Flue gas treatment device of biomass combustion furnace

Abstract

The utility model is suitable for the technical field of flue gas treatment, and provides a biomass combustion furnace flue gas treatment device which comprises a treatment box, one side of the treatment box is fixedly communicated with a gas inlet pipe, the gas inlet pipe is used for being connected with a combustion furnace, the gas inlet pipe is provided with a check valve, and one side of the treatment box is fixedly communicated with an exhaust pipe; the air inlet end and the air outlet end of the filter box are communicated with the air inlet pipe and the treatment box respectively, and an activated carbon adsorption plate and a filter screen are arranged in the filter box; the spraying box is fixedly mounted on one side of the treatment box, and the spraying box is used for containing lime water; and the spraying mechanism is arranged on the treatment box and the spraying box and is used for spraying lime water to carry out desulfurization treatment. According to the flue gas treatment device of the biomass combustion furnace, sulfide in flue gas can be effectively removed, and the flue gas treatment efficiency and quality are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas treatment, in particular to a flue gas treatment device for a biomass combustion furnace. Background Art

[0002] Biomass combustion furnace is a device that uses biomass as fuel for heat energy conversion. Its working principle mainly includes four steps: fuel supply, combustion, heat energy conversion and exhaust gas treatment. During the combustion process, biomass fuel contacts air to undergo oxidation reaction, releasing heat energy, which is transferred to the heat carrier through heat media (such as water) to achieve energy conversion. The flue gas of biomass boiler has high temperature, high humidity, high dust content, high oxygen content, and complex types of pollutants, including sulfur oxides, nitrogen oxides, particulate matter, etc. These characteristics make it difficult to remove pollutants in the flue gas, causing serious impacts on the environment and human health.

[0003] With the continuous improvement of environmental awareness, it is particularly important to efficiently treat biomass boiler flue gas, which can not only reduce pollutant emissions, protect the environment and human health, but also promote the sustainable development of energy. However, the existing flue gas treatment device has a single structure and cannot handle the various substances contained in the flue gas well. Utility Model Content

[0004] The utility model provides a biomass combustion furnace flue gas treatment device, aiming to solve the problem that the existing flue gas treatment device proposed in the above background technology has a single structure and cannot well treat various substances contained in the flue gas.

[0005] To solve the above problems, the utility model is implemented as follows: a biomass combustion furnace flue gas treatment device comprises: a treatment box, one side of the treatment box is fixedly connected with an air inlet pipe, the air inlet pipe is used to connect the combustion furnace, the air inlet pipe is provided with a check valve, and one side of the treatment box is fixedly connected with an exhaust pipe; a filter box, the air inlet end and the air outlet end of the filter box are respectively connected with the air inlet pipe and the treatment box, and the filter box is provided with an activated carbon adsorption plate and a filter screen; a spray box, the spray box is fixedly installed on one side of the treatment box, and the spray box is used to hold lime water; a spray mechanism, the spray mechanism is provided on the treatment box and the spray box, and is used to spray lime water for desulfurization treatment.

[0006] Preferably, the spray mechanism includes a suction pump, a liquid inlet pipe, a liquid outlet pipe and a plurality of atomizing nozzles. The suction pump is fixedly mounted on one side of the processing box, the liquid inlet pipe is fixedly connected to the liquid inlet end of the suction pump, the liquid inlet end of the liquid inlet pipe extends into the spray box, the liquid outlet pipe is fixedly connected to the liquid outlet end of the suction pump, and the plurality of atomizing nozzles are arranged on the liquid outlet pipe and extend into the processing box.

[0007] Preferably, a stirring motor is fixedly mounted on the top of the spray box, a stirring rod is rotatably mounted on the spray box, one end of the stirring rod is fixedly connected to the output shaft of the stirring motor, and a plurality of stirring blades are provided on the stirring rod.

[0008] Preferably, a threaded barrel is rotatably mounted on the processing box, a threaded rod is threadedly mounted on the threaded barrel, a support rod is fixedly mounted on the bottom end of the threaded rod, a circular scraper is fixedly mounted on the support rod, and the circular scraper fits against the inner wall of the processing box.

