JPH0788460A - Raw refuse treatment device - Google Patents

Abstract

PURPOSE:To conserve fuel consumption and to prevent the generation of secondary environmental pollution by constituting a raw refuse treatment apparatus of a fermentation tank equipped with stirring blades, a heated deodorizing furnace, the pipe introducing the air in the deodorizing furnace into the space of the fermentation tank and the discharge pipe discharging the air in a treatment furnace main body. CONSTITUTION:Raw refuse and a proper amt. of fermentation bacteria are charged in a fermentation tank 3 while stirring blades 5 are normally and reversively rotated and the burner 15 of a deodorizing furnace 10 is ignited. The air in the deodorizing furnace 10 is heated to 700-900 deg.C to become hot air. This hot air flows in a treatment furnace main body 1 to flow along the inner peripheral surface of the fermentation tank 3 to be discharged to the atmosphere through an exhaust pipe 20 and a discharge pipe 24. The raw refuse in the fermentation tank 3 is ground while stirred by the stirring blades 5 to be heated to 70-90 deg.C by the hot air enclosing the outer bottom surface and outside surface of the fermentation tank 3 from the outside and, by the propagation of fermentation bacteria, fermentation, decomposition and drying are started. By this constitution, raw refuse becomes a granular powder form after about 2hr.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Generally, most of industrial garbage discharged from restaurants and the like 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, steam in the air discharged from the fermenter, dust,
Remove the malodorous components in the deodorizing furnace with a burner for heating the deodorizing furnace.
It is heated to 0 to 900 degrees Celsius to make water vapor into fine particles that are invisible and burn out dust and malodorous components, which causes offensive white smoke of water vapor and dust and malodorous drift. It is designed to prevent the occurrence of secondary pollution associated with the processing of garbage.

However, the above-mentioned garbage processing device is
The burner for decomposing / fermenting / drying the garbage and the burner for preventing the secondary pollution have their own dedicated burners, which has the disadvantage of high fuel cost. . 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 such circumstances, and an object of the present invention is to provide a garbage disposal device capable of preventing secondary pollution while reducing fuel costs. It is a thing.

[0007]

Means for Solving the Problems As a means for solving the above problems, the present invention provides a stirring blade which is provided in a main body of a processing furnace with spaces on both sides and a bottom and which is rotated by a drive mechanism inside. And a deodorizing furnace that heats and heats the air in the fermenting tank by heat exchange, and an introducing pipe that introduces the air in the deodorizing furnace into the space on one side of the fermenting tank in the processing furnace body. And an exhaust pipe for discharging the air in the main body of the processing furnace from the space on the other side of the fermentation tank to the outside.

[0008]

In the present invention, when treating raw garbage, first, raw garbage, an appropriate amount of fermenting bacteria, and, if necessary, a water conditioner such as dried okara are added to the fermenter. After charging, these are stirred by a stirring blade and the burner of the deodorizing furnace is ignited. By the ignition of this burner, the air in the deodorizing furnace is heated to a high temperature of 700 to 900 degrees Celsius, and the heated air flows into the space on the one side of the fermentation tank in the main body of the processing furnace by passing through the introduction pipe as hot air. , Is discharged from the space on the other side through the exhaust pipe.

