KR20110137915A - Centrifugal continuous combustion apparatus having function of division on fly ash - Google Patents

Abstract

PURPOSE: A centrifugal continuous combustion apparatus having the separation function of fly ash is provided to maximize the centrifugal force of the combustion gas and accelerate the perfect combustion by minimizing the length of a preheating chamber in which the combustion gas passes through. CONSTITUTION: A centrifugal continuous combustion apparatus having the separation function of fly ash comprises a combustion unit(210), a combustion ash discharging unit(230) and a fly ash separating unit(240). The combustion unit is divided into an inner container(211) and an outer container(212). The combustion gas is provided from the blowing fan between the inner container and outer container. The combustion gas is swirled down along the inner wall through the centrifugal force and is provided to the combustion chamber(211a). The combustion ash discharging unit collects the incombustible combustion ash discharged to the space between the combustion chamber and fire grate(220). The combustion ash discharging unit automatically discharges the combustion ash. The fly ash separating unit has an air input port(243) and an ash discharge port(244) on one side and the other side.

Description

Centrifugal continuous combustion device with fly ash separation function {CENTRIFUGAL CONTINUOUS COMBUSTION APPARATUS HAVING FUNCTION OF DIVISION ON FLY ASH}

The present invention relates to a centrifugal continuous combustion device, and more particularly, to separate fly ash inevitably generated during combustion by using separate vortex air, thereby allowing to use purified hot combustion gas as a heat source. It relates to a centrifugal continuous combustion device having a function.

Combustion is burning fuel. Technically, it refers to a chemical reaction in which carbon and hydrogen, which are combustible components in fuel, are combined with oxygen in air, and release a large amount of thermal energy to the surroundings.

By using this combustion principle, a combustion device that generates thermal energy by igniting and burning various types of fuel in a combustion chamber is used in various industrial fields today. For example, a combustion device is installed to obtain thermal energy in an industrial facility that requires industrial hot water, steam, or hot gas, and a large-scale combustion device is installed to generate thermal energy for power generation facilities such as thermal power generation. . In addition, the facility that incinerated industrial wastes is newly establishing a system that can supply thermal energy generated by incineration to other industrial facilities for recycling.

As the demand for a combustion device increases throughout the industry, a demand for a high performance combustion device with high combustion efficiency and low environmental pollution is increasing. This situation is not met.

The stoka-type combustion method is a method of blowing high temperature combustion by blowing combustion air from the lower part of the fuel supplied into the combustion chamber. According to this method, the combustion efficiency is not high because the fuel rises to the upper part of the combustion device while the fuel is unburned. There is a serious problem of not being. To solve this problem, it is necessary to increase the combustion chamber height to make the combustion time longer, which is the main cause of the increase in the installation cost.

In addition, a large amount of environmental pollutants such as carbon monoxide, sulfur compounds (SOx), nitrogen compounds (NOx), dioxins, etc. due to the incomplete combustion of the fuel, because all the air flow in the combustion chamber is directed from the bottom to the top. Since pollutants escape to the upper part of the combustion apparatus together with the combustion gas used as a heat source, a large dust collecting facility for recovering them must be installed at the rear of the combustion apparatus. The size and installation cost of the dust collector was larger than that of the combustion system, making it uneconomical.

In addition, since the entire interior of the combustion chamber is at a high temperature of 1000 ° C. or more, there is a problem in that an expensive refractory is attached to an inner wall of the combustion cylinder or a water cooling device such as a water jacket is installed.

The present inventors have developed a new type of combustion method that can maximize the combustion efficiency by using centrifugal force after repeated many studies and experiments to solve the problems of the conventional stoka type combustion apparatus and the Republic of Korea Patent No. 330814 (all Has been registered as a combustion method for burning flammable materials at very high temperatures and speeds.

The combustion method will be briefly described with reference to FIG. 1 as follows.

In the combustion method according to Korean Patent No. 330814, first, the combustion air supplied from the lower portion of the lower outer cylinder 103 is sucked into the space between the fuel cylinder 105 and the lower outer cylinder 103 to be the primary preheating air g. And receiving the primary preheating air (g) and supplying it to the blower 110 to form the secondary preheating air (a) in the space between the primary combustion chamber 100 and the upper outer cylinder 102, and the primary The fuel tank 105 in which the fuel 116 is stored while the secondary preheated air (a) injected into the combustion chamber 100 rotates in close contact with the inner wall surface of the primary combustion chamber 100 by centrifugal force generated by continuously rotating the fuel. It is lowered to absorb the combustion heat of the inner wall surface of the primary combustion chamber 100 to form the third preheating air (b) to preheat the combustion air and effectively cool the combustion cylinder, thereby facilitating ignition with fuel. As well as separates such as refractory and water jackets Open communication without installing a cooling unit helps to withstand the high temperature of the combustion heat.

Furthermore, the step of forming the mixed ignition combustion zone (f) in which the tertiary preheating air (b) is mixed with the fuel 116 in the fuel container 105 to rotate and burn, and incomplete in the mixed ignition combustion zone (f) The high specific combustion region (c) is combusted by the combustion of the high specific combustion material is moved into the third preheating air (b) of the primary combustion chamber (100) to increase the combustion distance and the combustion time, and the high ratio Low specific gravity combustion products incompletely combusted in the middle combustion region (c) move to the center of the primary combustion chamber 100 to be concentrated and rotated, and the low specific gravity high temperature combustion region (d) and the central region of the high temperature thermal core (e) It is formed by the centrifugal separation of the internal region of the combustion chamber to ensure that the fuel is completely burned, thereby maximizing the combustion efficiency, and also generates little emissions of environmental pollutants due to unburned.

