JPH11302660A - Carbonization apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonization apparatus wherewith the combustion efficiency can be improved and the exhaust gas temp. can be decreased. SOLUTION: This apparatus comprises a carbonization chamber 3 equipped with a charge hole for waste 9 and a taking-out hole 12 for a treating product; a primary combustion chamber 5 surrounding the carbonization chamber 3 and equipped with a heating apparatus 4 for heating the carbonization chamber 3; a secondary combustion chamber 6 connected to the carbonization chamber 3 and equipped with a combustion apparatus 10 for combusting a gas generated in the carbonization chamber 3; an exhaust gas passage 8 for discharging an exhaust gas from the secondary combustion chamber 6; the first flue 13 connecting the carbonization chamber 3 to the secondary combustion chamber 6 for leading the gas generated in the carbonization chamber 3 to the vicinity of the combustion apparatus 10; and the second flue 14 for leading the combustion gas of the primary combustion chamber 5 to the outside. The second flue 14 is installed at a position independent of the first flue 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a carbonization apparatus for carbonizing combustible waste such as wood, paper, synthetic resin, household garbage and the like.

[0002]

2. Description of the Related Art A conventional carbonization apparatus will be described with reference to FIGS. FIG. 5 is a longitudinal sectional view of a conventional carbonizing apparatus as viewed from the front, and FIG. 6 is a longitudinal sectional view as viewed from the side. In the conventional carbonization apparatus 101, the waste 9 is introduced from the input port 105 of the carbonization chamber 103, and the primary combustion chamber 10
4, the carbonization chamber 103 is heated by the primary burner 107,
The unburned gas generated from the waste 9 by the heating passes from the carbonization chamber 103 through the first flue 108 to the secondary combustion chamber 10.
9, after being burned by the secondary burner 111,
The exhaust gas passes through the exhaust passage 113 and is released to the atmosphere.

Here, the primary combustion chamber 104 is connected to the second flue 11
5 communicates with the secondary combustion chamber 109 and the second flue 11
5 is provided so as to surround the first flue 108.
That is, the first flue 108 and the second flue 115 are
It has a double pipe structure in which the flue 108 is an inner pipe and the second flue 115 is an outer pipe, and the combustion gas in the primary combustion chamber 104 and the unburned gas generated in the carbonization chamber 103 are secondary burners. It is led out in the vicinity of the 111 flame.

[0004]

However, in the above-described conventional technique, the unburned gas from the coking chamber 103 to be burned by the secondary burner 111 is diluted by the combustion gas in the primary combustion chamber 104. Therefore, there is a problem that the unburned gas cannot be efficiently burned.

An object of the present invention is to solve the above-mentioned problem, that is, to provide a carbonization treatment apparatus capable of efficiently burning unburned gas from a carbonization chamber in a secondary combustion chamber.

[0006]

In order to achieve the above object, the carbonization apparatus of the present invention has the following configuration. That is, the carbonization apparatus of the present invention has the
And a primary combustion chamber 5 surrounding the carbonization chamber 3 and having a heating device 4 for heating the carbonization chamber 3, and a communication chamber with the carbonization chamber 3. A secondary combustion chamber 6 provided with a combustion device 10 for burning gas generated from the carbonization chamber 3, an exhaust passage 8 for discharging exhaust gas from the secondary combustion chamber 6, the carbonization chamber 3, and the secondary combustion To the combustion chamber 1 by connecting the gas generated from the carbonization chamber 3 to the combustion apparatus 1.
0, and a second flue 14 for taking out the combustion gas of the primary combustion chamber 5. The second flue 14 comprises the first flue 14. It is provided at a position independent of the flue 13.

Here, in the carbonization apparatus of the present invention,
The second flue 14 is preferably formed by connecting the upper part of the primary combustion chamber 5 and the secondary combustion chamber 6 or a combustion gas flow path downstream thereof.

In the carbonization apparatus of the present invention, the waste 9 charged into the carbonization chamber 3 is heated by the heating device 4 in the primary combustion chamber 5 to generate unburned gas from the waste 9, and the generated gas is converted into the first gas. It is introduced into the vicinity of the combustion device 10 in the secondary combustion chamber 6 through the flue 13 and is burned by the combustion device 10. The combustion gas in the secondary combustion chamber 6 is released from the exhaust passage 8 into the atmosphere. On the other hand, the combustion gas in the primary combustion chamber 5 is
Through the secondary combustion chamber 6 or a combustion gas flow path downstream thereof, and together with the combustion gas in the secondary combustion chamber 6, the exhaust passage section 8
Released from Here, the combustion gas guided through the second flue 14 is independent of the unburned gas guided through the first flue 13 (that is, the combustion gas in the primary combustion chamber 5 is (Introduced at a position remote from the apparatus 10), so that dilution of the unburned gas to be burned in the combustion apparatus 10 can be avoided, and the combustion efficiency can be improved. In addition,
The heating device (4) in the present invention usually means a heating device such as a burner (primary burner) or an electric heater, and the combustion device (10) in the present invention usually means a burner (secondary burner). ), But may be other heating means or combustion means.

