KR20010074047A - Burner for inflammable pulverized fuel - Google Patents

Abstract

PURPOSE: A burner for inflammable powder fuel is provided to obtain energy in an incinerating process as well as to incinerate industrial waste matter safely and to minimize secondary pollution by crushing/mixing inflammable waste matter, extrusion-molding/crushing the mixture and burning the matter. CONSTITUTION: A burner for inflammable powder fuel consists of: a powder fuel feeder(110) injecting powder fuel into a burner(100); a powder fuel storage tank(120) storing the powder fuel before burning; a pilot burner(140) generating inflammable gas and burning fuel by heating the powder fuel supplied from the powder fuel feeder; a blower(130) supplying combustion air into the pilot burner and combustion chambers; a pilot combustion chamber(150) generating hot inflammable gas from the ignited powder fuel with a flame of the pilot burner and feeding the inflammable gas into a primary combustion chamber(190) together with external air; the nozzle shaped primary combustion chamber mixing the hot inflammable gas with air and burning the fuel with a flame of the pilot burner; a secondary combustion chamber(200) heated by hot heat from the primary combustion chamber to burn the powder fuel gas therein again, having a screw(201) for mixing and burning the inflammable gas with air; and a third fuel chamber(300) heated by hot heat by radiant heat from the secondary combustion chamber, having a rotor for mixing/burning the non-burnt gas of the secondary combustion chamber with air. Industrial waste matter is incinerated safely with protecting environment. In addition, energy is obtained in the incinerating process.

Description

Combustible Powder Fuel Combustor {BURNER FOR INFLAMMABLE PULVERIZED FUEL}

The present invention relates to a combustible powder fuel combustor, and more particularly, to a combustor for generating energy while simultaneously burning combustible industrial waste and the like to prevent environmental pollution.

In recent years, industrial wastes have flooded in the process of industrialization and industrialization of Korea and the world, and environmental problems have reached a serious level. The wastes produced by industrialization and industrialization take a few years to hundreds of years or more to decompose naturally, destroying the earth's natural environment and thus greatly affecting the health of the people living therein. Governments try to prevent environmental destruction by industrial waste with environmental protection law and waste management law, but they are facing limitations in reality.

As part of environmental protection, incineration of industrial waste is widely used. However, this method is expensive to operate the combustor and often causes secondary pollution. An example of such secondary pollution is dioxin, which is a toxic gas generated during incineration of waste in a cleaning plant.

Accordingly, the present invention aims to securely incinerate industrial wastes while protecting the environment, as well as to obtain energy in such an incineration process.

In addition, an object of the present invention is to reduce the secondary pollution to a minimum by crushing or pulverizing the combustible waste and the like, and by extruding and pulverizing again to fine particles.

It is also an object of the present invention to provide a combustor capable of minimizing fuel consumption and providing efficient energy for incineration of industrial waste.

1 is a perspective view of an embodiment of a combustible powdered fuel combustor according to the present invention, showing a portion thereof;

2 is a side view of an embodiment of a combustible powdered fuel combustor according to the present invention, showing a portion thereof;

* Description of the symbols for the main parts of the drawings *

100: burner

110: powder fuel supply 120: fuel reservoir

130: blower 131: blower passage

132: blown motor

140: pilot burner 141: ignition electrode

142: oil jet nozzle

150: pilot burner furnace 160: furnace secondary passage

164: main plate 165: fixing bolt

166: air passage separator and retaining plate

167: bearing 168: air inlet passage

169: bearing 269: fuel separator

170: screw drive shaft and combustion air passage

180: blowing nozzle 190: primary combustor (gas and air mixing nozzle)

200: secondary combustion chamber cap 201: fixed screw

202: secondary combustion chamber outlet 203: separator

300: tertiary combustion chamber (flame discharge passage)