The present inventors have developed a groundbreaking combustion principle capable of completely burning fuel using centrifugal force of combustion air, and applied it to an actual combustion device as shown in FIG. 2 to obtain a Korean Patent No. 909269 (centrifugal continuous combustion). Device and combustion method thereof).

The registered patent No. 909269 (hereinafter referred to as "prior patent") completely burns fuel by using the centrifugal force of the combustion air, so the combustion efficiency is very excellent and almost no environmental substances are generated. However, the following improvements were found in the process of commercial use.

First, since the combustion air supplied from the blower 90 passes through the preheating chambers 23 and 33 in a long section and then enters the combustion chamber, the centrifugal force of the combustion air in the process of passing through the preheating chambers 23 and 33 is increased. There is a problem of deterioration. Of course, although the centrifugal force exists even though passing through the preheating chamber, minimizing the section passing through the preheating chamber will maximize the centrifugal force, thereby facilitating further mixing with the fuel.

Second, since the prior patent has a connection elbow (41) connecting to the steam boiler (not shown) is directly connected to the combustion chamber, fine fly ash generated during combustion is connected to the steam boiler through the connection elbow (41) together with the hot combustion gas. There is a problem of inflow, which requires a technique for separating such fly ash from the combustion gas.

Third, since the prior patent has a structure in which the fuel passing through the fuel injection cone 87 is directly stacked on the grate 50, a large amount of fuel is difficult to be loaded on the grate 50, and thus the contact area with the combustion air is limited. As a result, this is a limiting factor in the increase in firepower. Therefore, when the fuel passes through the fuel injection cone 87, the structure of the fuel injection cone is gradually accumulated from the edge of the grate 50 so that the fuel can be loaded in the most ideal semicircular form.

Fourth, the prior patent has a considerable space remaining between the stirring bar 88 installed in the fuel injection cone 87 and the stirring bar 79 provided on the inner wall of the inner cylinder to reduce the stirring efficiency of the fuel and the inside of the combustion chamber There is a problem that crank or unburned material remains.

The present invention is to solve the problems as described above, the object of the first is to minimize the length of the preheating chamber passing through when the combustion air enters the combustion chamber to promote the complete combustion by maintaining the centrifugal force of the combustion air to the maximum It is.

Secondly, the fly ash inevitably generated in the combustion chamber is separated from the hot combustion gas simply and effectively so that clean combustion gas is supplied to the steam boiler through the connecting elbow.

Third, by raising the discharge height of the fuel discharged from the fuel injection cone to allow the fuel to be more stably stacked on the grate.

Fourth, the ends of the agitating bars respectively installed on the fuel injection cone and the inner wall of the inner cylinder so as not to leave the crank or unburned material in the combustion chamber is located on the same circumference.

In order to solve the above-mentioned problems,

A combustion unit configured to be divided into an inner cylinder and an outer cylinder to supply combustion air supplied from a blowing fan to a space therebetween, wherein the introduced combustion air is rotated down the inner wall of the inner cylinder by centrifugal force to supply combustion air to a combustion chamber; A grate rotatably installed at a lower portion of the combustion unit, the fuel being continuously loaded to meet the rotating descending combustion air to be combusted in the combustion chamber of the combustion unit; A combustion ash discharge unit installed at a lower portion of the grate to seal the combustion chamber, and a combustion ash discharge unit configured to automatically collect the non-combustible combustion material discharged into the space between the combustion chamber and the grate into the redistribution bin and automatically discharge it to the outside; It is disposed above the combustion unit so as to communicate with the combustion chamber, the air inlet and redistribution outlet is provided on one side and the other side, the vortex air introduced into the air inlet is rotated along the inner wall by the centrifugal force to include the fly ash generated in the combustion chamber together. Fly ash separation unit to be discharged to the outside through the cultivation outlet; A cyclone connected to the air inlet and the cultivation outlet so that the vortex air is continuously circulated to the fly ash separation unit, and the fly ash discharged through the cultivation outlet falls downward from the inside and is sent to the combustion ash discharge unit; A fuel injection cone installed perpendicularly to the central portion of the grate, a transfer screw installed at the lower portion of the fuel injection cone to carry fuel, and a fixed hopper installed at the transfer screw to supply and purify the fuel; It provides a continuous combustion apparatus having a fly ash separation function comprising a; fuel quantitative supply for continuously supplying a fixed quantity.

In addition, the upper portion of the fly ash separation unit is a boiler connection elbow is installed in order to use a high temperature combustion gas as a heat source, the fly ash separation unit and the boiler connection elbow is characterized in that it is installed in a flexible connection pipe in consideration of thermal expansion.

In addition, the grate is rotatably installed in the main frame of the circular frame, the inside of the main frame a plurality of inner plates are installed to be inclined downward outward so that the fuel supplied to the center can move outward, In the outside, a plurality of external plates are horizontally installed to support the fuel that has moved.

Meanwhile, the main frame is rotatably supported by a plurality of support rollers, and a circular rack gear installed at a lower portion of the main frame is connected to the driving motor.

In addition, the inner frame is mounted inside the main frame on an inner mount installed inclined downward toward the outside while forming a radial shape centering on a fuel supply cone, and the outer surface of the main frame is installed horizontally to correspond to the inner mount. The external plate is mounted on a mounting table.

In addition, the upper portion of the fuel injection cone is characterized in that the fence is spaced apart a predetermined interval along the circumferential direction of the fuel injection cone.

