WO2015144035A1 - Dispositif de combustion pour combustibles solides et ensemble d'admission de celui-ci - Google Patents

Dispositif de combustion pour combustibles solides et ensemble d'admission de celui-ci Download PDF

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Publication number
WO2015144035A1
WO2015144035A1 PCT/CN2015/074932 CN2015074932W WO2015144035A1 WO 2015144035 A1 WO2015144035 A1 WO 2015144035A1 CN 2015074932 W CN2015074932 W CN 2015074932W WO 2015144035 A1 WO2015144035 A1 WO 2015144035A1
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Prior art keywords
combustion
inlet
furnace
wall
feed port
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PCT/CN2015/074932
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English (en)
Chinese (zh)
Inventor
车战斌
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车战斌
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Publication of WO2015144035A1 publication Critical patent/WO2015144035A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/02—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom
    • F23B50/04—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom the movement of combustion air and flue gases being substantially transverse to the movement of the fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/02—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom
    • F23B50/06—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom the flue gases being removed downwards through one or more openings in the fuel-supporting surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/02—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom
    • F23B50/08—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom with fuel-deflecting bodies forming free combustion spaces inside the fuel layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/04—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for guiding the flow of flue gases, e.g. baffles

Definitions

  • This invention relates to the field of solid fuel combustion, and more particularly to a solid fuel combustion apparatus and its feed port assembly.
  • the inventors have found through careful study that the main difference between biomass burning materials and low-grade coal (such as lignite, peat, etc.) and high-grade coal is that high-grade coal has a high fixed carbon content (generally over 90%). Therefore, it is mainly fixed carbon combustion mode when burning; while biomass combustion materials and low-grade coal have relatively low fixed carbon content and relatively high volatile content (about 50%-70%).
  • the solid fuel with high volatile content mainly has two characteristics: 1) the volatile matter precipitation temperature is lower than the volatile ignition point; 2) the volatile matter has a higher ignition point than the ash melting point.
  • the current combustion furnaces are generally classified into two types: a forward combustion furnace and a reverse combustion furnace. Due to the above characteristics of biomass fuel and low-grade coal, continuous combustion can not be achieved by using these two combustion furnaces.
  • the existing combustion device generally enters the wind through the furnace, so that the solid fuel on the furnace is subjected to high-temperature combustion. Since the ash melting point is lower than the ignition point of the volatile matter and the fixed carbon, the combustion is performed in a high-temperature environment in which the carbon is burned on the furnace. After the ash is in a viscous molten state, it will stick to the furnace and cannot pass through the furnace or other ash removal mechanism.
  • the ash discharge (for example, the ash bar) is normally discharged, so that the viscous ash is mixed in the burning fuel, greatly affecting the combustion efficiency of the fuel. Moreover, the viscous ash adheres to the furnace raft and blocks the air inlet passage on the furnace. After a period of time, the furnace is pasted, so that the furnace cannot continue to work.
  • the characteristic of the trans-burning furnace is that the fire outlet is lower than the furnace, so that the flame generated by the combustion passes through the furnace and then reaches the fire exit.
  • This combustion mode can be ignited by the flame when passing through the furnace as compared with the forward combustion, and the combustion efficiency is improved.
  • the high temperature flame is located in the furnace position, this also makes the temperature of the furnace position very high. In the high temperature environment, the burnt ash is in a viscous molten state, which will paste on the furnace and block the furnace. The air flow passage will soon ruin the furnace, making the furnace unable to continue working.
  • the Chinese utility model patent No. 01220213695.8 proposes a hot blast stove 900 which can be used for full combustion of various solid combustibles and multi-point air distribution.
  • the hot blast stove includes a furnace body, and an upper combustion chamber 92 and a lower combustion chamber 93 are respectively disposed in the furnace body, and an upper furnace 94 and a lower furnace are respectively disposed at the bottoms of the upper combustion chamber 92 and the lower combustion chamber 93, respectively.
  • 95 below the lower furnace 95 is a ash removal chamber 96, and a burner outlet 98 is provided on the furnace body of the lower combustion chamber 93.
  • the upper combustion chamber 92 is provided with a funnel-shaped combustion chamber 910 whose upper portion is integrated with the inner wall of the furnace, and whose lower portion is reduced in diameter.