The present invention is to achieve this object, the configuration is as follows. That is, a combustible powder fuel combustor for pulverizing and extruding combustible waste, etc., and then pulverizing it into fine particles, the combustible powder fuel combustor comprising: a powder fuel feeder for introducing the fuel powdered into the combustor into a combustor; A powder fuel storage chamber disposed under the powder fuel supply unit and stored before the powder fuel is combusted; A pilot burner attached to the outside of the combustor to heat the powder fuel supplied from the powder fuel supply to generate a combustible gas and to burn it; A blower for supplying combustion air into the pilot burner and combustion chamber; A pilot combustion chamber for heating the powder fuel by using the flame of the pilot burner to generate a high-temperature combustible gas and supply it with the outside air to the primary combustion chamber; A nozzle-shaped primary combustion chamber disposed at a rear end of the pilot combustion chamber and configured to mix high temperature combustible gas and air supplied from the pilot combustion chamber and combust using a flame of a pilot burner; A secondary combustion chamber disposed at the rear end and the surroundings of the primary combustion chamber, wherein the secondary combustion chamber is composed of a separator that separates unburned gas and high heat from the powdered fuel discharged from the primary combustion chamber from the outside. The secondary combustion chamber is placed in the inner center of the secondary combustion chamber so that the high heat generated in the primary combustion chamber heats the secondary combustion chamber to re-burn the gas of the powder fuel introduced into the secondary combustion chamber. A secondary combustion chamber, in which a screw is fixed to allow the combustible gas in the secondary combustion chamber to mix well with air and be combusted; A third combustion chamber disposed adjacent to the secondary combustion chamber and surrounding a part of the secondary combustion chamber and heated to a high temperature by self-radiated heat of the secondary combustion chamber, the non-combustible gas of the powder fuel discharged from the secondary combustion chamber. It is characterized in that it comprises a tertiary fuel chamber, having a rotating means to be mixed with the air and combusted well.

In addition, in the combustible powder fuel combustor of the present invention, the powder fuel supply is a funnel shape, and includes a fuel inlet passage, an air rotation guide pipe, an air rotary chamber cover, and a fuel transport air outlet, into which the powdered fuel is introduced. Characterized in that made.

In addition, in the combustible powdered fuel combustor of the present invention, the powdered fuel is introduced into the powdered fuel feeder with air using an external fan, and when introduced, the air and the powdered fuel are generally provided with respect to the inner wall surface of the cylindrical feeder. It is characterized in that the fuel inlet passage is arranged to flow in the tangential direction.

In addition, in the combustible powder fuel combustor of the present invention, a cylindrical screw drive shaft and combustion air passage, one side of the drive shaft is disposed to pass through the powder fuel reservoir to transfer the powder fuel into the pilot combustion chamber by the rotation of the screw formed on the outside thereof. The inside of the drive shaft has a tube supplied with the air supplied from the blower, one side of the drive shaft is connected to the blower to allow air to enter the tube, the other side through the cutting surface and the cylindrical surface of the drive shaft A screw drive shaft and combustion air passage in which an air inlet passage is formed to allow air to flow out of the pipe; A funnel-shaped blowing nozzle attached to the screw drive shaft and the other cut portion of the combustion air passage, wherein the nozzle has a larger diameter attached to the cutting surface of the screw drive shaft and the smaller diameter forms a secondary combustion chamber at a rear end thereof. A blow nozzle configured to be inserted into the inlet of the nozzle having a diameter smaller than that of the drive shaft in a non-contact manner; A cylindrical furnace secondary passage, wherein the furnace secondary passage surrounds the screw drive shaft at a distance from the outer side of the screw drive shaft and the combustion air passage, and at one side thereof to the fuel reservoir separator. A heating passage secondary passage which is attached to an outer circumference of the nozzle-shaped primary combustion chamber inlet as a funnel shape and prevents combustible gas generated from the screw drive shaft and the combustion air passage therein from going out; A cylindrical pilot burner furnace surrounding the furnace secondary passage in a state spaced apart from the outside of the furnace secondary passage by a predetermined distance, wherein the high heat generated from the pilot burner is transferred to the inside of the furnace and is transmitted. One side is sealed by the fuel reservoir and the other side is sealed by the separator so that the high heat is not discharged to the outside, and the high heat generated from the pilot burner heats the powder fuel inside the secondary passage to generate flammable gas. It characterized in that it comprises a pilot burner heating furnace.

In addition, in the combustible powder fuel combustor of the present invention, the internal temperature of the pilot combustion chamber is preferably increased to 500 to 600 ° C.

In addition, in the combustible powder fuel combustor of the present invention, the screw drive shaft and the fuel air passage is rotated by a motor connected to one side, characterized in that for transporting the powder fuel to the combustion chamber by the rotation of the screw formed on the outside of the drive shaft. do.

In addition, in the combustible powder fuel combustor of the present invention, the pilot burner heating furnace is characterized in that the pilot burner fixed propeller is formed so that the flame generated from the pilot burner can be circulated smoothly in the heating furnace. .

