A desulfurization device for exhaust gas from a thermal power plant
By introducing electric lifting rods, speed reduction plates, and nozzle designs into the flue gas desulfurization device of thermal power plants, the flow rate and spray range of the flue gas are adjusted, solving the problem of low desulfurization efficiency caused by the strong fluidity of the flue gas and achieving a more efficient desulfurization effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUODIAN JIUJIANG GENERATING CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-02
Smart Images
Figure CN224308133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas treatment technology in thermal power plants, specifically a desulfurization device for waste gas from thermal power plants. Background Technology
[0002] Thermal power plant exhaust gas refers to the flue gas produced when thermal power plants burn fossil fuels such as coal and natural gas. These exhaust gases usually contain a large number of harmful substances, such as sulfur dioxide, nitrogen oxides, carbon dioxide, and particulate matter. The emission of exhaust gases has a negative impact on the environment, air quality, and human health. Among them, sulfur dioxide is one of the main pollutants in thermal power plant exhaust gas. It is acidic and easily reacts with water vapor to form acid rain, which pollutes water sources and soil, and affects plants and buildings. Therefore, it is necessary to desulfurize thermal power plant exhaust gas.
[0003] A Chinese patent discloses a desulfurization device for exhaust gas from a thermal power plant (authorization announcement number CN211886120U). This patented technology is simple in design and easy to operate, enabling the gas to meet emission standards without polluting the air. It can also clean the compounds at the bottom of the desulfurization tank, making it easier to clean the bottom of the desulfurization tank.
[0004] However, most existing desulfurization methods for thermal power plant exhaust gas involve directly introducing the exhaust gas into a desulfurization tower to contact the sprayed limestone liquid for desulfurization. Due to air flow, the exhaust gas quickly flows out of the desulfurization tower, resulting in inefficient and incomplete desulfurization and low practicality. For example, the aforementioned comparative document uses this method of directly introducing the thermal power plant exhaust gas into the desulfurization tower. Therefore, those skilled in the art provide a thermal power plant exhaust gas desulfurization device to solve the problems mentioned in the background art. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a desulfurization device for exhaust gas from thermal power plants, thereby solving the problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization device for waste gas from a thermal power plant, comprising a desulfurization tower, a material box on the upper surface of the desulfurization tower, a liquid pump installed on one side of the material box, a connecting pipe connected to the outlet end of the liquid pump, a flexible hose connected to the lower end of the connecting pipe, a drain pipe connected to the lower end of the flexible hose, nozzles symmetrically arranged on the lower surface of the drain pipe, a motor installed on the outside of the desulfurization tower, a rotating shaft connected to the drive end of the motor, a speed-reducing plate installed inside the desulfurization tower, a speed-reducing hole opened inside the speed-reducing plate, an electric lifting rod installed on the upper surface of the desulfurization tower, and a baffle slidably installed on one side of the speed-reducing plate.
[0007] Preferably, an air inlet pipe is provided on one side of the desulfurization tower, and an air outlet pipe is provided on the other side of the desulfurization tower, and a discharge pipe is provided on the lower surface of the desulfurization tower.
[0008] Preferably, the desulfurization tower has two sets of guide rods symmetrically arranged inside, and the baffle is slidably installed on the outside of the two sets of guide rods.
[0009] Preferably, the fixed end of the electric lifting rod is installed on the upper surface of the desulfurization tower, and the telescopic end of the electric lifting rod is connected to the upper surface of the baffle.
[0010] Preferably, a positioning sleeve is fitted around the outside of the drain pipe, and a connecting rod is installed on the upper surface of the positioning sleeve, with the upper end of the connecting rod installed outside the rotating shaft.
[0011] Preferably, the upper surface of the material box is also provided with a feed pipe, the feed port of the liquid pump is connected to a liquid extraction pipe, one end of the liquid extraction pipe is located inside the material box, and at least six nozzles are symmetrically arranged on the lower surface of the discharge pipe.
[0012] Beneficial effects
[0013] This utility model provides a desulfurization device for exhaust gas from thermal power plants. Compared with the prior art, it has the following advantages:
[0014] 1. The flue gas desulfurization device of this thermal power plant uses an electric lifting rod, a speed reduction plate, a speed reduction hole, a baffle, and a guide rod. The speed reduction hole in the speed reduction plate can reduce the flow rate of the flue gas, so that the flue gas can be desulfurized better inside the desulfurization tower. At the same time, the operation of the electric lifting rod will cause the speed reduction plate to rise and fall, thereby adjusting the area of the speed reduction hole, so as to achieve better desulfurization.
