JP2016166723A - Compound steam boiler employing chain stoker fore grate for solid fuel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound steam boiler employing a chain stoker fire grate for solid fuel capable of minimizing imperfect combustion and maximizing heat transfer effects.SOLUTION: At an upper part of a combustion chamber 17 in which a solid fuel is combusted, an upper steam drum 1 is disposed which incorporates a number of smoke pipes 6 each for transferring a combustion gas. At both right and left ends of a lower part of the combustion chamber 17, lower water drums 2 are disposed and a fixed interval therebetween is kept via a fin member for keeping air-tightness within the combustion chamber and increasing a heat transfer area. The compound steam boiler also comprises a number of vertical curved pipes 3 keeping a vertical state in a direction from the lower water drums 2 to the upper steam drum 1, and a chain stoker fire grate 12 which is disposed in lower parts of the lower water drums 2 and forms a bottom of the combustion chamber 17. A number of vertical curved pipes 3 are formed from a plurality of vertical curved pipe groups that are connected to the upper steam drum 1 in such a manner that paths become different, and a passage 15 for a combustion gas flow is provided between the different paths.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a composite steam boiler using a chain stoker grate for solid fuel, and more specifically, high temperature steam required in the production process of an industrial body is converted into wood pellets, wood chips, palm coconut shells (PKS). Or a combined steam boiler using a chain stoker grate for solid fuel to automatically burn and provide solid fuel such as coal.

  Steam boilers that use solid fuel, which is cheaper than oil, gas, and electricity, are sold. Especially, among solid fuels, steam boilers that use pellets are short because the development period is short and the technical level is low. The problem is occurring. Specifically, in the case of an existing pellet steam boiler, a steam boiler production company mainly engaged in oil and gas boilers purchases the main body of the oil and gas boiler, and uses a pellet combustion device instead of the oil and gas burner. Most of them are installed and sold on the market as steam boilers. In this case, many problems occur in the combustion apparatus, and the operation of the steam boiler is interrupted several times.

  Solid fuels, unlike oil, gas, and electricity, always generate by-products after combustion, that is, ash, and if the generated ash is not completely processed, it is continuously renewed. In a process where fresh fuel is put into the combustor, ash is discharged and new fuel must be burned continuously, the ash is not completely discharged, and the ash that has not been discharged is newly charged Incomplete combustion or fire extinguishing situations occur that interfere with fuel combustion.

  As another problem, since combustion is performed at the same position of the combustion apparatus, problems such as the combustion apparatus being deformed by being exposed to high temperature and being unable to perform its function frequently occur.

  In addition, it is limited to specific fuels. Among limited fuels, fuel burns and high grade fuel is required due to problems such as clinker. There are restrictions on the free use of pellets of different quality, and it is a structure that cannot burn different types of solid fuels (eg palm coconut shells, wood chips, etc.) with different ignition points and different burning properties Therefore, when there are many restrictions on the fuel and a problem of supply and demand such as the price of a specific fuel occurs, it becomes impossible to use the installed facility at a great expense.

  On the other hand, conventionally, a moving grade method, a burner method, and a screw method have been adopted as a fuel supply method for a steam boiler.

  In the moving grade method, the plates that reciprocate back and forth are superimposed in a staircase pattern, and when each plate moves back and forth within a certain range, the fuel on the top is pushed out and falls down to the lower staircase little by little It is. The conventional moving grade method has the following problems.

  -The entanglement phenomenon occurs when the quality of the fuel is bad, and if it is pushed out without being burned due to the entanglement, it must fall as ash as it goes to the bottom of the stepped plate, but the fuel If it starts to fall in a state where it is not sufficiently burned, and new fuel continues to enter, incompletely burned fuel is produced over the incompletely burned fuel, and in severe cases, there is a problem that the fire extinguishes.

  -Each grilled plate that moves back and forth in a stepwise manner is continuously exposed to high temperatures, and during the time it is burned, it is continuously heated by a high temperature fire, and the grilled plate is deformed. A problem that cannot be performed and cannot function.

  Compared to the above moving grade method, the burner method blows air into the burner like oil and gas burners, and burns while rotating the burner while turning the burned fuel like remicons. It is a method. On the other hand, the conventional burner method has the following problems.

  -Solid fuel has a structure in which ash is always generated after combustion, but there is no apparatus for treating ash, and ash is ejected by oxygen supplied for combustion. However, ash is not 100% combusted and put out like flour, but because a lot of fuel is burned in a short time, the combustion rate can only be lowered, and if the combustion rate is low, a part of the fuel is Only unburned ash is generated. Therefore, if the ash accumulates without being blown into the wind, and the ash accumulates without being discharged, the incomplete combustion of the injected fuel is further accelerated, and the larger ash (that is, the unburned portion is A lot of ash) is piled up, and the situation where the fire goes out frequently occurs. As a result, the efficiency is unstable and the efficiency is reduced.

