Biomass boiler flue gas desulfurization spray integrated device
Patent Information
- Application Number
- CN202522379234.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0003]传统的烟气脱硫喷淋装置通常是将脱硫液体通过固定设置的喷淋结构进行喷洒，以实现与烟气的接触和反应，然而，这种固定喷淋的方式存在明显的缺陷，一方面，脱硫液体的喷淋范围相对固定，难以全面且充分地覆盖整个烟气流通区域，导致烟气与脱硫液体的接触面积有限，另一方面，由于喷淋结构的位置固定，烟气在流动过程中，不同区域与脱硫液体的接触程度差异较大，部分区域的烟气容易出现无法有效的脱硫处理，从而影响整体的脱硫效果，难以满足日益严格的环保要求
本实用新型通过输送机构输送的喷淋液体，经过倾斜设计的雾化喷头喷出推动喷淋支管和喷淋总管以塔体为轴心进行转动喷淋，转动式喷淋打破了传统固定喷淋的范围限制，使脱硫液体能在更大范围内与烟气接触，显著提升了两者的接触面积，让脱硫反应更充分，由于接触面积的增大，烟气中的硫化物等污染物能更有效地与脱硫液体发生反应，从而大幅提高了脱硫的效率和效果，更好地满足环保要求。
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Figure CN224793229U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of flue gas desulfurization devices, specifically an integrated spray device for flue gas desulfurization of biomass boilers. Background Technology
[0002] During the operation of biomass boilers, flue gas containing pollutants such as sulfides is generated. If directly emitted, it will cause serious pollution to the atmospheric environment. Therefore, desulfurization treatment of biomass boiler flue gas is an essential step.
[0003] Traditional flue gas desulfurization spraying devices typically spray desulfurization liquid through a fixed spray structure to achieve contact and reaction with the flue gas. However, this fixed spraying method has obvious drawbacks. On the one hand, the spraying range of the desulfurization liquid is relatively fixed, making it difficult to fully and adequately cover the entire flue gas flow area, resulting in a limited contact area between the flue gas and the desulfurization liquid. On the other hand, due to the fixed position of the spray structure, the degree of contact between the flue gas and the desulfurization liquid varies greatly in different areas during the flue gas flow process. Some areas of the flue gas may not be effectively desulfurized, thus affecting the overall desulfurization effect and making it difficult to meet increasingly stringent environmental protection requirements. Utility Model Content
[0004] The purpose of this invention is to provide an integrated desulfurization spray device for biomass boiler flue gas to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a tower body and a spray chamber and a liquid storage chamber opened inside the tower body and interconnected with each other, and a conveying mechanism is provided on one side of the tower body; The spray chamber is equipped with a main spray pipe, and a rotary joint is fitted on the top of the main spray pipe. Multiple spray branch pipes are connected to the surface of the main spray pipe. The multiple spray branch pipes are arranged in a spiral step at equal intervals. Multiple atomizing nozzles are fitted on the surface of the spray branch pipes at equal intervals. The axis of the atomizing nozzles is inclined at a certain angle to the axis of the spray branch pipes. Rotary support mechanisms are symmetrically arranged on the surface of the main spray pipe.
[0006] In a further embodiment, the conveying mechanism includes a conveying pump fixed to the surface of the tower body, the surface of the tower body is equipped with a liquid filter that is connected to the input end of the conveying pump through a pipe, the liquid filter and the liquid storage chamber are connected through a pipe, the output end of the conveying pump is connected to a delivery pipe, one end of the delivery pipe extends into the interior of the spray chamber and is connected to a rotary joint.
[0007] In a further embodiment, the support mechanism includes a rotating seat rotatably connected to the main spray pipe, and four equidistant connecting beams are fixedly connected to the surface of the rotating seat. The other end of each connecting beam is fixedly connected to the inner wall of the spray chamber.
[0008] In a further embodiment, an air inlet pipe communicating with the liquid storage chamber is installed on the surface of the tower body, an air guide plate is fixedly connected inside the spray chamber and at the connection between the spray chamber and the liquid storage chamber, and an exhaust pipe communicating with the spray chamber is installed on the top of the tower body.
[0009] In a further embodiment, a connecting rod is fixedly connected to the bottom of the spray main pipe, and one end of the connecting rod extends into the interior of the liquid storage chamber and is fixedly connected to a stirring rod.