In this case, an air hole is formed at the end of the fence, and an air flow path communicating with the air hole is provided in the fence, and the air flow path is supplied with compressed air from a compressor to cool the fence exposed to high heat. .

In addition, one side of the fuel injection cone is connected to the fire extinguishing pneumatic line connected to the compressor is characterized in that the compressed air flows into the fuel injection cone.

In addition, a first bar for crushing and agitating the fuel supplied over the grate is installed at an upper end of the fuel injection cone, and a second bar is provided at an inner wall of the inner cylinder extending to a circumference of the end of the first stirring bar. It is characterized in that a blank portion does not remain between the first bar and the second bar.

In addition, an injection hole is formed at an end of the first bar and the second bar, and an air flow path communicating with the injection hole is provided in the first bar and the second bar, and compressed air is supplied to the air flow path from a compressor. The exposed first and second bars may be cooled.

In addition, the combustion material discharge portion is characterized in that the negative pressure forming pipe is connected to the cyclone from the redistribution in order to smoothly discharge the incombustible combustion material from the combustion chamber.

According to the present invention, perfect combustion is promoted as the actual centrifugal force of the combustion air is maximized when the combustion air enters the combustion chamber by minimizing the length of the section through which the combustion air passes before entering the combustion chamber.

In addition, since fly ash inevitably generated in the combustion chamber during combustion is completely separated from the combustion gas through the fly ash separation unit, the purified combustion gas can be used as a heat source.

In addition, since the fuel discharged from the fuel injection cone by the fence according to the present invention is loaded with a larger surface area on the grate to increase the contact area with the combustion air, complete combustion is promoted, and in particular, the thermal power is increased.

In addition, by the first bar and the second bar installed in the lower end of the combustion chamber so that the ends are located on the same circumference, the stirring efficiency of the fuel is increased, and the cranker or unburned material is not left, thereby further promoting complete combustion.

1 is a view showing the principle of centrifugal complete combustion;
2 is a view showing the main configuration of the prior patent,
3 is a front view showing a combustion apparatus according to the present invention;
4 is a configuration diagram schematically showing the internal structure and main configuration thereof;
Figure 5 is a partial enlarged view showing in detail the structure of the combustion section, grate, fly ash separation unit of the present invention,
6 and 7 are views showing the configuration of the grate according to the present invention,
8 is a view showing the main configuration of the combustion ash discharge unit according to the present invention;
9 is a view showing the configuration of the first bar and the second bar according to the present invention;
10 is an explanatory view showing a combustion zone centrifuged in accordance with the present invention;

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

Figure 3 is a front view showing a combustion apparatus according to the present invention, Figure 4 is a schematic diagram showing the internal structure and the main configuration, Figure 5 is a detail showing the structure of the combustion section, grate, fly ash separation unit of the present invention in detail It is an enlarged view.

Continuous combustion apparatus 200 having a fly ash separation function according to the present invention is largely combustor 210, grate 220, the combustion ash discharge unit 230, fly ash separation unit 240, cyclone 250 And a fuel quantitative supply unit 290.

The combustion unit 210 is configured to ultimately completely burn the fuel by excellent mixing with the fuel by using the centrifugal force of the combustion air, the combustion unit 210 as shown in Figures 4 and 5 It is divided into an inner cylinder 211 and an outer cylinder 212.

Here, the inner cylinder 211 is configured to substantially constitute a combustion chamber 211a in which combustion air and fuel meet and generate combustion, and the outer cylinder 212 has a predetermined space formed between the inner cylinder 211. The inner cylinder 211 is configured to be installed outside.

An air inlet 214 is formed at one side of a space (hereinafter, used interchangeably with the term “main flow path 213”) formed between the inner cylinder 211 and the outer cylinder 212, and the air inlet ( 214 is connected to the blower fan 90 installed outside the combustion unit 210, and the combustion air supplied from the blower fan 90 passes through the air inlet 214 to the main flow path 213 of the combustion unit 210. Flows into).

When the combustion air flows into the main flow passage 213, the inflow direction of the combustion air coincides with the tangential direction of the outer wall of the inner cylinder 211 so that the combustion air moves with a centrifugal force inside the main flow passage 213. And enter the inner cylinder 211 in a state where the centrifugal force is preserved.

When the combustion air enters the inner cylinder 211, that is, the combustion chamber 211a, the main flow passage 213 is very short upward as shown in FIG. 5 so that the centrifugal force of the combustion air is maintained as much as possible without deterioration. The section is formed and has a structure that is formed downward after passing through the inner cylinder (211).

Accordingly, since the combustion air introduced through the air inlet 214 rises only a short section upward while circling in the circumferential direction on the outer wall of the inner cylinder 211, the centrifugal force loss is minimized, and the moving direction is changed in this state. 211) the inner wall is rotated and lowered to mix with the fuel under the combustion chamber 211a.

Since the structure of the combustion unit 210 preserves the centrifugal force of the combustion air as much as possible compared to the prior patent, the vortex of the combustion air rotating downward along the inside of the inner cylinder 211 is strengthened, thereby promoting complete combustion.

Combustion air supplied to the main flow passage 213 cools the inner cylinder 211 and the outer cylinder 212 while being moved along the main flow passage 213 and is then supplied to the internal space of the combustion chamber 211a. At this time, the combustion air rides on the inner wall of the inner cylinder 211 by centrifugal force to generate a strong downdraft.

