JP2003094010A - Heat treating equipment of bio-waste and heat treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat treating equipment and a heat treatment method for regenerating bio-waste, in particular exotic fish such as black bass, into feedstuff and a fertilizer. SOLUTION: The heat treating equipment 10 comprises a hopper 12 for feeding a material to be treated, a hot air dryer 14 for heat treating the material, a crusher 16 for crushing the material, a cyclone 18 for separating finely ground substances contained in exhaust from the hot air dryer 14, a deodorizing equipment 20 for burning the exhaust from the cyclone 18, and a chimney 22 for exhausting the exhaust from the deodorizing equipment 20. The material is crushed after heat drying treatment with the hot air of not lower than 500 deg.C and not higher than 700 deg.C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment apparatus and a heat treatment method for biological waste, which are particularly suitable for regenerating harmful foreign fish such as bluegill into feed and fertilizer.

[0002]

In recent years, in Lake Biwa and the like, moroko, crucian carp, ayu, etc., which are traditionally valuable resources, are drastically reduced due to the breeding of exotic fish such as bluegill and black bass. Since these exotic fish are not suitable for food, they are not bothered to be caught, and because there are few natural enemies, they are now breeding in the wild map. Therefore, attempts have been made to develop cooking recipes to encourage edible foods, but satisfactory results have not been obtained.

Therefore, the only thing that can be done for the time being is to try to exterminate them by extermination, but the method of treating the exotic fish that has been entrapped has become a major issue. A large amount of land is required to bury it in the soil, and above all, the offensive odor caused by decay is a problem. Alternatively, even if it is regenerated into feed or fertilizer, the conventional techniques have not been satisfactory in terms of quality and cost.

Therefore, the present inventor has conducted extensive studies to provide a heat treatment apparatus and a heat treatment method for regenerating harmful foreign fish such as bluegill into a high-quality feed or fertilizer in a large amount and efficiently, and as a result, the present invention was found. Was reached.

[0005]

The gist of the heat treatment apparatus for biological waste according to the present invention is to provide a hopper for supplying the treatment object and a hot air dryer for heat treating the treatment object. , A crusher for crushing the object to be treated, a cyclone for separating fine powder particles contained in the exhaust of the hot air dryer, a deodorizing device for burning the exhaust from the cyclone, and a device for exhausting from the deodorizing device It is configured to include a chimney.

Further, the heat treatment apparatus for such biological waste is provided with a treated product conveying means for conveying the treated product from the hopper to the hot air dryer.

Further, in such a biological waste heat treatment apparatus, a storage tank, an object transfer means for transferring an object to be processed from a hot air dryer to the storage tank, and a take-out port of the storage tank are provided. It was equipped with a crusher.

Further, in such a heat treatment apparatus for biological waste, an intake / intake means for inhaling air from the hopper and supplying it to the hot air generating furnace is provided between the hot air generating furnace of the hot air dryer and the hopper. There is something.

Furthermore, in such a biological waste heat treatment apparatus, the hot air dryer is provided with a rotary blade for stirring and crushing.

Further, in the biological waste heat treatment apparatus, the object convey means is a bucket conveyor.

Further, the gist of the heat treatment method for biological waste according to the present invention is 500 ° C. to 700 ° C.
It is to pulverize after heating and drying with the following hot air.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the heat treatment apparatus and heat treatment method for biological waste according to the present invention will be described in detail with reference to the drawings.

1 and 2 show an example of a heat treatment apparatus for biological waste according to the present invention, and FIG. 3 shows a flow of heat drying treatment of biological waste by the heat treatment apparatus 10. Shows. The heat treatment apparatus 10 includes a hopper 12 for supplying a processed product, a hot air dryer 14 for heat-treating the processed product, and a processed product conveying means 24 for transferring the processed product from the hopper 12 to the hot air dryer 14. A storage tank 28, an object transfer means 26 for transferring an object from the hot air dryer 14 to the storage tank 28, and a storage tank 28.
A pulverizer 16 provided under the outlet of the cyclone 18, a cyclone 18 for separating fine powder particles contained in the exhaust of the hot air dryer 14, a deodorizing device 20 for burning the exhaust from the cyclone 18, and a deodorizing device. It is mainly configured with a chimney 22 for exhausting from the device 20.

