A biomass combustion furnace exhaust gas treatment device

Abstract

The utility model relates to combustion furnace waste gas treatment technical field discloses a kind of waste gas treatment equipment for biomass combustion furnace, including purification tank, the heat exchange cylinder is fixedly connected in the lower end of purification tank inner chamber, the serpentine heat exchange pipe is equipped at the center position of heat exchange cylinder inner chamber, the air inlet pipe is interconnected in the bottom end of one side of heat exchange cylinder, and air inlet pipe one end extends to purification tank outside through purification tank, and air inlet pipe gas outlet is interconnected with serpentine heat exchange pipe air inlet end, the filter cylinder is detachably nested in the top end of purification tank;The utility model can stir water body to improve heat exchange efficiency when heat exchange, realize waste gas heat is fully recovered, and simultaneously drive cleaning assembly to clean filter cylinder and conical guide plate in stirring process, so that dust is gathered and automatically falls into collection box through discharging chute, effectively reduce cleaning difficulty, improve the convenience and use effect of waste gas treatment.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology for combustion furnaces, specifically a waste gas treatment device for biomass combustion furnaces. Background Technology

[0002] An electric arc combustion furnace, also known as a carbon-sulfur combustion furnace or simply an electric arc furnace, is a device that uses a high-voltage, high-frequency oscillating circuit to generate a large instantaneous current to ignite a sample. The sample is then rapidly combusted under oxygen-rich conditions, producing a mixed gas. This gas mixture is then analyzed quantitatively and quickly using chemical analysis procedures to determine the carbon and sulfur content in the sample. It represents the culmination of years of hard work by Chinese physicochemical researchers. In an electric arc combustion furnace, fuel (such as coal, oil, or natural gas) burns in oxygen, generating high-temperature heat and exhaust gases. These exhaust gases typically include gases such as carbon dioxide, and direct emission would harm the environment; therefore, they require treatment equipment before release.

[0003] Existing waste gas treatment methods for biomass combustion furnaces typically rely on filtration structures (such as activated carbon adsorption) to separate particulate matter and impurities from the waste gas. However, the adsorption efficiency of activated carbon decreases as the temperature rises, making it impossible to comprehensively separate particulate matter and impurities from the waste gas. Some waste gas treatment devices on the market recover heat from the high-temperature waste gas through heat exchangers before separation. However, heat exchangers require water to be placed inside them. During heat exchange, heat can only be gradually conducted outward from the water near the waste gas, resulting in rapid heating only at the location near the heat exchange tubes. Once the water temperature in the heat exchange tubes rises, heat cannot be quickly transferred outward, leading to low heat transfer efficiency and a long overall heat exchange time. This makes it difficult to meet the practical requirements for efficient heat recovery from waste gas. Therefore, we propose a waste gas treatment device for biomass combustion furnaces. Utility Model Content

[0004] The main objective of this invention is to provide a waste gas treatment device for biomass combustion furnaces, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste gas treatment device for a biomass combustion furnace, comprising a purification box, a heat exchange cylinder fixedly connected to the lower end of the inner cavity of the purification box, a serpentine heat exchange tube provided at the center of the inner cavity of the heat exchange cylinder, an air inlet pipe interconnected to one side of the bottom end of the heat exchange cylinder, one end of the air inlet pipe extending through the purification box to the outside of the purification box, and the air outlet end of the air inlet pipe interconnected with the air inlet end of the serpentine heat exchange tube, a filter cylinder detachably nested at the top of the purification box, a servo motor detachably connected to the center of the upper surface of the filter cylinder, a connecting pipe detachably connected to the power output end of the servo motor, the bottom end of the connecting pipe extending through the heat exchange cylinder to the top of the inner cavity of the heat exchange cylinder, a connector fixedly connected to the bottom end of the connecting pipe, and the bottom end of the connector rotatably interconnected with the air outlet end of the serpentine heat exchange tube, stirring plates provided on both sides of the inner cavity of the heat exchange cylinder, the top ends of the stirring plates fixedly connected to both sides of the connecting pipe, and an exhaust hole opened on the surface of the connecting pipe at the top of the heat exchange cylinder.

[0006] Preferably, a conical guide plate is fixedly connected to the top of the heat exchange cylinder, and the outer wall of the conical guide plate is in contact with the inside of the purification box. A cleaning component is slidably provided on the upper surface of the conical guide plate, and the end of the cleaning component is fixedly connected to the connecting pipe.

[0007] Preferably, the cleaning assembly includes a first cleaning plate and a second cleaning plate. The first cleaning plate is detachably connected to the surface of the connecting pipe above the conical guide plate, and the first cleaning plate is attached to the upper surface of the conical guide plate. The second cleaning plate is detachably connected to the upper surface of the first cleaning plate, and the second cleaning plate is attached to the lower surface of the filter cartridge.

