KR101064116B1 - Apparatus for manufacturing slag - Google Patents

Abstract

The slag manufacturing apparatus according to the present invention can produce a slag in the form of particles having a predetermined particle size through the process of cooling the slag in the molten state and at the same time, so as to produce a slag in the form of particles through cooling and compression It can proceed in series through a single device, thereby simplifying the process, it is possible to reduce the processing time required for the process. In addition, by spraying the powder on the slag to increase the surface roughness of the slag can improve the adhesion to other materials.

Slag, melting, cooling

Description

Slag Manufacturing Equipment {APPARATUS FOR MANUFACTURING SLAG}

The present invention relates to an apparatus for producing slag by cooling the slag discharged by ash melting method.

Sewage sludge is a by-product of sewage treatment, most of which is landfilled or dumped at sea. The final disposal of sewage sludge by ocean dumping is the final disposal method of sludge most preferred by most local governments because of the lower processing cost than land treatment.However, the London Convention, the international convention on waste dumping, With the revision, regulations on waste disposal at sea have been tightened, and the importance of improving the marine environment is increasing.

On the other hand, most of the sewage sludge produced during the treatment of domestic sewage has been buried in landfills.However, when sewage sludge, which is an organic sludge, is reclaimed, secondary environmental pollution, such as soil pollution due to leachate and odor generated from sludge, is concerned. The Ministry of Environment requires that organic sludge should not be buried directly through amendment of the Enforcement Regulations of the Waste Management Act. Only the residues after incineration and composting are reclaimed.

In response, the Ministry of Maritime Affairs announced amendments to the Enforcement Regulations of the Marine Pollution Prevention Act to strengthen marine dumping waste allowance standards and restrict discharge methods.In principle, from 2012, banning dumping of sewage sludge and livestock wastewater, which have high potential for marine pollution, such as heavy metals I did.

As the final treatment of sewage sludge becomes relatively simple and inexpensive landfilling and ocean dumping become difficult, treatment methods by incineration and melting to reduce sludge while consuming energy are gradually applied and expanded in each municipality.

The method for treating sludge by melting is performed by injecting sludge melted in a melting furnace into a large mold and then cooling the air by a method of air cooling to convert the sludge into slag. In addition, the slag cooled and solidified in a large mold cannot be used immediately as a earthwork material because it is large in size, and once loaded into a yard, transferred to a separate grinding device, and then crushed into a particle shape in the grinding device. Going through. The slag pulverized to have a predetermined particle diameter in the pulverizing device can be used only for earthworks.

However, in the conventional slag manufacturing process, the slag having a predetermined particle size is manufactured by grinding the slag cooled in a large mold using a separate grinding device, so that the process is complicated and required equipment and cost are increased. There is an increasing problem.

In addition, the slag cooled after melting the sludge has low strength fragility and adhesion to other materials such as cement, and thus is insufficient for aggregate, which is mostly used as a low-grade earthwork material. Can be used to avoid the use of molten slag or as a means of landfill, resulting in waste of resources.

The present invention is to solve the above problems of the prior art, an object of the present invention is to provide a slag manufacturing apparatus that can manufacture a slag having a predetermined particle size through the process of simultaneously cooling the slag in the molten state and pressing. It's there.

In addition, it is an object of the present invention to provide a slag manufacturing apparatus that can improve the strength fragility and adhesion to other materials by supplementing the disadvantages of molten slag while recycling the ash generated during incineration.

The slag manufacturing apparatus according to the present invention according to the present invention for achieving the above object is a molten furnace having an outlet for discharging the slag in the molten state, and the slag in the molten state is installed adjacent to the outlet of the melting furnace and discharged through the outlet It may be configured to include a cooling pressing unit for pressing the cooling at the same time to produce a slag in the form of particles.

Here, the cold press unit includes a first roller having a first flow path formed therein, a second roller installed adjacent to the first roller and having a second flow path formed therein, a first flow path of the first roller, and It may include a cooling fluid supply device for supplying a cooling fluid to the second flow path of the second roller, and a rotating device for rotating the first roller and the second roller.

In addition, the slag manufacturing apparatus according to the present invention may be configured to further include a powder injection unit which is installed on one side of the cold pressing unit for spraying the powder to the slag passing through the cold pressing unit.

In addition, the slag manufacturing apparatus according to the present invention may be configured to further include a guide member which is installed on the lower side of the cooling compression unit to guide the movement of the slag passed through the cooling compression unit.

In addition, the slag manufacturing apparatus according to the present invention may be configured to further include a temperature control device is installed to be adjacent to the outlet of the melting furnace to adjust the temperature of the slag in the molten state passing through the outlet.

