JPH06292875A - Garbage processing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent secondary pollution while reducing fuel costs. [Structure] The air in the deodorizing furnace 15 heated by the burner 16 flows into the processing furnace main body 1 to raise the temperature of the fermenter 3 to 70 to 90 degrees, and in the fermenter 3, growth of fermenting bacteria causes raw garbage. Fermentation, decomposition, and drying proceed in about 3 hours. The steam, dust, and malodorous components generated in the fermenter 3 are heated in the deodorization furnace 15 by the burner 16 to 700 to 900 ° C., and the vapor becomes fine particles invisible and the dust and malodorous components are burned out. [Effect] There is no white smoke, dust, or odor of water vapor in the exhaust gas, and the secondary pollution associated with garbage processing is prevented. Moreover, since the waste heat of the burner for secondary pollution prevention is diverted to raise the temperature of the garbage and the fermentation tank is efficiently heated from the lower side, the fuel consumption of the burner can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is a method for fermenting industrial garbage, which is mainly discharged from restaurants and restaurants, at a relatively high temperature of 70 to 80 degrees Celsius using high temperature fermenting bacteria.
The present invention relates to an apparatus for disposing of garbage that is decomposed and dried so that it can be effectively used as fertilizer or feed.

[0002]

2. Description of the Related Art Generally, most of the industrial garbage discharged from restaurants and restaurants is disposed of by incineration or landfill, but the organic garbage such as protein is contained in the garbage. It is possible to make effective use of it.

For this reason, raw garbage is put in a fermenter and kept at room temperature, medium temperature (40-60 degrees) or high temperature (70-90).
Temperature) and put fermenting bacteria suitable for each temperature,
A raw garbage processing device was devised, in which the raw garbage was collected in the form of powder granules that were easy to handle by fermenting, decomposing, and drying the raw garbage.

In such an apparatus for treating food waste, water vapor, dust, and malodorous components that are generated and suspended as the food waste is dried are contained in the air discharged from the fermentation tank.
If the discharged air is released into the atmosphere as it is, secondary pollution such as white smoke of water vapor, which causes discomfort, rises, and dust and foul odors are generated. It is necessary to provide a deodorizing furnace to heat the generated air to a pollution-free state.

[0005]

As a raw garbage processing apparatus provided with a deodorizing furnace, conventionally, a fermenter, a burner for heating the fermenting tank, a deodorizing furnace provided in an air discharge path in the fermenting tank, and
A burner for heating a deodorizing furnace is known. Such an apparatus performs fermentation / decomposition / drying treatment by raising the temperature of raw garbage in the fermenter with a burner for heating the fermenter,
The steam, dust, and malodorous components in the air discharged from this fermenter are heated in the deodorizing furnace by a burner for heating the deodorizing furnace from 700 to
When heated to 900 degrees, the water vapor is made into fine particles that are invisible, and dust and malodorous components are burned out. This causes white smoke of water vapor, which causes discomfort, to rise and dust and malodors to drift. The secondary pollution caused by the garbage disposal is prevented.

However, the above-mentioned garbage processing device is
A burner for decomposing / fermenting / drying garbage and a burner for preventing secondary pollution are used respectively, which has the drawback of high fuel cost for the burner. . Moreover, since the burner for heating the fermenter was designed to heat the fermenter from the upper side, the heating efficiency was poor, and this also contributed to the high fuel cost of the burner.

The present invention was devised in view of the above circumstances, and it is an object of the present invention to provide a garbage disposal device capable of preventing secondary pollution while reducing fuel costs. It is intended.

[0008]

As a means for solving the above-mentioned problems, the invention according to claim 1 is a fermentation tank provided in a main body of a processing furnace and internally provided with a stirring blade rotated by a drive mechanism. And a deodorizing furnace equipped with a burner for heating the internal air, an introduction path for introducing the air in the deodorizing furnace into the space below the fermentation tank in the processing furnace body, and the air in the fermentation tank in the deodorizing furnace. And a discharge path for discharging the air in the deodorizing furnace to the outside.

According to a second aspect of the present invention, in the first aspect of the invention, a subburner for heating the fermentation tank from below is provided in the processing furnace body.

According to a third aspect of the present invention, in the first or second aspect of the invention, a cooling fan for blowing a low temperature air flow into the exhaust passage is provided.

