JPH07233931A - Reduced-pressure drying garbage incinerator and treating method of combustion exhaust gas - Google Patents

Abstract

PURPOSE:To obtain a reduced-pressure drying garbage incinerator and a treating method of combustion exhaust gas which make it possible to incinerate garbage efficiently, to reduce the volume thereof and to put the exhaust gas in a state of being free from soot dust, smoke and odor. CONSTITUTION:Stock garbage 1a is assorted and charged sequentially as cut-out garbage 1b to be processed subsequently, into a drying chamber 3a and a combustion chamber 3b partitioned by an opening-closing door in the main body 31 of an incinerator inside a reduced- pressure chamber 23 and it is dried by reduced-pressure microwave heating in the drying chamber 3a and then subjected to oxygen incineration in the combustion chamber 3b. A combustion gas thus produced is led to the drying chamber 3a through a communication pipe 49 for auxiliary heating of garbage 1c in the drying chamber and water is vaporized from the garbage by the effect of this heating and the reduced-pressure microwave heating. Both the water vapor thus obtained and the combustion gas are led to a cooling trap 52 by a vacuum pump 54 and the water vapor is condensed by cooling and made to drop into the cooling trap 52 to be subjected to water-vapor separation. In the process of condensation of the water vapor, soot dust, smoke, a hazardous gas and odor are washed and exhausted. Incineration ashes are discharged from an ash discharge door 24 through an ash box 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste vacuum drying / incinerator and a combustion exhaust gas treatment for incinerating food waste generated in commercial kitchens and households by microwave heating and drying under reduced pressure. It is about the method.

[0002]

2. Description of the Related Art Conventionally, when incinerating food waste, the entire amount of the garbage is put into an incinerator at a time, and the incinerator is incinerated by a combustion flame from an oil or gas burner under atmospheric pressure.

[0003]

Since garbage contained in commercial kitchens and households has a much higher water content than general combustible waste, it is difficult to ignite or burn it, and combustible. In the dry state, when the total amount of raw garbage generated is put in at one time, the energy efficiency of water evaporation from the deep part of the raw garbage is poor, the drying becomes insufficient, incomplete combustion occurs during combustion, soot, There is a lot of smoke and bad odor, and harmful gas may be generated due to the mixing of food container plastic, etc. Also, the incinerator must be upsized in proportion to the amount of food waste treated, and safety management of the incinerator and its surroundings becomes a problem. Has become. This invention is to solve the above-mentioned problems, in order to efficiently incinerate the generated garbage, an incinerator is installed in the decompression chamber, the garbage is separated into fixed amounts, a drying step and a combustion step. The purpose of the present invention is to provide a highly safe incinerator for food waste by downsizing the incinerator by efficiently performing the above steps.

[0004]

