JP2003041260A - Carbonized product-manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonized product-manufacturing apparatus which can stably carbonize refuse in a short time and perform an activation treatment to modify a carbonized product in a manufacturing process, further permits a desalting treatment of a carbonized product containing salt derived from refuse, and realizes combustion, with suppressed generation of NOx, of a dry distillation gas generated on manufacturing a carbonized product. SOLUTION: The carbonized product-manufacturing apparatus comprises a carbonization oven 4 where dry distillation and carbonization of a material to be carbonized are carried out in the course of movement of the material to be carbonized from a supplying section to a discharging section, a combustion apparatus 7, arranged at the discharging section side of the carbonization oven, for a dry distillation gas generated during dry distillation and carbonization of the material to be carbonized, a connecting section 8 which connects the carbonization oven to the combustion apparatus and discharges a carbonized product, a water-washing tank 10 where the carbonized product discharged from the connecting section is temporarily stored and subjected to desalting by water-washing, and a conveying apparatus 15 for the carbonized product connecting the water-washing tank to the storage hopper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charcoal-producing facility for producing charcoal by subjecting combustible waste such as food waste, papers and wood to carbonization and carbonization treatment, particularly removing charcoal-derived salt. The present invention relates to a carbide production facility capable of realizing reforming.

[0002]

2. Description of the Related Art There are several known garbage carbonization apparatuses for carbonizing combustible waste such as food waste, papers, and wood to reduce the volume and amount thereof (for example,
JP-A-7-80236 and JP-A-7-100456).
However, since it is a batch-type carbonization device, it cannot be manufactured continuously, and it takes a considerable amount of time to completely carbonize the waste, and there is a problem that the entire operation time becomes long.

Further, Japanese Unexamined Patent Publication No. 2000-136390 proposes a continuous carbonization device capable of continuous operation. However, this device is subject to heat resistance of the screw conveyor and cannot be continuously operated for a long time, and it is necessary to perform desalting of the obtained carbide separately, which is not economical as a facility. .

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, that is, to carry out stable carbonization of waste in a short time regardless of the amount of waste input and the type of waste. In addition to being able to perform activation treatment that reforms the carbide in the manufacturing process, it also enables desalination treatment of carbide containing salt derived from garbage, and further combustion of dry distillation gas generated during carbide production can generate NOx. It is to provide a carbide manufacturing facility that is realized under control.

[0005]

In order to achieve the above-mentioned objects, the inventors have carried out a carbonization treatment step, a carbide treatment step,
The inventors have found that it is advantageous to realize a structure in which the treatment process of the dry distillation gas generated is continuous, and have completed a carbide production facility.

That is, the gist of the present invention is as follows. (1) Carbonization furnace for carbonization and carbonization of the material to be carbonized in the process in which the material to be carbonized moves from the supply part to the discharge part, and the carbonization material for carbonization arranged on the discharge part side of the carbonization furnace Combustion device for carbonization gas generated during carbonization, a connecting part for connecting the carbonization furnace and the combustion device and discharging the carbide, and a water washing process for temporarily storing the carbide discharged from the connection part for desalting by water washing A carbide production facility comprising a tank and a carbide transporting device that connects the water washing tank and the storage hopper.

(2) Carbide production equipment as described in (1) above, wherein the carbonization furnace is a rocking type carbonization furnace.

(3) In the above (1) or (2), the combustion device is a secondary combustion furnace provided with an air introduction device for secondary combustion, a diffusion tower having an air introduction device for tertiary combustion and an ejector device, Carbide production facility characterized by comprising.

(4) In the above item (3), there is provided a route between the secondary combustion furnace and the washing tank to introduce the steam generated in the washing tank into the secondary combustion furnace. Facility.

(5) In the above (4), as a route for introducing the steam generated in the washing tank into the secondary combustion furnace, there is a discharge tube facing the washing tank from the connecting portion, A facility for producing carbides, characterized in that steam generated in a water washing tank is introduced into a secondary combustion furnace, and the steam generated is used for reforming carbides and controlling combustion temperature during carbonization gas combustion.

(6) In any one of the above (1) to (5), a carbide conveyer has a screw conveyor for taking out the carbide from the washing tank, and the screw conveyor has a function of adjusting the water content of the carbide. Carbide production facility characterized by the above.

(7) In any one of the above (1) to (6), the washing tank has a function of controlling the amount of supplied water for adjusting the amount of desalination, and is a carbide producing facility.

With the above-mentioned structure, the facility for producing a carbide of the present invention enables continuous production of a carbide, and at that time, modification, desalting and drying of the carbide can be advantageously achieved, and further, the production of the carbide can be achieved. Combustion processing that does not cause the pollution problem of dry distillation gas generated at this time is realized.

