KR100684585B1 - Integrated waste pyrolysis device and waste disposal method using the same - Google Patents

Abstract

The present invention relates to a waste incinerator in which a combustion furnace, a waste incinerator for pyrolyzing waste, and a dust collecting device are integrally implemented.

Incinerators where waste is incinerated; A combustion furnace for heating the incinerator; And is installed at the upper end of the incinerator, by using the waste heat of the lower incinerator to generate a steam to collect the gas generated from the incinerator is formed a surplus sludge tank integrally,

By using steam to effectively collect the waste gas to form a surplus sludge, it can be installed in a narrow place because it is integrally implemented, it is possible to effectively use the waste heat used for combustion, it is possible to save energy.

Description

Integrated waste pyrolysis apparatus and waste disposal method using the same

1 is a cross-sectional view of an integrated waste treatment apparatus according to the present invention.

2 is a side view of the integrated waste treatment apparatus according to the present invention.

3 is a cross-sectional view of an integrated waste treatment apparatus according to another embodiment of the present invention.

The present invention relates to a waste incineration apparatus, and more particularly, to a waste incinerator in which a waste incinerator and a dust collector for pyrolyzing organic waste are integrated.

As is well known, as the society develops rapidly and the life improves, interest in the environment is increasing, and there are various methods of research on the method of recycling the waste and the method of treating the waste to reduce the environmental pollution. It is actively progressing. In the case of the organic waste, it is incinerated by high temperature heat or composted using earthworm, aerobic and anaerobic microorganisms, etc.

The incineration method has a merit of treating a large amount of waste in a short time, but has a disadvantage in that waste disposal costs are high and resources cannot be recycled, whereas the recycling method of composting can treat organic waste at low cost. Although there is an advantage in that it is possible to recycle organic waste, there is a problem that rapid waste disposal is impossible, a lot of site for the composting process is required, and odor is generated during the composting process.

Conventional organic waste incineration apparatus has a method in which the organic waste is burned directly by the flame from the burner and incinerated, and the heating chamber or the heating drum is heated to a high temperature by the combustion heat of the burner, and the organic waste introduced into the heating chamber or the heating drum is heated. The waste is indirectly heated in a high temperature heating chamber or heating drum to be incinerated.

The direct combustion type incinerator has the advantage that the structure of the device is considerably simplified because of the simple combustion method, but incomplete combustion causes a large amount of environmental pollutants contained in the exhaust gas, and it is difficult to remove such environmental pollutants. Problems have arisen and their use has been greatly reduced.

On the other hand, the indirect combustion type incinerator (pyrolysis apparatus) is separately treated with the exhaust gas from the burner generated during combustion and the pyrolysis gas from the organic waste, so that it is easy to remove environmental pollutants. Due to the advantage that the pyrolysis gas generated in the various forms can be recycled, its use is expanding gradually.

However, incineration waste treatment apparatuses such as pyrolysis treatment apparatuses have a problem that the harmful gas is discharged to the outside air to pollute the human body or the surrounding environment. Exhaust gases also contain substances that affect global warming, such as dioxins and PFCs (CF4, C2F6, SF6, NF3, C3F8, etc.), which not only incinerate, but also Post-processing is also a big issue.

Accordingly, the development of the post-treatment process is being made, and a method of passing the surplus sludge tank before the final discharge or the secondary combustion of the pyrolysis gas before discharge is mainly developed.

In Korea Utility Model Registration No. 0226953 or Korea Utility Model Registration No. 0227664, the method is finally discharged through the surplus sludge tank to the atmosphere to remove environmental pollutants from the emitted gas.

On the other hand, Auto M Haiti applicant in the Republic of Korea Patent Publication No. 2006-25065 discloses a waste incineration system consisting of a pyrolysis device and a device for treating harmful gases generated during pyrolysis. The system includes a pyrolysis furnace that primarily pyrolyzes waste; A mixing furnace for mixing the gas generated in the pyrolysis furnace with air; A combustion furnace for secondary incineration of the mixed gas; A dust collector for collecting dust of the gas and waste secondary incinerated in the combustion furnace; A scrubber for cleaning gas collected in the dust collector; And a neutralizer for treating harmful gas in the gas passed through the scrubber, and the like, wherein the combustion method is replaced with a plasma combustion method.