In addition, in the combustible powder fuel combustor of the present invention, the flame of the pilot burner is transmitted to the nozzle inlet of the primary combustion chamber to increase combustion by mixing the combustible gas and air generated from the powder fuel.

In addition, the combustible powdered fuel combustor of the present invention is characterized in that the rotating means has a spiral structure, the gas discharged through the nozzle is a rotational movement.

In addition, in the combustible powder fuel combustor of the present invention, the tertiary combustion chamber is characterized in that it comprises a flame discharge port for discharging the flame to the outside after the combustible gas and air is mixed and combusted.

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. These embodiments are presented for the convenience of description only, and not for limiting the present invention to specific devices.

First, the fuel material that can be burned in the combustor according to the present invention includes flammable waste plastic, waste wood, sludge, food waste, and the like. These wastes are first crushed or crushed and mixed. Subsequently, it is extruded into a predetermined shape and pulverized into fine particles. The wastes are then used as fuel in the combustor of the present invention after being crushed into fine particles. In this combustion process, the high temperature can be realized and thus close to the complete combustion, thereby minimizing the secondary pollution generated during the disposal of the waste. .

In general, the method of burning wastes involves directly burning a flame with fuel, and indirectly raising the ambient temperature to a high temperature without directly contacting the spark to generate a flammable gas in the fuel and supplying oxygen to the flammable gas. There is a method of burning. In general, since the latter generates less residue after combustion than the former, the combustor of the present invention is designed to combust by the latter method. The combustor according to the invention indirectly heats the powdered fuel so that industrial waste is not only disposed of properly, but also energy is obtained as a by-product thereof.

Prior to combustion, techniques for shredding and mixing industrial waste, extruding to a certain shape and powdering them have been known. Therefore, the description of the method and procedure for appropriately pretreating such waste for combustion will be omitted.

1 and 2 is a view showing the configuration of the powdered fuel combustor according to the present invention.

First, a description will be given of the fuel transfer process. As described above, the solid fuel such as industrial waste is powdered and stored in storage (not shown), and then flows into the powder fuel feeder 110 provided at the upper side of the combustor using a screw or a transfer fan. The powder fuel supply 110 has a funnel shape, the fuel inlet passage 111, the air rotation induction pipe 112, the air rotation chamber cover 113, and the fuel transport air outlet through which the powdered fuel is introduced ( 114).

The process of supplying the fuel powdered through the powder fuel supply to the combustor of the present invention is as follows. First, when the fuel powdered by using an external fan or the like flows into the powder fuel supply unit 110 through the fuel inlet passage 111 together with air, the fuel and air flow into the inner cylinder of the air rotation induction pipe 112. It will rotate along the horizontal wall of. This rotation is made possible by the relative position and attachment state of the air rotation guide tube 112 and the fuel inlet passage 111. If the shaft of the fuel inlet passage 111 is formed toward the shaft of the air induction pipe 112, the fuel is blown in the process of injecting the powdered fuel and a part through the upper fuel transport air outlet 114 Outflow. Therefore, as can be seen in the figure, the axis of the fuel inlet passage 111 is formed obliquely toward the inner wall surface of the air rotation guide tube 112. The introduced air and the powdered fuel is first introduced into the air rotation guide tube 112 and then hits the inner wall, and the air and the powdered fuel are rotated along the curved surface of the cylinder. In this process, the powdered fuel is centrifuged, that is, the fuel is rotated along the inner wall on the one hand and moved downward by gravity, so that the powdered fuel eventually moves in a spiral motion under the spiral. It slides into the storage compartment 120. At this time, the air is discharged to the outside through the fuel transfer air outlet 114 attached to the upper portion of the powder fuel separator (112).

Now, the combustion process of the powdered fuel is described as follows. The combustion of the powdered fuel is divided into three stages. That is, first, by operating the pilot burner to raise the temperature of the combustion chamber above a certain temperature, the primary combustion chamber for burning by mixing the high-temperature combustible gas generated from the powdered fuel and the air supplied through the blower, and the 1 The secondary combustion chamber which mixes the non-combustion gas of the powder fuel discharged from the secondary combustion chamber with air again and burns it in a high temperature combustion chamber, and the non-combustion gas discharged from the secondary combustion chamber is mixed with air again and burns it in a high temperature combustion chamber. It is a multi-stage combustion system through the third combustion chamber.

