JP2008196710A - Compact waste mixing, melting and solidifying device for asbestos, medical waste, general waste and the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a furnace of a compact and simplified structure, which performs at a high speed combustion melting processing of wastes such as asbestos, medical water and general waste. <P>SOLUTION: The secondary air is spirally introduced into a furnace from a furnace wall, radiation heat is collected to a central portion simultaneously with generation of vortex inside, and a combustion promotor (nitro series) is charged or inserted to the central portion to form a combustion melting atmosphere at the central portion. A heat-resisting tray is disposed just under the combustion melting atmosphere. A burner for main combustion is disposed on a part of a clearance between the heat-resisting tray and a main body. Oxygen is taken into the central portion of the spiral portion by atmospheric air, the waste is slowly stirred with the combustion additive, and a spot temperature rise part is formed by synergetic effect of oxygen and the additive, so that an organic substance is burned and melted, and an inorganic substance is melted in the area. Depending on the wastes, the waste may be heated up to its melting point by activating calory generated by the burner for main combustion. The molten matter is taken out from a discharge pipe and processed as a solid material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention has been widely used as a fireproof covering material for buildings, structures, etc. from the past several decades. There is currently no complete deciding factor because it is very expensive to dispose of. Therefore, the small melt solidification system invented this time first forms a cylindrical processing chamber (the cylindrical shape is a shape that is used to concentrate all of the radiant heat at the center of the cylindrical shape, and the material used for it is reflective efficiency) (In some cases, a process that emits far-infrared rays is also used.) Applying static pressure to the circumference from the circumference of the treatment chamber with air, the wall surface from the blowout port provided around the circumference The air is formed in the direction of rotation to protect the wall from the high-temperature combustion part in the center and oxygen combines with the oxide in the air blown into the wall to form water, carbon dioxide, air Protects refractories or refractory metals from oxidation from the high temperature zone of the combustion part as described above, and this phenomenon occurs continuously by continuously injecting the outside air, and the air that is excessively filled inside is similar to the above. A water pool is installed at the bottom of the exhaust port. , And its water pool static pressure, by a method accompanied the branched air perforated pipe and then the blower tube, sometimes air blow than water pool bottom. A structure that prevents micromicron dust from scattering into the atmosphere and flows from there to the flue gas combustion chamber, through which it is discharged from the exhaust port, a heat-resistant and corrosion-resistant steel pipe installed in the form of a honeycomb in the center of the exhaust port, or stainless steel System heat-resistant and corrosion-resistant steel pipes and ceramic pipes, etc., and the exhaust heat passes through the gaps to heat the pipes for heat exchange, and the outside air (atmosphere) required for main combustion is blowered while being heated, Uses a turbo blower, sirocco fan, multistage static pressure fan, axial fan, etc., and automatically adjusts the air flow static pressure by using an inverter etc. according to the combustion situation in the main combustion chamber installed inside it , Raise the internal main combustion chamber to the melting temperature (that is, the melting temperature of asbestos), insert an appropriate amount of combustion accelerator there, and suddenly raise the temperature of each external flame part in the center with the combustion accelerator. Best of is intended to solidify the molten instantly. The solidified asbestos molten stone is deposited as molten stone on the refractory tray provided at the lower part of the main combustion chamber in the furnace, and the lower refractory tray is discharged outside as a safe molten stone with a regular discharge gradient. Is done. A main combustion burner and a petroleum-based gas system were installed at an intermediate position between the heat-resistant tray and the internal air rotating layer, and a part of the exhaust port located between the fire-proof tray and the hearth was adjusted to the rotating airflow. The burner is set so that the combustion frame extends in the