In order to achieve the above object, in the incinerator according to the present invention, a garbage stock section (1) for containing garbage and a decompression chamber section for internally installing an incinerator main body section are provided. (2) and the incinerator unit (3), which are roughly classified, and the food waste stock unit (1) includes a stock hopper (11) and a hopper lid (12).
And a cutting shutter (13) for separating a predetermined amount from the stock garbage (1a) to obtain the next processed cut garbage (1b)
And a shutter drive cylinder (1
4) and an object presence / absence confirmation sensor (15) for detecting the presence / absence of food waste to be processed. The food waste stock section (1) is installed above the decompression chamber section (2).
The decompression chamber part (2) includes a chamber inlet closed door (21), a closed door opening / closing cylinder (22) for opening and closing the door, a chamber (23), and an ash discharge door (24).
The chamber inlet closing door (21) and the ash discharge door (24) are closed, and the chamber exhaust pipe (51) provided on the side surface of the chamber (23) is evacuated by the vacuum pump (54). 23) The inside pressure is reduced. The chamber inlet hermetically closed door (21) is also opened and closed with the function of the bottom door of the food waste stock section (1). Inside the chamber (23), the incinerator body (31) has the incinerator legs (38).
The upper door (32) of the drying chamber and the upper door opening / closing cylinder (33) for opening and closing the drying chamber upper door (32)
An intermediate door (34) and an intermediate door opening / closing cylinder (35) for opening / closing thereof, a combustion chamber lower door (36) and a lower door opening / closing cylinder (37) for opening / closing thereof are provided, and the upper chamber is a drying chamber (3a).
And the lower chamber is the combustion chamber (3b). Close the cut-out shutter (13), and the raw garbage that is partitioned between the closing door (21) for closing the chamber inlet is next processed. Cut-out raw garbage (1b)
As a result, the intermediate door (34) of the incinerator body (31) is closed, the drying chamber upper door (32) is opened, then the chamber inlet closing door (21) is opened, and the next-processing cut-out garbage (1b) is opened.
Drop into the drying room (3a) and dry in the drying room (1c)
Then, the drying chamber upper door (32) and the chamber inlet closing door (21) are closed. The raw garbage stock section (2) opens the cutting shutter (13) as the preparation for the next treatment, lowers the stock garbage (1a) by its own weight, and the sensor for detecting the presence / absence of the object (15) detects the raw garbage (1b) for the next processing. Check the presence and wait. By operating the vacuum pump (54), the gas inside the chamber (21) is moved to the chamber exhaust pipe (5).
The inside of the decompression chamber part (2) is decompressed by being exhausted from the cooling trap (52) from the (1), and at the same time, the drying chamber (3
a) and the gas inside the combustion chamber (3b) through the communication space (49) from the drying chamber exhaust pipe (50) to the cooling trap (5).
After 2), it is exhausted and decompressed. A microwave waveguide (42) for heating is provided on the side surface of the drying chamber of the incinerator body (31).
And a magnetron (41), and a waveguide lid (43) made of a microwave transparent material is attached to the drying chamber connecting portion of the waveguide (42). Further, a metal net-like air-permeable lid is attached to the exhaust pipe lid (4) at the connecting portion of the drying chamber exhaust pipe (50) and the connecting portion of the communicating pipe (49), respectively.
5), as a connecting pipe lid (44). When microwave (1c) in the drying room is heated under reduced pressure, microwaves are absorbed inside the garbage and turned into heat, increasing internal vapor pressure and transferring moisture inside the garbage to the outside, while moisture is saturated steam. Start evaporation at a low temperature corresponding to the pressure. The evaporated water vapor is sucked and discharged from the drying chamber exhaust pipe (50) to the cooling trap (52) by the operation of the vacuum pump (54).
The humidity sensor (46) of the drying chamber (3a) senses the dry state of the drying chamber garbage (1c) to detect the drying based on the change in humidity, and then the intermediate door (34) is opened to dry the combustion chamber (3b). After that, throw in the garbage and put in the middle door (3
4) is closed and it becomes the combustion chamber garbage (1d). The raw garbage (1b) cut out from the raw garbage stock section (1) is dropped again into the drying chamber (3a) by the above-mentioned operation to form the drying chamber raw garbage (1c). As a result, the dry room garbage (1
c) and the combustion chamber food waste (1d) are stored in the respective processing chambers, and thereafter, drying and combustion are performed simultaneously. From the oxygen gas generator to the combustion chamber (3b), the check valve for oxygen (5
8) and oxygen through the oxygen supply pipe (57), the combustion burner (47) ignites the combustion chamber garbage (1d), and supplies oxygen to cause the garbage to self-burn. Due to the operation of the vacuum pump (54), the combustion gas in the combustion chamber (3b) is sucked into the drying chamber (3a) through the communication pipe (49) connecting the combustion chamber and the drying chamber, and the drying chamber exhaust pipe (as well as the evaporation vapor in the drying chamber) ( 50) is sucked and discharged into the cooling trap (52), cooled in the cooling trap (52), and the evaporated water vapor is condensed and dropped to separate water and water. Combustion gas is exhausted from the cooling trap (52) through the vacuum pump pipe (53). The evacuation speed capability of the vacuum pump (54) is selected to be sufficiently larger than the sum of the amount of evaporated water vapor in the drying chamber, the amount of oxygen supplied to the combustion chamber, and the amount of combustion gas generated, and the depressurized state during processing is maintained. The combustion state of the garbage in the combustion chamber is sensed by the temperature sensor (48), and after the completion of combustion is detected by the temperature change of the temperature sensor (48), the oxygen supply is stopped and the lower door (36) of the combustion chamber is opened. The incinerated food waste ash is dropped and stored in the ash receiving box (70). Then, the lower door of the combustion chamber (36) is closed to handle the next process. Ash receiving box (70)
Is an incinerator leg (38) at the four corners that supports the incinerator (31)
Between them and below the lower door (36) of the combustion chamber. Repeating the above drying process and burning process,
When there is no food waste in the drying chamber (3a), that is, when the food waste to be treated is sequentially dried and incinerated and the last combustion chamber food waste (1d) is incinerated, it goes to the drying chamber (3a). The water valve (63) is opened, an appropriate amount of water is supplied from the water supply pipe (61) through the water check valve (62), microwave heating is performed, and steam is generated in the drying chamber (3a). Along with the combustion gas sucked into the drying chamber, it is discharged from the drying chamber exhaust pipe (50) to the cooling trap (52) and cooled in the cooling trap (52). Combustion gas is cooled trap (5
It is exhausted from 2) through the vacuum pump pipe (53). After incinerating the total amount of food waste in the food waste stock section (1), the ash receiving box (70) containing the incinerated ash is discharged from the ash discharge door (24) provided on the lower side surface of the chamber (23). To do. The present invention is a food waste reduced pressure dry incineration apparatus and a combustion exhaust gas treatment method having the above-mentioned configurations.

