JPH01184319A - Garbage incinerator device - Google Patents

Abstract

PURPOSE:To provide a home-use garbage incinerator device which can be used safely and in sanitary form by a method wherein a gas absorbing means such as water is arranged on a discharged gas path after passing a deodorant catalyst. CONSTITUTION:Discharged gas generated by combustion of garbage at a combustion chamber 4 passes through a deodorant catalyst 23 at first and then deodored. Toxic gas such as SO2, NOx etc. generated in the discharged gas through this deodoring process passes through gas absorbing means 25 including water and the like, thereby discharged as water solution after its absorption. Due to this fact no toxic gas is contained in the discharged gas generated by the combustion from the garbage combustion device and so a safe and sanitary operation is assured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Field of Industrial Application) The present invention relates to a kitchen waste incineration device that effectively incinerates kitchen waste, particularly food waste, for example at home.

(Prior Art) In recent years, kitchen waste incineration devices, so-called garbage incineration devices, have become widespread in households, and direct disposal of garbage in households is progressing. However, when disposing of kitchen waste immediately at home, it is difficult to ignite and incinerate it due to its high moisture content. For this reason, conventional garbage incineration devices that utilize dielectric heating using microwaves have been considered.

A food waste incineration W device that uses dielectric heating using microwaves is equipped with special equipment such as a magnetron as a microwave generation source and a waveguide for introducing microwaves. In order to prevent microwaves from leaking to the outside, chokes and the like having a shielding property against microwaves are provided at each required part of the incinerator. The garbage is then heated from within, dried and incinerated.

Also, from the point of view of safety and reduction of initial costs,
A food waste incineration device using an electric heater has been considered.

This device heats and dries food waste using heat radiation and hot air convection while controlling heater input and air supply based on temperature and time, and then ignites and incinerates the garbage.

By the way, when incinerating food waste, in addition to the difficulty of igniting it as mentioned above, there is also the problem of deodorization. That is, preventing the generation of odors from incinerators is an extremely important problem to be solved in order to popularize garbage incinerators in general households. A common method for deodorizing is to exhaust the exhaust gas after incinerating garbage through a deodorizing catalyst.

(Problems to be Solved by the Invention) However, when a deodorizing method using a catalyst is applied to a garbage incinerator using dielectric heating using microwaves and a garbage incinerator using an electric heater as described above, With deodorization, the oxidation of the odor progresses, and the sulfur content contained in the odor and the nitrogen valve are reduced to 802, NOx.
The problem is that it turns into harmful substances such as In other words, instead of deodorizing the exhaust gas, harmful gases are newly generated.

The present invention was made based on the above-mentioned drawbacks of conventional devices, and an object of the present invention is to provide a kitchen waste incineration device that can be used safely and hygienically for household use.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention has a structure in which the exhaust gas generated in the incineration chamber is discharged to the outside after passing through at least a deodorizing catalyst. In kitchen waste incineration equipment,
The gist is that a gas absorption means using water or the like is provided on the exhaust path of the exhaust gas after passing through the deodorizing catalyst.

(Function) Exhaust gas generated by incineration of kitchen waste is first deodorized by passing through a deodorizing catalyst. Harmful gases such as 802 and NOx generated in the exhaust gas by this deodorization treatment are absorbed and discharged as an aqueous solution by passing through the next gas absorption means containing water and the like. Therefore, the exhaust gas from the kitchen waste incineration device that accompanies incineration does not contain harmful gases and is safe and sanitary.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

FIGS. 1 and 2 are a perspective view and a sectional view of a kitchen waste incineration apparatus, a so-called kitchen waste incineration apparatus, according to an embodiment of the present invention.

First, to explain the configuration of the garbage incineration device, the device of this embodiment can be installed adjacent to a kitchen sink, etc., or independently, and is housed in a compact external housing 1. It is composed of The right side surface of the casing 1 in FIGS. 1 and 2 corresponds to the front surface, and an input port 2 for garbage, etc. is provided in the upper part of the front surface, and a hinge portion 13 is connected to the input port 2 by rotating the hinge portion 3a. It is installed so that it can be opened and closed by moving. An upper can body 5 constituting an incineration chamber 4 is disposed within the housing 1 adjacent to the garbage input port 2. The upper can body 5 is coated with a high emissivity coating on its inner surface to increase its emissivity, and a heat insulating material 6 is attached to its outer surface as a heat insulating means to prevent heat leakage to the outside. It's suppressed.

A heat insulating material 6 is attached to the door 3 as well as to the outer surface of the upper can body 5. An electric heater 7 is attached to the surface of the upper can 5 so as to be insulated from the upper can 5 and covered with a heat insulating material 6. Although not shown, the garbage incineration apparatus is provided with appropriate power supply control means for the electric heater 7.

Below the upper can body 5, there is raw garbage 8 to be thrown into the incineration chamber 4.
A grate 9 for solid-liquid separation is installed, and the grate 9
The rotating shaft 9a is constituted by an ignition heater, and an ash discharge plate 11 is attached below the grate 9 so that it can be opened and closed by rotation with a hinge portion 11a as a pivot point. An ash receiver box 12 is disposed below the ash discharge plate 11 to receive the ash after burning the garbage, and a drain port 1 is provided at a position corresponding to the tip of the ash discharge plate 11 in the closed state.
3 is provided.

