KR102232235B1 - treatment apparatus for recycling of waste - Google Patents

Abstract

The present invention relates to a non-combustible waste recycling treatment apparatus, and more particularly, to a waste recycling treatment apparatus capable of recycling non-combustible waste generated in various industrial sites as useful construction resources.
The non-combustible waste recycling treatment apparatus of the present invention includes a waste storage tank in which non-flammable powder waste is stored, a cement storage tank in which cement is stored, a water storage tank in which water is stored, and an additive storage tank in which additives are stored, and waste stored in the waste storage tank. A pretreatment unit that improves its properties by chemical or physical treatment, at least one of cement stored in the cement storage tank, water stored in the water storage tank, and additives stored in the additive storage tank, and the waste passing through the pretreatment unit are introduced into the interior. And a blender to be mixed and a molding unit for molding and firing the mixture discharged from the blender into a predetermined shape.

Description

Incombustible waste recycling treatment apparatus TECHNICAL FIELD

The present invention relates to a non-combustible waste recycling treatment apparatus, and more particularly, to a waste recycling treatment apparatus capable of recycling non-combustible waste generated in various industrial sites as useful resources.

The treatment of industrial waste that is unavoidable in industrial sites has emerged as a major social problem as the industry grows due to industrialization and increased interest in the environment.

Safe disposal of industrial waste is very important for environmental preservation, and if industrial waste is not properly disposed of, industrial activity itself may become difficult. Basically, the principle of industrial waste treatment is to minimize the consumption of resources by efficiently using resources, and furthermore, it can be said to protect nature and humans by minimizing discarded resources and disposing them safely.

Industrial waste treatment methods generally used include incineration and landfill.

However, the incineration method generates a lot of pollutants such as dioxin, which causes serious disturbances to the natural environment and residential environment around the incineration plant, as well as frequent complaints. In addition, the incineration method is not suitable as a treatment method for various non-combustible wastes such as construction waste generated at construction sites, metal dust generated during metal processing, and sludge generated during water treatment. In addition, the method of landfilling is not easy to secure a landfill, and this also has a problem of damaging the environment such as soil pollution.

Therefore, a method of recycling waste generated in industrial sites as construction materials such as aggregates has been studied for a long time.

1. Republic of Korea Patent Registration No. 10-0797297: Slag for replacing fine concrete aggregate and a concrete composition with excellent durability including the same 2. Republic of Korea Patent Registration No. 10-1222076: Concrete composition containing blast furnace ingot slag aggregate

The present invention was created to improve the above problems, and an object thereof is to provide a waste recycling treatment apparatus capable of recycling non-combustible wastes generated in various industrial sites as useful resources.

The non-combustible waste recycling treatment apparatus of the present invention for achieving the above object includes a storage unit including a waste storage tank in which non-combustible waste is stored, a cement storage tank in which cement is stored, a water storage tank in which water is stored, and an additive storage tank in which additives are stored. ; A pretreatment unit for improving properties by chemically or physically treating the waste stored in the waste storage tank; A blender in which at least one of cement stored in the cement storage tank, water stored in the water storage tank, and additives stored in the additive storage tank, and waste passing through the pretreatment unit are introduced into and mixed; It includes; a molding unit for molding and sintering the mixture discharged from the blender into a predetermined shape.

The pretreatment unit includes a pair of first and second intermediate hoppers into which waste stored in the waste storage tank is introduced, a first mixing chamber in which waste discharged from the first intermediate hopper is introduced and stirred, and discharged from the second intermediate hopper. And a second mixing chamber in which waste is introduced and is alternately stirred with the first mixing chamber, and a treatment agent supply unit for selectively supplying a treatment agent to one of the first mixing chamber and the second mixing chamber.

The pretreatment unit further includes a drying kiln for drying waste discharged from the first and second mixing chambers, a cooler for cooling the wastes passing through the drying kiln, and a buffer tank through which the wastes passed through the cooler flow into the interior. Equipped.

The molding unit includes an extruder for molding the mixture discharged from the mixer into granules, and a firing kiln for sintering the granular molded body discharged from the extruder.

As described above, the present invention can recycle industrial wastes generated in various industrial sites as useful resources.

In addition, the present invention has the advantage of utilizing various kinds of wastes by being configured to stabilize or neutralize wastes by chemically or physically treating them.

1 is a schematic configuration diagram of a waste recycling treatment apparatus according to an example of the present invention,
2 is a plan view of the waste recycling treatment apparatus applied to FIG. 1,
3 is a cross-sectional view showing a main part of a waste recycling treatment apparatus according to another example of the present invention.