[0008] Preferably, the filter cartridge includes a cylinder body, an activated carbon frame plate, and a filter screen. The cylinder body is detachably nested at the center of the purification box. The activated carbon frame plate is detachably connected to the upper end of the inner cavity of the cylinder body, and the filter screen is detachably connected to the bottom end of the cylinder body, with the bottom end of the filter screen in contact with the second cleaning plate.

[0009] Preferably, a feeding groove is provided on one side of the conical guide plate, and an assembly groove is provided in the inner cavity of the purification box below the feeding groove, and a collection box is slidably provided in the inner cavity of the assembly groove.

[0010] Preferably, the upper and lower ends of one side of the heat exchange cylinder are respectively connected to a water injection pipe and a drain pipe, and both the water injection pipe and the drain pipe extend through the inner wall of the purification box to the outside of the purification box. The inner cavities of the water injection pipe and the drain pipe are equipped with valves.

[0011] Preferably, the purification box is equipped with a control panel on one side, and the servo motor is electrically connected to an external power source through the control panel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model utilizes a servo motor, connecting pipe, heat exchange cylinder, serpentine heat exchange tube, and stirring rod working together. High-temperature exhaust gas flows into the serpentine heat exchange tube through the inlet pipe. The tortuous pipe extends the residence time of the exhaust gas in the heat exchange cylinder, increasing the contact area with the water. Simultaneously, the servo motor drives the connecting pipe to rotate, causing the stirring plate to agitate the water in the heat exchange cylinder. This breaks the heat conduction limitations of still water, accelerates heat transfer, effectively avoids local overheating of the water, improves heat exchange efficiency, and ensures full recovery and utilization of exhaust gas heat. During the stirring process, the connecting pipe drives the first and second cleaning plates to rotate synchronously. This rotation cleans the dust on the surface of the filter screen on the lower surface of the dust filter cylinder, causing most of the dust to fall onto the conical guide plate. This prevents dust accumulation from affecting the ventilation effect of the filter cylinder, effectively improving the treatment effect of exhaust gas. The dust that falls onto the conical guide plate accumulates on the conical guide plate under the rotation of the first cleaning plate, thus accumulating the waste material together. This achieves the waste material collection effect, reduces the difficulty of later cleaning, and improves the convenience of use.

[0014] 2. This utility model utilizes a servo motor, connecting pipe, first cleaning plate, feeding trough, and collection box working together. During the process of the first cleaning plate rotating to collect the falling dust, the collected dust will automatically fall into the collection box when it passes through the feeding trough. During subsequent cleaning, the collection box can be pulled outwards to remove the collected dust, further reducing the difficulty of cleaning and effectively improving the convenience and effectiveness of waste gas treatment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the cross-sectional view of the purification box of this utility model;

[0017] Figure 3 This is a structural schematic diagram of the heat exchanger cylinder of this utility model in cross-section.

[0018] In the diagram: 1. Purification box; 2. Air inlet pipe; 3. Filter cartridge; 4. Servo motor; 5. Assembly slot; 6. Collection box; 7. Water injection pipe; 8. Drain pipe; 9. Connecting pipe; 10. Exhaust port; 11. Conical guide plate; 12. Heat exchange cylinder; 13. Feed trough; 14. First cleaning plate; 15. Second cleaning plate; 16. Stirring plate; 17. Connector; 18. Serpentine heat exchange tube; 31. Cylinder body; 32. Activated carbon frame plate; 33. Filter screen. Detailed Implementation

[0019] 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.