  The screw system, which is another conventional system, is a system in which a large number of screws are provided in the combustion chamber in the combustion progress direction, that is, in the vertical direction in accordance with the capacity of the boiler, and the fuel being burned is pushed out. This screw system is provided with a structure in which water is circulated by forming water pockets inside the screw so that the screw is exposed to the fuel and flame being burned and can withstand high heat. However, deformation of the screw occurs due to high heat, which makes it impossible for the screw to rotate, and fuel is not transferred, resulting in incomplete combustion, and eventually the fire goes out. In this case, the operation of the boiler must be interrupted and the screw must be replaced, and this happens frequently in a cycle of 3 to 4 weeks, which not only incurs tremendous costs, but also in the production process. Problems that cause loss occur.

  One object of the present invention is to not only cause problems of the combustion apparatus by installing a pellet combustion apparatus instead of oil and gas burner but also to produce a steam boiler, and to minimize incomplete combustion of combustion gas. Therefore, it is an object of the present invention to provide a combined steam boiler using a chain stoker grate for solid fuel, which can maximize the heat transfer effect.

  Another object of the present invention is to provide a combined steam boiler using a chain stoker grate for solid fuel that does not suffer from incomplete combustion and fire extinguishing problems due to incomplete ash treatment. .

  Another object of the present invention is to prevent the solid fuel from being deformed by being continuously exposed to high temperatures at the same location because the solid fuel is burned at the same location of the combustion device. It is an object of the present invention to provide a combined steam boiler using a chain stoker grate for solid fuel.

  Another object of the present invention is to freely use pellets having different qualities, and to burn different kinds of solid fuels (for example, palm coconut shells, wood chips, etc.) having different ignition points and different burning properties. It is an object of the present invention to provide a combined steam boiler using a chain stoker grate for solid fuel with a structure capable of being used.

  Still another object of the present invention is to provide a combined steam boiler using a chain stoker grate for solid fuel, which does not have the problems in the above moving grade method, burner method, and screw method as a fuel supply method for the steam boiler. It is something to try.

In order to achieve the object of the present invention as described above,
1. A combustion chamber in which solid fuel burns,
An upper steam drum disposed at an upper portion of the combustion chamber, the upper steam drum including a plurality of smoke pipes disposed horizontally within the upper steam drum to transmit the combustion gas of the combustion chamber; A number of smoke pipes each have an upper steam drum, with which the combustion chamber communicates at one end thereof.
Lower water drums disposed at the lower left and right ends of the combustion chamber;
A plurality of vertical curved tubes configured to be able to transmit water of the lower water drum to the upper steam drum in a state of being spaced apart at a predetermined interval, the plurality of vertical curved tubes being configured to maintain airtightness in the combustion chamber and The multiple verticals that maintain a constant distance from each other through the fin members for increasing the heat transfer area, while maintaining at least a constant section in a direction from the lower water drum to the upper steam drum. A curved tube, and a seating portion that is rotated by a drive motor, and the seating portion is configured to burn while moving while the injected solid fuel is seated; A chain stoker grate disposed at the bottom of the lower water drum and constituting the bottom of the combustion chamber,
The plurality of vertical curved pipes include a plurality of vertical curved pipe groups, and the plurality of vertical curved pipe groups are connected to the upper steam drum in different paths, thereby burning during the different paths. A combined steam boiler using a chain stoker grate for solid fuel is provided, characterized by opening a passage for gas flow.

  2. The composite steam boiler using the chain stoker grate for solid fuel as described in 1 above, wherein the fin member is a steel plate.

  3. The combustion gas flow passes through a first path from a lower portion of the combustion chamber to a lower vertical curved tube group in the plurality of vertical curved tube groups, and a lower vertical curved tube group in the plurality of vertical curved tube groups. A third pass from the bottom to the combustion gas flow passage and a third pass from the combustion gas flow passage to the multiple smoke pipes in the upper steam drum. A combined steam boiler using the chain stoker grate for solid fuel described in 1 above is provided.

  4). The apparatus further comprises a fuel injection device for introducing the solid fuel into the combustion chamber, and the injected solid fuel is disposed on the chain stalker grate and burns, such as preheating, drying, combustion, and loss on ignition. The composite steam boiler using the chain stoker grate for solid fuel according to the above 1 is provided, which has a flow path that is finally converted into ash through a process.

  5. In order to clean the scattered ash adhering to the multiple smoke pipes of the upper steam drum, the multiple smoke pipes are disposed in front of the multiple smoke pipes in correspondence with each of the multiple smoke pipes. The chain stoker grate for solid fuel according to any one of the above 1 to 4, further comprising a smoke tube cleaning device having a number of high-pressure air nozzles that inject into the interior of the smoke tube at high speed. A combined steam boiler is provided.

  6). A plurality of air chambers and a handle for adjusting the required amount of air in each of the plurality of air chambers for injecting the regulated air required for the solid fuel below the chain stoker grate A combined steam boiler using the chain stoker grate for solid fuel according to any one of the above 1 to 4, further comprising an air conditioning damper of the type.

7). A box for collecting ash falling at the bottom of the chain stoker grate, and a number of sliding systems for discharging the ash collected in the box for collecting the ash out of the steam boiler An ash treatment pusher,
When the ash falls into the gaps in the chain stoker grate, it falls into the multiple air chambers,
Both side surfaces of the air chamber are inclined so that the falling ash collects on one side,
The ash treatment pusher closes a hole for discharging ash to the outside, but if the ash treatment pusher is moved back and forth, the hole is configured to open and close, and while moving back and forth, The combined steam boiler using the chain stoker grate for solid fuel according to the above 6, characterized in that it is configured to push ash into the hole.

  8). The chain stoker grate has an arch-shaped refractory, and further includes a heat radiating unit for assisting combustion of solid fuel, and the heat radiating unit induces combustion gas in the combustion chamber to 5. The structure according to claim 1, wherein the combustion chamber is configured to have a certain size and shape so as to raise a combustion temperature in the combustion chamber and guide ash generated after combustion to an ash treatment facility. A combined steam boiler using a chain stoker grate for solid fuel is provided.

  9. 9. The combined type using the chain stoker grate for solid fuel according to claim 8, further comprising one or more partition walls for increasing the residence time and heat transfer effect of the combustion gas in the combustion chamber. A steam boiler is provided.

  10. The fuel injection device inputs the solid fuel while forming a fan-shaped trajectory configured so that a fuel layer having a certain thickness is uniformly formed on the chain stoker grate inside the combined steam boiler. The composite steam boiler using the chain stoker grate for solid fuel as described in 4 above is provided.

11. A combustion chamber in which solid fuel burns,
An upper steam drum disposed at an upper portion of the combustion chamber, the upper steam drum including a plurality of smoke pipes disposed horizontally within the upper steam drum to transmit the combustion gas of the combustion chamber; A number of smoke pipes each have an upper steam drum, with which the combustion chamber communicates at one end thereof.
Lower water drums disposed at the lower left and right ends of the combustion chamber;
A plurality of vertical curved tubes configured to be able to transmit water of the lower water drum to the upper steam drum in a state of being spaced apart at a constant interval, wherein the plurality of vertical curved tubes are configured to maintain airtightness in the combustion chamber and The plurality of verticals, wherein at least certain sections maintain a vertical state from the lower water drum to the upper steam drum while maintaining a constant distance from each other via fin members for increasing the heat transfer area A curved tube, and a seating portion that is rotated by a drive motor, and the seating portion is configured to burn while moving while the injected solid fuel is seated; A chain stoker grate disposed at the bottom of the lower water drum and constituting the bottom of the combustion chamber,
The plurality of vertical curved tubes are connected to the upper steam drum in different paths, thereby opening a passage of combustion gas flow between the different paths,
The combustion gas flow passes through a first path from a lower portion of the combustion chamber to a lower vertical curved tube group in the plurality of vertical curved tube groups, and a lower vertical curved tube group in the plurality of vertical curved tube groups. A third pass from the bottom to the combustion gas flow passage and a third pass from the combustion gas flow passage to the multiple smoke pipes in the upper steam drum. A combined steam boiler using a chain stoker grate for solid fuel is provided.

12 A combustion chamber in which solid fuel burns,
An upper steam drum disposed at an upper portion of the combustion chamber, the upper steam drum including a plurality of smoke pipes disposed horizontally within the upper steam drum to transmit the combustion gas of the combustion chamber; Each of the plurality of smoke pipes has the upper steam drum, with which the combustion gas communicates at one end thereof,
Lower water drums disposed at the lower left and right ends of the combustion chamber;
A plurality of vertical curved tubes configured to be able to transmit water of the lower water drum to the upper steam drum in a vertically separated state while maintaining horizontal at a constant interval, In addition, at least a certain section is perpendicular to the direction of the upper steam drum from the lower water drum while maintaining a certain distance from each other via fin members for maintaining airtightness in the combustion chamber and increasing a heat transfer area. A plurality of vertical curvilinear tubes that hold fuel and a seating portion that is rotated by a drive motor, and the seating portion is configured to burn while the injected solid fuel moves while seated. The seating portion includes a chain stoker grate disposed at a lower portion of the lower water drum and constituting a bottom portion of the combustion chamber;
The plurality of vertical curved pipes include a plurality of vertical curved pipe groups, and the plurality of vertical curved pipe groups are connected to the upper steam drum in different paths, thereby burning during the different paths. Open a gas flow passage,
A box for collecting ash falling at the bottom of the chain stoker grate, and a number of sliding systems for discharging the ash collected in the box for collecting the ash out of the steam boiler An ash treatment pusher,
When the ash falls into the gaps in the chain stoker grate, it falls into a number of air chambers arranged below the chain stoker grate to inject the air required for the solid fuel,
Both side surfaces of the air chamber are inclined so that the falling ash collects on one side,
The ash treatment pusher closes a hole for discharging ash to the outside, but if the ash treatment pusher is moved back and forth, the hole is configured to open and close, and while moving back and forth, Provided is a combined steam boiler using a chain stoker grate for solid fuel, characterized in that it serves to push ash into the hole.

13. A combustion chamber in which solid fuel burns,
An upper steam drum disposed at an upper portion of the combustion chamber, the upper steam drum including a plurality of smoke pipes disposed horizontally within the upper steam drum to transmit the combustion gas of the combustion chamber; Each of the plurality of smoke pipes has the upper steam drum, with which the combustion gas communicates at one end thereof,
Lower water drums disposed at the lower left and right ends of the combustion chamber;
A plurality of vertical curved tubes configured to be able to transmit water of the lower water drum to the upper steam drum in a state of being spaced apart at a constant interval, wherein the plurality of vertical curved tubes are configured to maintain airtightness in the combustion chamber and The plurality of verticals, wherein at least certain sections maintain a vertical state from the lower water drum to the upper steam drum while maintaining a constant distance from each other via fin members for increasing the heat transfer area A curved tube, and a seating portion that is rotated by a drive motor, and the seating portion is configured to burn while moving while the injected solid fuel is seated; A chain stoker grate disposed at the bottom of the lower water drum and constituting the bottom of the combustion chamber,
The chain stoker grate has an arch-shaped refractory, and further includes a heat radiating unit for assisting combustion of solid fuel, and the heat radiating unit induces combustion gas in the combustion chamber to A combined type using a chain stoker grate for solid fuel, characterized in that it is configured in a certain size and form to raise the combustion temperature in the combustion chamber and guide the ash generated after combustion to the ash treatment facility A steam boiler is provided.

  According to the present invention, not only the chain stalker system is adopted, but also the combustion gas flow can be made in three passes, so that a pellet combustion device is attached instead of oil and gas burner. Not only does the problem of the combustion apparatus due to the production of the steam boiler basically occur, but also the incomplete combustion of the combustion gas in the combustion chamber can be minimized and the heat transfer effect can be maximized.

  In addition, according to the present invention, since the ash treatment part is a natural fall method while rotating, there is no problem in ash treatment, and since the fuel is low, there is no problem even if there is a good entanglement (clinker phenomenon). Therefore, it is possible to prevent incomplete combustion and fire extinguishing caused by incomplete ash treatment.

  Moreover, according to this invention, the problem of the combustion apparatus of the steam boiler which attached the combustion apparatus with which the combustion part was fixed does not generate | occur | produce. Specifically, according to the present invention, since the high temperature is not always stopped in one place but is a rotating grate, the portion exposed to the high temperature is a continuously changing method. The problem due to deformation of the grate) can be prevented.

  In addition, according to the present invention, a chain stoker grate is used and a structure capable of three-pass combustion gas flow enables pellets with different qualities to be used freely, with different ignition points and burning properties. It is possible to burn different dissimilar solid fuels (eg, palm coconut shells, wood chips, etc.).

  In addition, according to the present invention, by supplying solid fuel onto the chain stoker grate, there is no problem of the conventional fuel supply system, moving grade method, burner method, screw method, and the provision of a composite steam boiler Is possible.

  Moreover, according to the present invention, since the air conditioning damper is provided, combustion in the combustion chamber can be performed smoothly.

  Moreover, according to this invention, since many ash treatment pushers are provided, the ash which falls to the lower part of a chain stoker grate can be processed smoothly.

FIG. 1 is a front view of a combined steam boiler using a solid fuel chain stoker according to the present invention. FIG. 2 is a right side view of a combined steam boiler using the solid fuel chain stoker according to the present invention. FIG. 3 shows a plurality of vertical curved pipes having a water drum, a steam drum, and a plurality of vertical curved pipe groups connecting the water drum and the steam drum constituting a combined steam boiler using a solid fuel chain stoker according to the present invention. The figure which shows a structure. FIG. 4 is a view showing the vertical curved pipes shown in FIG. 3 and fin members (steel plates) connecting them. FIG. 5 is a plan view of a smoke tube cleaning device including high-pressure air nozzles corresponding to a large number of smoke tubes arranged in the steam drum shown in FIG. 2. FIG. 6 is a photograph of the actual production of the smoke tube cleaning device shown in FIG. FIG. 7A shows the ash treatment pusher closed when the ash treatment pusher lever is in its original position. FIG. 7B is a diagram showing the opening of the ash processing pusher when the lever of the ash processing pusher is pulled.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a combined steam boiler using a solid fuel chain stalker according to the present invention, and FIG. 2 is a right side view of the combined steam boiler using a solid fuel chain stalker according to the present invention.

  1 and 2, the combined steam boiler using the solid fuel chain stoker according to the present invention basically has a combustion chamber 17, an upper steam drum 1, a lower water drum 2, and a number of vertical curved tubes. 3 and a chain stoker grate 12.

  Specifically, in the combustion chamber 17, solid fuel such as wood pellets, wood chips, palm coconut shells, and coal is burned.

  An upper steam drum 1 is disposed at the upper part of the combustion chamber 17. The upper steam drum 1 includes a plurality of smoke pipes 6 that are horizontally disposed inside the upper steam drum 1 and transmit the combustion gas of the combustion chamber 17. Each of the plurality of smoke pipes 6 has a combustion chamber at one end thereof. Communicated.

The lower water drum 2 is disposed at the lower left and right ends of the combustion chamber 17.
Preferably, the upper steam drum 1 provided in the upper part is provided as a horizontal cylindrical drum, and the lower water drum 2 provided in the lower part is configured as a smaller horizontal cylinder.

  The plurality of vertical curved tubes 3 are configured to be able to transmit water from the lower water drum 2 to the upper steam drum 1 in a state of being spaced apart at a constant interval. As shown in FIG. 3, the plurality of vertical curved tubes 3 are spaced apart from each other through fin members 4, which are preferably steel plates, for maintaining airtightness in the combustion chamber and increasing the heat transfer area. While being held, at least a certain section is kept perpendicular to the direction from the lower water drum 2 to the upper steam drum 1.

  On the other hand, as shown in FIGS. 3 and 4, the fin member 4, which is a steel plate, is preferably disposed between the vertical curved pipes (water pipes) and the vertical curved pipes (water pipes) of the many vertical curved pipes 3. The welded water pipe and the water pipe are connected to one, the heat transfer area of the circular water pipe is maximized, and the space between the water pipe and the water pipe is sealed with the fin member 4 to the outside. The loss of heat energy dissipated is prevented, and the heat energy generated in the combustion chamber is efficiently absorbed by the boiler water.

  The chain stoker grate 12 has a seating portion that is rotated by a drive motor, and the seating portion is configured to burn while moving while the injected solid fuel is seated. The bottom part of the combustion chamber 17 is configured by being disposed at the lower part of the lower water drum 2.

  A high speed blower (not shown) for supplying external air to increase the combustion efficiency of the combustion chamber 17 on the upper part of the chain stoker grate 12, and a round arch-shaped heat radiation portion 5 for increasing the heat radiation efficiency of the combustion chamber 17 The combustion rate and radiation rate of the solid fuel can be increased.

  Below the chain stoker grate 12, as shown in FIGS. 1 and 2, in order to inject the regulated air required for the solid fuel, a number of air chambers 9 and a number of air chambers respectively A handle type air conditioning damper 10 may be included to adjust the amount of air required.

  In addition, a box for collecting ash falling on the lower part of the chain stoker grate 12 and a large number of sliding methods for discharging the ash collected in the box for collecting ash out of the steam boiler. The ash treatment pusher 11 can be included.

  As shown in FIG. 2, the burned ash falls into a number of air chambers 9 when falling into the gaps of the chain stoker grate 12, so that the ash falling on both sides of the air chamber 9 gathers on one side. It is configured to be inclined.

  As shown in FIGS. 7A to 7B, the ash treatment pusher 11 closes the hole for discharging the ash to the outside. However, if the ash treatment pusher 11 is moved back and forth by the operation of the lever of the ash treatment pusher, the hole is formed. It is configured to open and close, and is configured to push ash into the hole while moving back and forth.

  As shown in FIGS. 1 and 2, the combined steam boiler using the chain stoker grate for solid fuel according to the present invention comprises an arch-like refractory at the top of the chain stoker grate 12, The heat radiation part 5 for assisting combustion can be included. The heat radiating unit 5 induces the combustion gas in the combustion chamber 17 below the heat radiating unit 5 to raise the combustion temperature in the combustion chamber 17, and the residence time of the combustion gas is the length of the heat radiating unit 5. Since it becomes longer, the plurality of vertical curve tube groups A and B, the combustion gas flow passage 15 and the many smoke pipes 6 work to prevent incomplete combustion and increase the heat transfer effect. It is configured in a certain size and form to guide to the processing facility.

  As shown in FIG. 1, the combined steam boiler using the chain stoker grate for solid fuel according to the present invention is configured such that the upper part is sealed and the lower part is opened, and the flow of the combustion gas in the combustion chamber is controlled. A partition wall 16 may be included to partially limit and further increase the residence time and heat transfer effect. Although one partition is illustrated in FIG. 1, an additional partition may be included in the combustion chamber in consideration of the residence time of the combustion gas and the heat transfer effect.

  In addition, the composite steam boiler using the chain stoker grate for solid fuel according to the present invention has a fan shape in which a fuel layer having a certain thickness is uniformly formed on the chain stoker grate 12 inside. The fuel injection device 14 inputs the solid fuel while forming the trajectory.

  1 and 2, a reference numeral 19 is a manhole for cleaning and managing the smoke pipe, and a reference numeral 20 is for discharging the water in the steam drum 1 and the water drum 2 to the water on the bottom surface by gravity. The drain of.

  On the other hand, as shown in FIG. 3, the plurality of vertical curved tube 3 includes a plurality of vertical curved tube groups A and B, and the plurality of vertical curved tube groups A and B have different paths so that the upper steam drum By connecting to 1, the passage of the combustion gas flow is opened between the different paths.

  In the above description, a plurality of vertical curved tube groups are illustrated as an upper vertical curved tube group A and a lower vertical curved tube group B, but the present invention is not necessarily limited thereto and does not depart from the spirit of the present invention. Additional vertical curve tube groups can be added within the range.

  The composite steam boiler using the chain stoker grate for solid fuel according to the present invention described above applies the chain stalker grate 12 as a combustion part, and the boiler equipment provided on the combustion part of the chain stoker grate 12 is: One steam drum 1 is provided in the upper center and one water drum 2 is provided in each of the left and right sides of the lower part (a plurality of steam drums 1 can be provided depending on the capacity). A number of vertical curved pipes 3 are connected to the water drum 2 so as to circulate the number of water of the boys, and the upper steam drum 1 is provided with a group of smoke pipes 6 horizontally to produce a boiler function. It has been made. Therefore, the combustion gas (hot gas), which is the thermal energy generated while the solid fuel burns, passes through the many vertical curve tubes 3 and transmits the heat energy to the boiler water inside the many vertical curve tubes 3. Then, the heat energy is transferred again to the boiler water while passing through many smoke pipes 6 provided horizontally in the upper steam drum 1, thereby heating the water in the many vertical curve pipes 3 and the upper steam drum 1. Then, the steam is changed to steam, and the steam is supplied to the outside through a steam supply unit (not shown).

  Preferably, the above-described combustion gas flow of the combined steam boiler using the chain stoker grate for solid fuel according to the present invention flows from the lower portion of the combustion chamber 17 to the lower vertical curved tube group B in the plurality of vertical curved tube groups. 1st path to the bottom, a second path from below the lower vertical curve tube group B in the plurality of vertical curve tube groups to the combustion gas flow passage 15, and from the combustion gas flow passage 15 to the upper steam drum 1 The third pass to the multiple smoke pipes 6 has a three pass structure.

  As shown in FIG. 1, the composite steam boiler using the chain stoker grate for solid fuel according to the present invention is charged with solid fuel such as wood pellets, wood chips, palm coconut shell, and coal in the combustion chamber 17. The solid fuel input through the fuel input device 14 is disposed on the chain stalker grate 12, and finally undergoes a combustion process such as preheating, drying, combustion, loss of ignition, and the like. The flow path is converted to ash.

  On the other hand, the ash scattered inside by the use of the boiler is attached to the many smoke pipes 6 of the upper steam drum 1, and the attached scattered ash obstructs the flow of the combustion gas in the many smoke pipes. In this case, the process of transferring heat energy to the boiler water again while passing through the many smoke pipes 6 is obstructed. Therefore, the composite steam boiler according to the present invention is arranged corresponding to each of a large number of smoke pipes in front of the large number of smoke pipes 6 as shown in FIG. As shown in FIG. 5 and FIG. 6, there is provided a smoke tube cleaning device 7 having a number of high pressure air nozzles 8 for injecting high pressure air into a number of smoke tubes 6 at a high speed for a certain time.

1: Steam drum 2: Water drum 3: Vertical curve tube 4: Fin member 5: Thermal radiation unit 6: Smoke tube 7: Smoke tube cleaner 8: High pressure air nozzle 9: Air chamber 10: Air conditioning damper 11: Ash treatment pusher 12 : Chain stoker grate 13: Ash processing pusher lever 14: Fuel injection device 15: Combustion gas flow passage 16: Partition 17: Combustion chamber 18: Exhaust passage 19: Manhole 20: Drain

Claims (13)

