JP2002361297A - Apparatus for carbonizing organic waste continuously - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for continuously carbonizing organic waste smoothly. SOLUTION: This apparatus has a supply part 5 of a subject to be treated arranged in the upper part of a continuously carbonizing part 4 to be kept in a reduction atmosphere, an upper opening plate 11 and a lower opening plate 12 which are arranged in the lower part of the part 5 inside the part 4 and at least any of which is made movable. Passing holes are arranged on the plates 11 and 12, respectively so that the subject to be treated is made to fall through the passing holes when the positions of the holes of the plate 11 are made to coincide with those of the holes of the plate 12 by moving either of the plates 11 and 12. The subject to be treated is carbonized continuously while falling through the passing holes. A cooling jacket 10A is arranged on the plate 11 or the plate 12. When the projected cooling jacket 10A is arranged on the undersurface other than the passing holes of the plate 11, the falling of the subject to be treated is promoted by the interference of the jacket 10A when the plate 11 is moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous carbonization apparatus for mainly organic wastes such as human waste sludge, activated sludge, buckwheat husk, and coffee extract residue generated in wastewater treatment facilities such as food manufacturing industry and livestock waste. It is about.

[0002]

2. Description of the Related Art The scale of sewage treatment facilities, human waste treatment facilities and various kinds of sewage treatment facilities is increasing, and the amount of generated sludge is increasing with the scale. In order to solidify into useful building materials, etc., there is a problem that strength is not obtained due to organic substances as a main component and there is a problem of odor. Attempts have been made to use fertilizer (Japanese Patent Application Laid-Open No. 11-116367), but at present the amount of fertilizer produced is large, resulting in overproduction. Sewage sludge, sludge generated in human waste treatment facilities and various kinds of wastewater treatment facilities can be used effectively, but incineration is one of the options as a waste treatment means. However, at the time of incineration, measures against the generation of dioxin are required, and a heating source is also required.

Accordingly, the present inventors have studied a continuous sludge treatment method and apparatus such as sewage treatment capable of continuously carbonizing sludge generated in a large amount in a sewage treatment facility or the like. No., JP-A-2000-246289, JP-A-20
It is proposed in 00-288595 and the like. Patent No. 3131176 proposes an apparatus capable of performing reduction carbonization of organic waste.
Japanese Patent Application Laid-Open No. 2000-246289 proposes a method of carbonizing a sludge containing organic matter or an organic waste by adding a carbon-containing carbonization assistant to a carbonization target object.
No. 00-288595 proposes a system for implementing the carbonization method.

The above-mentioned JP-A-2000-246289 and JP-A-2000-288595
According to No., in a device that only provides a grid below the continuous carbonization section, the grid is clogged and hinders continuous processing.Therefore, in order to smoothly perform continuous carbonization in a reducing atmosphere, The upper opening plate and the lower opening plate having a plurality of passage holes are provided in the continuous carbonized portion to enable the movement of the steel sheet.
By moving the upper opening plate, the carbide can be dropped when the upper and lower passage holes coincide (the same position when viewed in the vertical direction). In addition, a downward scraping plate is provided on the bottom surface of the upper opening plate.

[0005]

If the moving upper and lower opening plates are provided in the continuous carbonized portion, the carbonized object to be carbonized during carbonization passes when the upper and lower passage holes are at the same position in the vertical direction. However, the passage holes are closed at different positions in the vertical direction, and in any case, the passage of air is hardly allowed, so that the reducing atmosphere can be maintained. The object to be carbonized is carbonized while moving appropriately downward.
However, the object to be carbonized during carbonization is usually 600 to 650 ° C.
As a result, the upper opening plate, the lower opening plate, and the wall surface around the continuous carbonized portion were exposed to the high temperature, and depending on the operating conditions, there was a case where the components were deformed. If both the upper opening plate and the lower opening plate are warped or deformed by heat, the object to be carbonized becomes insufficiently dropped, becomes difficult to move, and cannot be continuously carbonized. In the case where a downward scraping plate is provided on the bottom surface of the upper opening plate, there were cases in which the movement became rather difficult. Therefore, for the purpose of smoothly performing continuous carbonization, the upper opening plate and the lower opening plate have been studied, and a configuration capable of favorably maintaining the scraping function has been studied.

[0006]

SUMMARY OF THE INVENTION As a result of studying the above problems, it is an apparatus for continuously carbonizing an object to be treated with sludge or organic waste containing organic matter, wherein the apparatus is provided above a continuous carbonized portion in a reducing atmosphere. A supply part for the object to be treated is provided, and the object to be treated is lowered by matching the passage holes provided in each of the upper opening plate and the lower opening plate in which at least one provided in the continuous carbonization part below the supply part moves. A continuous carbonization apparatus for organic waste, wherein a cooling jacket is provided on the upper opening plate or the lower opening plate.