The air curtain effect due to this strong downdraft prevents the high temperature combustion heat generated inside the combustion chamber 211a from being directly transmitted to the inner cylinder 211, which is a very effective cooling means.

The strong downdraft occurring inside the combustion chamber 211a is a technical configuration that is distinguished from the existing stoka method in which only the updraft exists in the combustion chamber 211a. It is to enable the discharge action, a detailed description thereof will be described later.

In addition, a plurality of blades 215 are installed in the upper portion of the main flow passage 213 to promote rotation of combustion air. The blade 215 maintains the rotational force of the combustion air rotating along the main flow passage 213 to prevent the rotational speed of the combustion air at the upper end of the main flow passage 213.

Meanwhile, as shown in FIGS. 4 and 5, the grate 220 is rotatably installed in the lower portion of the combustion chamber 211a of the combustion unit 210, and the fuel F continuously supplied thereon is loaded and rotated downward. To meet the combustion air to be continuously burned in the combustion chamber (211a).

Here, the grate 220 is continuously supplied with the fuel (F) from the outside to load the fuel thereon and rotating stirring it so that the fuel can be uniformly contacted with the combustion air to ignite.

In the combustion apparatus of the present invention, RDF (Refused Derived Fuel) mainly fueling household waste or RPF (Refused Derived Fuel) fueling waste plastic is used, but any combustible material such as coal, wood, industrial waste, etc. may be used. Can be used. In addition, although a flammable material in a solid form is mainly used, a flammable material in a liquid form such as light oil, bunker C oil, or the like may also be used by changing the shape of the grate 220 described below within an equivalent range.

6 and 7 show the configuration of the grate 220.

Here, grate 220 is a main frame 221 of a large circular frame, a plurality of inner and outer mounting brackets (223, 224) formed in a radial form on the inner and outer sides of the main frame 221 to form a skeleton, and It is composed of a plurality of inner and outer plates 225 and 226 mounted on the inner and outer mounts 223 and 224 so that fuel can be loaded.

The main frame 221 is mounted with a circular rack gear 222 along the lower portion of the circular frame, the rack gear 222 is connected to the drive motor 228 is installed, the main frame 221 is the combustion chamber (211a) It is configured to rotate at the bottom.

In addition, the main frame 221 is supported by a support roller 227 installed at a predetermined interval on the lower portion of the circular frame is configured to be rotated smoothly, the drive motor 228 and the support roller 227 is the shape Similarly, but only one driving motor 228 for rotating the main frame 221 is sufficient, and the rest is supported by the support roller 227 from the bottom of the main frame 221 (see Fig. 8).

The inner mount 223 is installed to be inclined downward to the outside while forming a radial shape leaving a space in which the fuel injection cone 260 to be described later is installed in the main frame 221, and an inner flat plate 225 at the top thereof. The mounting protrusion 223a is formed to fit with the fitting.

The external mounting stand 224 is installed horizontally to correspond to the internal mounting stand 223 on the outside of the main frame 221, the mounting protrusion 224a is formed to be fitted and coupled to the outer flat plate 226 at the top. .

The plurality of inner flat plates 225 are fitted to the mounting protrusions 223a of the inner mounting table 223 to be installed to be inclined downward to the outside so that the fuel supplied to the center can be moved outward.

The plurality of outer flat plate 226 is fitted to the mounting protrusion 224a of the external mounting table 224 and installed horizontally to support the fuel from the center. At this time, each of the inner plate 225 and the outer plate 226 is preferably installed with a clearance interval in consideration of thermal expansion due to high temperature.

In addition, the combustion material discharge unit 230 is a configuration for smoothly discharging the non-combustible combustion material remaining after the complete combustion to the outside of the combustion chamber 211a. According to the combustion apparatus of the present invention, almost no fuel or environmental pollutant is generated because the fuel is almost completely burned.

However, the fuel may include a non-combustible component that does not burn even at a high temperature, which is left as a combustion material after the fuel is completely burned. In order to continuously operate the combustion device, such a non-combustible combustion material is automatically moved out of the combustion chamber 211a. It is preferable to discharge.

The combustion material discharge unit 230 is configured to automatically discharge the non-combustible combustion material to the outside of the combustion chamber 211a by using the downdraft flowing through the inner wall of the combustion chamber 211a. That is, the ash discharge cylinder 231 is provided below the grate 220, and the ash discharge cylinder 231 forms a space between the inner cylinder 211 and the grate 220 such that the non-combustible combustion material is formed on the inner wall of the combustion chamber 211 a. It is configured to automatically discharge to the ash discharge container 231 along the downdraft flowing through the.

At this time, as shown in FIG. 8, the non-combustible combustion material is smoothly discharged from the combustion chamber 211a, and the negative pressure forming pipe 231a is connected to the inlet port of the cyclone 250 to be described later from the ash discharge cylinder 231.

The negative pressure forming pipe 231a is connected to the cyclone 250 from three places of the ash discharge container 231. Since the inlet port of the cyclone 250 sucks air, when the ash outlet 231 communicates with this, a negative pressure is generated therein. The negative pressure sucks air through the space between the inner cylinder 211 and the grate 220 of the combustion chamber 211a so that the non-combustible combustion material is smoothly discharged to the ash discharge vessel 231.

In order to completely discharge the incombustible combustion material discharged into the ash discharge container 231 to the outside of the combustion apparatus, a ash discharge port 233 is formed at the bottom of the ash discharge container 231. (See FIG. 4) The ash discharge container ( In the inside of the 231, the conveying plate 232 is installed in the lower portion of the grate 220 and rotated together with the grate 220, scraping the non-combustible combustion material accumulated in the bottom of the ash discharge container 231 to collect the ash discharge port 233 ) To carry.

