JPH07280231A - Method for treating garbage - Google Patents

Abstract

PURPOSE:To provide a method for treating garbage in which the garbage can be efficiently incinerated by using a simple home incinerating furnace. CONSTITUTION:The method for treating garbage comprises the steps of inputting the garbage into an upper part of a burning furnace 1 having an exhaust duct 7 at an upper part, igniting combustible garbage in the state that combustible garbage is disposed in a lower part of the furnace, evaporating moisture in the garbage by combustion heat of the combustible garbage, and then burning the dried and weight-reduced garbage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating food waste that efficiently incinerates the food waste by using a simple household incinerator.

[0002]

2. Description of the Related Art The disposal of garbage generated from ordinary households is usually entrusted to the general government, but in view of the serious problems in recent years, it is inevitable to resort to specialists for non-combustible garbage such as metals and glass. Even if not combustible waste, it is desirable to treat them individually in a simple household incinerator.

[0003]

[Problems to be Solved by the Invention] However, among garbage, raw garbage is defined as "moist garbage such as food scraps and leftovers from the kitchen" (published by "Iwanami Kokugo Dictionary", Iwanami Shoten). Since it usually contains a large amount of water, it could not be burned with other combustible waste such as paper and plastic. That is, when the food waste and other combustible waste are mixed and burned, the heat of combustion is used because the water content in the food waste becomes steam and the combustion propagation is impaired, or this steam is combustible. In many cases, the combustion was not completely performed because the oxygen supply to the refuse was obstructed. Further, since it is for household use, it does not have a structure for compulsorily burning with fuel, so that the garbage cannot be incinerated in the end, and it is left to the collection of the trader.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above circumstances, and the raw garbage is positioned in the upper part of the furnace of a combustion furnace having an exhaust duct provided above and the combustible waste is placed in the lower part of the furnace. The combustible waste is ignited in a state where it is positioned, the moisture in the raw waste is evaporated by the heat of combustion of the combustible waste, and then the dried and reduced raw waste is burned. It relates to the disposal method of garbage.

The method of treating food waste according to the present invention will be described in order. First, the food waste is placed in the upper part of the furnace of a simple household incinerator having an exhaust duct in the upper part, and combustible in the lower part of the furnace. Position the garbage. The food waste to be placed in the upper part of the incinerator may be only food waste, or may be a mixture of food waste and other combustible waste, which has been drained (water removal) to some extent in advance. desirable.
In addition, the concrete method to position the garbage in the upper part of the furnace is
Although not particularly limited, it is usually housed in a heat-resistant container such as a stainless steel mesh, punching metal, or a ceramic container, or placed on the upper surface of a heat-resistant shelf so that this container or the shelf can be attached and detached. It may be attached to the upper part of the furnace. The means for attaching the heat-resistant container or shelf is not particularly limited, and a suitable member may be provided on the inner wall surface of the furnace or the like so as to be supported. Further, the heat resistance of the container or shelf means a material that can withstand repeated use. For example, the melting temperature of a general steel material is 1250 to 1150 ° C, and SUS304 is used.
It is known that the melting temperature of SUS430 is 1450 to 1400 ° C, and the melting temperature of SUS430 is 1510 to 1400 ° C. It is desirable to have a shape in which food waste does not easily scatter, and a shape in which food waste easily receives combustion heat from below.

The other construction of the incinerator is not particularly limited, and, for example, when the garbage and combustible waste are provided on the upper lid surface in nine places, the combustible waste is introduced. Must be configured so that the heat-resistant container or shelf does not interfere with its input, and when the food waste is input, it is possible to easily add the food waste inside the heat-resistant container or on the upper surface of the shelf. For example, if the heat-resistant container is configured to be slidable in the horizontal direction in the upper part of the furnace, throw the food waste into the container from the charging port with the heat-resistant container facing the charging port. The raw garbage can be positioned in the upper part of the furnace by the above, and the flammable garbage is dropped and positioned in the lower part of the furnace by inserting the flammable garbage in the state that the container is slid laterally and separated from the charging port. be able to.

Next, the combustible waste located in the lower part of the furnace is ignited. In this case, for example, a flame (combustible combustible material) may be charged from the charging port to ignite, a long lighter may be used for ignition, or any other means may be used for ignition. You may let me. Further, when the combustible waste located in the lower part of the furnace is ignited, the raw waste located in the upper part of the furnace may be ignited at the same time.

Combustion heat and combustion gas generated by the ignition and combustion of the above-mentioned combustible dust fills the inside of the furnace, flows toward the exhaust duct, and is supplied to the garbage disposed in the upper part of the furnace. The combustion heat supplied to the food waste evaporates the water contained in the food waste to dry and reduce the weight of the food waste. Since the steam and gas generated from the raw garbage are discharged from the exhaust duct together with the combustion gas, there is no adverse effect on the combustion of the combustible waste. It is desirable to remove an offensive odor such as rotten odor from garbage by attaching an appropriate adsorbent. Incidentally, in the portion located in the surface layer portion of the raw garbage, water easily evaporates and may be burned and carbonized by the combustion heat of the combustible waste, but in the portion located inside, the water is hard to evaporate, In many cases, the water is partially evaporated and the weight is reduced. Therefore, it is desirable to appropriately stir.

After a certain amount of combustible waste is burned, a part of it is incinerated and carbonized, and most of the water is evaporated to dry and reduce raw waste. At that time, it may be left for a while and exposed to the combustion heat remaining and staying in the furnace. Then, the dried and reduced raw garbage is subjected to the same treatment as above by facing the upper part of the furnace again when a certain amount of combustible waste is burned according to the degree of drying, and further dried and reduced. Alternatively, it may be mixed with combustible waste and then burned and carbonized in the same manner as in normal combustion.