[0020] Example

[0021] Please see Figure 1 - Figure 3 The diagram shows a waste gas treatment device for a biomass combustion furnace, comprising a purification chamber 1. A heat exchange cylinder 12 is fixedly connected to the lower end of the inner cavity of the purification chamber 1. A serpentine heat exchange tube 18 is located at the center of the inner cavity of the heat exchange cylinder 12. An air inlet pipe 2 is connected to one side of the bottom of the heat exchange cylinder 12, with one end of the air inlet pipe 2 penetrating the purification chamber 1 and extending to the outside of the purification chamber 1. The outlet end of the air inlet pipe 2 is connected to the inlet end of the serpentine heat exchange tube 18. A filter cylinder 3 is detachably nested at the top of the purification chamber 1. A servo motor 4 is detachably connected to the center of the upper surface of the filter cylinder 3. A connecting pipe 9 is detachably connected to the power output end of the servo motor 4. The bottom end of the connecting pipe 9 penetrates the heat exchange cylinder 12 and extends to the top of the inner cavity of the heat exchange cylinder 12. A connector 17 is fixedly connected to the bottom end of the connecting pipe 9, and the bottom end of the connector 17 is connected to the outlet end of the serpentine heat exchange tube 18. The heat exchange cylinder 12 is dynamically interconnected, with stirring plates 16 on both sides of its inner cavity. The top of the stirring plates 16 is fixedly connected to both sides of the connecting pipe 9. An exhaust hole 10 is provided on the surface of the connecting pipe 9 at the top of the heat exchange cylinder 12. The serpentine heat exchange tube 18 extends the residence path of the exhaust gas in the heat exchange cylinder 12, increasing the heat exchange area. The stirring plates 16 are driven by the servo motor 4 to stir the water, enhancing the heat transfer efficiency and achieving efficient recovery of heat from the high-temperature exhaust gas. The connecting pipe 9 and the serpentine heat exchange tube 18 are rotatably interconnected, and together with the exhaust hole 10, the exhaust gas after preliminary heat exchange enters the filter cylinder 3, achieving the dual effects of secondary utilization of heat energy and purification of exhaust gas, effectively improving energy utilization and exhaust gas treatment efficiency. Shaft seals are provided at the connection points of the connecting pipe 9 with the heat exchange cylinder 12 and the connector 17 to prevent leakage. This technology is existing technology and will not be described in detail here.

[0022] The heat exchange cylinder 12 is fixedly connected to a conical guide plate 11 at its top end, and the outer wall of the conical guide plate 11 is in contact with the interior of the purification chamber 1. A cleaning component is slidably provided on the upper surface of the conical guide plate 11, and the end of the cleaning component is fixedly connected to the connecting pipe 9. The cleaning component includes a first cleaning plate 14 and a second cleaning plate 15. The first cleaning plate 14 is detachably connected to the surface of the connecting pipe 9 above the conical guide plate 11, and the first cleaning plate 14 is in contact with the upper surface of the conical guide plate 11. The second cleaning plate 15 is detachably connected to the upper surface of the first cleaning plate 14, and the second cleaning plate 15 is in contact with the lower surface of the filter cylinder 3. The filter cylinder 3 includes a cylinder body 31, an activated carbon frame plate 32, and a filter screen 33. The purification chamber 1 contains... A detachable and nested cylinder 31 is provided at the core position. An activated carbon frame plate 32 is detachably connected to the upper end of the inner cavity of the cylinder 31, and a filter screen 33 is detachably connected to the bottom end of the cylinder 31. The bottom end of the filter screen 33 is attached to the second cleaning plate 15. The conical guide plate 11 is attached to the inside of the purification box 1 and can guide impurities to slide down the inclined surface to avoid accumulation on the top of the heat exchange cylinder 12. The first cleaning plate 14, which cooperates with it, is close to the upper surface of the conical guide plate 11. When it rotates with the connecting pipe 9, it can actively clean the residual impurities to prevent blockage of the feed chute 13 and ensure smooth discharge of impurities. The second cleaning plate 15 is attached to the filter screen 33 on the lower surface of the filter cylinder 3 and continuously scrapes the dust attached to the filter screen during equipment operation to avoid dust accumulation affecting filtration efficiency.

[0023] The conical guide plate 11 has a feeding trough 13 on one side, and the purification box 1 below the feeding trough 13 has an assembly groove 5. A collection box 6 is slidably arranged in the inner cavity of the assembly groove 5. The first cleaning plate 14 collects the dust on the conical guide plate 11. When the dust accumulates at the position of the feeding trough 13, it will automatically fall into the collection box 6 in the assembly groove 5 below. After the exhaust gas treatment is completed, the collected dust can be easily cleaned by simply pulling the collection box 6 outward, which effectively improves the convenience and use effect of exhaust gas treatment.

[0024] The heat exchange cylinder 12 is interconnected with a water injection pipe 7 and a drain pipe 8 on one side, respectively. Both the water injection pipe 7 and the drain pipe 8 extend through the inner wall of the purification chamber 1 to the outside of the purification chamber 1. Valves are provided inside the water injection pipe 7 and the drain pipe 8. A control panel is provided on one side of the purification chamber 1, and the servo motor 4 is electrically connected to an external power source through the control panel. The water injection pipe 7, the drain pipe 8, and their valves equipped on the heat exchange cylinder 12 allow operators to flexibly control the replacement and replenishment of water in the cylinder according to actual usage needs. This ensures the required water quantity and quality for heat exchange, maintains efficient heat exchange, and facilitates equipment maintenance and cleaning.