The re-discharge port 233 is provided with a transfer screw 237 to automatically discharge the incombustible combustion material to the outside of the combustion device. The transfer screw 237 may be directly connected to the discharge port 233 again, but may be indirectly connected through the discharge screw 235 as shown in FIG. 8. A discharge motor is installed in the discharge screw 235 to generate earth output for the non-combustible combustion material, and a rotary valve 236 is installed at the connection portion between the discharge screw 235 and the transfer screw 237 to provide a discharge screw 235. Reduce the high pressure.

In addition, the transfer screw 237 is provided with a scattering dust recovery pipe 238 for collecting the scattering dust to circulate to the ash discharge container 231. The inside of the transfer screw 237 includes not only non-combustible combustion materials but also fine scattering dust. In the present invention, the scattering dust is sucked through the scattering dust recovery pipe 238 and blown to the ash discharge container 231 to scatter. Circulates dust and prevents it from bleeding out of the furnace.

To this end, the scattering dust collection pipe 238 is provided with a blowing motor 238a and a pressure regulating valve 238b for adjusting the blowing pressure of the blowing motor 238a.

Meanwhile, as shown in FIGS. 4 and 5, the fly ash separation unit 240 is disposed above the combustion unit 210 so as to communicate with the combustion chamber 211a of the combustion unit 210. By separating the fly ash generated in the) from the high-temperature combustion gas to be used as a heat source is configured to ensure that only the purified combustion gas is supplied to the steam boiler through the connection elbow (245).

As shown, the fly ash separation unit 240 also includes a separation inner cylinder 241 and a separation outer cylinder 242. An air inlet 243 is provided at one side and the other side of the space between the separation inner cylinder 241 and the separation outer cylinder 242. ) And the redistribution outlet 244 are respectively provided.

The air inlet 243 may be in communication with a separate blowing means to receive the vortex air, but more preferably connected to the exhaust port of the cyclone 250 as shown in Figure 4 supplied from the cyclone 250 As the air flows in, the air introduced into the air inlet 243 is also a vortex air having a rotational force and descends a predetermined section along the outer wall of the separation inner cylinder 241 of the fly ash separator 240, and then the inner wall of the separation inner cylinder 241. Rotates along.

When the vortex air is rotated up along the inner wall of the separating inner cylinder 241 by centrifugal force, fly ash generated during the combustion process of the combustion chamber 211a is included in the vortex air to be rotated up together.

As such, the vortex air including the fly ash rotates upwardly and moves toward the separation outer cylinder 242 through the upper portion of the separation inner cylinder 241 of the fly ash separator 240, and finally, the separation inner cylinder 241 and the separation outer cylinder 242. It is discharged to the outside through the redistribution outlet 244 formed therebetween.

In this case, the redistribution outlet 244 may be in communication with a separate collecting means to allow fly ash to be collected, but in the case of using the cyclone 250 as in the preferred embodiment of the present invention, the intake port of the cyclone 250 and the redistribution outlet A pipe 244 is connected to allow vortex air, including fly ash, to enter the cyclone 250. The fly ash having a higher specific gravity than air falls downward from the inside of the cyclone 250 and the vortex air is sent back to the air inlet 243 through the inlet of the cyclone 250.

As such, fly ash generated in the combustion chamber 211a by the vortex air continuously circulated by the cyclone 250 is separated without being introduced into the steam boiler, and is accumulated in the lower portion of the cyclone 250.

In addition, the upper portion of the fly ash separation unit 240 is provided with a connection elbow 245 for connecting with the steam boiler in order to use the hot combustion gas as a heat source, the fly ash separation unit 240 and the connection elbow 245. 3 is preferably connected to the flexible connection tube 246 in consideration of thermal expansion.

Since the connecting elbow 245 has no down stream of combustion air, refractory is attached to the inner wall of the connecting elbow to protect it from high temperature combustion heat. In FIG. 4, as an example, a castable 247 and cerakwool ( 248 is shown attached in double layers. The expansion connector 246 is made of bellows using stainless steel to compensate for thermal expansion and contraction between the fly ash separation unit 240 and the connection elbow 245.

On the other hand, in order to discharge the fly ash accumulated under the cyclone 250 to the outside, the lower end of the cyclone 250 is connected to the combustion material discharge unit 230 as shown in FIG. Therefore, the fly ash accumulated in the lower portion of the cyclone 250 is sent to the combustion material discharge unit 230 is discharged to the outside along with the non-combustible combustion material.

In addition, as shown in FIGS. 4 and 8, a negative pressure forming pipe 231a is disposed at the inlet of the cyclone 250 so that the non-combustible combustion material can be smoothly discharged from the combustion chamber 211a. The bar is separated by using the negative pressure formed on the inlet port side of the cyclone 250 to separate the fly ash and at the same time to allow the non-combustible combustion material in the lower combustion chamber 211a to be smoothly discharged to the ash discharge container (231).

On the other hand, a fuel quantitative supply unit 290 for continuously supplying fuel to the grate 220 is provided.

The fuel quantitative supply unit 290 is a fuel injection cone 260 is installed perpendicular to the center portion of the grate 220 largely as shown in Figures 3 to 5, the fuel injection cone 260 is installed in the lower portion of the fuel It is composed of a transfer screw 270 for transporting, and a fixed hopper 280 is installed in the transfer screw 270 to supply and purify the fuel.

