KR20190099640A - Circular Grate Firing Equipment - Google Patents

Abstract

Disclosed is a circulation type grate combustion furnace, comprising: a fuel insertion hopper (10) into which fuel is inserted; a fuel insertion conveyor (20) transporting the fuel inserted into the fuel insertion hopper (10); a grate furnace main body (30) having a fuel insertion unit (31) which is provided at one side upper portion, and into which the fuel transported by the fuel insertion conveyor (20) and falling is inserted, a grate (32) which has one side end portion located at a lower portion of the fuel insertion unit (31), has the fuel, inserted by the fuel insertion unit (31), accumulated, and is configured as a caterpillar to transport the accumulated fuel, a burner (33) installed adjacent to the fuel insertion unit (31), and igniting the fuel transported by the grate (32), an air insertion unit (34) allowing air to be inserted into the accumulated fuel transported by the grate (32) between the grates (32) of the caterpillar, a combustion gas outlet (35) provided at an upper portion, and allowing combustion gas of the fuel to be discharged, and a cinder discharge unit (36) located at a lower portion of the other side end portion of the grate (32), and allowing the cinder remaining after the fuel transported by the grate (32) is combusted to fall, thereby discharging the fallen cinder; a cinder discharge conveyor (40) provided at a lower portion of the cinder discharge unit (36) of the grate furnace main body (30), and transporting the fallen cinder; a uniform insertion unit (100) provided to supply the fuel in a uniform manner; and a combustion facilitation unit (200) provided to mix the fuel loaded on the grate (32) in upper and lower directions.

Description

Circular Grate Firing Equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating grate combustion furnace that incinerates solid fuels such as biosrf (wood chips, other), wood pellets, SRFs (wastewood, WCF (wood chip fuel, etc.), coal).

In general, the grate combustion furnace is a device that burns while transporting solid fuel such as bio SRF (wood chips, etc.), wood pellets, SRF (waste wood, WCF (Wood Chip Fuel, etc.), coal).

Such a grate combustion furnace burns while transporting a solid fuel by lamination.

Since fuel is stacked and transported by the grate formed by the caterpillar, the fuel located at the upper part burns well, whereas the fuel located at the lower part does not burn, and therefore, a combustion furnace is preferably provided to promote combustion of the solid fuel. Do.

As a device for promoting combustion of fuel in a conventional grate combustion furnace, a fixed plate installed at a predetermined interval was used.

The stationary plate is to expose the fuel located at the bottom to promote the combustion of the solid fuel, but the effect is only at the site where the stationary plate is installed, there is a problem that is difficult to promote combustion where the stationary plate is not installed. In addition, since the fuel is transported by the grate formed by the caterpillar, the fuel is not transported in the place where the stationary plate is installed and is pushed backward by the stationary plate, so that the fuel is accumulated and the transfer of fuel by the grate is not smooth. have.

In addition, the conventional grate combustion furnace is a method of ventilating from the top to the lower part when the air is introduced, the typical downward-ventilated grate combustion furnace No. 20-0226139 (designated name: waste agitation grate) Downflow type waste incinerator having a has been disclosed.

The apparatus is provided with a combustion air supply nozzle at an upper portion of the furnace to supply air into the furnace. As the air is supplied to the upper part of the fuel transported by the grate through the combustion air supply nozzle provided in the upper part of the combustion furnace, the amount of air supplied to the fuel is not enough, so that the combustion is not completed completely. There is a problem that the efficiency of the furnace is low.

In order to solve such a problem, the applicant has been registered and proposed an improved cyclic grate combustion furnace through Patent Application 10-2016-0114411.

That is, the cyclic grate combustion furnace registered and registered by the present applicant as shown in Figure 1, the fuel input hopper 10 into which the fuel is injected; A fuel injection conveyor 20 for transferring fuel injected into the fuel injection hopper 10; The fuel input unit 31 is provided on one side and the fuel is transferred by the fuel input conveyor 20 is dropped into the fuel input unit 31, one end is located below the fuel input unit 31 and the fuel input unit ( The fuel injected from 31 is stacked, the grate 32 is transported in an infinite track, and the fuel is installed in close proximity to the fuel input part 31 and ignited by the grate 32. Between the burner 33 and the grate 32 of the caterpillar, the air inlet 34 to inject air into the stacked fuel transported by the grate 32, and the combustion gas of the fuel Combustion gas discharge port 35 for discharging and the ash discharge portion 36 positioned below the other end of the grate 32 and transported by the grate 32 to burn the remaining ash falls and discharged the falling ash Grate with) Main body 30; A ash discharge conveyor 40 provided below the ash discharge unit 36 of the grate furnace main body 30 to transfer the dropped ash; It is made, including.