A cooling jacket protruding below the upper opening plate leaving a passage hole is provided, and when the upper opening plate moves, the object to be processed is urged to fall by interference (contact) of the cooling jacket. . Further, a continuous carbonization treatment device for organic waste is provided with a cooling jacket also provided around the continuous carbonization section.

[0008] Further, a feedback means for carbide is provided between a carbide outlet at a lower portion of the continuous carbonization section of the continuous carbonization apparatus for organic waste and a supply section for the object to be treated, and the carbide is treated by the object to be treated. Was mixed with the material. JP-A-2000-246289 and JP-A-2000-288595, as well as a means for feeding back the carbide obtained by the treatment as a means for supplying a carbon-containing auxiliary, an object-to-be-processed supply part and a lower part of a continuous carbonization part. And the carbide from the sewage treatment sludge is fed back to the continuous carbonization section to continuously treat the sewage treatment sludge.

Further, the apparatus comprises a mixer for mixing the sewage treatment sludge and the carbide, a granulation unit for facilitating the combustion of the sewage treatment sludge, and a closed continuous carbonization unit having an upper portion for supplying an object to be treated. In the carbonization apparatus, the continuous carbonization section is a continuous carbonization apparatus for organic waste having any of the jackets described above.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a process system diagram of a continuous carbonization apparatus for organic waste according to the present invention. This apparatus has an object supply section 5 at the upper part of the continuous carbonization section 4, and adds a carbon-containing auxiliary to sewage treatment sludge and the like at the upper right of the continuous carbonization section 4 as necessary. The continuous carbonization is performed in the continuous carbonization section 4. The outline of this device is also introduced in the previously proposed Japanese Patent Application Laid-Open No. 2000-246289. A granulating unit 19 and a drying unit 20 for facilitating combustion of sewage sludge and the like for supplying to the treatment object supply unit 5 are provided. Granulation unit 19
Although detailed illustration is omitted, noodle-like sludge extruded from a multi-hole nozzle is cut into particles. In the apparatus of this embodiment, almost all of the carbide obtained in the continuous carbonization section 4 is fed back as a means for supplying the carbon-containing auxiliary agent.
Is transported from the carbide outlet 6 in the continuous carbonization section to a mixer 21 for mixing the sewage sludge and the like with the carbide. It is sent from the mixer 21 to the granulation unit 19 by a conveyor. The carbide from the sewage sludge is fed back to the continuous carbonization unit and used to continuously treat the sewage sludge.

FIG. 2 is a longitudinal sectional view of an embodiment of a continuous carbonization section in the continuous carbonization apparatus for organic waste according to the present invention.
In the continuous carbonization section of this apparatus, a cylindrical casing 2 is provided on a machine base 1, and a continuous carbonization section 4 having an inner cylinder 3A and an outer cylinder 3B is provided therein. The upper part is the processing object supply unit 5. A lower portion of the continuous carbonized portion 4 is a tapered carbide outlet 6 having a narrow lower portion. A suction duct 8 for an organic gas collecting unit 7 is provided below the continuous carbonizing unit 4. This suction duct 8 is connected to an exhaust fan 9. The carbide discharged from the carbide outlet 6 is fed back by a feedback means 18 (indicated by a dashed line) such as a conveyor provided between the processing object supply sections 5 and is reused as a carbon-containing auxiliary. ing.

FIGS. 3 and 4 are enlarged views of a portion A in FIG.
In the continuous carbonizing section 4, the object to be treated is supplied from above, and is moved downward while carbonizing the reducing atmosphere in a state where there is almost no supply of air. For this purpose, an upper opening plate 11 and a lower opening plate 12 are provided in the continuous carbonized portion 4. Each of the structures has a plurality of passage holes (opening grooves) through which the object to be processed during carbonization passes. FIG. 5 shows a cross section of the lower opening plate 12. The upper opening plate 11 has substantially the same structure, except that the lower opening plate 12 is fixed to the apparatus casing 2 while the upper opening plate 11 is fixed.
Is movable in the horizontal direction. The upper opening plate 11
Is suspended in the continuous carbonized portion 4 by a suspension rod 13 and is connected to a cylinder 15 provided on a side surface of the device casing 2. If the passage holes 11a and 12a provided in the moving upper opening plate 11 and the fixed lower opening plate 12 are located at different vertical positions as shown in FIG. 3, the object to be processed cannot pass.
When the objects coincide in the vertical direction as shown in FIG. 4, the object to be processed can descend.

The object to be carbonized during carbonization is usually 600 to 650.
As a result, the upper opening plate 11 and the lower opening plate 12 are easily deformed. Further, the wall surface of the inner cylinder 3A around the continuous carbonized portion is also exposed to a high temperature. When deformation such as warpage of the upper opening plate 11 and the lower opening plate 12 occurs due to heat, the falling of the object to be carbonized becomes insufficient,
Movement becomes difficult and continuous carbonization becomes impossible. If a downward scraping plate is provided on the bottom surface of the upper opening plate 11, the movement may be rather difficult. Therefore, in the present invention, the cooling jackets 10A, 10B are provided on the upper opening plate 11 and the lower opening plate 12.
Is provided. The structure of the cooling jacket is shown in FIG. The refrigerant liquid moves toward the refrigerant outlet while bypassing the refrigerant inlet 12b around the plurality of passage holes 12a of the object to be processed. As the liquid of the refrigerant, water is suitable because it is inexpensive and easy to supply.