The fuel injection cone 260 is fixedly installed at the center of the grate 220 to uniformly supply the fuel transported through the transfer screw 270 onto the grate 220. Since the fuel injection cone 260 is fixed and the grate 220 rotates around the fuel injection cone 260, the fuel F may be stirred at a portion where the fuel injection cone 260 and the grate 220 meet to be uniformly ignited with combustion air. To make it work.

At this time, the fuel injected through the fuel injection cone 260 is predetermined on the upper portion of the fuel injection cone 260 as shown in detail in FIG. 5 so that it can be stably stacked with a larger surface area on the grate 220. A fence 261 having a height is installed at regular intervals along the circumferential direction of the fuel injection cone 260.

Since the fence 261 is installed at a predetermined height in the circumferential direction on the upper portion of the fuel injection cone 260, the fuel discharged through the fuel injection cone 260 is upward by the height of the fence 261. As it is further raised to be stacked on the grate 220.

Therefore, the fuel can be spread evenly throughout the grate 220, so that the surface area of the fuel is increased, so that the contact area with the combustion air is increased, thereby promoting complete combustion and increasing the thermal power.

Here, since the fence 261 is located inside the combustion chamber 211a, the fence 261 is exposed to a high temperature combustion gas, and thus, a separate means for cooling the fence 261 is preferably provided. Accordingly, as shown in FIG. 5, an air hole 261a for injecting compressed air is formed at an end of the fence 261, and an air flow path communicating with the air hole 261a is formed inside the fence 261. 261b).

Since the air flow path 261b is connected to the compressor C and the pneumatic line L, which is provided separately, to receive compressed air, even when the fence 261 is exposed to high temperature, sufficient cooling is possible through injection of compressed air. .

On the other hand, when combustion is completed in the combustion chamber 211a, the fuel input cone 260 does not adhere to the fuel injection cone 260 only after the final combustion fuel is completely removed from the fuel injection cone 260. Through 260 it is possible to re-fuel fuel.

Accordingly, one side of the fuel injection cone 260 is connected to the fire extinguishing pneumatic line (R) connected to the compressor (C) to allow the compressed air to flow into the fuel injection cone (260). When compressed air flows into the fuel injection cone 260, the compressed air is discharged toward the combustion chamber 211a through a gap formed in the fuel injection cone 260 and remains on the fuel injection cone 260. The residue or the combustion material is removed to prevent the hot combustion material from sticking to the upper portion of the fuel injection cone 260.

As such, when the combustion is finished, the upper portion of the fuel injection cone 260 is cleanly cleaned by the compressed air, so that the fuel is smoothly supplied when the fuel is re-inserted through the fuel injection cone 260 later.

In addition, when a separate transfer device such as a screw is installed inside the fuel injection cone 260 to raise the fuel toward the fuel injection cone 260, the combustion chamber 211a is located along an empty space generated when the screw rotates. The flames of the fire may come down to ignite outside the combustion chamber 211a.

This may not only reduce the combustion efficiency but also cause a fire in severe cases, so that the flame in the combustion chamber 211a does not come down on the fuel injection cone 260 to be installed inside the fuel injection cone 260 installed vertically. It is configured to fill only fuel without installing a separate screw.

As such, since a separate screw is not installed inside the fuel injection cone 260, a separate technical configuration for raising fuel is required. For this purpose, the rotary blade of the transfer screw 270 is used to feed the fuel injection cone 260. It is configured such that the transfer force acts in the opposite direction to each other, more precisely in the direction of pushing the fuel toward the fuel injection cone 260 on both sides of the lower portion of the fuel injection cone 260 to the center.

The transfer screw 270 may be installed to directly connect the metering hopper 280 and the fuel injection cone 260, and as shown in Figure 4 to increase the height of the metering hopper 280 and the fuel injection cone 260 In consideration, it may be installed so as to indirectly connect through the fixing screw 271. At this time, the rotary blades of the crystallizing screw 271 in the connection portion of the crystallized screw 271 and the transfer screw 270 to be in the opposite direction to facilitate the downward movement of the fuel.

The dosing hopper 280 is a body which is provided so that the fuel transported by a belt conveyor (not shown), etc. as shown in Figure 4 is injected through the open top, and is rotatably installed inside the body to provide fuel It consists of a plurality of rotating discs 281 which are uniformly stirred and fixed down.

The rotating disc 281 is installed at a predetermined interval on the rotating shaft 282 installed inside the body of the dosing hopper 280, the stirring blade formed with a wing hole around the rotating disc 281 is uniformly fueled Agitates and prevents bridge bridging of fuels.

In addition, a plurality of rear discharge holes are formed on the surface of the rotating disc 281 to smoothly stir the fuel by the rotating disc 281 by moving the fuel driven forward while the rotating disc 281 rotates backward. To make it happen.

According to the present invention, the fuel continuously supplied over the grate 220 is uniformly stirred to allow ignition to occur uniformly in the combustion chamber 211a, and to prevent combustion of unburned fuel to the outside of the combustion chamber 211a, thereby improving combustion efficiency. Several components are installed to enable the configuration, which will be described in detail with reference to FIG. 9 below.

First, a first bar 262 for fuel agitation is installed at an upper end of the fuel injection cone 260 located at the center of the grate 220. The first bar 262 collides with the fuel that is rotated on the grate 220 to crush and stir it.

In addition, the fuel is pushed out of the grate 220 to provide a space in which the fuel can continue to be loaded in the center portion and increase the area where it meets the combustion air to allow sufficient ignition to occur.