[0005]

When the food waste incinerator configured as described above is operated, drying treatment and combustion incineration treatment are sequentially performed from the total amount of the treated food waste for every fixed amount. Food waste contains a large amount of water, but when it is heated in a microwave under reduced pressure for each fixed amount of processing, evaporation of water starts at a low temperature corresponding to the saturated vapor pressure due to the degree of vacuum, and microwaves start from the surface of the food waste. It penetrates to the inside, and its energy is directly absorbed by water molecules and converted into heat, which has the effect of increasing the internal vapor pressure and transferring the internal moisture to the outside. It is known that the efficiency of microwave heating varies greatly depending on the amount of the object, and the microwave can be utilized with high efficiency by keeping the treatment amount constant. In addition, by burning food waste in the combustion chamber, the drying chamber (3
Since the combustion gas in the combustion chamber (3b) is sucked into the a), the combustion chamber gas also heats the drying chamber garbage (1c) to accelerate the evaporation of water. This combustion gas comes into contact with vaporized water vapor in the drying chamber and enters a mixed state, and a vacuum pump (54) is used to cool the trap (52) from the drying chamber exhaust pipe (50).
Are sucked and exhausted into the
The vaporized water vapor in the drying chamber can be effectively discharged. The humidity sensor (46) in the drying chamber can detect the dry state to detect the dry state, and the control system can stop the microwave irradiation to prevent the excessive irradiation.
After being dried, oxygen is supplied to the food waste put in the incinerator (3b) under reduced pressure, and when ignited, the food waste self-combusts at a burning rate according to the oxygen supply amount. Since the combustion gas is sucked and exhausted from the communication pipe (49), the combustion rate can be controlled by controlling the oxygen supply amount. Combustion chamber temperature sensor (48)
Senses the temperature of the combustion chamber, detects the completion of combustion,
The control system stops the supply of oxygen to prevent excess supply.
As described above, by performing the simultaneous process by dividing the drying process and the combustion process, the incineration of food waste is efficiently performed, and the volume of incinerated ash can be significantly reduced. As described above, the combustion gas generated in the combustion chamber is sucked into the drying chamber and brought into a contact mixing state with the vaporized water vapor by the depressurized microwave heating.
From a), it is sucked into the cooling trap (52) and cooled in the cooling trap (52) together with the evaporative steam through the drying chamber exhaust pipe (50), and the evaporative steam is evaporated from the contact mixed state of the evaporative steam and the combustion gas. It cools and condenses into water droplets that collect on the bottom of the cooling trap (52). The combustion gas is cleaned of soot dust, smoke, harmful gas and odor contained in the combustion gas in the process of condensing the evaporated water vapor. Cooling trap (5
The combustion gas after cleaning, which is separated from water vapor and steam in 2), is transferred from the vacuum pump pipe (53) to the vacuum pump (54),
The exhaust gas is exhausted through the mist trap (55) and treated as combustion exhaust gas. The accumulated water in the cooling trap (52) can be appropriately discharged through the drain valve (56). The device of the present invention is
From the total amount of processed food waste, a fixed amount is sequentially dried and incinerated, so the drying chamber (3a) and combustion chamber (3b)
It is possible to downsize the incinerator body (31) constituting the. In addition, the incinerator body (31) is installed in the decompression chamber part (2), and the chamber (2
Since the gas in 3) is diluted and the convective heat transfer to the chamber material is reduced, the temperature rise in the decompression chamber section (2) is reduced, and the safety around the installation site of the incinerator is high.