direction, and the top cover automatically slides at the tip of the burner while the main combustion burner is burning to protect the burner, and slides when the burner is stopped. It has a structure that protects the burner at the time of shutdown using heat-resistant and corrosion-resistant steel or main oxidation-resistant steel and super refractory bricks, ceramics, etc., and also prevents reverse flow of static pressure in the furnace against the burner at the same time, and main combustion Even when the burner is stopped, the temperature of the furnace can be raised to a certain condition by inserting combustible material into the furnace without a burner by introducing air blown in the circumferential direction from the furnace wall. At this time, in order to rapidly promote oxidation and increase the temperature in a spot manner, a combustion accelerator is inserted continuously or intermittently through an upper insertion port or a plurality or one of the previously provided accelerators from an automatic insertion port. The temperature around the combustion melting area is raised to a high temperature, and asbestos melting in the present invention has a problem of melting time of 1350 ° C. or more, so an accelerator, a main combustion burner, a combustion aid (wood pieces, combustible waste garbage) Etc. can be made into a stronger and safer melt. In addition, the combustion accelerator is administered to the main combustion part by any of the continuous, intermittent, and intermittent methods, and the solid state is instantly promoted from the asbestos-like state before melting. Will not be scattered. In order to enable continuous processing or batch processing under these conditions, air that also serves as cooling residual heat is attached to the furnace wall with a blower such as a multistage turbofan, sirocco fan, semi-sirocco fan, or turbofan. A cavity such as a supercharging zone is provided between the outer wall and the combustion chamber, and various blowers described above are selected in the cavity to use an appropriate one. While maintaining the static pressure of the cavity so that the air flow direction is constant and rotates on the inner wall side of the furnace, holes that are angled so that they can be inserted into the furnace are evenly formed on the inner wall, and the temperature around the main processing chamber rises By inserting a combustible material, that is, (oxidized) into the inside through the insertion port, the combustible material is caught in the central spiral band, and a combustion accelerator or the like is inserted there. This is a melting furnace in which most of the combustibles become ceramic-like, causing a rapid temperature rise, and the present invention uses a combustion accelerator and can raise the temperature of the main combustion part and the center of the swirl by the swirl phenomenon This is a big invention, and it has become possible to process even those that could not be burned and melted so far, and it has become possible to treat waste that requires high-temperature instantaneous combustion, such as medical waste. Although the heat exchange of waste heat is described above, waste heat can be used by passing water as a medium in the same way. At one end, combustion accelerators and nitro-based substances are used together, making the furnace cheap, and in order to protect the furnace, all the hot parts are inserted with the necessary air inside the furnace. Since the exhaust heat temperature rises with little temperature rise, the exhaust heat is utilized, and a blower that can take effective static pressure is selected for various parts of the cylindrical spiral secondary air layer, and the static pressure feed Passes through a wind duct or one or more heat-resistant and corrosion-resistant pipes for heat exchange, pressurizes and feeds into the hollow static pressure body inside the cylindrical furnace wall of this principle, and hot air enters the secondary air spiral flow area inside the furnace The layer may be recovered and heated as a support. It is possible to change to heat energy and rotational energy even in a small size, and it can be directly attached to the apparatus of the present invention, or the turbine for power generation can be directly driven using high-pressure steam or hot water extracted from the apparatus of the present invention, or a low-temperature medium can be used. It may be heated and indirectly driven. In any case, the present invention can be used as a small and simple melting energy-saving device, as well as medical waste and other items that require high-temperature melting treatment also enter the treated material and do not cause secondary pollution from high-temperature combustion treatment. Is an indispensable matter.