Hereinafter, an apparatus for recycling non-combustible waste according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a waste recycling treatment apparatus according to an example of the present invention largely includes a storage unit, a pretreatment unit, a mixer, and a molding unit.

The storage unit consists of a waste storage tank (1), a cement storage tank (3), a water storage tank (5), and an additive storage tank (7).

Wastes generated from various industrial sites are stored in the waste storage tank (1). The waste applicable to the present invention is non-combustible industrial waste. For example, construction waste, metal waste containing metal, sewage sludge, stone powder, etc. may be mentioned.

Construction waste includes various types of waste generated at construction sites such as waste concrete and waste aggregate.

In addition, metal waste may include metal-containing dust or slag. The dust may be aluminum waste dust or carbon waste dust. Aluminum waste dust is obtained by collecting dust generated from a melting furnace that dissolves aluminum through a dust collector. Typically, a dust collector is installed in an interior where an aluminum melting furnace is provided to remove dust or indoor dust generated during the melting process of aluminum. The aluminum waste dust collected in the dust collector contains various foreign substances such as dust, aluminum (Al) fine particles, and aluminum oxide (Al ₂ O ₃ ) fine particles. Waste carbon dust is obtained by pouring molten metal into a mold and collecting dust generated during casting through a dust collector. The carbon waste dust collected in the dust collector contains various foreign substances such as dust, metal oxides, and carbon.

Slag is generated on the molten metal surface of the melting furnace. Aluminum slag can be used as a metal slag. Aluminum slag is generated on the surface of the molten metal in the aluminum melting furnace.

Waste stored in the waste storage tank 1 may be stored in powder form. If the waste generated at the site is in the form of lumps or large pieces, it is crushed and stored in the waste storage tank (1) in powder form for use.

A certain amount of cement is stored in the cement storage tank 3, and a certain amount of water is stored in the water storage tank 5. In addition, the additive storage tank 7 stores a certain amount of additives such as pigments and admixtures.

The waste stored in the waste storage tank 1 is introduced into the blender 60 via the pretreatment unit.

The pretreatment unit improves the properties of the waste stored in the waste storage tank 1 by chemical or physical treatment.

For example, since aluminum (Al) contained in aluminum waste dust has reactivity, it is necessary to chemically treat aluminum (Al) to convert it into a stable material. In addition, there is a need to neutralize acidic or alkaline wastes. In addition, since dust or oil is contained in the waste, it is necessary to remove the dust or oil by physical treatment.

In this way, the pretreatment unit for chemical or physical treatment is a pair of first and second intermediate hoppers 11 and 12 into which the waste stored in the waste storage tank 1 flows in, and the waste discharged from the first intermediate hopper 11. A first mixing chamber 31 that is introduced and stirred, and a second mixing chamber 32 that is agitated alternately with the first mixing chamber 31 and the waste discharged from the second intermediate hopper 12 flows in, and the first A treatment agent supply unit for selectively supplying a treatment agent to either of the mixing chamber 31 and the second mixing chamber 32 is provided.

The first and second intermediate hoppers 11 and 12 are installed side by side. In the first and second intermediate hoppers 11 and 12, wastes discharged from the waste storage tank 1 are respectively introduced and temporarily stored.

An elevator conveyor 13 and a screw conveyor 14 may be used to introduce waste into the first and second intermediate hoppers 11 and 12. The lower part of the elevator conveyor 13 is located inside the waste storage tank 1 and transfers the waste stored in the waste storage tank 1 to the screw conveyor 14. The screw conveyor 14 has two outlets to input waste into the first and second intermediate hoppers 11 and 12, respectively.

Feed conveyors 15 and 16 are installed below the first and second intermediate hoppers 11 and 12, respectively. Wastes discharged from the first and second intermediate hoppers 11 and 12 are transferred to the belt conveyor 17 by the feed conveyors 15 and 16. Waste conveyed along the belt conveyor 17 is introduced into the first and second mixing chambers 31 and 32 by the screw conveyor 18.

The belt conveyor 17 and the screw conveyor 18 are installed side by side in pairs, respectively. Therefore, the waste discharged from the first intermediate hopper 11 flows into the first mixing chamber 31, and the waste discharged from the second intermediate hopper 11 flows into the second mixing chamber 32. .

The first mixing chamber 31 and the second mixing chamber 32 are installed side by side. The first mixing chamber 31 and the second mixing chamber 32 have a structure in which a rotation shaft is installed inside a cylindrical housing, and a spiral screw is formed on the rotation shaft.

The first mixing chamber 31 and the second mixing chamber 32 operate alternately. For example, the rotating shaft of the first mixing chamber 31 rotates for 1 to 10 minutes to stir the waste and the treatment agent. Then, the rotating shaft of the first mixing chamber 31 is stopped, and the contents are discharged from the first mixing chamber 31. In addition, the rotating shaft of the second mixing chamber 32 rotates for 1 to 10 minutes to stir the waste and the treatment agent. Then, the rotation axis of the second mixing chamber 32 is stopped, and the contents are discharged from the first mixing chamber 31. In addition, the rotating shaft of the first mixing chamber 31 rotates for 1 to 10 minutes to agitate the waste and the treatment agent. In this way, while the first mixing chamber 31 and the second mixing chamber 32 operate alternately, waste can be continuously supplied to a subsequent process without interruption.

The treatment agent supply unit selectively supplies the treatment agent to one of the first mixing chamber 31 and the second mixing chamber 32.

The treatment agent causes a chemical reaction with the waste to change the unstable material in the waste to a stable material or to change acidic or alkaline to neutral. In addition, the treatment agent makes it possible to physically remove foreign matter or oil mixed in the waste.

Examples of such treatment agents include water, acid solutions, alkali solutions, and surfactants. For example, water reacts with aluminum (Al) contained in aluminum waste dust to change aluminum (Al) into a stable and stable hydroxide. And acid solution or alkaline solution neutralizes acidic waste or alkaline waste. In addition, water serves to float dust or oil mixed in the waste to the water surface, so that physical separation is possible.

As described above, the present invention has the advantage of utilizing various types of wastes by being configured to stabilize or neutralize wastes by chemically or physically treating them.

Although not shown, the treatment agent supply unit includes a treatment agent storage tank in which the treatment agent is stored, a first treatment agent supply pipe connecting the treatment product storage tank and the first mixing chamber 31, and a second treatment agent supply pipe connecting the treatment product storage tank and the second mixing chamber 32 It consists of. In addition, first and second opening and closing valves for opening and closing the flow path are installed in the first treatment agent supply pipe and the second treatment agent supply pipe, respectively. The first and second opening and closing valves are operated alternately.

A belt conveyor (not shown) and a screw conveyor 33 are used to transfer wastes discharged from the first mixing chamber 31 and the second mixing chamber 32 to the drying kiln 40.

The belt conveyor is installed under the first mixing chamber 31 and the second mixing chamber 32. Waste discharged from the first mixing chamber 31 and the second mixing chamber 32 moves along the belt conveyor and then flows into the screw conveyor 33.

The belt of the belt conveyor through which waste is discharged from the first mixing chamber 31 and the second mixing chamber 32 uses a mesh mesh type. Thus, a liquid treatment agent such as water flows down and separates from the waste.

The pretreatment unit includes a drying kiln 40 for drying the waste discharged from the first and second mixing chambers 31 and 32, a cooler 45 for cooling the waste that has passed through the drying kiln 40, and a cooler 45. ), and a buffer tank 50 through which the waste passed through is introduced into the interior.

The drying kiln 40 removes moisture or oil in the waste by applying high temperature heat of 200 to 1000°C to the waste, and burns various organic materials. These moisture, oil, and organic substances lower the physical strength when recycling waste.

The drying kiln 40 is heated by directly introducing the heat generated from the burner into the drying kiln 40 to heat the drying kiln 40, or by exchanging the heated heat exchange medium inside the drying kiln 40. I can make it.

Waste discharged from the drying kiln 40 is moved to the cooler 45 by the screw conveyor 41.

The cooler 45 cools the waste that has passed through the drying kiln 40.

Waste discharged from the cooler 45 flows into the buffer tank 50 through the belt conveyor 46 and the elevator conveyor 47.

The buffer tank 50 serves to temporarily store the dried waste and supply the required amount to the mixer 60 at an appropriate time. Waste discharged from the buffer tank 50 is introduced into the mixer 60 by the screw conveyor 51 and the belt conveyor 53.

The blender 60 is mixed with at least one of cement, water, and additives, and waste is introduced into the blender.

The first, second, third, and fourth weighing hoppers 71, 73, 75, and 77 are installed on the top of the mixer 60. The first to fourth weighing hoppers are installed on the top of the mixer 40.

The first weighing hopper 71 measures the transferred waste from the buffer tank 50 and discharges it into the blender 60. And the second weighing hopper 73 measures the cement discharged and transferred from the cement storage tank 3 and discharges it into the blender 60, and the third weighing hopper 75 is discharged from the water storage tank 5 and transferred. Water is measured and discharged into the blender 60, and the fourth weighing hopper 77 measures the transferred additives discharged from the additive storage tank 7 and discharges them into the blender 60. The first to fourth weighing hoppers have a structure in which a conventional meter is installed and discharged by a set amount.

The mixer 60 has a structure in which a stirring fan is installed, and a driving motor for rotating the stirring fan is installed in the cylindrical mixer.

Waste, cement, water, and additives are respectively introduced into the blender 60 through the 1st, 2nd, 3rd, and 4th weighing hoppers, and waste, cement, water, and additives are mixed and kneaded by rotation of the stirring pan. To form.

Waste, cement, water, and additives flowing into the blender 60 are uniformly mixed by rotation of the stirring pan to form a dough.

The molding unit molds the mixture discharged from the blender 60 into a certain shape and fires it.

The molding unit includes an extruder 80 for molding a mixture in the form of a dough discharged from the blender 60 into granules, and a firing kiln 85 for sintering the granular molded body discharged from the extruder 80.

The extruder 80 molds the mixture discharged from the blender 60 into a predetermined shape. For this purpose, an extruder 80 is installed below the outlet of the blender 60. The mixture is introduced into the inside of the extruder 80 and is cut into a certain length while being extruded. Through the extruder 80, the mixture is formed into a granular shaped body such as a pellet.

The molded body molded and discharged from the extruder 80 is introduced into the sintering kiln 85. The firing kiln 85 serves to fire at a high temperature by heating the molded body discharged from the extruder 80 while rotating. The firing kiln 85 is heated to 400 to 600° C. to fire the molded body therein.

Heating the sintering kiln 85 by directly introducing the heat generated from the burner into the interior of the sintering kiln 85, or heating the sintering kiln 85 by exchanging the heated heat exchange medium inside the sintering kiln 85 I can make it.

The granular molded body 91 discharged from the firing kiln 85 is recovered by moving through a conveyor 87. The molded body 91 formed in this way may be recycled as a resource capable of replacing sand or gravel.

In addition, only waste and cement may be supplied into the blender, mixed, and then discharged to the outside in the form of powder 95 through the conveyor 89.

As described above, in the present invention, the waste may be recycled by molding it into a granular molded body, or it may be recycled in a powder form mixed with cement.

On the other hand, it may be configured to gradually dry the waste moving along the screw conveyor by injecting the heated heat exchange medium into the interior of the plurality of screw conveyors applied to the present invention.

In another embodiment of the present invention, a mixing tank for mixing water and an additive may be further provided.

For example, water stored in a water storage tank and an additive stored in an additive storage tank may be introduced into a mixing tank to uniformly mix water and additives, and then supplied to the inside of a mixer.

To this end, a mixing tank 100 as shown in FIG. 3 is installed.

The mixing tank 100 has a stirring unit installed inside the cylindrical housing 101. The water supply pipe 6 is connected to the housing 101. Therefore, the water discharged from the water storage tank flows into the housing 101 and is stored. The additive and water mixed in the housing 101 are discharged through the discharge pipe 150 and supplied to the blender.

The stirring unit includes a main rotation shaft 105 having a flow path 107 formed therein, a sub rotation shaft 110 formed on the top of the main rotation shaft 105, and a circular hollow plate coupled to the main rotation shaft 105 and having an empty inside. 120 and a pair of first and second blade units 130 and 140 coupled to the sub-rotation shaft 110.

The main rotation shaft 105 penetrates the bottom of the housing 101 and is vertically installed inside the housing 101. Although not shown, the main rotation shaft 105 has a structure that is connected to a belt or a chain and rotates by a motor. The lower portion of the main rotation shaft 105 is connected to the additive supply pipe 8 by a rotary joint 109. Therefore, the additive supplied through the additive supply pipe 8 flows into the flow path 107 formed inside the main rotation shaft 105.

The hollow plate 120 has a disk-shaped structure with an empty inside. A plurality of ejection holes 123 are formed on the upper surface of the hollow plate 120. The inside of the hollow plate 120 and the flow path 107 of the main rotation shaft 105 are in communication. Therefore, the additive introduced into the flow path of the main rotation shaft 105 is introduced into the hollow plate 120 and is ejected upward through the ejection hole 123. Since the additive is ejected into water through the hollow plate 120 rotating together with the main rotating shaft 105 rotating as described above, the mixing effect can be enhanced.

The sub rotation shaft 110 is formed perpendicular to the upper end of the main rotation shaft 105.

The first and second blade parts 130 and 140 are installed at a position spaced upward from the hollow plate 120. The first and second blade units 130 and 140 are installed correspondingly around the sub-rotation shaft 110.