[0011]

In the invention described in claim 1, when the raw garbage is treated, first, the raw garbage, an appropriate amount of fermenting bacteria, and, if necessary, dried okara are put in the fermenter. A water conditioner such as the above is added, and these are stirred by a stirring blade to ignite the burner. The ignition of this burner heats the air in the deodorization furnace to a high temperature of 700 to 900 degrees Celsius, and a part of the heated air passes through the introduction path by being combined with hot air, so that the space below the fermentation tank in the processing furnace body is lower. Flow into.

The fermenter is heated from the lower side by the inflowing hot air. At this time, the hot air is 700
Since it was heated to a high temperature of ~ 900 degrees and has a sufficient amount of heat, the fermenter and the garbage in the fermenter are heated to a high temperature of 70 to 90 degrees, and the fermentation bacteria grow. This promotes the fermentation, decomposition and drying of raw garbage. Since the processing of raw garbage in the fermenter is performed at a high temperature of 70 to 90 degrees, it is completed within a short time of about 3 hours after the heating is started. When the treatment is completed, the treated powdery granular material in the fermenter is cooled and then collected.

During the processing of fermentation, decomposition and drying of raw garbage in the fermenter, water vapor generated by vaporization of water in the raw garbage and dust and malodorous components floating with the drying of the raw garbage Flows into the deodorizing furnace through the reflux passage together with the air in the fermenter. In the deodorizing furnace, when the inflowing air is heated to 700 to 900 degrees by the burner, the water vapor in the inflowing air becomes fine particles that cannot be visually recognized, and the dust and the malodorous component are burned out. The air thus treated as pollution-free in the deodorizing furnace is discharged into the atmosphere through the exhaust passage, but at this time, white smoke of water vapor, which gives an unpleasant feeling, rises and dust and bad odors drift around. Never.

As described above, according to the first aspect of the present invention, white smoke of water vapor, which gives an unpleasant sensation when exhausting, does not rise and dust or a bad odor does not drift around, so that it is not necessary to dispose of garbage. The occurrence of secondary pollution is prevented.

Moreover, as a heating source for raising the temperature of the raw garbage in the fermenter, a heat source dedicated to raising the temperature of the raw garbage is not provided, but exhaust heat of the burner which is a heating source for preventing secondary pollution is used. It is designed to improve the heating efficiency by diverting and heating the fermenter from the lower side of the fermenter rather than from the upper side of the fermenter. It consumes relatively little.

That is, according to the invention as set forth in claim 1, there is an effect that the generation of secondary pollution can be prevented while reducing the fuel cost.

Further, in the invention described in claim 2,
Since the subburner for heating the fermenter from its lower side is provided, even if the fermenter is large and the exhaust heat from the deodorizing furnace is not sufficient to raise the temperature of the raw garbage in the fermenter, It is possible to raise the temperature of raw garbage to a high temperature of 70 to 90 degrees, and it is possible to shorten the time required for the fermentation, decomposition and drying treatment of raw garbage.

Further, in the invention according to the third aspect, since the cooling fan is provided so that the low temperature air is blown into the exhaust passage, the high temperature which is treated without pollution in the deodorizing furnace. Air is discharged in a state of being cooled to a temperature of about 100 to 150 degrees by touching the low temperature air from the cooling fan, so that the area around the air outlet is not exposed to high temperature. There is an effect that can be done.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The processing furnace main body 1 is constituted by a plate material having a heat insulating property. Inside the processing furnace main body 1, there is provided a fermenter 3 provided with an input port and a recovery port with a lid (not shown) with a lid. It is fixedly installed with a distribution space between the side and bottom surfaces and the processing furnace body 1.

Inside the fermenter 3, a stirring blade 5 supported by a drive shaft 4 is housed, and the stirring blade 5 is a motor provided outside the processing furnace main body 1 (which is a component of the present invention). (Corresponding to a driving mechanism) 6 drives the sprockets 7 and 8
Also, it is adapted to rotate integrally with the drive shaft 4 which is interlocked via the chain 9. In addition, the fermenter 3 includes the fermenter 3
A communication port 10 for communicating the inside with the inside of the processing furnace main body 1 is formed, and a processed product temperature sensor 11 for measuring the temperature of the processed product in the fermenter 3 is provided.