[0009] Preferably, a driving motor is fixedly mounted on the top of the processing box, a driving gear is fixedly mounted on the output shaft of the driving motor, a plurality of teeth are provided on the threaded barrel, and the teeth are meshed with the driving gear.

[0010] Preferably, a limiting rod is fixedly mounted on an inner wall of one side of the processing box, and a groove is formed on one side of the threaded rod, and the groove is in sliding contact with one end of the limiting rod.

[0011] Preferably, the bottom of the treatment box is fixedly connected to a waste discharge pipe, the top of the spray box is fixedly connected to a water injection pipe, and valves are provided on the waste discharge pipe and the water injection pipe.

[0012] Compared with the related art, the biomass combustion furnace flue gas treatment device provided by the utility model has the following beneficial effects:

[0013] Compared with the prior art, the biomass combustion furnace flue gas treatment device provided by this solution achieves the overall purpose of more efficient, more stable and easier to maintain flue gas treatment. By introducing a stirring mechanism and an automatic cleaning mechanism, it not only improves the treatment efficiency and system stability, but also realizes precise adjustment of the treatment process through automatic control, ensuring the uniformity and consistency of the treatment effect, ensuring that the treatment liquid remains uniform and active, and improving the reaction efficiency with the flue gas. Pollutants can be removed in time and kept clean to avoid affecting the treatment effect, thereby improving the treatment efficiency, system stability, equipment life and safety, while enhancing flexibility and controllability, providing a more efficient, reliable and safe solution for the flue gas treatment of biomass combustion furnaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the biomass combustion furnace flue gas treatment device provided by the utility model;

[0015] Figure 2 It is a schematic diagram of the main cross-sectional structure of the biomass combustion furnace flue gas treatment device provided by the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A shown in FIG.

[0017] Figure numerals: 1. treatment box; 2. air inlet pipe; 3. check valve; 4. exhaust pipe; 5. filter box; 6. activated carbon adsorption plate; 7. filter screen; 8. spray box; 9. suction pump; 10. liquid inlet pipe; 11. liquid outlet pipe; 12. atomizing nozzle; 13. stirring motor; 14. stirring rod; 15. threaded barrel; 16. threaded rod; 17. circular scraper; 18. driving motor; 19. driving gear; 20. teeth; 21. limit rod; 22. groove. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The utility model provides a biomass combustion furnace flue gas treatment device, such as Figure 1-3As shown, the flue gas treatment device of the biomass combustion furnace includes: a treatment box 1, one side of the treatment box 1 is fixedly connected with an air inlet pipe 2, the air inlet pipe 2 is used to connect the combustion furnace, the air inlet pipe 2 is provided with a check valve 3, and one side of the treatment box 1 is fixedly connected with an exhaust pipe 4; a filter box 5, the air inlet end and the air outlet end of the filter box 5 are respectively connected with the air inlet pipe 2 and the treatment box 1, and the filter box 5 is provided with an activated carbon adsorption plate 6 and a filter screen 7; a spray box 8, the spray box 8 is fixedly installed on one side of the treatment box 1, and the spray box 8 is used to hold lime water; a spray mechanism, the spray mechanism is provided on the treatment box 1 and the spray box 8 for spraying lime water for desulfurization treatment.

[0021] In this embodiment, the treatment box 1 is used as the main place for flue gas treatment, which is responsible for accommodating and treating the flue gas entering from the combustion furnace. One side of the treatment box 1 is fixedly connected with an air intake pipe 2 to ensure that the flue gas can enter smoothly, and the other side is fixedly connected with an exhaust pipe 4 so that the treated flue gas can be discharged. By providing a closed treatment environment, it is ensured that the flue gas will not leak during the treatment process, and it is convenient for the continuous implementation of subsequent treatment steps. The air intake pipe 2 is used to connect the combustion furnace to introduce the generated flue gas into the treatment box 1. The check valve 3 ensures that the flue gas will not flow back to the combustion furnace under certain conditions (such as the internal pressure of the treatment box 1 is too high). The air intake pipe 2 ensures the smoothness of the flue gas flow, and the check valve 3 increases the safety of the system and prevents possible backflow. The filter box 5 is located Between the air inlet pipe 2 and the treatment box 1, the incoming flue gas is preliminarily filtered by the activated carbon adsorption plate 6 and the filter 7. The activated carbon adsorption plate 6 can effectively adsorb harmful substances in the flue gas, such as organic solvents, oils, toxic substances, etc., and the filter 7 can intercept larger particles. Through double filtration, the pollutant content in the flue gas entering the treatment box 1 is greatly reduced, providing a more favorable environment for subsequent treatment steps. The spray box 8 is used to hold lime water, and the spray mechanism sprays lime water to the flue gas entering the treatment box 1 to achieve desulfurization treatment. The spray mechanism can ensure that the lime water is evenly sprayed in the flue gas, so that it can fully react with the sulfide in the flue gas. By spraying desulfurization, the sulfide in the flue gas is effectively removed, further improving the efficiency and quality of flue gas treatment.

[0022] In a further preferred embodiment of the utility model, the spray mechanism includes a suction pump 9, a liquid inlet pipe 10, a liquid outlet pipe 11 and a plurality of atomizing nozzles 12, the suction pump 9 is fixedly installed on one side of the processing box 1, the liquid inlet pipe 10 is fixedly connected to the liquid inlet end of the suction pump 9, the liquid inlet end of the liquid inlet pipe 10 extends into the spray box 8, the liquid outlet pipe 11 is fixedly connected to the liquid outlet end of the suction pump 9, and the plurality of atomizing nozzles 12 are all arranged on the liquid outlet pipe 11 and extend into the processing box 1.

[0023] In this embodiment, the suction pump 9 is used as a power source to drive the lime water to be sucked from the spray box 8 and sprayed through the liquid outlet pipe 11. The liquid inlet pipe 10 connects the liquid inlet end of the suction pump 9 with the spray box 8 to achieve the suction of lime water. Through the liquid inlet pipe 10, the suction pump 9 can easily obtain the lime water in the spray box 8 to provide a continuous supply of liquid for the spraying process. The liquid outlet pipe 11 connects the liquid outlet end of the suction pump 9 with the atomizing nozzle 12 to transport the lime water to the atomizing nozzle 12. The lime water can form fine droplets, which are in full contact with the flue gas, thereby improving the desulfurization efficiency. The atomizing nozzle 12 atomizes the lime water into fine droplets, so that it can be better mixed and reacted with the flue gas. Through the design of the spray mechanism, the lime water can be evenly sprayed into the flue gas in the treatment box 1, and is in full contact with and reacts with the sulfide in the flue gas, thereby improving the desulfurization efficiency. The atomizing nozzle 12 atomizes the lime water into fine droplets, increases the contact area with the flue gas, increases the reaction rate, and thus reduces energy consumption.

[0024] In a further preferred embodiment of the utility model, a stirring motor 13 is fixedly installed on the top of the spray box 8, and a stirring rod 14 is rotatably installed on the spray box 8. One end of the stirring rod 14 is fixedly connected to the output shaft of the stirring motor 13, and the stirring rod 14 is provided with a plurality of stirring blades.

[0025] In this embodiment, the stirring motor 13 provides power for the stirring mechanism and drives the stirring rod 14 to rotate. The stirring rod 14, as the main component of the stirring mechanism, drives the stirring blades to stir the lime water in the spray box 8 through rotation. The rotation of the stirring rod 14 and the stirring action of the stirring blades can keep the lime water in the spray box 8 uniform and active, prevent the lime water from precipitating or stratifying, and ensure the desulfurization effect. The stirring mechanism can keep the lime water in the spray box 8 evenly distributed through the rotation and stirring action of the stirring rod 14 and the stirring blades, avoid the problem of uneven concentration caused by precipitation or stratification, thereby ensuring the stability and consistency of the desulfurization effect. The stirring mechanism can continuously stir the lime water to prevent it from being left standing for a long time and causing its activity to decrease. Lime water with higher activity can react with sulfides in the flue gas faster, thereby improving the desulfurization efficiency.