Conventionally, asbestos has been considered safe and easy to use, has excellent flame retardancy, and has been used to minimize damage at the time of occurrence such as fire, taking advantage of these characteristics. It has been proved that it is one of the roots, it is inevitable that its use can no longer be used, and it has been found that it is harmful to the health of those who are engaged in the manufacture of such products. The removal and disposal of objects that have been regulated in Japan and have been used in large numbers of structures and buildings until now has become a social issue. No such method has yet been found for disposal. As an intermediate method, a method of embedding in a plastic container and being buried in soil is considered as a promising candidate, but there are too many problems to allow. As for medical waste, there is a limit to how humans can pack and move in places where high temperature melting furnaces or electric furnaces, blast furnaces, etc. are supplementary, and in the unlikely event that they are contaminated in the middle. The current situation will be tough.

Problems to be solved by the invention

This principle is generally used as a basic structure because it is a low-priced and easy-to-carry melt processing device for asbestos, which is a simple social melting problem (semi-ceramic material, inorganic pollution-free). In general, the amount of calorie input depends on the amount of heat stored in the entire furnace, but in this case the cost is very high and it takes too much time to rise to a usable temperature, so the amount of fuel input is large. It was impossible to form a high temperature. In addition, there is no method that can be immediately processed at the place where it is socially performing a very dangerous act of packing and transporting medical waste. Considering these points, there is no simple melting furnace at present. Also, it is difficult to melt easily because a very high temperature is required from the situation of melting. In addition, a large amount of electric power is required, and as a result, the amount of carbon dioxide emission is increased, and there is a problem of how to solve this situation. In addition, there is a problem of how to use exhaust heat discharged when high-temperature combustion is performed due to energy problems. How to use these effectively is also an issue. The conventional incinerator system has a lot of ash, and depending on the object, it is ash with a mixture of heavy metals. Especially for fine particles of needle-like inorganic substances such as asbestos, there is a risk of causing a great deal of secondary contamination depending on the treatment method. In addition, in order to make it possible for general wastes to be processed including mixing, etc., these problems are captured.

Means for solving the problem

The present invention is a method using a high density, high-temperature combustion simple method of melting asbestos and the like, medical waste, general waste, which has been difficult in the past, and the solution is first from the furnace wall, the uniform combustion method in the furnace to the cylindrical swirl By adopting a combustion method, heat and oxygen drawn from air are concentrated and heated in the necessary point area in the center, and combustion accelerators, that is, nitro substances, are combined in a safe range, and further complete oxidation and combustion promotion are achieved. Suppresses adhesion of soot that tends to adhere to the inside of the plan, and also serves as cleaning in the furnace. A gap and a cavity are provided in the furnace body and combustion chamber wall, and a blower, multistage, single stage, sirocco fan Etc., form a hole that guides air in one direction in the cylindrical furnace, cools the inner furnace wall, creates a vortex inside the combustion furnace, Install a burner Only the atmosphere in the swirl is partially heated, and a nitro-based combustion accelerator is inserted into the swirl to increase the combustion speed and concentrate the heat centrally. Create as a high temperature area. The main combustion burner is fixed to the part, and the burner damper is opened when the burner is operated, and the burner damper is closed when the burner is stopped. The lower heat-resistant tray is structured to periodically discharge the internal combustion melt in the case of continuous processing, and the internal combustion melt is taken out from the upper inlet in the case of intermittent processing. A simple structure is adopted.

The invention's effect

The present invention is close to a place where waste is expected for asbestos treatment, which is a very social problem, or for long-distance transportation batch processing such as medical waste and miscellaneous waste that is expected to cause a large social problem in the future. It can be placed or mounted on a vehicle, moved or further miniaturized to a size that can be used directly in the medical field. Especially in asbestos processing, asbestos micron needle dust is scattered, so far this processing Although the method could not be established, it was obraded in the atmosphere, and it was possible to prevent scattering by spiral contact combustion. Similarly, medical waste or miscellaneous waste can be simultaneously melted and made into an oxidized inorganic substance. The structure of the furnace body is very simple and does not use the temperature rise of the whole furnace, but concentrates area combustion, concentrated radiation, radiant heat, etc. in one place. The rate is extremely high, and in addition to this, the use of combustion aids (nitro-based combustion accelerators) causes sudden oxidation and melting of objects that could not be considered before, and does not emit harmful dust into the atmosphere. Combined processing is possible at the same time, and by attaching a heat exchanger in front of the exhaust stack, it has extremely efficient combustion conditions, and the recovered heat can be used as an energy source for all purposes, and it can be said that there is no secondary pollution, Also, it is very important to create a clean environment that any waste can be burned and melted quickly, that is, instantly. Also, unlike normal rotary combustion, air is forcibly sent and rotated in the furnace, the center part has a low circularity, and the non-treated material burns and melts while rotating gently in the center of the spiral, so the exhaust is It was extremely purified, and evenly stirred to use as a combustion accelerator, and melted at the lower part of the center solidified and increased its weight, so it could fall down and make it easier to recover. It is a thing.

