Combustor combining a tilted rotating cone with a bubbling bed

Abstract

This invention discloses a combined inclined rotating cone and bubbling bed burner, comprising a rotating cone body, a combustion cone body, and a bubbling bed. The rotating cone body has a first chamber containing initial fuel and an accelerant. The combustion cone body has a second chamber, with a gap between the first and second chambers. The gap connects the first and second chambers. Combustible gas, fine ash, and small unburned fuel particles generated by the combustion of the initial fuel in the first chamber are carried out of the first chamber by a swirling current formed by the accelerant entering from the second inlet and enter the second chamber. Some of the fine ash and fuel particles collide with the inner wall of the second chamber, stall, and fall through the gap. The bubbling bed connects to the first and second chambers through the gap. Some of the fine ash and fuel particles falling from the second chamber and some of the fuel particles in the first chamber enter the third chamber for combustion. The combined inclined rotating cone and bubbling bed burner of this invention has high combustion efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of burners, and more specifically, to a combined burner of an inclined rotating cone and a bubbling bed. Background Technology

[0002] Patent EP0952398A2 discloses a burner capable of burning low-calorific-value, large-size fuels. However, this burner has a limited volume, which can easily lead to the following problems when burning fuel.

[0003] When the calorific value of the fuel is low, a large amount of fuel needs to be added to the burner per unit time to meet the heat load of the burner. This causes the volume of fuel and material in the burner to be greater than the volume of the burner. Some fuel will overflow from the burner and enter the ash discharge box connected to the burner, resulting in incomplete combustion of fuel and reduced overall combustion efficiency.

[0004] When fuel is difficult to ignite or break down, it takes a long time for the fuel clumps to burn or break down to a sufficiently small size to fall out of the burner's gaps. As fuel is continuously added to the burner, a large amount of large-sized fuel accumulates until its volume exceeds the burner's capacity. This causes some fuel to overflow from the burner and enter the ash discharge box, resulting in incomplete combustion and reduced overall combustion efficiency. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a combined inclined rotating cone and bubbling bed burner, which has high combustion efficiency, enabling more complete combustion of low-calorific-value, difficult-to-ignite, and difficult-to-break initial fuels, thereby improving overall combustion efficiency.

[0006] The inclined rotating cone and bubbling bed combined burner of this invention includes:

[0007] A rotating cone body having a first chamber containing initial fuel and combustion accelerator, wherein the initial fuel and combustion accelerator are burned in the first chamber;

[0008] The combustion cone body has a second chamber and a second air inlet, the second air inlet being connected to the second chamber and adapted to introduce an accelerant into the second chamber.

[0009] There is a gap between the first chamber and the second chamber, and the gap communicates with the first chamber and the second chamber. The combustible gas, fine ash and small unburned fuel particles generated by the initial fuel combustion in the first chamber are carried out of the first chamber and into the second chamber by the swirling flow formed by the combustion aid entering from the second air inlet. Some of the fine ash and fuel particles collide with the inner wall of the second chamber, lose speed and fall out from the gap.

[0010] A bubble bed having a third chamber containing a combustion accelerant, the third chamber being connected to the gap, the first chamber, and the second chamber. Some fine ash and fuel particles falling from the second chamber and some fuel particles from the first chamber enter the third chamber and are combusted there.

[0011] In the inclined rotating cone and bubbling bed combined burner of this invention, some of the fine ash and fuel particles generated by the initial fuel combustion in the rotating cone body collide with the inner wall of the second chamber and, after stalling, fall into the bubbling bed through the gap. The slag, some fuel particles, and unburned initial fuel generated after the initial fuel combustion in the rotating cone body can also fall into the bubbling bed through the gap, so that the slag, unburned initial fuel, fuel particles, and fine ash can form a bed layer in the bubbling bed. The bed layer has a high temperature, so that the unburned initial fuel can continue to burn in the third chamber. Therefore, the inclined rotating cone and bubbling bed combined burner of this invention has high combustion efficiency, making the low-calorific-value, difficult-to-burn, and difficult-to-break initial fuel burn more completely, thus improving the overall combustion efficiency.

