Combustor

Abstract

The application discloses a combustor, which comprises a shell, a combustion cone assembly and a secondary combustion cone. The combustion cone assembly is connected with the shell and comprises a rotary cone and a powder fuel inlet pipe. The rotary cone is rotatably arranged in the shell and has a combustion cavity. One end of the powder fuel inlet pipe is located outside the shell, and the other end extends into the combustion cavity. The secondary combustion cone has an exhaust passage communicated with the combustion cavity. The secondary combustion cone comprises a first combustion cone and a second combustion cone. The first combustion cone is arranged on the shell. The part of the first combustion cone located outside the shell is provided with a block fuel inlet communicated with the exhaust passage. The second combustion cone is connected with the end of the first combustion cone away from the shell. The second combustion cone is provided with a nozzle communicated with the exhaust passage. The secondary combustion cone of the combustor can cooperate with the stable high-temperature flue gas flow provided by the synergistic combustion of block garbage and powder garbage to harmlessly treat the landfill leachate, so that the landfill leachate treatment cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste incineration treatment, in particular to a combustor. BACKGROUND

[0002] During the stacking process of waste, atmospheric precipitation (rain and snow) falls on the waste, in addition, the waste itself has moisture, and the biochemical decomposition of organic matter in the waste also produces water, which becomes sewage after leaching through the waste, also known as waste leachate.

[0003] In the related art, waste leachate usually needs to be treated by special sewage treatment equipment in a waste treatment plant, which increases the operating cost of waste treatment. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a combustor, which can use the stable high-temperature flue gas flow provided by the collaborative combustion of block-shaped waste and powder waste to harmlessly treat waste leachate, avoid adding sewage treatment equipment in the waste treatment plant, and reduce the operating cost of waste treatment.

[0005] The combustor of the present application comprises: a shell; a combustion cone assembly connected with the shell, and the combustion cone assembly comprises a rotating cone and a powder fuel inlet pipe, the rotating cone is rotatably arranged in the shell and has a combustion chamber, one end of the powder fuel inlet pipe is located outside the shell, and the other end extends into the combustion chamber; a secondary combustion cone, the secondary combustion cone has an exhaust passage communicating with the combustion chamber, and the secondary combustion cone comprises a first combustion cone and a second combustion cone, the first combustion cone is arranged on the shell, and the part of the first combustion cone located outside the shell is provided with a block-shaped fuel inlet communicating with the exhaust passage, the second combustion cone is connected to the end of the first combustion cone away from the shell, and the second combustion cone is provided with a nozzle communicating with the exhaust passage, the nozzle is adapted to spray waste leachate into the exhaust passage.

[0006] According to the combustor, the combustion cone assembly is connected with the shell, and the combustion cone assembly comprises a rotary cone and a powder fuel feeding pipe, the rotary cone is rotatably arranged in the shell and has a combustion chamber, one end of the powder fuel feeding pipe is located outside the shell, and the other end extends into the combustion chamber, the secondary combustion cone has an exhaust passage communicated with the combustion chamber, and the secondary combustion cone comprises a first combustion cone and a second combustion cone, the first combustion cone is arranged on the shell, and the part of the first combustion cone located outside the shell is provided with a block fuel inlet communicated with the exhaust passage, the second combustion cone is connected to the end of the first combustion cone away from the shell, and the second combustion cone is provided with a nozzle communicated with the exhaust passage, and the nozzle is adapted to spray the leachate into the exhaust passage, so that in the combustor, the powder garbage can be transported into the combustion chamber of the rotary cone by the powder fuel feeding pipe, and the block garbage can fall into the combustion chamber of the rotary cone through the block fuel inlet and the exhaust passage, so that the block garbage and the powder garbage can be combusted in the combustion chamber, and the misty leachate sprayed by the nozzle can be heated at high temperature by the high-temperature flue gas flow generated by the combustion of the block garbage and the powder garbage, so that the organic matter or harmful and toxic substances in the leachate are decomposed, the harmless incineration treatment of the leachate is realized, the sewage treatment equipment needs not to be additionally arranged in the garbage treatment plant, and the operation cost of garbage treatment is reduced.

[0007] In some embodiments, the cross section of the exhaust passage of the first combustion cone gradually decreases in the direction away from the shell, and the cross section of the exhaust passage of the second combustion cone gradually increases in the direction away from the shell.