The slag manufacturing apparatus according to the present invention can produce a slag in the form of particles having a predetermined particle size through the process of cooling the slag in the molten state at the same time as a compression, the production process of the slag in the form of particles through compression and cooling Through this one device can be carried out in series, thereby greatly simplifying the process and has the effect of reducing the processing time required for the process.

In addition, the slag is formed into a thin plate shape through the compression and cooling process, and the slag of the thin plate is guided by the guide member to be moved or dropped to separate the particles having a predetermined particle size to generate the granular slag. have. Therefore, it does not require a separate grinding device and grinding process for crushing the slag, there is an effect that can reduce the cost and processing time by reducing the slag manufacturing equipment and manufacturing process.

Slag manufacturing apparatus according to another embodiment of the present invention is provided with a powder injection unit for injecting a powder having a predetermined particle diameter in the slag passing through the cold compression unit, thereby increasing the surface roughness of the slag to adhere to other materials It is possible to improve and, accordingly, there is an effect of improving the strength of the mixed material.

Hereinafter, a slag manufacturing apparatus according to the present invention with reference to the accompanying drawings will be described.

1 is a schematic diagram showing a slag manufacturing apparatus according to an embodiment of the present invention, Figure 2 is a schematic diagram showing a cooling compression unit of the slag manufacturing apparatus of FIG.

As shown in FIG. 1, the slag manufacturing apparatus according to the present invention is connected to a receiving part 11 and a receiving part 11 in which waste incineration materials, such as sludge or household waste, are accommodated, and thus slag S1 in a molten state is formed. Melting furnace 10 having a discharge port 12 to be discharged, supply pipe 20 for supplying waste incineration materials such as sludge or household waste to the receiving portion 11, and the waste incineration material accommodated in the receiving portion 11 It is installed adjacent to the heating unit 30 and the outlet 12 of the melting furnace 10 and simultaneously cooled while pressing the slag (S1) of the molten state discharged through the outlet 12 to generate granular slag. It may be configured to include a cooling compression unit (40).

As the melting furnace 10, a plasma melting furnace for melting waste incinerators using thermal plasma is preferably applied in terms of efficiency and environment. In this case, the heating unit 30 discharges the high-speed jet flame ionizing gas 31 toward the waste incineration material in the accommodating part 11 by using a direct current arc or a high frequency inductively coupled discharge to bring the waste incineration material to a temperature of several thousand degrees. It may be a plasma torch for heating. However, the present invention is not limited to the embodiment using the plasma melting furnace and the plasma torch, and various melting furnaces and heating units capable of heating waste incinerators such as blast furnaces and electric furnaces at melting temperatures may be applied.

Receiving portion 11 may be formed in a bowl shape recessed to a predetermined depth on a base made of a fire-resistant material, the outlet 12 may communicate with and extend the receiving portion 11, the melting furnace A gas exhaust port 14 may be formed to penetrate the wall constituting the 10 so that the gas in the melting furnace 10 is exhausted.

The cold pressing unit 40 may serve to compress and simultaneously cool the slag S1 in the molten state, which is installed adjacent to the end of the outlet 12 through which the molten slag S1 is discharged. . As shown in FIG. 2, the cold press unit 40 includes a first roller 41 having a first flow path 411 formed therein, a second roller 42 having a second flow path 421 formed therein; A cooling fluid supply device 43 for supplying a cooling fluid to the first flow path 411 of the first roller 41 and the second flow path 421 of the second roller 42, the first roller 41, and It may be configured to include a rotary device 44 for rotating the second roller 42.

The first roller 41 and the second roller 42 is rotated by the rotary device 46 serves to compress the slag (S1) of the molten state discharged through the discharge port 12, and at the same time, It serves to transfer the heat of the slag (S1) in the molten state to the cooling fluid flowing through the first passage 411 and the second passage (421). On the other hand, in the embodiment of the present invention is shown a cold pressing unit 40 is provided with two first roller 41 and the second roller 42 to press and cool the slag (S1) in the molten state, The invention is not limited thereto, and a cold press unit having two or more rollers may be applied.

As the first passage 411 and the second passage 421, a flow path tube passing through the first roller 41 and the second roller 42 may be applied. In this case, a bearing 412 may be installed between the first roller 41 and the first passage 411 to allow free rotation of the first roller 41 with respect to the first passage 411. Similarly, a bearing 422 may be installed between the second roller 42 and the second flow passage 421. The bearings 412 and 422 may be slide bearings, and may have a shape extending in the longitudinal direction of the first roller 41 or the second roller 42. However, the present invention is not limited to the type and shape of the bearing. One end of each of the first passage 411 and the second passage 421 may be connected to each other, and the other ends not connected to each other may be connected to the cooling fluid supply device 43. In this case, the cooling fluid supplied from the cooling fluid supply device 43 passes through the first flow path 411 and the second flow path 421 sequentially (or in the opposite direction), and then back to the cooling fluid supply device 43. It can be circulated as it enters. However, the present invention is not limited thereto, and the first flow path 411 and the second flow path 421 are not connected to each other, and are configured to be connected to the plurality of cooling fluid supply devices 43 so that the cooling fluid is not circulated. This can be applied.