The present invention is a construction of the principle so that the treatment of asbestos, which is currently a problem as a social problem, can be performed safely and smoothly, one of which is artificially made fireproof insulation called asbestos, ie borobest or asbestos. Although it is a good substance, it has been proven to be a very dangerous thing for living organisms because it is medically carcinogenic and has the potential to cause other diseases. Various attempts are currently being made to solve these problems, but not all are sufficient. Therefore, by using the present invention, it is installed close to the root of the case while moving the place easily, so that this treatment can be processed simultaneously with high temperature instantaneous melting and general waste, etc. Combustion promoters are used inside the cylinder of the air layer, melted completely at high temperatures, and can be disposed of in a safe state as solids. It can be effectively recycled, such as being used for aggregates. This is not the case for medical waste, but it can be defined as final disposal because it is completely ceramicized. In any case, almost everything can be melted and made into a glass lock. Furthermore, it is possible to measure the overall energy savings by effectively using the heat energy that is discharged, so that the start-up and start-up are fast, and there is no generation of harmful dioxins even if chemical products are mixed. Also suitable for the environment.

Melting combustion furnace, cross-sectional view from the side, principle of the present invention, pressurized multistage blower is used to pressurize the atmosphere into the secondary air of the present invention, static pressure described in the figure, pressurized cavity layer, or static In the state where pressure is applied, this figure is installed to efficiently blow air into the furnace from the pressurized air injection port into the furnace, which can become secondary air (or main combustion air). The flow angle in FIG. 3 indicates that the blowing angle is blown in the circumferential direction and the direction along the wall surface so that the inner wall surface can withstand high temperatures, and a combustion auxiliary agent injection nozzle guided into the furnace, and An oxygen injection nozzle is provided, and the spiral central portion is raised to a high temperature, and the principle for melting is described as an example. At the time when the principle of the present invention is described as an example of the main body, the structure of the main body, etc. are easily described so that the main part can be seen in the vicinity of the exhaust stack, and the main part is shown as a view from the back, with the description and description is there. The combustion chamber of this principle and its air or gas flow are easy to understand and are indicated by arrows, and the pressurized air insertion port is shown in the sectional view seen from the side of FIG. The position of the protection damper at high temperature of the main combustion burner is clearly described, and the static pressure of the secondary air, the pressurized injection direction, and the like are also indicated by arrows.

Explanation of symbols

(1). Main combustion burner blower and burner (2). Pressurized multistage blower (3). High temperature heat exchanger (4). Auxiliary combustion agent injection nozzle (5). Ceramic oxygen injection nozzle (6). Pressurized air injection port (7). Pressurized air cavity layer

Claims (6)

In order to protect the main combustion burner while using a nitro-based combustion accelerator as a combustor, use a method such as installing a heat-resistant, corrosion-resistant damper, etc. when the burner is stopped. Oxygen emitted from the water may be supplied in excess. Collect exhaust heat and furnace wall heat, obtain heat sources such as boiler heating, power generation and hot water, and pass on to others. Form a swirl belt of air in the furnace to protect the furnace wall and create a swirl in the furnace to stir the combustion products. Use an inverter for the blower, and adjust the size of the air layer belt in the furnace, the speed of the spiral, and the amount of air. To burn and solidify asbestos or medical waste and harmful substances such as general combustible waste in the apparatus of the present invention. A water pool is provided under the bottom exhaust gate to prevent dust scattering and to form a micron dust collection water pool and water screen, etc., using a circulation system in the vessel and incorporating a structure to collect waste heat. At the same time, when the exhaust gas shrinks, use an electrostatic dust collection system etc. to prevent air pollution for the generated fine dust.

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