The inflowing hot air heats the fermenter from both sides and bottom. At this time, since the hot air was heated to a high temperature of 700 to 900 degrees as described above and has a sufficient amount of heat, the fermenter and the raw garbage in the fermenter have a temperature of 70 to 90 degrees. The temperature is raised to a high temperature, and the fermentation / decomposition / drying of raw garbage proceeds due to the growth of fermenting bacteria. During this period, water vapor in the garbage is vaporized, and dust and malodorous components floating with the drying of the garbage are heated by the heat exchange in the high-temperature deodorizing furnace together with the air in the fermentation tank, and then the deodorizing furnace. It is burned by a flame inside. For this reason, the water vapor in the air becomes fine particles that cannot be visually recognized, and the dust and malodorous components are burned out. The air thus detoxified in the deodorizing furnace flows into the space on one side of the fermentation tank in the main body of the processing furnace through the introduction pipe as described above,
After heating the fermenter, it is released into the atmosphere through the exhaust pipe on the other side, but at this time, white smoke of water vapor, which gives an unpleasant feeling, does not rise and dust and a bad odor do not drift around. Since the processing of raw garbage in the fermenter is performed at a high temperature of 70 to 90 degrees, it ends in a short time after starting heating.
When the treatment is completed, the treated powdery granular material in the fermenter is cooled and then collected. As described above, in the present invention, white smoke of water vapor, which gives an unpleasant feeling when exhausting, does not rise or dust or a bad odor is present in the surroundings, and the occurrence of secondary pollution associated with garbage processing 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 a deodorizing furnace which is a heating source for preventing secondary pollution. The heating efficiency is improved by diverting the heat from the fermentation tank from the both sides and the bottom surface of the fermentation tank instead of from the upper side of the fermentation tank. The deodorized air that needs to be deodorized is heated by heat exchange in the deodorizing furnace and then blown into the deodorizing furnace. The heat efficiency of the burner is significantly improved, which results in a relatively low fuel consumption of the burner.

That is, according to the present invention, it is possible to reduce the fuel cost and prevent the occurrence of secondary pollution.

[0012]

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 composed of a plate material having a heat insulating property, and inside the fermentation furnace 3, a fermenting tank 3 having an input port with a lid (not shown) opened to the outside of the processing furnace main body 1 and a recovery port is provided. However, it is fixed in a state where a circulation space is formed between the both side surfaces and the lower surface and the processing furnace main body 1.

Inside the fermenter 3, a stirring blade 5 connected to 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 drive mechanism) 6 drives the sprocket 7,
8 and a drive shaft 4 which is interlocked via a chain 9.

Above the main body 1 of the processing furnace, a combustion cylinder 11 made of a material having a high thermal conductivity is inserted into a cylindrical outer cylinder 12 made of a heat insulating material with a gap between them. A deodorizing furnace 10 for pollution prevention is provided. The deodorizing furnace 10 has a burner 15 for ejecting a flame toward a combustion cylinder 11.
Is provided, and the burner 15 of the combustion cylinder 11 is provided.
An inlet 13 is formed in the vicinity of, and a blower 16 of a blower 17 for feeding the air sucked from the fermentation tank 3 is formed at a position apart from the burner 15 of the outer cylinder 12. A punching metal 14 is stretched around the suction port 13 of the combustion cylinder 11.

An introduction pipe 19 for introducing high temperature air between the main body 1 of the processing furnace and one side surface of the fermentation tank 3 when the switching valve 18 is at the position shown by the solid line in the drawing at the tip of the combustion cylinder 11. Is connected to the surface of the processing furnace main body 1 on the other side.
Is connected to an exhaust pipe 20.

Further, a cooling blower 21 for blowing outside air is provided on the one side of the processing furnace body 1, and an inlet 2 for taking in a part of high temperature air is provided on the other side of the fermentation tank 3.
3 is formed.

Next, the operation of this embodiment will be described.

First, the fermenter 3 is opened by opening a charging port (not shown).
Put raw garbage and an appropriate amount of fermenting bacteria inside. 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, as shown by the solid line in FIG. 1, the switching valve 18 is brought into a state in which the combustion cylinder 11 communicates with the introduction pipe 19, and the motor 6 is driven so that the stirring blades 5 in the fermentation tank 3 are straightened. The burner 15 of the deodorization furnace 10 is ignited by rotating in the reverse direction.

The air in the deodorizing furnace 10 is heated by the burner 15 to a high temperature of 700 to 900 degrees. The heated air becomes hot air, flows into the processing furnace main body 1 through the introduction pipe 19, and makes a half turn around the fermentation tank 3, and the exhaust pipe 2
It passes through 0 and is discharged into the atmosphere from the discharge pipe 24.

