KR100666043B1 - Air supply in the combustion chamber of the combustor - Google Patents

Abstract

The present invention relates to an air supply device in a combustion chamber of a combustor for incineration of industrial wastes such as waste plastics and waste tires. The present invention relates to a sufficient amount of air necessary for combustion into the combustion chamber during the incineration of industrial wastes. To ensure complete combustion.

To this end, a combustion chamber 11 composed of a cylindrical inner cylinder 29 for burning incinerators, an inlet 12 for injecting incinerators into the combustion chamber, and discharged sludge produced by combustion in the combustion chamber In the combustor provided with a sludge discharge port 13 and the bottom plate 14 on which the incineration is placed, a rotary shaft 15 in the form of a pipe rotatably vertically installed in the center of the combustion chamber and rotating the rotary shaft A power transmission means, an air supply hole 19a fixed to the upper end of the rotary shaft and formed along the outer circumferential surface and rotating together with the rotary shaft; It is composed of a rotating nozzle 20 is formed with a plurality of air supply holes (20a).

Description

Air supply in the combustion chamber of the combustor

1 is a schematic view showing the configuration of a general waste treatment system

Figure 2 is a longitudinal sectional view showing the installation state of the nozzle in the conventional combustor

3 is a perspective view of a combustor to which the present invention is applied;

4 is a longitudinal cross-sectional view of FIG.

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

Explanation of symbols for the main parts of the drawings

11 combustion chamber 12 inlet

13: sludge outlet 14: bottom plate

15: rotating shaft 19: diffusion cylinder

19a, 20a, 26a: air supply hole 20: rotating nozzle

25, 27, 32: air supply pipe 26: chamfered surface

28: air tank 29: inner cylinder

30: air chamber 31: outer cylinder

33: temperature sensor

The present invention relates to a combustor for incineration of industrial wastes such as waste plastics and waste tires, and more particularly, by supplying a sufficient amount of air necessary for combustion to the inside of the combustion chamber by vortexing in the process of incineration of industrial wastes. It relates to an air supply in a combustion chamber of a combustor to allow complete combustion.

In general, the amount of industrial waste is increasing day by day due to the development of the industry, such as recycling, landfill, incineration.

Of course, when the generated waste is selected and recycled, it is most preferable because it prevents the recycling of resources and contamination of soil, air, water and the like, but the waste that cannot be recycled is inevitably buried or incinerated.

However, in the case of landfill, there is a problem of polluting the soil, in case of incineration, there is a problem of polluting the air, but the treatment of harmful gases (carbon monoxide, nitrogen oxides, etc.) and dust generated during the incineration process does not cause air pollution. In recent years, waste is mainly incinerated.

1 is a schematic view showing the configuration of a general waste treatment system, wherein a dry combustor 200 for primary combustion of waste (hereinafter referred to as "incineration") and a gas generated during combustion in the dry combustor are secondary burned. Secondary combustor 300 to be completely removed, hot water boiler 400 for heating hot water by using the heat generated by the secondary combustor, dust of relatively large specific gravity contained in the exhaust gas discharged through the hot water boiler. Cyclone 500 to remove the, and the bag filter 600 is installed in the rear of the cyclone to remove the fine dust contained in the exhaust gas.

The inside of the cylindrical case (not shown) constituting the distillator 200 is provided with a combustion means such as a burner to burn the incineration.

The upper part of the case is formed with an inlet for continuously injecting the incineration to be burned, the upper side is formed with a supply hole for supplying the unburned gas generated in the combustion process to the secondary combustor (300).

In addition, the distillation nozzle 1 having a plurality of nozzles is arranged at equal intervals so as to supply the air necessary for burning the incineration to the lower side of the case, and the dust generated after combustion is disposed below the distillation nozzle 1. Fallout hole is formed so that) can free fall.

2 is a longitudinal cross-sectional view showing the installation state of the nozzle in the conventional combustor, the supply pipe (2) which is supplied with air by an air supply means such as a blower fan is fixedly installed at equal intervals in the dry dryer (100). A cylindrical nozzle body 3 having an inlet hole 4 vertically inside the supply pipe is fixed to the supply pipe, and a top of the inlet hole 4 is radially formed so that the injection hole 5 passes through the inlet hole. .