A combustion chamber (17) in which solid fuel burns,
An upper steam drum (1) disposed at an upper portion of the combustion chamber (17), wherein the upper steam drum (1) is disposed horizontally inside the upper steam drum (1) and is disposed in the combustion chamber ( 17) a plurality of smoke pipes (6) for transmitting the combustion gas, each of the plurality of smoke pipes (6) being connected to the combustion chamber (17) at one end thereof, the upper steam drum (1),
Lower water drums (2) disposed at the lower left and right ends of the combustion chamber (17),
A plurality of vertical curved tubes (3) configured to be able to transmit water of the lower water drum (2) to the upper steam drum (1) in a state of being spaced apart at a predetermined interval, (3) is that the lower water drum (2) has at least a certain section while maintaining a certain distance from each other via the fin member (4) for maintaining airtightness and increasing the heat transfer area in the combustion chamber. A plurality of vertical curved tubes (3) that hold a vertical state in the direction of the upper steam drum (1) and a seating portion that is rotated by a drive motor, and is injected into the seating portion. The solid fuel is configured to burn while moving in a seated state, and the seating portion is disposed at a lower portion of the lower water drum (2) and forms a bottom portion of the combustion chamber (17). Stoker grate (12)
The plurality of vertical curved pipes (3) includes a plurality of vertical curved pipe groups, and the plurality of vertical curved pipe groups are connected to the upper steam drum (1) by different paths, thereby A combined steam boiler using a chain stoker grate for solid fuel, characterized by opening a passage for combustion gas flow between different paths.   The combined steam boiler using a chain stoker grate for solid fuel according to claim 1, wherein the fin member (4) is a steel plate.   The combustion gas flow passes through a first path from a lower portion of the combustion chamber (17) to a lower vertical curved tube group in the plurality of vertical curved tube groups, and a lower vertical in the plurality of vertical curved tube groups. A three-pass structure of a second pass from the bottom of the curved tube group to the combustion gas flow passage and a third pass from the combustion gas flow passage to the multiple smoke tubes in the upper steam drum (1). A combined steam boiler using the chain stoker grate for solid fuel according to claim 1.   A fuel injection device (14) for supplying the solid fuel to the combustion chamber (17) is further provided. The injected solid fuel is disposed on the chain stoker grate (12), and is preheated and dried. The combined type using a chain stoker grate for solid fuel according to claim 1, further comprising a flow path that is finally converted into ash through a combustion process such as combustion, ignition loss, etc. Steam boiler.   In order to clean the scattered ash adhering to the large number of smoke pipes (6) of the upper steam drum (1), it is arranged corresponding to each of the large number of smoke pipes in front of the large number of smoke pipes (6), and is fixed. The apparatus further comprises a smoke tube cleaning device (7) having a plurality of high pressure air nozzles (8) for injecting high pressure air into the inside of the plurality of smoke tubes (6) at a high speed for a period of time. 5. A combined steam boiler using the chain stoker grate for solid fuel according to any one of 4.   In order to inject the regulated air required for the solid fuel below the chain stoker grate (12), a number of air chambers (9) and the required amount of air in each of the plurality of air chambers A combined steam using a chain stoker grate for a solid fuel according to any one of claims 1 to 4, further comprising a handle type air conditioning damper (10) for regulating the air conditioner. boiler. A box for collecting the ash falling on the lower part of the chain stoker grate (12) and a sliding for discharging the ash collected in the box for collecting the ash out of the steam boiler A plurality of ash treatment pushers (11) of the type,
When the ash falls into the gaps in the chain stoker grate (12), it falls into the multiple air chambers (9),
Both sides of the air chamber (9) are inclined so that the falling ash collects on one side,
The ash treatment pusher (11) closes a hole for discharging ash to the outside, and the hole is opened or closed by moving the ash treatment pusher (11) back and forth, and The combined steam boiler using a chain stoker grate for solid fuel according to claim 6, wherein the combined steam boiler is configured to push the ash into the hole while moving back and forth.   An upper portion of the chain stoker grate (12) is made of an arched refractory and further includes a heat radiating portion (5) for assisting combustion of solid fuel, and the heat radiating portion includes the combustion chamber (17). The combustion gas in the combustion chamber (17) is induced to raise the combustion temperature in the combustion chamber (17), and the ash generated after the combustion is guided to the ash treatment facility. A combined steam boiler using the chain stoker grate for solid fuel according to any one of claims 1 to 4.   The chain stoker grate for a solid fuel according to claim 8, further comprising one or more partition walls (16) for increasing the residence time and heat transfer effect of the combustion gas in the combustion chamber. Combined steam boiler using.   The fuel injection device (14) forms a fan-shaped trajectory configured such that a fuel layer of a certain thickness is uniformly formed on the chain stoker grate (12) inside the combined steam boiler. 5. The combined steam boiler using a chain stoker grate for solid fuel according to claim 4, wherein the solid fuel is introduced. A combustion chamber (17) in which solid fuel burns,
An upper steam drum (1) disposed at an upper portion of the combustion chamber (17), wherein the upper steam drum (1) is disposed horizontally inside the upper steam drum (1) and is disposed in the combustion chamber ( 17) a plurality of smoke pipes (6) for transmitting the combustion gas, each of the plurality of smoke pipes (6) being connected to the combustion chamber (17) at one end thereof, the upper steam drum (1),