[0012] In some embodiments, the gap has a size of 1cm to 5cm in the first direction.

[0013] In some embodiments, the bubbling bed further comprises a third air inlet and a slag outlet, the third air inlet and the slag outlet being connected to the third chamber, the third air inlet being adapted to introduce a combustion aid into the third chamber to cause the fuel particles in the third chamber to burn in the third chamber, and the slag outlet being adapted to discharge the slag produced by the combustion of the burning particles in the third chamber.

[0014] In some embodiments, the third chamber has a wind chamber located at the bottom of the third chamber and communicating with the third air inlet. The third air inlet is adapted to introduce a combustion-supporting agent into the wind chamber. The top of the wind chamber has a wind cap that connects the wind chamber and the third chamber, so that the combustion-supporting agent in the wind chamber enters the third chamber through the wind cap.

[0015] In some embodiments, the top surface of the air chamber is arranged at an angle, the top surface of the air chamber extends downward at an angle from one end to the other, one end of the top surface of the air chamber is adjacent to the third air inlet, and the other end of the top surface of the air chamber is adjacent to the slag outlet.

[0016] In some embodiments, the bubbling bed also has an observation hole, through which fuel particles in the third chamber are burned to form a bed layer, and the observation hole is used to observe the thickness of the bed layer.

[0017] In some embodiments, the rotating cone body includes a grate, and there are at least two grates arranged at intervals along the first direction. There is a gap between adjacent grates, and the size of the gap in the first direction is 1 cm to 2 cm. The gap communicates with the third chamber, and fuel particles in the first chamber can fall into the third chamber through the gap.

[0018] In some embodiments, the rotating cone body further has a first opening communicating with the first chamber and the gap. The rotating cone body also includes crushing teeth disposed on the wall surface of the first opening adjacent to the gap and arranged circumferentially at intervals along the first opening. The crushing teeth are used to crush fuel particles within the gap.

[0019] In some embodiments, the outer wall of the rotating cone body has a hollow wall, the hollow wall contains a combustion accelerant, the outer wall of the rotating cone body has a through hole, the through hole communicates with the first chamber, and the combustion accelerant in the hollow wall enters the first chamber through the through hole.

[0020] In some embodiments, the inclined rotating cone and bubbling bed combined burner further includes a housing, which is arranged around the outer wall of the rotating cone body, communicates with the gap, is detachably connected to the bubbling bed, and communicates with the third chamber. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a combined burner of an inclined rotating cone and a bubbling bed according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the rotating cone body of the inclined rotating cone and bubbling bed combined burner according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the combustion cone body of the inclined rotating cone and bubbling bed combined burner according to an embodiment of the present invention.

[0024] Figure 4 yes Figure 1An enlarged schematic diagram of part A in the middle.

[0025] Reference numerals: 1. Rotating cone body; 11. First chamber; 12. Hollow wall; 13. Through hole; 14. First opening; 15. First air inlet; 16. Support ring; 17. Support arm; 18. Cone top; 19. Hanging grate rod; 2. Combustion cone body; 21. Second chamber; 22. Second air inlet; 23. Outer wall; 24. Inner wall; 25. Fuel inlet; 26. Gap; 3. Interval; 4. Bubbling bed; 41. Third chamber; 42. Third air inlet; 43. Slag outlet; 44. Observation hole; 5. Crushing tooth; 6. Air chamber; 61. Air cap; 7. Casing. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The following description is based on the accompanying drawings. Figure 1-4 As shown, the inclined rotating cone and bubbling bed combined burner of this embodiment of the invention includes a rotating cone body 1, a combustion cone body 2 and a bubbling bed 4.

[0027] The rotating cone body 1 has a first chamber 11 containing initial fuel and combustion accelerator, which combust within the first chamber 11. The combustion cone body 2 has a second chamber 21 and a second air inlet 22, which communicates with the second chamber 21 and is adapted to introduce combustion accelerator into the second chamber 21.

