KR100337378B1 - Useless Tire Incinerator for Small Boiler and its Ash Process Method - Google Patents

Abstract

The present invention relates to an apparatus and method for reprocessing waste tire incinerators for small scale heating, and more particularly, to an apparatus and method for waste tire incinerators for small scale heating, which can greatly reduce the amount of carbon monoxide generated and ash treatment time during ash treatment. It is about.

The present invention provides a reprocessing method for small-sized heating waste tires, in which a combustible material is completely combusted by injecting a combustible material during a reprocessing period in which carbon monoxide is intensively discharged.

In addition, an incinerator for carrying out the same, a combustion chamber into which waste tires are charged, a combustible material inlet disposed above and below the combustion chamber, an air heating induction pipe disposed on an inner circumferential surface, a burner disposed in a discharge passage connected to the heat exchanger, and It is characterized by comprising a feedback means for returning the air heated by the burner to the combustion chamber.

Description

Useless Tire Incinerator for Small Boiler and its Ash Process Method

The present invention relates to an apparatus and method for reprocessing waste tire incinerators for small scale heating, and more particularly, to an apparatus and method for waste tire incinerators for small scale heating, which can greatly reduce the amount of carbon monoxide generated and ash treatment time during ash treatment. It is about.

Generally, a device for utilizing waste tires as a heat source is composed of an incinerator for extracting primary fuel gas, a boiler for heating water using fuel gas, and an exhaust gas purification device for preventing environmental pollution sources. have. The main environmental pollutants emitted during incineration of waste tires are sulfur dioxide and carbon dust, which can be effectively removed by the wet method disclosed in Patent Application No. 98-28432 proposed by the present inventor. However, during the reprocessing period of fuel gas extraction, a large amount of carbon monoxide was detected in the exhaust gas, and the reprocessing time varies depending on the amount of spent tires, but it usually takes about 3 to 5 hours. However, carbon monoxide is not removed from the wet scrubber tower, and the concentration is high and the discharge time is long, which may be fatal to the human body including nausea and vomiting.

Such carbon monoxide is a colorless odorless poisonous gas that is fatal to the human body, unlike carbon dioxide generated during complete combustion. When the waste tire is burned, fuel gas is extracted by the rubber component in the waste tire, and a large amount of sulfurous acid gas is discharged. However, at the end of the combustion in which the rubber component is all dried and no fuel gas is extracted, only the ash of the waste tire remains in the exhaust gas. Was found to sharply decrease the content of sulfur dioxide while exponentially increasing the content of carbon monoxide (see Figure 1). However, unlike sulfur dioxide, carbon monoxide does not dissolve in water, so it cannot be removed by a wet purification method.

The end of the incineration of waste tires is called a reprocessing period. At this time, it is impossible to supply fuel to the boiler because no further fuel gas extraction is possible. Since only carbon monoxide, which is a pollutant, is emitted in the exhaust gas, the shorter the reprocessing period, the better. However, the waste tire heat-use device is usually charged with a weight of about 500 kg at a time, for a total of 15 hours of heating, including the last 3 to 5 hours of reprocessing period. Increasing the flow of air into the incinerator to reduce the reprocessing time increases the incomplete combustion and increases the carbon monoxide content in the exhaust gas rapidly. Therefore, it is common to reduce the air inflow during the reprocessing period.

It is an object of the present invention to provide an apparatus and method for reprocessing waste tire incinerators for small scale heating, which can greatly reduce the amount of carbon monoxide generated and the reprocessing time.

1 is a graph showing the carbon monoxide generation amount for the waste tire incinerator of the prior art and the present invention over time;

Figure 2 is a schematic cross-sectional view of the waste tire incinerator for small scale heating according to the present invention.

(Symbol description of main part of drawing)

1: waste tire 10: incinerator

20: fan 30: second via opening

35: first inlet 40: burner

50: fan 60: air heating induction pipe

70: heat exchanger 80: fan

45: discharge passage 100: combustion chamber

In order to achieve the above object, the present invention provides a method for reprocessing small-sized waste tire incinerator, which is disposed on the upper part of the combustion chamber in which waste tire is charged during reprocessing of the incinerated waste tire in which carbon monoxide is concentrated. Injecting a combustible material through at least one of the first inlet for injecting the combustible material into the combustion chamber, and the second inlet for injecting the combustible material into the combustion chamber inside the combustion chamber to input carbon monoxide. It provides a method for reprocessing waste tire incinerator for small scale heating, characterized in that the complete combustion to discharge.

In addition, according to the present invention, the first inlet for injecting a combustible material into the combustion chamber is disposed on top of the combustion chamber, the waste tire is charged therein, the air heating induction pipe disposed on the inner peripheral surface of the combustion chamber, the heat exchange of the rear end A burner disposed in the discharge passage connected to the gas, a return means for returning the air heated by the burner to the combustion chamber, and a second inlet disposed in the lower portion of the combustion chamber to introduce a combustible material into the combustion chamber. Provided is a reprocessing apparatus for small-sized waste tire incinerator for heating.

In addition, in the incinerator, the combustible material is added during the reprocessing period in which carbon monoxide is intensively discharged, thereby combusting the carbon monoxide with carbon monoxide to burn carbon monoxide.

The return means comprises a return tube for guiding the air heated by the burner of the discharge passage to the combustion chamber, and a return fan forcibly feeding back the heated air installed in the return tube to the combustion chamber.