[0008] In some embodiments, the secondary combustion cone is further provided with a first igniter and a second igniter, the first igniter is arranged in the first combustion cone, and the first igniter is adjacent to the block fuel inlet, the second igniter is arranged in the second combustion cone, and the second igniter is adjacent to the nozzle.

[0009] In some embodiments, the central axis of the powder fuel feeding pipe is collinear with the central axis of the rotary cone, and the outer wall of the part of the powder fuel feeding pipe located in the combustion chamber is provided with the air permeable hole.

[0010] In some embodiments, the powder fuel feeding pipe comprises an inner pipe and an outer pipe, the outer pipe is annularly arranged outside the inner pipe and forms a cold air chamber with the inner pipe, one end of the cold air chamber located outside the shell is provided with a cold air inlet, and the inner pipe and the outer pipe are both provided with the air permeable hole.

[0011] In some embodiments, the burner further comprises an air distribution assembly, the rotating cone has a plurality of air outlet pipes arranged along the circumferential direction thereof, the air outlet pipes are connected to the air distribution assembly, the air outlet pipes are provided with the air outlet holes, and the rotating cone further comprises a plurality of hoop plates arranged along the extension direction of the central axis thereof, the hoop plates are arranged around the outer periphery of the air outlet pipes.

[0012] In some embodiments, the air distribution assembly comprises an air distribution box, the air distribution box is rotatably arranged on the shell through a bearing, and the air distribution box is provided with a plurality of first connecting holes on the inner plate thereof facing the rotating cone, one end of the air outlet pipes is correspondingly arranged in the first connecting holes, and the powder fuel inlet pipe is arranged on the air distribution box.

[0013] In some embodiments, the air distribution assembly further comprises a pressing disc and a plurality of air inlet pipes arranged on the pressing disc, the outer plate of the air distribution box is provided with a plurality of second connecting holes opposite to the first connecting holes, and the pressing disc is pressed on the outer plate of the air distribution box through an elastic member and the air inlet pipes are opposite to the second connecting holes.

[0014] In some embodiments, one end of the rotating cone away from the air distribution box is provided with an open hole communicating with the exhaust channel, the open hole is open towards the obliquely upward direction, and the secondary combustion cone extends along the opening direction of the open hole.

[0015] In some embodiments, the burner further comprises a slag discharge assembly, the slag discharge assembly comprises a screw conveying shaft and a driving member, the shell is provided with a slag discharge cavity for mounting the screw conveying shaft, the slag discharge cavity communicates with the combustion cavity, and the slag discharge cavity is provided with a slag discharge port, and the driving member can drive the screw conveying shaft to rotate, and the rotation of the screw conveying shaft can convey the ash and slag discharged from the combustion cavity to the slag discharge port. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of a burner according to an embodiment of the present application.

[0017] REFERENCE NUMERALS:

[0018] Shell 1, combustion cone assembly 2, rotating cone 21, air outlet pipe 211, powder fuel inlet pipe 22, air permeable hole 221, inner pipe 222, outer pipe 223, secondary combustion cone 3, first combustion cone 31, second combustion cone 32, block fuel inlet 33, nozzle 34, first igniter 35, second igniter 36, air distribution assembly 4, air distribution box 41, pressing disc 42, air inlet pipe 43, bearing 44, slag discharge assembly 5, screw conveying shaft 51, slag discharge port 52. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the attached drawing figures are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0020] As shown in the drawings, the combustor of the embodiments of the present application comprises a shell 1, a combustion cone assembly 2 and a secondary combustion cone 3, Figure 1 Specifically, the combustion cone assembly 2 is connected with the shell 1, and the combustion cone assembly 2 comprises a rotary cone 21 and a powder fuel inlet pipe 22, the rotary cone 21 is rotatably arranged in the shell 1 and has a combustion chamber, one end of the powder fuel inlet pipe 22 is located outside the shell 1, and the other end extends into the combustion chamber, the secondary combustion cone 3 has an exhaust passage in communication with the combustion chamber, and the secondary combustion cone 3 comprises a first combustion cone 31 and a second combustion cone 32, the first combustion cone 31 is arranged through the shell 1, and the part of the first combustion cone 31 located outside the shell 1 is provided with a block fuel inlet 33 in communication with the exhaust passage, the second combustion cone 32 is connected to the end of the first combustion cone 31 away from the shell 1, and the second combustion cone 32 is provided with a nozzle 34 in communication with the exhaust passage, and the nozzle 34 is adapted to spray the leachate into the exhaust passage.