From the hopper 12 to the hot air dryer 14
Is installed in the recess 42 dug down from the ground 29, and the processed material carried in by a truck,
It can be dropped onto the hopper 12 as it is.

The lower part of the hopper 12 is tapered and connected to the processing object conveying means 24. At the bottom of the taper, the dropped processing objects may cause a so-called bridge and may not fall. Therefore, the hopper 1
A coarse wire mesh 31 is provided in the middle of 2, and the processed material is gradually dropped toward the processed material conveying means 24.

Further, as shown in FIG. 4, the hopper 1
The upper edge 13 of 2 is framed by a downward U-shaped guide path 15 having an open bottom. Further, the guide passage 15 and the hot air generating furnace 30 of the hot air dryer 14 are connected by the suction and air supply means including the suction passage 40, the suction fan 34, and the air supply passage 44. The suction fan 34 has a role of sucking the air near the inlet of the hopper 12 through the guide passage 15 and at the same time diluting the intake air with the outside air and sending the diluted air to the hot air generating furnace 30.

By providing the suction and air supply means between the hopper 12 and the hot air generating furnace 30, the strong odor generated from the processed material such as foreign fish is sent from the hopper 12 to the hot air generating furnace 30 without being diffused to the outside. Will be able to. Then, it is diluted with fresh outside air and supplied to the hot air dryer 14. In this example, the intake port of the hopper 12 is provided at the upper edge 13 of the hopper 12, but it may be provided in the middle or bottom of the hopper 12.

The processed material conveying means 24 is preferably a compulsory conveying means such as a twin screw which can control the feeding speed to the hot air dryer 14. For relatively large and uneven solid materials such as foreign fish, their movement is likely to be hindered by contact with the pipe wall. It is preferable to force the movement by using the power of the motor. However, in the present invention, the processed material conveying means 24 may be omitted, and the processed material may be directly fed from the hopper 12 to the hot air dryer 14.

The hot air drying is characterized in that it can be uniformly and efficiently dried at a predetermined temperature. In order to recycle biological waste into feed and fertilizer, it is an important issue to ensure the quality of the treated material, and drying using hot air is most suitable. The type of the hot air dryer 14 used is not particularly limited, but the hot air dryer 1 is provided with a rotary blade for stirring and crushing inside.
4 is particularly preferably used. The processed products such as foreign fish sent into the hot air dryer 14 are agitated by the rotor blades, and a part of them is crushed into a form that is easily dried.
The hot air supplied from the hot air generating furnace 30 allows efficient and uniform drying.

The hot air dryer 14 is provided with a processed product inlet and a processed product outlet, and a hot air inlet and a hot air outlet,
Hot air drying is performed as follows. That is, when a predetermined amount of the processed product is supplied into the hot air dryer 14, the processed product inlet and the processed product outlet are closed. Then, the hot air is flown from the hot air inlet to the hot air outlet while stirring with the rotary blades. The heat treatment time varies depending on the temperature of hot air and the amount of the processed material.

In order to stably obtain feed and fertilizer from foreign fish and the like, it is important to properly select the heat treatment temperature. The heat treatment temperature depends on the hot air temperature, but the hot air temperature is preferably 500 ° C. or higher and 700 ° C. or lower. If the temperature is 500 ° C. or less, it is difficult to obtain a sufficiently dried object to be treated and the drying time becomes long, which is not preferable.
Further, if the temperature is 700 ° C. or higher, carbides will be mixed into the object to be treated, which is not preferable. In addition, the measurement of the hot air temperature is performed by a conventional method immediately before the inlet of the hot air dryer 14.

The object to be treated, which has been heat-treated by the hot air dryer 14, is crushed to an appropriate size for use as feed or fertilizer. It is possible to dispose a crusher immediately after the hot air dryer 14 to crush the object to be treated taken out from the hot air dryer 14 immediately, but to cool the object to be crushed in order to improve workability. For the purpose of compensating the difference between the take-out speed from the hot air dryer 14 and the crushing speed, it is preferable that the object to be treated is once stored in a storage tank and then crushed.

