burner

Abstract

The present invention discloses a burner, which includes a shell, a combustion cone assembly and a secondary combustion cone. The combustion cone assembly is connected to the shell, and the combustion cone assembly includes 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. The secondary combustion cone is penetrated by the shell, and the secondary combustion cone has an exhaust passage connected to the fuel chamber. The portion of the secondary combustion cone located outside the shell is provided with a block fuel inlet connected to the exhaust passage. The burner of the present invention can co-combust block waste with a lower calorific value and powder waste with a higher calorific value, or co-combust block waste with a higher calorific value and powder waste with a lower calorific value, thereby improving the stability of the incineration treatment of low calorific value waste and improving the waste treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion and utilization of solid fuel and solid combustible waste, and in particular to a burner. Background Art

[0002] The waste generated in human daily life or industrial production is large in quantity and complex in composition. If it is not properly handled, it will seriously pollute the environment. At present, incineration is an effective way to treat waste. After the waste is treated by incineration, the volume reduction effect is significant. It can not only save a lot of landfill space and eliminate various pathogens, but also convert the internal energy of the waste into heat energy or electricity, etc., to achieve energy recovery and utilization. Therefore, incineration is a waste treatment technology widely adopted by countries around the world.

[0003] Waste is usually put into a burner for incineration. However, in the related art, the burner has low efficiency when processing waste with low calorific value and cannot be burned stably. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a burner in response to the defects and shortcomings of the existing technology, which can co-burn lump waste with lower calorific value with powdered waste with higher calorific value, or co-burn lump waste with higher calorific value with powdered waste with lower calorific value, thereby improving the stability of the incineration treatment of low calorific value waste and improving the waste treatment efficiency.

[0005] The burner of an embodiment of the present invention includes: a shell; a combustion cone assembly, which is connected to the shell and includes a rotating cone and a powdered fuel inlet pipe, the rotating cone is rotatably arranged in the shell and has a combustion chamber, one end of the powdered 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 is passed through the shell, and the secondary combustion cone has an exhaust channel connected to the fuel chamber, and the part of the secondary combustion cone located outside the shell is provided with a block fuel inlet connected to the exhaust channel.

[0006] According to the burner of an embodiment of the present invention, the combustion cone assembly is connected to the shell, and the combustion cone assembly includes a rotating cone and a powdered fuel inlet pipe. The rotating cone is rotatably arranged in the shell and has a combustion chamber. One end of the powdered fuel inlet pipe is located outside the shell, and the other end extends into the combustion chamber. The secondary combustion cone is penetrated by the shell, and the secondary combustion cone has an exhaust channel connected to the fuel chamber. The part of the secondary combustion cone located outside the shell is provided with a block fuel inlet connected to the exhaust channel. Thus, the powdered waste can be transported to the combustion chamber of the rotating cone by the powdered fuel inlet pipe under the drive of the blowing device, and the block waste can fall into the combustion chamber of the rotating cone through the exhaust channel from the block fuel inlet, so that the block waste with lower calorific value can be synergistically burned with the powdered waste with higher calorific value, or the block waste with higher calorific value can be synergistically burned with the powdered waste with lower calorific value. The fuel with higher calorific value can provide a combustion-supporting effect for the fuel with lower calorific value, thereby improving the stability of the incineration treatment of low calorific value waste and improving the waste treatment efficiency.

[0007] In addition, compared with the burners in traditional technologies, the burner of the present application can be used to separately treat bulk waste and powdered waste without increasing the burner processing capacity. At the same time, it can also realize the coordinated integrated combustion of bulk waste and powdered waste, thereby reducing other waste treatment equipment added due to the treatment of different wastes and saving waste treatment costs.

[0008] In some embodiments, the central axis of the pulverized fuel inlet tube is collinear with the midline axis of the rotating cone.

[0009] In some embodiments, an outer wall of the portion of the pulverized fuel inlet pipe located in the combustion chamber is provided with air holes.

[0010] In some embodiments, the powdered fuel inlet pipe includes an inner tube and an outer tube, the outer tube spacer ring is arranged on the outside of the inner tube and forms a cold air cavity with the inner tube, the cold air cavity is located at one end outside the shell and has a cold air inlet, and the inner tube and the outer tube both have the air vent.

[0011] In some embodiments, the burner further includes an air intake assembly, the rotating cone has an air intake cavity, the rotating cone has a plurality of air outlet holes arranged at intervals along its circumference, the air outlet holes are connected to the air intake cavity, and the air intake assembly is connected to the air intake cavity to supply air to the air intake cavity.

[0012] In some embodiments, the rotating cone has a plurality of air outlet pipes arranged at intervals along its circumference, and the plurality of air outlet pipes are all connected to the air inlet assembly, and the air outlet pipes are provided with the 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 circumference of the plurality of air outlet pipes.

[0013] In some embodiments, the air intake assembly includes an air distribution box, which is rotatably mounted on the housing via a bearing, the air outlet pipe is connected to the air distribution box, and the powdered fuel inlet pipe is mounted on the air distribution box.

[0014] In some embodiments, the air intake assembly also includes a compression plate and a plurality of ventilation pipes passed through the compression plate. A plurality of first docking holes are provided on the inner plate of the air distribution box facing the rotating cone, and a plurality of the exhaust pipes are correspondingly passed through the plurality of first docking holes at one end facing the air distribution box. A plurality of second docking holes opposite to the first docking holes are provided on the outer plate of the air distribution box facing away from the rotating cone. The compression plate is pressed against the outer plate of the air distribution box by an elastic member and the plurality of ventilation pipes are opposite to the plurality of second docking holes.

[0015] In some embodiments, the end of the rotating cone away from the gas distribution box has an open port connected to the exhaust channel, the open port is open obliquely upward, and the secondary combustion cone extends along the opening direction of the open port.

[0016] In some embodiments, the block fuel inlet is located on a top wall of the secondary combustion cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a burner according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] Shell 1, combustion cone assembly 2, rotating cone 21, powdered fuel inlet pipe 22, air vent 221, inner tube 222, outer tube 223, secondary combustion cone 3, block fuel inlet 31, air distribution box 41, compression plate 42, ventilation pipe 43, bearing 44. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] like Figure 1 As shown, the burner according to the embodiment of the present invention includes a housing 1 , a combustion cone assembly 2 and a secondary combustion cone 3 .

[0022] Specifically, the combustion cone assembly 2 is connected to the shell 1, and the combustion cone assembly 2 includes a rotating cone 21 and a powdered fuel inlet pipe 22. The rotating cone 21 is rotatably arranged in the shell 1 and has a combustion chamber. One end of the powdered fuel inlet pipe 22 is located outside the shell 1, and the other end extends into the combustion chamber. The secondary combustion cone 3 is passed through the shell 1, and the secondary combustion cone 3 has an exhaust channel connected to the fuel chamber. The part of the secondary combustion cone 3 located outside the shell 1 is provided with a block fuel inlet 31 connected to the exhaust channel.

[0023] In other words, in the burner of the present application, powdered waste can be transported to the combustion chamber of the rotating cone 21 by the powdered fuel inlet pipe 22 under the drive of the blowing equipment, and the block waste can fall into the combustion chamber of the rotating cone 21 through the block fuel inlet 31 through the exhaust channel. When the calorific value of the powdered waste is low, block waste with a higher calorific value can be introduced into the combustion chamber for coordinated combustion. Conversely, when the calorific value of the block waste is low, powdered waste with a higher calorific value can be introduced into the combustion chamber for coordinated combustion. As a result, the fuel with a higher calorific value can provide a combustion-supporting effect for the fuel with a lower calorific value, thereby improving the stability of the incineration treatment of low calorific value waste and improving the waste treatment efficiency.