However, such pyrolysis apparatuses have a problem of having to invest in large-scale facilities such as surplus tanks, plasma combustion apparatuses, and dioxin catalytic combustion apparatuses together with modern combustion facilities. Accordingly, there is a continuing need for a simpler and simpler type of pyrolysis incinerator.

It is an object of the present invention to provide a novel pyrolysis incineration apparatus in which a combustion plant and a dust collector are integrated.

Another object of the present invention is to provide a novel pyrolysis-type incineration apparatus equipped with a dust collecting facility capable of collecting dust using waste heat generated during combustion.

Still another object of the present invention is to provide a novel pyrolysis-type incineration method for collecting cracked gas and waste gas by generating steam using waste heat generated during combustion.

Laminated integrated pyrolysis incineration apparatus of the present invention for achieving the above object is

Incinerators where waste is incinerated;

A combustion furnace installed at a lower end of the incinerator to heat the incinerator; And

A surplus sludge tank installed at an upper end of the incinerator to collect steam generated from the incinerator by generating steam using waste heat of the lower incinerator;

Characterized in that consisting of.

In the present invention, the surplus sludge tank further comprises a coagulation aid to agglomerate the gas collected by the water vapor. In the practice of the present invention, the coagulant aid may be used a known coagulant aid, there is no particular limitation. In the present invention, the surplus sludge tank is prepared to boil a variety of materials, such as industrial citric acid, soda, rice hull, rice wine, and sawdust, food in addition to the coagulant aid in water to produce the activated surplus sludge do.

In the present invention, the surplus sludge tank may be stacked in multiple stages so that the surplus sludge tank may be collected more completely.

In the present invention, members such as stones and gravel are laid on the bottom of the incinerator so that heat can be easily supplied to the inside of the waste pile to be burned.

In the present invention, the combustion furnace can be heated by electricity or sparks. In the practice of the present invention, the combustion furnace may be a gas combustion device that directly heats the bottom of the incinerator with a flame.

In the present invention, the bottom surface of the incinerator may be manufactured using a good thermal conductivity material, preferably iron, so that the heat of the combustion chamber can be easily transferred. In addition, the upper surface of the incinerator may also be manufactured using a material having a good thermal conductivity, preferably an iron plate so that heat can be easily transferred to the surplus sludge tank. In the present invention, the bottom surface of the surplus sludge tank may be manufactured using a material having a good thermal conductivity, preferably an iron plate so that heat generated in the lower incinerator may be easily transferred to the surplus sludge tank.

In the present invention, a connection passage is formed between the incinerator and the redundant sludge tank to allow gas generated in the incinerator to enter the redundant sludge tank. In one embodiment of the invention, the connecting passage may be a pipe-type pipe connecting the incinerator and the side and the side of the surplus tank.

In the present invention, the incinerator may be provided with an air inlet for supplying air to the waste pile. The air flowing through the air inlet is formed to oxidize the waste and blow out the ash remaining after decomposition to enter the surplus sludge tank through the connection passage.

In one aspect, the present invention is to treat waste in a pyrolytic incineration method,

Indirectly heating the waste to pyrolyze it in an incinerator;

Generating steam from a surplus tank using heat generated from the incinerator; And

It comprises the step of collecting the waste gas generated during pyrolysis using the steam.

In the present invention, the pyrolysis is performed in contact with an incinerator in which waste is heated by heating. In the practice of the present invention, the pyrolysis may be made with air introduced from the outside, and the ashes decomposed by the air and heat are suspended and introduced into the surplus tank.

In the present invention, the step of generating steam in the tank of the surplus sludge is heated by the heat transferred from the incinerator, the heat is transferred through the bottom surface of the surplus sludge laminated with the lower incineration chamber and in contact with the upper portion of the incineration chamber, By heating and boiling water in the tank.

In the present invention, the step of collecting the waste gas using the water vapor is made by collecting the waste gas passing through the upper portion of the surplus sludge tank by water vapor and falling into water. In the water, a flocculant aid is mixed to collect waste gas and made into activated sludge, and sodium citrate is mixed to neutralize the activated sludge.