The present applicant is registered and registered in advance, the cyclic grate combustion, the fuel is not accumulated, the transfer by the grate facilitates the fuel located in the lower part to expose the fuel located at the top to accelerate the combustion of the fuel to complete combustion of the fuel It will be possible to improve the combustion efficiency.

In addition, by cooling the inside of the rotary shaft to prevent thermal deformation of the rotary shaft installed in the grate furnace it is possible to extend the life of the rotary shaft.

In addition, it is possible to improve the efficiency of the combustion furnace by allowing the air to be injected into the fuel laminated in the upper grate between the endless track grate and the sufficient amount of air supplied to the fuel to achieve complete combustion.

However, while the present invention is filed by the applicant, the circular grate combustion furnace has the same effect as described above, but in recent years, there is a problem that does not greatly meet the needs of consumers who want more efficient combustion and faster operation. .

In order to solve such a problem, the present invention, the present invention is applied for a circular grate combustion furnace that can be supplied more efficient fuel while maintaining the advantages of the prior-registered registered grate combustion furnace as it is, and further increase the combustion efficiency The purpose is to provide a furnace.

In order to achieve the above object, the circulating grate combustion furnace according to the present invention includes a fuel injection hopper into which fuel is injected, a fuel injection conveyor for transporting fuel introduced into the hopper, and a fuel injection conveyor. A fuel input section into which the dropped fuel is introduced, a fuel input from the fuel input section is stacked, and a grate for transferring the stacked fuel in an infinite track, a burner for igniting fuel transferred by the grate, and a grate. An air inlet for introducing air to the stacked fuel transported by the fuel, a combustion gas discharge port for discharging the combustion gas of the fuel, and a lower portion of the grate, which is burned and the remaining ash falls and discharges the falling ash The grate furnace main body provided with the ash discharge part to be transported to the lower portion of the ash discharge part of the grate furnace main body is provided In the recirculating grate combustion furnace having a re-discharge conveyor to be installed in the lower portion of the fuel input unit of the grate furnace main body and a uniform input unit for stacking the injected fuel to the grate with a uniform thickness, the uniform input unit 100 ) Is located on the lower surface of the fuel inlet 31 of the grate furnace body 30 and is installed at right angles to the fuel transport direction of the grate 32, and both ends protrude out of the body grate furnace 30. A rotating shaft 110; Blades 120 which are provided at equal intervals on the rotation shaft 110 and are inclined at an angle in a range of 15 to 30 degrees around the rotation shaft, and ribs 121 are radially formed at both outer surfaces thereof; A sealing part fixedly installed outside the grate furnace body 30 adjacent to the rotary shaft 110 to rotatably support the rotary shaft 110 and sealing a gap between the rotary shaft 110 and the grate furnace body 30. 130; The grate grate is installed outside the main body 30, the drive unit 140 for rotating the rotation shaft 110; characterized in that it comprises a.

Ribs 121 formed on both outer surfaces of the blade 120 of the present invention is characterized by being formed in three to six equal angles.

The drive unit 140 of the present invention, the motor 141, the reducer 142 is connected to the motor 141 to reduce the rotation of the motor 141, the drive is connected to the reducer 142 and rotated It is characterized in that it comprises a sprocket 143, and driven sprocket 144 is coupled to the drive sprocket 143 and rotated, coupled to the rotating shaft 110 to interlock it.

