KR100277217B1 - Exhaust Gas Purification System of Waste Tire Incinerator - Google Patents

Abstract

The present invention relates to an exhaust gas purifying apparatus of a waste tire incinerator, and in particular, it can be applied to small scale heating such as a vinyl house by using hot gas generated by incineration of waste tires, and also to burn combustion gas generated when waste tires are incinerated. The present invention relates to an exhaust gas purifying apparatus of a waste tire incinerator capable of effectively purifying and preventing air pollution.

The present invention provides an exhaust gas purifying apparatus for a waste tire incinerator for purifying pollutants contained in an exhaust gas generated in a waste tire incinerator and discharged through a small heat exchanger, wherein the combustion gas passing through the heat exchanger is discharged to the outside. An exhaust tower for forming a vertical passage therein, a water tank communicating with a lower end of the exhaust tower, the water tank having a predetermined amount of purified water, spraying means for circulating the purified water to be sprayed from the top of the exhaust tower, and an upper side of the exhaust tower. Reaction facilitating means for delaying the contact area and time between the combustion gas and the sprayed water, and disulfide gas contained in the combustion gas is dissolved as the gypsum precipitates through the reaction facilitating means. Characterized in that consisting of a limestone loading layer.

Description

Exhaust Gas Purification System of Waste Tire Incinerator

The present invention relates to an exhaust gas purifying apparatus of a waste tire incinerator, and in particular, it can be applied to small scale heating such as a vinyl house by using hot gas generated by incineration of waste tires, and also to burn combustion gas generated when waste tires are incinerated. The present invention relates to an exhaust gas purifying apparatus of a waste tire incinerator capable of effectively purifying and preventing air pollution.

In general, according to the Ministry of Environment's survey, 9.75 million were generated annually in 1996, with 17.5 million units, which is 2 years in 4 years. It is estimated to have doubled, and in 1998, 23.43 million are expected, and in 2000, about 2.82 million are expected.

On the other hand, this exponentially increasing waste tire is composed of eight components with high energy, including rubber, carbon, fiber, and steel, and its energy is much higher than 8,000㎉ / kg. .

In addition, when pyrolyzing tires, 50% of oil and 10% of gas, which are intermediate between light oil and light heavy oil, can be extracted, which has attracted attention as industrial energy. Accordingly, methods and devices for utilizing waste tires have been developed.

For example, waste rubber using waste tires can be mixed in asphalt pavement, or energy generated from incineration of waste tires can be recovered and used as a cement heat source, significantly reducing energy costs. Pyrolysis of waste tires can lead to gasoline and kerosene. Oil, which is an intermediate material, is used as a fuel for boilers, and carbon black is recycled to separate tires.

However, as such, harmful gases such as sulfurous acid gas generated in the process of obtaining thermal energy and other extracts using waste tires are generated, and when the combustion gas leaks into the air, there is a problem of causing serious air pollution.

Therefore, in order to overcome such air pollution, the combustion gas generated during incineration is reheated to completely burn, or sulfur dioxide (SO2) is dissolved in water (H2O) by using the characteristic of sulfur dioxide (SO2) by using water (H2O). ) And sulfur dioxide (SO2) was separated from the combustion gas and discharged into the air.

However, according to the related art, the combustion gas generated in the incinerator has to pass through a large charge bed in order to react smoothly with water, so it is not easy to develop a small wet device, so it is suitable for small heating such as a plastic house. There was a problem that did not.

Therefore, the present invention has been made in view of the problems of the prior art, the purpose of which can be applied to small-scale heating such as vinyl house by using the hot gas generated by incineration of waste tires, and also generated during incineration of waste tires The present invention provides an exhaust gas purifying apparatus for a waste tire incinerator that can effectively purify combustion gas to prevent air pollution.

1 is a schematic perspective view showing an exhaust gas purification apparatus of a waste tire incinerator according to the present invention;

2 is a schematic view showing an exhaust gas purification apparatus of a waste tire incinerator according to the present invention;

3 is an enlarged perspective view showing a charge of an exhaust gas purifying apparatus of a waste tire incinerator according to the present invention;

Figure 4 is a schematic diagram showing the concentration of combustion gas for each position in the exhaust tower of the exhaust gas purification apparatus according to the present invention,

5 is a schematic view showing a limestone stirring device in the exhaust gas purifying apparatus according to the present invention;

6 is a schematic view showing another embodiment of the water tank of the exhaust gas purifying apparatus according to the present invention;

7 is a schematic diagram showing the concentration change according to the stirring of limestone and the addition of hydrogen peroxide solution.

