and in the present embodiment, a steel pipe is used. In addition, it is not limited to this steel pipe, but may be any as long as it has conductivity. For example, stainless steel can be used. In the following description, the above 4
The three hollow tubes 3a to 3d are referred to as a first hollow tube, a second hollow tube, a third hollow tube, and a fourth hollow tube in order from the top.

One end of each of the hollow tubes 3a to 3d is connected to one end of an adjacent hollow tube by conductive communication tubes 8a to 8c. That is, the right end of the first hollow tube 3a and the right end of the second hollow tube 3b are connected to the communication tube 8a, and the left end of the second hollow tube 3b and the left end of the third hollow tube 3c are connected to the communication tube 8b. Accordingly, the right end of the third hollow tube 3c and the right end of the fourth hollow tube 3d are connected to each other by the communication tube 8c.
The communication tubes 8a to 8c are also formed of a material having conductivity similarly to the hollow tubes 3a to 3d. In the present embodiment, a steel having the same inner diameter and outer diameter as the hollow tubes 3a to 3d is used. Pipes are used.

Here, on the upper surface at the left end of the first hollow tube 3a, there is provided an input section 4 as a waste input means for inputting waste into the first hollow tube 3a. A rotating lid 41 is attached to an upper portion of the input unit 4, and a shutter 42 that can be pulled out left and right is provided at a lower portion of the input unit 4. Also, on the lower surface at the left end of the fourth hollow tube 3d,
A discharge unit 5 is provided as waste discharge means for discharging waste. A shutter 51 that can be pulled out to the left and right is also provided at a lower portion of the discharge unit 5. The shutter 42 of the input section 4 and the shutter 51 of the discharge section 5 are for keeping the inside of the hollow tube in a closed state.

A gas control valve 9 is provided on the right upper surface of the first hollow tube 3a, and a gas processing device 10 for heat-treating a gas generated in the hollow tube is connected to the gas control valve 9. Have been. Details of the gas processing device 10 will be described later.

A screw conveyor 6 is inserted into each of the hollow tubes 3a to 3d, and one end (right end) of the screw conveyor 6 is connected to a motor 7.
The screw conveyor 6 is driven by the rotation of the motor 7, and the screw conveyor 6 sequentially transfers the wastes input from the input section 4. The motor 7 is installed outside the hollow tube.
A heat-resistant shaft seal 71 is provided between the screw conveyor 6 and the shaft 3d, thereby sealing the shaft (motor shaft) of the screw conveyor 6. In this embodiment, a screw conveyor and a motor are used as the transfer means. However, the present invention is not limited to this, and the waste may be transferred using another method.

As shown in FIG. 1, the left end of the first hollow tube 3a and the left end of the fourth hollow tube 3d are connected to the secondary coil 22 of the transformer 2, respectively. Therefore,
The voltage (22V) generated in the secondary coil 22 is applied to the hollow tubes 3a to 3d and the communication tubes 8a to 8c.
When a voltage is applied to the hollow tubes 3a to 3d and the communication tubes 8a to 8c, they generate heat due to the electric resistance of the hollow tubes 3a to 3d and the communication tubes 8a to 8c, and the inside of the hollow tubes 3a to 3d is discarded. Things can be heated. As will be described later, the internal temperature of the hollow tubes 3a to 3d becomes 400 to 500 ° C., and the waste such as leftovers and garbage thrown into the hollow tubes 3a to 3d can be carbonized.

Here, the gas processing apparatus 10 described above will be described. FIG. 2 is a block diagram schematically showing the configuration of the gas processing apparatus according to FIG. Gas is generated when the waste in the hollow tube is carbonized, and the gas generated by the carbonization process is adjusted by the gas control valve 9 and sent to the gas processing device 10.

As shown in FIG. 2, the gas processing device 10
Secondary combustion furnace 11, blowers 12, 13 and quenching device 1
4 and a filter 15. In the secondary combustion furnace 11, the gas in the hollow tube is heated to a temperature higher than the processing temperature (400 ° C to 500 ° C) in the hollow tube (for example, 400 ° C to 500 ° C).
(850 ° C. to 1300 ° C.).
To the quenching device 14. In the quenching device 14, the gas that has been heat-treated in the secondary combustion furnace 11 is quenched using cooling water. Then, the cooled gas passes through the filter 15 and is discharged outside by the blower 13.

As described above, the generated gas in the hollow tube is heat-treated at a temperature higher than the processing temperature in the hollow tube by using the gas processing device 10, so that the gas can be rendered harmless and then discharged.

Hereinafter, a process of carbonizing waste using the carbonizing furnace 1 according to the present invention will be described. First, input section 4
The upper rotating lid 41 is opened, and waste such as garbage, garbage, medical waste, or the like is thrown into the throwing portion 4. In addition,
At the stage of the input of the waste, the shutter 42 below the input unit 4 is closed.

When the input of the waste is completed, the input section 4
The upper rotating lid 41 is closed, and the shutter 4 at the lower part of the input unit 4 is closed.
Open 2. Thereby, the waste put in the charging section 4 falls into the first hollow pipe 3a. After confirming that the waste has fallen inside the first hollow tube 3a, the shutter 42 below the input unit 4 is closed, and the inside of the hollow tube is sealed. During the carbonization process described below, the shutter 51 of the discharge unit 5 is closed, and the inside of the hollow tubes 3a to 3d is kept in a sealed state.

