JPH08132008A - Organic waste carbonizing treatment device - Google Patents

Abstract

PURPOSE: To provide an organic waste carbonizing treatment device in which since water contained in organic waste is evaporated and also carbonized to sharply reduce weight thereof, disposal thereof is easy, and which is widely applied to organic waste which has been hard to decompose and ferment and is also used in facilities in a city area because it generates no malodor. CONSTITUTION: In a treating vessel 1 for housing thermophile which absorb a nitrogen content and generate heat by itself and organic waste such as garbage 10 to be treated, an agitating device 2 is installed, and also a compressor 4 for feeding gaseous nitrogen into the treating vessel is installed. A controller tar controlling the compressor 4 to adjust the feed quantity of gaseous nitrogen, and also a temperature sensor connected to the controller are installed in the treating vessel 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for carbonizing organic waste having a high water content such as garbage by photothermal bacteria.

[0002]

2. Description of the Related Art In recent years, since kitchen garbage and food processing plants in hotels, restaurants, and food service centers are easily decomposed, bad odors and insects such as flies are generated, which is unsanitary. It is done by landfill.
However, wastes such as vegetables, meat, and fish that are produced during cooking and food waste such as leftover foods cannot be incinerated alone because of high water content, and landfill disposal sites are insufficient. It is desirable to dispose of the waste yourself at the facility that discharges it.

For this reason, various treatment apparatuses have been developed that can be used in facilities that discharge a large amount of food waste, and, for example, an apparatus for fermenting and decomposing food waste to produce compost is the most popular.
This fermentation decomposition method uses microorganisms to ferment food waste and compost it, and it can be effectively used as a soil improvement agent, but it takes a long time to decompose, there is little volume reduction, and there are problems such as the generation of foul odors. In addition, there is a problem in that it is difficult to establish a sales route due to complicated labor such as packing, storage and transportation for selling the manufactured compost as a product. In particular, the okara from the tofu manufacturing plant contains lecithin and is difficult to decompose and ferment, making it difficult to compost,
Currently, most of the landfill is landfilled.

[0004]

SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned problems, and can evaporate the water content of an organic waste and carbonize it to a great extent to reduce the volume significantly. The present invention provides an organic waste carbonization treatment apparatus that can be widely applied to wastes and does not generate a foul odor and can be used even in facilities in urban areas.

[0005]

The apparatus for carbonizing organic waste according to claim 1 of the present invention is provided with a photothermia which absorbs nitrogen and generates heat by itself, and an organic waste to be treated. In addition to the stirrer, a compressor for supplying nitrogen gas into the processing container is provided, and a controller for controlling the compressor to adjust the nitrogen gas supply amount is provided, and a temperature sensor connected to the controller is provided. It is provided in the processing container. Furthermore, the invention according to claim 2 is characterized in that a heater is attached to a gas supply pipe for supplying nitrogen gas into the processing container.

[0006]

When the organic waste is carbonized by the carbonization apparatus of the present invention, first, a bed of a mixture of photothermal bacteria which absorbs nitrogen and self-heats is put in a processing container. Next, after setting the temperature of the control device, organic waste such as food waste and food waste is put into the processing container. After this, the agitator is operated to agitate the fungal bed mixed with photothermia and the organic waste, and at the same time the compressor is operated to supply the nitrogen-containing air to the organic waste while heating it with a heater. To do.

When the organic waste is stirred by the stirrer while supplying the heated air as described above, the photothermia contained therein absorbs the nitrogen gas which occupies three-fourths of the air and generates heat by itself to raise the temperature. As it rises, a large amount of water vapor and gas evaporate, and the vaporized water vapor and gas are discharged to the outside. When the temperature rises further and exceeds 90 ° C, carbonization begins. After this, the temperature further rises, and when the temperature reaches the set temperature, the temperature sensor detects this and outputs the measurement signal to the control device,
From here, a stop signal is output to the compressor to stop and the air supply is cut off. When the supply of air is stopped in this way, the supply of nitrogen gas is stopped, so that the heat generated by photothermia is reduced and the temperature in the processing container is lowered. When the temperature drops to the specified temperature, this is detected by the temperature sensor, and when the compressor is operated again to start supplying nitrogen gas, the heat of photothermia becomes active and the temperature rises again. All can be carbonized to significantly reduce the amount.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In the figure, 1 is a processing container, 2 is a stirrer provided in the processing container 1, 3 is a nitrogen gas ejection nozzle provided in the processing container 1, and 4 is a compressor for supplying nitrogen gas. The processing container 1 is formed of a heat insulating material 5, and an exhaust pipe 6 is attached to the center of the cap portion 14. As shown in FIG. 2, a lift device 7 is provided beside the processing container 1, and the lift device 7 is provided with a plurality of buckets 9 ... A stock portion 11 for storing food waste 10 is provided on the bottom side of the lift device 7, and a loading lid 12 is attached to the stock portion 11.