  • the lower port of the funnel-shaped fuel tank 910 is located on the upper furnace 94, and the center of the funnel-shaped fuel tank 910
  • a cylindrical pyrotechnic passage 911 having a lower end opening is formed in the longitudinal direction, and an annular upper air passage 912 is formed between the outer wall of the lower portion of the funnel-shaped fuel storage tank 910 and the inner wall of the furnace body 91, and the outer wall of the lower cylinder of the funnel-shaped fuel storage tank 910 is evenly opened.
  • the outer wall of the furnace body 91 is provided with two air inlets 914 communicating with the annular air duct, and the air inlet 914 is connected with the air duct 915.
  • the hot blast stove attempts to solve the problems of forward combustion and trans combustion by combining positive and negative combustion.
  • the hot blast stove 900 when used, it has the following defects and cannot be continuously used:
  • the hot air furnace has a large amount of air from the lower furnace 95 at the bottom of the lower combustion chamber 93, causing the temperature of the lower furnace 95 to be too high, and some solid biomass fuels (such as straw, the ash melting point is relatively low, so that the hot blast stove produces a ashing phenomenon when burning solid biomass fuel, so that the ash produced by combustion is at The fused state is fused and bonded to the furnace 95.
  • the gap of the lower furnace 95 is melted and the ash is not effectively discharged, thereby causing the hot blast stove to be unable to continue working.
  • the present invention provides a solid fuel combustion apparatus comprising a furnace having an air inlet and a solid fuel feed port on a furnace, the feed port being disposed at the top of the furnace and corresponding to the furnace
  • the feed port is provided with a furnace for receiving solid fuel entering from the feed port, the furnace above the furnace on one side of the feed port is formed as an inlet side, and the inlet port opposite to the inlet side is another
  • the side furnace is formed as a combustion side; a combustion chamber that is connected to the exhaust gas outlet is formed on the combustion side; wherein a choke wall that blocks the airflow from entering the air inlet side is formed at a lower end position of the inlet side of the inlet port, A position opposite to the choke wall on the combustion side of the port is formed with an air flow passage through which the airflow passes.
  • the solid fuel entering from the feed port forms a pile layer on the furnace, and the furnace is formed on the side of the pile layer as the inlet side, and the pile opposite to the inlet side
  • the other side of the layer is formed as a combustion side.
  • the stack layer is ignited, and air is introduced from the inlet side of the stack layer, the wind passes transversely through the stack layer, passes from the side of the stack side of the combustion side, and the combustion flame burns toward the combustion chamber to form a lateral direction.
  • the combustion mode as the combustion progresses, the fuel gradually moves down as the volume becomes smaller, and the new fuel is automatically replenished to the pile layer under the action of gravity, and the volatiles are precipitated after being heated; the wind carries the volatiles deposited from the pile
  • the burning side of the material layer flows out and flows toward the combustion chamber, the volatile matter is ignited by the combustion flame burning toward the combustion chamber, enters the combustion chamber to burn, and the combustion exhaust gas is discharged from the exhaust gas outlet; meanwhile, the fixed carbon fuel after the volatile matter is ignited,
  • the fixed carbon combustion is carried out to generate a new combustion flame, and the ash generated after the burnout is discharged through the furnace at the bottom of the pile layer, and as the combustion progresses, the new fuel continuously fills the pile layer to form a combustion cycle.
  • the air inlet When the combustion device of the present invention is in the fire-extinguishing state, the air inlet is closed, and a small amount of air outside the furnace enters the furnace through the solid fuel gap of the inlet, and at this time, after the airflow formed by the small amount of air enters the inlet, Blocked by the choke wall at the bottom end of the feed port, under the negative pressure formed by the exhaust gas outlet, the gas flow passage at the bottom end of the combustion side through the feed port is discharged from the exhaust gas outlet.
  • the combustion consumption of the gas flow formed by the small amount of air entering the combustion layer at the lower part of the pile layer during the fire extinguishing is effectively avoided or reduced, thereby reducing the burning state of the combustion device in the fire extinguishing state. Energy consumption.
  • the volatile matter is precipitated in the fuel and the fixed carbon combustion is carried out in the stack layer, and as the combustion progresses, the volume of the fuel is reduced after the volatile matter is released, under the action of gravity.
  • the new fuel is automatically replenished from the feed port to the stack layer, and the fixed carbon combustion of the lower layer fuel provides the heat required for the volatilization of the upper layer of new fuel, new fuel
  • the replenishing speed depends on the burning speed of the lower layer fuel, thereby naturally achieving the matching of the upper volatilization precipitation and the burning speed of the fixed carbon fuel, and effectively solving the safety hazard problem existing in the existing hot blast stove due to the mismatch of the burning speed.
  • the fuel newly added to the pile layer is heated by the lower layer of fixed carbon fuel, and the volatile matter is discharged toward the combustion chamber, and the lower layer of fixed carbon fuel is burned to generate flame.
  • the flame is also driven toward the combustion chamber by the air flow.
  • the volatile matter passes through the combustion flame, it is ignited by the high temperature generated by the combustion flame, thereby achieving full combustion of the volatile matter.
  • the combustion apparatus of the present invention can automatically and orderly feed by gravity with the progress of combustion, the combustion furnace can be placed in an unattended operation state, which not only saves labor, but also causes the pile layer to be in a dynamic equilibrium state.
  • the fixed carbon combustion and volatile matter precipitation have been in a continuous and stable combustion state, which effectively ensures the full combustion of the volatiles, improves the combustion efficiency, and realizes the orderly controllable combustion of the combustion furnace.
  • the present invention introduces air from one side of the stack layer, a combustion chamber is provided on the combustion side opposite to the inlet side of the stack layer.
  • a combustion chamber is provided on the combustion side opposite to the inlet side of the stack layer.
  • the combustion station As the combustion progresses, the fixed carbon fuel whose volume becomes smaller gradually moves downward, and the longer the burning time, the lower the fixed carbon fuel is located, so that the lower the fixed carbon combustion layer is lower, the lower the temperature, the combustion station
  • the generated ash is also discharged into the lower ash chamber through the furnace under the action of gravity under the action of the fixed carbon fuel moving downward, which effectively solves the problem of the ash existing in the existing combustion furnace and ensures the combustion furnace. Continuous and stable combustion.
  • the baffle wall may be in contact with the inlet side sidewall of the feed port; in another alternative example, the baffle wall may be adjacent to the inlet side of the inlet port Set at the bottom of the wall.
  • the top wall of the furnace inlet side of the feed inlet integrally extends downwardly to define an extension section, the side wall of the extension section being formed as the flow blocking wall.
  • the feed port is located on the side wall of the inlet side or the top wall of the furnace is connected to a baffle, the baffle wall being formed by the side wall of the baffle.
  • the bottom end of the choke wall is lower than the bottom end of the side wall of the feed opening on the combustion side, and the height difference forms an air flow at a position opposite to the choke wall at the combustion side of the feed port. aisle.
  • the location of the combustion side of the inlet opposite the baffle wall has a void structure through which the gas stream passes, the void structure forming the gas flow passage.
  • the feed port is located at a bottom end of the side wall of the combustion side or at least a side of the bottom side of the combustion side furnace top wall adjacent to the bottom end of the combustion side side wall of the inlet port. a wall on which the side wall is formed A void structure through which a gas stream passes.
  • the bottom end of the side wall having the void structure is disposed substantially flush with the bottom end of the baffle wall.
  • the bottom end of the sidewall having the void structure is in contact with the furnace.
  • a sidewall having a void structure is integrally formed with the furnace.
  • the inlet port may be provided with a feed port socket.
  • the inlet port sleeve has at least a side wall that is sleeved on the air inlet side wall of the top opening of the furnace, and the inlet side wall of the inlet port is The lower end protrudes from the bottom end of the feed port, and a portion of the side wall of the inlet port of the feed port constitutes the baffle wall.
  • the bottom end of the baffle wall is lower than the bottom end of the side wall of the feed port on the combustion side, and the height difference is at a position opposite to the choke wall on the combustion side of the feed port. Forming a gas flow path.
  • the feed port socket has a sidewall on the combustion side.
  • the combustion side sidewall of the feed port socket extends downwardly beyond the bottom end of the furnace top opening, the combustion side sidewall and the resistance of the feed port socket
  • the opposite locations of the flow walls have a void structure through which the gas flows.
  • the feed port is provided with a feed hopper that is integrally or separately disposed with the feed hopper.
  • the solid fuel forms a stacking layer between the feed port and the furnace, and the stack layer constitutes a separator separating the inlet side and the combustion side.
  • the stack layer is in contact with the inner wall of the furnace at both sides between the inlet side and the combustion side such that the inlet side separates the inlet side from the combustion side.
  • the two opposite sides of the furnace above the furnace are located between the inlet side and the combustion side and the sides of the stack between the inlet side and the combustion side.
  • the formed natural stacking slope is uniform or located inside the natural stacking slope, so that the two sides of the stacking layer between the inlet side and the burning side are in contact with the inner wall of the furnace.
  • the top wall of the furnace chamber of the combustion chamber is higher than the top wall of the furnace chamber where the stack layer is located.
  • a heat storage body is provided on the combustion side of the furnace.
  • the heat accumulator is disposed laterally.
  • the heat storage body is disposed at an angle to a horizontal direction, and the heat storage body is formed as a heat storage orifice having a through hole.
  • the combustion chamber may have two or more.
  • the invention also provides a feed port assembly comprising a feed port socket that is sleeved on the feed port of the solid fuel combustion device, wherein the feed port socket has at least a socket at the feed port.
  • the airflow entering the feed inlet enters the choke wall on the inlet side.
  • the bottom end of the baffle wall is lower than the bottom end of the side wall of the feed port on the combustion side, and the height difference is formed at a position opposite the choke wall at the combustion side of the feed port. Air flow channel.
  • the feed port kit has a sidewall on the combustion side.
  • the combustion side sidewall of the feed port socket extends downwardly beyond the bottom end of the feed port, the combustion side sidewall of the feed port socket
  • the opposite position of the baffle wall has a void structure through which the airflow passes.
  • the feed port is provided with a feed hopper that is integrally or separately disposed with the feed hopper.
  • combustion furnace of the present invention in the combustion state, the volatile matter can be almost completely burned, the combustion efficiency of the combustion furnace is over 95%, and there is no black smoke emission, and the combustion of the solid fuel with high volatile content is realized. Clean emissions. Moreover, in the fire-extinguishing state, since the choke wall and the air flow passage structure of the feed port effectively reduce the fuel consumption, there is only a very small energy consumption.
  • the combustion furnace of the invention fully utilizes the characteristics of gravity and heat transfer, not only can meet the requirements of the fuel principle, but also has the advantages of simple structure, low manufacturing cost and convenient use, thereby providing favorable conditions for the popularization and application of the solid fuel with high volatile content.
  • FIG. 1 is a schematic structural view of a conventional positive and negative hot air furnace
  • Figure 2 is a schematic view showing the combustion state of the combustion apparatus of the present invention.
  • Figure 3 is a schematic view showing the structure of the fire extinguishing state of the combustion apparatus of the present invention.
  • Figure 3A is an enlarged view of a portion A of Figure 3;
  • Figure 4 is a schematic view showing the structure of the extension section of the present invention extending downward from the top wall of the partial furnace located on the inlet side;
  • Figure 5 is a schematic view showing the structure of the flow blocking wall adjacent to the inlet side wall of the inlet port of the present invention
  • Figure 6 is a schematic view showing another structure of the choke wall of the present invention adjacent to the inlet side wall of the inlet port;
  • Figure 7 is a schematic view showing the structure of the choke wall of the present invention formed by the side wall of the spoiler;
  • Figure 8 is a schematic view showing another structure of the choke wall of the present invention which is constituted by the side wall of the spoiler;
  • Figure 9 is a schematic view showing the structure of the feed port of the present invention at the bottom end of the combustion side provided with a side wall having a void structure;
  • FIG. 9A is a schematic side view showing a side wall of a segment having a void structure in FIG. 9;
  • 9B is another schematic structural view of a side wall having a void structure according to the present invention.
  • Figure 10 is a schematic view showing the structure of the side wall having the void structure in contact with the furnace;
  • Figure 11 is a schematic view showing the structure of a side wall having a void structure integrally formed with a furnace
  • Figure 12 is a schematic view showing the structure of a first embodiment of a combustion apparatus having a feed port socket according to the present invention
  • FIG. 12A is a schematic structural view of the feed port socket of FIG. 12;
  • Figure 13 is a schematic structural view of a second embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 13A is a schematic structural view of the feed port socket of Figure 13;
  • Figure 14 is a schematic structural view of a third embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 14A is a schematic structural view of the feed port socket of Figure 13;
  • Figure 15 is a schematic view showing the structure of a fourth embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 15A is a schematic structural view of the feed port socket of Figure 15;
  • Figure 16 is a schematic view showing the structure of a fifth embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 16A is a schematic structural view of the feed port socket of Figure 16.