The grate furnace of the present invention is installed on the grate 32 located in the middle portion of the grate 32 in the main body 30 and in contact with the fuel transported by the grate 32 to transport the fuel located below Further comprising a combustion accelerator 200 for promoting the combustion of the fuel by exposing the fuel located in the lower portion, the combustion accelerator 200, the grate 32 is located in the middle portion in the main body 30 as a grate A hollow shaft 210 which is installed to extend across both sides of the both ends and is protruded to the outside of the main body 30 by a grate, and has a hollow portion 211 formed therein for circulation of cooling water; It is arranged along the outer circumferential surface of the hollow shaft 210 at a predetermined interval, the body 221 is inserted into the outer circumferential surface of the hollow shaft, and extends at a predetermined curved angle toward the outside from one side of the body 221 and the fuel and A hook ring 220 formed of a wing piece 222 contacting and transporting a fuel located at a lower side in an upward direction; A sealing part 230 fixedly installed outside the grate body 30 and rotatably coupled to both ends of the hollow shaft 210 and sealing a gap between the hollow shaft and the grate body 30; The grate is installed outside the main body 30, the drive unit 240 for driving the rotation of the hollow shaft 210; characterized in that it comprises a.

The hook ring 200 of the present invention is arranged at regular intervals along the outer circumferential surface of the hollow shaft 210, it is characterized in that they are installed alternately.

The drive unit 240 of the present invention, the motor 241, the reducer 242 is connected to the motor 241 to reduce the rotation of the motor, the drive sprocket 243 is connected to the reducer 242 and rotated And a driven sprocket 244 coupled to the drive sprocket 243 and rotated and coupled to the hollow shaft 210 to interlock it.

One end of the hollow shaft 210 of the present invention is in communication with the hollow portion 211, the cooling water inlet 250 provided with a cooling water inlet 251 for introducing the cooling water therein is rotatably coupled, the hollow The other end of the shaft 210 is in communication with the inside of the hollow portion 211 is characterized in that the cooling water discharge unit 260 is provided with a cooling water discharge hole 261 is rotatably coupled to discharge the cooling water.

The present invention provides the advantages of the circular grate combustion furnace registered and registered by the present applicant, that is, fuel is not accumulated and smoothly transported by the grate, thereby exposing the fuel located at the bottom to promote combustion of the fuel. This allows the complete combustion of the fuel to improve combustion efficiency, the cooling of the inside of the rotating shaft to prevent thermal deformation of the rotating shaft installed in the grate furnace, and to extend the life of the rotating shaft. Efficient fuel while maintaining the benefits of improving combustion efficiency by allowing air to be injected into the fuel stacked on top of the grate between the orbital grate and sufficient amount of air supplied to the fuel to achieve complete combustion. Can be added and the simple structure will increase the combustion efficiency. By doing so, there is an effect that can satisfy the needs of consumers using it.

1 is a block diagram showing the overall structure of the cyclic grate combustion furnace registered and registered by the present applicant.
2 is a plan view of a circulating grate combustion furnace according to the present invention.
Figure 3 is a front view showing the re-extracted portion in the recirculating grate combustion furnace according to the present invention.
Figure 4 is a schematic view showing an extract of the uniform input unit in the recirculating grate combustion furnace according to the present invention.
5 is a configuration diagram showing a drive unit of the uniform charging unit in the recirculating grate combustion furnace according to the present invention.
Figure 6 is a schematic view showing an extract of the combustion accelerator in the circulation grate combustion furnace according to the present invention.
7 is a configuration diagram showing an extract of the hook ring constituting the combustion accelerator in the circulation grate combustion furnace according to the present invention.
8 is a block diagram showing a drive unit for the combustion accelerator in the circulation grate combustion furnace according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described a circulating grate combustion furnace of the present invention.

Hereinafter, the present application will be described with reference to a circular grate combustion furnace registered and filed by the applicant and the same reference numerals are given to the same parts.

1 is a schematic view showing the overall structure of a cyclic grate combustion furnace registered and registered by the present applicant, Figure 2 is a plan view of a circulating grate combustion furnace according to the present invention, Figure 3 is a circular grate combustion furnace according to the present invention In Figure 4 is a front view showing the re-collection portion, Figure 4 is a schematic diagram showing an excerpt in the circulating grate combustion furnace according to the present invention, Figure 5 is a circulating grate combustion furnace according to the present invention, 6 is a configuration diagram showing a driving unit of the uniform input unit, Figure 6 is a configuration diagram showing an excerpt of the combustion accelerator in the circulation grate combustion furnace according to the present invention, Figure 7 is a combustion acceleration in the circulation grate combustion furnace according to the present invention Fig. 8 is a block diagram showing the hook ring constituting the part, and Fig. 8 is a block diagram showing a driving accelerator in the combustion grate combustion furnace according to the present invention.