Further, a throwing shooter 13 is provided above the lift device 7, and the throwing shooter 13 has a cap portion 14
Garbage that has been conveyed in a bucket 9 by diagonally penetrating the
10 is put into the processing container 1. 15
Is a shielding plate provided on the input shooter 11 so as to be openable and closable. A take-out lid 16 is attached to the side wall of the processing container 1 on the side opposite to the lift device 7, and a discharge shooter 17 is provided outside this.

As shown in FIG. 1, the stirring device 2 is
A shaft 20 is erected at the center of the processing container 1, and a plurality of stirring blades 21 ... Are attached to the outer periphery of the shaft 20. The lower side of the shaft 20 penetrates the bottom surface of the processing container 1 and is supported by the base 22. Reference numeral 23 denotes a motor, which is connected to a speed reducer 24, and a chain wheel 25 attached here and a chain wheel 26 attached to the shaft 20 are connected by a chain 27.

Further, a nitrogen gas supply pipe 28 is connected to the compressor 4 attached to the base 22, the tip of which is guided to the bottom side of the processing container 1, and this tip serves as the nitrogen gas ejection nozzle 3. . A rod-shaped heater 29 is provided in the middle of the nitrogen gas supply pipe 28. Further, as shown in FIG. 2, a temperature sensor 30 for measuring the internal temperature is attached to the upper portion of the processing container 1, which is connected to the compressor 4 via a control device (not shown).
The operation of is controlled to adjust the supply amount of nitrogen gas.

Next, a method of treating the food waste 10 by the organic waste carbonization treatment apparatus having the above structure will be described. First, a bacterium bed 31 mixed with photothermal bacteria that absorb nitrogen and generate heat by itself is placed in the processing container 1. Next, the temperature of the control device (not shown) is set. In this controller, for example, if the maximum temperature inside the processing container 1 is set to 100 ° C, the compressor 4 will stop when the internal temperature reaches this,
When the temperature reaches 90 ° C, the operation of the compressor 4 is restarted again. After this, as shown in FIG.
Open and put the garbage 10 into the stock section 11 from here,
When the chain conveyor 8 of the lift device 7 is operated, the bucket 9 attached here rotates, and the garbage 10 is sequentially picked up and conveyed to the upper side, and inverted at the upper part to throw in the shooter.
It is dropped into 13 and is put into the processing container 1 from here.

On the other hand, as shown in FIG. 1, the motor 23 is rotated, and the motor 23 is decelerated by the speed reducer 24. This rotational force is transmitted from the chain wheel 25 to the chain 27 through the chain wheel.
When the shaft 20 is transmitted to 26, the stirring blade 21 of the stirring device 2 is rotated and the fungal bed 31 mixed with photothermia and the garbage 10
Is stirred. At the same time, the compressor 4 is operated to supply the air containing the nitrogen gas to the nitrogen gas supply pipe 28, and the rod-shaped heater 29 provided in the middle supplies about the air.
Heat it to about 50 ℃ and remove the garbage 10 from the nitrogen gas jet nozzle 3.
Inject it inside.

When the food waste 10 is stirred by the stirrer 2 while supplying the heated air as described above, the photothermia contained therein absorbs the nitrogen content of nitrogen gas which occupies three-fourths of the air and heats itself. Come on. Photothermophiles can continue to reproduce even if the temperature rises to several hundreds of degrees Celsius.
When it rises to a certain degree, various bacteria die, and when it exceeds 70 ℃, it becomes garbage.
A large amount of water vapor and gas contained in 10 are evaporated, and the vaporized water vapor and gas are discharged to the outside through the exhaust pipe 6 provided in the cap portion 14, and carbonization starts when the temperature exceeds 90 ° C.

After this, the temperature was further raised and the
When the temperature reaches 00 ° C., the temperature sensor 30 detects this, and the measurement signal is output to the control device. From this, a stop signal is output to the compressor 4 to stop and the air supply is cut off. When the supply of air is stopped in this way, the supply of nitrogen gas is stopped, and the heat generation of photothermia is reduced, and the temperature inside the processing container 1 is gradually decreased. When the temperature drops to 90 ° C., this is detected by the temperature sensor 30, and when the compressor 4 is operated again to start supplying nitrogen gas, the heat of photothermia becomes active and the temperature rises.

