JPH0225618A - Refuse incinerator - Google Patents

Abstract

PURPOSE:To prevent unburnt gas from being discharged by a method wherein a hollow part partitioned by a porous member is arranged, the porous member has an air feeding hole acting as a combustion air hole and a slogging preventing air hole, a heater is arranged and then an unburnt substance burning device is connected to a gas discharging side. CONSTITUTION:Refuse 2 fed into a refuse incinerator 1 are ignited by an ignition torch fuel 3 and its combustion is started. Gas and vapor 5 discharged from the refuse incinerator 1 are fed to an unburnt substance burning device 6. The unburnt substance burning device 6 has alternative openings so as to divided a fore part and aft part of the hollow part A and to enable passage through a zig-zag path, a plurality of porous members 22 of metallic net or ceramic foam and the like are provided, air 8 is supplied to the air feeding hole 23 for combustion and preventing of clogging. Fuel 7 is supplied to a burner 24 arranged at a hollow part A, the fuel 24 is supplied in case that a temperature of atmosphere is low in respect to a combustion temperature so as to perform a combustion and its temperature is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a waste incinerator for use in processing garbage generated from homes, cities, factories, etc., processing waste rubber, and processing wastewater and wastewater by combustion.

[Conventional technology]

In conventional garbage incinerators, combustion exhaust gas is emitted with smoke, odors, etc. remaining intact or partially. In addition, when trying to eliminate smoke and odors, large amounts of air and fuel were pumped into the garbage and incinerators, resulting in low efficiency, large equipment, and high processing costs.

[The problem that the invention attempts to solve]

In particular, garbage with a high moisture content, such as food waste, requires a drying and combustion process, but when drying in the incinerator, organic components were discharged out of the incinerator along with steam and gas without being burned and decomposed. .

High calorific value waste such as waste rubber requires a large amount of combustion air, but the air supplied to the incinerator alone is insufficient in quantity, and even if enough air is supplied, even more unburned gas will be generated. was generated and was being discharged outside the furnace as smoke and odor.

In order to burn these unburned components, the amount of air, the temperature of the atmosphere, and the residence time required for combustion are required. The reason why unburned matter is produced is because these conditions are not sufficient.

The present invention aims to provide a small-sized garbage incinerator that satisfies the above-mentioned conditions for burning unburned gas and prevents the discharge of unburned gas.

[Means to solve the problem]

The present invention has solved the above-mentioned problem, and consists of a porous material such as a wire mesh or ceramic foam that partitions the front and back of a hollow part surrounded by the side wall and the same side wall so that the openings are alternately located on different sides. an air injection hole for injecting air into the porous body for both combustion and clogging prevention purposes, and a burner or electric heater provided in a hollow section separated from the front and back by the porous body. The present invention relates to a waste incinerator characterized in that an unburned waste incinerator equipped with a heating device such as the above is connected to the combustion gas discharge side of a waste incinerator.

[Effect]

In an unburned waste incinerator, fine particles of unburned components such as smoke, odor, and soot are captured on the surface or inside of a porous body.

Since these captured particles effectively come into contact with air supplied from inside the porous body through the air injection hole, these unburned components can be completely combusted with the minimum necessary amount of air. At 9 o'clock, the atmospheric temperature inside the unburned waste incineration device decreases, and the temperature is raised by the heating device inside the hollow part. In order to prevent clogging of the porous body, air is appropriately injected from inside the porous body through the air injection hole to release the clogged fine particles into the atmosphere. In this way, the combustion temperature, the amount of air, and the residence time of unburned components in the device are maintained appropriately, so that the unburned components can be completely combusted and the exhaust gas can be purified using a small device.

〔Example〕

FIG. 1 is a system diagram of an embodiment of the garbage incinerator of the present invention. 1 is a garbage incinerator, 2 is garbage to be thrown into the incinerator,
3 is the fuel supplied to the ignition torch provided in the incinerator, 4 is the air supplied to the incinerator, 5 is the gas and steam discharged from the incinerator, and 6 is the inflow of the gas and steam An unburned waste incineration device, 7 is fuel supplied to the device 6,
8 is air supplied to the device 6, 9 is purified air and steam discharged from the device 6, 10 is a heat recovery boiler into which the air and steam flows, ] 1 is generated by the recovered heat 12 is purified air and water discharged outside the system.

