KR200318868Y1 - Apparatus for melting the sludge - Google Patents

Abstract

The present invention relates to a waste dissolving device, and the melting device according to the present invention is divided into preheating, melting and melt homogenizing when the sludge and flux introduced into the melting furnace are dissolved. It is possible to prevent the waste of energy by preventing cooling, and to achieve the effect of heating the melt that is not sufficiently dissolved by the remaining melt in the molten molten metal, slag and the melt is separated and the fluidity is homogenized in the molten molten metal The molten slag overflows and is discharged to the outside, and the heavy gravity melt is discharged to the outside of the molten metal. Therefore, the present invention is to ensure the internal space of the melting furnace by designing the molten block in a step shape.

Description

Waste melting apparatus {APPARATUS FOR MELTING THE SLUDGE}

The present invention does not limit the content of organic matter and metals contained in the sludge, does not need to install unnecessary burners by using the heat generated from the sludge itself, and does not require the installation of an additional combustion chamber, and also requires high construction costs. It relates to a waste melting apparatus that does not adopt an electrical resistance type.

Today, with the development of various industries, various sludges are generated in industrial sites. Some of these sludges are harmless and easily decomposed, but most of the sludges contain harmful components and contain most of the materials that are not easily decomposed.

In addition, if the sludge is discarded or reclaimed anywhere without discrimination, it can cause serious social problems such as secondary pollution such as water quality and soil pollution, resulting in environmental destruction. Therefore, in recent years, treatment methods using incineration have been actively studied, and now waste incineration or melting facilities or devices have been disclosed.

For example, one of the melting methods currently in use is a waste melting apparatus using electric resistance heat. This is schematically illustrated in FIG. 1, and referring to FIG. 1, a melting furnace 1 and a pair of electrodes 2, 2 ′ provided in the melting furnace 1 to generate high temperature heat are provided.

The melting furnace 1 has a molten metal 1a formed therein, and the electrode rods 2 and 2 'are provided to face each other at a predetermined distance from a lower portion of the melting furnace 1 at a predetermined distance.

On the upper side of the melting furnace 1, there is formed a waste inlet 1b into which waste mixed with metal and organic matter is introduced, and a gas outlet 1c for discharging the gas generated during incineration of the waste.

At the lowermost part of the melting furnace 1, a slag discharge port 1d through which waste slag is melted by the high heat generated by the electrode rods 2 and 2 'is discharged, and a slag discharge port 1d is formed. The salt discharge port 1e is formed to discharge the salts generated and suspended when the waste is dissolved.

According to the prior art configured as described above, when a predetermined time has elapsed since the melting furnace 1 is operated, the waste introduced through the waste inlet 1b is not only burned with organic matters but also incompletely burned with organic matters and oxidized before the molten state is melted. Gas is generated.

Only a fraction of the harmful substances contained in this oxidizing gas are melted in the waste and melt in the changed slag, but the remainder is not melted in the slag and goes out through the outlet.

However, incomplete oxidizing gas exiting through the outlet not only causes corrosion of the electrical installation, but also has a drawback of not having a combustion space.

After the slag is discharged to some extent through the outlet 1d, only salts remain inside the melting furnace 1, and a slight explosion occurs in the melting furnace due to the characteristics of the salts. Since it does not have much, there is a problem that the temperature of the furnace does not rise quickly when the melting furnace 1 is restarted. Thus, to solve this problem, the salt discharge port 1e allows the salt to be naturally discharged to the middle portion of the melting furnace 1. ), There was a design difficulty to form separately.

In addition, since the above-described prior art uses electrodes 2 and 2 'as a heat source for melting the waste introduced into the melting furnace 1, metals are also included in the waste introduced through the waste inlet 1b of the melting furnace 1. It is included, if the input amount of the metals exceeds a predetermined value or more serves as a conductor between the electrode rods 22 'to prevent the generation of high temperature heat inside the melting furnace (1).

For this reason, there was a problem in that it is not possible to add more than a certain amount of moisture, flammables and metals into the melting furnace 1.

In addition to the waste treatment apparatus described above, there is another melting apparatus for melting the waste by heating the inside of the melting furnace to a high temperature as shown in FIG. 2.

As shown in Fig. 2, in order to store waste on the inlet 5a and the inlet 5a side of the inlet 5a and outlet 5b, the passage 5c is formed with a constant inclination to the inlet 5c. The hopper 6 to be installed, the extrusion means 7 for extruding the waste discharged from the hopper 6 into the passage 5c of the melting furnace 5, and the extrusion means 7 of the melting furnace 5 A plurality of burners 8 installed on the melting furnace 5 to melt and heat the waste moving along the inner surface of the passage 5c, and the melting furnace 5 to cool the slag changed by melting the waste. The cooling means 9 is provided in the outlet 5b of this, and the conveyor 10 which carries out the slag cooled and solidified by this cooling means 9 is comprised.