Combustible waste such as food waste, papers, wood, etc., which is a raw material for carbide, is preferably processed into solid waste fuel having a predetermined shape and supplied to the carbonization furnace. That is, once processed into solid waste fuel, carbonization becomes easier, and by adding lime during solid waste fuel generation, it is possible to prevent the generation of bad odors and prevent adverse effects during carbonization. In addition, by adjusting to a predetermined shape, the conditions of dry distillation / carbonization are made uniform, and the product quality of the obtained carbide is stable.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the carbide producing apparatus of the present invention will be described more specifically. FIG. 1 shows a configuration of a carbide production facility according to the present invention. First, a solid waste fuel (hereinafter referred to as RDF) 1 processed into a predetermined shape is supplied to a hopper 3 from a supply conveyor 2 shown on the left side in the figure, and a predetermined amount is continuously cut out in the hopper 3 by a constant amount cutting in a carbonization furnace. 4 is being supplied. In the carbonization furnace 4, the RDF 1 is ignited by the ignition burner 5 at the start of operation, and after the ignition, the combustion is sequentially propagated to the RDF 1 that is continuously supplied, and continuous processing is performed.

The carbonization furnace 4 has a conical shape whose diameter is enlarged toward the discharge side. By giving the carbonization furnace 4 an oscillating motion, the RDF 1 supplied inside is subjected to carbonization / carbonization treatment. While moving toward the discharge side. Here, the carbonization / carbonization is performed by supplying air into the carbonization furnace by the blowers 6a to 6d mounted in the carbonization furnace 4, and is supplied from the lower part of the carbonization furnace to the RDF 1 in the furnace. Here, carbonization
In carbonization, it is important to control the amount of air so that complete combustion does not occur, and the oscillating movement of the carbonization furnace causes uniform carbonization while moving to the discharge side to the right in the figure.

At the discharge end of the carbonization furnace 4, the material to be carbonized, RD
The secondary combustion furnace 7, which is the main component of the combustion device that combusts the carbonization gas generated during the carbonization and carbonization of F1, is installed in the carbonization furnace 4.
And the secondary combustion furnace 7 are connected, and the carbide discharge part 8a
A connecting portion 8 including is provided at the tip of the secondary combustion furnace 7.

The connecting portion 8 is fixedly arranged, and a discharge pipe 9 for the manufactured carbide 1C is provided below the discharge portion 8a. The discharge pipe 9 for the carbide 1C is provided in the washing tank 10. Is facing the discharge end. Therefore, the carbide 1C continuously produced from the carbonization furnace 4 is
Led to the washing tank 10 without being exposed to the outside air and dropped into the water. The top surface of the washing tank 10 is covered with a lid 10a.

The secondary combustion furnace 7 is provided with an ejector blower 11 for sucking the dry distillation gas generated during the dry distillation / carbonization from the RDF 1. By blowing air from the ejector blower 11 toward the exhaust side in the diffusion tower 12 as indicated by arrow 11a, the dry distillation gas generated during the dry distillation / carbonization is sucked from the RDF 1 into the washing tank 10. The steam generated by the contact between the generated high-temperature carbide and water can flow in the discharge pipe 9 in the opposite direction to the flow of the carbide.

That is, the carbide 1C obtained through the carbonization furnace 4 is discharged from the connecting portion with the secondary combustion furnace 7, that is, the connecting portion 8 to the water washing tank 10 through the discharge pipe 9, and at that time, the water washing tank The steam generated in 10 is introduced from the connecting portion 8 to the secondary combustion furnace 7 via the discharge tube 9 by the suction action of the dry distillation gas in the secondary combustion furnace 7. In the process in which the steam rises through the discharge tube 9, the steam comes into contact with the carbide 1C falling in the discharge tube 9, and as a result, the carbide 1C is activated and improved into a porous carbide. The porosity of the carbide is extremely advantageous in expanding the use of the carbide. That is, it can be used not only as activated carbon but also as a soil improving material and a deodorizing material.

Further, the water vapor introduced from the discharge tube 9 is
The carbon dioxide is sucked into the secondary combustion furnace 7 side together with the carbon dioxide and contributes to the lowering of the combustion temperature when the carbon dioxide is burned by the supply of the secondary combustion air by the ejector blower 11 to suppress the generation of NOx. Furthermore, in the diffusion tower 12, the tertiary combustion air is sent by the tertiary combustion blower 13 into the diffusion tower 12, where the unburned gas is completely combusted.

On the other hand, the carbide 1C reaching the washing tank 10 is cooled by contact with washing water, and desalted under the control of the washing flow rate of the washing tank 10. This washing is performed with kg of carbide
It is preferable to supply an amount of water of about 2 to 5 times by weight, and the desalination treatment is completed by washing the carbide which maintains this amount of water. The amount of washing water may be adjusted depending on the degree of desalination. By the way, the water after washing is discharged as overflow water of the washing tank 10 through the drain groove 14 and sent to the water treatment facility.