[0026] In a further preferred embodiment of the utility model, a threaded barrel 15 is rotatably mounted on the processing box 1, a threaded rod 16 is threadedly mounted on the threaded barrel 15, a support rod is fixedly mounted on the bottom end of the threaded rod 16, a circular scraper 17 is fixedly mounted on the support rod, and the circular scraper 17 is in contact with the inner wall of the processing box 1.

[0027] In this embodiment, the threaded barrel 15 is rotatably installed on the treatment box 1, usually located at the top or side of the treatment box 1, and the threaded rod 16 is threadedly installed on the threaded barrel 15. By rotating the threaded barrel 15, the threaded rod 16 can be driven to move up and down. The annular scraper 17 is fixed to the bottom end of the threaded rod 16 by a support rod and fits tightly with the inner wall of the treatment box 1. As the threaded rod 16 moves up and down, the annular scraper 17 can scrape up and down along the inner wall of the treatment box 1 to remove attached pollutants. By regularly rotating the threaded barrel 15 and driving the annular scraper 17 to scrape along the inner wall of the treatment box 1, the attached pollutants can be effectively removed, the cleanliness of the inside of the treatment box 1 can be maintained, and the flue gas treatment effect can be ensured.

[0028] In a further preferred embodiment of the utility model, a driving motor 18 is fixedly installed on the top of the processing box 1, and a driving gear 19 is fixedly installed on the output shaft of the driving motor 18. A plurality of teeth 20 are provided on the threaded barrel 15, and the teeth 20 are meshed with the driving gear 19.

[0029] In this embodiment, the drive motor 18 is fixedly installed on the top of the processing box 1 to provide power for the entire drive system. By controlling the rotation of the drive motor 18, the rotation speed and direction of the threaded barrel 15 can be accurately controlled. The output shaft of the drive motor 18 is fixedly installed with the drive gear 19 to ensure that the power of the drive motor 18 can be directly transmitted to the drive gear 19. A plurality of teeth 20 are provided on the threaded barrel 15, and these teeth 20 are meshed with the drive gear 19 to ensure that the threaded barrel 15 can be driven to rotate when the drive gear 19 rotates. The threaded barrel 15 drives the threaded rod 16 to move up and down by rotating, thereby driving the annular scraper 17 to clean the inner wall of the processing box 1. Through the cooperation of the drive motor 18 and the drive gear 19, automatic control and precise adjustment of the cleaning mechanism can be achieved.

[0030] In a further preferred embodiment of the utility model, a limiting rod 21 is fixedly installed on the inner wall of one side of the processing box 1, and a groove 22 is opened on one side of the threaded rod 16, and the groove 22 is in sliding contact with one end of the limiting rod 21.

[0031] In this embodiment, the limit rod 21 is fixedly installed on the inner wall of one side of the processing box 1, and is located on the movement path of the threaded rod 16, so as to limit and guide the up and down movement of the threaded rod 16, and ensure that the threaded rod 16 can move stably and accurately along the predetermined path. The groove 22 is opened on one side of the threaded rod 16, and cooperates with the limit rod 21 to limit and guide the movement of the threaded rod 16, and prevent the threaded rod 16 from deflecting or shaking during rotation, which helps to improve the stability and reliability of the cleaning mechanism.

[0032] In a further preferred embodiment of the utility model, the bottom of the processing box 1 is fixedly connected to a waste discharge pipe, and the top of the spray box 8 is fixedly connected to a water injection pipe, and valves are provided on the waste discharge pipe and the water injection pipe.

