KR200279070Y1 - Incinerator with an inclined fixation grate - Google Patents

Abstract

The present invention relates to an incinerator equipped with an inclined tube-type fixed grate, and more particularly, it can be burned evenly while the waste is dropped by its own weight in the incinerator, and prevent the formation of clinker due to the deposition of the waste and overheated combustion It relates to an incinerator provided with a sloped water pipe-type fixed grate.

The purpose of the present invention is to arrange the plurality of water pipe-type fixed grate in multiple stages on the inclined surface of the incinerator so that the waste can be burned evenly while falling by its own weight. In addition, by supplying cooling water with an inclined surface, it is possible not only to prevent overheating and clinker generation due to waste deposition, but also to regenerate combustion gas to minimize harmful components, thereby improving combustion efficiency and operating reliability. It is to provide an incinerator equipped with an inclined water pipe fixed grate.

The construction of the present invention for achieving the above object is, in the incinerator for burning the waste conveying apparatus and the waste conveying apparatus for transporting the waste flowing into the waste inlet of the hopper, the incinerator body (1 Cooling outer wall 30 formed inclined to one side of the main combustion chamber (2) so that the waste can easily fall by its own weight; A plurality of water pipe-type fixed gratings 40 provided in the cooling outer wall 30 in multiple stages and arranged in parallel in a tubular shape so that waste can be burned while being evenly distributed without being deposited; A stirring transfer device (50) provided at an upper portion of the water pipe-type fixed grate (40) to prevent the accumulation of waste and to carry out the stirring so as to perform complete combustion; A combustion ash combustion chamber (60) combusted to completely remove unburned carbon contained in the combustion ash of the waste dropped by the stirring transfer device (50), and to discharge the combustion ash by the combustion ash transport device (61); A reburn chamber (70) for reducing the harmful components by recombustion of the combustion gas flowing upward by the supporting burner (71) provided on the main combustion chamber (2); A countercurrent type combustion gas discharge port (80) provided at an upper portion of the reburn chamber (70) so as to discharge combustion gas and radiant heat in the opposite direction to the conveying direction of the waste via the reburn chamber (70); The cooling outer wall 30 and the water pipe-type fixed grating 40 is integrally provided with an overheat prevention means for preventing clinker generation by overheating combustion of the waste.

Here, the overheat preventing means is provided in the cooling outer wall (30) body so that the cooling water flows, the cooling water pipe (31) for exchanging the phase change steam to the water separator by heat exchange with the combustion heat of the waste; It consists of a coolant header 41 connected to one end of the water pipe-type fixed grate 40 so that a portion of the coolant flowing into the coolant pipe 31 can be discharged to the outside via the water pipe-type fixed grate 40 It would be desirable to be.

Description

Incinerator with an inclined fixation grate}

The present invention relates to an incinerator equipped with an inclined tube-type fixed grate, and more particularly, it can be burned evenly while the waste is dropped by its own weight in the incinerator, and prevent the formation of clinker due to the deposition of the waste and overheated combustion It relates to an incinerator provided with a sloped water pipe-type fixed grate.

Generally, waste synthetic polymer wastes such as plastics, rubbers, and resins have low moisture content and high calorific value, so the incineration of the incinerator is incomplete combustion because the gas and air mixtures generated on the surface of the waste are not smoothly mixed. It is easy to become.

In order to solve the above problems, high-speed combustion air injection is required, and about 2.5 excess air is required, so that dust generation is severe, thermal efficiency is lowered, and generation of pollutants such as NOX is increased. Phosphorus overheating may cause material damage.

Accordingly, in recent years, incineration is not directly performed in the treatment of waste synthetic polymer waste, but a dry incineration method according to a primary dry gasification process using pyrolysis and a second complete combustion process is used.

Since the dry incineration method is an indirect incineration method in which a partial combustion layer is formed with an amount of air less than the theoretical air amount, combustible gas is generated through dry gasification through primary pyrolysis using this heat, and the gas is combusted in a combustion chamber. Incineration at a low excess air ratio is possible compared to direct incineration.

