JP3032828U - Waste treatment equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To protect an incinerator from high temperatures and to obtain high combustion efficiency, and to solve the conventional problems of landfill treatment of human dung and sludge, the problem of pollution such as air pollution, To solve the problem of inhabitants around the waste and the problem of wastewater treatment due to bad smell and environmental degradation. Kind Code: A1 A combustion air supply means for blowing up waste to be incinerated into an incinerator in a fountain shape above a hearth.
A combustion means 4 for spraying heavy oil onto the blown up incineration waste and igniting and burning, and a high flow velocity of an air curtain-shaped tornado swirl structure along the incinerator inner wall so as to surround the blown up incineration waste. It is configured to have the air blowing means 5 for blowing air.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a waste treatment device that mixes and incinerates metal waste, sludge, waste liquid, waste oil, waste plastics, wood chips, dust, etc. together with excrement waste containing water such as human feces and sludge by high temperature incineration. is there.

[0002]

[Prior art]

 Currently, most of the conventional waste treatment facilities are incineration treatment facilities, and the incineration treatment facilities are so-called intermediate treatment facilities along with each facility such as coarse waste treatment, high-speed composting treatment, and sorting and recycling. It is located in. In addition, incinerators are roughly divided into, for example, stoker type and fluidized bed type combustion furnaces, and in principle each combustion furnace is equipped with combustion gas cooling equipment, exhaust gas treatment equipment, and ventilation equipment. In recent years, wastes, especially human feces, have been disposed of by landfill or ocean dumping. However, it has been decided that all these disposal methods will be discontinued in a few years in accordance with laws and regulations. In this way, the Recycling Law and the revised Waste Disposal Law are aimed at building a recycling-oriented society in order to reduce the amount of waste based on proper waste disposal and to extend the life of landfill sites through resource recovery and to make effective use of recycled resources. As a result of the enforcement of the regulations, many local governments across the country are attempting to revise the cleaning conditions so far.

[0003]

[Problems to be solved by the invention]

 In recent years, the problem of securing land for waste disposal, the problem of landfill disposal, the problem of pollution such as air pollution at the waste incineration plant, the problem of residents around the waste due to bad odors and environmental degradation, sewage Various waste treatment problems such as wastewater treatment problems have been raised. Moreover, in the conventional incinerator, the thermal efficiency is too low to burn waste with high water content, such as sludge and sludge, and human dung at the same time, resulting in incomplete combustion and dioxins due to the reduction of thermal power. There was a risk that toxic gas such as In addition, when high temperature combustion is performed with fuel such as heavy oil to improve combustion efficiency, new strains such as thermal strain damage and overheat burning may be given to the incinerator itself, and thermal durability may be reduced. I had a problem.

Therefore, the present invention has been made in view of the above existing circumstances, and protects the incinerator from high temperatures, obtains high combustion efficiency, and completely burns the incineration waste. There are various problems such as the problem of conventional landfill treatment of human feces, sludge, etc., the problem of pollution such as air pollution, the problem of residents in the area around the waste due to bad odor and environmental deterioration, the problem of wastewater treatment. The object of the present invention is to provide an improved waste treatment device that solves various problems of waste treatment at once.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, metal waste, sludge, waste liquid, waste oil, waste plastic, wood chips, dust, etc. are incinerated at high temperature along with waste containing water such as human feces and sludge. In a waste treatment device for mixed incineration, the combustion air supply means connected to the agitation fan to blow up the incinerated waste that has been put into the incinerator upward from the center of the hearth in the form of a fountain, and the above-mentioned blown up. Combustion means for injecting fuel to incinerate waste by burning and burning it, and surrounding the blown up incinerator waste An air jet that provides high-velocity airflow with an air curtain-like tornado revolving structure along the inner wall of the incinerator It is characterized by having means.