[0033] In this embodiment, the waste discharge pipe is fixedly connected to the bottom of the treatment box 1, and is used to discharge the treated waste liquid or solid waste in the treatment box 1, ensuring that the waste liquid or solid waste in the treatment box 1 can be discharged smoothly to avoid excessive accumulation that affects the treatment effect or equipment life. The water injection pipe is fixedly connected to the top of the spray box 8, and is used to inject new lime water or other treatment liquid into the spray box 8 to ensure that there is sufficient supply of treatment liquid in the spray box 8 to meet the demand for continuous treatment of flue gas. By controlling the switch of the valve, the discharge of waste liquid and the injection of treatment liquid can be adjusted according to actual needs, making the treatment process more flexible and controllable.

[0034] In summary, compared with related technologies, this device has achieved the overall goal of more efficient, more stable and easier to maintain flue gas treatment. By introducing a stirring mechanism and an automatic cleaning mechanism, it not only improves the treatment efficiency and system stability, but also realizes precise adjustment of the treatment process through automatic control, ensuring the uniformity and consistency of the treatment effect, ensuring that the treatment liquid remains uniform and active, and improving the reaction efficiency with the flue gas. It can remove pollutants in time, keep it clean, avoid affecting the treatment effect, improve the treatment efficiency, system stability, equipment life and safety, and at the same time enhance flexibility and controllability, providing a more efficient, reliable and safe solution for the flue gas treatment of biomass combustion furnaces.

[0035] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A biomass combustion furnace flue gas treatment device, characterized in that: include: A processing box, one side of which is fixedly connected to an air inlet pipe, the air inlet pipe is used to connect to the combustion furnace, a check valve is provided on the air inlet pipe, and one side of the processing box is fixedly connected to an exhaust pipe; A filter box, wherein the air inlet end and the air outlet end of the filter box are respectively connected to the air inlet pipe and the processing box, and an activated carbon adsorption plate and a filter screen are arranged in the filter box; A spray box, which is fixedly mounted on one side of the treatment box and is used to hold lime water; A spray mechanism is provided on the treatment box and the spray box for spraying lime water for desulfurization treatment.

2. The biomass combustion furnace flue gas treatment device according to claim 1, characterized in that: The spray mechanism includes a suction pump, a liquid inlet pipe, a liquid outlet pipe and a plurality of atomizing nozzles. The suction pump is fixedly installed on one side of the processing box. The liquid inlet pipe is fixedly connected to the liquid inlet end of the suction pump. The liquid inlet end of the liquid inlet pipe extends into the spray box. The liquid outlet pipe is fixedly connected to the liquid outlet end of the suction pump. The plurality of atomizing nozzles are arranged on the liquid outlet pipe and extend into the processing box.

3. The biomass combustion furnace flue gas treatment device according to claim 1, characterized in that: A stirring motor is fixedly installed on the top of the spray box, a stirring rod is rotatably installed on the spray box, one end of the stirring rod is fixedly connected to the output shaft of the stirring motor, and a plurality of stirring blades are arranged on the stirring rod.

4. The biomass combustion furnace flue gas treatment device according to claim 1, characterized in that: A threaded barrel is rotatably mounted on the processing box, a threaded rod is threadedly mounted on the threaded barrel, a support rod is fixedly mounted on the bottom end of the threaded rod, a circular scraper is fixedly mounted on the support rod, and the circular scraper fits the inner wall of the processing box.

5. The biomass combustion furnace flue gas treatment device according to claim 4, characterized in that: A driving motor is fixedly mounted on the top of the processing box, a driving gear is fixedly mounted on the output shaft of the driving motor, a plurality of teeth are arranged on the threaded barrel, and the teeth are meshed with the driving gear.

6. The biomass combustion furnace flue gas treatment device according to claim 4, characterized in that: A limiting rod is fixedly mounted on one inner wall of the processing box, and a groove is provided on one side of the threaded rod, and the groove is in sliding contact with one end of the limiting rod.

7. The biomass combustion furnace flue gas treatment device according to claim 1, characterized in that: The bottom of the treatment box is fixedly connected with a waste discharge pipe, and the top of the spray box is fixedly connected with a water injection pipe. Valves are provided on the waste discharge pipe and the water injection pipe.

Images