For example, in case of direct incineration, the excess air ratio is about 2 to 2.5, but indirect incineration dry distillation incineration is about 1.5 to 2. Accordingly, the dry distillation incineration completely burns the produced dry distillation gas, so that the amount of pollutant is generated less, and various types of combustion heat utilization methods can be selected.

On the other hand, the above-mentioned ventilation type dry distillation incinerator of the distillation incinerator is to incinerate the polymer wastes filled in the incinerator by drying → pyrolysis → gasification → combustion.

At this time, the waste put into the incinerator is converted to ash by the combustion of the lowermost layer and discharged downward, and the air required for partial combustion is continuously supplied from the lower side to maintain the combustion layer.

That is, by supplying the insufficient air less than the theoretical air to the lower portion of the waste layer to form a partial combustion layer to form a heat insulating portion of the glowing state, and generates combustion gas and heat such as CO ₂ , H ₂ O.

This heat is again used as heat of reaction of pyrolysis and gasification to produce combustible gases such as CO, N ₂ and traces of CH ₄ (methane gas).

To burn this gas, it must be drawn to the combustion chamber through the outlet of the upper part of the dry gasifier.

That is, the gas flows upward because it is made upward.

However, the flammable gas produced by the upward discharge of the flammable gas contains condensable tar and oil as it passes through the waste bed, and also loses heat in the process and is led to the combustion chamber with a low temperature gas of 200 ° C. or lower. do.

The condensable tar and oil components continue to condense due to heat loss in the pipeline, attach and accumulate with dust inside the pipeline, eventually blocking the pipeline.

In addition, since the condensable tar or oil is not combustible, when it is burned in the combustion chamber, the content of soot and pollutants in the exhaust gas increases.

Therefore, it is necessary to discharge the flammable gas, but to re-burn it to 850 ℃ or more to minimize the content of condensable tar and oil.

The incinerator system other than the above upflow type dry distillation incinerator, when the waste is incinerated, the combustion surface area decreases as the input waste is deposited, and the combustion speed is slowed, and the waste conveyance is insufficient, resulting in an overheated combustion state. The incidence of was high.

In addition, since the waste is not completely burned to the bottom of the incinerator, a problem occurs such that a lot of unburned material is generated in the combustion material.

The present invention is devised to solve the above problems, the object of the present invention is to arrange the plurality of water pipe fixed grate in multiple stages on the inclined surface of the incinerator can be burned evenly while falling by its own weight. By stirring and transporting the waste to prevent the waste from being deposited by the stirring transport device, and by providing the cooling water with the inclined surface, it is possible to prevent the overheating and the clinker generation due to the deposition of the waste, and to reburn the combustion gas. It is to provide an incinerator equipped with an inclined tube-type fixed grate that can minimize the harmful components and improve combustion efficiency and operation reliability.

The construction of the present invention for achieving the above object is, in the incinerator for burning the waste conveying apparatus and the waste conveying apparatus for transporting the waste flowing into the waste inlet of the hopper, the incinerator body (1 Cooling outer wall 30 formed inclined to one side of the main combustion chamber (2) so that the waste can easily fall by its own weight; A plurality of water pipe-type fixed gratings 40 provided in the cooling outer wall 30 in multiple stages and arranged in parallel in a tubular shape so that waste can be burned while being evenly distributed without being deposited; A stirring transfer device (50) provided at an upper portion of the water pipe-type fixed grate (40) to prevent the accumulation of waste and to carry out the stirring to perform complete combustion; A combustion ash combustion chamber (60) combusted to completely remove unburned carbon contained in the combustion ash of the waste dropped by the stirring transfer device (50), and to discharge the combustion ash by the combustion ash transport device (61); A reburn chamber (70) for reducing the harmful components by recombustion of the combustion gas flowing upward by the supporting burner (71) provided on the main combustion chamber (2); A countercurrent type combustion gas discharge port (80) provided at an upper portion of the reburn chamber (70) so as to discharge combustion gas and radiant heat in the opposite direction to the conveying direction of the waste via the reburn chamber (70); The cooling outer wall 30 and the water pipe-type fixed grating 40 is integrally provided with an overheat prevention means for preventing clinker generation by overheating combustion of the waste.