[0005]

EXAMPLES Examples of the present invention will be described below. This incinerator is roughly divided into a food waste stock section (1) for storing food waste, a decompression chamber section (2) having a main body of an incinerator installed therein, and an incinerator section (3). From the total amount of trash, a certain amount of waste is sorted and sorted,
Drying and combustion incineration will be carried out to complete the incineration of all the garbage. The raw garbage stock part (1) is a stock hopper (11), a hopper lid (12), and a cutting shutter (13) that separates a predetermined amount from the stock garbage (1a) to obtain the next processed raw garbage (1b). And a shutter drive cylinder (14) for opening and closing this, and an object presence / absence confirmation sensor (15) for detecting the presence or absence of food waste to be processed. This food waste stock section (1) is connected to the decompression chamber section (2). ) Chamber inlet closed door (2
1) is installed on the upper part of the stock hopper (11) so that it also serves as the bottom door. The decompression chamber part (2) is
The chamber inlet closed door (21), the closed door opening / closing cylinder (22) for opening and closing the door, and the chamber (2
3) and an ash discharge door (24), the chamber inlet sealing door (21) and the ash discharge door (24) are closed, and a chamber exhaust pipe (51) provided on the side surface of the chamber (23).
From the chamber (2
3) The inside pressure is reduced. Chamber entrance closed door (21)
Is opened and closed with the function of the bottom door of the food waste stock section (1). In the incinerator body (31) in the chamber (23)
Are supported and installed on the incinerator legs (38), and the incinerator body (3
1), a drying chamber upper door (32) and an upper door opening / closing cylinder (33) for opening / closing thereof, an intermediate door (34) and an intermediate door opening / closing cylinder (35) for opening / closing thereof, and a combustion chamber lower door (36). A lower door opening / closing cylinder (37) is provided for opening and closing the upper chamber as a drying chamber (3a) and a lower chamber as a combustion chamber (3b).
The cutting shutter (13) is closed, and the garbage separated from the chamber inlet closed door (21) is used as the next processing cutting garbage (1b), and the intermediate door (34) of the incinerator body (31) is closed. , The drying chamber upper door (32) is opened, the chamber inlet closing door (21) is then opened, and the next-processed cut-out garbage (1b) is dropped into the drying chamber (3a) to form the drying chamber garbage (1c). , The drying chamber upper door (32) and the chamber inlet closing door (21) are closed. The raw garbage stock section (2) uses the cutting shutter (1
3) Open and let the stock garbage (1a) drop by its own weight.
The presence / absence confirmation sensor (15) confirms the presence / absence of the raw garbage (1b) to be processed next, and stands by. Vacuum pump (5
4) By the operation, the gas inside the decompression chamber part (2) is cooled by the cooling trap (5) from the chamber exhaust pipe (51).
2) and the vacuum pump pipe (53) are evacuated to reduce the pressure inside the decompression chamber section (2), and at the same time, the drying chamber (3
a) and the gas inside the combustion chamber (3b) through the communication space (49) from the drying chamber exhaust pipe (50) to the cooling trap (5).
2) and the vacuum pump pipe (53) to evacuate and reduce the pressure. The penetration portion of the chamber (23) side plate of the drying chamber exhaust pipe (50) is welded so as to keep airtightness. A microwave waveguide (42) and a magnetron (41) are provided for heating on the side surface of the drying chamber of the metal-made incinerator body (31), and a microwave is connected to the drying chamber connecting portion of the waveguide (42). Attach a waveguide lid (43) made of wave transparent material. Further, a metal net-like and air-permeable lid is connected to the connecting portion of the drying chamber exhaust pipe (50) and the connecting portion of the communicating pipe (49) to the exhaust pipe lid (45) and the communicating pipe lid (44), respectively. ) To install. When microwave oven food waste (1c) is heated under reduced pressure, moisture evaporation starts at a low temperature corresponding to the saturated vapor pressure due to the degree of vacuum, microwaves penetrate from the garbage surface to the inside, and microwave energy is directly transmitted. Since it is absorbed by water molecules and converted to heat, the internal vapor pressure is increased and the moisture inside the food waste is also transferred to the outside, and the moisture starts to evaporate at a low temperature corresponding to the saturated vapor pressure, and the higher the food waste temperature is. Evaporation is active. It is known that the efficiency of microwave heating varies greatly depending on the amount of the object, and the microwave can be utilized with high efficiency by keeping the treatment amount constant. The vaporized water vapor is discharged from the drying chamber exhaust pipe (50) to the cooling trap (52) by the operation of the vacuum pump (54). The humidity sensor (46) of the drying chamber (3a) senses the dry state of the drying chamber garbage (1c) to detect the drying based on the change in humidity, and then the intermediate door (34) is opened to dry the combustion chamber (3b). Drop the garbage afterwards,