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

That is, the laminated integrated pyrolysis apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIGS. 2 and 3, the stacked integrated pyrolysis incinerator according to the preferred embodiment of the present invention is capable of incineration and dust collection in one integrated device, and incinerators in which waste is incinerated ( 10); A combustion furnace 20 installed at a lower end of the incinerator 10 to heat the incinerator 10; And a surplus sludge tank 30 installed at an upper end of the incinerator 10 to generate steam using the waste heat of the lower incinerator 10 to collect gas generated from the incinerator 10 to form a surplus sludge. It is a configuration made.

That is, the stacked integrated pyrolysis incinerator is formed by sequentially forming the combustion furnace 10, the incinerator 20, and the surplus sludge tank 30 in a cylindrical body 100 formed of three layers as a partition wall, and a support 51. It is supported by, and the support 51 can be attached to the wheel 52 to move, it is possible to install the ground fixing device 53 to be fixed to the ground.

In the combustion furnace 10, a gas combustion device 11 is installed to heat the upper incinerator 20, and the gas combustion device 11 includes a plurality of gas ignition nozzles 13. The gas pipes 12 which are present are arranged at regular intervals. The gas combustion device 11 is connected to an external gas supply device (not shown) through a gas valve 14 connected to the bottom of the combustion furnace 10.

Here, the opening and closing port 15 may be formed on the side wall of the combustion furnace 10 so as to observe the inside of the combustion furnace 10 and ignite the gas nozzle 13. In particular, the ceiling of the furnace 10, which is the bottom 28 of the incinerator 20, is composed of an iron plate so that it can be easily heated by a flame.

In addition, the incinerator 20 is a place where waste is decomposed and incinerated by heat, and a part of the bottom is covered with gravel 21 so that the waste 26 can be placed thereon, and the waste 26 to be pyrolyzed at the top thereof. A plurality of air nozzles 23 are installed to inject air. The air nozzle 23 is supplied with compressed air through an air valve 27 formed on one sidewall of the incinerator 20 to inject air into the waste.

Here, the side wall of the incinerator 20 is provided with one or more connection pipe paths 27 connected to the surplus sludge tank 30, for example, two at right and left. Through the connecting pipe 24, the gas generated during the thermal decomposition of the waste 26 and the compressed air and waste dust injected from the air nozzle 23 exit the incinerator 20 to enter the surplus sludge tank 30 do. The connection pipe 24 is formed with a pipeline valve 25 to be opened and closed as needed, the connection pipe 24 is connected to the outside from the side of the incinerator 20 to facilitate the external operation of the surplus tank ( 30) to the side wall.

In particular, the connecting pipe 24 is formed at the upper end of the side wall of the incinerator 20 so as to use the raised airflow formed by heating. In addition, the connection pipe 24 is through the side wall at the top of the surplus sludge tank 30 so that the water 36 filled in the surplus sludge tank 30 does not flow into the incinerator 20 in the connection pipe 24. Connected.

In addition, the surplus sludge tank 30 has water so as to form the surplus sludge by collecting the combustion gas, air, waste dust, and soot flowing into the surplus sludge tank 30 through the connection pipe 24 with water vapor. It is filled. Here, the water 36 filled in the surplus sludge tank 30 has a coagulation aid added thereto so that the collected air, waste dust, soot, combustion gas, etc. can form the surplus sludge.

Here, the coagulant aid may be used as a drug added to increase the coagulation effect, sodium carbonate, limestone, quicklime, calcareous lime, caustic soda, activated silica, sodium alginate, CMC, etc., commercially available. In addition to the coagulant aid, in order to maintain a neutral pH, industrial citric acid, soda, etc. are further included. In particular, in order to produce the activated surplus sludge, in addition to the flocculent aid and the pH adjuster, various materials such as rice hulls, film dust, and sawdust, food and the like can be added.

In addition, water vapor which collects the combustion gas, air, waste dust, and soot is generated by boiling water filled in the surplus tank 30. In particular, the boiling of the water is made by the heat conducted to the bottom surface 38 of the surplus sludge tank 30 which is the ceiling surface of the incinerator 20.