Therefore, when the incinerator to be burnt is put in the state of the combustor 200, and the air is supplied to the inside of the combustion chamber through the supply pipe 2 by an air supply means such as a blower fan, combustion is performed in the combustion chamber. As a result, harmful gases and dust are generated and discharged to the outside.

However, such a conventional waste treatment system is supplied with a very small amount of air into the combustion chamber through the dry distillation nozzle, so that it is impossible to completely burn it. Therefore, a separate secondary combustor for secondary combustion of exhaust gas is inevitably installed on one side of the distillation unit. Since the equipment cost was excessively required, the installation area occupied a lot of space.

Therefore, in view of the above problems, the relevant companies are investing a lot of research and development costs to supply a sufficient amount of air in the dryer to achieve complete combustion without installing a separate secondary combustor.

However, such a combustor also has a structure in which dry distillation nozzles are installed on the side wall or the bottom of the combustion chamber so as to supply sufficient air to the inside of the combustion chamber, but since the incineration is stacked in the area where combustion is actively performed, the side wall or the bottom of the combustion chamber Even if a dry nozzle was installed in the combustion chamber, sufficient air was not supplied to the inside of the combustion chamber, causing a blind spot of combustion where combustion occurred only on the surface of the incineration.

Accordingly, incineration of the incineration in the combustion chamber is not sufficiently made, the combustion rate is lowered, so that unburned dust and harmful gases due to incomplete combustion are excessively generated, so that a second combustion chamber for completely burning unburned dust and harmful gases is provided. There was a problem that should be.

The present invention has been made to solve such a conventional problem, by improving the structure of the nozzle and the air supply path so that a sufficient amount of air supply to the interior of the combustion chamber, even if the incineration is stacked in the combustion chamber separate secondary The purpose is to enable complete combustion inside the combustion chamber without having a combustion chamber.

According to an aspect of the present invention for achieving the above object, a combustion chamber consisting of a cylindrical inner cylinder for burning incineration, an inlet for injecting incineration into the combustion chamber, and sludge generated while combustion is performed in the combustion chamber. A combustor comprising a sludge outlet for discharging and a bottom plate on which the incinerator is placed, comprising: a rotary shaft in a pipe shape vertically rotatably installed in the center of the combustion chamber; power transmission means for rotating the rotary shaft; and an upper end of the rotary shaft. The air supply hole is fixed to the outer circumferential surface is formed to rotate with the rotating shaft, the diffusion cylinder is fixedly installed through the diffusion cylinder on top of the diffusion cylinder, the outer peripheral surface of the combustor, characterized in that consisting of a rotating nozzle formed with a plurality of air supply holes An air supply in the combustion chamber is provided.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 5 as an embodiment.

3 is a perspective view of a combustor to which the present invention is applied, FIG. 4 is a longitudinal cross-sectional view of FIG. 3, and FIG. 5 is a cross-sectional view taken along a line A-A of FIG. 4, and the present invention incinerates into a combustion chamber 11 for burning an incinerator. An inlet 12 for injecting water is formed and a lower portion of the combustion chamber is provided with a sludge discharge port 13 for discharging sludge (not shown) generated during combustion, and an incineration material is disposed on the bottom of the combustion chamber. The base plate 14 on which this is mounted is provided.

The rotary shaft 15 in the form of a pipe is installed in the center of the combustion chamber 11 so as to be rotatable vertically so that the rotary shaft rotates forward and backward by a power transmission means. In FIG. 4, the bevel gear 16a is fixed to the lower end of the rotation shaft 15 and the power transmission shaft 17 rotates by a driving source (not shown) such as a motor. Another bevel gear 16b which is engaged with the fixed bevel gear 16a is fixed so that the rotating shaft 15 rotates as the pulley 18 fixed to the other end of the power transmission shaft 17 rotates. have.