The intermediate door (34) is closed to form the combustion chamber garbage (1d). A humidity sensor (46) and a control system control the irradiation of microwaves to prevent excessive irradiation. The raw garbage (1b) cut out from the raw garbage stock section (1) is dropped again into the drying chamber (3a) by the above-mentioned operation to form the drying chamber raw garbage (1c). As a result, the dry room garbage (1c) and the combustion room garbage (1d) are stored in the respective processing chambers, and thereafter, the drying process and the combustion incineration process are simultaneously advanced. Oxygen is supplied to the combustion chamber (3b) from the oxygen gas generator through the oxygen check valve (58) and the oxygen supply pipe (57) under reduced pressure, and the ignition burner (47) supplies the combustion chamber garbage ( 1d) is ignited, oxygen is supplied to cause the garbage to self-combust, and the combustion gas is evaporated by the vacuum pump (54) through the communication pipe (49) connecting the combustion chamber and the drying chamber to the drying chamber (3a). Exhaust pipe (5) with drying chamber
0) to the cooling trap (52). At this time, the inflow / exhaust of the combustion gas into the drying chamber (3a) becomes an air flow, and the evaporated water vapor in the drying chamber (3a) can be effectively discharged. Combustion chamber garbage (1d) in the combustion chamber (3b)
The combustion rate of can be controlled by controlling the oxygen supply.
The penetrating portion of the side plate of the chamber (23) of the oxygen supply pipe (57) is welded to maintain airtightness. The combustion state of the garbage in the combustion chamber is sensed by the temperature sensor (48), and after the completion of combustion is detected by the temperature change of the temperature sensor (48), the oxygen supply is stopped, and the combustion chamber lower door (3
6) is opened, and the incinerated food waste ash is dropped and stored in the ash receiving box (70). Then, the lower door of the combustion chamber (36) is closed to handle the next process. The ash receiving box (70) has a lower combustion chamber door (3) between the incinerator legs (38) at four corners supporting the incinerator (31).
Place it so that it is below 6). The evacuation speed capability of the vacuum pump (54) is selected to be sufficiently larger than the sum of the amount of evaporated water vapor in the drying chamber, the amount of oxygen supplied to the combustion chamber, and the amount of combustion gas generated, and the depressurized state during processing is maintained. By repeating the above-mentioned drying process and combustion process, when there is no food waste in the drying chamber (3a), that is, the food waste to be processed is sequentially dried and incinerated, and the last combustion chamber food waste (1d ) Is incinerated, the water valve (63) is opened in the drying chamber (3a), an appropriate amount of water is supplied from the water check valve (62) through the water supply pipe (61), and microwave heating is performed. The steam is generated in the drying chamber (3a) and is discharged from the drying chamber exhaust pipe (50) to the cooling trap (52) together with the combustion gas sucked in the drying chamber. The penetrating portion of the side plate of the chamber (23) of the water supply pipe (61) is welded so as to maintain airtightness. After incineration of all the garbage in the garbage stock section (1), the ash receiving box (7) containing the incinerated ash
0) is discharged from the ash discharge door (24) provided on the lower side surface of the chamber (23). In this way, by performing the simultaneous progress treatment by dividing the drying process and the combustion process, the incineration of food waste is efficiently performed and the volume of incinerated ash is remarkably reduced. As described above, the combustion gas generated in the combustion chamber is sucked into the drying chamber and brought into a contact mixing state with the vaporized water vapor generated by the reduced pressure microwave heating. While the combustion gas is cooled by the evaporative steam, the combustion gas is sucked into the cooling trap (52) together with the evaporative steam from the drying chamber exhaust pipe (50) and cooled,
The water vapor cools, condenses, and is separated into air and water to form water droplets, which accumulate at the bottom of the cooling trap. Drain valve (5
It can be appropriately discharged from 6). Since some plastics such as food containers may be mixed in the garbage, it is necessary to consider the cleaning of exhaust gas. The combustion gas is discharged from the drying chamber (3a) together with the vaporized water vapor generated by the reduced pressure microwave heating,
By cooling in the cooling trap (52), soot dust, smoke, harmful gas, and odor contained in the combustion gas are washed away in the process of condensation of evaporated water vapor. The combustion gas after cleaning is exhausted from the cooling trap (52) through the vacuum pump pipe (53), the vacuum pump (54) and the mist trap (55). The apparatus of the present invention separates a fixed amount of the total amount of the treated food waste into a fixed amount and sequentially performs the drying process and the incineration process. Therefore, the incinerator main body (3) that configures the drying chamber (3a) and the combustion chamber (3b).
1) can be miniaturized. In addition, the incinerator body (3
1) is installed in the decompression chamber part (2), and the decompression reduces the gas in the chamber (23) and reduces the convective heat transfer to the chamber material, so that the temperature rise in the decompression chamber part (2). It is reduced, the impact around the installation site of the incinerator is small, and the safety can be improved.