[0028] There is a gap 3 between the first chamber 11 and the second chamber 21. The gap 3 communicates with the first chamber 11 and the second chamber 21. The combustible gas, fine ash and small unburned fuel particles generated by the initial fuel combustion in the first chamber 11 are carried out of the first chamber 11 and into the second chamber 21 by the swirling flow formed by the combustion aid entering from the second air inlet 22. Some of the fine ash and fuel particles collide with the inner wall of the second chamber 21, stall, and fall out from the gap 3.

[0029] The bubble bed 4 has a third chamber 41 containing a combustion aid. The third chamber 41 is connected to the gap 3 and the first chamber 11. Some fine ash and fuel particles falling from the second chamber 21 and some fuel particles in the first chamber 11 enter the third chamber 41 and are burned in the third chamber 41.

[0030] In the inclined rotating cone and bubbling bed combined burner of this embodiment, some of the fine ash and fuel particles generated by the initial fuel combustion in the rotating cone body 1 collide with the inner wall of the second chamber 21 and, after stalling, fall into the bubbling bed 4 through the gap 3. The slag, some fuel particles, and unburned initial fuel generated after the initial fuel combustion in the rotating cone body 1 can also fall into the bubbling bed 4 through the gap 3, so that the slag, unburned initial fuel, fuel particles, and fine ash can form a bed layer in the bubbling bed 4. The bed layer has a high temperature, so that the unburned initial fuel can continue to burn in the third chamber 41. Therefore, the inclined rotating cone and bubbling bed combined burner of this embodiment has high combustion efficiency, making the low-calorific-value, difficult-to-burn, and difficult-to-break initial fuel burn more completely, thus improving the overall combustion efficiency.

[0031] Furthermore, for high-calorific-value, flammable, and easily broken fuels, the inclined rotating cone and bubbling bed combined burner of this invention can also increase the burner's design thermal power by more than 30% without increasing the burner size and with a slight increase in manufacturing costs.

[0032] Specifically, the rotating cone body 1 can rotate relative to the combustion cone body 2 in a first direction, so that the initial fuel in the first chamber 11 is agitated and can come into more full contact with the combustion improver in the first chamber 11, and heat up rapidly, thereby improving the carbon conversion rate of the initial fuel.

[0033] In some embodiments, the combustion cone body 2 further includes an outer wall 23, an inner wall 24, and a fuel inlet 25. The outer wall 23 surrounds the inner wall 24, and a gap 26 is formed between the outer wall 23 and the inner wall 24. A second chamber 21 is formed within the inner wall 24, and the cross-sectional area of ​​the inner wall 24 gradually increases in a downward direction. The fuel inlet 25 communicates with the second chamber 21, and initial fuel is introduced into the second chamber 21 through the fuel inlet 25. A second air inlet 22 is located at the top of the combustion cone body 2, and combustion improver is introduced into the second chamber 21 through the second air inlet 22, spiraling down from the top of the combustion cone body 2 into the rotating cone body 1.

[0034] In some embodiments, the central axis of the rotating cone body 1 forms an angle α with the horizontal, where 35° ≤ α ≤ 45°. The central axis of the combustion cone body 2 forms an angle β with the horizontal, where 35° ≤ β ≤ 45°, and the angle difference between α and β is less than 10°.

[0035] In some embodiments, the first chamber 11 has a crusher (not shown) to crush the large, slow-reacting and difficult-to-crush initial fuel in the first chamber 11, thereby improving the contact between the combustion improver and the initial fuel and improving the carbon conversion rate of the initial fuel.

[0036] Specifically, the rotating cone body 1 has a first air inlet 15, which is located at the bottom of the rotating cone body 1 and communicates with the first chamber 11. Combustion promoter is introduced into the first chamber 11 through the first air inlet 15.

[0037] In some embodiments, the outer wall of the rotating cone body 1 has a hollow wall 12, and the hollow wall 12 contains a combustion accelerator. The outer wall of the rotating cone body 1 has a through hole 13, which communicates with the first chamber 11. The combustion accelerator in the hollow wall 12 enters the first chamber 11 through the through hole 13.