However, the power according to the driving of the driving source may be configured to be decelerated through the reduction gear and transmitted to the rotating shaft, but is not necessarily limited thereto.

At this time, the rotary shaft 15 is installed to be exposed to the upper portion of the bottom plate 14 and the air supply hole (19a) is formed in the rotary shaft along the outer circumferential surface is wrapped so that the diffusion cylinder 19 to rotate with the rotary shaft The rotary nozzle 2 is fixed to the upper portion of the diffusion cylinder and the upper surface is closed and a plurality of air supply holes 20a are formed on the outer circumferential surface thereof.

The air supply holes 19a and 20a are formed in the diffusion cylinder 19 and the rotating nozzle 20 while maintaining a predetermined interval up, down, left, and right.

The reason why the diffusion cylinder 19 is located at a point close to the bottom plate 14 is that the main combustion is performed at a portion close to the bottom plate, thereby reducing the volume of the combustion site according to the installation of the diffusion cylinder 19. At the same time, to provide more air to the main combustion site.

In addition, the lower part of the rotating shaft 15 is supported by a bearing 22 installed inside the casing 21, and the middle part is supported by a bushing 24 installed inside the case 23 and the casing 21. The central air supply pipe 25 through which external air flows is connected.

Therefore, as the outside air is supplied to the inside of the rotating shaft 15 through the central air supply pipe 25, the outside air is supplied to the combustion chamber through the air supply holes 19a and 20a formed in the diffusion cylinder 19 and the rotating nozzle 20. It is supplied to the inside of (11).

Although the diffusion cylinder 19 may be formed in a cylindrical shape, a chamfered surface 26 is formed on the bottom surface of the diffusion cylinder 19 in order to induce diffusion of supply air so that a vortex is formed inside the combustion chamber 11. And it is more preferable to form a plurality of air supply holes (26a) in the chamfered surface so that the supply air hits the bottom plate 14 to diffuse.

Accordingly, when external air is ejected through the air supply hole 26a formed in the chamfered surface 26 while the diffusion cylinder 19 is rotated by the rotation shaft 15, the external air collides with the bottom plate 14 to diffuse. As a result, the vortex is caused.

On the other hand, a separate air tank 28 connected to the air supply pipe 27 is formed in the lower portion of the combustion chamber 11 and the inner cylinder through the air tank 28 through the through hole 28a outside the combustion chamber 11 The outer cylinder 31 which forms the air chamber 30 between the 29 is provided, The wall surface of the inner cylinder 29 supplies air in the air tank 28 to the inside of a combustion chamber as shown in FIG. Air supply pipes 32 are provided at regular intervals.

Accordingly, the combustion chamber through the air supply pipe 32 provided along the circumferential surface of the inner cylinder 29 from the center of the combustion chamber 11 to the outside by the diffusion cylinder 19 and the rotating nozzle 20 rotated during combustion of the incineration. It is possible to supply the external air from the outside to the inside of the.

In addition, the temperature sensor 33 is installed inside the combustion chamber 11 so that the temperature sensor senses the temperature above the temperature set in the control unit 37 (about 1000-1300 ° C.), thereby controlling the power of the power transmission means. More preferably, it is configured to turn off the rotation shaft 15 to be temporarily suspended.

As a result, the internal temperature of the combustion chamber 11 is excessively increased, thereby preventing the durability of refractory and the like from being lowered, and the power consumption of the motor, which is the power source for rotating the rotating shaft, is reduced.

In the drawings, reference numeral 34 denotes a discharge lever which is fixed to a rotating shaft and rotates together to push the sludge generated during combustion to the sludge outlet side, 35 is a check hole for identifying the combustion state of the combustion chamber from the outside, and 36 Is a refractory installed fixed at regular intervals to protect the inner cylinder.

Referring to the operation of the present invention configured as described above is as follows.