[0007]

Since the present invention is constructed as described above, it has the following effects. From the total amount of treated food waste, it is possible to sort by a fixed amount, and the drying treatment and the combustion incineration treatment can be performed sequentially, so that each of the drying treatment condition and the combustion incineration treatment condition can be optimally selected and efficiently, It is possible to stably incinerate food waste. The efficiency of microwave heating varies greatly depending on the dielectric loss coefficient of the object and its amount, but by setting the amount of treated garbage to a fixed amount, based on the average constituent material of garbage,
Energy loss can be reduced because high-efficiency irradiation conditions can be selected. When the raw garbage is dried by the reduced pressure microwave heating, the evaporation of water starts at a low temperature corresponding to the saturated vapor pressure due to the vacuum degree of the reduced pressure, and the higher the temperature of the raw garbage, the more vigorous the evaporation. Microwave energy penetrates into the garbage and is directly absorbed by water molecules and converted into heat.
By increasing the internal vapor pressure, the water inside the food waste is also transferred to the outside. Therefore, it is rapidly heated to the deep part of the garbage and can be rapidly dried at a low temperature. Since the combustion gas in the combustion chamber is exhausted through the drying chamber, there is a heating effect for the garbage in the drying chamber, and the inflow / outflow air flow of the combustion gas promotes the discharge of evaporated water vapor in the drying chamber. Combustion gas is sucked and discharged into a cooling wrap in a mixed state with vaporized steam, cooled in a cooling trap, and soot, smoke, harmful gas and odor contained in the combustion gas are washed in the process of condensation of vaporized steam. Then, after passing through the vacuum pump, the filter of the mist trap can be passed through to be cleaned and exhausted. Since garbage is burned sufficiently by incineration with oxygen, it has a large volume reduction effect. As the incinerator body can be miniaturized because it is separated and processed for each fixed amount, it is possible to miniaturize the incinerator as a whole. Since the incinerator body, which is the heat generating part, is installed in the decompression chamber part, the temperature of the surface of the decompression chamber part, which is the outer shell of the incinerator, can be kept low. The temperature of the surface of the decompression chamber is low, there is little influence on the surroundings of the installation location of the incinerator, and the incinerator with high safety can be provided.

[0008]

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a longitudinal cross section and a device configuration of a main part showing an embodiment of a reduced-pressure drying and incinerating apparatus for raw garbage of the present invention.

FIG. 2 is a vertical cross-sectional view showing an embodiment of a food waste stock section.

FIG. 3 is a vertical cross-sectional view showing an example of a decompression chamber section.

FIG. 4 is a configuration diagram showing a vertical cross-section of the incinerator body showing an embodiment of an incinerator unit and a device configuration.

[Explanation of symbols]

