Nitrogen oxide high-temperature heating equipment

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses nitrogen oxide high-temperature heating equipment which comprises an incinerator and an incinerator arranged in the incinerator, an air duct is arranged outside the incinerator, the lower portion of the incinerator is communicated with a waste gas inlet pipe, the outer side of the air duct is communicated with a gas inlet pipe, and the gas inlet pipe is communicated with a gas outlet pipe. A waste gas inlet pipe is arranged in the shell, the waste gas inlet pipe is used for supplying air and fuel to the incinerator, a pneumatic adjusting assembly is arranged on the lower portion of an inner cavity of the shell, and the pneumatic adjusting assembly is blown by gas flowing in from the waste gas inlet pipe to achieve the upward stirring effect on the transmission shaft, and the height difference between the movable disc and the fixed disc is changed. According to the utility model, before air and fuel gas are fed into the incinerator, the air and the fuel gas are mixed in advance through the spiral pipe so as to ensure the subsequent sufficient combustion effect; the incinerator can be driven by the air speed adjusting assembly to change the incineration range at different exhaust gas introduction air speeds, and then the treatment effect on the exhaust gas with the too high air speed is improved and guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a high-temperature heating device for nitrogen oxides. Background Technology

[0002] Nitrogen oxides refer to compounds composed of only nitrogen and oxygen, such as nitric oxide (NO) and nitrogen dioxide (NO2). Most of the nitrogen oxides emitted by human activities come from the combustion of fossil fuels and the production and use of nitric acid. Nitrogen oxides have a great damaging effect on the environment. They are not only one of the main substances that form acid rain, but also an important substance that forms photochemical smog in the atmosphere and an important factor that depletes ozone.

[0003] Existing nitrogen oxide combustion treatment equipment suffers from insufficient overall mixing of air and fuel gas during the introduction of nitrogen oxides, which reduces the combustion efficiency. At the same time, the burner has a fixed combustion effect on nitrogen oxides at different flow rates, failing to differentiate combustion based on the flow rate of nitrogen oxides, thus reducing the combustion treatment efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-temperature heating device for nitrogen oxides, which solves the problems of insufficient mixing of air and fuel gas in existing nitrogen oxide waste gas combustion treatment equipment, thus reducing the subsequent combustion effect; at the same time, the burner does not differentiate between waste gas with different flow rates for nitrogen oxides, thus reducing the incineration treatment effect.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-temperature heating device for nitrogen oxides includes an incinerator and an incinerator arranged inside the incinerator. An external air duct is provided for the incinerator. A waste gas inlet pipe is connected to the lower part of the incinerator. An air inlet pipe is connected to the outer side of the air duct to supply air and fuel to the incinerator. An air chamber is arranged on the outer side of the air duct, and a spiral tube is connected to the air chamber through the air inlet pipe. An air and fuel inlet is connected to the upper end of the spiral tube. The incinerator includes a shell. A fixed plate and a movable plate slidably arranged via a drive shaft are fixedly arranged on the shell. A plurality of nozzles are connected to the outer surfaces of both the movable and fixed plates. Both the movable and fixed plates are connected to the air chamber, and air and fuel are burned at the nozzles. A pneumatic adjustment component is provided in the lower part of the inner cavity of the shell. The pneumatic adjustment component, under the blowing of gas flowing in through the waste gas inlet pipe, achieves an upward pushing effect on the drive shaft, changing the height difference between the movable and fixed plates.

[0009] Preferably, a partition plate is fixedly installed in the middle of the inner cavity of the incinerator, and the air duct is detachably installed in the middle of the partition plate by bolts.

[0010] Preferably, the gas chamber is connected to the incinerator through several equally spaced connecting pipes.

[0011] Preferably, the inner cavity of the housing is provided with a gas channel communicating with the connecting pipe, and the inner cavities of the fixed plate and the movable plate are each provided with an intermediate cavity communicating with the nozzle. The upper and lower intermediate cavities are connected by a telescopic pipe, and the connecting pipe is connected to the intermediate cavity through the gas channel.

[0012] Preferably, the wind-driven adjustment assembly includes a drive shaft, with both ends of the drive shaft movably inserted into the cavity wall of the air duct. The two ends of the drive shaft are fixedly connected to the cavity wall of the air duct via torsion springs. An adjustment cavity is provided in the lower part of the inner cavity of the housing. The middle part of the drive shaft passes through the adjustment cavity and is rotatably connected to the cavity wall of the adjustment cavity. A toggle lever is fixedly provided on the drive shaft in the middle of the adjustment cavity. A wind vane is symmetrically fixedly connected on the drive shaft between the air duct and the housing. The wind vane can rotate in a direction under the influence of the airflow entering the inner cavity of the air duct, thereby driving the toggle lever to push the drive shaft upward.

[0013] Preferably, the upper end of the actuating rod is provided with an inclined surface, and the lower end of the transmission shaft is provided with a groove that matches the inclined surface on the actuating rod, and the actuating rod always moves within the groove.

