A waste incineration power plant flue gas treatment device with hierarchical purification
Patent Information
- Application Number
- CN202522639712.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-12
AI Technical Summary
In existing technologies, the purification effect of flue gas generated during waste incineration power generation is not good, and simple spray purification methods are difficult to completely remove impurities and harmful substances in the flue gas.
It adopts a three-stage purification method, including a first-stage filter to remove large particulate impurities, a second-stage spray to remove fine impurities, and a third-stage chemical reaction to remove harmful substances, through a combination of filter, spray and chemical reaction treatment.
It achieves three-stage purification of flue gas, effectively removing large particulate impurities, fine impurities, and harmful substances, thus improving the flue gas purification effect.
Smart Images
Figure CN224925848U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flue gas purification technology, specifically relating to a staged purification flue gas treatment device for waste incineration power plants. Background Technology
[0002] Waste is divided into recyclable and non-recyclable waste. Recyclable waste is processed through various recycling stations, while non-recyclable waste can be transported to incineration power plants for incineration and power generation.
[0003] During the waste-to-energy incineration process, a large amount of flue gas is generated, which contains a large number of impurities and harmful substances. Simple spraying purification cannot completely purify the flue gas. Therefore, we propose a graded purification flue gas treatment device for waste-to-energy incineration plants. Through a three-stage purification method, the flue gas from waste incineration can be effectively purified. Utility Model Content
[0004] The purpose of this invention is to provide a graded purification flue gas treatment device for waste incineration power plants to solve the problems existing in the background technology.
[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A staged purification flue gas treatment device for waste incineration power plants includes a tower body, a flue gas outlet at the top of the tower body, an air inlet at the bottom of the tower body, a primary purification mechanism installed at the air inlet, and a secondary purification mechanism and a tertiary purification mechanism arranged sequentially from bottom to top inside the tower body. The primary purification mechanism is a filter box with a filter screen installed inside. The secondary purification unit includes: A water inlet pipe is fixedly mounted to the tower body, and a water collection cylinder is installed at the top of the water inlet pipe; Multiple nozzles are evenly installed on the side of the water collection cylinder; The three-level purification system includes: A purification liquid tank, which is fixed to the upper side of the tower body and is filled with purification liquid; A vertical air pipe is connected to the bottom of the purified liquid tank at its lower side. The lower end of the vertical air pipe is provided with a conical shell that expands outward to match the tower body. The conical shell is located above the secondary purification mechanism. Multiple branch pipes, each of which is connected to the upper side of the vertical air pipe and extends to the lower side of the purified liquid tank.
[0006] As a further limitation of the present invention, a drainage outlet is provided at the bottom of the tower body, and multiple support feet are fixed on the lower outer wall of the tower body.
[0007] As a further limitation of the present invention, the purification liquid tank is provided with a liquid inlet and a liquid outlet on its upper and lower sides, respectively, and both the liquid inlet and the liquid outlet are provided with a switch valve.
[0008] As a further limitation of the present invention, the vertical air pipe and the purified liquid tank are rotatably connected by a bearing, and a drive motor is also installed inside the tower body. The output end of the drive motor and the lower side of the vertical air pipe are both equipped with pulleys, and the two pulleys are connected by belt drive.
[0009] As a further limitation of the present invention, a rotating joint is installed at the bottom of the water collecting cylinder, the water inlet pipe is connected to the rotating joint, and the conical shell is connected and fixed to the water collecting cylinder by multiple connecting rods.
[0010] This invention achieves three-stage purification of flue gas by first removing large particles, then using a spraying method to remove fine impurities, and finally using a chemical reaction to remove harmful substances from the flue gas, thus achieving a good flue gas purification effect. Attached Figure Description
[0011] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.