[0021] In other words, in the combustor of the present application, the powder garbage can be transported by the powder fuel inlet pipe 22 into the combustion chamber of the rotary cone 21 under the driving of the air blowing device, and the block garbage can be dropped into the combustion chamber of the rotary cone 21 through the exhaust passage by the block fuel inlet 33, so that the powder garbage and the block garbage can be combusted cooperatively, the garbage treatment efficiency is improved without increasing the treatment capacity of the combustor, and at the same time, the high-temperature flue gas stream can be stably provided for the secondary combustion cone 3, the high-temperature flue gas stream first preheats the block garbage input by the block fuel inlet 33 in the first combustion cone 31, and then heats the misty leachate sprayed by the nozzle 34 in the second combustion cone 32, so as to decompose the organic matter or harmful and toxic substances in the leachate, and realize the harmless incineration treatment of the leachate, so that in the combustor of the present application, the leachate is treated harmlessly by the high-temperature flue gas stream generated by the cooperative combustion of the block garbage and the powder garbage in the secondary combustion cone 3, and the sewage treatment device is not needed to be added in the garbage treatment plant, and the operation cost of garbage treatment is reduced.

[0022]

[0023] ​It can be understood that in the combustor of the present application, when the calorific value of the powder garbage is low, the block-shaped garbage with higher calorific value can be introduced into the combustion chamber for collaborative combustion, and vice versa, when the calorific value of the block-shaped garbage is low, the powder garbage with higher calorific value can be introduced into the combustion chamber for collaborative combustion, thereby the fuel with higher calorific value can provide combustion-supporting effect for the fuel with lower calorific value, thereby improving the reliability of the combustor of the present application for incineration treatment of low-calorific-value garbage, and ensuring that the high-temperature flue gas flow can be stably supplied to the secondary combustion cone 3.

[0024] According to the combustor of the embodiment of the present application, the combustion cone assembly is connected with the shell, and the combustion cone assembly comprises a rotary cone and a powder fuel introduction pipe, the rotary cone is rotatably arranged in the shell and has a combustion chamber, one end of the powder fuel introduction pipe is located outside the shell, and the other end extends into the combustion chamber, the secondary combustion cone has an exhaust passage communicated with the combustion chamber, and the secondary combustion cone comprises a first combustion cone and a second combustion cone, the first combustion cone is arranged on the shell, and the part of the first combustion cone located outside the shell is provided with a block-shaped fuel inlet communicated with the exhaust passage, the second combustion cone is connected to the end of the first combustion cone away from the shell, and the second combustion cone is provided with a nozzle communicated with the exhaust passage, the nozzle is adapted to spray garbage leachate into the exhaust passage, thereby in the combustor of the present application, the powder garbage can be transported to the combustion chamber of the rotary cone by the powder fuel introduction pipe, and the block-shaped garbage can fall into the combustion chamber of the rotary cone through the exhaust passage by the block-shaped fuel inlet, so that the block-shaped garbage and the powder garbage can be collaboratively combusted in the combustion chamber, and the secondary combustion cone can heat the misty garbage leachate sprayed by the nozzle by means of the high-temperature flue gas flow generated by the collaborative combustion of the block-shaped garbage and the powder garbage, decompose the organic matter or harmful and toxic substances in the garbage leachate, realize harmless incineration treatment of the garbage leachate, avoid adding sewage treatment equipment in the garbage treatment plant, and reduce the operation cost of garbage treatment.

[0025] Further, as shown in Figure 1 the cross section of the exhaust passage of the first combustion cone 31 gradually decreases in the direction away from the shell 1, and the cross section of the exhaust passage of the second combustion cone 32 gradually increases in the direction away from the shell 1.

[0026] In other words, the first combustion cone 31 has a conical exhaust passage gradually decreasing towards the second combustion cone 32, and the second combustion cone 32 has a conical exhaust passage gradually decreasing towards the first combustion cone 31, thereby the high-temperature flue gas flow is discharged into the second combustion cone 32 after being throttled and accelerated in the first combustion cone 31, so as to reduce the heat loss of the high-temperature flue gas flow in the first combustion cone 31, and ensure that the temperature of the high-temperature flue gas flow introduced into the second combustion cone 32 meets the garbage leachate treatment requirement, in the second combustion cone 32, the high-temperature flue gas flow is decelerated due to the expansion flow, so as to maximize the contact time with the garbage leachate spray, and ensure complete treatment of the garbage leachate.

[0027] Preferably, the spraying cycle of the landfill leachate can be controlled by the nozzle 34, so that the landfill leachate is intermittently sprayed into the secondary combustion cone 3, avoiding the landfill leachate being sprayed too much into the secondary combustion cone 3 which cannot be processed in time.

[0028] Further, as shown in the figure, Figure 1 The secondary combustion cone 3 is also provided with a first igniter 35 and a second igniter 36, the first igniter 35 is arranged in the first combustion cone 31, and the first igniter 35 is adjacent to the block fuel inlet 33, and the second igniter 36 is arranged in the second combustion cone 32, and the second igniter 36 is adjacent to the nozzle 34.

[0029] It can be understood that the added first igniter 35 and second igniter 36 increase the fire source in the secondary combustion cone 3, when the high-temperature flue gas flow supplied by the combustion chamber into the exhaust passage is unstable, the first igniter 35 can be turned on to pre-burn the block fuel, or the second igniter 36 can be turned on to directly decompose the landfill leachate sprayed by the nozzle 34, thereby relieving the pressure of the landfill leachate on the burner when the high-temperature flue gas flow supply is insufficient, and improving the applicability of the burner of the present application.

[0030] Further, as shown in the figure, Figure 1 The center axis of the powder fuel inlet pipe 22 is collinear with the center axis of the rotating cone 21, and the outer wall of the part of the powder fuel inlet pipe 22 located in the combustion chamber is provided with air holes 221, that is, the powder fuel inlet pipe 22 is coaxial with the rotating shaft of the rotating cone 21, and the rotating shaft can rotate around the powder fuel inlet pipe 22.

[0031] It can be understood that the combustion of the block fuel in the rotating cone 21 and the powder fuel in the powder fuel inlet pipe 22 will respectively generate hot gas flow, and the calorific value of the fuel is different, and the hot gas flow generated by the combustion is also different in temperature, when the rotating cone 21 rotates, under the action of centrifugal force, the hot gas flow generated by the powder fuel will overflow from the air holes 221 and swirl mix with the hot gas flow generated by the block fuel, and the mixed swirl gas flow can increase the temperature in the combustion chamber, so that the temperature in the combustion chamber meets the ignition point of low-calorific-value fuel, and ensures that low-calorific-value garbage can be stably burned.

[0032] Further, as shown in the figure, Figure 1 The powder fuel inlet pipe 22 includes an inner pipe 222 and an outer pipe 223, the outer pipe 223 is arranged in a ring on the outside of the inner pipe 222 and surrounds a cold air chamber with the inner pipe 222, one end of the cold air chamber located outside the shell 1 has a cold air inlet, and the inner pipe 222 and the outer pipe 223 both have air holes 221.

[0033] It can be understood that the cold air flow can be introduced from the shell 1 into the cold air cavity to cool the inner tube 222 and the outer tube 223 of the powder fuel feeding pipe 22 at the same time, and then the cold air flow is changed into a hot air flow and discharged into the combustion cavity through the air holes 221, thereby improving the durability of the powder fuel feeding pipe 22.

[0034] Further, as shown in Figure 1 The burner further comprises an air distribution assembly 4, the rotating cone 21 has a plurality of air outlet pipes 211 arranged at intervals along the circumference thereof, the plurality of air outlet pipes 211 are connected with the air distribution assembly 4, the air outlet pipes 211 are provided with air outlet holes, and the rotating cone 21 further comprises a plurality of hoop plates (not shown) arranged at intervals along the extension direction of the central axis thereof, the hoop plates surround the outer periphery of the plurality of air outlet pipes 211.

[0035] In other words, the air outlet pipes 211 cooperate with the hoop plates to form a mesh frame-shaped cone wall of the rotating cone 21, at this time, the flow channel of the air outlet pipes 211 can be used as an air inlet cavity for feeding primary air into the combustion cavity, and the hoop plates sequentially connect the plurality of air outlet pipes 211 in the form of a ring plate, thereby improving the structural strength of the rotating cone 21 and ensuring the durability of the rotating cone 21, and at the same time, the primary air fed into the combustion cavity cooperates with the rotating action of the rotating cone 21 to make the fuel in a fluidized combustion state, thereby making the fuel fully burn and improving the efficiency of waste incineration.

[0036] It can be understood that the circumferentially arranged air outlet pipes 211 optimize the distribution of primary air, which can make the primary air uniformly act on the fuel combustion and ensure that the waste is fully burned.

[0037] Preferably, a grid can be arranged in the mesh frame formed by the air outlet pipes 211 and the hoop plates, thereby avoiding that unburned waste falls from the mesh frame and ensuring that the waste is fully burned.

[0038] Further, as shown in Figure 1 The air distribution assembly 4 comprises an air distribution box 41, the air distribution box 41 is rotatably arranged on the shell 1 through a bearing 44, and a plurality of first butt joints are arranged on the inner plate of the rotating cone 21 towards the air distribution box 41, one end of the plurality of air outlet pipes 211 corresponds to the plurality of first butt joints, and the powder fuel feeding pipe 22 is arranged on the air distribution box 41.

[0039] It can be understood that the air distribution box 41 is connected with the combustion cone through the air outlet pipes 211, thereby the air distribution box 41 and the combustion cone realize synchronous rotation, and the sufficient supply of primary air is ensured.

[0040] Alternatively, the powder fuel feeding pipe 22 should be rotatably connected with the air distribution box 41, or a through hole is arranged at the central axis of the air distribution box 41 for the powder fuel feeding pipe 22 to pass through, thereby avoiding that the rotation of the air distribution box 41 is hindered due to the arrangement of the powder fuel feeding pipe 22.

[0041] Further, as shown in Figure 1 The air distribution assembly 4 further comprises a pressing disc 42 and a plurality of air inlet pipes 43 penetrating the pressing disc 42. The air distribution box 41 is provided with a plurality of second connecting holes opposite to the first connecting holes on the outer plate of the rotating cone 21. The pressing disc 42 is pressed on the outer plate of the air distribution box 41 by the elastic member, and the plurality of air inlet pipes 43 are opposite to the plurality of second connecting holes.

[0042] In other words, on the side of the air distribution box facing the rotating cone 21, the air distribution box is integrated with the rotating cone 21 through the air outlet pipes 211 penetrating the first connecting holes, and the air distribution box rotates together with the rotating cone 21. On the other side of the air distribution box away from the rotating cone 21, the elastic member abuts the pressing disc 42 against the air distribution box. Therefore, the air inlet pipes 43 are rotatably and sealingly connected with the air distribution box. That is, the flow passages in the air inlet pipes 43 intermittently communicate with the second connecting holes, thereby minimizing the loss of primary air and improving the utilization rate of primary air.

[0043] It should be noted that the elastic member always abuts the pressing disc 42 against the air distribution box. During this process, the air inlet pipe cannot move with the pressing disc 42. Therefore, a limiting clamping groove can be provided on the pressing disc 42. The air inlet pipe 43 is fitted in the limiting clamping groove through the limiting protrusion. Therefore, the air inlet pipe 43 has a certain amount of movement relative to the pressing disc 42, which avoids the air inlet pipe 43 from being pulled out of the pressing disc 42 during the pressing process.

[0044] Further, as shown in Figure 1 The end of the rotating cone 21 away from the air distribution box 41 has an open hole communicating with the exhaust passage. The open hole is open towards the obliquely upward direction, and the secondary combustion cone 3 extends along the opening direction of the open hole.

[0045] In other words, the exhaust passage is a lower oblique straight passage leading to the open hole. The block fuel can quickly slide down from the exhaust passage to the open hole and then enter the combustion chamber, thereby avoiding blockage in the exhaust passage and improving the input efficiency of the block fuel.

[0046] Further, as shown in Figure 1 The burner further comprises a slag discharge assembly 5. The slag discharge assembly 5 comprises a spiral conveying shaft 51 and a driving member (not shown). The housing 1 has a slag discharge cavity for mounting the spiral conveying shaft 51. The slag discharge cavity communicates with the combustion chamber and has a slag discharge port 52. The driving member can drive the spiral conveying shaft 51 to rotate. The rotation of the spiral conveying shaft 51 can convey the ash and slag discharged from the combustion chamber to the slag discharge port 52 for discharge.