[0010] In a further embodiment, the surface of the tower body is fitted with a liquid inlet pipe, and the bottom of the tower body is fitted with a liquid outlet pipe. Both the liquid inlet pipe and the liquid outlet pipe are connected to the liquid storage chamber, and valves are installed on the surface of both the liquid inlet pipe and the liquid outlet pipe.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a conveying mechanism to transport spray liquid, which is then sprayed through an inclined atomizing nozzle, driving the spray branch pipes and spray main pipe to rotate around the tower body as an axis. This rotating spray breaks the range limitations of traditional fixed spray, allowing the desulfurization liquid to contact the flue gas over a larger area, significantly increasing the contact area between the two and making the desulfurization reaction more complete. Due to the increased contact area, pollutants such as sulfides in the flue gas can react more effectively with the desulfurization liquid, thereby greatly improving the efficiency and effect of desulfurization and better meeting environmental protection requirements. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a partial structural cross-sectional view of an embodiment of the present utility model.
[0013] In the diagram: 1. Tower body; 2. Spray chamber; 3. Liquid storage chamber; 4. Conveying mechanism; 41. Conveying pump; 42. Liquid filter; 43. Liquid delivery pipe; 5. Spray main pipe; 6. Rotary joint; 7. Spray branch pipe; 8. Atomizing nozzle; 9. Rotating support mechanism; 91. Rotating seat; 92. Connecting beam; 10. Air inlet pipe; 11. Air guide plate; 12. Exhaust pipe; 13. Connecting rod; 14. Stirring rod; 15. Liquid inlet pipe; 16. Liquid outlet pipe. Detailed Implementation
[0014] 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.
[0015] This embodiment discloses an integrated spray device for flue gas desulfurization of a biomass boiler, including a tower body 1 and a spray chamber 2 and a liquid storage chamber 3 connected to each other inside the tower body 1. A conveying mechanism 4 is provided on one side of the tower body 1. An air inlet pipe 10 communicating with the liquid storage chamber 3 is installed on the surface of the tower body 1. An air guide plate 11 is fixedly connected inside the spray chamber 2 and at the connection between the spray chamber 2 and the liquid storage chamber 3. An exhaust pipe 12 communicating with the spray chamber 2 is installed at the top of the tower body 1. A liquid inlet pipe 15 is installed on the surface of the tower body 1, and a liquid outlet pipe 16 is installed at the bottom of the tower body 1. Both the liquid inlet pipe 15 and the liquid outlet pipe 16 are connected to the liquid storage chamber 3, and valves are installed on the surfaces of both the liquid inlet pipe 15 and the liquid outlet pipe 16. Figure 1 and Figure 2As shown, tower body 1 serves as the main frame and load-bearing foundation of the entire flue gas desulfurization spray device, integrating all core components. It provides a closed and stable physical space for the entire process of desulfurization, including gas-liquid contact, reaction, liquid storage, and flue gas transportation. The tower body is vertical or has a specific shape, with internal separation of spray chamber 2 and storage chamber 3. Spray chamber 2 is used to achieve sufficient contact and mixing between the desulfurization liquid and the sulfur-containing flue gas, removing sulfides from the flue gas. Located in the upper part of tower body 1, it is directly connected to the storage chamber 3 below and is the key space for desulfurization treatment after the flue gas rises from the storage chamber 3. The spray structure is installed within it. Storage chamber 3 is mainly used to store the desulfurization liquid and also serves as an initial buffer zone for the sulfur-containing flue gas entering the device, temporarily storing the flue gas and guiding it towards the spray chamber. The spray chamber 2, located in the lower part of the tower body 1, is connected to the upper spray chamber 2 and serves as the access point for the air inlet pipe 10. It also connects to the liquid inlet pipe 15 and the liquid outlet pipe 16. The conveying mechanism 4 acts as the power conveying system for the desulfurized liquid, extracting and filtering the desulfurized liquid from the storage chamber 3 before conveying it to the spray structure inside the spray chamber 2. This provides a continuous and clean liquid source for the spray reaction. The conveying mechanism 4 is fixedly installed on one side of the tower body 1. The air inlet pipe 10 serves as the input channel for sulfur-containing flue gas, precisely introducing the sulfur-containing flue gas generated by the biomass boiler into the device to initiate the desulfurization process. The air inlet pipe 10 is mounted on the side surface of the tower body 1, and its end connects to the inside of the storage chamber 3, ensuring that the flue gas directly enters the storage chamber 3. Instead of directly entering the spray chamber 2, the air guide plate 11 functions to guide and distribute the flue gas, preventing the flue gas rising from the liquid storage chamber 3 from concentrating into a specific area of the spray chamber 2. It guides the flue gas to be evenly dispersed across the entire cross-section of the spray chamber 2, improving gas-liquid contact efficiency. The air guide plate 11 is fixedly installed inside the spray chamber 