As shown therein, the circulating grate combustion furnace according to the present invention includes a fuel injection hopper 10 into which fuel is injected, a fuel injection conveyor 20 for transferring fuel injected into the hopper 10, The fuel input unit 31 into which the fuel dropped by the fuel injection conveyor 20 is dropped and the fuel injected from the fuel input unit 31 are stacked, and the fuel is transferred to the endless track to transfer the stacked fuel. A grate 32, a burner 33 for igniting the fuel conveyed by the grate 32, an air inlet 34 for injecting air into the stacked fuel conveyed by the grate 32, and fuel Grate furnace having a combustion gas discharge port 35 for discharging the combustion gas of the combustion gas, and the ash discharge portion 36 positioned below the other end of the grate 32 and the ash remaining after combustion and falling ash is discharged. Body 30 and grate furnace body 30 The ash discharge conveyor 40 which is provided in the ash discharge unit lower part 36 and transports the dropped ash is installed in the lower part of the fuel injection unit 31 of the grate furnace main body 30, and the injected fuel is uniformly applied to the grate 32. It is provided with a uniform input unit 100 to be stacked in one thickness.

At this time, the uniform input unit 100 as described above is substantially provided with one characteristic element of the present invention, and its detailed structure is as follows.

As shown in FIGS. 2 to 5, the uniform input unit 100 is roughly divided into a rotating shaft 110, a blade 120, a sealing unit 130, and a driving unit 140.

First, the rotating shaft 110 is located at the lower surface of the fuel input part 31 of the main body 30 by the grate, and is installed at right angles to the fuel transfer direction of the grate 32.

In addition, both ends of the rotary shaft 110 is installed to protrude out of the main body 30 with a grate.

The blades 120 are provided at equal intervals on the above-described rotation shaft 110, and are inclined at a predetermined angle with respect to the rotation shaft 110.

At this time, the inclination angle of the blade 120 is preferably installed to be inclined at an angle in the range of 15 to 30 degrees around the rotation axis.

By inclining the blade 120 in this way, it is possible to buffer the drop shock when compared to being installed vertically when the fuel falls through the fuel inlet 31 so that the impact applied to the grate 32 It has the effect of buffering and has the additional effect of smoothly guiding the fuel downwards.

Meanwhile, ribs 121 are formed radially on both outer surfaces of the blade 120 as shown in FIG. 2, and the ribs 121 are preferably formed at three to six equal angles.

The rib 121 of the blade 120 performs an additional function of evenly mixing the injected fuel and at the same time has an additional function of promoting combustion by causing the flow of air into the main body 30 by the grate during the rotation of the blade 120. Perform.

The sealing unit 130 is fixedly installed on the outside of the grate furnace body 30 adjacent to the rotary shaft 110, and supports the rotary shaft 110 to be rotatable, as well as the rotary shaft 110 and the grate furnace body. It performs the function of sealing the clearance between 30.

Finally, as shown in FIG. 5, the driving unit 140 is installed outside the main body 30 with a grate and performs a function of rotationally driving the rotating shaft 110. Referring to the structure, the applicant is registered and registered in advance. That is, the same structure as that of the motor 141, the reducer 142 is connected to the motor 141 to reduce the rotation of the motor 141, the drive sprocket 143 is connected to the reducer 142 and rotated, the drive It is composed of a driven sprocket 144 is coupled to the sprocket 143 and the chain is rotated and coupled to the rotating shaft 110 to interlock it.

On the other hand, the above-described grate furnace upper portion of the grate 32 located in the middle portion of the grate 32 in the body 30 is in contact with the fuel transported by the grate 32 so that the fuel located in the lower portion is transferred upwards It is preferable to further include a combustion promoting unit 200 for promoting the combustion of the fuel by exposing the fuel.