[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of the internal cross-sectional structure of Embodiment 2 of this utility model; The symbols for the main components are explained below: Tower body 100, flue gas outlet 101, air inlet 102, drain outlet 103, support leg 104, filter box 110, water inlet pipe 120, water collection cylinder 121, spray pipe 122, purified liquid tank 130, vertical air pipe 131, conical shell 132, branch pipe 133, liquid filling port 134, liquid drain outlet 135, switch valve 136, drive motor 140, pulley 141, rotary joint 150, connecting rod 151. Detailed Implementation
[0013] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] Example 1: Please see Figure 1 and Figure 2 The waste incineration power plant flue gas treatment equipment shown includes a tower body 100, a flue gas outlet 101 at the top of the tower body 100, an air inlet 102 at the bottom of the tower body 100, a primary purification mechanism installed in the air inlet 102, and a secondary purification mechanism and a tertiary purification mechanism arranged sequentially from bottom to top inside the tower body 100. The primary purification mechanism is a filter box 110 with a filter screen installed inside. Level 2 cleanroom facilities include: Water inlet pipe 120 is fixedly mounted to tower body 100, and a water collection cylinder 121 is installed on the top of water inlet pipe 120; Multiple nozzles 122 are evenly installed on the side of the water collection cylinder 121; Level 3 cleanroom facilities include: Purification liquid tank 130 is fixed on the upper side of tower body 100 and is filled with purification liquid. The vertical air pipe 131 is connected to the bottom of the purification liquid tank 130 at its lower side. The lower end of the vertical air pipe 131 is provided with a conical shell 132 that expands outward to match the tower body 100. The conical shell 132 is located above the secondary purification mechanism. Multiple branch pipes 133 are connected to the upper side of the vertical air pipe 131 and extend to the lower side of the purified liquid tank 130.
[0015] Before using this equipment, connect the filter box 110 of the primary purification unit to the flue gas emission pipe, and simultaneously connect the water inlet pipe 120 of the secondary purification unit to the water pump pipeline. Figure 1 and Figure 2 As shown, flange connections can be used to ensure the stability of the connection; This equipment can achieve a three-stage purification effect when purifying flue gas, as detailed below: When high-temperature flue gas enters the filter box 110 set in the primary purification unit, large particulate impurities in the flue gas can be filtered out through the filter screen inside the filter box 110. At the same time, an activated carbon layer can also be added to the filter box 110 to improve the removal effect of large particulate impurities, thereby completing the initial removal of impurities from the flue gas. The high-temperature flue gas, after having large particulate impurities removed by the primary purification mechanism, enters the tower body 100 through the air inlet 102 and flows upward. At this time, water enters through the water inlet pipe 120 of the secondary purification mechanism, and flows and is sprayed out through the water collection cylinder 121 to each spray pipe 122. Figure 2As shown, each nozzle 122 is equipped with an atomizing nozzle to spray water mist, which cools the rising high-temperature flue gas and removes fine impurities such as dust from the flue gas by adhering the water mist, thus completing the fine removal of impurities from the flue gas. After fine purification, the flue gas flows into the vertical air pipe 131 after being collected by the conical shell 132 of the three-stage purification mechanism. Then, it is poured into the purification liquid tank 130 through each branch pipe 133. The purification liquid contained in the purification liquid tank 130 reacts with the harmful substances in the flue gas, thereby removing the harmful substances in the flue gas and completing the removal of harmful substances from the flue gas. Finally, the flue gas, after being finely cleaned and free of harmful substances, is discharged through the upper exhaust port 101.
[0016] This invention achieves three-stage purification of flue gas by first removing large particles, then using a spraying method to remove fine impurities, and finally using a chemical reaction to remove harmful substances from the flue gas, thus achieving a good flue gas purification effect.
[0017] Other structural descriptions of the technical solution in this embodiment, such as Figure 1 and Figure 2 As shown, the details are as follows: ① A drain outlet 103 is provided at the bottom of the tower body 100, and multiple support feet 104 are fixed on the lower outer wall of the tower body 100. The drain outlet 103 allows the spray water to flow out through the drain outlet 103. Specifically, the drain outlet 103 can be connected to the recycling tank to realize the recycling of the spray water, while the multiple support feet 104 can stably install and fix the tower body 100.
[0018] ②The purification liquid tank 130 is equipped with a liquid inlet 134 and a liquid outlet 135 on the upper and lower sides respectively; the liquid inlet 134 and the liquid outlet 135 enable people to add purification liquid to the purification liquid tank 130 or discharge waste liquid after flue gas purification.
[0019] ③ Both the liquid inlet 134 and the liquid outlet 135 are equipped with a switch valve 136; by setting the switch valve 136, the liquid inlet 134 and the liquid outlet 135 can be opened and closed conveniently. The switch valve 136 can be a manual valve or a solenoid valve according to actual needs.