In addition, a second bar 263 for agitating unburned fuel is installed at a lower portion of the combustion chamber 211a, more precisely, at a lower inner wall of the inner cylinder 211 to extend to a circumference of the end of the first bar 262. do.

 The second bar 263 pulverizes the unburned fuel pushed down from the grate 220 and pushes it back into the combustion chamber 211a so that combustion occurs. As the length is extended to the circumference of the end of the first bar 262, the stirring of the fuel is more efficiently because there is substantially no space left between the end of the first bar 262 and the end of the second bar 263. Is done.

Here, since the first bar 262 and the second bar 263 are also exposed to the high temperature combustion chamber 211a, cooling is required as in the fence 261 described above, and the first bar 262 and the second bar. An injection hole is formed at an end thereof, and an air flow path communicating with the injection hole is provided in the first bar and the second bar 263, and compressed air is supplied to the air flow path from a compressor provided separately. Bar 262 and second bar 263 are cooled.

In this case, since the first bar 262 is installed above the fuel injection cone 260, the compressor C and the pneumatic line L used for cooling the fence 261 described above may be shared. In addition, cooling of the second bar 263 may be performed by connecting a separate pneumatic line to the inner cylinder 211 in which the second bar 263 is installed while using the compressor C in common. Since the cooling of the first bar 262 and the second bar 263 may be easily performed by those skilled in the art from the cooling of the fence 261 of the fuel injection cone 260 in the foregoing, a separate drawing is omitted.

Hereinafter, the combustion operation of the combustion apparatus according to the present invention will be briefly described with reference to FIG.

The principle of complete combustion in the present invention is that the inside of the combustion chamber 211a is separated into several combustion zones by the centrifugal force of the combustion air, and is burned while circulating the combustion zone until the unburned fuel is completely burned.

As shown in Fig. 10, the ignition and complete combustion step causes the combustion air to rotate down the inner wall of the inner cylinder 211 of the combustion chamber 211a, and then meet and ignite the fuel F continuously supplied onto the grate 220. Forming a mixed ignition combustion zone (b); A high specific gravity combustion zone (c) for moving the high specific gravity unburned fuel out of the fuel ignited in the mixed ignition combustion zone (b) toward the downdraft region (a) by centrifugal force to prolong the combustion distance and the combustion time for combustion. Forming a; Recycling unburned fuel in the high specific combustion zone (c) to the downdraft zone (a) by centrifugal force and recycling it to the mixed ignition combustion zone (b); And a low specific gravity combustion zone (d) for moving the low specific gravity unburned fuel to the center of the combustion chamber (211a) and burning it while rotating in the fuel ignited in the mixed ignition combustion zone (b); The high temperature thermonuclear f is formed in the center of the combustion chamber 211a by the combustion gas.

That is, the combustion air rotated and lowered into the combustion chamber 211a is mixed with the fuel loaded on the grate 220 at a high speed in the mixed ignition combustion zone b and starts to ignite and combust while moving to the center of the combustion chamber 211a. do.

The high specific fuel is sufficiently burned while maximizing its combustion distance and combustion time while moving to the high specific combustion region c formed on the outside of the combustion chamber 211a by the centrifugal force in the process of ascending and rotating at high speed. In the process, unburned fuel that is not completely burned is completely burned by moving to the downdraft region a and being recycled.

Since the low specific gravity fuel is relatively unaffected by the centrifugal force, it moves and gathers to the low specific gravity combustion zone d formed at the center of the combustion chamber 211a and the high temperature high temperature thermonucleus f at a high speed of rotation and ascending. It burns off completely at elevated temperatures. At this time, some unburned fuel that is not pyrolyzed is centrifuged by its weight, and then moved to the high specific combustion zone c and the downdraft zone a in order to be completely burned.

Thus, the combustion gas of the high temperature which is completely burned is used as a heat source which is transferred through the connection elbow 245 and produces steam. The hot combustion gas includes some fly ash generated during combustion as described above, but since the fly ash is separated by the fly ash separator 240 according to the present invention, only the cleanly purified heat source is connected to the connection elbow 245. Is sent.

Since this hot combustion gas is completely pyrolyzed in the low specific gravity combustion zone (d) and the hot core (f), it contains almost no environmental pollutants such as carbon monoxide, sulfur compounds (SOx), nitrogen compounds (NOx), and dioxins, which are harmful to the human body. Do not. Therefore, according to the present invention, it is not necessary to install a large dust collector as in the prior art at the rear end of the combustion apparatus.

Looking at the temperature distribution by the combustion zone centrifuged, there is a slight deviation depending on the operating time or the type of fuel, but in general, 100 ~ 500 ℃ in the downdraft zone (a), 600 ~ 1,000 in the mixed ignition and combustion zone (b) It is 800-1,300 degreeC in the high specific gravity combustion zone c, 1,200-1,500 degreeC in the low specific gravity combustion zone d, and 1,400-1,900 degreeC in the high temperature thermonuclear f. In addition, the outer cylinder 212 of the combustion unit 210 cooled by the downdraft region a is cooled to such an extent that a person may directly touch it during operation of the combustion apparatus.

As described above, according to the present invention, the inside of the combustion chamber 211a is completely centrifuged by the combustion air falling while rotating at high speed, so that the outside of the combustion chamber 211a is sufficiently cooled so that a separate cooling device is not necessary, while the combustion chamber 211a is The center of is to rise to a high temperature of more than 1,200 ° C to allow complete combustion of the fuel.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to the specific Example described, and the person of ordinary skill in the art is not limited within the scope of this invention. Substitution and modification of the components are possible, which also belongs to the rights of the present invention.