That is, the combustion accelerator 200 performs a function of increasing the combustion efficiency by allowing the fuel to be evenly burned by stirring the fuel loaded on the grate 32 up and down.

As shown in FIGS. 6 to 8, the combustion accelerator 200 is largely classified into a hollow shaft 210, a hook ring 220, a seal 230, and a driver 240.

First, the hollow shaft 210 is installed to be long across both sides of the upper part of the grate 32 located in the middle portion of the grate body 30, and in particular, both ends are installed to protrude out of the grate body 30. Inside the hollow part 211 is formed for cooling water circulation.

As shown in FIG. 7, the hook rings 220 are arranged at predetermined intervals along the outer circumferential surface of the hollow shaft 210 to transfer the fuel located in the lower portion of the loaded fuel of the grate 32 upward. By performing the stirring operation to increase the combustion efficiency.

The hook ring 220 includes a body 221 inserted into an outer circumferential surface of the hollow shaft 210 and a wing piece 222 extending from a side of the body 221 at a predetermined curved angle toward the outside and contacting the fuel. )

On the other hand, when the hook ring 200 is installed on the hollow shaft 210 arranged at a predetermined interval, it is preferable for the stirring efficiency to be installed alternately.

In addition, the hook ring 200 is fixed on the hollow shaft 210 by welding or the like or fixed in various other ways.

The sealing unit 230 is fixed to the outer grate main body 30, the both ends of the hollow shaft 210 is rotatably coupled and the function to seal the gap between the hollow shaft 210 and the grate main body 30 Do this.

As shown in FIG. 8, the driving unit 240 is installed outside the main body 30 with a grate and is a power source for rotationally driving the hollow shaft 210. In view of its structure, the motor 241 and the motor 241 are connected to the motor. Reducer 242 to reduce the rotation of the drive sprocket 243 is connected to the reducer 242 is rotated, driven sprocket 243 is coupled to the chain is rotated and driven coupled to the hollow shaft 210 is driven It consists of a sprocket 244.

On the other hand, the hollow shaft 210 and the hook ring 220 and the like of the combustion promotion unit 200 is located inside the main body 30 with a grate, so that the possibility of being damaged by high temperature heat in the combustion process is caused. Cooling water is circulated inside the hollow shaft 210, that is, inside the hollow part 211, as the cooling means for the cooling.

To this end, one end of the hollow shaft 210 is in communication with the hollow portion 211, the cooling water inlet 250 provided with a cooling water inlet 251 for introducing the cooling water therein is rotatably coupled, the hollow facing the The other end of the shaft 210 is rotatably coupled to the cooling water discharge part 260 provided with a cooling water discharge hole 261 so as to communicate with the inside of the hollow portion 211 to discharge the cooling water.

That is, in the cooling water tank (not shown), the coolant is introduced into the hollow part 211 of the hollow shaft 210 through the coolant inlet 250 and the coolant is repeatedly circulated through the coolant outlet 260 located at the other end. By doing so, the hollow shaft 210 and the hook ring 220 fixed thereto may be cooled.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments but may be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing to the spirit or essential features of the invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

10: fuel injection hopper 20: fuel injection conveyor
30: grate furnace body 31: fuel input
32: Grate 33: Burner
34: air inlet 35: combustion gas outlet
36: ash discharge part 40: ash discharge conveyor
100: uniform feeding unit 110: a rotating shaft
120: blade 121: rib
130: sealed 140,240: drive
141,241: Motor 142,242: Reducer
143,243: driven sprocket 144,244: driven sprocket
200: combustion accelerator 210: hollow shaft
211: hollow portion 220: hook ring
221: body of the hook ring 222 blade of the hook ring
230: sealing part (combustion promotion part)

Claims (7)

A fuel input hopper into which the fuel is injected, a fuel input conveyor for transferring the fuel injected into the hopper, a fuel input unit into which the fuel dropped by the fuel input conveyor is dropped, and fuel injected from the fuel input unit Are stacked, the grate for transporting the stacked fuel in an endless track, a burner for igniting the fuel transported by the grate, an air inlet unit for introducing air into the stacked fuel transported by the grate, and fuel A combustion grate having a combustion gas discharge port for discharging the combustion gas of the grate, and a ash discharge unit located at the lower end of the other end of the grate, and a ash discharge part for discharging the ash which is left after combustion falls, and the grate re discharge unit of the main body. A ash discharge conveyor provided at the lower part and transferring the dropped ash, and installed at the lower part of the fuel input part of the main body by the grate; Said in the injected fuel in the circulating combustion grate comprising a uniform input such that laminate with a uniform thickness on the grate,
The uniform input unit 100,
Located on the lower surface of the fuel inlet 31 of the grate furnace body 30 is installed at right angles to the fuel transfer direction of the grate 32, both ends are installed to protrude out of the body grate 30 to the grate shaft 110 )and;
Blades 120 which are provided at equal intervals on the rotation shaft 110 and are inclined at an angle in a range of 15 to 30 degrees around the rotation shaft, and ribs 121 are radially formed at both outer surfaces thereof;
A sealing part fixedly installed outside the grate furnace body 30 adjacent to the rotary shaft 110 to rotatably support the rotary shaft 110 and sealing a gap between the rotary shaft 110 and the grate furnace body 30. 130;
The grate furnace is installed outside the main body 30, the drive unit 140 for rotationally rotating the rotating shaft 110; Circular grate combustion furnace comprising a. The method of claim 1,
Rib 121 is formed on the outer surface of both sides of the blade 120, the circulation grate combustion furnace, characterized in that formed in three to six isometric. The method of claim 1,
The drive unit 140,
Motor 141,
A reducer 142 connected to the motor 141 to reduce rotation of the motor 141;
A drive sprocket 143 which is connected to the reducer 142 and rotates;
Circulating grate combustion furnace characterized in that it comprises a driven sprocket (144) is coupled to the drive sprocket (143) and rotated and coupled to the rotating shaft 110 to interlock it. The method of claim 1,
The grate is installed in the upper part of the grate 32 located in the middle portion of the grate 32 in the main body 30 and is in contact with the fuel transported by the grate 32 so that the fuel located in the lower part is transferred upward. Further comprising a combustion promoting unit 200 to promote the combustion of the fuel by exposing the fuel,
The combustion promotion unit 200 is installed to extend across both sides of the upper portion of the grate 32 located in the middle portion of the grate main body 30, both ends protrude out of the grate main body 30, the inside The hollow shaft 210 formed in the hollow portion 211 for cooling water circulation;
It is arranged along the outer circumferential surface of the hollow shaft 210 at a predetermined interval, the body 221 is inserted into the outer circumferential surface of the hollow shaft, and extends at a predetermined curved angle toward the outside from one side of the body 221 and the fuel and A hook ring 220 formed of a wing piece 222 contacting and transporting a fuel located at a lower side in an upward direction;
A sealing part 230 fixedly installed outside the grate body 30 and rotatably coupled to both ends of the hollow shaft 210 and sealing a gap between the hollow shaft and the grate body 30;
The grate furnace is installed outside the main body 30, the drive unit 240 for driving the hollow shaft 210 to rotate; circulating grate combustion furnace characterized in that it comprises a. The method of claim 4, wherein
The hook ring 220 is arranged in a predetermined interval along the outer circumferential surface of the hollow shaft 210, reciprocating grate combustion furnace, characterized in that installed alternately arranged. The method of claim 4, wherein
The drive unit 240,
Motor 241,
A reducer 242 connected to the motor 241 to reduce rotation of the motor;
A drive sprocket 243 connected to the reducer 242 and rotated;
Circulating grate combustion furnace characterized in that it comprises a driven sprocket (244) is coupled to the drive sprocket (243) is rotated and coupled to the hollow shaft (210) to interlock it. The method of claim 4, wherein
One end of the hollow shaft 210 is in communication with the hollow portion 211 is coupled to the cooling water inlet 250 is provided with a cooling water inlet 251 for introducing the cooling water therein rotatably,
The other end of the hollow shaft 210 is in communication with the inside of the hollow portion 211, the cooling water discharge portion 260 is provided with a cooling water discharge hole (261) is provided so that the cooling water is discharged circulating grate combustion, characterized in that rotatably coupled in.

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