Further, since the combustion gas in the primary combustion chamber 5 is led to a position distant from the combustion device 10, it is not heated by the combustion device 10, so that the exhaust gas temperature can be reduced as compared with the conventional case.

Further, in the carbonization apparatus of the present invention,
It is preferable that the primary combustion chamber 5 be provided with a cooling fan 16.

Then, in the cooling step after the carbonization step, if the combustion device 10 and the heating device 4 are stopped and the cooling fan 16 is operated, the carbonization chamber 3 can be effectively cooled in a short time. Can be. Further, the wind of the cooling fan 16 is not supplied to the vicinity of the combustion device 10,
From the combustion gas passage remote from the
It is possible to prevent the temperature of the zero flame from being lowered by the influence of the wind, thereby improving the combustion efficiency.

Further, since the wind from the cooling fan 16 is not affected by heat in the secondary combustion chamber 6 or heated by the combustion device 10, the temperature of the exhaust gas discharged from the exhaust passage portion 8 into the atmosphere is lower than in the prior art. It can be kept low.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described in detail with reference to FIG.

FIG. 1 is a longitudinal sectional view of a carbonizing apparatus according to a first embodiment of the present invention as viewed from the front, and FIG. 2 is a longitudinal sectional view as viewed from the side. The carbonization apparatus 1 includes a casing 2, in which a carbonization chamber 3 into which waste 9 is charged, and a primary burner (heating device) 4 for heating the carbonization chamber 3.
Are disposed, a secondary combustion chamber 6 in which a secondary burner (combustion device) 10 for burning gas generated in the carbonization chamber 3 is disposed, and an exhaust passage 8 for discharging exhaust gas. The primary combustion chamber 5 and the exhaust passage section 8 are connected by a second flue 14. The carbonization chamber 3 and the secondary combustion chamber 6 are connected by a first flue 13.

An input port 11 is provided in the upper part of the carbonization chamber 3, from which waste 9 to be treated is input.
A processed product (carbide) is taken out from a take-out port 12 provided below. The carbonization chamber 3 is communicated with the secondary combustion chamber 6 by a first flue 13 connected to the upper part thereof. In the carbonization chamber 3, the waste 9 is heated (so-called steamed) in an oxygen-free state, and moisture and unburned gas generated from the waste 9 are introduced into the secondary combustion chamber 6.

The primary combustion chamber 5 surrounds the carbonization chamber 3,
On one side thereof, a primary burner 4 for heating the carbonization chamber 3 is arranged. A lower end of a second flue 14 provided at a position different from the first flue 13 is connected to an upper part of the primary combustion chamber 5, and an upper end of the second flue 14 is connected to the exhaust passage 8. I have. Thereby, the combustion gas generated in the primary combustion chamber 5 is introduced into the exhaust passage 8.

Each of the first and second flue 13 and 14 is a duct having a circular cross section, but may have a rectangular or polygonal cross section.

The primary combustion chamber 5 has a cooling fan 16
Is provided. When the carbonization step is completed, the operation of the primary burner 4 is stopped, and the secondary burner 10 and the cooling fan 16 are stopped.
Is operated, the carbonization chamber 3 can be efficiently cooled in a short time.

In the secondary combustion chamber 6, a secondary burner 10 is provided on a side wall of the secondary combustion chamber 6, and burns unburned gas introduced from the carbonization chamber 3 into the secondary combustion chamber 6. Smokeless and odorless.

A first flue 13 is connected in the vicinity of the secondary burner 10 and in the vicinity of the lower part of the secondary combustion chamber 6 (at a location within about 1/5 of the longitudinal length of the secondary combustion chamber 6). Only the unburned gas generated in the carbonization chamber 3 is supplied to the vicinity of the secondary burner 10, and the combustion gas from the primary combustion chamber 5 is supplied to the secondary burner 1.
Since it is not introduced near zero, a decrease in combustion efficiency due to dilution of the unburned gas can be avoided. Further, it is possible to avoid lowering the temperature of the flame of the secondary burner 10 in the cooling step, thereby lowering the combustion efficiency, or heating the cooling air.

The exhaust passage section 8 is provided so as to be connected to the upper part of the secondary combustion chamber 6 and discharges exhaust gas burned in the secondary combustion chamber 6. As described above, the second flue 14 is connected to the exhaust passage section 8 so that the combustion gas generated in the secondary combustion chamber 6 is combined with the combustion gas in the primary combustion chamber 5 and discharged. ing. In this exhaust passage section 8, a catalyst 7 (metal oxide) for deodorization may be arranged above the opening 14a of the second flue 14, and in this case, the exhaust gas Released after contact with. In addition, a heat exchanger (not shown) is disposed in the exhaust passage section 8, and the exhaust gas (primary combustion gas and secondary combustion gas) passing through the exhaust passage section 8 is cooled by heat exchange and then released into the atmosphere. It may be a configuration.