Further, a supply and exhaust system for supplying and exhausting air to and from the incineration chamber 4 is configured as follows. That is, the side wall of the lower can body 10 immediately below the grate 9 has the housing 1
A heater 22 for heating air is provided between the intake port 14 opened at the rear of the tank and the lower can body 10 to form an air supply system. On the other hand, an exhaust port 15 is opened in the side wall of the upper can body 5 facing the garbage inlet 2, and this exhaust port 15 is communicated with the exhaust duct 10. Furthermore, a blower 18 is installed in the exhaust duct 16 near the outside air exhaust port 17. is installed internally to form the exhaust system. In this exhaust system, an exhaust treatment device 20 is disposed as an exhaust treatment means for deodorizing the exhaust gas from the incineration chamber 4.

The exhaust treatment device 20 includes a deodorizing catalyst 23 formed in a honeycomb shape, and a heating heater 21 for heating the deodorizing catalyst 23.
Harmful gases generated after passing through the deodorizing catalyst, such as 802
, NOx, etc., are provided with a gas absorption means, that is, a gas absorption device 25. Deodorizing catalyst 23
The deodorizing performance is maintained by being heated to, for example, 300° C. or higher by the heating heater 21.

FIGS. 3(a) and 3(b) are configuration diagrams showing the configuration of the gas absorption device M25. This device includes a gas inlet 26,
It consists of a gas outlet 27, a water supply 028, a drain 29, and a water supply nozzle 30, and the device 25 is further filled with a filler 31 for holding water. In this device, while supplying water from a water supply nozzle 30, exhaust gas is taken in from a gas intake port 26 and exhausted to a gas discharge port 27 via a filler 31. At this time, the feed mm'+8 in FIG. 1 performs suction so as to smoothly exhaust the gas from the gas discharge port 27. While the exhaust gas accompanying the incineration from the gas intake 026 passes through the filler 31, harmful gas components are absorbed by water. The absorbed harmful components are passed through the drain port 29 as an aqueous solution to the drain port 13 on the incinerator side.
More water is drained to the outside. The structure of the gas absorption device 25 includes one in which the exhaust gas is taken in from the top to the bottom as shown in (a), or one in which the exhaust gas is taken in from the bottom to the top as shown in FIG. (b).

Next, the incineration process and operation of garbage by the apparatus configured as described above will be explained.

First, the door 3 is opened, and the garbage 8 is thrown into the incineration chamber 4 from the garbage inlet 2. The raw garbage 8 contains scraps of vegetables, seafood, etc. from home kitchens, and therefore contains a high proportion of water. The ash discharge plate 11 is closed, and the garbage 8
The moisture inside flows down through the grate 9 and is drained from the drain port 13.

In this way, after the input garbage 8 is drained, the ash discharge plate 11 is closed to its original state.

Next, the electric heater 7 is energized from the power supply means to heat the upper can body 5, and at the same time, the blower 18 is driven to start the air supply and exhaust system. By heating the upper can body 5, the garbage 8 is heated by radiant heat from its inner surface and convection of heated air. In the initial heating process, the moisture remaining in the garbage 8 is evaporated, and the evaporation of moisture is promoted by the action of discharging the evaporated moisture by the air supply and exhaust system and the action of supplying air from the intake port 14. , heating of the garbage 8 is promoted. Evaporation is a phase change from a liquid phase to a gas phase, so while the garbage 8 contains a large amount of water, it maintains a temperature of around 100°C, but as drying progresses and the temperature exceeds 100°C, most of the water is lost. The temperature rises rapidly, and the ignition heater 9a performs intensive heating, thereby igniting and starting combustion. After ignition, power supply to the air heating heater 22 and the electric heater 7 is stopped. The exhaust gas generated during this combustion process is deodorized by a deodorizing catalyst 23, and is discharged to the outside from an outside air exhaust port 17 via a gas absorption device 25 for absorbing newly generated harmful substances into water. Even if the temperature inside the incineration chamber 4 becomes high during the combustion process, the temperature rise on the outer surface of the casing 1 can be suppressed to below the required safe upper limit temperature by providing the heat insulating material 6.

After incineration, the ash generated by carbonization and ashing in the above combustion process is removed by rotating the grate 9 around the rotating shaft 9a and simultaneously rotating the ash discharge plate 11 vertically around the shaft 11a.
The ash is dropped into a box 12 and taken out of the apparatus.

In addition, the harmful gases SO2, NOx, etc. absorbed in water are diluted while restricting the flow rate of water from the water supply and drainage ports 28 and 29 to a concentration that satisfies the standards for domestic wastewater stipulated by law. 13 to the outside.

Therefore, according to this embodiment, the exhaust gas is deodorized by passing through the deodorizing catalyst 23, but is oxidized and contains harmful components. The exhaust gas emitted from the incinerator is sufficiently safe and sanitary because it is absorbed by water. In addition, harmful components absorbed in water can be removed by controlling the flow of water supplied to the gas absorption device.
It is sufficiently safe because it is diluted to a concentration that meets legal standards.

[Effect of the invention 1 As explained above, according to the present invention, the exhaust gas generated by incinerating food waste is made odorless by the deodorizing catalyst, and the harmful gases generated by oxidation of the odor are treated by the gas absorption device using water etc. Therefore, food waste can be safely and hygienically incinerated and disposed of.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a kitchen waste incineration device according to an embodiment of the present invention, FIG. 2 is a sectional view of the device shown in FIG. 1, and FIG. 3 is a main part of the device shown in FIGS. 1 and 2. FIG.

Claims (1)

[Claims] In a kitchen waste incinerator having a configuration in which exhaust gas generated in an incineration chamber is discharged to the outside after passing through at least a deodorizing catalyst, gas absorption means using water or the like is provided on the exhaust path of the exhaust gas after passing through the deodorizing catalyst. A kitchen waste incineration device characterized by: