KR101211035B1 - Boiler for refuse derived fuel - Google Patents

Abstract

PURPOSE: A boiler for waste solid fuel is provided to prevent dust of combustion gas from being stuck on a water-cooled wall and combustion furnace. CONSTITUTION: A boiler for waste solid fuel comprises a vortex generating chamber(20), a water-cooled wall(30), first, second, and third heat recovery chambers(40,50,60), first and second baffles(60,90), first and second round current walls(70,100), and a heat exchanger. The vortex generating chamber swirls flame generated in a combustion furnace(10). The water-cooled wall is connected to the upper part of the vortex generating chamber, and the first heat recovery chamber is connected to the upper part of the water-cooled wall. A wall body of the first heat recovery chamber comprises heat transfer pipes. The second heat recovery chamber is installed side by side with the first heat recovery chamber, and the third heat recovery chamber is installed side by side with the second heat recovery chamber. The first and second baffles are mounted on each ceiling of the second and third heat recovery chambers. The first and second round current walls are formed at the lower parts of the first and second baffles, respectively. The first and second round current walls lower the speed of combustion gas. The heat exchanger is connected to the first, second, third heat recovery chambers, and first and second round current walls. The heat exchanger generates steam by fluid circulation.

Description

Boiler for refuse derived fuel

The present invention relates to a waste solid fuel boiler, and more particularly, to promote the combustion efficiency of waste solid fuel to prevent dust generated in the combustion process from adhering to the inner wall of the combustion furnace, and further increase the dust collection efficiency of the combustion gas It is about a water-type boiler using waste solid fuel which can increase the heat transfer effect by minimizing the amount of dust contained in the heat-transfer tube.

Recently, the suppression and recycling of wastes generated from various workplaces and living facilities have been recognized as a top priority in solving the lack of energy resources and environmental problems. There are many studies on how to effectively use them as resources.

For example, waste solid fuel (RDF, RPF, TDF, WCF) removes non-combustible components such as water, metals, earth, glass, etc. contained in various wastes such as household waste, food waste, waste plastics, waste tires, and waste wood. Only combustible materials such as paper, plastic, rubber, and fiber are selected and processed and processed through drying, crushing, and compression molding, and they are excellent for clean treatment of waste and recycling of resources. It can be used as a fuel for power generation, which is attracting attention in various industrial fields.

In addition, a so-called solid fuel boiler system for producing heating steam or hot water for buildings using combustion gases generated during the combustion of waste solid fuel is being developed and spread in various ways.

For example, 'Heat Heat Boiler' is disclosed in Korean Patent Publication No. 10-0650383, and 'Boiler using solid fuel' is disclosed in Korean Utility Model Publication No. 20-0390958.

However, in the conventional boiler apparatus, since the amount of air required for combustion is not sufficiently and widely supplied in the combustion furnace, solid fuel is incompletely burned, and heat loss as well as combustion efficiency are remarkably decreased. As a result, sulfur dioxide, nitrogen oxides, and dioxins (Dioxin) are reduced. Various air pollutants, including the air is released into the air there is a problem that causes air pollution.

In addition, the waste solid fuel is composed of 40 to 60% or more of the components of the plastics, and as a result, various dusts such as foreign substances or twisted yarns generated during combustion are adhered to the fire wall by agglomeration and combustion. Should be removed periodically because in severe cases it will cause corrosion deformation on the inner wall and cause clinker formation or cracks, causing frequent breakdown of the boiler and emission of pollutants. In addition to the inconvenience and inconvenience, the boiler must be shut down in order to remove the dust adhering to the inner wall of the furnace, so the operation rate and productivity are inevitably deteriorated.

In addition, the combustion flame of solid waste fuel has a very high ratio of radiant heat, and in the case of a combustion furnace formed of a fireproof wall, there is a large amount of radiant heat, which causes a great waste of heat, and the high temperature radiant heat causes overheating or damage of the furnace wall. There is also a problem.

Moreover, in the conventional boiler apparatus, since the hot gas is in contact with the heat pipe and heats the fluid (water) flowing therein, when the combustion gas is in contact with the heat pipe, the temperature is reduced and the dust contained in the incomplete combustion state is removed. Most of them stick to or adhere to the surface of the heat pipes, which hinders heat transfer and increases the flow resistance of the combustion gas.To remove this, the operator must scrape the surface of the heat pipes with a brush, etc. There is an enormous time and cost problem.

On the other hand, the boiler apparatus using the high-temperature waste gas disclosed in the Republic of Korea Patent Publication No. 10-2009-0131909 cools the combustion gas below a predetermined temperature range and at the same time generates air vibration with a sonic chute blower, so that dust in the combustion gas is transferred to the heat transfer pipe. However, it is configured to prevent it from being attached to the heat exchanger in advance, but it must be provided with a separate cooling chamber for cooling the combustion gas, which is not only limited in structure and layout design but also attached to the heat exchanger tube or the heat exchanger using vibration by sound waves. Due to the characteristics of the method of physically removing the dust, there is a limit that the dust collection rate is very low to less than 20%, the efficiency and effectiveness.

In addition, since the combustion gas of 1000 ~ 1300 ℃ is delivered to the heat exchanger through the duct, the heat transfer area is large, and because of this, the size of the boiler is unnecessarily large, so the space efficiency is significantly reduced, such as having to secure too much installation space. There is also.

Republic of Korea Patent Publication No. 10-0650383 (2006.11.29) Republic of Korea Patent Publication No. 10-0762077 (2007.10.01) Republic of Korea Patent Publication No. 10-0814447 (2008.03.18) Republic of Korea Patent Publication No. 10-2009-0090174 (2009.08.25) Republic of Korea Patent Publication No. 10-2009-0131909 (2009.12.30) Republic of Korea Patent Publication No. 10-2011-0002775 (2011.01.10)

Accordingly, the present inventors focus on solving the above-mentioned matters and solve the problems to promote the combustion efficiency of solid waste fuel, thereby preventing dust generated in the combustion process from adhering to the inner wall of the combustion furnace, and improving the dust collection efficiency. The present invention was devised while devoting efforts to develop a new waste solid fuel boiler that can increase the heat transfer effect by minimizing the amount of dust adhering to the heat-transfer tube. It was completed.

It is therefore an object of the present invention to provide a waste solid fuel boiler which can prevent dust generated in the combustion process of waste solid fuel from adhering to the inner wall of the combustion furnace.

Another object of the present invention to provide a waste solid fuel boiler to improve the dust collection efficiency to minimize the amount of dust contained in the combustion gas to the heat transfer tube.

It is another object of the present invention to provide a waste solid fuel boiler which can reduce the size and installation space.

In order to achieve the object and the object as described above, a preferred embodiment of the present invention is a combustion furnace in which waste solid fuel is burned by a burner, and connected to a flame propagation path above the combustion furnace and flames on the inner circumferential surface. A vortex generating chamber having a plurality of air spray nozzles for vortexing, a water cooling wall connected to an upper portion of the vortex generating chamber, and connected to an upper portion of the water cooling wall, and a first exhaust passage is formed on one side thereof, and the wall is a heat transfer tube. The first heat recovery chamber formed and one side of the first exhaust passage and the upper side of the first heat recovery chamber are connected to each other, and a second exhaust passage is formed on the other side of the first heat recovery chamber, and a first dust outlet is formed on the lower side thereof. The second heat recovery chamber formed on the ceiling and the second heat recovery chamber is mounted on the ceiling of the flow of combustion gas exiting through the first exhaust passage of the first heat recovery chamber A first baffle which is guided and formed inside of the heat transfer tube, and is installed to be inclined at an angle from the lower end of the first baffle toward the first heat recovery chamber to induce a flow rate of the combustion gas while reducing the flow rate of the internal heat transfer tube. The first flow guide wall and the second exhaust passage of the second heat recovery chamber and one side of the upper side are installed side by side, the third exhaust passage is formed on the opposite rear side and the second dust outlet is formed on the lower side and the wall is A third baffle chamber formed of a heat transfer pipe, a second baffle mounted on a ceiling of the third heat recovery chamber, and guiding a flow of combustion gas flowing out through a second exhaust passage of the second heat recovery chamber to a lower portion, and having an inside of the heat transfer pipe; It is installed to be inclined at a predetermined angle toward the second heat recovery chamber from the lower end of the second baffle to induce the flow rate to slow down while flowing the combustion gas The second flow guide wall formed inside of the heat transfer pipe and the first to third heat recovery chambers, the first and second baffles, the first and second flow guide walls of each of the first and second flow guide walls are connected to the steam by the circulation of the fluid Provided is a waste solid fuel boiler comprising a heat exchanger generated.

Accordingly, the present invention can prevent the dust contained in the combustion gas generated in the combustion process of the solid waste fuel to adhere to the inner wall of the furnace, improve the dust collection efficiency, the dust contained in the combustion gas to the heat pipe of the heat recovery chamber The amount of adhesion can be minimized, and the size of the boiler and the installation space are greatly reduced.

In a preferred embodiment of the present invention, the first and second flow guide walls may be installed to be inclined in a range of 25 to 35 degrees, respectively, based on the first and second baffles perpendicular to the ground.

In another embodiment of the present invention, the water pipe of the water cooling wall may be connected to circulate fluid with the heat exchanger.

The present invention having the above-described means and configuration of the problem is that the flame generated when the solid waste fuel is combusted in the combustion furnace causes the vortex by the vortex generator to reduce the loss of waste solid fuel and promote combustion efficiency, as well as By allowing the combustion gas to be exhausted quickly, it is possible to prevent the dust contained in the combustion gas from adhering to the inner wall of the combustion furnace and the water cooling wall.

In addition, the present invention improves the heat energy absorption efficiency through the respective heat pipes while the first and second baffles and the first and second flow-inducing walls obstruct and delay the rapid formation of flame and combustion gas flow rates. In this process, dust particles contained in the combustion gas are agglomerated in the form of agglomeration due to collisions with each other, and naturally fall to the first and second dust outlets and discharged, thereby greatly improving the dust collection efficiency and Minimization of dust adhering to the heat pipe.

In addition, in the present invention, since the secondary furnace is formed by the water cooling wall, most of the radiant heat is absorbed by the water pipe of the water cooling wall, so that it can be effectively utilized as a heat source of the heat exchanger and the efficiency thereof can be increased. Cooling is stable to block the adverse effects of high temperature flames on the furnace walls, which can prevent overheat damage of the furnace walls, and minimize clinker formation to minimize radiant heat loss and pollutant emissions.

Furthermore, in the present invention, since the combustion chamber and the heat recovery chamber are directly and compactly connected without a duct, the heat transfer area is reduced, thereby greatly reducing the size and installation area of the boiler.

1 is a front sectional view schematically showing the configuration of a boiler according to an embodiment of the present invention;
2 is a side cross-sectional view schematically showing the configuration of a boiler according to an embodiment of the present invention;
3 is a plan sectional view schematically showing the configuration of a boiler according to an embodiment of the present invention;
4 is a plan view schematically showing a vortex generating chamber in a boiler according to an embodiment of the present invention;
5 is a side cross-sectional view schematically showing a vortex generating chamber in a boiler according to an embodiment of the present invention;

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions in the present invention, which specifies that the concept should be construed as a concept consistent with the technical spirit of the present invention and commonly understood or commonly recognized in the art.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

Herein, the attached drawings are exaggerated or simplified in order to facilitate understanding and clarification of the structure and operation of the technology, and it is to be noted that each component does not exactly coincide with the actual size.

In the following description, the direction in which the combustion gas moves horizontally and horizontally with respect to the ground is defined in the horizontal direction, and the direction in which the combustion gas moves vertically and vertically with respect to the horizontal direction is vertical.

1 to 3, the waste solid fuel boiler according to the embodiment of the present invention is largely a combustion furnace 10, vortex generation chamber 20, water cooling wall 30, the first heat recovery chamber 40 ), The second heat recovery chamber 50, the first baffle 60, the first return flow guide wall 70, the third heat recovery room 80, the second baffle 90, the second return flow guide wall 100, and It is configured to include a heat exchanger (110).

The combustion furnace 10 is formed in a cylindrical shape so that the waste solid fuel is burned by the burner to generate high heat and flame.

Here, the mechanism and the configuration of the combustion furnace to ignite the waste solid fuel to the burner of the combustion furnace 10 by automatic ignition by the fuel sensor and the like is a known technique in the art to which the present invention belongs to a detailed description Is omitted.

The vortex generating chamber 20 is installed on the flame propagation path above the combustion furnace 10, and an air spray nozzle 21 for vortexing the flame rising from the combustion furnace 10 with high pressure air is provided on the inner circumferential surface thereof. A plurality of radially formed at regular intervals.

That is, the vortex generating chamber 20, as shown in Figure 4 and 5, while the high-pressure air injected from the plurality of air spray nozzles 21 disposed along the inner circumferential speed of the combustion furnace 10 while vortex rotation By supplying oxygen to the flame of the waste solid fuel ignited in the), smooth combustion and high heat generation are induced, and at the same time, the ignited flame is pushed upward by centrifugal rotational force by swirling flow to induce a complete combustion.

Here, the air injection nozzle 21 may be supplied with compressed air of a high pressure by a separate air supply means such as a compressor, and the inflow amount of air according to the amount and solidification time of the waste solid fuel injected into the combustion furnace 10. It may be provided with a control valve between the air supply means to adjust.

In addition, the air injection nozzle 21 may be arranged in a shape having a predetermined turning angle toward the center of the vortex generating chamber 20 so that air is supplied diffused while smoothly causing the vortex inside the combustion furnace.

The water-cooled wall 30 is arranged in the shape of a plurality of water pipes 31 in contact with the flame, and the fireproof material, the heat insulating material, etc. are arranged on the outside to minimize the heat dissipation loss is connected to the upper portion of the vortex generating chamber 20 It is installed.

As shown in FIG. 5, the water cooling wall 30 is connected to the heat exchanger 110 so that the cooling water circulates so that the water pipes 31 absorb most of the radiant heat and effectively use the water pipes 31. The cooling of the furnace wall can be stable to prevent damage due to overheating, and in particular, the formation of clinker can be reduced to minimize the loss of radiant heat and the emission of pollutants.

The first heat recovery chamber 40 is connected to the upper portion of the water cooling wall 30 so that the combustion gas and the flames are transferred by the fluid flowing into the heat-transfer tube of the wall, and the combustion gas passes through one side thereof. The first exhaust passage 41 is formed.

That is, the first heat recovery chamber 40 has a plurality of heat pipes connected at regular intervals between the upper and lower collecting pipes 113 connected to the steam drum 111 and the water drum 112 of the heat exchanger 100, respectively. The inner wall is formed, and the heat transfer tube is membrane welded to have liquid tightness, so that the heat conductivity of the combustion gas and flame is excellent, and heat deformation or damage does not occur at high temperature, thereby preventing combustion gas leakage and heat absorption. It is equipped to maximize.

The second heat recovery chamber 50 is connected to the first exhaust passage 41 and one side of the upper portion of the first heat recovery chamber 40, the other side of the second exhaust passage for passing the combustion gas ( 51) is formed, the bottom is formed narrower width gradually toward the bottom, the first dust outlet of the hopper shape narrower gradually toward the bottom in order to discharge the dust smoothly in the lower portion of the bottom 52 is formed, and the wall is formed as a heat transfer tube and is connected to the heat exchanger 110 so that heat transfer is performed by a fluid flowing into the heat transfer tube.

That is, like the first heat recovery chamber 40, the second heat recovery chamber 50 includes a plurality of upper and lower collecting pipes 113 connected to the steam drum 111 and the water drum 112 of the heat exchanger 100, respectively. The inner wall is formed in the shape that the heat pipes are connected at regular intervals, and the heat pipes are treated by membrane welding to have liquid tightness, so that the heat conductivity of the flue gas is excellent and heat deformation or damage does not occur at high temperatures. It is equipped to prevent leakage and maximize heat absorption.

The first baffle 60 is the first dust outlet 52 in the ceiling of the second heat recovery chamber 50 to guide the flow of the combustion gas coming through the first exhaust passage 41 of the first heat recovery chamber 40 to the bottom. It is mounted in the form of a long hanging toward the inside, and the inside is formed as a heat transfer tube is connected to the heat exchanger 110 is configured to perform heat transfer by the fluid flowing into the heat transfer tube.

That is, the first baffle 60 is formed between the upper and lower collecting pipes 113 connected to the steam drums 111 and the water drums 112 of the heat exchanger 100, respectively. The heat transfer tube is membrane welded to have liquid tightness, so that the thermal conductivity of the combustion gas is excellent, and heat deformation or damage does not occur at high temperatures, thereby preventing leakage of the combustion gas and maximizing heat absorption. It is equipped to be.

The first flow recovery wall 70 is a first heat recovery chamber 40 at the lower end of the first baffle 60 to guide the combustion gas in the second heat recovery chamber 50 to slow the flow rate of about 1/3. It is formed integrally connected with the first baffle 60 in a form inclined at a predetermined angle toward the inside, and the inside is formed as a heat pipe to be connected to the heat exchanger 110 so that heat is transferred by the fluid flowing into the heat pipe. Consists of.

That is, the inner wall of the heat transfer tube of the first flow guide wall 70 is formed integrally connected with the heat transfer tube of the first baffle 60, and the heat transfer tube is treated by membrane welding to achieve liquid tightness, and thus combustion gas. It has excellent thermal conductivity and does not cause heat deformation or damage at high temperature, preventing leakage of combustion gas and maximizing heat absorption.

Here, the first flow guide wall 70 is preferably inclined in the range of 25 to 35 degrees toward the first heat recovery chamber 40 with respect to the vertical axis at the lower end of the first baffle 60 perpendicular to the ground. Do.

The amount of dust collected by the first baffle 60 and the first flow guide wall 70 and discharged through the first dust outlet 52 occupies about 40 to 50% of the total dust generation amount.

In the third heat recovery chamber 80, one side of the upper side of the second exhaust passage 51 of the second heat recovery chamber 50 is connected in parallel with each other, and the combustion gas moves to the heat exchanger 110 on the opposite rear surface. The third exhaust passage 81 is formed so that the bottom is gradually narrower in width toward the bottom, and the hopper is narrower in width toward the bottom in order to smoothly discharge dust at the lower portion of the bottom of the bottom. A second dust discharge port 82 having a shape is formed, and the wall is formed as a heat transfer tube and is connected to the heat exchanger 110 so that heat is transferred by a fluid flowing into the heat transfer tube.

That is, the third heat recovery chamber 80, like the second heat recovery chamber 50, is disposed between the upper and lower collecting pipes 113 connected to the steam drum 111 and the water drum 112 of the heat exchanger 100, respectively. The inner wall is formed in the shape that the heat pipes are connected at regular intervals, and the heat pipes are treated by membrane welding to have liquid tightness, so that the heat conductivity of the flue gas is excellent and heat deformation or damage does not occur at high temperatures. It is equipped to prevent leakage and maximize heat absorption.

The second baffle 90 is directed from the ceiling of the third heat recovery chamber 80 toward the second dust outlet so as to guide the flow of the combustion gas flowing through the second exhaust passage 51 of the second heat recovery chamber 50 downward. It is mounted in a long hanging shape, and the inside is formed as a heat transfer tube and is connected to the heat exchanger 110 so that heat is transferred by a fluid flowing into the heat transfer tube.

That is, the second baffle 90 has a plurality of heat transfer pipes between the upper and lower collecting pipes 113 connected to the steam drum 111 and the water drum 112 of the heat exchanger 100, similarly to the first baffle 60. The inner wall is formed to be connected at regular intervals, and the heat transfer tube is treated by membrane welding to have liquid tightness, so that the thermal conductivity of the combustion gas is excellent and heat deformation or damage does not occur at high temperatures, thereby preventing leakage of the combustion gas. It is equipped to maximize the prevention and heat absorption.

The second return flow guide wall 100 rotates the combustion gas in the third heat recovery chamber 80 at a predetermined angle from the lower end of the second baffle 90 toward the second heat recovery chamber 50 so as to induce the flow rate to be slow. It is formed to be integrally connected to the lower end of the second baffle 90 to be inclined, and the inside is formed as a heat transfer tube and is connected to the heat exchanger 110 so that heat is transferred by the fluid flowing into the heat transfer tube.

That is, the inner wall of the heat transfer tube of the second flow guide wall 100 is formed integrally connected with the heat transfer tube of the second baffle 90, and the heat transfer tube is treated by membrane welding to achieve liquid tightness, and thus combustion gas. It has excellent thermal conductivity and does not cause heat deformation or damage at high temperature, preventing leakage of combustion gas and maximizing heat absorption.

Here, the second flow guide wall 100 is preferably inclined in the range of 25 to 35 degrees toward the first heat recovery chamber 40 with respect to the vertical axis at the lower end of the second baffle 90 perpendicular to the ground. Do.

The amount of dust collected by the second baffle 90 and the second return flow guide wall 100 and discharged through the second dust discharge port 82 occupies about 20 to 30% of the total dust generation amount.

The heat exchanger 110 may include first to third heat recovery chambers 40, 50 and 80, first and second baffles 60 and 90 to generate steam by circulating and heat-exchanging fluid. The first and second return flow guide wall (70, 100) of each of the heat transfer pipe and the collecting pipe 113 is connected, and at the same time combustion coming out of the third exhaust passage 81 of the third heat recovery chamber (80) It is formed to pass through the gas is provided so that the heat exchange between the heat source, that is, the flame and hot combustion gas generated from the combustion of the waste solid fuel and the water supplied from the outside.

The upper part of the heat exchanger 110 is provided with a steam drum 111 for generating and temporarily storing high-temperature, high-pressure steam, and the lower part is provided with a water drum 112 for supplying condensed water or water. The drum 111 and the water drum 112 are connected to each other through a plurality of heat transfer tubes.

Here, the heat transfer pipe of the heat exchanger 110 is the water supplied in the steam drum 111 is passed through the water drum 112 and then directly receives the heat by the combustion gas is converted to high-temperature steam steam drum 111 It is guided to circulate to the top in the).

Therefore, the water stored in the water drum 112 is phase-converted to steam by heat-exchanging with a high temperature heat source that is supplied to the inside of the heat exchanger 110 while passing through the plurality of heat pipes to the steam drum 111 to be steam steam. Stored in the 111, the steam stored in the steam drum 111 in this way is supplied to the customer through the steam outlet 115 for heating and the like.

That is, the first to third heat recovery chamber 40, 50, 80, the first and second baffles 60, 90 and the first and second flow guide wall 70, 100 is in contact with the supply Since the heat source maintains a high temperature of about 1000 ° C., the water rising along the inside of each heat pipe is instantaneously saturated by the hot heat source, so that the saturated water in the water drum 112 is again steam steamed through the heat pipe. In the process of rising to 111, the heat exchange with the high temperature combustion gas is repeated and stored in the steam drum 111 in a steam state, and thus the combustion gas which has completed heat exchange with water is discharged through the exhaust port 117.

At this time, the rise of the water through the heat transfer pipe may be made naturally by supplying water at a high pressure inside the steam drum 111 using, for example, a supply pump (not shown), but may be implemented in other ways similar thereto. Of course.

The waste solid fuel boiler according to the embodiment of the present invention configured as described above receives external air from the air spray nozzle 21 in the vortex generating chamber 20 and causes high pressure injection to the upper portion of the combustion furnace 10 to cause vortex. The waste solid fuel is more easily melted and vaporized, and the combustion and the combustion gas can be more efficiently mixed with air and combustion gas.

In addition, most of the radiant heat due to the flame is absorbed by the water pipes 31 of the water cooling wall 30 can be effectively used as a heat source of the heat exchanger 110, which doubles the efficiency due to heating, and further cooling of the furnace wall It is stable and can greatly reduce damage and clinker formation due to overheating.