Further, the carbide which has been washed in the washing tank 10 is taken out of the washing tank 10 via a conveying device 15 of a scraping type in the illustrated example. At that time, in addition to controlling the flow rate of washing in the washing tank 10, the retention time of the carbide in the washing tank is adjusted to control the temperature at the time of taking out the carbide, thereby adjusting the water content of the carbide. In the illustrated example, by using a screw conveyor as the transfer device 15, since it is possible to scrape up the carbide while stirring the carbide and water in the washing tank 10, in addition to being able to perform uniform desalination, Excess water can be removed and removed here by scraping. The residence time can be adjusted by controlling the rotation speed of the screw conveyor.

Next, the washed carbide having the adjusted water content is transferred to the storage hopper 16 via the transfer device 15,
A required amount is cut out from the storage hopper 16 and mounted on a dump 17 as shown, for example, and shipped.

[0025]

EFFECTS OF THE INVENTION According to the carbide production facility of the present invention, garbage can be stably carbonized in a short time, and in addition, activation treatment for modifying the carbide in the production process and carbide containing salt derived from the garbage can be performed. Since desalting treatment is also achieved, it is possible to stably produce a carbide of excellent quality. Further, it is possible to realize the combustion of the dry distillation gas generated during the production of the carbide while suppressing the generation of NOx.

That is, if the carbide producing equipment of the present invention is used, activation of the carbide is achieved by contact between steam and the carbide in the course of discharging the carbide, so that the carbide can be modified into a porous body. Since the steam generated from the washing tank can be used as this steam, there is an advantage that the quality can be improved at low cost. Further, the steam introduced from the water washing tank reaches the secondary combustion furnace, and the combustion temperature at the time of combustion of the carbonization gas is lowered to suppress the generation of NOx.

Further, the charcoal-based material is cooled in the water-washing tank, and the salt content derived from dust is removed by controlling the water-washing flow rate in the water-washing tank. As a result, the charcoal-containing material has no salt or a salt content as small as possible. Can be obtained. The carbonized product after the water washing treatment is taken out from the water washing tank via the transfer device. Since the water content of the carbide is adjusted by adjusting the temperature of the water taken out, the dry process is not necessary.
Then, the carbide whose moisture has been adjusted can be directly conveyed to the storage hopper and can be immediately shipped as a carbide product.

In particular, when the carbonization furnace for carbonization and carbonization is of an oscillating type, since a screw conveyor is not used, it is possible to continuously produce the carbide without being affected by the heat resistance of the screw conveyor. .

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a carbide manufacturing apparatus of the present invention.

[Explanation of symbols]

1 RDF (solid waste fuel) 4 carbonization furnace 7 Secondary combustion furnace 8 connection 9 discharge tubes 10 water washing tank 12 Dispersal tower 15 Conveyor

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryoichi Nagata             1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama             Shi) Kawasaki Steel Co., Ltd. Mizushima Steel Works F-term (reference) 3K061 PA03 PA08 PA16                 3K078 BA08 BA09 BA22 CA04 CA11                       CA27                 4H012 HA06 JA04 JA12

Claims (7)

[Claims] 1. A carbonization furnace that performs carbonization and carbonization of a material to be carbonized while the material to be carbonized moves from a supply section toward a discharge section.
A combustion device for the carbonization gas generated during carbonization / carbonization of the material to be carbonized, which is arranged on the discharge part side of the carbonization furnace, and a connecting part for connecting the carbonization furnace and the combustion device and discharging the carbide, A carbide production facility comprising: a washing tank for temporarily storing carbides discharged from a connecting portion for desalting by washing with water; and a carbide transporting device connecting the washing tank and a storage hopper. 2. The carbide production facility according to claim 1, wherein the carbonization furnace is a rocking type carbonization furnace. 3. The combustion apparatus according to claim 1 or 2, wherein the combustion apparatus comprises a secondary combustion furnace having an air introduction device for secondary combustion, and a diffusion tower having an air introduction device for tertiary combustion and an ejector device. Characteristic carbide manufacturing equipment. 4. The carbide manufacturing facility according to claim 3, wherein a path for introducing steam generated in the washing tank into the secondary combustion furnace is provided between the secondary combustion furnace and the washing tank. 5. The discharge tank according to claim 4, wherein the steam generated in the washing tank is introduced into the secondary combustion furnace by a discharge tube facing the washing tank from the connecting portion, and the washing tube is passed through the discharge tube. A carbide production facility characterized by introducing steam generated in a tank into a secondary combustion furnace and using the generated steam for reforming carbide and controlling combustion temperature during carbonization gas combustion. 6. The method according to any one of claims 1 to 5,
A carbide producing facility characterized in that it has a screw conveyor for taking out the carbide from the washing tank as a device for conveying the carbide, and the screw conveyor has a function of adjusting the water content of the carbide. 7. The method according to any one of claims 1 to 6,
The water washing tank has a function of controlling the amount of supplied water for adjusting the amount of desalination, and is a carbide production facility.