[0015] 2. The desulfurization device for thermal power plant exhaust gas uses a motor to rotate the rotating shaft, which in turn causes the drain pipe in the positioning sleeve connected by the connecting rod to rotate back and forth. This allows for comprehensive spraying of the thermal power plant exhaust gas entering the desulfurization tower to achieve the purpose of desulfurization. The device has a simple structure, is easy to operate, and is highly practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a desulfurization device for waste gas from a thermal power plant.
[0017] Figure 2 This is a schematic diagram of the structure of a liquid discharge pipe in a flue gas desulfurization device for a thermal power plant.
[0018] Figure 3 This is a schematic diagram of the internal structure of a baffle in a flue gas desulfurization device for a thermal power plant.
[0019] In the diagram: 1. Desulfurization tower; 11. Outlet pipe; 12. Inlet pipe; 13. Discharge pipe; 2. Material box; 21. Liquid pump; 22. Connecting pipe; 23. Hose; 24. Discharge pipe; 241. Nozzle; 3. Electric lifting rod; 31. Speed reduction plate; 311. Speed reduction hole; 32. Baffle; 33. Guide rod; 4. Motor; 41. Rotating shaft; 42. Positioning sleeve; 421. Connecting rod. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-3 This utility model provides a technical solution: a desulfurization device for waste gas from a thermal power plant, including a desulfurization tower 1. A material box 2 is provided on the upper surface of the desulfurization tower 1. A liquid pump 21 is installed on one side of the material box 2. The liquid outlet end of the liquid pump 21 is connected to a connecting pipe 22. The lower end of the connecting pipe 22 is connected to a flexible hose 23. The lower end of the flexible hose 23 is connected to a drain pipe 24. Spray nozzles 241 are symmetrically arranged on the lower surface of the drain pipe 24. A motor 4 is installed on the outside of the desulfurization tower 1. The drive end of the motor 4 is connected to a rotating shaft 41. A speed reduction plate 31 is also installed inside the desulfurization tower 1. A speed reduction hole 311 is opened inside the speed reduction plate 31. An electric lifting rod 3 is installed on the upper surface of the desulfurization tower 1. A baffle 32 is slidably installed on one side of the speed reduction plate 31. This arrangement utilizes the speed reduction hole 311 opened inside the speed reduction plate 31 to reduce the flow rate of the discharged waste gas, so that the waste gas can be better desulfurized inside the desulfurization tower 1.
[0022] exist Figure 3 In the desulfurization tower 1, an air inlet pipe 12 is provided on one side and an air outlet pipe 11 is provided on the other side. A discharge pipe 13 is provided on the lower surface of the desulfurization tower 1. This external configuration allows the exhaust gas from the thermal power plant to enter the interior of the desulfurization tower 1 through the air inlet pipe 12 and be discharged outward through the air outlet pipe 11 after desulfurization. The waste generated during desulfurization will be discharged outward through the discharge pipe 13.
[0023] exist Figure 3In the desulfurization tower 1, two sets of guide rods 33 are symmetrically arranged inside. Baffles 32 are slidably installed on the outside of the two sets of guide rods 33. The fixed end of the electric lifting rod 3 is installed on the upper surface of the desulfurization tower 1, and the telescopic end of the electric lifting rod 3 is connected to the upper surface of the baffle 32. This arrangement allows the baffle 32 to slide on one side of the speed reduction plate 31 when the electric lifting rod 3 is working. This adjusts the area of the speed reduction hole 311, thereby reducing the speed of the exhaust gas passing through the speed reduction hole 311 and enabling better desulfurization of the exhaust gas from the thermal power plant.