On the other hand, as shown in FIG.
When 11a and 12a are present at different positions, the object to be processed is placed on the lower opening plate 12 without falling.
The cooling jacket 10A is provided so as to protrude leaving a passage hole below the upper opening plate. Thus, each time the upper opening plate moves, the cooling jacket 10A interferes with the object to be processed so as to encourage the object to be dropped.
When the upper opening plate 11 is periodically moved left and right by a cylinder 15 that forms the swinging means 14 together with the hanging rod 13, the object to be processed or carbide can be dropped downward.

In the apparatus for continuously carbonizing organic waste according to the present invention, a cooling jacket 10 is also provided around the continuous carbonized portion 4.
C is provided. Thereby, thermal deformation and thermal decomposition of the inner cylinder 3A can be prevented.

An object to be treated with organic waste is put into the continuous carbonization section 4 and ignited by applying a burner flame to the continuous carbonization section 4 until the initial carbonization is stabilized. While carbonizing the reducing atmosphere in a state where there is almost no supply of air, while periodically moving the upper opening plate 11 left and right by the rocking means 14,
The carbide falls down. At this time, the exhaust fan 9 is rotated to forcibly remove the organic gas such as wood vinegar generated as a result of carbonization from the suction duct 8, and the organic gas is burned in the combustion furnace 16.
Organic gas such as wood vinegar may be collected by a collection tube that is bent in a U-shape in the middle and passes through the cooling water tank.

[0017]

According to the present invention, since the upper opening plate is smoothly moved, it is possible to continuously carbonize the object to be treated with organic waste without stagnation in the carbonization process. Reduction is always performed in a stable state, and a homogeneous carbide is obtained.
Since the upper opening plate, the lower opening plate, the inner cylinder, the casing and the like are not exposed to a high temperature, the device is hardly damaged and the durability is improved.

[Brief description of the drawings]

FIG. 1 is a process system diagram of a continuous carbonization apparatus for organic waste of the present invention.

FIG. 2 is a vertical sectional view of a continuous carbonization section in the continuous carbonization treatment apparatus for organic wastes of the present invention.

FIG. 3 is an enlarged view of a portion A in FIG. 2 when passing holes are present at different vertical positions.

FIG. 4 is a diagram corresponding to FIG. 3 when passing holes coincide in the vertical direction.

FIG. 5 is a sectional view of a lower opening plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine stand 2 Casing 3A inner cylinder 3B outer cylinder 4 Continuous carbonization part 5 Processing object supply part 6 Carbide outlet 7 Organic gas collection part 8 Suction duct 9 Exhaust fan 10A Cooling jacket 10B Cooling jacket 10C Cooling jacket 11 Upper opening plate 11a Passing hole 12 Lower opening plate 12a Passing hole 13 Hanging rod 14 Swing means 15 Cylinder 16 Combustion furnace 18 Feedback means 19 Granulation unit 20 Drying unit 21 Mixer

Claims (5)

[Claims] An apparatus for continuously carbonizing an object to be treated with sludge or organic waste containing organic matter, wherein a supply section for the object to be treated is provided above a continuous carbonization section in a reducing atmosphere. In the apparatus for continuous carbonization while lowering the object to be processed by matching the upper holes provided in the continuous carbonization part below the lower part and at least one of the upper opening plate and the passing holes provided in the lower opening plate coincide with each other, A continuous carbonization apparatus for organic waste, wherein a cooling jacket is provided on the lower opening plate. 2. A cooling jacket protruding leaving a passage hole below the upper opening plate, wherein the object to be processed is urged to drop due to interference of the cooling jacket when the upper opening plate moves. A continuous carbonization apparatus for organic waste as described in the above. 3. The continuous carbonization apparatus for organic waste according to claim 1, wherein a cooling jacket is provided around the continuous carbonization section. 4. The method according to claim 1, wherein a feedback means for carbide is provided between the carbide outlet below the continuous carbonization section and the supply section of the object to be treated, and the carbide is mixed with the object to be treated. Continuous carbonization equipment for organic waste. 5. A mixer for mixing the sewage sludge and the carbide, a granulator for facilitating the combustion of the sewage sludge,
A carbonization treatment device comprising a closed continuous carbonization section having an object supply section at an upper portion, wherein at least one provided in the continuous carbonization section moves through an upper opening plate and a lower opening plate provided at each of the lower opening plate. An apparatus for continuously carbonizing organic waste, wherein a cooling jacket is provided on an upper opening plate or a lower opening plate of an apparatus for continuously carbonizing while lowering an object to be treated by matching holes.