Next, the operation of this embodiment will be described.
First, waste 9 to be treated is introduced from the charging port 11 into the carbonization chamber 3.
, The primary burner 4 is operated to heat the carbonization chamber 3, and the waste 9 is so-called steamed in an oxygen-free state.
Moisture and unburned gas are generated from the waste 9. Since the generated unburned gas passes through the first flue 13 and is introduced into the vicinity of the flame of the secondary burner 10 in the secondary combustion chamber 6, it can be directly and efficiently burned. The burned secondary combustion gas is introduced from the secondary combustion chamber 6 into the exhaust passage section 8 and discharged to the atmosphere.

The combustion gas generated in the primary combustion chamber 5
Position independent of the flue (position away from the first flue 13)
The air is introduced into the exhaust passage section 8 through the second flue 14 provided at the bottom. Therefore, the combustion gas from the primary combustion chamber 5 does not dilute the unburned gas, and the reduction of the combustion efficiency of the unburned gas by the secondary burner 10 is prevented.

The combustion gas from the primary combustion chamber 5 from the second flue 14 and the exhaust gas from the secondary combustion chamber 6 flow into the exhaust passage 8, and a mixture of these gases passes through the exhaust passage 8. Released into the atmosphere.

After the carbonization step is completed, cooling is performed (cooling step). In this cooling step, the primary burner 4 is stopped, and the secondary burner 10 and the cooling fan 16 are operated. Since the cool air of the cooling fan 16 is discharged from the exhaust passage 8 without being supplied to the flame of the secondary burner 10, the secondary burner 10
It is possible to prevent a decrease in combustion efficiency due to a decrease in the temperature of the plume and to reduce the exhaust gas temperature.

After the carbonization chamber 3 is sufficiently cooled, the carbonization chamber 3
The carbonized material is taken out from the outlet 12.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment described below, the same parts as those in the above-described first embodiment are denoted by the same reference numerals, and detailed description of those parts is omitted. The points will be described.

In the second embodiment shown in FIG. 3 and FIG.
The flue 14 extends vertically from the upper part of the primary combustion chamber 5 to the vicinity of the base end of the exhaust passage 8 through the interior of the secondary combustion chamber 6. In the second embodiment, the same effects as in the first embodiment can be obtained.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention. For example, the position of the combustion chamber flue 14 may be any position independent of the first flue 13, and the end thereof is not limited to the exhaust passage portion or the vicinity of the base end thereof, but may be another position.

[0030]

According to the carbonization apparatus of the present invention, the unburned gas generated in the carbonization chamber is not diluted by the combustion gas from the primary combustion chamber, so that the combustion efficiency can be improved as compared with the prior art. Further, since the combustion gas from the primary combustion chamber is not heated by the secondary burner, the exhaust gas temperature can be reduced.

Further, if a cooling fan is provided in the primary combustion chamber, in the cooling step, the wind of the cooling fan is led out to the combustion gas flow path remote from the secondary burner. Accordingly, the temperature can be prevented from lowering, and the combustion efficiency can be further improved. Further, the exhaust temperature can be further reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a structure of a carbonization apparatus according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the carbonization apparatus shown in FIG. 1 as viewed from the other side.

FIG. 3 is a longitudinal sectional view showing a structure of a carbonization apparatus according to a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of the carbonizing apparatus shown in FIG. 3 as viewed from the other side.

FIG. 5 is a vertical sectional view of a conventional carbonization apparatus.

FIG. 6 is a longitudinal sectional view of the conventional carbonizing apparatus shown in FIG. 5 as viewed from the other side.

[Explanation of symbols]

1: Carbonization equipment 2: Casing 3: Carbonization chamber 4: Primary burner (heating device) 5: Primary combustion chamber 6: Secondary combustion chamber 7: Catalyst 8: Exhaust passage 9: Waste 10: Secondary burner (combustion) Device) 11: Inlet 12: Outlet 13: First flue 14: Second flue 14a: Opening 16: Cooling fan 101: Carbonization treatment device 103: Carbonization chamber 104: Secondary combustion chamber 105: Input port 107: Primary burner 108: First flue 109: Secondary combustion chamber 111: Secondary burner 113: Exhaust passage section 115: Second flue 117: Cooling fan

Claims (3)

[Claims] A primary combustion chamber surrounding the carbonization chamber and having a heating device for heating the carbonization chamber; and a communication chamber with the carbonization chamber. A secondary combustion chamber provided with a combustion device for burning gas generated in the carbonization chamber; an exhaust passage for discharging exhaust gas from the secondary combustion chamber; and the carbonization chamber and the secondary combustion chamber. A first flue that connects and introduces gas generated in the carbonization chamber into the vicinity of the combustion device; and a second flue that derives combustion gas from the primary combustion chamber. (2) The carbonization device, wherein the flue is provided at a position independent of the first flue. 2. The carbonization apparatus according to claim 1, wherein the second flue is formed by connecting an upper part of the primary combustion chamber and a secondary combustion chamber or a downstream combustion gas flow path. 3. The carbonization apparatus according to claim 1, wherein the primary combustion chamber includes a cooling fan.