[0024] exist Figure 2 and Figure 3 In the middle section: a positioning sleeve 42 is sleeved on the outside of the drain pipe 24, and a connecting rod 421 is installed on the upper surface of the positioning sleeve 42. The upper end of the connecting rod 421 is installed on the outside of the rotating shaft 41. A feed pipe is also provided on the upper surface of the material box 2. A suction pipe is connected to the feed port of the suction pump 21. One end of the suction pipe is located inside the material box 2. At least six nozzles 241 are symmetrically arranged on the lower surface of the drain pipe 24. This arrangement uses the operation of the motor 4 to make the rotating shaft 41 rotate, and when rotating, the drain pipe 24 can rotate back and forth, so as to perform desulfurization work on the thermal power plant exhaust gas entering the desulfurization tower 1.
[0025] During operation (or use), the exhaust gas from the thermal power plant is introduced into the desulfurization tower 1 through the inlet pipe 12 via external equipment. After entering, the limestone slurry in the material tank 2 is extracted by the liquid pump 21 and enters the drain pipe 24 through the connecting pipe 22 and the hose 23. Finally, it is sprayed outward through the nozzle 241 to desulfurize the exhaust gas from the thermal power plant entering the desulfurization tower 1. During the spraying, the motor 4 operates, causing the rotating shaft 41 to rotate, which in turn causes the drain pipe 24 to rotate back and forth. The thermal power plant exhaust gas entering the desulfurization tower 1 is desulfurized. The flow velocity of the thermal power plant exhaust gas is reduced by the de-velocity hole 311 opened inside the de-velocity plate 31, so that the thermal power plant exhaust gas can be desulfurized better. At the same time, the operation of the electric lifting rod 3 will cause the baffle 32 to slide on one side of the de-velocity plate 31, thereby adjusting the area of the de-velocity hole 311, so as to reduce the speed of the exhaust gas passing through the de-velocity hole 311, thereby improving the desulfurization of the thermal power plant exhaust gas.
[0026] All electrical components used in this invention are existing known electrical devices, all of which are connected to an external main controller and external power supply, and all of which can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. The appropriate model is selected according to actual use. Therefore, the structure, circuit, and control principle of the device are not described in detail here.
[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
Claims
1. A desulfurization device for waste gas from a thermal power plant, comprising a desulfurization tower (1), characterized in that: The desulfurization tower (1) is provided with a material box (2) on its upper surface. A liquid pump (21) is installed on one side of the material box (2). The liquid outlet of the liquid pump (21) is connected to a connecting pipe (22). The lower end of the connecting pipe (22) is connected to a hose (23). The lower end of the hose (23) is connected to a drain pipe (24). Spray nozzles (241) are symmetrically arranged on the lower surface of the drain pipe (24). A motor (4) is installed on the outside of the desulfurization tower (1). A rotating shaft (41) is connected to the drive end of the motor (4). A speed reduction plate (31) is also installed inside the desulfurization tower (1). A speed reduction hole (311) is opened inside the speed reduction plate (31). An electric lifting rod (3) is installed on the upper surface of the desulfurization tower (1). A baffle (32) is slidably installed on one side of the speed reduction plate (31).
2. The desulfurization device for waste gas from a thermal power plant according to claim 1, characterized in that: The desulfurization tower (1) has an air inlet pipe (12) on one side and an air outlet pipe (11) on the other side. The desulfurization tower (1) has a discharge pipe (13) on its lower surface.
3. The desulfurization device for waste gas from a thermal power plant according to claim 1, characterized in that: The desulfurization tower (1) is symmetrically equipped with two sets of guide rods (33) inside, and the baffle (32) is slidably installed on the outside of the two sets of guide rods (33).
4. The desulfurization device for waste gas from a thermal power plant according to claim 1, characterized in that: The fixed end of the electric lifting rod (3) is installed on the upper surface of the desulfurization tower (1), and the telescopic end of the electric lifting rod (3) is connected to the upper surface of the baffle (32).
5. The desulfurization device for waste gas from a thermal power plant according to claim 1, characterized in that: The drain pipe (24) is fitted with a positioning sleeve (42), and a connecting rod (421) is installed on the upper surface of the positioning sleeve (42). The upper end of the connecting rod (421) is installed on the outside of the rotating shaft (41).
6. The desulfurization device for waste gas from a thermal power plant according to claim 1, characterized in that: The upper surface of the material box (2) is also provided with a feed pipe, the feed port of the liquid pump (21) is connected to a liquid extraction pipe, one end of the liquid extraction pipe is located inside the material box (2), and at least six nozzles (241) are symmetrically arranged on the lower surface of the drain pipe (24).