2, precisely at the connection between the spray chamber 2 and the liquid storage chamber 3, i.e., the transition interface where the flue gas enters the spray chamber 2 from the liquid storage chamber 3. It is fixedly connected to the inner wall of the tower body 1, covering the flow section at the bottom of the spray chamber 2. The exhaust pipe 12 serves as the output channel for the clean flue gas after desulfurization, discharging the flue gas treated by the spray chamber 2 and meeting sulfide standards from the tower body 1 for subsequent emission or secondary treatment systems. The exhaust pipe 12 is mounted on the top of the tower body 1 and is directly connected to the interior of the spray chamber 2. The connection is the terminal outlet for flue gas circulation within the device. The inlet pipe 15 serves as a replenishment channel for desulfurization liquid, adding fresh desulfurization liquid to the storage chamber 3 or replenishing liquid losses caused by spraying consumption and waste liquid discharge, ensuring continuous operation of the device. The inlet pipe 15 is mounted on the side surface of the tower body 1, with the end of the pipe connected to the inside of the storage chamber 3. Valves are installed on the surface of the pipe to control the start and stop of replenishment and the flow rate. The outlet pipe 16 serves as a discharge channel for waste liquid after the reaction, discharging the waste liquid that has become ineffective after participating in the desulfurization reaction and contains impurities or pollutants from the storage chamber 3, facilitating subsequent waste liquid treatment, and preventing waste liquid from accumulating in the chamber and affecting the desulfurization effect. The outlet pipe 16 is mounted at the bottom of the tower body 1, with the pipe connected to the inside of the storage chamber 3. Valves are installed on the surface of the pipe to control the start and stop of discharge and the speed.
[0016] More specifically, the spray chamber 2 contains a main spray pipe 5, with a rotary joint 6 mounted on its top. Multiple branch spray pipes 7 are connected to the surface of the main spray pipe 5, arranged in a spiral stepped pattern at equal intervals. Multiple atomizing nozzles 8 are mounted on the surface of each branch spray pipe 7 at equal intervals, with the axis of each atomizing nozzle 8 at a certain angle to the axis of the branch spray pipe 7. A rotating support mechanism 9 is symmetrically arranged on the surface of the main spray pipe 5. Figure 1 and Figure 2 As shown, the main spray pipe 5 serves as the main transport channel for the desulfurization liquid, receiving the desulfurization liquid from the transport mechanism 4 and distributing it to each spray branch pipe 7. It also provides the installation carrier and rotation support foundation for the spray branch pipes 7. The main spray pipe 5 is vertically positioned inside the spray chamber 2 along the axis of the tower body 1, and is the core main pipe of the spray system. The rotary joint 6 connects static liquid transport and dynamic spraying, ensuring a stable static transport of desulfurization liquid from the transport pipe 43 to the main spray pipe 5 without hindering the rotation of the main spray pipe 5. To prevent liquid leakage, the rotary joint 6 is precisely assembled at the top of the spray main pipe 5. Its upper end connects to the liquid delivery pipe 43 of the conveying mechanism 4, and its lower end is sealed to the spray main pipe 5. It serves as a transitional component between liquid delivery and structural rotation. The spray branch pipe 7 acts as a diversion and spraying carrier for the desulfurization liquid, further distributing the liquid transported by the spray main pipe 5 to each atomizing nozzle 8. Its spiral stepped arrangement expands the spray coverage area. The nozzles are distributed equidistantly in a spiral stepped pattern along the surface of the spray main pipe 5, not horizontally or vertically, but... A spiral stepped structure is formed around the spray main pipe 5, with one end connected to the interior of the spray main pipe 5 and the other end extending into the interior space of the spray chamber 2. It is a key branch connecting the spray main pipe 5 and the atomizing nozzles 8. The atomizing nozzles 8 atomize and disperse the desulfurization liquid, transforming the liquid transported by the branch pipes into fine droplets, significantly increasing the contact area between the desulfurization liquid and the flue gas, and improving the desulfurization reaction efficiency. The tilt angle design can assist in driving the spray main pipe 5 to rotate. The atomizing nozzles 8 are equidistantly mounted on the surface of each spray branch pipe 7, with the nozzle axis and the axis of the spray branch pipe 7 at a certain tilt angle, neither perpendicular nor parallel. The droplet spray direction forms an angle with the branch pipe, and the tilt direction of all nozzles is consistent to ensure that the rotational power is in the same direction. The rotating support mechanism 9 provides stable rotational support for the spray main pipe 5, limiting the radial displacement of the spray main pipe 5 during rotation, and reducing the frictional resistance when the main pipe rotates, ensuring its smooth and stable rotation. Two rotating support mechanisms 9 are symmetrically arranged on the surface of the spray main pipe 5, located at the top and bottom of the surface of the spray main pipe 5, respectively.