In addition, a heat source such as a flame generated from the combustion furnace 10 and a high temperature combustion gas passes through the first to third heat recovery chambers 40, 50, 80 and the heat exchanger 110, respectively. Heat exchange is performed, and the dust contained therein moves together between the bottoms of the first and second flow guide walls 70 and 100 and the second and third heat recovery chambers 50 and 80 in the form of agglomerates. Dropped to be discharged to the outside through the first and second dust outlet 52, 82, the dust is adhered to the first to third heat recovery chamber 40, 50, 80 and the heat exchanger 110 To avoid the need to clean the boiler frequently and to reduce maintenance costs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: combustion furnace 20: vortex generating chamber
21: air spray nozzle 30: water cooling wall
40: first heat recovery room 41: first exhaust passage
50: second heat recovery room 51: second exhaust passage
52: first dust outlet 60: first baffle
70: first flow guide wall 80: third heat recovery room
81: third exhaust passage 82: second dust outlet
90: second baffle 100: second flow guide wall
110: heat exchanger 111: steam drum
112: water drum 113: water pipe
117: exhaust port

Claims (3)

A combustion furnace 10 in which waste solid fuel is burned by a burner;
A vortex generating chamber 20 connected to the flame propagation path above the combustion furnace 10 and having a plurality of air spray nozzles 21 vortexing the flame on the inner circumferential surface thereof;
A water cooling wall 30 connected to the upper portion of the vortex generating chamber 20;
A first heat recovery chamber 40 connected to an upper portion of the water cooling wall 30 and having a first exhaust passage 41 formed on one side thereof, and having a wall formed of a heat transfer tube;
One side of the first exhaust passage 41 and the upper portion of the first heat recovery chamber 40 is connected and installed, and a second exhaust passage 51 is formed on the other side of the first heat recovery chamber 40, and a first dust outlet 52 is disposed below. A second heat recovery chamber 50 having a wall formed of a heat transfer tube;
A first baffle mounted on the ceiling of the second heat recovery chamber 50 to guide the flow of the combustion gas exiting from the first exhaust passage 41 of the first heat recovery chamber 40 to a lower portion thereof, 60);
The first flow induction wall is formed to be inclined at an angle from the lower end of the first baffle (60) toward the first heat recovery chamber (40) to induce the flow rate to slow down while flowing the combustion gas (inside of the first baffle). 70);
The second exhaust passage 51 and the one side of the upper side of the second heat recovery chamber 50 is installed side by side and the third exhaust passage 81 is formed on the opposite rear side and the second dust outlet 82 in the lower portion A third heat recovery chamber 80 in which a wall is formed of a heat transfer tube;
A second baffle mounted on the ceiling of the third heat recovery chamber 80 to guide the flow of the combustion gas passing through the second exhaust passage 51 of the second heat recovery chamber 50 to the lower side and having an inside of the heat transfer tube; 90);
The second flow guide wall is formed to be inclined at an angle from the lower end of the second baffle 90 to the second heat recovery chamber 50 at a predetermined angle to induce the flow rate to slow down while flowing the combustion gas. 100); And
Each of the first to third heat recovery chambers 40, 50, 80, the first and second baffles 60, 90, and the first and second flow guide walls 70, 100, respectively. Heat exchanger connected to the heat transfer pipe and the combustion gas passing through the third exhaust passage 81 of the third heat recovery chamber 80 passes through and is exhausted to the exhaust port 117 and is formed as a heat transfer tube to circulate the fluid to generate steam. Group 110;
Waste solid fuel boiler comprising a.
The method of claim 1,
The first and second flow guide walls (70, 100) are waste, characterized in that installed inclined in the range of 25 to 35 degrees respectively based on the first and second baffles (60) (90) perpendicular to the ground Solid fuel boilers.
3. The method according to claim 1 or 2,
The water pipe of the water cooling wall 30 is connected to the heat exchanger 110 and the fluid is circulated fluid waste boiler, characterized in that to perform a cooling function.

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