[0038] Specifically, the first air inlet 15 is connected to the hollow wall 12, so that the combustion improver can enter the first chamber 11 through the hollow wall 12 to assist combustion and blow the initial fuel in the first chamber 11, so that the initial fuel burns more completely in the first chamber 11. In addition, the combustion improver in the hollow wall 12 can also cool the rotating cone body 1.

[0039] In some embodiments, the size of the gap 3 in the first direction is 1cm to 5cm.

[0040] Specifically, if the gap 3 is too large, the fuel falling from the first chamber 11 into the bubble bed 4 will be too large, which is not conducive to the fluidized combustion of the fuel in the third chamber 41. If the gap 3 is too small, a large amount of excess fuel in the first chamber 11 cannot quickly overflow from the gap 3, occupying space in the rotating cone body 1 and reducing the fuel efficiency in the first chamber 11. Preferably, the size of the gap 3 in the first direction is 1 to 5 cm, so that the fuel in the first chamber 11 can fall into the third chamber 41 of the bubble bed 4 through the gap 3.

[0041] In some embodiments, the bubbling bed 4 further includes a third air inlet 42 and a slag outlet 43. The third air inlet 42 and the slag outlet 43 are connected to the third chamber 41. The third air inlet 42 is adapted to introduce a combustion aid into the third chamber 41 so that the fuel particles in the third chamber 41 burn in the third chamber 41. The slag outlet 43 is adapted to discharge the slag produced by the combustion of the burning particles in the third chamber 41.

[0042] Specifically, an oxidizing agent is continuously introduced into the third chamber 41 through the third air inlet 42, so that unburned fuel in the third chamber 41 can be burned again in the third chamber 41. The slag in the third chamber 41 is discharged through the slag outlet 43, which not only frees up space in the third chamber 41, but also allows the unburned fuel in the third chamber 41 to fully contact the oxidizing agent, thereby improving the carbon conversion rate.

[0043] Specifically, the cross-sectional wind speed of the bubble bed 4 is 1 m / s to 3 m / s. The cross-sectional wind speed is the air volume divided by the cross-sectional area of ​​the bubble bed 4.

[0044] In some embodiments, the third chamber 41 has a ventilation chamber 6, which is located at the bottom of the third chamber 41 and communicates with the third air inlet 42. The third air inlet 42 is adapted to introduce a combustion-supporting agent into the ventilation chamber 6. The top of the ventilation chamber 6 has a ventilator 61, which connects the ventilation chamber 6 and the third chamber 41 so that the combustion-supporting agent in the ventilation chamber 6 enters the third chamber 41 through the ventilator 61.

[0045] Specifically, the air chamber 6 is located at the bottom of the third chamber 41. The combustion-supporting agent that enters the third chamber 41 through the third air inlet 42 first enters the air chamber 6 and then is discharged through the air cap 61.

[0046] Specifically, there are multiple air caps 61, which are arranged at intervals on the top surface of the air chamber 6. The air caps 61 are located in the bed of the third chamber 41. The combustion accelerator blown out from the air caps 61 can blow the bed flow, so that the unburned fuel can come into full contact with the combustion accelerator, heat up quickly, and improve the carbon conversion rate.

[0047] In some embodiments, the top surface of the air chamber 6 is arranged at an angle, and the top surface of the air chamber 6 extends from one end (e.g., Figure 1 From the right end of the top surface of the air chamber 6 shown to the other end (as shown) Figure 1 The top surface of the air chamber 6 shown extends downward at the left end, with one end of the top surface of the air chamber 6 adjacent to the third air inlet 42 and the other end of the top surface of the air chamber 6 adjacent to the slag outlet 43.

[0048] Specifically, the top surface of the air chamber 6 is arranged to slope downwards from right to left, so that the slag formed by fuel combustion in the third chamber 41 can roll from the right end to the left end of the top surface of the air chamber 6. The slag outlet 43 is located at the left end of the air chamber 6 and is connected to the top surface of the air chamber 6, so that the slag located at the left end of the top surface of the air chamber 6 can be easily discharged through the slag outlet 43.