[0025] It should be noted that this utility model is a waste gas treatment device for a biomass combustion furnace. In use, the high-temperature waste gas generated by the biomass combustion furnace is introduced into the serpentine heat exchange tube 18 in the heat exchange cylinder 12 through the inlet pipe 2. Clean water is injected into the heat exchange cylinder 12 through the injection pipe. The serpentine tube design extends the residence time of the waste gas in the heat exchange cylinder 12, significantly increasing the contact area with the water. Simultaneously, the servo motor 4 drives the connecting pipe 9 to rotate, causing the stirring plate 16 to agitate the water, breaking through the limitations of heat conduction, accelerating heat transfer, preventing localized overheating of the water, and efficiently recovering heat from the waste gas. During the rotation of the connecting pipe 9, the first cleaning plate 14 and the second cleaning plate 15 fixed on its surface rotate synchronously. The second cleaning plate 15 cleans the dust filter screen on the lower surface of the dust filter cartridge, sweeping the dust onto the conical guide plate 11 to prevent dust accumulation from affecting the ventilation of the filter cartridge 3 and improving the exhaust gas treatment effect. The first cleaning plate 14 gathers the dust on the conical guide plate 11. When the dust gathers at the position of the discharge trough 13, it will automatically fall into the collection box 6 in the assembly trough 5 below. After the exhaust gas treatment is completed, the collected dust can be easily cleaned by simply pulling the collection box 6 outward, which effectively improves the convenience and use effect of exhaust gas treatment.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment apparatus for a biomass combustion furnace, comprising a purification tank (1), characterized by: A heat exchange cylinder (12) is fixedly connected to the lower end of the inner cavity of the purification box (1). A serpentine heat exchange tube (18) is provided at the center of the inner cavity of the heat exchange cylinder (12). An air inlet pipe (2) is connected to one side of the bottom of the heat exchange cylinder (12). One end of the air inlet pipe (2) extends through the purification box (1) to the outside of the purification box (1). The air outlet of the air inlet pipe (2) is connected to the air inlet of the serpentine heat exchange tube (18). A filter cylinder (3) is detachably nested at the top of the purification box (1). A servo motor (4) is detachably connected to the center of the upper surface of the filter cylinder (3). The power output end of the servo motor (4) is detachably connected to a connecting pipe (9). The bottom end of the connecting pipe (9) passes through the heat exchange cylinder (12) and extends to the top of the inner cavity of the heat exchange cylinder (12). The bottom end of the connecting pipe (9) is fixedly connected to a connector (17), and the bottom end of the connector (17) is rotatably connected to the outlet end of the serpentine heat exchange tube (18). The inner cavity of the heat exchange cylinder (12) is provided with stirring plates (16) on both sides, and the top end of the stirring plates (16) is fixedly connected to both sides of the connecting pipe (9). The surface of the connecting pipe (9) above the heat exchange cylinder (12) is provided with an exhaust hole (10).

2. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 1, characterized by: The top of the heat exchange cylinder (12) is fixedly connected to a conical guide plate (11), and the outer wall of the conical guide plate (11) is in contact with the inside of the purification box (1). A cleaning component is slidably provided on the upper surface of the conical guide plate (11), and the end of the cleaning component is fixedly connected to the connecting pipe (9).

3. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 2, characterized by: The cleaning assembly includes a first cleaning plate (14) and a second cleaning plate (15). The first cleaning plate (14) is detachably connected to the surface of the connecting pipe (9) above the tapered guide plate (11), and the first cleaning plate (14) is attached to the upper surface of the tapered guide plate (11). The second cleaning plate (15) is detachably connected to the upper surface of the first cleaning plate (14), and the second cleaning plate (15) is attached to the lower surface of the filter cartridge (3).

4. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 1, characterized by: The filter cartridge (3) includes a cartridge body (31), an activated carbon frame plate (32), and a filter screen (33). The cartridge body (31) is detachably nested at the center of the purification box (1). The activated carbon frame plate (32) is detachably connected to the upper end of the inner cavity of the cartridge body (31). The filter screen (33) is detachably connected to the bottom end of the cartridge body (31), and the bottom end of the filter screen (33) is attached to the second cleaning plate (15).

5. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 2, characterized by: A feeding trough (13) is provided on one side of the conical guide plate (13), and an assembly groove (5) is provided in the inner cavity of the purification box (1) below the feeding trough (13). A collection box (6) is slidably provided in the inner cavity of the assembly groove (5).

6. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 1, characterized by: The heat exchange cylinder (12) has a water injection pipe (7) and a drain pipe (8) connected to each other at the upper and lower ends on one side, and the water injection pipe (7) and the drain pipe (8) both extend through the inner wall of the purification box (1) to the outside of the purification box (1). The inner cavities of the water injection pipe (7) and the drain pipe (8) are equipped with valves.

7. The exhaust gas treatment apparatus for a biomass combustion furnace according to claim 1, characterized by: The purification box (1) is equipped with a control panel on one side, and the servo motor (4) is electrically connected to an external power source through the control panel.

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