  • Figure 17 is a schematic view showing the structure of a sixth embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 17A is a schematic structural view of the feed port socket of Figure 17;
  • Figure 18 is a schematic view showing the structure of a seventh embodiment of a combustion apparatus having a feed port socket according to the present invention.
  • Figure 18A is a schematic structural view of the feed port socket of Figure 18;
  • Figure 19 is a structural view of the top wall of the combustion chamber of the present invention above the top wall of the furnace in the pile area;
  • Figure 20 is a schematic view showing the structure of a lateral heat storage body provided on the combustion side of the present invention.
  • Figure 21 is a schematic view showing the structure of a heat storage body provided at an angle to the horizontal direction on the combustion side of the present invention.
  • 21A is a schematic side view showing the structure of a heat storage body of the present invention.
  • Figure 22 is a side cross-sectional structural view of the combustion apparatus of the present invention.
  • Figure 23 is a side elevational cross-sectional view showing another embodiment of the combustion apparatus of the present invention.
  • Figure 24 is a schematic view showing the structure of a combustion apparatus of the present invention having two combustion chambers.
  • Combustion device 100 heat exchange device 200; exhaust gas discharge port 201;
  • Furnace 10 inlet side 101; combustion side 102; side wall faces 103, 104; furnace top wall extension 105;
  • Stack layer 1 two opposite sides 161, 162; natural stacking slope 16;
  • a sidewall 13 having a void structure having a void structure; a furnace 14; a feed hopper 15;
  • Heat storage body 2 heat storage orifice plate 21;
  • Combustion chamber 3 combustion chamber outlet 31;
  • Solid fuel 5 volatile matter 51; fixed carbon fuel 52 after volatilization; furnace ash 53.
  • the present invention provides a combustion apparatus 100 for a solid fuel 5.
  • the combustion apparatus 100 includes a furnace 10 on which an air inlet 12 and a solid fuel feed port 11 are provided.
  • the feed port 11 is provided at the top of the furnace 10.
  • the corresponding feed port 11 in the furnace 10 is provided with a furnace 14 for receiving the solid fuel 5 entering from the feed port 11, and the furnace 10 above the furnace 14 is formed into the inlet of the furnace at one side of the feed port 11.
  • the inlet side 01 is supplied with air by the air inlet 12; the furnace 10 is formed on the other side of the inlet 11 opposite the inlet side 101 as a combustion side 102; and on the combustion side 102 is formed to be electrically connected to the exhaust side The combustion chamber 3 of the outlet 201.
  • a block wall 113 for blocking the flow of air into the inlet side is formed, and at a position opposite to the choke wall 113 of the combustion side 102 of the inlet port 11, a flow for passing air is formed.
  • Air flow passage 114 is provided at the lower end of the inlet side 101 of the inlet port 11
  • a block wall 113 for blocking the flow of air into the inlet side is formed, and at a position opposite to the choke wall 113 of the combustion side 102 of the inlet port 11, a flow for passing air is formed.
  • Air flow passage 114 is formed at the lower end of the inlet side 101 of the inlet port 11, a block wall 113 for blocking the flow of air into the inlet side is formed, and at
  • the solid fuel 5 entering from the feed port 11 forms a pile layer 1 on the furnace 14, which is formed on one side of the pile layer 1
  • the wind side 101, the other side opposite to the air inlet side 101 is formed as a combustion side 102; at the time of combustion, the pile layer 1 is ignited, air is introduced from the inlet side 101 of the pile layer 1, and the wind passes transversely through the pile
  • the material layer 1 passes through the side of the pile layer 1 of the combustion side 102, and the combustion flame is burned toward the combustion chamber 3 to form a lateral combustion mode; as the combustion progresses, the fuel gradually moves down as the volume becomes smaller, and the new fuel It is automatically replenished to the pile layer 1 under the action of gravity, and is heated to precipitate the volatile portion 51; the volatile volatile portion 51 from the wind exits from the combustion side 102 of the pile layer 1 and flows toward the combustion chamber 3, and the volatile matter 52 It is ignited by the combustion flame burning toward the combustion chamber 3, enters the combustion
  • the fixed carbon fuel 52 after the volatile matter 51 is ignited, and the fixed carbon combustion is performed to generate a new combustion flame.
  • the ash 53 produced after the burnout is discharged through the furnace 14 at the bottom of the pile layer 1. As the combustion proceeds, fresh fuel constantly replenished packed bed 1 is formed automatically combustion cycle.