Further, the air ejecting means may be provided with an air flow rate adjusting means for controlling the air volume along the inner wall of the incinerator, or the combustion means may be provided from above the inside of the air curtain by the air ejecting means. Fuel is sprayed to the blown up waste to be burned and ignited, or fuel is blown up with the combustion air supply means into a fountain and ignited and burned together with the blown up waste to be burned. can do. Further, the incinerator may be a stoker furnace, a kiln furnace, a fluidized bed furnace, a rotary furnace, a staged grate furnace, or the like.

According to the waste treatment device of the present invention, the ejection of the pressurized air by the air ejection means causes a so-called air curtain, which is a tornado-shaped wall of air, and the air pressure at the center of the tornado is low. The flame burned in the lower part of the incinerator is sucked into the upper part. In addition, this air curtain-shaped tornado revolving structure blows the heat conducted by the heat convection to the inner wall of the incinerator during high temperature combustion of the incineration waste based on the cooperation between the combustion air supply means and the combustion means. It can be shielded, the inner wall of the incinerator is protected from high temperatures without being directly exposed to high temperature conditions, and the thermal insulation effect prevents heat energy from being dissipated to the surroundings of the air curtain. High combustion efficiency can be obtained and complete combustion of waste materials to be incinerated. Then, the air flow rate adjusting means freely changes and controls the effective range of the air curtain, and controls the fluctuation of the burning speed due to the temperature fluctuation based on the thermal forced convection of the combustion section. As a result, the problem of securing land for waste treatment, the problem of landfill disposal, the problem of pollution such as air pollution at the waste incineration plant, the problem of residents in the area surrounding the waste due to bad odors and environmental degradation, and sewage Various waste treatment problems such as wastewater treatment problems can be solved, which will contribute to local environmental protection.

[0008]

[Embodiment of the invention]

 BEST MODE FOR CARRYING OUT THE INVENTION In the following, one embodiment of the present invention will be described with reference to the drawings, in which reference numeral 1 indicates mainly excrement waste having a high water content, such as human feces and sludge, as well as metals, sludge and waste liquid. , Waste oil, waste plastics, wood chips, dust, etc. is a waste treatment apparatus that mixes and incinerates by high-temperature incineration at about 1300 ° C. or higher. The waste treatment apparatus 1 is, for example, as shown in FIG. A waste metal crusher (not shown) is used to crush the waste to a desired size, and a part of the ferrous metal is removed from this crushed waste for reuse. The processed waste fuel produced by (not shown) is put into the incinerator 2 together with human feces, sludge, etc., which have been conventionally landfilled or disposed of in the ocean, and burned at high temperature. Needless to say, the waste treatment device 1 may be an incinerator dedicated to excrement waste that merely incinerates only human feces and sludge. Then, the waste treatment device 1 includes a combustion air supply means 3 connected to a stirring blower or the like so as to forcibly blow up the incineration waste that has been put into the incinerator 2 above the hearth floor in the form of a fountain. Combustion means 4 for spraying fuel such as heavy oil and igniting combustion on the blown up waste to be incinerated, and to surround the blown up waste to be incinerated. It is supposed to have an air jetting means 5 for providing high-velocity airflow.

Above the incinerator 2, a steam turbine 6 for steam production and generator operation, and an air-cooled condenser 7 for converting the steam into water to be reused in the incinerator 2 are provided. 8, a spray dryer 9 for spraying a lime reagent to the combustion gas generated by the incinerator 2 to scatter the acidic gas components, a dust collector 10 for removing ash dust, and an air pollution control system for removing fine particles. A system structure comprising an exhaust gas treatment means 12 equipped with a fly ash stabilizer 11 and the like, and a continuous exhaust gas monitor means 13 installed inside the chimney so as to record the level of a control compound in the fly ash by the exhaust gas treatment means 12 It has a special configuration.