(Example)

Attached Figure 1 is a graph showing the carbon monoxide generation amount for the waste tire incinerator according to the prior art and the present invention, Figure 2 is a schematic cross-sectional view of the waste tire incinerator for small scale heating according to the present invention.

The incinerator 10 of the present invention has a housing 15 forming a combustion chamber 100 into which the waste tire 1 is charged, and a combustible material, for example, diesel fuel, disposed above the combustion chamber 100. A first diesel fuel inlet 35 for the air, an air heating induction pipe 60 disposed at the inner circumferential surface of the housing 15 to induce heating of the combustion chamber internal air, and a discharge passage 45 connected to the heat exchanger 70. The burner 40 arranged and the return means 50 and 55 which return the air heated by the burner 40 to the combustion chamber 100 are comprised.

The return means 50 includes a return pipe 55 for guiding the air heated by the burner 40 of the discharge passage 45 to the combustion chamber 100, and a heated air installed in the return pipe 55 for the combustion chamber. It consists of the return fan 50 which forcibly feeds back to 100. As shown in FIG.

In addition, the incinerator 10 further includes a second diesel fuel inlet 30 disposed below the combustion chamber 100 and a fan 20 for introducing the injected diesel oil into the combustion chamber 100 together with cold air.

The operation of the reprocessing apparatus of the incinerator will be described below.

In the incinerator 10, when all the rubber components of the charged waste tire 1 are burned and the diesel fuel is input at the time when the fuel gas supplied from the incinerator 10 to the heat exchanger 70 of the boiler is stopped, the incinerator 10 Since the housing 15 and the discharge passage 45 are already heated to a high temperature, the vaporized and vaporized diesel gas is mixed with the gas of carbon monoxide generated during incomplete combustion of the ash and transferred to the heat exchanger 70.

At this time, when ignited by the heat exchanger 70, that is, the burner 40 at the inlet of the boiler, diesel gas is burned and carbon monoxide is oxidized to carbon dioxide so that there is no carbon monoxide in the exhaust gas. As such, the input of diesel oil during reprocessing can increase the input amount of cold air, thereby greatly reducing the reprocessing time.

According to the experiment, the reprocessing time, which takes about 5 hours when charging 500 kg of waste tires, can be made within 1 hour by injection of diesel fuel. The larger the inflow of air, the lighter steam is diluted and the combustion state by the burner 40 located in front of the boiler is worsened, so that the content of carbon monoxide is increased in the exhaust gas. The amount of diesel oil that is added is increased. Therefore, the air inflow and diesel flow should be optimized according to the size of the device.

The way of diesel injection may be introduced from the bottom through the second diesel inlet 30 of the incinerator 10 together with the cold air as shown in FIG. 2, or from the ash through the first diesel inlet 35 regardless of the cold air. You may. According to the results of the experiment, the case of feeding upward through the first diesel fuel inlet 35 is compared to the case of the diesel fuel required for reprocessing compared to the case of feeding with cold air by the fan 20 from the bottom through the second diesel fuel inlet 30. While saving amounts, it has been shown to be ineffective for removing carbon monoxide.

In addition, when the hot air heated by the burner 40 instead of the cold air is returned to the combustion chamber 100 through the return pipe 55 by operating the return fan 50, the thermal efficiency of the boiler 70 also increases, and It was found that the time required for treatment and the amount of light oil used for reprocessing could be reduced more effectively.

In addition, the hot air heated by the burner 40 is returned to the combustion chamber 100 through the return pipe 55, and at the same time, the diesel gas is supplied together with the cold air by the fan 20 through the second diesel fuel inlet 30. It was found that the most effective way to reduce carbon monoxide emissions.

The change in time with respect to the amount of carbon monoxide generated in each of the above cases is shown in FIG. 1.

As described above, according to the present invention, the combustion of carbon monoxide mixed with the combustible vapor is completely performed by adding a combustible material during reprocessing remaining during incineration of the waste tire, thereby greatly reducing the amount of carbon monoxide generated and reprocessing time.

Claims (3)

In the reprocessing method of waste tire incinerator for small scale heating, A first inlet disposed at an upper portion of a combustion chamber in which waste tires are charged therein during reprocessing of incinerated waste tires in which carbon monoxide is concentrated, and a first inlet for injecting combustible materials into the combustion chamber; Re-treatment method of a small-sized waste tire incinerator for heating, characterized in that the combustion of the carbon monoxide completely through the input of the combustible material through at least one of the second inlet for injecting the combustible material into the combustion chamber. A first inlet disposed at an upper portion of a combustion chamber into which waste tires are charged, and configured to introduce a combustible material into the combustion chamber; An air heating induction pipe disposed on an inner circumferential surface of the combustion chamber; A burner disposed in a discharge passage connected to a heat exchanger at a rear end thereof, Feedback means for returning air heated by the burner to the combustion chamber; Is disposed in the lower portion of the combustion chamber re-processing apparatus of a small-sized heating waste incinerator for the combustor comprising a second inlet for introducing a combustible material into the combustion chamber. The method of claim 2, wherein the return means comprises a return tube for guiding the air heated by the burner of the discharge passage to the combustion chamber, and a return fan for forcibly feeding back the heated air to the combustion chamber. Reprocessing apparatus of small-sized waste tire incinerator for heating.