(Explanation of symbols for the main parts of the drawing)

10; Incinerator 10a; Space

11; Burner 13; Charging

15; Waste tire 17; First gas transfer pipe

19; A second gas transfer pipe 20; Boiler

20a; Space 21; 1st water pipe

23; Second water pipe 25; Heating tube

30; Exhaust gas purifying apparatus 31; Exhaust tower

33,430,530; Water tank 33a; 1st exhaust

33b; Second exhaust 35; Water pipe

35a; Sprinkler 37; vent pipe

40; Green house 41; Heating tube

50; Charge 52; Contact piece

60; Limestone loading layer 60a; Limestone

70; Carbon dust 80; Purified water

90; Gypsum 100; Combustion gas

200; Rotary stirrer 300; septum

310; Removal hole 330; Strainer

350; Discharge pipe

In order to achieve the above object, the present invention is a waste tire incinerator exhaust gas purification apparatus for purifying pollutants contained in the exhaust gas generated in the waste tire incinerator and discharged to the outside through a small heat exchanger, the heat exchanger An exhaust tower forming a vertical passage for discharging the combustion gas passed to the outside, a water tank communicating with a lower end of the exhaust tower and having a predetermined amount of purified water, and a spray for circulating and spraying the purified water from the top of the exhaust tower Means, a reaction promoting means for delaying the contact area and time between the combustion gas and the sprayed water and disposed above the exhaust column, and sulfur dioxide contained in the combustion gas while the reaction promoting means is dissolved therein. Waste tire element characterized in that it consists of a limestone loading layer for depositing the produced sulfurous acid as gypsum It provides an exhaust gas purifier to.

Therefore, in the present invention, as described above, it can be effectively applied to small-scale heating such as a vinyl house, and also it is possible to easily remove the pollutants generated when the waste tires are incinerated.

(Actual example)

Hereinafter, preferred embodiments of the present invention as described above will be described in more detail with reference to the accompanying drawings.

1 is a schematic perspective view showing an exhaust gas purification apparatus of a waste tire incinerator according to the present invention, FIG. 2 is a schematic view showing an exhaust gas purification apparatus of a waste tire incinerator according to the present invention, and FIG. 4 is an enlarged perspective view showing a charge of an exhaust gas purification device of a waste tire incinerator, FIG. 4 is a schematic view showing the concentration of combustion gas in each location of the exhaust tower of the exhaust gas purification device according to the present invention, and FIG. 5 is an exhaust gas according to the present invention. 6 is a schematic view showing a limestone stirring device in a gas purifier, and FIG. 6 is a schematic view showing another embodiment of a water tank of an exhaust gas purifying device according to the present invention, and FIG. 7 is a concentration according to stirring of limestone and addition of hydrogen peroxide water. Schematic diagram showing a change.

As shown in the configuration of the exhaust gas purification apparatus of the waste tire incinerator according to the present invention as follows.

Referring to FIG. 1, the waste tire incineration apparatus incinerates the waste tire 15 to generate a high-temperature combustion gas 100, and heats cold water therein by the high-temperature combustion gas 100. Boiler 20 and the exhaust gas purifier 30 for removing the pollutants contained in the combustion gas 100 heat-exchanged in the boiler 20 and discharged to the outside, in the boiler 20 Heat-exchanged hot water is connected to the boiler 20 through the water pipes 21 and 23 so that heat exchange takes place while circulating the evacuation body such as, for example, the horticultural facility house 40.

Referring to Figure 2 in more detail the configuration of the waste tire incinerator as follows. First, the incinerator 10 forms a waste tire charging hole 13 on one side, and forms a space portion 10a into which the waste tire 15 can be charged, and the waste tire 15 on the lower side thereof. The burner 11 for heating the furnace is formed.

In order to transfer the high-temperature / high pressure combustion gas 100 generated from the heated waste tire 15 to the heating tube 25 of the boiler, one side penetrates through the upper end of the incinerator 10 and the other end is inside the boiler. A first gas transfer tube 17 communicating with the heating tube 25 installed in the tube and communicating with the other side of the heating tube 25 and communicating the combustion gas 100 with the central portion of the exhaust tower 31. The second gas transfer pipe 19 is formed, but in order to facilitate the transfer of the combustion gas 100, the second gas transfer pipe 19 is provided with a blower B1.

Meanwhile, in order to transfer hot water charged in the boiler inner 20a heated through the heating tube 25 to the heating tube 41 of the vinyl house, one side is formed in communication with one side of the upper portion of the boiler 20. The other side forms a first water pipe 21 formed in communication with one side of the heating tube 41 installed inside the plastic house 40, and further recycles the hot water to the boiler 20 on the other side of the heating tube 41. One side is formed in communication and the other side is formed in communication with the second water pipe 23 at the bottom of one side of the boiler, and circulated in the second water pipe 23 to effectively circulate the water recycled through the heating pipe 41 of the vinyl house. Install the pump (P1).