[0010]

EXAMPLES Examples of the present invention will be shown below.

As shown in FIG. 1, basket hanging bars 3 and 3 are integrally fixed near the upper ends of side walls 2 and 2 of a household incinerator (capacity of 160 liters) 1 having a substantially box shape, and the basket is suspended. Mesh basket between the bars 3 and 3 (stainless steel deep model; φ2
(35 × 100 mm, mesh size 1 mm) 4 was slid over the slide supporting rods 5 and 5 to make the mesh basket 4 slidable in the lateral direction. Above mesh basket 4
The slide mechanism of No. 2 is also extracted and shown in FIG. Further, the upper lid 6 is provided with an inlet 8 provided with a door on which an exhaust duct 7 can be erected and opened and closed, and the exhaust duct 7 and the inlet 8 are arranged in parallel along the sliding direction of the mesh basket 4. In the figure, 9 is a base part which is the bottom wall of the furnace,
Reference numeral 10 is a lead-out portion for taking out combustion ash and incombustibles to the outside of the road. Further, the lower half portion of the internal volume of the furnace shown by the dotted line is a storage portion for burning the combustible waste.

The mechanism for sliding the mesh basket 4 in the above apparatus is not limited to the above-mentioned one, but may be constructed as shown in FIGS. In this case, the basket suspension bar 3, on the lower surface side of the upper lid 6 of the incinerator 1,
Hook 11 provided on the top of the mesh basket 4 for fixing 3
... is slidable by engaging with the basket hanging bar 3 described above. Further, as shown in FIG. 5, notches 12 and 12 may be provided at the upper ends of the inner surfaces of the side walls 2 and 2, and the ends of the basket hanging bar 3 may be mounted so as to be dropped into the notches 12 and 12 from above. As shown in FIG. 6, charging holes 13 and 13 may be provided in the side walls 2 and 2, and the basket hanging bar 3 may be attached to the charging hole 13 from outside the furnace.

Using the illustrated incinerator 1, a mixture of 1 kg of newsprint and 0.2 kg of plastic (styrofoam resin food tray) was used as a combustible waste for one batch. In addition, as the food waste to be stored in the mesh basket, there is a food waste mixture of vinyl and paper mixed with food waste (about 100 g) for one day of one family (four families), only 487 g of food waste. Two types were used. still,
The raw garbage contained fruit skins such as bananas and apples, vegetable skins such as carrots and onions, shrimp shells, bream bones and skins, and tea leaves.

[Incineration test] (1) First, a combustible waste having the above-mentioned configuration is supplied to the lower half of the furnace of the incinerator 1, and a garbage mixture in which vinyl etc. are mixed with the garbage, or the garbage. Then, the combustible dust was ignited in a state where only the mesh basket 4 was slid into the mesh basket 4 through the charging port 8 and the mesh basket 4 was slid to face the lower part of the exhaust duct 7. (2) After burning the combustible waste put in the lower half of the furnace (burning time 5 to 10 minutes), check the combustion state of the raw waste stored in the mesh basket 4, and after stirring, 24 hours I left it. (3) From the above (1) until raw garbage can be incinerated.
(2) was repeated.

[Test result 1, the above-mentioned food waste mixture] The vinyl and papers contained in the food waste mixture were well burned and carbonized when a single flammable waste was burned, but the food waste had its surface layer. Only part burns and other parts (inside)
Then it was in a state of raw burning. In addition, it was confirmed that only a small amount of water remained when left for 24 hours after burning one batch of combustible waste, and all was burned and carbonized when the combustible waste was burned on the second day. .

[Test Result 2, Only the Raw Garbage] When one flammable waste burned, almost no carbonization was observed on the surface of the raw garbage, and some residual moisture was confirmed even after standing for 24 hours. It was However, as in the incineration test of the food waste mixture, the combustible waste was completely burned and carbonized on the second day.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-mentioned embodiments, and may be carried out in any manner unless the configuration described in the claims is changed. You can

[0018]

In summary, the method for treating food waste according to the present invention utilizes the heat of combustion produced by the combustion of combustible waste in a simple household incinerator for the purpose of efficiently drying and reducing the amount of food waste. The waste can be burned quickly.

Therefore, the present invention makes a great contribution to solving the so-called dust problem in recent years.

[Brief description of drawings]

FIG. 1A is a partially cutaway front view showing an example of an incinerator used in the present invention, and FIG. 1B is a partially cutaway side view.

2 is a perspective view showing a sliding mechanism of a mesh basket used for the incinerator of FIG. 1 for storing food waste. FIG.

FIG. 3 is a perspective view showing another aspect of the mesh basket for storing food waste.

4 is a partially cutaway side view showing an upper lid of an incinerator to which the mesh basket of FIG. 2 is attached.

FIG. 5 is a cross-sectional view showing an example of a mounted state of a basket suspension bar that suspends and supports a mesh basket that stores food waste.

FIG. 6 is a cross-sectional view showing another example of a mounting state of a basket suspension bar that suspends and supports a mesh basket that stores food waste.

[Explanation of symbols]

 1 Combustion furnace 7 Exhaust duct

Claims (1)

[Claims] 1. The combustible waste is ignited by placing the garbage in the upper part of the furnace of a combustion furnace having an exhaust duct provided above and igniting the combustible waste in the lower part of the furnace. A method for treating food waste, characterized in that the water in the food waste is evaporated by the heat of combustion of the food waste and then the dried and reduced food waste is burned.