A graph of this state is shown in FIG. 3, in which the temperature in the processing container 1 is adjusted within the range of 90 to 100 ° C., and evaporation and carbonization of water in the garbage 10 progresses to form a pumice stone. Will become. The raw garbage 10 usually has a water content of 90% or more, and since this water is removed and further carbonized, the volume can be greatly reduced to 5% or less of the input amount in the final state.
Further, even after several days have passed since the operation was stopped, even if the garbage 10 is put into the apparatus again to operate the apparatus, photothermophilia remain in the carbonized bed 31, so that it can be processed again. In addition, since the volume is reduced by carbonization, even if it is continuously operated for a long period of time, the bacterial bed 31 in the processing container 1 does not increase so much, and the carbonized bacterial bed 31 is discharged by 1 ton of garbage 10 per day. Even if it is treated, about once a week is enough.

When the carbonized bacterial bed 31 is increased, FIG.
By opening the take-out lid 16 shown in and rotating the stirring device 2,
The pumice-like carbide is brittle and collapses and is forcibly discharged, and is packed into a bag or the like not shown through the discharge shooter 17. The pumice-like carbide obtained in this way is effective as a soil improvement material, but it is easy to dispose because it has a small volume even if it is disposed of.

According to the experiment, 1 ton of okara, which was difficult to be composted by the production of tofu, was treated in the processing container 1.
While controlling the rotation speed of the agitator 2 to 1.5 times per minute, setting the set temperature to 100 ° C., controlling the air supply amount from the compressor 4 and adjusting the temperature as shown in FIG. When treated, the okara could be completely carbonized in 6 hours, and the amount of the charcoal was about 30 kg.

Further, as shown in FIG. 4, the tip of the exhaust pipe 6 for discharging the water vapor and gas generated by heating the garbage 10 by the photothermia that self-heats is passed through the water tank 32 to cool the water vapor and gas. It is liquefied and collected, and when this condensate 33 is collected, it contains a large amount of amino acids and chito acids, which can be effectively used as fertilizers and insecticides.

In the above embodiment, the case where one compressor 4 is installed has been described, but a method in which two compressors are provided and one controller is turned on and off by the control device may be used.
Further, in the above embodiment, the case where the lift device 7 is provided beside the processing container 1 has been shown, but in the case of a small size, the structure may be such that the cap portion 14 is opened and the raw garbage 10 is thrown directly from there. In the above embodiment, the set temperature in the processing container 1 is
Although the case of setting the temperature to 100 ° C. is shown, it can be set arbitrarily according to the processing amount and the processing time, and when the processing amount is large and the processing is performed in a short time, it may be set to about 150 ° C., for example. Garbage is 10 as carbonized organic waste.
However, the dehydrated cake discharged from the sewage treatment plant can be treated in the same manner.

[0021]

As described above, according to the apparatus for carbonizing organic waste according to the present invention, the organic waste is heated by using photothermal bacteria that absorb nitrogen and generate heat by itself to evaporate water. Since it can be carbonized and greatly reduced in volume, it can be easily disposed of, can be widely applied to organic waste that has been difficult to decompose and ferment in the past, and since it does not generate a bad odor, it can be used in facilities in urban areas. Further, the carbonized organic waste can be used as a soil improving agent, and the liquid obtained by condensing steam generated during heating has various effects such as being effective as a fertilizer or an insecticide.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an organic waste carbonization treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the organic waste carbonization treatment apparatus shown in FIG.

FIG. 3 is an explanatory diagram showing a temperature control state in a processing container.

FIG. 4 is a cross-sectional view showing an apparatus for condensing water vapor or gas discharged from an exhaust pipe.

[Description of sign]

 1 Processing Container 2 Stirrer 3 Nitrogen Gas Jet Nozzle 4 Compressor 5 Insulation 6 Exhaust Pipe 7 Lifting Device 8 Chain Conveyor 9 Bucket 10 Garbage 11 Stock Part 14 Cap Part 16 Extraction Lid 20 Shaft 21 Stirring Blade 22 Base 23 Motor 24 Speed reducer 28 Nitrogen gas supply pipe 29 Heater 30 Temperature sensor 31 Bacteria bed 32 Water tank 33 Condensate

Claims (2)

[Claims] 1. A stirrer is provided in a processing container for containing photothermia that absorbs nitrogen content and generates heat by itself and an organic waste to be processed, and a compressor for supplying nitrogen gas into the processing container is provided. , With a control device that controls this compressor to adjust the nitrogen gas supply amount,
An organic waste carbonization treatment device, wherein a temperature sensor connected to this control device is provided in the treatment container. 2. A heater is attached to a gas supply pipe for supplying nitrogen gas into the processing container.
The organic waste carbonization treatment device described.