In addition, in order to increase the contact area with the water, the combustion gas 100 introduced through the second gas transfer pipe 19 has a plurality of charges 50 so as to have a height of about 4 m in the inner central portion of the exhaust tower 31. ) And the second gas transfer pipe 19 so that the combustion gas 100 flowing through the second gas transfer pipe 19 soaks from the lower portion of the plurality of charges 50. It is preferable to set the position so as to communicate with the bottom of In addition, a lower portion of the charge 50 is a limestone loading layer 60 for removing sulfur (S) components of sulfurous acid gas by precipitation and a predetermined distance from the water tank 33 formed in communication with the exhaust tower 31 underneath. It is loaded to have.

On the other hand, the upper side of the exhaust tower 31 is formed with a sprinkling pipe 35 for spraying water downward, that is, toward the charge 50, and the other end of the sprinkling pipe 35 is formed at the central portion of one side of the water tank. It is extended to communicate, and the circulation pump (P2) is formed in the lower portion of the sprinkling pipe 35 to recycle the water charged in the water tank into the exhaust tower 31 through the sprinkling pipe (35) have.

The plurality of charges 50 filled in the exhaust tower 31 may include water sprayed from the upper side of the plurality of charges 50 while the combustion gas 100 is discharged to the outside through the exhaust tower 31. In order to have a long contact time, that is, to increase the contact area, as shown in FIG. have.

In addition, the charge 50 may be formed to form, for example, a spherical or polygonal shape and the material of the charge 50 is any non-flammable material having a certain shape, such as plastic or ceramic, gravel It is also possible.

Meanwhile, in order to remove the carbon dust suspended on the purified water charged in the water tank 33, a first exhaust port 33a having a predetermined diameter is formed on one side, and the gypsum submerged in the purified water is removed. In order to form a second exhaust hole (33b) in the lower side of the water tank, respectively.

If described in detail the effects and effects of the present invention configured as described above.

First, a plurality of waste tires are cut into pieces so as to be easily incinerated, and the plurality of waste tires 15 are charged into the space portion 10a of the incinerator 10 through the charging holes 13 of the incinerator 10, and then burners ( 11) is operated to heat the waste tire 15 to a constant temperature.

Accordingly, as the waste tire 15 is heated, the combustion gas 100 of high temperature / high pressure is generated, and the combustion gas 100 passes through the first gas transfer pipe 17 to the heating tube 25 of the boiler 20. Will pass through.

At this time, the water charged into the boiler 20, the space portion 20a is heated by the heating tube 25 is raised by a suitable temperature, the water is raised to the vinyl house 40 through the first water pipe The heating is performed along the installed heating tube 41 to heat the vinyl house 40.

After that, the water passing through the heating pipe 41 is lowered in temperature and is returned to the boiler 20 through the second water pipe 23 by the circulation pump P1 connected to the second water pipe 23. Circulated.

On the other hand, the combustion gas 100 passing through the heating tube 25 is transferred to the exhaust tower 31 along the second gas transfer pipe by the blower B, and then permeates from the lower portion of the charge 50 and rises upward. Done. In this case, the combustion gas 100 has an area in contact with the water sprayed from the water spray pipe 35 by the charge 50 is enlarged, so that sulfur dioxide (SO2) contained in the combustion gas 100 is water. Passed through the limestone (CaCO3) of the limestone loading layer 60 while dissolved in.

At this time, as can be seen in Figure 4 changes in concentration (pH) over time for the combustion gas (G1) before passing through the charge 50 and the combustion gas (G2) after passing through the charges remarkably It can be seen that the difference, and since the combustion gas is no longer generated when the combustion is completed, the concentration (pH) of the combustion gas (G1, G2) is the same value.

Subsequently, sulfurous acid (SO 2 H 2 O) dissolved in water passes through the limestone (60a) and reacts with the limestone (CaCO 3) to form gypsum (CaSO 4) 90 and communicates with the water tank 33 formed under the exhaust column 31. It is charged).

At this time, a part of the gypsum (CaSO4) is attached to the surface of the limestone (CaCO3) over time, and the reactivity with sulfurous acid (SO2H2O) is significantly reduced by the gypsum coated on the limestone surface when using the purification device for a long time. It is important that the gypsum (CaSO4) is continuously removed from the surface of the limestone 60a at an appropriate hydraulic pressure before it dries, and the water flow is maintained without the limestone 60a being exposed to the water loaded in the water tank 33. It is also important to maintain.

On the other hand, the purified water 80 is circulated back into the exhaust tower 31 through the sprinkling hole 35a of the sprinkling pipe 35 by a circulation pump P2 installed connected to the bottom of the sprinkling pipe 35. do.

In addition, the carbon dust 70 contained in the combustion gas 100 flows into the water tank 33 by the water sprayed from the water spray pipe 35 and is charged into the water tank 33. Become rich on the stomach.

In this way, the carbon dust 70 floating on the water is collected through the carbon dust removal hole 33a at an appropriate time, and the specific gravity is also high to remove the plaster (CaSO4) that has settled on the bottom of the water tank at an appropriate time. The combustion gas 100 purified through an iterative process as described above may be discharged into the air through the exhaust pipe 35 of the exhaust tower 31 to prevent air pollution due to pollution gas.

Meanwhile, as shown in FIG. 5, the limestone 60a is charged on the inner side while rotating while a part of the purified water charged in the water tank 430 is inserted and coated on the surface of the limestone 60a as time passes. It is also possible to install a rotary stirrer 200 for stirring the limestone (60a) to remove the gypsum (CaSO4).

In addition, as another method for dissolving gypsum, as shown in FIG. 6, a discharge pipe 350 is installed at one side of the water tank 530, and one side of the water tank 430 is alternately up and down. A plurality of fixed barrier ribs 300 are formed, and a predetermined limestone 60a is inserted between the barrier ribs. In this case, hydrogen peroxide (H 2 O 2) may be added to the water tank 430 as a solvent for dissolving gypsum.

In addition, a gypsum separation filter 330 is formed in the lower portion of the water tank 530 to precipitate the gypsum formed after the sulfite gas solution reacts with the limestone to the bottom of the water tank. Many removal holes 310 can be formed. Therefore, the purified water is circulated back to the exhaust tower while passing through the water tank configured as described above.

As shown in FIG. 7, the experimental results for the case of stirring the limestone (A1), the case of adding hydrogen peroxide to the sulfurous acid gas (A2) and the case of not stirring the limestone (A3) are shown. Likewise, when the limestone is not stirred (A3), the reaction rate is significantly lower than when the limestone is stirred (A1), and when hydrogen peroxide is added (A2), an effective chemical reaction can be obtained without mechanical stirring. Can be.

On the other hand, the circulated water passed through the water tank can prevent or cure deadly powdery mildew on roses, so there is no need to use a separate pesticide to prevent environmental pollution.

As described above, in the present invention, it is easy to apply to small-scale heating using waste tires, and there is an advantage in that environmental pollution can be prevented beforehand by purifying the harmful gas generated during incineration of waste tires with a simple device.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications will be possible by those who have the same.

Claims (8)

In the waste tire incinerator exhaust gas purification apparatus for purifying pollutants contained in the exhaust gas generated in the waste tire incinerator and discharged to the outside through a small heat exchanger, An exhaust tower forming a vertical passage for discharging the combustion gas passing through the heat exchanger to the outside; A water tank communicating with a lower end of the exhaust tower and having a predetermined amount of purified water; Spraying means for circulating the purified water and spraying it from the top of the exhaust tower; A reaction promoting means disposed above the exhaust tower and configured to delay a contact area and time between the combustion gas and water sprayed; An exhaust gas purifying apparatus for waste tire incinerators, comprising a limestone loading layer for depositing sulfurous acid produced by dissolving sulfurous acid gas contained in combustion gas while passing through the reaction promoting means. The water tank of claim 1, wherein the water tank comprises: a first exhaust port for removing deposits deposited on the bottom of the tank; An exhaust gas purification device for a waste tire incinerator, further comprising a second exhaust port for removing carbon dust suspended at an upper portion of the tank. The exhaust gas purifying apparatus of the waste tire incinerator according to claim 2, wherein one end of the sprayed fishery connected to the water tank is connected to an intermediate position between the first and second exhaust pipes. The exhaust gas purifying apparatus of the waste tire incinerator according to claim 1, wherein the reaction promoting means comprises a plurality of fillers made of a flame retardant material in at least one of a sphere, a polygon, and an oval. The waste tire incinerator according to claim 1, wherein the limestone loading layer further comprises limestone stirring means rotatably formed at both sides of the lower portion of the exhaust tower so that a part of the limestone loading layer is inserted into the water tank and the limestone is stirred. Exhaust gas purification system. According to claim 1, wherein the water tank is a plurality of partition walls are formed at predetermined intervals and are alternately opened up and down inside, A predetermined limestone charged between the partition walls, And a strainer for filtering the gypsum produced by reacting with the limestone to settle on the bottom of the water tank. The exhaust gas purifying apparatus of the waste tire incinerator according to claim 1, wherein the limestone loading layer is disposed between the lower end of the reaction promoting means and the water tank. 8. The exhaust gas purifier of the waste tire incinerator according to claim 1, 5, 6 or 7, wherein the purified water further includes a dissolving agent for removing gypsum coated on the surface of limestone.