[0024] It can be understood that compared with the burners in traditional technologies, the burner of the present application can be used to separately treat bulk waste and powdered waste without increasing the burner processing capacity. At the same time, it can also realize the coordinated integrated combustion of bulk waste and powdered waste, thereby reducing other waste treatment equipment added due to the treatment of different wastes and saving the operating costs of waste incineration treatment.

[0025] According to the burner of an embodiment of the present invention, the combustion cone assembly is connected to the shell, and the combustion cone assembly includes a rotating cone and a powdered fuel inlet pipe. The rotating cone is rotatably arranged in the shell and has a combustion chamber. One end of the powdered fuel inlet pipe is located outside the shell, and the other end extends into the combustion chamber. The secondary combustion cone is penetrated by the shell, and the secondary combustion cone has an exhaust channel connected to the fuel chamber. The part of the secondary combustion cone located outside the shell is provided with a block fuel inlet connected to the exhaust channel. Thus, the powdered waste can be transported to the combustion chamber of the rotating cone by the powdered fuel inlet pipe under the drive of the blowing device, and the block waste can fall into the combustion chamber of the rotating cone through the exhaust channel from the block fuel inlet, so that the block waste with lower calorific value can be synergistically burned with the powdered waste with higher calorific value, or the block waste with higher calorific value can be synergistically burned with the powdered waste with lower calorific value. The fuel with higher calorific value can provide a combustion-supporting effect for the fuel with lower calorific value, thereby improving the stability of the incineration treatment of low calorific value waste and improving the waste treatment efficiency.

[0026] In addition, compared with the burners in traditional technologies, the burner of the present application can be used to separately treat bulk waste and powdered waste without increasing the burner processing capacity. At the same time, it can also realize the coordinated integrated combustion of bulk waste and powdered waste, thereby reducing other waste treatment equipment added due to the treatment of different wastes and saving waste treatment costs.

[0027] Further, if Figure 1 As shown, the central axis of the pulverized fuel inlet pipe 22 is collinear with the midline axis of the rotating cone 21 .

[0028] In other words, the pulverized fuel inlet pipe 22 is coaxial with the rotation axis of the rotating cone 21 , and the rotating cone can rotate around the pulverized fuel inlet pipe 22 .

[0029] It can be understood that the combustion of the block fuel in the rotating cone 21 and the powdered fuel in the powdered fuel inlet pipe 22 will each generate a hot air flow. The calorific value of the fuel is different, and the temperature of the hot air flow generated by its combustion is also different. When the rotating cone 21 rotates, the hot air flow generated by the powdered fuel will be vortex-mixed with the hot air flow generated by the block fuel under the action of centrifugal force. The mixed vortex air flow can increase the temperature in the combustion chamber, so that the temperature in the combustion chamber meets the ignition point of the low calorific value fuel, ensuring that the low calorific value waste can be stably burned and incinerated.

[0030] Further, if Figure 1 As shown, the outer wall of the portion of the pulverized fuel inlet pipe 22 located in the combustion chamber is provided with air holes 221 .

[0031] It is understandable that under the centrifugal action, the hot air flow from the powder fuel inlet pipe 22 will spontaneously overflow from the air holes 221 and mix with the hot air flow of the external block fuel, thereby improving the mixing efficiency of the two air flows and accelerating the temperature rise rate of the combustion chamber.

[0032] Further, if Figure 1 As shown, the powder fuel inlet pipe 22 includes an inner tube 222 and an outer tube 223. The outer tube 223 is arranged on the outside of the inner tube 222 with a spacer ring and forms a cold air cavity with the inner tube 222. The cold air cavity has a cold air inlet at one end outside the shell 1. Both the inner tube 222 and the outer tube 223 have air holes 221.

[0033] It can be understood that the cold air flow can be passed into the cold air chamber from outside the shell 1 and then cool the inner tube 222 and the outer tube 223 of the powder fuel inlet tube 22 at the same time. The cold air flow is then converted into hot air flow and discharged into the combustion chamber through the air vent 221, thereby improving the durability of the powder fuel inlet tube 22.