First, a process of heating the pilot combustion chamber will be described as a preliminary step. The pilot burner 140 is used to heat the combustion chamber, and the pilot burner uses the air introduced through the pilot burner air passage 141 to burn fuel such as petroleum to heat the combustion chamber. Air used for burning the burner is supplied through the blower 130 outside the combustor.

As such, the flame generated by the pilot burner 140 flows into the pilot burner heating furnace 150. At this time, the hot air heats the secondary passage 160 in the pilot burner heating furnace to allow high heat to be transferred therein. On the other hand, the high heat inside the pilot burner heating furnace is also moved to the heating furnace outside the pilot burner heating furnace 150 via a passage between the heating furnace 150 and the fuel chamber separator 121. In this process, the flame heat generated by the burner is rotated by the propeller 151 fixed between the pilot burner heating furnace 150 and the heating furnace secondary passage 160 to be uniformly transmitted to the inside of the pilot burner heating furnace.

When the pilot burner is operated to raise the temperature of the pilot burner furnace to an appropriate temperature, preferably 500 to 600 ° C., the conditions for burning various kinds of powdered waste fuels are now satisfied. The combustion process is as follows.

When the internal temperature of the combustion chamber rises to a constant temperature (500 to 600 ° C. in this embodiment), the motor 160 provided on the outside of the combustor is driven to reduce the speed reducer 161 connected to the motor and to the speed reducer. The reducer shaft 162 is operated. The reducer shaft 162 is connected to the screw drive shaft and the combustion air passage 170 through a power transmission coupling 163. Therefore, the screw drive shaft and the combustion air passage 170 is rotated by the rotation of the motor. A spiral screw (not shown) is formed outside the screw drive shaft and the combustion air passage 170, so that the powdered fuel placed on the other side is forwarded when the drive shaft rotates.

That is, as can be seen in Figure 2, the powdered fuel is accumulated in the fuel storage chamber 120 placed under the powder fuel supply 110 to stand by, the center of the storage chamber 120 is the screw drive shaft and combustion air When the passage 170 passes and the motor 160 rotates, the powder fuel is transferred to the pilot burner combustion chamber by a screw formed on the outside thereof.

As such, the powdered fuel transported by the screw passes through the inside of the secondary passage in the furnace that is already heated to a high temperature in the process of being transferred into the combustion chamber, where the powder fuel generates flammable gas by indirect heating and powder fuel Is transformed into dust. This combustible gas generation process is accelerated as the powdered fuel is transferred through the screw toward the primary combustion chamber. This is because the powdered fuel receives more indirect heat as it moves through the combustion chamber, and the closer it is to the pilot burner, the higher the ambient temperature.

As such, the combustible gas generated from the powdered fuel in the pilot burner heating furnace 150 is introduced into the primary combustion chamber together with the residue and combusted. The process of combustible gas burning in the primary combustion chamber is as follows. The combustible gas generated in the pilot burner furnace 150 stays in the secondary passage of the furnace and is forcibly transferred to the primary combustion chamber. This transfer process is made possible by the air flowing out of the blowing nozzle 180 formed at the end of the screw drive shaft and the combustion air passage 170 and the cut portion of the combustion air passage 170. That is, as can be seen in Figure 2, the blow nozzle 18 is a funnel-shaped tube of different diameters on the left and right, the air generated in the air inlet passage 171 through the blower nozzle having a large diameter toward the smaller blow nozzle When it moves, it acts as a venturi tube, so when the air passes through the blow nozzle, the air pressure is lowered there.

On the other hand, the inlet of the gas and air mixing nozzle 190 which is the primary combustion chamber is connected to the outlet of the small diameter of the blowing nozzle, but not sealingly connected, the outlet of the blowing nozzle 180 is a gas and the outlet is slightly a gap It is inserted at the inlet of the air mixing nozzle 190. Therefore, when air enters the primary combustion chamber through the blow nozzle 180, the combustible gas existing in the surroundings is sucked in. Through this process, combustible gas generated outside the screw drive shaft is continuously introduced into the primary combustion chamber 190.

As such, combustible gas and air introduced into the primary combustion chamber are mixed and combusted. That is, the combustible gas is a hot gas, and is combusted while being oxidized while being mixed with oxygen in the air. In this process, the primary combustion chamber, that is, the gas and air mixing nozzle, is heated to a high temperature to heat the internal air of the secondary combustor, which is its outer portion, to a high temperature.