Therefore, the storage tank 28 and the workpiece transporting device 26 for transporting the workpiece are preferably provided in the storage tank 28. However, in the heat treatment apparatus 10 illustrated in FIGS. Storage tank 28 of is installed at a high place,
A crusher 16 is provided below the outlet on the bottom of the crusher 16. The crushed object to be processed is received on a truck or the like, packed, and ready to be shipped, which is a particularly preferred embodiment of the present invention. A bucket conveyor is particularly convenient for transporting an object to be processed to a storage tank 28 provided at a high place. According to the bucket conveyor, the object to be processed can be efficiently carried in a substantially vertical direction, so that the installation area can be made extremely small.

Next, the exhaust system will be explained. The exhaust gas discharged from the hot air dryer 14 after being used for the heat treatment is guided to the cyclone 18 and the fine powder particles accompanied by the hot air dryer 14 are introduced. Are separated and collected. The type of cyclone is not particularly limited, and it is selected from among those usually used in consideration of the flow rate and the properties of the fine powder particles.

Exhaust gas from the cyclone 18 is discharged from the deodorizing device 2
It is deodorized at 0 and discharged into the atmosphere from the chimney 22. In the deodorizing device 20, organic substances such as oil contained in the exhaust gas are burned by the burner 33, and the various components causing the odor are burned off and deodorized.

Although the biological waste heat treatment apparatus and the heat treatment method according to the present invention have been described above in detail, the present invention is not limited to the above-mentioned citations and examples, and the constitution of the heat treatment apparatus and the hopper. , Hot air dryer, crusher, cyclone, deodorizer, chimney, etc. types and shapes, heat treatment conditions, etc., within the scope not departing from the spirit of the present invention, various improvements, modifications, changes based on the knowledge of those skilled in the art. It can be implemented in an added mode.

Next, examples of the present invention will be described in detail.

Example 1 Using a heat treatment apparatus 10 similar to that shown in FIGS. 1 and 2, a mixture of black bath and bluegill captured in Lake Biwa was heat treated. The mixing ratio of both was 4 to 6. This treated product (500 kg) was put into the hot air dryer 14, and was heated by flowing hot air at about 650 ° C. for 3 hours while stirring with a rotary blade having a spiral blade.
Then, it was once housed in the storage tank 28, cooled, and then pulverized to obtain a powdery object to be treated.

Table 1 shows the analytical results for feeding the treated material to feed, and Table 2 shows the analytical results for feeding fertilizer. It was confirmed to be suitable as feed or fertilizer. In addition,
The analysis method is as follows. Moisture: Normal pressure heating drying method Crude protein: Kjeldahl method Crude fat: Diethyl ether extraction method Crude fiber: Filtration method Crude ash: Direct ashing method Calcium: Potassium permanganate volume method Nitrogen amount: Sulfuric acid Phosphoric acid amount: Banado Ammonium molybdate method Potassium total amount: Atomic absorption measurement method Digestible crude protein, total digestible nutrients, Metabolizable energy: Japanese standard feed ingredient table, general composition and digestibility Fish meal (CP60%) of animal feed.

[0030]

[Table 1]

[0031]

[Table 2]

Example 2 As in Example 1, 20 kg per 700 kg of algae in Lake Biwa
Hot air from 0 to 500 ° C It heat-processed by flowing for 4.5 hours.
Table 3 shows the results of the analysis for feeding.
Table 4 shows the results of the analysis. Even for algae in Lake Biwa,
It was confirmed that it can be regenerated into feed or fertilizer.

[0033]

[Table 3]

[0034]

[Table 4]

[0035]

According to the heat treatment apparatus for biological wastes of the present invention, since the heat treatment by the hot air dryer is performed,
It is possible to uniformly dry at a predetermined temperature, and it is possible to stably and efficiently obtain an object to be treated suitable for feed and fertilizer.
In addition, since the fine particles are removed by the cyclone and the organic matter is burned by the deodorizing device and exhausted, the exhaust gas is substantially free of harmful substances and odors and does not pollute or disturb the surrounding environment.