Here, the overheat preventing means is provided in the cooling outer wall (30) body so that the cooling water flows, the cooling water pipe (31) for exchanging the phase change steam to the water separator by heat exchange with the combustion heat of the waste; It consists of a coolant header 41 connected to one end of the water pipe-type fixed grate 40 so that a portion of the coolant flowing into the coolant pipe 31 can be discharged to the outside via the water pipe-type fixed grate 40 It would be desirable to be.

1 is a cross-sectional view showing the internal configuration of the incinerator provided with the inclined water pipe fixed grate according to the present invention,

Figure 2 is a partially enlarged perspective view showing a cooling outer wall and a water pipe-type grating according to the present invention,

Figure 3 is a partially enlarged cross-sectional view showing a waste transport apparatus according to the present invention,

4 is a view as seen from "A-A" in FIG.

<Description of Symbols for Major Parts of Drawings>

1: incinerator body 2: main combustion chamber

3: ignition burner 4: ignition burner monitoring window

5: combustion monitoring window 10: hopper

11: waste inlet 20: waste conveying device

22: push rod 30: cooling outer wall

30a: step 31: cooling water pipe

32: cooling water inlet 33: water vapor outlet

40: water pipe fixed grating 41: cooling water header

50: stirring feed device 60; Combustion combustion chamber

61: combustion material conveying device 62: combustion material discharge port

63: check-in door 70: reburn chamber

71: supporting burner 80: combustion gas outlet

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

1 is a cross-sectional view showing the internal configuration of the incinerator provided with a sloped water pipe fixed grate according to the present invention, Figure 2 is a partially enlarged perspective view showing a cooling outer wall and a water pipe-type fixed grate according to the present invention, Figure 3 Is a partially enlarged cross-sectional view showing a waste transport apparatus according to the present invention, Figure 4 is a view as seen from "AA" of FIG.

As shown in the figure, the incinerator according to the present invention is a hopper 10 having a waste inlet 11 so as to inject waste, and a waste transfer device 20 for transferring waste introduced into the hopper 10. ) Is provided on one side of the incinerator body (1).

The incinerator body 1 has a cooling outer wall 30 inclined at about 45 ° on one side of the main combustion chamber 2 so as to be easily dropped by its own weight, and the cooling outer wall 30 in multiple stages. It is provided, but a plurality of tube-type fixed grate 40 and arranged in parallel in a tubular shape so that the waste is not deposited, evenly distributed and combusted, and is provided on the top of the tube-type fixed grate 40 to deposit the waste It is composed of a stirring transfer device 50 for stirring and conveying to prevent and at the same time complete combustion.

Here, the water pipe-type fixed grate 40 is a plurality of integrally connected in a tubular shape in order to increase the combustion surface area, these fixed grate 40 is stepped mounted on the cooling outer wall 30 in its own weight Waste falling by passing through the water pipe-type grate 40 is a structure that can be evenly burned.

Then, the combustion unit is completely burned to remove unburned carbon contained in the combustion material of the waste falling by the stirring transfer device 50, and the lower part of the main body 1 to discharge the combustion material by the combustion material transfer device 61. Combustion ash combustion chamber 60 provided in the combustion gas flowing upwards by the combustion burner 71 provided in the upper combustion chamber (2) and the upper combustion chamber is provided to reduce the harmful components again to 850 ℃ or more Reflux combustion gas outlet 80 provided in the upper portion of the reburn chamber 70 to discharge combustion gas and radiant heat in the reverse direction of the conveying direction of the waste via the reburn chamber 70 and the reburn chamber 70. And an overheating prevention means integrally provided on the cooling outer wall 30 and the water pipe-type fixed grating 40 to prevent clinker generation by overheating combustion of waste.