[0014] (III) Beneficial Effects

[0015] This utility model has the following beneficial effects:

[0016] This high-temperature nitrogen oxide heating equipment, through its spiral tube, ensures that the air and fuel introduced at the air and fuel inlets are fully mixed before entering the incinerator, guaranteeing better and more complete combustion. The movable disc and drive shaft, when the flow velocity at the exhaust gas inlet is high, drive the pneumatic adjustment component, which in turn moves the drive shaft upwards, moving the movable disc away from the fixed disc. This reduces the overlap of the combustion range between the nozzles on the fixed and movable discs, expanding the combustion area and ensuring more uniform and thorough combustion of the flue gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the present invention.

[0019] Figure 3 This is a partial cross-sectional view of the air duct structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the incinerator of this utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the wind-driven adjustment component of this utility model.

[0022] In the diagram: 1. Incinerator; 2. Spiral tube; 21. Air and fuel inlet; 22. Inlet pipe; 3. Exhaust gas inlet pipe; 4. Divider plate; 5. Air duct; 51. Gas chamber; 52. Connecting pipe; 6. Incinerator; 61. Shell; 62. Adjustment chamber; 63. Gas passage; 64. Fixed plate; 65. Movable plate; 66. Intermediate chamber; 67. Nozzle; 68. Telescopic pipe; 69. Drive shaft; 7. Pneumatic adjustment assembly; 71. Drive shaft; 72. Air vane; 73. Torsion spring; 74. Actuating lever. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 This utility model provides a technical solution: a high-temperature heating device for nitrogen oxides, including an incinerator 1 and an incinerator 6 arranged inside the incinerator 1. An air duct 5 is provided outside the incinerator 6. A waste gas inlet pipe 3 is connected to the lower part of the incinerator 1. An air inlet pipe 22 is connected to the outer side of the air duct 5 to supply air and fuel to the incinerator 6. An air chamber 51 is arranged outside the air duct 5, and a spiral tube 2 is connected to the air inlet pipe 22. An air and fuel inlet 21 is connected to the upper end of the spiral tube 2. The incinerator 6 includes... The housing 61 has a fixed disk 64 and a movable disk 65 slidably arranged on it via a drive shaft 69. Several nozzles 67 are arranged on the outer surfaces of both the movable disk 65 and the fixed disk 64. Both the movable disk 65 and the fixed disk 64 are connected to the air chamber 51, where air and fuel are burned at the nozzles 67. A wind-driven adjustment component 7 is provided in the lower part of the inner cavity of the housing 61. The wind-driven adjustment component 7 is blown by the gas flowing in from the exhaust gas inlet pipe 3, which achieves an upward pushing effect on the drive shaft 69, changing the height difference between the movable disk 65 and the fixed disk 64.

[0025] This invention, through the spiral tube 2, allows air and fuel, which are separately supplied at the air and fuel inlets 21, to be fully mixed before entering the incinerator 1, ensuring better combustion and more complete combustion. The movable disc 65 and drive shaft 69, when the flow velocity at the exhaust gas inlet 3 is high, drive the pneumatic adjustment component 7 to move. This, in turn, moves the drive shaft 69 upwards, causing the movable disc 65 to move away from the fixed disc 64. This reduces the overlap of the combustion range of the nozzles 67 between the fixed disc 64 and the movable disc 65, thus expanding the combustion range and ensuring more uniform and thorough combustion of the flue gas.

[0026] In this embodiment, a partition plate 4 is fixedly installed in the middle of the inner cavity of the incinerator 1, and the air duct 5 is detachably installed in the middle of the partition plate 4 by bolts.

[0027] Reference Figure 3 and 4 As shown, in this embodiment, the gas chamber 51 is connected to the incinerator 6 through several equally spaced connecting pipes 52. The connecting pipes 52 ensure the connection between the gas chamber 51 and the incinerator 6, thereby ensuring the efficient transmission of the fuel-gas mixture; at the same time, the connecting pipes 52 also serve to install and fix the entire incinerator 6.

[0028] Reference Figure 4 As shown, in this embodiment, the inner cavity of the housing 61 is provided with a gas channel 63 communicating with the connecting pipe 52. The inner cavities of both the fixed disk 64 and the movable disk 65 are provided with intermediate cavities 66 communicating with the nozzles 67. The upper and lower intermediate cavities 66 are connected by a telescopic pipe 68, and the connecting pipe 52 is connected to the intermediate cavities 66 via the gas channel 63. The intermediate cavities 66 and the gas channel 63 ensure that the fuel-gas mixture is efficiently and quickly delivered to the nozzles 67 on the movable disk 65 and the fixed disk 64. Simultaneously, the telescopic pipe 68 ensures the connectivity and sealing of the intermediate cavities 66 on the movable disk 65 and the fixed disk 64 when the distance between them changes. The drive shaft 69 and the intermediate cavity 66 on the fixed disk 64 are sealed using a dynamic sealing ring.