First, the incineration of the incineration is made in the combustion chamber 11 as the ignition is performed while the incinerator to be incinerated into the combustion chamber 11 is introduced through the inlet 12. When the rotary shaft 15 rotates and the external air is supplied into the rotary shaft 15 and the air tank 28 through the air supply pipes 25 and 27 by the driving of the blower 38, the inside of the rotary shaft 15 A part of the external air supplied to the furnace is swiveled in the process of being supplied from the center of the combustion chamber 11 to the outside through the air supply holes 19a and 20a formed in the diffusion cylinder 19 and the rotating nozzle 20, so that the combustion chamber ( At the bottom of 11) the main combustion takes place.

As described above, some of the external air supplied into the diffusion cylinder 19 during the main combustion in the lower portion of the combustion chamber 11 is an air supply hole 26a formed in the chamfer 26 of the diffusion cylinder 19. Since the external air is blown out through) to the bottom plate 14 and diffused in the direction of the arrow of FIG. 4 to cause the vortex flow, thereby causing the harmful gas and dust generated during the combustion of the incineration moves upwards Because of the delay in the combustion chamber without rapid discharge by the vortex flow, noxious gases and dust are secondary burned in high temperature environments.

On the other hand, the external air supplied to the air tank 28 through the air supply pipe 27 of the inner cylinder 29 through the air chamber 30 and the air supply pipe 32 during the combustion of the incineration in the combustion chamber 11 Since the incineration of the incinerator is further supplied from the outside to incinerate the incineration, the dead zone of combustion is eliminated when the incineration is incinerated, thereby realizing the complete combustion of the incinerator.

As described above, the combustor of the present invention has the following advantages over the prior art.

First, the diffusion cylinder is located at a point close to the bottom plate where the main combustion is made, so that sufficient air is supplied by the diffusion cylinder instead of reducing the combustion area, thereby maximizing the combustion efficiency on the main combustion unit.

Second, the air supply hole is formed in the chamfer surface provided on the bottom of the diffusion cylinder, the main combustion is made in the lower part of the combustion chamber and then the harmful gas and dust in the upper part of the combustion chamber under the high temperature vortex flow combustion environment in the process of discharge of harmful gas and dust. Secondary combustion of the dust is achieved, which makes it possible to realize complete combustion.

Third, the external air is supplied to the outside from the center of the combustion chamber in accordance with the rotation of the rotary shaft and at the same time sufficient external air is supplied from the inner cylinder to the center side, it is possible to realize complete combustion.

Fourth, when the temperature sensor senses the internal temperature of the combustion chamber, the rotation of the rotating shaft is temporarily stopped when the temperature sensor is higher than the set temperature, thereby preventing the internal combustion chamber from overheating and cutting off the power of the power transmission means. The power consumption of the operation is reduced.

Claims (4)

A combustion chamber composed of a cylindrical inner cylinder for burning incinerators, an inlet for injecting incinerators into the combustion chamber, a sludge outlet for discharging sludge generated during combustion in the combustion chamber, and a bottom on which the incinerator is placed In the combustor equipped with a plate, a rotary shaft in the form of a pipe rotatably vertically installed in the center of the combustion chamber, a power transmission means for rotating the rotary shaft, and an air supply hole is formed along the outer circumferential surface and fixed to the upper end of the rotary shaft, An air supply apparatus in a combustion chamber of a combustor, comprising: a diffusion cylinder rotating together, and fixedly installed through the diffusion cylinder at an upper portion of the diffusion cylinder, and a rotating nozzle having a plurality of air supply holes formed on an outer circumference thereof. The method of claim 1, An air supply device in the combustion chamber of the combustor, characterized in that the chamfer surface is formed on the bottom surface of the diffusion cylinder and the chamfer surface is provided with an air supply hole for the supply air hits the bottom plate to diffuse. The method of claim 1, Combustion chamber through an air tank formed at the lower part of the combustion chamber, an air supply pipe connected to the air tank to supply supply air, and installed outside the combustion chamber through the air tank to form an air chamber, and an air supply pipe installed in the inner cylinder. Air supply device in the combustion chamber of the combustor, characterized in that it further comprises an outer cylinder for supplying air into the interior of the. The method of claim 1, And a temperature sensor installed inside the combustion chamber so that power of the power transmission means is turned off as the temperature sensor detects an abnormal temperature set in the control unit.

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