  • the stock layer 1 in the present invention refers to a pile formed of a solid fuel between the feed port 11 and the furnace 14.
  • the newly introduced fuel in the upper layer is first heated to a temperature at which the volatile matter is precipitated to precipitate volatiles, and then ignited for fixed carbon combustion, and gradually decreases as the volume of the fuel becomes smaller as the combustion progresses.
  • the ash 53 generated after the burnout is discharged through the furnace 14; at the same time, the new fuel is automatically replenished to the pile layer 1 under the action of gravity, so that the pile layer 1 between the feed port 11 and the furnace 14 is burning.
  • the process is in a state of dynamic equilibrium, and the pile layer 1 maintains a stable pile shape.
  • the fuel is released from the volatile matter 51 and the fixed carbon combustion is in the furnace above the furnace 14, during the combustion, the fuel is released after the volatile matter 51 is released.
  • the volume becomes smaller, automatically moves downward under the action of gravity, and is gradually ignited by the lower combustion flame.
  • the new fuel is automatically replenished from the feed port 11 to the pile layer 1 under the action of gravity, and the fixed carbon combustion of the lower layer of fuel is
  • the evaporation of the upper fuel volatiles provides the required heat, and the replenishing speed of the new fuel depends on the burning speed of the lower fuel, thereby naturally achieving the natural matching of the upper volatiles precipitation and the burning speed of the fixed carbon fuel 52, effectively solving the existing hot air furnace.
  • the volatiles 51 which are heated and precipitated by the lower fixed carbon fuel 52 are flowed toward the combustion chamber 3, and the lower fixed carbon fuel 52 is burned to generate a flame which is also directed toward the air.
  • the combustion chamber 3 is burned, and when the volatile matter 51 passes through the combustion flame, it is ignited by the high temperature generated by the combustion flame, thereby achieving sufficient combustion of the volatile matter.
  • the combustion device can be placed in an unattended operating state, which not only saves manpower, but also because the stack layer 1 is in a state of dynamic equilibrium, the stack layer 1 Maintaining a stable stock shape during the combustion process, so that the fixed carbon combustion and volatile matter precipitation in the furnace 1 are always in a continuous stable combustion state, effectively ensuring full combustion of volatiles, improving combustion efficiency, and achieving combustion. Orderly controlled combustion of the device.
  • the present invention provides a combustion chamber 3 from the combustion side 102 of the side of the stack layer 1 and opposite the inlet side 101, the main gas stream is passed transversely through the stack layer 1 from the combustion side 102, A high temperature flame zone is formed on the combustion side 102 of the stock layer 1 to provide a high temperature environment for ignition of the volatiles to form a lateral combustion mode.
  • the choke wall 113 may be associated with the side wall 111 of the inlet side 101 of the inlet port 11. Connect the settings.
  • the choke wall 113 of the present invention may be adjacent to the bottom end of the side wall 111 of the air inlet side 101 of the air inlet 11 Settings.
  • the top wall of the inlet side of the inlet side 11 of the feed port 11 integrally extends downwardly to form an extension 105, from which the extension The side wall of the 105 is configured as the obstruction wall 113.
  • the top wall of the furnace may extend downwardly to form an extension 105.
  • a portion of the top wall of the furnace extends downward to form an extension 105.
  • the feed port 11 is located on the side wall 111 of the inlet side 101 or the choke member 18 is connected to the top wall of the grate.
  • the blocking wall 113 is formed by the side wall of the spoiler 18.
  • the bottom end of the choke wall 113 is lower than the bottom end of the side wall 112 of the combustion side 102 at the feed port 11 by the height difference.
  • An air flow passage 114 is formed at a position where the combustion side 102 of the feed port 11 opposes the choke wall 113.
  • the position of the combustion side 102 of the feed port 11 opposite to the choke wall 113 has a void structure through which the airflow passes.
  • the void structure constitutes the air flow passage 114.
  • the feed port 11 is located at the bottom end of the side wall 112 of the combustion side 102 or the combustion side 102 furnace top wall is adjacent to the feed port 11 for combustion.
  • the bottom end of the side wall 112 of the side 102 has a bottom portion extending downwardly provided with at least one side wall 13 on which the gap structure for airflow is formed.
  • the bottom end of the side wall 13 having the void structure is disposed substantially flush with the bottom end of the choke wall 113.
  • the bottom end of the side wall 13 having the void structure is in contact with the furnace 14.
  • the side wall 13 having a void structure is integrally formed with the furnace 14.
  • the present invention also provides a feed port assembly for the above-described solid fuel combustion apparatus 100, the feed port assembly including a feed port sleeve sleeved on the feed port 11. Connector 19.
  • the choke wall 113 and the gas flow passage 114 may be formed at the lower end of the feed port 11 by the feed port socket 19.
  • the inlet port sleeve 19 has at least an inlet side wall 191 that is sleeved on the side wall of the inlet side 101 of the inlet port 11.
  • the inlet side wall 191 of the inlet port sleeve 19 extends downwardly and protrudes from the bottom end of the inlet port 11.
  • the inlet port Partial side wall structure protruding from the socket 19 The airflow that blocks the entry into the feed port 11 enters the choke wall 113 of the inlet side 101.
  • the bottom end of the choke wall 113 is lower than the bottom end of the side wall of the combustion side 102 of the feed port 11, and the height difference is opposite to the choke wall 113 at the combustion side 102 of the feed port 11.
  • the position forms an air flow passage 114.
  • the feed port socket 19 may have only the inlet side wall 191. As shown in FIGS. 14-18, the feed port socket 19 can also have a combustion side sidewall 192 on the combustion side 102.
  • the combustion side side wall 192 of the feed port socket 19 extends downwardly beyond the bottom end of the feed port 11, and the combustion side side wall 192 of the feed port socket 19 is
  • the opposing position of the baffle wall 113 has a void structure through which the airflow passes, and the air gap passage 114 is formed by the void structure.
  • a feed hopper 15 may be provided on the feed port 11.
  • the feed port socket 19 can be disposed separately from the feed hopper 15.
  • the inlet port fitting 19 can be integrally formed with the feeding hopper 15, and the integrated structure is compared. Simple and easy to install, it can reduce manufacturing costs.
  • the solid fuel 5 is formed with a stock layer 1 between the feed port 11 and the furnace 14, and the pile layer 1 constitutes an isolation between the isolated inlet side 101 and the combustion side 102. body.
  • the two opposite sides 161, 162 of the stack layer 1 between the inlet side 101 and the combustion side 102 are in contact with the inner walls 103, 104 of the furnace, so that the inlet layer 1 will enter the air.
  • Side 101 is isolated from combustion side 102.
  • the airflow generated by the wind entering the air inlet side 101 can only pass through the stack layer 1 to reach the combustion side 102, avoiding the wind from passing outside the stack layer 1 and doing useless work, ensuring the wind passing through the stack layer 1. Effective supply.
  • the side walls 103, 104 of the two opposite side inner walls between the inlet side 101 and the combustion side 102 of the furnace 10 above the furnace 14 and the stack layer 1 on the inlet side 101 The natural stacking slopes 16 that may be formed by the two sides 161, 162 between the combustion sides 102 are coincident or located inside the natural stacking slope 16 such that the two side wall faces 103 of the stack layer 1 between the inlet side 101 and the combustion side 102 , 104 is connected to the inner wall of the furnace, as shown in Figures 22 to 23 .
  • the shape of the side wall faces 103, 104 of the opposite side inner walls between the inlet side 101 and the combustion side 102 of the furnace 10 above the grate 14 can be set as needed, as long as the outer side of the natural stacking slope 16 is not exceeded, enabling the stacking
  • the two side wall faces 103, 104 of the layer 1 may be in contact with the furnace side wall faces 103, 104, and the specific shape thereof may not be limited. 22 shows an example in which the two side wall faces 103, 104 of the two opposite side inner walls between the inlet side 101 and the combustion side 102 of the furnace above the furnace 14 are vertical side walls, and FIG. 23 shows the furnace.
  • the two side wall faces 103, 104 of the two opposite side inner walls between the inlet side 101 and the combustion side 102 of the furnace above the crucible 14 are examples of inclined side walls.
  • the shape of the two side wall faces 103, 104 of the two opposite side inner walls between the inlet side 101 and the combustion side 102 of the furnace above the furnace 14 is not limited to the shape shown in the drawing. It can also be set to other various shapes, which will not be enumerated here.
  • the top wall of the combustion chamber 3 is higher than the stack
  • the top wall of the furnace is located on the layer 1 to facilitate the smooth flow of air into the combustion chamber 3.