[0029] Reference Figure 4 and 5As shown, in this embodiment, the wind-driven adjustment assembly 7 includes a drive shaft 71. Both ends of the drive shaft 71 are movably inserted into the cavity wall of the air duct 5. Both ends of the drive shaft 71 are fixedly connected to the cavity wall of the air duct 5 by torsion springs 73. An adjustment cavity 62 is provided in the lower part of the inner cavity of the housing 61. The middle part of the drive shaft 71 passes through the adjustment cavity and is rotatably connected to the cavity wall of the adjustment cavity 62. A toggle rod 74 is fixedly provided in the middle of the drive shaft 71 in the adjustment cavity 62. A wind plate 72 is symmetrically fixedly connected on the drive shaft 71 between the air duct 5 and the housing 61. The wind plate 72 can rotate in a direction under the drive of the airflow entering the inner cavity of the air duct 5, thereby driving the toggle rod 74 to push the drive shaft 69 upward. By using the set air deflector 72 and the actuating rod 74, the combustion effect of the incinerator 66 on the flue gas is related to the flow rate of the flue gas. When the flue gas flow rate at the exhaust gas inlet pipe 3 is low, the combustion effect of the nozzles 67 between the movable disc 65 and the fixed disc 64 overlaps more, resulting in concentrated combustion of the exhaust gas. When the flue gas flow rate is high, the airflow pushes the air deflector 72, which in turn drives the drive shaft 71 and the actuating rod 74 on it to rotate, thereby pushing the transmission shaft 69 upward. This causes the movable disc 65 to move the nozzles 67 away from the nozzles 67 on the fixed disc 64, expanding the combustion range. By expanding the range, the uniformity of the flue gas combustion effect is ensured, maximizing the combustion effect.

[0030] Reference Figure 4 and 5 As shown, in this embodiment, the upper end of the actuating lever 74 is provided with an inclined surface, and the lower end of the transmission shaft 69 is provided with a groove that matches the inclined surface of the actuating lever 74. The actuating lever 74 always moves within the groove. The inclined surface and the groove ensure that the actuating lever 74 moves the transmission shaft 69 upward smoothly and with a sensitive response.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature heating device for nitrogen oxides, comprising an incinerator and a burner arranged within the incinerator, wherein a duct is provided outside the burner, an exhaust gas inlet pipe is connected to the lower part of the incinerator, and an air inlet pipe is connected to the outer side of the duct, the air inlet pipe being used to supply air and fuel to the burner, characterized in that: An air chamber is arranged on the outer side of the air duct, and a spiral tube is connected to the air inlet pipe in the air chamber. An air and fuel inlet is connected to the upper end of the spiral tube. The incinerator includes a shell, on which a fixed plate is fixedly arranged and a movable plate is slidably arranged via a drive shaft. Several nozzles are arranged on the outer surfaces of both the movable plate and the fixed plate. Both the movable plate and the fixed plate are connected to the air chamber, and air and fuel are burned at the nozzles. A wind-driven adjustment component is provided in the lower part of the inner cavity of the shell. The wind-driven adjustment component, under the blowing of the gas flowing in through the exhaust gas inlet pipe, achieves an upward pushing effect on the drive shaft, changing the height difference between the movable plate and the fixed plate.

2. The nitrogen oxide high-temperature heating device according to claim 1, characterized in that: A partition plate is fixedly installed in the middle of the inner cavity of the incinerator, and the air duct is detachably installed in the middle of the partition plate by bolts.

3. The nitrogen oxide high-temperature heating device according to claim 2, characterized in that: The gas chamber is connected to the incinerator through several equally spaced connecting pipes.

4. The nitrogen oxide high-temperature heating device according to claim 3, characterized in that: The inner cavity of the housing is provided with a gas channel that communicates with the connecting pipe. The inner cavities of the fixed plate and the movable plate are each provided with an intermediate cavity that communicates with the nozzle. The upper and lower intermediate cavities are connected by a telescopic pipe, and the connecting pipe is connected to the intermediate cavity through the gas channel.

5. A high-temperature heating device for nitrogen oxides according to claim 1 or 4, characterized in that: The wind-driven adjustment assembly includes a drive shaft with both ends movably inserted into the cavity wall of the air duct. Both ends of the drive shaft are fixedly connected to the cavity wall of the air duct via torsion springs. An adjustment cavity is provided in the lower part of the inner cavity of the housing. The middle part of the drive shaft passes through the adjustment cavity and is rotatably connected to the cavity wall of the adjustment cavity. A toggle lever is fixedly installed on the drive shaft in the middle of the adjustment cavity. A wind vane is symmetrically fixedly connected on the drive shaft between the air duct and the housing. The wind vane can rotate in a direction under the influence of the airflow entering the inner cavity of the air duct, thereby driving the toggle lever to push the drive shaft upward.

6. A high-temperature heating device for nitrogen oxides according to claim 5, characterized in that: The upper end of the actuating lever is provided with an inclined surface, and the lower end of the transmission shaft is provided with a groove that matches the inclined surface on the actuating lever. The actuating lever always moves within the groove.

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