[0047] It can be understood that the slag discharge cavity can be arranged below the rotating cone 21. Therefore, during the incineration of the garbage, the ash and slag generated by the combustion of the garbage in the combustion chamber will fall from the rotating cone 21 to the slag discharge cavity for discharge, thereby avoiding excessive accumulation of ash and slag in the housing 1, which affects the flow of high-temperature flue gas.

[0048] Optionally, the driving member can be a rotating handle which is installed outside the shell 1 and connected with the screw conveying shaft 51, and rotating the rotating handle can drive the screw conveying shaft 51 to rotate, thereby facilitating the operator to timely perform the slagging operation and ensuring the normal operation of the burner.

[0049] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0053] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0054] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A burner, characterized in that, include: case; A combustion cone assembly is connected to the housing, and the combustion cone assembly includes a rotating cone and a powdered fuel inlet pipe. The rotating cone is rotatably disposed inside the housing and has a combustion chamber. One end of the powdered fuel inlet pipe is located outside the housing, and the other end extends into the combustion chamber. A secondary combustion cone has an exhaust channel communicating with the combustion chamber, and the secondary combustion cone includes a first combustion cone and a second combustion cone. The first combustion cone passes through the housing, and the portion of the first combustion cone located outside the housing has a block fuel inlet communicating with the exhaust channel. The second combustion cone is connected to the end of the first combustion cone away from the housing, and the second combustion cone has a nozzle communicating with the exhaust channel. The nozzle is adapted to inject leachate into the exhaust channel. An air distribution assembly includes an air distribution box, a pressure plate, and multiple air inlet pipes passing through the pressure plate. The air distribution box is rotatably mounted on the housing via bearings, and the inner plate of the air distribution box facing the rotating cone has multiple first mating holes. The outer plate of the air distribution box away from the rotating cone has multiple second mating holes opposite to the first mating holes. The pressure plate is pressed against the outer plate of the air distribution box by an elastic element, and the multiple air inlet pipes are opposite to the multiple second mating holes.

2. The burner according to claim 1, characterized in that, The cross-section of the exhaust passage of the first combustion cone gradually decreases in the direction away from the housing, while the cross-section of the exhaust passage of the second combustion cone gradually increases in the direction away from the housing.

3. The burner according to claim 2, characterized in that, The secondary combustion cone is further provided with a first igniter and a second igniter. The first igniter is located inside the first combustion cone and is adjacent to the block fuel inlet. The second igniter is located inside the second combustion cone and is adjacent to the nozzle.

4. The burner according to claim 1, characterized in that, The central axis of the powder fuel inlet pipe is collinear with the central axis of the rotating cone, and the outer wall of the portion of the powder fuel inlet pipe located inside the combustion chamber is provided with vent holes.

5. The burner according to claim 4, characterized in that, The powder fuel inlet pipe includes an inner pipe and an outer pipe. The outer pipe is spaced around the outside of the inner pipe and forms a cold air cavity with the inner pipe. The cold air cavity has a cold air inlet at one end outside the shell. Both the inner pipe and the outer pipe have the vent hole.

6. The burner according to claim 3, characterized in that, The rotating cone has a plurality of air outlet pipes arranged at intervals along its circumference, and the plurality of air outlet pipes are connected to the air distribution assembly. The air outlet pipes are provided with air outlet holes. The rotating cone also includes a plurality of hoop plates arranged at intervals along the extension direction of its central axis, and the hoop plates surround the outer periphery of the plurality of air outlet pipes.

7. The burner according to claim 6, characterized in that, One end of each of the multiple air outlet pipes facing the air distribution box is correspondingly inserted into one of the multiple first docking holes, and the powder fuel inlet pipe is inserted into the air distribution box.

8. The burner according to claim 7, characterized in that, The rotating cone has an open end away from the gas distribution box that communicates with the exhaust passage. The open end faces obliquely upward, and the secondary combustion cone extends along the opening direction of the open end.

9. The burner according to any one of claims 1-8, characterized in that, It also includes a slag discharge assembly, which includes a screw conveyor shaft and a drive component. The housing has a slag discharge chamber for mounting the screw conveyor shaft. The slag discharge chamber is connected to the combustion chamber and has a slag outlet. The drive component can drive the screw conveyor shaft to rotate. The rotation of the screw conveyor shaft can transport the ash and slag discharged from the combustion chamber to the slag outlet for discharge.

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