The cooling fluid supply device 43 serves to supply the cooling fluid to the first flow passage 411 and the second flow passage 421 at a predetermined pressure. The inside of the cooling fluid supply device 43 may be provided with a heat exchanger for exchanging the heat of the cooling fluid with the surrounding heat. The cooling fluid may be water, but is not limited thereto and may be a liquid or gaseous refrigerant.

The rotating device 44 includes a driving wheel 441 connected to the outer circumferential surfaces of the first roller 41 and the second roller 42, respectively, and a rotating motor 442 for rotating the driving wheel 441. Can be. When the rotational power of the rotary motor 442 is transmitted to the driving wheel 441 by the configuration, the driving wheel 441 is rotated, and thus the first roller 41 in contact with the outer circumferential surface of the driving wheel 441. The second roller 42 is rotated in the opposite direction to each other, that is, in a direction such that the discharged slag S1 is discharged to the outside. On the other hand, in the embodiment of the present invention, the rotary device 44, the driving wheel 441 and the driving motor in contact with the outer peripheral surface of the first roller 41 and the second roller 42, respectively, the rotary motor for rotating A configuration including 442 is provided, but the present invention is not limited thereto, and includes a single rotation motor and transmits power of a rotation motor to a driving wheel that is in contact with the outer circumferential surfaces of the first roller and the second roller. Various mechanisms capable of rotating the first roller 41 and the second roller 42, such as a mechanism having a mechanism, connected to a central axis of the first roller and the second roller to rotate the first roller and the second roller, and the like. The configuration can be applied.

The lower side of the cooling compression unit 40 may be provided with a guide member 45 for guiding the movement of the compressed and cooled slag (S2) while passing through the cooling compression unit (40). Accordingly, the slag S2 compressed and cooled while passing through the first roller 41 and the second roller 42 has a thin thin plate shape. The thin slag S2 is a flat guide member ( 45 may be broken to a size having a predetermined particle size while being guided and moved. On the other hand, by adjusting the installation angle and the installation height of the guide member 45, the amount of impact due to the falling of the slag (S2) of the slab discharged from the cold pressing unit 40 can be adjusted, through which the final of the slag (S2) The size of the particle size can be adjusted. However, the present invention is not limited thereto, and a predetermined roller may be provided on the discharge side of the guide member 45 so that the slag S2 guided to the guide member 45 may be broken.

On the other hand, in the slag manufacturing apparatus according to the present invention is installed so as to be adjacent to the outlet 12 of the melting furnace 10 to adjust the temperature of the slag (S1) of the molten state passing through the outlet 12 to optimize the slag (S1) It may be configured to further include a temperature control device 60 to maintain the molten state. As such, the temperature control device 60 may be a burner for radiating the flame toward the slag (S1) passing through the outlet 12. However, the present invention is not limited thereto, and various configurations, such as a plasma torch or a high frequency heater, may be applied to the temperature control device 60.

Hereinafter, the operation of the slag manufacturing apparatus according to an embodiment of the present invention configured as described above will be described.

First, when the sludge incinerator of sewage or waste water or waste incinerator, such as household waste, is introduced into the receiving unit 11 of the melting furnace 10 through the supply pipe 20 and received therein, at the same time, the heating unit 30 is operated. The waste incineration material accommodated in the accommodating part 11 is incinerated and melted. Then, the slag (S1) in the molten state flows to the cooling compression unit 40 along the outlet 12. At this time, the temperature control device 60 is operated so that the temperature of the slag (S1) flowing along the outlet 12 can be adjusted according to the appearance of the external environment, work processes or the required slag. The slag S1 in the molten state moved to the cold press unit 40 is pressed while passing through the first roller 41 and the second roller 42. At the same time, the cooling fluid supplied from the cooling fluid supply device 43 flows into the first flow path 411 and the second flow path 421 of the first roller 41 and the second roller 42. By the heat exchange between the molten slag S1 and the cooling fluid, the molten slag S1 is cooled to produce a solid slag S2. Then, the slag (S2) of the thin plate shape is broken by falling to the guide member 45 or guided by the guide member 45 to move. Through such a process, slag in the form of particles having a predetermined particle diameter is manufactured.