  • the heat storage body 2 may be provided on the combustion side 102 of the furnace 10.
  • the combustion flame of the stacking layer 1 toward the combustion chamber 3 of the stacking layer 1 heats the regenerator 2 to increase the temperature of the volatiles flowing through the path, so that the volatilization generated during combustion
  • the portion is ignited in a high temperature environment when flowing through the heat storage body 2, which facilitates sufficient combustion of the volatile matter, thereby improving combustion efficiency.
  • the heat storage body 2 can be disposed laterally. As shown in FIG. 21 and FIG. 21A, the heat storage body 2 is disposed at an angle to the horizontal direction, and the heat storage body 2 is formed as a heat storage orifice plate 21 having a through hole.
  • the feed port 11 can be positioned such that the stack layer 1 forms a natural stacking slope on the inlet side 101 of the furnace 10.
  • the air inlet 12 may be higher than the upper surface of the natural stacking slope to supply air to the wind side 101 upon combustion.
  • the combustion chamber 3 may be connected to the heat exchange device 200 to utilize the heat generated by the combustion chamber 3.
  • the heat exchange device 200 may be a heat exchanger for heating, a crucible, a cooker, a water jacket, or the like.
  • the combustion chamber 3 may be provided with two or more as needed to suit various actual heat exchange requirements.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

L'invention concerne un dispositif de combustion (100) pour combustibles solides et un ensemble d'admission (11) de celui-ci. Un côté d'admission de l'air (101) est formé sur un côté de l'admission (11) dans un four (10) du dispositif de combustion (100), et un côté combustion (102) est formé sur l'autre côté opposé au côté d'admission de l'air (101) ; une paroi déflectrice d'écoulement (113) est formée au niveau de l'extrémité inférieure du côté d'admission de l'air (101), et un passage d'écoulement d'air (114) est formé sur le côté combustion (102) au niveau d'une position opposée à la paroi déflectrice d'écoulement (113). Le dispositif de combustion (100) peut faire baisser le taux de combustion des combustibles lorsqu'il est à l'état de veille.
PCT/CN2015/074932 2014-03-25 2015-03-24 Dispositif de combustion pour combustibles solides et ensemble d'admission de celui-ci WO2015144035A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410112492.3A CN104949109A (zh) 2014-03-25 2014-03-25 固体燃料的燃烧装置及其进料口组件
CN201410112492.3 2014-03-25

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WO2015144035A1 true WO2015144035A1 (fr) 2015-10-01

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WO2022151497A1 (fr) * 2021-01-18 2022-07-21 车战斌 Four à combustion doté d'un dispositif de stockage de chaleur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191422611A (en) * 1914-11-16 1915-09-09 Albert S Hanson Improvements in Furnaces.
CH198083A (fr) * 1937-09-29 1938-06-15 Rochat Charles L Appareil de chauffage.
DE662114C (de) * 1935-05-09 1938-07-05 Alexandre Adrianoff Verfahren zur Verbrennung von Rauch- und Schwelgasen in Feuerungen fuer feste Brennstoffe unter Benutzung einer Hilfsfeuerung
FR973237A (fr) * 1941-07-28 1951-02-08 Cie Des Surchauffeurs Générateur de vapeur à grande souplesse pour véhicule
FR77509E (fr) * 1959-04-11 1962-03-16 Stamicarbon Dispositif destiné à brûler des combustibles solides
CN2429733Y (zh) * 2000-07-05 2001-05-09 杨忠生 燃煤锅炉上燃反烧气化燃烧设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191422611A (en) * 1914-11-16 1915-09-09 Albert S Hanson Improvements in Furnaces.
DE662114C (de) * 1935-05-09 1938-07-05 Alexandre Adrianoff Verfahren zur Verbrennung von Rauch- und Schwelgasen in Feuerungen fuer feste Brennstoffe unter Benutzung einer Hilfsfeuerung
CH198083A (fr) * 1937-09-29 1938-06-15 Rochat Charles L Appareil de chauffage.
FR973237A (fr) * 1941-07-28 1951-02-08 Cie Des Surchauffeurs Générateur de vapeur à grande souplesse pour véhicule
FR77509E (fr) * 1959-04-11 1962-03-16 Stamicarbon Dispositif destiné à brûler des combustibles solides
CN2429733Y (zh) * 2000-07-05 2001-05-09 杨忠生 燃煤锅炉上燃反烧气化燃烧设备

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