Lower water drums (2) disposed at the lower left and right ends of the combustion chamber (17),
A plurality of vertical curve tubes (3) configured to be able to transmit water of the lower water drum (2) to the upper steam drum (1) in a state of being spaced apart at a constant interval, the plurality of vertical curve tubes (3) is that the lower water drum (2) has at least a certain section while maintaining a certain distance from each other via the fin member (4) for maintaining airtightness and increasing the heat transfer area in the combustion chamber. A plurality of vertical curved tubes (3) that hold a vertical state in the direction of the upper steam drum (1), and a seating portion that is rotated by a drive motor, and is injected into the seating portion. The solid fuel is configured to burn while moving in a seated state, and the seating portion is disposed at a lower portion of the lower water drum (2) and forms a bottom portion of the combustion chamber (17). Stoker grate (12)
The plurality of vertical curved pipes are connected to the upper steam drum (1) in different paths, thereby opening a passage of combustion gas flow between the different paths,
The combustion gas flow passes through a first path from a lower portion of the combustion chamber (17) to a lower vertical curved tube group in the plurality of vertical curved tube groups, and a lower vertical in the plurality of vertical curved tube groups. A three-pass structure of a second pass from the bottom of the curved tube group to the combustion gas flow passage and a third pass from the combustion gas flow passage to the multiple smoke tubes in the upper steam drum (1). A combined steam boiler using a chain stoker grate for solid fuel. A combustion chamber (17) in which solid fuel burns,
An upper steam drum (1) disposed at an upper portion of the combustion chamber (17), wherein the upper steam drum (1) is disposed horizontally inside the upper steam drum (1) and is disposed in the combustion chamber ( 17) a plurality of smoke pipes (6) for transmitting the combustion gas, each of the plurality of smoke pipes (6) being in communication with the combustion gas at one end thereof, the upper steam drum (1),
Lower water drums (2) disposed at the lower left and right ends of the combustion chamber (17),
A plurality of vertical curved pipes (3) configured to be able to transmit the water of the lower water drum (2) to the upper steam drum (1) in a vertically separated state while maintaining horizontal at a constant interval. Thus, the plurality of vertical curved tubes (3) maintain a certain distance from each other via fin members (4) for maintaining airtightness in the combustion chamber and increasing a heat transfer area, and at least certain intervals are provided. A plurality of vertical curved pipes (3) for maintaining a vertical state in a direction from the lower water drum (2) to the upper steam drum (1), and a seating portion that is rotated by a drive motor, The injected solid fuel is combusted while moving in a state where the injected solid fuel is seated, and the seat is disposed below the lower water drum (2) and is disposed in the combustion chamber (17). Chain stoker grate () 12)
The plurality of vertical curved pipes (3) includes a plurality of vertical curved pipe groups, and the plurality of vertical curved pipe groups are connected to the upper steam drum (1) by different paths, thereby Open a passage of combustion gas flow between different paths,
A box for collecting the ash falling on the lower part of the chain stoker grate (12) and a sliding for discharging the ash collected in the box for collecting the ash out of the steam boiler A plurality of ash treatment pushers (11) of the type,
When the ash falls in the gaps of the chain stoker grate (12), a plurality of air chambers (9) are arranged below the chain stoker grate (12) for injecting air necessary for the solid fuel. )
Both sides of the air chamber (9) are inclined so that the falling ash collects on one side,
The ash treatment pusher (11) closes a hole for discharging ash to the outside, and the hole is opened or closed by moving the ash treatment pusher (11) back and forth, and A combined steam boiler using a chain stoker grate for solid fuel, which is configured to push the ash into the hole while moving back and forth. A combustion chamber (17) in which solid fuel burns,
An upper steam drum (1) disposed at an upper portion of the combustion chamber (17), wherein the upper steam drum (1) is disposed horizontally inside the upper steam drum (1) and is disposed in the combustion chamber ( 17) a plurality of smoke pipes (6) for transmitting the combustion gas, each of the plurality of smoke pipes (6) being in communication with the combustion gas at one end thereof, the upper steam drum (1),
Lower water drums (2) disposed at the lower left and right ends of the combustion chamber (17),
A plurality of vertical curve tubes (3) configured to be able to transmit water of the lower water drum (2) to the upper steam drum (1) in a state of being spaced apart at a constant interval, the plurality of vertical curve tubes (3) is that the lower water drum (2) has at least a certain section while maintaining a certain distance from each other via the fin member (4) for maintaining airtightness and increasing the heat transfer area in the combustion chamber. A plurality of vertical curved tubes (3) that hold a vertical state in the direction of the upper steam drum (1), and a seating portion that is rotated by a drive motor, and is injected into the seating portion. The solid fuel is configured to burn while moving in a seated state, and the seating portion is disposed at a lower portion of the lower water drum (2) and forms a bottom portion of the combustion chamber (17). Stoker grate (12)
An upper portion of the chain stoker grate (12) is made of an arched refractory and further includes a heat radiating portion (5) for assisting combustion of solid fuel, and the heat radiating portion includes the combustion chamber (17). The combustion gas in the combustion chamber (17) is induced to raise the combustion temperature in the combustion chamber (17), and the ash generated after the combustion is guided to the ash treatment facility. A combined steam boiler that uses a chain stoker grate for solid fuel.