1 Garbage stock part 2 Decompression chamber part 3 Incinerator part 1a Stock garbage 1b Next processing cut out garbage 1c Drying room garbage 1d Combustion chamber garbage 1e Incineration ash 11 Stock hopper 12 Hopper lid 13 Cutting out shutter 14 Shutter drive cylinder 15 Presence or absence of objects Confirmation sensor 21 Chamber inlet closed door 22 Sealed door open / close cylinder 23 Chamber 24 Ash discharge door 3a Drying chamber 3b Combustion chamber 31 Incinerator body 32 Drying chamber upper door 33 Upper door opening / closing cylinder 34 Intermediate door 35 Intermediate door opening / closing cylinder 36 Incinerator chamber Lower door 37 Lower door opening / closing cylinder 38 Incinerator leg 41 Magnetron 42 Waveguide 43 Waveguide lid 44 Communication pipe lid 45 Exhaust pipe lid 46 Humidity sensor 47 Ignition burner 48 Temperature sensor 49 Communication pipe 50 Drying chamber exhaust pipe 51 Chamber exhaust Pipe 52 cooling trap 53 Vacuum pump pipe 54 vacuum pump 55 mist trap 56 drain valve 57 oxygen supply pipe 58 oxygen check valve 59 the oxygen gas generator 61 feed water pipe 62 water check valve 63 for water valve 70 ash receiving boxes

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location F25D 7/00 ZAB Z F26B 21/00 K

Claims (2)

[Claims] 1. A stock hopper (11), a hopper lid (12), a cutting shutter (13), and an object presence / absence confirmation sensor (15) as a raw garbage stock section (1),
It is installed in the upper part of the decompression chamber part (2), and the decompression chamber part (2) is provided with a chamber inlet closing door (21) and an ash discharging door (24), and the chamber inlet closing door (21).
Is used as the bottom door of the food waste stock section (1) and is divided by the cutting shutter (13) for the next processing cut out food waste (1b)
To the drying chamber (3a) of the incinerator body (31) of the incinerator unit (3) installed in the decompression chamber unit (2), the chamber inlet closing door (21) and the drying chamber upper door (32). Is opened and closed, and the vacuum pump (54) is operated to operate the vacuum pump pipe (53), the cooling trap (52), and the chamber exhaust pipe (51) through the decompression chamber section (2).
While reducing the internal pressure and the internal pressure of the drying chamber (3a) via the drying chamber exhaust pipe (50), the drying chamber garbage (1c)
The microwave of the magnetron (41) to the waveguide (42)
Via irradiation heating to evaporate water to dry, and after detecting the dry state from the humidity change of the humidity sensor (46) provided in the drying chamber, open the intermediate door (34) to open the drying chamber garbage (1c ) Is dropped into the combustion chamber (3b) to form a combustion chamber garbage (1d), the intermediate door (34) is closed, and the drying chamber (3
In step a), the raw garbage (1b) that has been subjected to the next process is put into the drying chamber garbage (1c) again to start drying, and at the same time, the combustion chamber (3b) is supplied with the oxygen supply pipe (57) from the oxygen gas generator (59). ) Via the ignition burner (47) to ignite the combustion chamber garbage (1d) to self-combust, and the combustion gas is a communication pipe (49) connecting the combustion chamber and the drying chamber.
Is sucked and exhausted to the drying chamber (3a) by means of a vacuum pump (54) together with water vapor evaporated in the drying chamber, and a cooling trap (52)
To the cooling trap (52), the combustion gas and vaporized water vapor are separated into water and vapor, and the combustion gas is exhausted through the vacuum pump pipe (53). After detecting the temperature change of the sensor (48), the lower door (36) of the combustion chamber is opened, and the incinerated food waste ash is dropped and stored in the ash receiving box (70). By repeating the above steps to incinerate the total amount of food waste in the food waste stock section (1), the garbage is discharged from the ash discharge door (24). 2. In the incinerator part (3) having a drying chamber (3a) and a combustion chamber (3b), the raw garbage is first dried in the drying chamber (3).
After being put into a) and dried, transferred into the combustion chamber (3b) and incinerated so that the next-treated raw garbage is sequentially stored in the drying chamber (3a) and dried, and then put into the combustion chamber (3b). Then, as a configuration in which the drying process and the combustion process are simultaneously processed,
When the dry room garbage (1c) to be treated in the dry room (3a) is exhausted, an appropriate amount of water can be supplied to the dry room (3a) through the water supply pipe (61), and the dry room is provided by the vacuum pump (54). Combustion gas produced by microwave heating by magnetron (41) while evaporating water while igniting and burning the combustion chamber garbage (1d) in the combustion chamber (3b) while supplying oxygen. Is sucked into the drying chamber (3a) from the communication pipe (49), and is discharged from the drying chamber exhaust pipe (50) to the cooling trap (52) together with the vaporized water vapor in the drying chamber (3a). A method for treating combustion exhaust gas, characterized in that vaporized water vapor is cooled and condensed to separate water and water, and combustion gas is exhausted by a vacuum pump (54).