90: blower fan 210: combustion unit
211: inner cylinder 211a: combustion chamber
212: outer tube 220: grate
221: mainframe 222: gear
223: internal mounting 224: external mounting
225: internal flat 226: external flat
227: support roller 228: drive motor
230: combustion ash discharge unit 231: ash discharge container
240: fly ash separation unit 241: separation inner cylinder
242: separation cylinder 243: air inlet
244: cultivation exit 245: connection elbow
246: expansion connector 250: cyclone
260: fuel input cone 261: fence
270: transfer screw 280: dosing hopper
290: fuel supply unit

Claims (13)

Combustion air supplied from the blowing fan 90 flows into the space between the inner cylinder 211 and the outer cylinder 212, and the introduced combustion air rotates and descends on the inner wall of the inner cylinder 211 by centrifugal force. Combustion unit 210 is configured to supply combustion air to the combustion chamber 211a;
A grate installed rotatably at a lower portion of the combustion unit 210 and having fuel continuously supplied thereon to meet the rotating descending combustion air so as to be combusted in the combustion chamber 211a of the combustion unit 210 ( 220);
The ash discharge container 231 is installed to seal the combustion chamber 211a under the grate 220, and the non-combustible combustion material discharged into the space between the combustion chamber 211a and the grate 220 is discharged into the ash discharge cylinder. Combustion ash discharging unit 230 to collect to 231 automatically discharged to the outside;
Vortex air is disposed above the combustion unit 210 to communicate with the combustion chamber 211a, and air inlets 243 and redistribution ports 244 are provided at one side and the other side, and the vortex air introduced into the air inlets 243 is subjected to centrifugal force. And a fly ash separator 240 including the fly ash generated in the combustion chamber 211a while being rotated up along the inner wall to be discharged to the outside through the redistribution outlet 244. . The fly ash connected with the air inlet 243 and the cultivation outlet 244 to continuously circulate the vortex air to the fly ash separator 240, and the fly ash discharged through the cultivation outlet 244 is And a cyclone (250) falling downward and sent to the combustion ash discharge unit (230). The fuel injection cone 260 is installed perpendicular to the center portion of the grate 220, the transfer screw 270 is installed in the lower portion of the fuel injection cone 260 to transport the fuel, and the transfer screw And a fuel quantitative supply unit 290 which is installed at 270 and has a fixed quantity hopper 280 for supplying and supplying fuel to the grate 220 continuously. Continuous combustion apparatus having a. The method of claim 1, the upper portion of the fly ash separation unit 240, the connection elbow 245 is installed to use a high temperature combustion gas as a heat source, the fly ash separation unit 240 and the connection elbow 245 is thermal expansion Continuous combustion apparatus having a fly ash separation function, characterized in that installed in connection with the flexible connection pipe 246. The method according to claim 1, The grate 220 is rotatably installed in the main frame 221 of the circular frame, the inside of the main frame 221 a plurality of interior so that the fuel supplied to the center can move outward Flat plate 225 is installed to be inclined downward to the outside, the outside having a fly ash separation function, characterized in that a plurality of outer plate 226 is installed horizontally to support the fuel that has moved outside the main frame 221 Combustion device. The method according to claim 5, The main frame 221 is rotatably supported by a plurality of support rollers 227, the circular rack gear 222 is connected to the drive motor 228 is installed below the main frame 221 Continuous combustion apparatus having a fly ash separation function, characterized in that mounted. The method of claim 6, wherein the inner plate 225 is mounted on the inner mounting plate 223 installed inclined downward outward while forming a radial shape around the fuel injection cone 260 inside the main frame 221, The outside of the main frame 221 continuous combustion apparatus having a fly ash separation function, characterized in that the external plate 226 is mounted on the external mounting stand 224 horizontally installed to correspond to the internal mounting 223. 4. The continuous combustion apparatus of claim 3, wherein a fence 261 is disposed on the fuel injection cone 260 at a predetermined interval along the circumferential direction of the fuel injection cone 260. 9. The air passage 261b of claim 8, wherein an air hole 261a is formed at an end of the fence 261, and an air flow path 261b is provided in the fence 261 to communicate with the air hole 261a. ) Is supplied with compressed air from the compressor (C) so that the fence (261) exposed to high heat to cool the continuous combustion apparatus having a fly ash separation function. 10. The method of claim 9, wherein one side of the fuel injection cone 260 is connected to the extinguishing pneumatic line (R) connected to the compressor (C) characterized in that the compressed air flows into the fuel injection cone (260) Continuous combustion device with fly ash separation function. The fuel injection cone 260 is provided with an upper end of the first bar 262 for pulverizing and stirring the fuel supplied over the grate 220, the inner wall 211 of the inner wall of the first The second bar 263 extending in length to the circumference drawn by the end of the bar 262 is installed so that no blank portion remains between the first bar 262 and the second bar 263. Continuous combustion apparatus with the function. The method of claim 11, wherein the injection port is formed at the end of the first bar 262 and the second bar 263, the air flow passage communicating with the injection hole inside the first bar 262 and the second bar 263 And a compressed air supplied from the compressor to the air passage to cool the first bar 262 and the second bar 263 exposed to high heat. 3. The cyclone 250 of claim 2, wherein the combustion ash discharge unit 230 includes a negative pressure forming pipe 231a from the ash discharge cylinder 231 in order to smoothly discharge the incombustible combustion material from the combustion chamber 211a. Continuous combustion apparatus having a fly ash separation function, characterized in that connected to).

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