[0034] Further, if Figure 1As shown, the burner also includes an air intake assembly, the rotating cone 21 has an air intake cavity, the rotating cone 21 has a plurality of air outlet holes arranged at intervals along its circumference, the air outlet holes are connected to the air intake cavity, and the air intake assembly is connected to the air intake cavity to supply air to the air intake cavity.

[0035] It can be understood that the air intake chamber can be arranged in the cone wall of the rotating cone 21. At this time, the cone wall of the rotating cone 21 is enclosed by the inner wall and the outer wall. The air intake chamber can be connected with the combustion chamber through the air outlet provided on the inner wall, so that the gas introduced into the air intake component can be discharged into the combustion chamber through the air outlet from the air intake chamber to form a primary wind. The primary wind cooperates with the rotation of the rotating cone 21 to put the fuel in a fluidized combustion state, so that the fuel can be fully burned and the waste incineration treatment efficiency is improved.

[0036] Further, if Figure 1 As shown, the rotating cone 21 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 inlet assembly. The air outlet pipes are provided with air outlet holes. The rotating cone 21 also includes a plurality of hoop plates (not shown) arranged at intervals along the extension direction of its central axis, and the hoop plates surround the outer circumference of the plurality of air outlet pipes.

[0037] In other words, the air outlet pipe and the hoop plate cooperate to form a mesh frame-shaped cone wall of the rotating cone 21. At this time, the flow channel of the air outlet pipe can be used as an air inlet chamber to introduce primary air into the combustion chamber, and the hoop plate will connect multiple air outlet pipes in sequence 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.

[0038] It can be understood that the circumferentially arranged air outlet pipes optimize the primary air distribution, allowing the primary air to act evenly on the fuel combustion, ensuring complete combustion of the waste.

[0039] Preferably, a grid can be provided in the mesh frame formed by the gas outlet pipe and the hoop plate, thereby preventing unburned waste from falling from the mesh frame and ensuring that the waste is fully burned.

[0040] Further, if Figure 1 As shown, the air intake assembly includes an air distribution box 41, which is rotatably installed on the housing 1 through a bearing 44, the air outlet pipe is connected to the air distribution box 41, and the powdered fuel inlet pipe 22 is installed on the air distribution box 41.

[0041] It can be understood that the air distribution box 41 is connected to the combustion cone through the air outlet pipe, so that the air distribution box 41 and the combustion cone can rotate synchronously to ensure sufficient supply of primary air.

[0042] Optionally, the powdered fuel inlet pipe 22 should be rotatably connected to the gas distribution box 41, or a through hole for entering the combustion chamber is provided at the central axis of the gas distribution box 41, thereby avoiding obstruction to the rotation of the gas distribution box 41 due to the provision of the powdered fuel inlet pipe 22.

[0043] Further, if Figure 1 As shown, the air intake assembly also includes a compression plate 42 and a plurality of ventilation pipes 43 passed through the compression plate 42, a plurality of first docking holes are provided on the inner plate of the air distribution box 41 facing the rotating cone 21, and a plurality of exhaust pipes are correspondingly passed through the plurality of first docking holes at one end facing the air distribution box 41, and a plurality of second docking holes opposite to the first docking holes are provided on the outer plate of the air distribution box 41 facing away from the rotating cone 21, and the compression plate 42 is pressed against the outer plate of the air distribution box 41 by an elastic member and the plurality of ventilation pipes 43 are opposite to the plurality of second docking holes.

[0044] In other words, on the side of the air distribution box facing the rotating cone 21, the air distribution box and the rotating cone 21 become an integrated structure through the air outlet pipe passing through the first docking hole, and the air distribution box rotates together with the rotating cone 21, and on the other side of the air distribution box away from the rotating cone 21, the elastic member presses the clamping plate 42 against the air distribution box, thereby realizing a rotatable sealed connection between the ventilation pipe 43 and the air distribution box, that is, the flow channel in the ventilation pipe 43 is intermittently connected to the second docking hole, thereby minimizing the loss of primary air and improving the utilization rate of primary air.