Further, in particular, if the suction air supply means is provided between the hopper and the hot air generating furnace of the hot air dryer, it is possible to prevent the odor from being diffused when the biological material is introduced into the hopper.

Further, in particular, if a processed product conveying means for transferring the processed product from the hopper to the hot air dryer is provided, relatively large processed products such as foreign fish can be stably fed to the hot air dryer.

Further, in particular, a storage tank, and an object transfer means for transferring an object from the hot air dryer to the storage tank,
If a crusher provided below the outlet of the storage tank is provided, it will be possible to sufficiently cool the object to be crushed before it can be crushed without being restricted by the discharge speed from the hot air dryer. You will be able to choose. Then, the crushed object to be processed can be received on a truck or the like, packed, and immediately shipped.

Further, in particular, if the object conveying means is a bucket conveyor, the object can be efficiently conveyed in a substantially vertical direction to a hopper located at a high place, and the installation area can be made particularly small to reduce the equipment cost. Is effective.

Further, in particular, by using a hot-air dryer equipped with a rotary blade for stirring and crushing, the efficiency of heat treatment can be increased and the uniformity of the object to be treated can be improved.

Further, according to the method for heat treatment of biological waste according to the present invention, since it is heat-treated with hot air of 500 ° C. or more and 700 ° C. or less and then pulverized, it is sufficiently dried without inclusion of carbides and the like. , Good quality products suitable for feed and fertilizer can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a hot air dryer according to the present invention.

FIG. 2 is a plan view of the hot air dryer shown in FIG. 1 according to the present invention.

FIG. 3 is a block diagram showing a flow of heat treatment by the hot air dryer shown in FIGS. 1 and 2 according to the present invention.

FIG. 4 is a vertical cross-sectional view showing an enlarged vicinity of an upper edge of a hopper according to the present invention.

[Explanation of symbols]

10: Heat treatment device 12: Hopper 13: Upper edge of hopper 14: Hot air dryer 15: Guideway 16: Crusher 18: Cyclone 20: Deodorizing device 22: Chimney 24: Processed material conveying means 26: Transporting means for processed material 28: Storage tank 29: Ground 30: Hot air generator 31: Wire mesh 32, 33: Burner 34: Suction fan 36: Fuel tank 38: Attraction fan 40: suction path 42: hollow 44: Airway

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) C05F 1/02 B09B 3/00 303M F23G 7/06 ZAB F term (reference) 2B150 AE02 BA04 BD01 BD06 BE01 CD15 3K078 AA05 AA08 BA06 BA23 CA04 CA09 CA25 4D004 AA04 AB01 AC04 BA04 CA04 CA08 CA42 CA48 CB13 CB36 CB45 DA02 DA03 DA06 4H061 AA02 AA03 CC31 GG16 GG18 GG19 GG67 GG70 LL02

Claims (7)

[Claims] 1. A hopper for supplying a biologically processed product, a hot air dryer for heating and drying the processed product, and a crusher for crushing the heated and dried product to be processed. A cyclone for separating fine particles contained in the exhaust of the hot air dryer, a deodorizing device for burning the exhaust from the cyclone, and a chimney for exhausting from the deodorizing device, a biological waste Heat treatment equipment for objects. 2. A processed product transporting means for transporting a processed product from the hopper to the hot air dryer is provided.
The heat treatment device for biological waste according to [4]. 3. A storage tank for storing the object to be processed, an object transfer means for transferring the object to be processed from the hot air dryer to the storage tank, and a crusher provided below an outlet of the storage tank. The heat treatment apparatus for biological waste according to claim 1 or 2, further comprising: 4. The suction air feeding means for sucking air from the hopper and feeding the hot air to the hot air generating furnace, which is provided between the hot air generating furnace and the hopper of the hot air dryer. A heat treatment device for biological waste according to item 1. 5. The heat treatment apparatus for biological waste according to claim 1, wherein the hot air dryer is equipped with a rotary blade for stirring and crushing. 6. The heat treatment apparatus for biological waste according to claim 3, wherein the object conveying means is a bucket conveyor. 7. A heat treatment method for biological waste, which comprises heat-drying the treated material with hot air at 500 ° C. or higher and 700 ° C. or lower and then pulverizing the treated material.