[0020] Example 2: This embodiment is a further improvement on Embodiment 1, to enable the secondary purification mechanism to fully perform dust suppression through spraying, and to allow the tertiary purification mechanism to react more completely, such as... Figure 3 and Figure 4 As shown, the details are as follows: The vertical air pipe 131 is rotatably connected to the purified liquid tank 130 by a bearing. The tower body 100 is also equipped with a drive motor 140. The output end of the drive motor 140 and the lower side of the vertical air pipe 131 are both equipped with pulleys 141. The two pulleys 141 are connected by belt drive. A rotating joint 150 is installed at the bottom of the water collection cylinder 121. The water inlet pipe 120 is connected to the rotating joint 150. The conical shell 132 is connected and fixed to the water collection cylinder 121 by multiple connecting rods 151.
[0021] like Figure 3 As shown, the drive motor 140 is installed in the space between the conical shell 132 and the tower body 100, which can prevent the flue gas from corroding the drive motor 140. When the drive motor 140 starts, the pulley 141 at the output end of the drive motor 140 rotates, which causes the pulley 141 of the vertical air pipe 131 to rotate through the belt drive, thereby causing the entire vertical air pipe 131 to rotate. The rotation of the vertical air pipe 131 causes each branch pipe 133 to rotate and the conical shell 132 to rotate. Since the conical shell 132 is connected to the water collection cylinder 121 through multiple connecting rods 151, and the water collection cylinder 121 is connected to the water inlet pipe 120 through the rotating joint 150, the water collection cylinder 121 and its various nozzles 122 can rotate. When each branch pipe 133 rotates, the flue gas enters the purification liquid tank 130 more evenly through the branch pipe 133, and the agitation of each branch pipe 133 enables the purification liquid to fully react with the harmful substances in the flue gas. When the water collection cylinder 121 and its various spray pipes 122 rotate, the water spraying effect can be more thorough and uniform, thereby ensuring the dust suppression effect of spraying.
[0022] Therefore, after the above improvements, the secondary and tertiary purification mechanisms are linked, achieving better secondary spray purification and tertiary chemical reaction purification effects, thereby improving the purification effect of flue gas.
[0023] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A staged purification flue gas treatment device for waste incineration power plants, comprising a tower body, wherein a flue gas outlet is provided at the top of the tower body and an air inlet is provided at the bottom of the tower body, characterized in that: The air inlet is equipped with a primary purification mechanism. The tower body is equipped with a secondary purification mechanism and a tertiary purification mechanism from bottom to top. The primary purification mechanism is a filter box with a filter screen installed inside. The secondary purification unit includes: A water inlet pipe is fixedly mounted to the tower body, and a water collection cylinder is installed at the top of the water inlet pipe; Multiple nozzles are evenly installed on the side of the water collection cylinder; The three-level purification system includes: A purification liquid tank, which is fixed to the upper side of the tower body and is filled with purification liquid; A vertical air pipe is connected to the bottom of the purified liquid tank at its lower side. The lower end of the vertical air pipe is provided with a conical shell that expands outward to match the tower body. The conical shell is located above the secondary purification mechanism. Multiple branch pipes, each of which is connected to the upper side of the vertical air pipe and extends to the lower side of the purified liquid tank.
2. The staged purification flue gas treatment equipment for waste incineration power plants according to claim 1, characterized in that: The tower body is provided with a drainage outlet at the bottom, and multiple support legs are also fixed to the lower outer wall of the tower body.
3. The staged purification flue gas treatment equipment for waste incineration power plants according to claim 1, characterized in that: The purification liquid tank is equipped with a liquid filling port and a liquid draining port on the upper and lower sides, respectively.
4. The staged purification flue gas treatment equipment for waste incineration power plants according to claim 3, characterized in that: Both the liquid inlet and the liquid outlet are equipped with switch valves.
5. The staged purification flue gas treatment equipment for waste incineration power plants according to claim 1, characterized in that: The vertical air pipe is rotatably connected to the purified liquid tank by a bearing. A drive motor is also installed inside the tower body. Pulleys are installed at the output end of the drive motor and on the lower side of the vertical air pipe. The two pulleys are connected by belt drive.
6. The staged purification flue gas treatment equipment for waste incineration power plants according to claim 5, characterized in that: A rotating joint is installed at the bottom of the water collection cylinder, the water inlet pipe is connected to the rotating joint, and the conical shell is connected and fixed to the water collection cylinder by multiple connecting rods.