By the way, according to another example of the prior art configured as described above, the waste introduced through the hopper 6 is melted by the burner 8 while moving along the inclined surface inside the passage 5c of the melting furnace 5. Therefore, there has been a problem in that manufacturing costs such as the need to install a plurality of burners 8 in the melting furnace 5 are increased.

The waste introduced through the hopper 6 also includes metals, some of which are transported together with the waste and are not melted, but are transported to the outside by the conveyor 10 together with slag. In addition to the problem of not being able to add a certain amount of metals in (6), there is a disadvantage that the combustion space is narrowed when the combustible powder is added.

The present invention was devised to solve the problems as described above, and produced in a different configuration than the conventional method, without limiting the input amount of water, flammables and metals contained in the waste, burner required for melting the sludge It does not need to install much, does not need to adopt an electrical resistance type that requires a lot of installation costs, and the object is to provide a melting apparatus of the waste not to form a separate secondary combustion chamber.

The core configuration of the waste dissolving device of the present invention lies in the construction of a stepped multi-stage furnace. That is, a sludge inlet, a yarn gas outlet, and a slag outlet are respectively formed, and a melting furnace having a multi-stage molten metal therein;

A plurality of molten blocks installed to partition the molten metal and having a slag overflow dam and a molten metal outlet;

Opening and closing means installed in the melting furnace to selectively open and close an outlet for discharging the molten metal;

It may be implemented including a heating means for heating the inside of the melting furnace and maintaining at a constant temperature.

In the present invention, when the sludge and flux are introduced into the furnace together and heated through the heating means with a burner so that the atmosphere temperature of the furnace is maintained in the range of about 1,300 ° C, the light slag becomes suspended and the suspended slag overflows, and then After flowing down the furnace, the melt is discharged to the outside, and the heavy melt can be separated and discharged through the melt outlet installed in each furnace.

At this time, in order to prevent the temperature of the furnace from dropping sharply by the sludge being injected, the sludge falls on the preheating molten metal to prevent cooling of the entire melt in the furnace, thereby maximizing thermal efficiency. In the melting furnace, the slag produced by the dissolved sludge and the flux is overflowed, and the melt stays inside, facilitating further heating of the newly introduced slag and the melt and separating the slag residue contained in the melt.

In homogenizing molten slag and melt are clearly differentiated and bisected and the melt is homogenized to have a fluidity of constant viscosity. The nutrient slag is overflowed and discharged to the outside, and the homogenized molten metal can be discharged in a timely manner by the discharge means.

1 is a cross-sectional view showing an example of a conventional melt treatment apparatus for waste;

2 is a cross-sectional view showing the configuration of another conventional melt treatment system of waste;

Figure 3 shows the configuration of an embodiment of a melter of the waste according to the present invention

Floor plan,

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a configuration for another embodiment of a waste melting apparatus according to the present invention

Floor plan,

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5.

<Description of the symbols for the main parts of the drawings>

20: melting furnace 21: side wall

22, 22a, 22b: molten metal 23: sludge inlet

24: combustion gas outlet 25: slag outlet

26: molten metal discharge furnace 27: slag ramp

30: molten block 31: slag overflow dam

32: molten metal outlet 40: heating means

41: hot water burner 42: molten metal discharge burner

50: opening and closing means 53: blower

54: valve 55 control unit

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the apparatus for melt treatment of sludge according to the present invention in more detail as follows.

<Example>

3 to 6, Figure 3 is a plan view showing a configuration of an embodiment of a waste treatment apparatus according to the present invention, Figure 4 is a cross-sectional view taken along line AA of Figure 3, 5 is a plan view showing another embodiment of the melt treatment apparatus of the waste according to the present invention, Figure 6 is a cross-sectional view taken along line BB of FIG.

Waste melting apparatus according to the present invention comprises a melting furnace 20, a molten block 30 and the heating means 40.

The melting furnace 20 is surrounded by side walls 21 made of refractory bricks on all sides, and has three stages of melt 22 composed of a preheated molten metal, a molten molten metal and a homogenizing molten metal having a predetermined space therein. 22a, 22b) are formed.

A sludge inlet 23 for injecting sludge is formed at one side wall of the melting furnace 20, and combustion gas generated when the sludge is melted by the heating means 40 through the sludge inlet 23. A combustion gas outlet 24 is formed at one side wall away from the sludge inlet 23 so as to be discharged to the outside of the melting furnace 20.

A gas circulation burner 42 is provided at an upper end of one side wall 21 of the melting furnace 20 to which the combustion gas outlet 24 is connected to the sludge inlet. The gas circulation burner 42 is to maintain a constant temperature inside the melting furnace.