A deodorizing furnace 15 for preventing secondary pollution, which is formed in a box shape by a heat insulating material, is provided above the processing furnace body 1. The deodorizing furnace 15 has a deodorizing furnace inside. A burner 16 for ejecting a flame toward is provided.

Between the deodorizing furnace 15 and the processing furnace main body 1, both ends of the deodorizing furnace 15 are located at positions far from the burner 16 of the deodorizing furnace 15.
An introduction path 17 is provided at a lower position corresponding to the bottom of the fermenter 3 of the processing furnace main body 1 while opening as a. An outside airflow inlet 20 for allowing outside air to flow into the introduction passage 17 is formed in the middle of the introduction passage 17.

A damper 31 is provided at a branch position between the introduction passage 17 and the outside air inlet 20, and the damper 31 is provided.
Is a state in which the introduction of the outside air from the outside airflow inlet 20 to the introduction passage 17 is prevented and the air can flow from the deodorization furnace 15 to the processing furnace main body 1, and a state where the deodorization furnace 15 and the processing furnace body 1
It is designed to be switched between a state in which the outside air is introduced into the processing furnace main body 1 from the outside airflow inlet 20 through the introduction path 17 while being prevented from flowing into the processing furnace main body 1.

An air temperature sensor 22 for measuring the temperature of the air flowing from the deodorizing furnace 15 into the introducing passage 17 is provided at the inflow port 17a of the introducing passage 17 which opens into the deodorizing furnace 15.

The introduction passage 17 is provided with an exhaust passage 23 branching from a position near the inflow port 17a opening in the deodorizing furnace 15. A cold air outlet 27 that blows out the low-temperature air sent from the cooling fan 26 toward the exhaust port 25 side is provided in a part of the exhaust passage 23 where the diameter is reduced.

Between the deodorizing furnace 15 and the fermentation tank 3, both ends are opened to the fermentation tank 3 as inlets 29a, and to the position near the burner 16 of the deodorizing furnace 15 as outlets 29b. A return path 29 with 30 is provided.

Next, the operation of this embodiment will be described. First,
The charging port is opened and raw garbage and an appropriate amount of fermenting bacteria are charged into the fermenter 3. As the fermenting bacterium to be used, "Bime Food" manufactured by Shimamoto Microorganism Industry Co., Ltd. and the like are preferable, but in addition to that, it is also possible to use a mixture of various types of microorganisms mainly composed of aerobic high temperature fermenting bacterium. it can. Furthermore, when the water content of raw garbage is high, dried okara, rice bran, etc. are added as a water content adjusting agent.

Next, the damper 31 is used to prevent the introduction of the outside air from the outside airflow inlet 20 into the introduction passage 17 and to deodorize the furnace 1.
5, the stirring blade 5 in the fermentation tank 3 is rotated by driving the motor 6 to ignite the burner 16 of the deodorizing furnace 15, and the reflux path 29 Recirculation fan 30 and cooling fan 26 of exhaust passage 23
Operate.

The air in the deodorizing furnace 15 is heated to a high temperature of 700 to 900 degrees by the burner 16. A part of the heated air becomes hot air, flows into the processing furnace main body 1 through the introduction path 17, flows into the fermentation tank 2 through the communication port 10, and passes through the reflux path 29 to deodorize the furnace. It circulates by the route of returning to the inside of 15.

The raw garbage in the fermenter 3 is crushed by being stirred by the agitating blades 5 and is heated by the hot air to wrap the outer bottom surface and the outer surface of the fermenter 3 in the processing furnace main body 1 from the outside,
And, the temperature is raised to 70 to 90 degrees by the hot air flowing into the fermenter 3 and mixed with the garbage.

In the fermenter 15, the temperature of raw garbage is maintained at 70 to 90 ° C., and the fermentation, decomposition and drying of raw garbage proceed due to the growth of fermenting bacteria. Since the fermentation, decomposition, and drying processes are carried out at a relatively high temperature of 70 to 90 degrees, they are completed within a short time of about 3 hours after the heating is started.