Gases not combusted in the combustible gas of the powder fuel discharged through the outlet of the primary combustion chamber are introduced into the secondary combustion chamber. As can be seen in the figure, the secondary combustion chamber has a cap 200 in the front and a primary combustion chamber in the center. That is, the secondary combustion chamber is arranged outside the primary combustion chamber. In addition, the screw 201 is formed on the outside of the nozzle of the primary combustion chamber, so that the gas and high heat discharged through the outlet of the primary combustion chamber are reflected by the front cap 200 and flowed back through the screw while being in the secondary combustion chamber. To be evenly distributed. This process ensures that combustible gases that have not yet been combusted mix well with air, thus facilitating combustion.

Among the combustible gases of the powder fuel discharged through the outlet of the secondary combustion chamber, the still unburned gas is discharged into the tertiary combustion chamber. The tertiary combustion chamber is arranged behind the secondary combustion chamber and the high heat generated in the secondary combustion chamber is used to heat the tertiary combustion chamber. For this purpose, the outlet 202 of the secondary combustion chamber, as can be seen in the figure, is arranged at the rear of the secondary combustion chamber so that the discharged gas reaches the tertiary combustion chamber via the outer wall of the secondary combustion chamber. In addition, the gas inlet of the third combustion chamber, that is, the gas outlet of the secondary combustion chamber has a screw shape, so that the gas is rotated while the gas is discharged from the secondary combustion chamber to the tertiary combustion chamber. As the exhaust gas rotates in this way, it is easier to mix with air, and thus combustion of the gas is further promoted.

As such, when the combustible gas passing through the secondary combustion flows into the tertiary combustion chamber, the gas inlet of the tertiary combustion chamber is preferably configured in a spiral shape so that the gas rotates. As can be seen in the drawing, the tertiary combustion chamber is the cap portion of the secondary combustion chamber and the portion of the gas inlet is formed along the outer side of the secondary combustion chamber, so that the internal temperature of the tertiary combustion chamber is maintained at a high temperature, so that the primary and Even in the secondary combustion chamber, unburned gas is burned. In the third combustion chamber, the front of the third combustion chamber discharges dust such as combustible gas waste combusted in the third combustion chamber to the outside of the combustor through the flame discharge port 300.

As described above, by implementing the combustible powder fuel combustor according to the present invention, it is possible not only to safely incinerate industrial wastes while protecting the environment, but also to obtain energy in the incineration process. In other words, combustible wastes are crushed or pulverized, mixed, extruded, and then crushed into fine particles and combusted at a high temperature, thereby reducing secondary pollution to a minimum, and using incineration heat of the wastes itself repeatedly over three times. Incineration results in a combustor with minimal energy savings and an efficient energy supply. That is, external emission is possible with a burned gas flame at 1200 ° C.

Preferred embodiments of the present invention described above are arbitrarily selected to aid the understanding of the present invention, and the present invention should not be construed as being limited to these embodiments. The invention is only limited by the appended claims. Therefore, various embodiments are possible in addition to the presented embodiments without departing from the spirit of the invention defined in the appended claims, it can be seen that the replacement or replacement of the parts used.

Claims (10)