In addition, the surplus sludge tank 30 is formed on the side of the water level gauge 35 for observing the water level inside the surplus sludge tank 30, the discharge port 35 is formed on the upper surface, the water And an inlet 37 for replenishing the additives.

On the side walls of the combustion furnace 10, the incinerator 20, and the surplus sludge tank 30, glass openings 17, 27, and 37 for internal observation and maintenance are formed, respectively, and a thermometer for knowing the temperature inside. Are fixed respectively.

In addition, the stacked integrated pyrolysis incinerator operates as follows. First, after opening the gas valve 14 and injecting gas, the gas nozzle 11 is lighted and the bottom surface of the incinerator 20 is heated. When the bottom surface of the incinerator 20 heats up and the temperature of the incinerator 20 rises, the opening and closing hole 28 formed on the side surface of the incinerator opens, and the waste is injected. The waste is directly deposited on the gravel 21 or the bottom surface of the bottom of the incinerator, and then the opening and closing hole 28 is closed to burn the waste.

The decomposition of the waste proceeds mainly by pyrolysis. Oxygen can be introduced by opening the air valve to increase the decomposition rate during the pyrolysis process, and the injected air is sufficient to reach the inside of the accumulated waste together with the space formed between the gravel 21. do.

When the incinerator ceiling (ie, the bottom of the activated sludge tank) is sufficiently heated by the heat transferred from the incinerator 20 during the incineration, when the water of the activated sludge tank is boiled, the cracked gas is discharged to be discharged from the incinerator 20. Open the pipeline valve 25 formed in the pipeline (24).

The combustion gas introduced into the activated sludge tank 30 through the connecting pipe 24 is collected and condensed by steam formed by boiling of water, and is collected in the surplus sludge tank. Aggregates to form excess sludge.

After all the waste combustion gases are collected by the steam, only the steam and the air escape through the outlet formed on the upper surface. The outlet can be further attached to the additional collecting device, there is no particular limitation.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

As shown in FIG. 5, the activated sludge tank may be composed of two layers, and further forms a connection path connecting the lower activated sludge tank 60 to the upper active sludge tank 70, thereby providing a more perfect connection. It is possible to capture harmful gases from incinerators. If the temperature of the upper activated sludge tank 70 is not heated enough to boil water, an additional heating device may be attached to boil the water.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and their technical spirit.

According to the present invention, it is possible to effectively form the waste gas by collecting the waste gas by using water vapor, it is implemented in one piece can be installed in a narrow place, it is possible to effectively use the waste heat used for combustion to save energy Waste incinerators were provided.

In addition, according to the present invention, a method of producing activated surplus sludge is provided by mixing surplus sludge with various wastes.

Claims (9)

Incinerators where waste is incinerated; A combustion furnace for heating the incinerator; And A surplus sludge tank installed at an upper end of the incinerator to collect steam generated from the incinerator by generating steam using waste heat of the lower incinerator; Thermal decomposition type incinerator, characterized in that consisting of. The pyrolysis incineration apparatus according to claim 1, wherein the surplus sludge tank further comprises a flocculating aid. The pyrolysis incineration apparatus according to claim 1, wherein the industrial sludge tank further includes industrial citric acid soda, rice hull, makgeolli flakes, sawdust, food waste, or a mixture thereof to prepare activated surplus sludge. . The pyrolysis incineration apparatus according to claim 1, wherein the surplus sludge tank is installed in two stages. The pyrolysis incinerator according to claim 1, wherein the bottom of the incinerator is stone or gravel. The pyrolysis incineration apparatus according to claim 1, wherein a connection pipe is formed between the top of the side wall of the incinerator and the top of the side wall of the redundant sludge tank. The pyrolysis incineration apparatus according to claim 1, wherein an air injector is installed at an upper end of the incinerator. Indirectly heating waste to pyrolyze in an incinerator; Generating water vapor in a surplus tank using heat generated in the incinerator; and Collecting the waste gas generated during pyrolysis using the water vapor Waste treatment method comprising a. 9. The method of claim 8, wherein the surplus sludge tank comprises a flocculating aid.

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