After the treatment is completed, the damper 31 is switched while keeping the ignition of the burner 16 and the stirring blade 5 stirring to prevent the hot air from flowing from the deodorizing furnace 15 into the processing furnace main body 1 and the outside airflow inlet 20. Then, the outside air is introduced into the processing furnace main body 1 through the introduction passage 17. As a result, the heating of the fermentation tank 3 due to the exhaust heat from the deodorizing furnace 15 is stopped, and the fermentation tank 3 and the powder granules remaining in the fermentation tank 3 due to the low temperature outside air flowing into the processing furnace main body 1 are stopped. The processed material is cooled. And this cooling is about 15
After the separation, the processed product is collected.

While the fermentation, decomposition, and drying processes are in progress in the fermenter 3, and during the cooling from the completion of these processes to the collection of the processed products,
Water vapor generated by vaporization of water in the garbage and dust and malodorous components floating with the drying of the garbage flow into the deodorizing furnace 15 through the reflux passage 29 together with the air in the fermentation tank 3.

In the deodorizing furnace 15, the steam in the inflowing air is heated by the burner 16 to 700 to
At a high temperature of 900 degrees, it becomes invisible fine particles, and dust and odorous components in the inflowing air are burned out by the burner 16.

The treated air thus heat-treated in the deodorizing furnace 15 is discharged into the atmosphere through the exhaust passage 23. At the time of exhaust, white smoke of water vapor which gives offensiveness from the exhaust port 25. There will be no secondary pollution such as rising up and dust and bad odors around.

The treated air to be discharged is sent out from the cooling fan 26 and the cold air outlet 27 in the exhaust passage 23.
100 to 150 by being sucked out by the eclectic action of the low-temperature air blown from the air and mixed with the air.
Since it is discharged in the condition that the temperature is low, the exhaust port 2
The area around 5 is not exposed to high temperatures.

As described above, the burner 16 of the deodorizing furnace 15 for preventing secondary pollution is not provided as a heating source for raising the temperature of the raw garbage in the fermenter 3 but a burner dedicated to raising the temperature of the raw garbage is provided. Waste heat is diverted, and the heating efficiency is improved by heating the fermentation tank 3 not from the upper side of the fermentation tank 3 but from the lower side and the side of the fermentation tank 3. There is. Therefore, the fuel consumption amount is small, the cost required for the treatment of raw garbage and the cost required for preventing the occurrence of secondary pollution due to the treatment of raw garbage are kept low.

In the present embodiment, the cooling fan 25 is used as a means for cooling the high temperature air that has been heated and incinerated in the deodorizing furnace 15 at the time of discharge, but instead of this, the exhaust passage 23 has a long chimney. You may make it into a shape. Also in this case, since the air collecting force is increased due to the long chimney shape, the effect of cooling the exhaust gas can be obtained.

The fermentation tank 3 is large and the deodorizing furnace 15 is used.
When it is possible to raise the temperature of the food waste only to a medium temperature of 40 to 60 degrees by only the exhaust heat from the above, it takes a long time to process the fermentation, decomposition and drying of the food waste. Therefore, in such a case, the processing furnace main body 1 may be provided with the sub-burner 2 for ejecting the flame at a position below the fermentation tank 3 inside the processing furnace main body 1. By heating the fermentation tank 3 with both the heat of the subburner 2 and the exhaust heat from the deodorizing furnace 15, the temperature of the raw garbage in the fermentation tank 3 is raised to a high temperature of 70 to 90 degrees, and the fermentation of the raw garbage is performed. -It is possible to shorten the time required for disassembly and drying.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram.

[Explanation of symbols]

1: Processing furnace main body 2: Sub burner 3: Fermenter 5: Stirring blade 6: Motor (driving mechanism) 15: Deodorizing furnace 16:
Burner 17: Introduction path 23: Exhaust path 25: Cooling fan 29: Reflux path

Claims (3)

[Claims] 1. A fermenter provided with a stirring blade inside a processing furnace main body, which is rotated by a drive mechanism, a deodorizing furnace equipped with a burner for heating internal air, and an air inside the deodorizing furnace. An introduction path for introducing into the space below the fermentation tank in the processing furnace main body, a reflux path for returning air in the fermentation tank to the deodorizing furnace, and an exhaust for discharging air in the deodorizing furnace to the outside. A garbage processing device, characterized by being configured with a road. 2. The garbage processing device according to claim 1, further comprising a sub-burner for heating the fermentation tank from below in the processing furnace body. 3. The garbage treatment device according to claim 1, further comprising a cooling fan for blowing a low-temperature air flow into the exhaust passage.