As shown in FIG. 2, the incinerator 2 burns the processed waste fuel generated by the ferrous metal separation and recovery means 4 together with human feces and sludge at a high temperature. For example, a stoker furnace combustion device, A kiln furnace type combustion device, a fluidized bed type combustion device, a rotary furnace type combustion device, a staircase grate furnace type combustion device, or the like can be used as an incinerator 2. A boiler chamber 2A that allows reuse of residual heat together with control is provided, and the uppermost portion of the boiler chamber 2A is connected to the power generation means 8 via a pipe 16. In this incinerator 2, for example, refractory bricks are stacked in a substantially cylindrical shape to form a furnace body 2B, and a water cooling pipe 2C is wound around the combustion chamber in a substantially spiral shape. Further, the incinerator 2 may be formed into a double wall structure made of steel, and cooling water may be circulated between the wall surfaces.

At the center of the hearth of the incinerator 2, the burned waste is agitated and floated in the form of a fountain by a rotary fan, agitation blower, a compressor for highly compressed air, etc. The combustion air supply means 3 for forming the above is disposed, and above the inner wall surface of the incinerator 2 of a small diameter for injecting at a high flow rate of, for example, about 50 m / s or more toward the center of the combustion chamber. The air jetting means 5 of a plurality of jet nozzle jet type or the like is arranged. Specifically, as shown in FIG. 3, the jetting direction of the small diameter nozzle is set to the horizontal direction and the angle with the center of the combustion chamber is an acute angle. The invention is not limited to such a configuration. In short, the so-called air curtain P structure, in which the jet of pressurized air by the air jetting means 5 is a tornado-shaped air wall so as to swirl on a virtual circle along the inner wall peripheral surface of the incinerator 2, Since the center of the tornado causes a so-called blow-through phenomenon in which the air pressure is a negative pressure state, a flame burned in the lower part of the incinerator 2 is sucked into the upper part. Therefore, if air is blown at a high flow velocity so as to form an air curtain P having a substantially tornado revolving structure with a predetermined air pressure, the inner wall surface of the incinerator 2 is not directly exposed to a high temperature state, and the central portion of the incinerator 2 is not exposed. Thus, the so-called adiabatic confinement effect of the combustion part, which is a stable combustion effect of waste, is maintained.

Although not shown, the incinerator 2 is similar to a conventional fluidized bed incinerator in that a primary combustion air supply hole for supplying primary air for waste combustion from the bottom of the furnace and a combustion gas It is also possible to use a secondary combustion air supply hole that completely burns the unburned portion of the second combustion air supply hole, and also use the secondary combustion air supply hole as the air jetting means 5. Furthermore, by injecting secondary air into the incinerator 2 alternately through a large diameter nozzle for low velocity secondary air ejection and a small diameter nozzle for high velocity secondary air ejection, the air curtain is operated. -Shaped secondary air layer may be formed.

The air ejecting means 5 is provided with an air flow rate adjusting means 14 such as an air flow rate adjusting valve or the like for freely changing and controlling the effective range of the air curtain P, which is based on the thermally controlled convection of the combustion section. It is designed to control the fluctuation of the combustion speed due to the temperature fluctuation. In addition, the combustion means 4 is a high-speed spraying device arranged above the inside of the air curtain P by the air injection means 5, for example, a well-known oil that uses a hydraulic injection valve to inject fuel at a higher speed than the orifice by pressure. A burner mechanism or the like is used to spray fuel such as heavy oil into the atomized waste that has been blown up in the form of atomized mist, and burn it inside an air curtain P via an ignition device (not shown). Has been done. The fuel such as heavy oil may be directly blown up in the form of a fountain by the combustion air supply unit 3 together with the incinerated waste to be blown up and burned inside the air curtain P through an ignition device. In this boiler room 2A, human dung floats in the air together with sludge and is burned at a high temperature of about 1300 ° C or higher, and the human dung ash and sludge ash are melted together and transferred from the grate at the bottom of the furnace to a conveyor for transportation. Dropped on 15 and transported.