The slag outlet 25 is formed in one side wall 21 of the melting furnace 20 to which the combustion gas outlet 24 is connected to allow the sludge to be melted in the molten metal 22 and the changed slag is discharged. A tapping burner 41 is installed on one side wall of the slag discharge port 25.

The molten block 30 is provided in the melting furnace 20 so as to be divided into three stages of the molten metal 22, 22a and 22b, the molten metal discharge path 26 and the slag slope 27.

The slag overflow dam 31 and the molten metal discharge port 32 are formed in the molten block 30 of these three stage molten metals 22, 22a, and 22b.

The slag overflow dam 31 is formed in a concave shape on the upper surface of the molten block 30 in one embodiment, the residual metal discharge port 32 is formed through the molten block 30.

The residual metal outlet 32 is formed at a position lower than the slag overflow dam 31 by a predetermined height.

The bottom surface of the space between the melt block 30 and the melting furnace 20 except for the three stages of the melt 22, 22a and 22b is inclined to smooth the flow of the slag toward the slag discharge port 25.

The heating means 40 is installed on the melting furnace 20 to heat the melting furnace 20 to a high temperature so that the atmosphere in the three stages of the melt 22, 22a, 22b is a high temperature, one embodiment of the present invention In order to heat the temperature inside the molten metal by installing three burners, the heating temperature is slightly different.

The melting furnace 20 is provided with opening and closing means 50 for selectively opening and closing the molten metal discharge port (32).

One embodiment of the configuration of the opening and closing means 50, as shown in Figures 3 and 4, the molten metal discharge burner 42 installed on the melting furnace 20 to correspond to the molten metal outlet 32 ) Includes a blower 53 for supplying air, a valve 54 for supplying and shutting off fuel, and a controller 55 for controlling operations of the blower 53 and the valve 54. .

Referring to the operation of the present invention configured as described above based on one embodiment of the opening and closing means as follows.

First, the molten object containing the combustible component and metals is input through the sludge inlet 23.

Then, when a predetermined time elapses by operating the burner, which is the heating means 40, the atmosphere in the molten metal 22 of the melting furnace 20 becomes a high temperature and the waste introduced is gradually melted.

Waste that begins to melt gradually changes to a slag state, and gradually begins to be discharged through the melt outlet 32.

At this time, the controller 55 drives the blower 53 constituting the opening and closing means 50 to close the through hole constituting the molten metal discharge port (32).

In the process of closing the molten metal outlet 32, the blower 53 is driven while the fuel valve 54 is blocked by the control of the control unit 55 so that a small amount of air is used to blow the molten metal discharge burner 42. The slag discharged through starts to solidify, and finally, the through hole constituting the molten metal outlet 32 is closed.

As described above, as the molten metal outlet 32 at a position lower than the slag overflow portion 31 is closed, the level of slag in the molten metal 22 is gradually raised to overflow through the slag overflow dam 31. Then, it is discharged through the molten block 30 and the slag discharge port 25 through the three stages of the molten metal (22, 22a, 22b).

On the other hand, the control unit 55 controls the air to be continuously ejected through the molten metal discharge burner 42 constituting the opening and closing means 50 so that the slag or more than a predetermined amount of the slag through the slag over-prow part 31 can be discharged.

When the slag overflows a predetermined amount or more through the slag overflow 31 as described above, the control unit 55 opens the fuel shutoff valve 54 constituting the opening and closing means 50 and starts the molten metal discharge burner 42. .

In this case, the molten metal outlet 32 is opened in the closed state and the molten metal is discharged.

Although not described in detail in the description of the operation of the present invention, the slag overflowing through the slag overflow dam 31 is also overflowed with the salts generated during melting of the waste is discharged.

As described above, according to the melt treatment apparatus of the sludge containing the combustible component according to the present invention, it can be understood that it can be processed in a structure different from the conventional method without being limited by the amount of moisture, flammability, and metals contained in the sludge. It does not need to install a lot of burners necessary for melting the waste, and does not need to adopt the electrical resistance type that requires a lot of facility cost, and provides a useful effect that can not form a salt outlet.

Claims (3)

In the melting apparatus having a heating means for heating the interior of the melting furnace to melt the waste flowing through the sludge inlet, A molten block partitioned in a smelting furnace and provided with an overflow dam so that slag flows into each molten metal and the melt does not overflow; It is installed on the molten block waste melting apparatus, characterized in that consisting of opening and closing means for selectively opening and closing the outlet for discharging the molten metal. The method of claim 1, The opening and closing means is installed on the melting furnace so as to correspond to the molten metal outlet, the fuel valve which can block the air of the molten metal discharge burner to enable cooling to the molten metal outlet; A blower for supplying air to the molten metal discharge part through the molten metal discharge burner; And a control unit for controlling the operation of the molten metal discharge burner, the blower, and the fuel valve. The waste melting apparatus according to claim 1, wherein a burner is further installed to maintain the temperature of the upper layer portion in the melting furnace.