[0045] It should be noted that the elastic member always presses the compression plate 42 against the air distribution box, and during this process, the air inlet pipe cannot move with the compression plate 42. Therefore, a limit slot can be set on the compression plate 42, and the ventilation pipe 43 is engaged in the limit slot through a limit protrusion. In this way, the ventilation pipe 43 has a certain amount of movement relative to the compression plate 42, thereby preventing the ventilation pipe 43 from falling off the compression plate 42 during the compression process.

[0046] Further, if Figure 1 As shown, the end of the rotating cone 21 away from the gas distribution box 41 has an open port connected to the exhaust channel, the open port is open obliquely upward, and the secondary combustion cone 3 extends along the opening direction of the open port.

[0047] In other words, the exhaust channel is a downward sloping straight channel leading to the open port, and the block fuel can quickly slide down from the exhaust channel to the open port and enter the combustion chamber, avoiding blockage in the exhaust channel, thereby improving the input efficiency of the block fuel.

[0048] Further, if Figure 1 As shown, the block fuel inlet 31 is located on the top wall of the secondary combustion cone 3, so that the block fuel can fall from the block fuel inlet 31 to the exhaust channel under the action of gravity, avoiding the addition of other driving and feeding equipment to increase the operating cost of waste incineration treatment.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0053] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0054] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A burner, characterized in that: include: case; a combustion cone assembly connected to the housing and comprising a rotating cone and a pulverized fuel inlet pipe, wherein the rotating cone is rotatably disposed within the housing and defines a combustion chamber, and one end of the pulverized fuel inlet pipe is located outside the housing and the other end extends into the combustion chamber; a secondary combustion cone, the secondary combustion cone being disposed through the housing and having an exhaust passage communicating with the fuel chamber, and a portion of the secondary combustion cone located outside the housing being provided with a block fuel inlet communicating with the exhaust passage; The central axis of the pulverized fuel inlet pipe is collinear with the midline axis of the rotating cone; The outer wall of the portion of the pulverized fuel inlet pipe located in the combustion chamber is provided with air holes; The burner further includes an air intake assembly, the rotating cone having an air intake cavity, the rotating cone having a plurality of air outlet holes spaced apart along its circumference, the air outlet holes being in communication with the air intake cavity, and the air intake assembly being in communication with the air intake cavity to supply air to the air intake cavity; The rotating cone has a plurality of air outlet pipes arranged at intervals along its circumference, each of the plurality of air outlet pipes being connected to the air inlet assembly, and each of the air outlet pipes being provided with the air outlet hole. The rotating cone further includes a plurality of hoop plates arranged at intervals along the extension direction of its central axis, the hoop plates surrounding the outer circumference of the plurality of air outlet pipes; The air intake assembly includes an air distribution box, which is rotatably installed on the shell through a bearing. The air outlet pipe is connected to the air distribution box, and the powdered fuel inlet pipe is installed on the air distribution box.

2. The burner according to claim 1, characterized in that The powder fuel inlet pipe includes an inner pipe and an outer pipe. The outer pipe spacer ring is arranged on 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 air vent.

3. The burner according to claim 1, characterized in that The air intake assembly also includes a compression plate and a plurality of ventilation pipes passed through the compression plate. A plurality of first docking holes are provided on the inner plate of the air distribution box facing the rotating cone. A plurality of the exhaust pipes are correspondingly passed through the plurality of first docking holes at one end facing the air distribution box. A plurality of second docking holes opposite to the first docking holes are provided on the outer plate of the air distribution box facing away from the rotating cone. The compression plate is pressed against the outer plate of the air distribution box by an elastic member and the plurality of the ventilation pipes are opposite to the plurality of the second docking holes.

4. The burner according to claim 3, characterized in that An end of the rotating cone away from the air distribution box has an open port communicating with the exhaust passage, the open port is open obliquely upward, and the secondary combustion cone extends along the opening direction of the open port.

5. The burner according to claim 4, characterized in that The block fuel inlet is located on the top wall of the secondary combustion cone.

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