In the slag manufacturing apparatus according to an embodiment of the present invention configured and operated as described above, the slag (S2) having a predetermined particle diameter through the process of simultaneously cooling the slag (S1) of the molten state and pressing the same Since the slag in the form of particles can be produced through the forming process, the production of the slag in the form of particles through the compression and cooling of the molten slag (S1) can be carried out in series through a single device, accordingly, The process can be greatly simplified and the processing time required for the process can be shortened.

In addition, since the slag (S2) is formed in a thin plate shape through the compression and cooling process, the thin slag (S2) is guided to the guide member 45 is separated into particles having a predetermined particle size while being moved or dropped, the conventional As compared with the case of producing a large slag and then grinding it through a separate grinding device, there is an effect that can reduce the cost by reducing the equipment.

Hereinafter, another embodiment of the slag manufacturing apparatus according to the present invention will be described. Figure 3 is a schematic diagram showing another example of the slag manufacturing apparatus according to the present invention.

As shown in FIG. 3, according to another embodiment of the present invention, the powder P having a predetermined particle diameter in the slag S2 installed on one side of the cooling compression unit 40 and passing through the cooling compression unit 40 is provided. Powder injection unit 70 for injecting may be provided. The powder spraying unit 70 has a nozzle 71 in which a discharge port is directed toward the slag S2 and the powder P is sprayed, and a powder supply device 72 for supplying the powder P to the nozzle 71. ), And a supply pipe 73 connecting the nozzle 71 and the powder supply device 72. According to this structure, the powder P is supplied from the powder supply apparatus 72 to the nozzle 71 through the supply pipe 73 by the predetermined pressure, and is injected toward the slag S2.

When the powder P is attached to the surface of the slag S2 by the powder spraying unit 70, the surface roughness of the slag S2 is increased. Accordingly, when the slag S2 is mixed with other materials, Since the adhesiveness with a material improves, slag S2 and another material can be mixed efficiently. In addition, the tensile strength and the compressive strength of the mixture of the slag (S2) and other materials can be improved.

For example, the slag S2 to which the powder P is attached has a rough surface, so that the adhesive strength with the cement is improved compared to the conventional water-cooled slag and air-cooled slag having a smooth surface, thereby improving the strength characteristics of the cement when used as aggregate. Can be.

The powder P may be optionally prepared by using clay minerals such as loess and bentonite, or a material capable of reacting by being reacted at a slag (S2) temperature. As the powder P, it is preferable to use a powder having a particle size of 300 to 500 µm, which is the best crystallization, to improve product quality.

The slag manufacturing apparatus according to another embodiment of the present invention is provided with a powder injection unit 70 for injecting the powder (P) having a predetermined particle diameter in the slag (S2) passing through the cold pressing unit 40, slag ( The surface roughness of S2) may be increased to improve adhesion to other materials, thereby improving the strength of the mixed material.

The technical idea described in each embodiment of the present invention may be implemented independently, or may be implemented in combination with each other. In addition, the present invention has been described through the embodiments described in the drawings and detailed description of the invention, which is merely exemplary, and those skilled in the art to which the present invention pertains various modifications and equivalent other embodiments from this It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

1 is a schematic diagram showing a slag manufacturing apparatus according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a cold press unit of the slag manufacturing apparatus of FIG.

Figure 3 is a schematic diagram showing a slag manufacturing apparatus according to another embodiment of the present invention.

*** Explanation of symbols for main parts of drawing ***

10: melting furnace 20: supply pipe

30: heating unit 40: cooling compression unit

60: temperature controller 70: powder injection unit

Claims (5)

A cooling compression unit installed adjacent to the outlet of the melting furnace and cooling the slag in the molten state discharged through the outlet and simultaneously compressed to produce slag in the form of particles; And Slag manufacturing apparatus comprising a powder injection unit is installed on one side of the cold pressing unit for spraying powder to the slag passing through the cold pressing unit. The method of claim 1, The cooling compression unit, A first roller having a first flow path formed therein; A second roller installed adjacent to the first roller and having a second flow path formed therein; A cooling fluid supply device for supplying a cooling fluid to the first flow path of the first roller and the second flow path of the second roller; Slag manufacturing apparatus comprising a rotating device for rotating the first roller and the second roller. delete The method of claim 1, Slag manufacturing apparatus further comprises a guide member installed on the lower side of the cooling crimping unit to guide the movement of the slag passed through the cooling crimping unit. The method of claim 1, Slag manufacturing apparatus further comprises a temperature control device is installed to be adjacent to the outlet of the melting furnace to control the temperature of the slag in the molten state passing through the outlet.

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