The raw garbage in the fermenter 3 is crushed by being stirred by the agitating blades 5 and is crushed by the hot air that wraps the outer bottom surface and the outer surface of the fermenter 3 inside the processing furnace main body 1 from the outside. The temperature is raised to 70 to 90 ° C., and fermentation, decomposition and drying start due to the growth of fermenting bacteria.

Thus, the raw garbage becomes a granular powder after about 2 hours.

After the completion of the treatment, the switching valve 18 keeps igniting the burner 15 and stirring by the stirring blade 5 and the introduction pipe 19 is closed as shown by the chain line in FIG. The inflow of hot air into the processing furnace main body 1 is prevented and the blower 21 is activated to introduce the outside air into the processing furnace main body 1. As a result, the heating of the fermenter 3 by the exhaust heat from the deodorizing furnace 10 is stopped, and the processing furnace main body 1
The fermenter 3 and the powdery granular processed material left in the fermenter 3 are cooled by the low-temperature outside air flowing therein. Then, after this cooling is performed for about 30 minutes, the processed product is recovered by opening a recovery port (not shown).

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, together with the air in the processing furnace body 1 flowing from the intake port 23 formed in the fermentation tank 3, are blowers. It is pressure-fed by 17 through the blow-in port 16 and blown into the combustion cylinder 11 from the inflow port 13, while it is sufficiently heated by heat exchange with the combustion cylinder 11. The gas blown into the combustion cylinder 11 collides with the punching metal 14 and is swirled by the burner 15
Combustion by mixing with the flame of 700 to steam
At a high temperature of 00 degrees, it becomes invisible fine particles and dust and odorous components in the inflowing air are burned out.

The treated air thus heat-treated in the deodorizing furnace 10 is discharged into the atmosphere through the discharge pipe 24. At the time of exhaust, white smoke of water vapor, which causes discomfort, rises. There is no secondary pollution such as dust or odors around the area. As described above, as a heat source for raising the temperature of the raw garbage in the fermenter 3, a burner dedicated to raising the temperature of the raw garbage is not provided, but exhaust heat of the burner 15 of the deodorizing furnace 10 for secondary pollution prevention is provided. Is also diverted, and in the deodorizing furnace 10, the air to be incinerated is heated by heat exchange with the combustion tube 11,
Moreover, the heating efficiency is improved by heating the fermenter 3 not from the upper side of the fermenter 3 but from the lower side and the side of the fermenter 3. Therefore, the fuel consumption amount is small, and 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 can be kept low.

Further, by applying or mounting a material that easily radiates far infrared rays such as far infrared paint or ceramics on a part or all of the inner surface of the fermenter, the radiant heat is effectively used and fermentation and decomposition are being performed. You may make it accelerate | stimulate evaporation of the water | moisture content of dust.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

[Explanation of symbols]

1: Processing furnace body 3: Fermenter 5: Stirring blade 6: Motor (driving mechanism) 10: Deodorizing furnace 11: Combustion cylinder 12: Outer cylinder 13: Inlet port 15: Burner 17: Blower 1
9: Inlet pipe 20: Exhaust pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B01D 53/74 B01D 53/34 116 H (72) Inventor Shinji Ito 3 Shiomidai, Isogo-ku, Yokohama, Kanagawa Prefecture -3-53-5-525 (72) Inventor Mitsuhisa Sano 5 Minamiborihata, Yabu-cho, Tokai City, Aichi Prefecture

Claims (1)

[Claims] 1. A fermenter, which is provided in the main body of the processing furnace with a space on both sides and a bottom and has stirring blades which are rotated by a drive mechanism, and heats the air in the fermenter by heat exchange. A deodorizing furnace that heats by heating, and an introducing pipe that introduces air in the deodorizing furnace into a space on one side of the fermentation tank in the processing furnace body,
An organic waste treatment device comprising: an exhaust pipe for discharging the air in the treatment furnace main body from the space on the other side of the fermentation tank to the outside.