[0049] In some embodiments, the number of wind caps 61 at the left end of the top surface of the wind chamber 6 is greater than the number of wind caps 61 at the right end of the top surface of the wind chamber 6, so that the fuel rolling from the right end of the top surface of the wind chamber 6 to its left end is fully burned.

[0050] In some embodiments, the bubbling bed 4 also has an observation hole 44, in which fuel particles in the third chamber 41 are burned to generate a bed layer, and the observation hole 44 is used to observe the thickness of the bed layer.

[0051] Specifically, the bubbling bed 4 has observation holes 44 on its side, and there are 2 to 4 observation holes 44. The observation holes 44 are arranged at intervals in the left-right direction, and the thickness of the bed layer in the third chamber 41 is observed through the observation holes 44. When the bed layer in the third chamber 41 is higher than the observation holes 44, the slag outlet 43 is opened to discharge slag.

[0052] In some embodiments, the rotating cone body 1 includes a grate (not shown), at least two grates are arranged at intervals along a first direction, and there is a gap (not shown) between adjacent grates. The size of the gap in the first direction is 1 cm to 2 cm. The gap communicates with a third chamber 41, and fuel particles in the first chamber 11 can fall into the third chamber 41 through the gap.

[0053] Specifically, the rotating cone body 1 also includes a support ring 16, a support arm 17, a cone apex 18, and a hanging grate rod 19. There are multiple support rings 16, spaced apart in the vertical direction, with their central axes collinear, and the cross-sectional area of ​​each support ring 16 gradually decreasing downwards. Multiple support arms 17 are mounted on the support rings 16, spaced around the outer wall of the support ring 16.

[0054] There are multiple grate rods 19, which are divided into multiple groups. The multiple groups of grate rods 19 are arranged at intervals in the vertical direction, and the multiple groups of grate rods 19 are alternately arranged with multiple support rings 16. Each group of grate rods 19 includes at least one grate rod 19. At least two grates are detachably installed on the grate rods 19 to prevent thermal expansion at high temperatures during operation.

[0055] The cone top 18 is located on the uppermost support ring 16, and the cone top 18 is connected to the combustion cone body 2.

[0056] In some embodiments, the support ring 16 includes at least two sub-support segments (not shown) to prevent thermal expansion at high temperatures during operation.

[0057] In some embodiments, the rotating cone body 1 further has a first opening 14, which communicates with the first chamber 11 and the gap 3. The rotating cone body 1 also includes crushing teeth 5, which are disposed on the wall surface of the first opening 14 adjacent to the gap 3 and are arranged at circumferential intervals along the first opening 14. The crushing teeth 5 are used to crush fuel particles in the gap 3.

[0058] Specifically, the first opening 14 is located at the cone apex 18 and communicates with the first chamber 11 and the gap 3. The crushing teeth 5 are arranged circumferentially on the wall of the first opening 14 to crush fuel particles stuck in the gap 3 and prevent blockage.

[0059] In some embodiments, the inclined rotating cone and bubbling bed combined burner also includes a housing 7, which is arranged around the outer wall of the rotating cone body 1, communicates with the gap 3, is detachably connected to the bubbling bed 4, and communicates with the third chamber 41.

[0060] Specifically, the housing 7 is connected to the gap 3 to prevent fuel falling through the gap 3 from falling outside the bubbling bed 4 and causing waste. The bubbling bed 4 is detachably connected to the housing 7, and the observation hole 44 on the bubbling bed 4 is arranged adjacent to the housing 7.