In the above device, the garbage 2 put into the garbage incinerator 1 starts to burn by igniting the ignition torch fuel 3, and the garbage 2 that has enough calorific value to self-combust will self-combust, and the garbage 2 that does not have enough heat to self-combust will be assisted by the ignition torch fuel 3. to continue combustion.

Preheating may be performed using waste heat from the outlet of the garbage incinerator.

The gas and steam 5 discharged from the garbage incinerator 1 are usually not completely burnt out, so they contain smoke and odor.
It cannot be released directly into the atmosphere. Therefore, this gas and steam 5 are led to the unburned matter incinerator 6, where the unburned matter is completely combusted, and then enters the boiler 10.

Fuel 7 and air 8 are supplied to the unburnt incineration device 6 . Here, the heat energy of the completely purified air and steam 9 is recovered in a boiler 10, and the generated steam 11
will be used separately and effectively. Purified air and water are discharged from the waste incinerator of this embodiment to the outside of the system.

FIG. 2 is a sectional view of the unburned waste incineration device f6 in FIG. 1. Reference numeral 21 denotes a fireproof insulation material constituting the side wall of the unburned waste incineration device, and 22 a fireproof insulation material that partitions the front and back of the hollow part A surrounded by the fireproof insulation material, and a part of the gas avoids the porous body in a zigzag pattern. Arrange the openings alternately so that they can be passed through in the route,
A plurality of porous bodies such as wire mesh or ceramic foam are provided before and after the hollow part A, 2τ is the opening, and 23
8 is an air injection hole provided inside the porous body, which serves both to inject the air necessary to burn unburned components and to blow air to prevent clogging. This is the air supplied to the injection hole. 24 is the hollow part A
K is a burner provided and fuel 7 is supplied. This is because when the ambient temperature is lower than the combustion temperature, the fuel 24
This is to increase the temperature by supplying and combusting it. unburned smoke contained in the gas and steam 5 flowing into the device;
Fine particles such as odors and soot are captured on the surface or inside the porous body, and are completely burned and eliminated by effectively contacting the air supplied from inside the porous body through the air injection hole. The device leaves air and steam 9 completely purified in this way. Note that an electric heater may be provided as a replacement for the burner 24. In addition, in order to prevent clogging of the porous body, air is appropriately blown out from inside the porous body through the air injection hole to release the fine particles trapped in the porous body into the atmosphere.

As detailed above, in the garbage incinerator of this embodiment, unburned particulates such as smoke, odor, soot, etc. captured in the porous body, and unburned particulates such as smoke, odor, and soot are supplied from inside the porous body through the air injection hole. Since there is good contact with air, the unburned particulates can be completely combusted with the minimum necessary amount of air. Therefore, compared to conventional methods, exhaust gas can be purified with a smaller device.

〔Effect of the invention〕

The garbage incinerator of the present invention has a hollow section partitioned by a porous body, and an air injection hole is provided in the porous body for injecting air for both combustion and clogging prevention, Furthermore, by connecting an unburned waste incinerator equipped with a heating device in the hollow part to the gas discharge side of the waste incinerator, smoke, odor, soot, etc. are captured by the porous body and completely combusted by the injected air. By doing so, the waste incineration apparatus of the present invention is made compact, and the air and water discharged are purified, thereby preventing incineration, odor, soot, etc. from being discharged.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the unburned waste incineration apparatus shown in FIG. 1. 1... Garbage incinerator, 2... Garbage, 3- Fuel for ignition torch, 4... Air, 5... Gas and steam discharged from the garbage incinerator, 6... Unburned matter. Incinerator, 7... Fuel, 8... Air, 9... Purified air and steam, 10... Heat recovery boiler, 1
DESCRIPTION OF SYMBOLS 1... Steam, 12... Purified air and water, 21... Fireproof insulation material for side wall, 22... Porous body,
22'...Opening of porous body, 23...Air inflow hole, 24...-Burner. shoulder 1 zusuku 2

Claims (1)

[Claims] A side wall, a porous body such as a wire mesh or ceramic foam that partitions the front and back of a hollow area surrounded by the side wall so that the openings are alternately located on different sides, and combustion within the same porous body. The container is equipped with an air injection hole for injecting air for both purpose and prevention of clogging, and a heating device such as a burner or an electric heater provided in the hollow part separated from the front and back by the porous body. A garbage incinerator characterized in that a combustion incinerator is connected to a combustion gas discharge side of a garbage incinerator.