In the combustible powdered fuel combustor for pulverizing and extruding combustible waste, etc., and then pulverizing into fine particles, A powder fuel supply for introducing the fuel powdered into the fine particles into a combustor; A powder fuel storage chamber disposed under the powder fuel supply and stored before the powder fuel is combusted; A pilot burner attached to an outside of the combustor to generate a combustible gas by heating the powder fuel supplied from the powder fuel supply, and combusting it; A blower for supplying combustion air into the pilot burner and the combustion chamber; Since the powder fuel is heated using the flame of the pilot burner, a pilot combustion chamber for generating a high-temperature combustible gas and supplying it with the outside air to the primary combustion chamber, A nozzle-shaped primary combustion chamber disposed at a rear end of the pilot combustion chamber and mixing the high-temperature combustible gas and air supplied from the pilot combustion chamber and combusting using a flame of a pilot burner; A secondary combustion chamber disposed at the rear end and the surroundings of the primary combustion chamber, wherein the secondary combustion chamber is composed of a separator that separates unburned gas and high heat from the powdered fuel discharged from the primary combustion chamber from the outside. The secondary combustion chamber is placed in the inner center of the secondary combustion chamber so that the high heat generated in the primary combustion chamber heats the secondary combustion chamber to re-burn the gas of the powder fuel introduced into the secondary combustion chamber. A secondary combustion chamber having a screw fixed therein to allow the combustible gas in the secondary combustion chamber to mix well with air and be combusted; A third combustion chamber disposed adjacent to the secondary combustion chamber and surrounding a part of the secondary combustion chamber and heated to a high temperature by self-radiated heat of the secondary combustion chamber, the non-combustible gas of the powder fuel discharged from the secondary combustion chamber. The combustible powdered fuel combustor of claim 1, further comprising a tertiary fuel chamber having a rotating means for mixing the air with the air. The method of claim 1, The powdered fuel feeder is a funnel-shaped, combustible powdered fuel combustor, characterized in that it comprises a fuel inlet passage, the air rotation induction pipe, the air rotary chamber cover, and the fuel transfer air discharge port into which the powdered fuel flows. The method of claim 2, The powdered fuel is introduced into the powder fuel feeder with air by using an external fan, and when the fuel is introduced, a fuel inflow passage is disposed such that air and powdered fuel are generally tangential to the inner wall of the cylindrical feeder. Combustible powder fuel combustor, characterized in that. The method of claim 1, wherein the pilot combustion chamber, Cylindrical screw drive shaft and combustion air passage, one side of the drive shaft is arranged to pass through the powder fuel reservoir to transfer the powder fuel into the pilot combustion chamber by the rotation of the screw formed on the outside, the inside of the drive shaft is supplied from the blower It has a tube is supplied air, one side of the drive shaft is connected to the blower to allow air to flow into the tube, the other side of the air inlet passage so that the air flows out from the tube through the cutting surface and the cylindrical surface of the drive shaft Screw drive shaft and combustion air passage formed with A funnel-shaped blowing nozzle attached to the screw drive shaft and the other cut portion of the combustion air passage, wherein the nozzle has a larger diameter attached to the cutting surface of the screw drive shaft and the smaller diameter forms a secondary combustion chamber at a rear end thereof. A blow nozzle configured to be inserted into the inlet of the nozzle having a diameter smaller than that of the drive shaft in a non-contact manner; A cylindrical furnace secondary passage, wherein the furnace secondary passage surrounds the screw drive shaft at a distance from the outer side of the screw drive shaft and the combustion air passage, and at one side thereof to the fuel reservoir separator. And the other side is a funnel shape attached to the outer periphery of the nozzle-shaped primary combustion chamber inlet, the secondary passage of the furnace to prevent the combustible gas generated in the screw drive shaft and the combustion air passage therein to go out; A cylindrical pilot burner furnace surrounding the furnace secondary passage in a state spaced apart from the outside of the furnace secondary passage by a predetermined distance, wherein the high heat generated from the pilot burner is transferred to the inside of the furnace and is transmitted. One side is sealed by the fuel reservoir and the other side is sealed by the separator so that the high heat is not discharged to the outside, and the high heat generated from the pilot burner heats the powder fuel inside the secondary passage to generate flammable gas. Combustible powdered fuel combustor characterized in that it comprises a pilot burner heating furnace. The method of claim 4, wherein Combustible powdered fuel combustor, characterized in that the internal temperature of the pilot combustion chamber is 500 to 600 ℃. The method of claim 4, wherein The screw drive shaft and the fuel air passage is rotated by a motor connected to one side thereof, combustible powder fuel combustor, characterized in that for transporting the powder fuel to the combustion chamber by the rotation of the screw formed on the outside of the drive shaft. The method of claim 4, wherein Combustible powdered fuel combustor, characterized in that the pilot burner fixed propeller is formed in the pilot burner furnace to ensure that the flame generated from the pilot burner is circulated smoothly in the furnace. 5. The combustible powder fuel combustor of claim 4, wherein a flame of a pilot burner is transmitted to a nozzle inlet of the primary combustion chamber to increase combustion by a mixture of combustible gas and air generated in powder fuel. 6. The method of claim 8, The rotating means has a spiral structure, the gas discharged through the nozzle is a combustible powder fuel combustor, characterized in that the rotational movement. The method of claim 4, wherein the tertiary combustion chamber, Combustible powdered fuel combustor characterized in that it comprises a flame outlet for allowing the flame is discharged to the outside after the combustible gas and air is mixed and combusted.