The overheat preventing means is provided inside the cooling outer wall 30 so that the coolant can flow, and the coolant pipe 31 for discharging the phase-changed water vapor to the separator by heat exchange with the heat of combustion of the waste, and the coolant pipe ( 31 is composed of a coolant header 41 connected to one end of the water pipe-type grate 40 so that a part of the cooling water flowing into the 31 is discharged to the outside via the water pipe-type grate.

Here, it is provided as a pneumatic cylinder of the waste transfer device 20 and provided with a push rod 22 at the rod end to facilitate the transfer of the waste, the stirring transfer device 50 and the combustion material transfer device 61 is hydraulic It is preferable to adopt a cylindrical method, but the components operated inside the incinerator body 2 are made of heat-resistant steel that is resistant to heat.

The stirring transfer device 50 operates sequentially by time control, but is configured to operate from the stirring transfer device at the bottom.

An ignition burner (3) for ignition required for the initial ignition of waste is provided in the main combustion chamber (2), and an ignition burner monitor capable of determining whether ignition is normally performed after the waste is put into the wall of the main combustion chamber (2). The window 4 and the combustion monitoring window 5 for catching a combustion state are provided, respectively.

Referring to the operation and effects of the present invention configured as described above according to the waste combustion process, the waste introduced into the hopper 10 is transferred to the incinerator body 1 by the waste transfer device 20.

A rod 22 is provided at the rod end of the waste transporting device 20 to easily transport the waste.

Here, the main combustion chamber 2 of the incinerator body 1 is supplied with an appropriate amount of air necessary for combustion, and the volatile component which is easily burned in the waste layer is ignited by the ignition burner 3.

Waste transported to the main combustion chamber (2) is burned while passing through the step (30a) of the cooling outer wall 30 inclined at about 45 °, and the casing fixed grate 40 is installed in a cascade of steps. The fixed grate 40 causes the waste, ie, the fuel bed, to start burning, and thermal energy generated as a result of the combustion reaction of the incineration surface Lgnition Front, which is the surface of the fuel bed, is transferred to the surface below the front of the fuel bed. As the moisture contained in evaporates and dries, combustion continues under the surface layer.

At this time, the agitation and conveyance of the waste is made by the stirring transfer device 50, and passes through the water pipe-type fixed grate 40 arranged in parallel in the tubular shape is effectively burned.

In other words, the fixed grate 40 is a lattice shape of the upper and lower perforations, the combustion surface area is large and consists of a multi-stage staircase, so that the waste is dried and burned as it is, the combustion speed is high, and the stirring transfer device 50 The waste is not deposited by the fire and is gradually burned and dropped by its own weight. The waste pipe is passed through the fixed grating 40 and is dispersed to facilitate incineration, and at the same time, combustion is evenly performed to improve combustion efficiency.

In addition, the combustion gas flowing into the reburn chamber 70 above the main combustion chamber 2 is burned again at 850 ° C. or more by the supporting burner 71 to reduce harmful components, and thereafter, the reburn is reversed to the conveying direction of the waste. Combustion gas and radiant heat are discharged to the countercurrent combustion gas outlet 80 provided in the upper part of the chamber 70.

Meanwhile, cooling water is automatically supplied to the cooling water pipe 31 connected to the cold steel outer wall 30 and the water pipe grating 40 by gravity from a cooling water tank (not shown), and a part of the supplied cooling water is heat of combustion of waste. Heat-exchange with the water phase changes into water vapor and flows into a water separator (not shown) through the water vapor outlet 33, and the remaining cooling water is collected and discharged to the cooling water header 41 via the water pipe-type grating.