[0061] Specifically, the third chamber 41 is under positive pressure, and the connection between the bubble bed 4 and the casing 7 should be one that is resistant to high temperatures and ensures airtightness.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A combined tangentially fired conical and bubbling bed combustor characterized by, include: A rotating cone body (1) having a first chamber (11) containing initial fuel and combustion accelerator, wherein the initial fuel and combustion accelerator burn within the first chamber (11); The combustion cone body (2) has a second chamber (21) and a second air inlet (22), the second air inlet (22) being connected to the second chamber (21) and adapted to introduce an accelerant into the second chamber (21). There is a gap (3) between the first chamber (11) and the second chamber (21), and the gap (3) communicates with the first chamber (11) and the second chamber (21). The combustible gas, fine ash and small unburned fuel particles generated by the initial fuel combustion in the first chamber (11) are carried out of the first chamber (11) and into the second chamber (21) by the swirling flow formed by the combustion aid entering from the second air inlet (22). Some of the fine ash and fuel particles collide with the inner wall of the second chamber (21), lose speed and fall out from the gap (3). Bubble bed (4), the bubble bed (4) has a third chamber (41), the third chamber (41) contains a combustion aid, the third chamber (41) is connected to the gap (3), the first chamber (11) and the second chamber (21), some fine ash and fuel particles falling from the second chamber (21) and some fuel particles in the first chamber (11) enter the third chamber (41) and are burned in the third chamber (41); The bubbling bed (4) also has a third air inlet (42) and a slag outlet (43), which are connected to the third chamber (41). The third air inlet (42) is adapted to introduce a combustion aid into the third chamber (41) so that the fuel particles in the third chamber (41) burn in the third chamber (41). The slag outlet (43) is adapted to discharge the slag produced by the combustion of the burning particles in the third chamber (41). The third chamber (41) has a wind chamber (6) located at the bottom of the third chamber (41) and connected to the third air inlet (42). The third air inlet (42) is adapted to introduce combustion-supporting agent into the wind chamber (6). The top of the wind chamber (6) has a wind cap (61) connected to the wind chamber (6) and the third chamber (41) so that the combustion-supporting agent in the wind chamber (6) enters the third chamber (41) through the wind cap (61).

2. The combined tangentially fired conical and bubbling fluidized bed combustor of claim 1 wherein, The gap (3) has a size of 1cm to 5cm in the first direction, which is the axial direction of the rotating cone body (1).

3. The combined tangentially fired conical and bubbling fluidized bed combustor of claim 1 wherein, The top surface of the air chamber (6) is arranged at an angle, and the top surface of the air chamber (6) extends downward at an angle from one end to the other end. One end of the top surface of the air chamber (6) is adjacent to the third air inlet (42), and the other end of the top surface of the air chamber (6) is adjacent to the slag outlet (43).

4. The combined tangentially fired conical and bubbling fluidized bed combustor of claim 1 wherein, The bubbling bed (4) also has an observation hole (44), in which fuel particles in the third chamber (41) are burned to generate a bed layer, and the observation hole (44) is used to observe the thickness of the bed layer.

5. The combined tangentially fired conical and bubbling fluidized bed combustor of claim 1 wherein, The rotating cone body (1) includes a grate, at least two grates are arranged at intervals along a first direction, and there is a gap between adjacent grates. The size of the gap in the first direction is 1cm to 2cm. The gap communicates with the third chamber (41), and fuel particles in the first chamber (11) can fall into the third chamber (41) through the gap.

6. The combined tangentially fired conical and bubbling fluidized bed combustor of claim 1 wherein, The rotating cone body (1) also has a first opening (14), which communicates with the first chamber (11) and the gap (3). The rotating cone body (1) also includes crushing teeth (5), which are disposed on the wall surface of the first opening (14) adjacent to the gap (3) and are arranged circumferentially along the first opening (14). The crushing teeth (5) are used to crush fuel particles in the gap (3).

7. The inclined rotating cone and bubbling bed combined burner according to claim 1, characterized in that, The outer wall of the rotating cone body (1) has a hollow wall (12), and the hollow wall (12) contains a combustion-supporting agent. The outer wall of the rotating cone body (1) has a through hole (13), which communicates with the first chamber (11). The combustion-supporting agent in the hollow wall (12) enters the first chamber (11) through the through hole (13).

8. The inclined rotating cone and bubbling bed combined burner according to claim 1, characterized in that, It also includes a housing (7), which is arranged around the outer wall of the rotating cone body (1), the housing (7) is connected to the gap (3), the housing (7) is detachably connected to the bubble bed (4), and the housing (7) is connected to the third chamber (41).

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