[0017] Furthermore, the conveying mechanism 4 includes a conveying pump 41 fixed to the surface of the tower body 1. A liquid filter 42 is mounted on the surface of the tower body 1 and is connected to the input end of the conveying pump 41 via a pipe. The liquid filter 42 and the storage chamber 3 are connected via a pipe. The output end of the conveying pump 41 is connected to a delivery pipe 43, one end of which extends into the interior of the spray chamber 2 and connects to the rotary joint 6. Figure 1 and Figure 2 As shown, the transfer pump 41 is directly connected to the outer surface of the tower body 1 through a fixed structure. Its input end is connected to the liquid filter 42 through a pipe, and its output end is connected to one end of the delivery pipe 43 through a pipe. It is the core power component of the conveying mechanism 4. As the power source for the desulfurization liquid conveying, the transfer pump 41 draws the desulfurization liquid filtered by the liquid filter 42 and delivers it to the delivery pipe 43 by generating negative pressure. This provides continuous power for the liquid to be conveyed from the storage chamber 3 to the spray chamber 2, ensuring that the desulfurization liquid can stably reach the spray main pipe 5. The liquid filter 42 is mounted on the outer surface of the tower body 1, located in the liquid flow path between the storage chamber 3 and the transfer pump 41. One end is connected to the inside of the storage chamber 3 through a pipe, and the other end is connected to the input end of the transfer pump 41 through a pipe, forming a liquid pretreatment path of storage chamber 3 → liquid filter 42 → transfer pump 41. The liquid filter 42... The desulfurization liquid flowing out of the storage chamber 3 is filtered to remove impurities such as precipitates and biomass ash produced by the reaction, preventing impurities from clogging the subsequent delivery pipe 43 and atomizing nozzle 8, ensuring the smooth operation of the spray system, and reducing component wear. One end of the delivery pipe 43 is sealed and connected to the output end of the delivery pump 41, and the other end extends along the outside or inside of the tower body 1, eventually penetrating the wall of the tower body 1 and entering the interior of the spray chamber 2, and is sealed and connected to the rotary joint 6 at the top of the spray main pipe 5. It is the channel carrier for transporting the desulfurization liquid from the outside of the tower body 1 to the interior of the spray chamber 2. The delivery pipe 43, as the delivery pipeline for the desulfurization liquid, accurately delivers the clean desulfurization liquid pressurized by the delivery pump 41 to the rotary joint 6 of the spray chamber 2, and then introduces it into the spray main pipe 5, realizing the connection of the liquid from the delivery mechanism 4 to the spray system, ensuring no leakage and no significant pressure loss during the liquid transportation process.