Waste accumulation phenomenon generated in the existing incinerator type by the action of the stirring transfer device 50 and the cooling water, and the combustion surface area is reduced and the combustion speed is slowed down, resulting in a superheated combustion state to generate the clinker It is possible to solve the problem that the unburned and unburned materials were generated,

The waste combustor via the water pipe-type fixed grate 40 is completely incinerated in the combustion combustion chamber 60 at the bottom to completely remove the unburned carbon contained in the combustor, and then, by the combustion material transfer device 61. It is transported to the storage tank without being deposited.

The incinerator according to the present invention can evenly combust waste by the water pipe-type fixed grate 40, prevent the accumulation of waste and clinker generation by the stirring transfer device 50 and the overheating prevention means, and burn the combustion material. Incineration is completely incinerated to remove unburned carbon from the reburn chamber (60), and the combustion gas is burned again at 850 ° C. in the reburn chamber (70) above the incinerator body (1) to reduce harmful components.

As described above, specific embodiments of the present invention have been described in detail, but those skilled in the art to which the present invention pertains may make various modifications without departing from the scope of the present invention.

Therefore, the scope of the present invention is not limited to the above-described embodiment, but should be determined by the equivalents of the claims, as well as the utility model registration claims described below.

As described above, according to the present invention, the surface of the cooling wall has a relatively large combustion surface area, and a plurality of water pipe-type fixed gratings are provided in multiple stages so that the combustion speed is high. There is an advantage that it can be easily dispersed and evenly burned.

In addition, the agitation transfer apparatus is agitated to prevent waste from being deposited, and a cooling outer wall is provided in a water-cooled manner to prevent overheating and clinker generation by waste deposition.

In addition, the combustion gas is reburned to above 850 ℃ by the combustion burner in the reburn chamber to minimize the harmful components to discharge the combustion gas, and the combustion of waste combustibles in the combustion reburn chamber is carried out to completely burn the unburned carbon contained in the combustion ash. There is an environmentally friendly advantage by eliminating.

Claims (2)

In the waste conveying device for transporting the waste flowing into the waste inlet of the hopper and incinerator for burning the waste transported by the waste transporting device, A cooling outer wall (30) formed at one side of the main combustion chamber (2) of the incinerator body (1) so as to be inclined so that waste can be easily dropped by its own weight; A plurality of water pipe-type fixed gratings 40 provided in the cooling outer wall 30 in multiple stages and arranged in parallel in a tubular shape so that waste can be burned while being evenly distributed without being deposited; A stirring transfer device (50) provided at an upper portion of the water pipe-type fixed grate (40) to prevent the accumulation of waste and to carry out the stirring to perform complete combustion; A combustion ash combustion chamber (60) combusted to completely remove unburned carbon contained in the combustion ash of the waste dropped by the stirring transfer device (50), and to discharge the combustion ash by the combustion ash transport device (61); A reburn chamber (70) for reducing the harmful components by recombustion of the combustion gas flowing upward by the supporting burner (71) provided on the main combustion chamber (2); A countercurrent type combustion gas discharge port (80) provided at an upper portion of the reburn chamber (70) so as to discharge combustion gas and radiant heat in the opposite direction to the conveying direction of the waste via the reburn chamber (70); It is provided integrally with the cooling outer wall 30 and the water pipe-type fixed grate 40 is provided with an inclined water pipe-type fixed grate characterized in that it consists of overheat prevention means for preventing clinker generation by overheated combustion of waste. Incinerator. The method of claim 1, wherein the overheat prevention means, A cooling water pipe (31) provided inside the cooling outer wall (30) so that cooling water can flow, and discharging the phase-changed water vapor to a water separator by exchanging heat with the combustion heat of the waste; It consists of a coolant header 41 connected to one end of the water pipe-type fixed grate 40 so that a portion of the coolant flowing into the coolant pipe 31 can be discharged to the outside via the water pipe-type fixed grate 40 Incinerator provided with a sloped water pipe-type fixed grate characterized in that it is.