The power generation means 8 recovers thermal energy generated by the incinerator 2 to the steam turbine 6 side through the pipe 16 and causes the power generator 6 A to generate power through the steam turbine 6. Also, an air-cooled condenser 7 is connected between the steam turbine 6 and the side surface of the grate at the bottom of the boiler chamber 2A of the incinerator 2 via a conduit 17 so that the steam can be reused in the boiler chamber 2A. It is supposed to be changed to water.

The dust collector 10 constituting the exhaust gas treatment means 12 employs an electric dust collector such as a fiber filter attached to the dust collecting electrode plate by Coulomb force. This is a space in which discharge electrodes that generate corona discharge by DC high voltage electricity and dust collecting electrodes are arranged alternately. When exhaust gas at about 300 ° C passes through this discharge space, dust particles in the gas Are charged and adhere to the dust collecting electrode plate by Coulomb force. The fly ash stabilizer 11 that stabilizes the fly ash from the dust collector 10 by removing fine particles by the air pollution control system is prevented from scattering toxic substances into the atmosphere or the earth.

The continuous exhaust gas monitoring means 13 records the level of the control compound in the fly ash discharged from the chimney, and always matches it with clean air of standard quality.

[0017]

[Effect of the invention]

 The present invention is configured as described above, and in particular, it is possible to shield the heat conduction due to the heat convection to the inner wall of the incinerator by the forced air blowing of the tornado revolving structure of the air curtain, and protect the incinerator from high temperature. At the same time, due to the adiabatic confinement effect that prevents the dissipation of heat energy around the air curtain, high combustion efficiency can be obtained inside the air curtain, and the incineration waste can be completely burned, resulting in conventional air pollution. It has an excellent effect that it can solve various waste disposal problems such as pollution problems such as pollution problems, resident problems in the area around the waste due to bad odors and environmental deterioration, and wastewater wastewater treatment problems.

[Brief description of the drawings]

FIG. 1 is a system conceptual diagram of a waste treatment device according to the present invention.

FIG. 2 is an enlarged conceptual diagram showing an incineration unit of the waste disposal apparatus.

FIG. 3 is a conceptual diagram showing a blowing state of air blowing means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Waste treatment apparatus 2 ... Incinerator 3 ... Combustion air supply means 4 ... Combustion means 5 ... Air ejection means 12 ... Exhaust gas treatment means 13 ... Continuous exhaust monitoring means 14 ... Ventilation amount adjustment means P ... Air curtain

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location F23G 5/44 ZAB F23G 5/44 ZABG 5/46 ZAB 5/46 ZABB F23J 15/00 ZAB F23J 15 / 00 ZABJ

Claims (5)

[Utility model registration claims] Claims 1. Along with waste containing water such as human waste and sludge, metals, sludge, waste liquid, waste oil, waste plastic,
In a waste disposal system that mixes and incinerates wood chips, trash, etc. by high-temperature incineration, the combustion air supply connected to the agitated blower so that the incinerated waste put into the incinerator is blown up like a fountain from the center of the hearth. Means, a combustion means for spraying and igniting fuel on the blown-up incineration waste, and a high flow velocity of an air curtain-shaped tornado swirl structure along the incinerator inner wall so as to surround the blown-up incineration waste. A waste treatment apparatus comprising air blowing means for blowing air. 2. The waste treatment apparatus according to claim 1, wherein said air blowing means has a blowing air amount adjusting means for controlling an air volume along an inner wall of the incinerator. 3. The combustion device according to claim 1, wherein the combustion device sprays the fuel to the incinerated waste blown up from above the inside of the air curtain by the air blowing device in the form of a spray and ignites and burns the fuel. Waste treatment equipment. 4. The waste treatment apparatus according to claim 1, wherein the combustion unit blows up the fuel together with the incinerated waste to be blown up into a fountain by the combustion air supply unit and ignites the fuel. 5. The incinerator comprises a stoker furnace, a kiln furnace,
2. The waste treatment apparatus according to claim 1, wherein the apparatus is any one of a fluidized bed furnace, a rotary furnace, a step grate furnace, and the like.