Then, the power supply 23 operates to
When a voltage is applied to the secondary coil 21, a high current is generated in the secondary coil 22 of the transformer 2, and this high current is supplied to the hollow tube. As a result, the hollow tube generates heat, and the waste put into the hollow tube is heated at a temperature of 400 ° C to 500 ° C. Since the heating is performed in a closed state, that is, in a state in which oxygen is not supplied from the outside, the waste is heated in a so-called steamed state and is efficiently carbonized.

After the waste is charged, the motor 7 is rotated to drive the screw conveyor 6 in the hollow tubes 3a to 3d. By driving the screw conveyor 6, the waste put into the first hollow tube 3a is transferred to the right while being stirred and crushed. Since the waste is heated while being stirred and pulverized, a uniform and efficient carbonization treatment can be performed.

When the waste is transferred to the right end of the first hollow tube 3a by the screw conveyor 6, the waste falls in the communication tube 8a and is put into the second hollow tube 3b. The screw conveyor 6 in the second hollow tube 3b
Is rotated in the opposite direction to the screw conveyor 6 in the first hollow tube 3a, and the waste is transferred to the left while being heated.

When the waste is moved to the left end of the second hollow tube 3b, the waste falls in the communication tube 8b and is thrown into the third hollow tube 3c as described above. The waste is transported rightward in the third hollow tube 3c, and is injected into the fourth hollow tube 3d via the communication tube 8c at the right end. In the fourth hollow tube 3d, the waste is transported to the left, falls into a discharge portion 5 provided at the left end thereof, and carbonized waste is accumulated in the discharge portion 5. Then, if necessary, the shutter 51 of the discharged material is opened, and the carbonized waste can be taken out. The removed carbonized waste is, for example,
The secondary incineration may be performed by an arc furnace or the like.

The treatment in each hollow tube described above is about 5
Minutes, and the whole process is completed in about 20 minutes. In this way, waste such as garbage, garbage, and medical waste can be efficiently carbonized only by electricity.
Therefore, no harmful gas is generated and the surrounding environment is not polluted. The secondary combustion furnace 11 of the gas processing apparatus 10 may have the same configuration as the above, that is, a configuration in which a hollow tube, a transformer, and the like are provided, and may be heated at a high temperature by applying a higher voltage.

[0029]

As described above, the present invention relates to a transformer having a primary coil connected to a power supply and a secondary coil having a smaller number of turns than the primary coil, and a secondary coil of the transformer. Connected, hollow tube having conductivity, waste input means for inputting waste into the hollow tube, transfer means for transferring the waste input into the hollow tube in the hollow tube A waste discharging means for discharging the waste transferred by the transferring means, the waste can be treated only by electricity without using gas or oil, and harmful gas is generated. No noise and almost no noise.

In addition, a plurality of the hollow tubes are vertically arranged side by side, and a communicating tube for connecting one end of the adjacent hollow tubes is provided. Can be realized, and the whole process can be divided into a plurality of relatively short hollow tubes, so that it can be installed even in a narrow space.

Further, by closing the hollow tube,
Since the inside of the hollow tube is shut off from the outside and oxygen is not supplied, the waste can be efficiently carbonized and does not emit a bad odor to the outside.

Further, since the transfer means is constituted by a screw conveyor and a motor, the waste put in the hollow tube can be carbonized while being stirred and pulverized, so that a uniform and efficient carbonization treatment is performed. be able to.

Further, by providing a gas processing device for heat-treating the gas generated in the hollow tube at a temperature higher than the processing temperature in the hollow tube, the gas generated in the carbonization process in the hollow tube is rendered harmless. Can be discharged.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a carbonization furnace according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically showing a configuration of the gas processing apparatus according to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carbonization furnace 2 Transformer 21 Primary coil 22 Secondary coil 23 Power supply 3a-3d Hollow tube 4 Input part (waste disposal means) 41 Rotating lid 42 Shutter 5 Discharge part (waste discharge means) 51 Shutter 6 Screw conveyor Reference Signs List 7 motor 8a to 8c communication pipe 9 gas control valve 10 gas processing device 11 secondary combustion furnace 12, 13 blower 14 quenching device 15 filter

Claims (5)

[Claims] 1. A transformer having a primary coil connected to a power supply and a secondary coil having a smaller number of turns than the primary coil, and a transformer connected to a secondary coil of the transformer, wherein A hollow pipe having: a waste input means for inputting waste into the hollow pipe; a transfer means transferring the waste input into the hollow pipe in the hollow pipe; and a transfer means transferred by the transfer means. What is claimed is: 1. A carbonization furnace comprising: a waste discharging means for discharging waste. 2. The carbonization furnace according to claim 1, wherein a plurality of the hollow pipes are vertically arranged side by side and a communication pipe connecting one end of the adjacent hollow pipes is provided. 3. The carbonization furnace according to claim 1, wherein the hollow tube is sealed. 4. The carbonization furnace according to claim 1, wherein said transfer means comprises a screw conveyor and a motor. 5. The carbonization furnace according to claim 1, further comprising a gas processing device that heat-treats a gas generated in the hollow tube at a temperature higher than a processing temperature in the hollow tube.