[0018] Finally, the support mechanism includes a rotating seat 91 rotatably connected to the spray main pipe 5. Four equidistant connecting beams 92 are fixedly connected to the surface of the rotating seat 91. The other end of each connecting beam 92 is fixedly connected to the inner wall of the spray chamber 2. A connecting rod 13 is fixedly connected to the bottom of the spray main pipe 5. One end of the connecting rod 13 penetrates into the interior of the liquid storage chamber 3 and is fixedly connected to a stirring rod 14. Figure 2As shown, the rotating seat 91 and the spray main pipe 5 are rotatably connected, and the rotating seat 91 has a rotatable fit with the spray main pipe 5. Low-friction rotation is preferably achieved through structures such as waterproof bearings. The outer side is fixedly connected to the connecting beam 92. The rotating seat 91, as the core component supporting the rotation of the spray main pipe 5, directly contacts the spray main pipe 5, limiting the radial offset and swaying of the spray main pipe 5 and preventing it from colliding with the inner wall of the spray chamber 2. It also ensures smooth rotation of the spray main pipe 5 through low-friction fit, providing a basic support for the stable rotation of the spray system. Four connecting beams 92 are provided, equidistantly radially distributed around the rotating seat 91. One end is fixedly connected to the outer surface of the rotating seat 91, such as by welding or bolting, and the other end extends horizontally to the inner wall of the spray chamber 2 and is fixedly connected to the inner wall of the spray chamber 2. The connecting beam 92 acts as a support and transmission component, connecting the rotating seat 91... The supporting force of the tower body 1 is transmitted to the inner wall of the spray chamber 2. A stable supporting frame is formed by four equidistant structures, which distribute the weight of the rotating seat 91 and the spray main pipe 5 and the force during rotation to the tower body 1, ensuring that the position of the rotating seat 91 is fixed, thereby ensuring the coaxiality and stability of the spray main pipe 5 during rotation. One end of the connecting rod 13 is fixedly connected to the bottom of the spray main pipe 5, and the other end extends vertically downward, penetrating into the interior of the liquid storage chamber 3, and finally extends into the interior of the liquid storage chamber 3 and is fixedly connected to the stirring rod 14. It is a rigid connection structure. The stirring rod 14 is fixed horizontally or at a specific angle at the end of the connecting rod 13 that extends into the liquid storage chamber 3. The entire rod is located in the liquid inside the liquid storage chamber 3, completely or partially submerged in the desulfurization liquid. It rotates synchronously with the connecting rod 13, realizing the stirring of the desulfurization liquid in the liquid storage chamber 3, which can prevent the desulfurization liquid from precipitating.
[0019] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.
[0020] 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. An integrated spray device for desulfurization of flue gas from a biomass boiler, comprising a tower body (1) and a spray chamber (2) and a liquid storage chamber (3) disposed inside the tower body (1) and interconnected therewith, characterized in that: A conveying mechanism (4) is provided on one side of the tower body (1); The spray chamber (2) is provided with a spray main pipe (5). A rotary joint (6) is installed on the top of the spray main pipe (5). Multiple spray branch pipes (7) are connected to the surface of the spray main pipe (5). The multiple spray branch pipes (7) are arranged in a spiral step at equal intervals. Multiple atomizing nozzles (8) are installed on the surface of the spray branch pipes (7). The axis of the atomizing nozzles (8) is at a certain angle to the axis of the spray branch pipes (7). Rotary support mechanisms (9) are symmetrically arranged on the surface of the spray main pipe (5).
2. The integrated desulfurization spray device for biomass boiler flue gas according to claim 1, characterized in that: The conveying mechanism (4) includes a conveying pump (41) fixed to the surface of the tower body (1). The surface of the tower body (1) is equipped with a liquid filter (42) that is connected to the input end of the conveying pump (41) through a pipe. The liquid filter (42) and the liquid storage chamber (3) are connected through a pipe. The output end of the conveying pump (41) is connected to a delivery pipe (43). One end of the delivery pipe (43) extends into the interior of the spray chamber (2) and is connected to the rotary joint (6).
3. The integrated desulfurization spray device for biomass boiler flue gas according to claim 1, characterized in that: The support mechanism includes a rotating seat (91) rotatably connected to the spray main pipe (5). Four equidistant connecting beams (92) are fixedly attached to the surface of the rotating seat (91). The other end of the connecting beams (92) is fixedly connected to the inner wall of the spray chamber (2).
4. The integrated desulfurization spray device for biomass boiler flue gas according to claim 1, characterized in that: An air inlet pipe (10) communicating with the liquid storage chamber (3) is installed on the surface of the tower body (1). An air guide plate (11) is fixedly connected inside the spray chamber (2) and at the connection between the spray chamber (2) and the liquid storage chamber (3). An exhaust pipe (12) communicating with the spray chamber (2) is installed on the top of the tower body (1).
5. The integrated desulfurization spray device for biomass boiler flue gas according to claim 1, characterized in that: A connecting rod (13) is fixedly connected to the bottom of the spray main pipe (5). One end of the connecting rod (13) extends into the interior of the liquid storage chamber (3) and is fixedly connected to a stirring rod (14).
6. The integrated desulfurization spray device for biomass boiler flue gas according to claim 1, characterized in that: The surface of the tower body (1) is equipped with a liquid inlet pipe (15), and the bottom of the tower body (1) is equipped with a liquid outlet pipe (16). Both the liquid inlet pipe (15) and the liquid outlet pipe (16) are connected to the liquid storage chamber (3), and valves are installed on the surface of both the liquid inlet pipe (15) and the liquid outlet pipe (16).