The first blade part 130 is located below the first upper wing 131 and the first upper wing 131 formed by extending horizontally for a predetermined length from the sub-rotation shaft 110 and the first upper wing 131 The first lower wing 133 formed in parallel with the first upper wing 131 and having a shorter length than the first joint bars 135 connecting the first upper wing 131 and the first lower wing 133 Consists of

And the second blade part 140 is located under the second upper wing 141 formed by extending a predetermined length from the sub-rotation shaft 110, the second upper wing 141 and the second upper wing 141 The second joint bars 145 formed in parallel, connecting the second upper wing 143 and the second upper wing 141 and the second lower wing 143 that are longer than the second upper wing 141 Consists of

The first upper wing 131 and the second lower wing 143 have the same length, and the first lower wing 133 and the second upper wing 141 have the same length.

As described above, the first blade unit 130 and the second blade unit 140 have a shape in which the top and bottom are reversed. Therefore, when rotating, different swirling flows are formed around the first blade unit 130 and the second blade unit 140 to generate violent turbulence while colliding, thereby greatly enhancing the mixing effect of water and additives.

In the above, the present invention has been described with reference to one embodiment, but this is only exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent embodiments are possible therefrom. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

1: waste storage tank 3: cement storage tank
5: water storage tank 7: additive storage tank
11: first intermediate hopper 12: second intermediate hopper
31: first mixing chamber 32: second mixing chamber
40: drying kiln 45: cooler
50: buffer tank 60: blender
80: extruder 85: firing kiln

Claims (5)

A storage unit including a waste storage tank in which non-combustible waste is stored, a cement storage tank in which cement is stored, a water storage tank in which water is stored, and an additive storage tank in which additives are stored;
A pretreatment unit for improving properties by chemically or physically treating the waste stored in the waste storage tank;
A blender in which at least one of cement stored in the cement storage tank, water stored in the water storage tank, and additives stored in the additive storage tank, and the waste passing through the pretreatment unit are introduced into and mixed;
And a molding unit for molding and firing the mixture discharged from the mixer into a predetermined shape
The pretreatment unit applies a treatment agent to the waste to change the waste to a stable material, neutralize the waste, or remove foreign matter or oil mixed in the waste,
The pretreatment unit includes a pair of first and second intermediate hoppers through which waste stored in the waste storage tank is introduced, a first mixing chamber through which waste discharged from the first intermediate hopper is introduced and stirred, and parallel to the first mixing chamber. A second mixing chamber that is installed so that waste discharged from the second intermediate hopper flows in and is alternately stirred with the first mixing chamber, and the treatment agent selectively in any one of the first mixing chamber and the second mixing chamber. A treatment agent supply unit for supplying a treatment agent, a drying kiln for drying waste discharged from the first and second mixing chambers, a cooler for cooling the waste passing through the drying kiln, and the waste passing through the cooler into the interior. It has an inflow buffer tank,
The treatment agent is a non-combustible waste recycling treatment apparatus, characterized in that any one of water, an acid solution, an alkali solution, and a surfactant. delete delete The apparatus of claim 1, wherein the molding unit includes an extruder for molding the mixture discharged from the mixer into granules, and a firing kiln for sintering the granular molded body discharged from the extruder. The method of claim 1, further comprising a mixing tank in which water stored in the water storage tank and an additive stored in the additive storage tank are introduced and mixed,
The mixing tank includes a cylindrical housing connected to the water storage tank and a water supply pipe, and a stirring unit installed in the housing,
The stirring unit has a flow path formed therein, is connected to the additive storage tank and the additive supply pipe, and penetrates the bottom of the housing and is vertically installed inside the housing, and a sub-rotation shaft formed perpendicular to the upper portion of the main rotation shaft. And, a circular hollow plate coupled to the main rotation shaft and empty inside and having a plurality of ejection holes formed on an upper surface thereof, and a pair of first and second blade portions coupled to the sub rotation shaft,
The first blade portion is formed to extend horizontally from the sub-rotation shaft by a predetermined length and is positioned below the first upper wing and is formed in parallel with the first upper wing, and is longer than the first upper wing. A short first lower wing, and having first joint bars connecting the first upper wing and the first lower wing,
The second blade portion is formed to extend a predetermined length from the sub-rotation shaft and is located below the second upper wing and is formed in parallel with the second upper wing, but has a length longer than that of the second upper wing. A non-combustible waste recycling treatment apparatus comprising: a second long upper wing and second joint bars connecting the second upper wing and the second lower wing.

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