A kind of purification device for circulating cooling water of waste incineration power plant

Abstract

The utility model relates to purification device technical field especially relates to a kind of purification device of waste incineration power plant circulating cooling water, including purification pond, ultrasonic vibration mechanism, water inlet mechanism, backwater mechanism and filter screen;The front end of purification pond is equipped with water inlet mechanism, the inside of purification pond is equipped with purification cavity, the bottom of purification cavity is equipped with ultrasonic vibration mechanism, the front end of purification cavity is equipped with separation cavity, and the rear end of purification cavity is equipped with backwater cavity;The utility model realizes the three-stage filtration structure of separation cavity, purification cavity and backwater cavity, can more effectively remove the impurity in cooling water, not only intercept larger solid impurities, but also can handle tiny impurities, significantly improve purification effect.

Description

Technical Field

[0001] This utility model relates to the field of purification device technology, and in particular to a purification device for circulating cooling water in a waste incineration power plant. Background Technology

[0002] In waste-to-energy power plants, the circulating cooling water system plays a crucial role in cooling key equipment such as generator sets and steam turbines. It is one of the key links in ensuring the safe and stable operation of the power plant. Since a large number of pollutants are generated during waste incineration, these pollutants enter the circulating cooling water system through various pathways. Therefore, it is necessary to use appropriate purification devices to purify the cooling water.

[0003] Traditional purification devices typically use single-stage filtration, such as sand filtration or bag filtration, to intercept impurities in the water. However, even after single-stage filtration, tiny impurities still exist in the cooling water. When mixed with chemicals, these impurities can produce flocculent material, which can easily clog the return water structure of the purification device.

[0004] Therefore, in response to the problem that even after using single-stage filtration in traditional purification devices, tiny impurities still exist in the cooling water, forming flocculent matter that easily clogs the return water structure of the purification device, a purification device for circulating cooling water in waste incineration power plants can be designed. By integrating a three-stage filtration structure within the purification tank, the above problems can be easily solved. Utility Model Content

[0005] In order to overcome the shortcomings of traditional purification devices that still have tiny impurities in the cooling water after single-stage filtration, which can easily clog the return water structure of the purification device, this utility model provides a purification device for circulating cooling water in waste incineration power plants.

[0006] The technical solution is as follows: A purification device for circulating cooling water in a waste incineration power plant includes a purification tank, an ultrasonic vibration mechanism, a water inlet mechanism, a water return mechanism, and a filter screen; the front end of the purification tank is provided with a water inlet mechanism for discharging cooling water into the purification tank; the interior of the purification tank is provided with a purification chamber for purifying the cooling water; the bottom of the purification chamber is provided with an ultrasonic vibration mechanism for promoting the mixing of reagents and cooling water; the front end of the purification chamber is provided with a separation chamber for separating solid impurities in the cooling water; the rear end of the purification chamber is provided with a water return chamber for further filtering the cooling water; the interior of the water return chamber is provided with a water return mechanism for returning the cooling water; two sets of filter screens are provided between the separation chamber, the purification chamber, and the water return chamber, and the separation chamber, the purification chamber, and the water return chamber are separated by the two sets of filter screens.

[0007] Furthermore, multiple sets of ultrasonic vibrating rods are linearly arranged at the bottom of the purification chamber, and a battery pack corresponding to the multiple sets of ultrasonic vibrating rods is provided on one side of the purification pool. One end of the multiple sets of ultrasonic vibrating rods passes through the purification pool and is connected to the battery pack, and a control console is provided above the battery pack.

[0008] Furthermore, a water guide slope is provided at the front end of the separation chamber, and two sets of sliding grooves are symmetrically provided on both sides of the water guide slope. The two sets of sliding grooves are horizontally arranged with the water guide slope, and multiple sets of water inlet holes are evenly provided at the top of the water guide slope.

[0009] Furthermore, one set of filter screens is equipped with a filter frame, and two sets of corresponding sliders are symmetrically arranged on both sides of the filter frame. The filter frame is set at a right angle to the water guide slope, and the bottom of the filter frame is in contact with the water guide slope. The filter frame has a fixing slot corresponding to one set of filter screens inside.

[0010] Furthermore, two sets of fixing brackets corresponding to the other set of filter screens are symmetrically arranged between the purification chamber and the return water chamber. Fixing slots are opened on the opposite sides of the two sets of fixing brackets, and the two sides of the filter screen are fixed by the fixing slots.

[0011] Furthermore, the water inlet mechanism includes a water inlet connector, a main water inlet pipe at the rear end of the water inlet connector, and multiple sets of branch pipes corresponding to water inlets evenly arranged at the outer end of the main water inlet pipe away from the water inlet connector. One end of the multiple branch pipes is connected to the main water inlet pipe, and the other end of the multiple branch pipes extends through the water inlet holes to the top of the water guide slope.

[0012] Furthermore, the water return mechanism includes a water return pipe, and a water return hole corresponding to the water return pipe is opened at the bottom of the rear end of the water return chamber. One end of the water return pipe extends through the water return hole to the outer end of the purification tank, and the other end of the water return pipe extends into the interior of the water return chamber. A water return pump is provided at the other end of the water return pipe.

[0013] Furthermore, the surface of the purification tank is provided with a cover plate groove, and the inside of the cover plate groove is provided with a sealing cover plate for sealing the purification tank. Support legs are provided at the lower corners of the purification tank.

[0014] The beneficial effect is that, compared with the shortcomings of traditional purification devices that use single-stage filtration, this application, through a three-stage filtration structure between the separation chamber, purification chamber, and return water chamber, can more effectively remove impurities from the cooling water. It not only intercepts larger solid impurities but also handles tiny impurities, significantly improving the purification effect. The filter frame, together with the filter screen, lies between the separation chamber and the purification chamber to initially separate fixed impurities in the cooling water. The ultrasonic vibration mechanism generates high-frequency vibration through an ultrasonic vibrator, accelerating the mixing of the reagent and the cooling water. This causes the fine impurities to mix with the reagent to produce flocculent matter, which floats on the upper layer of the cooling water due to buoyancy, further improving the purification efficiency. The floating flocculent matter is intercepted by the filter screen between the purification chamber and the return water chamber, preventing blockage of the return water mechanism. The return water mechanism draws cleaner water from the bottom of the rear end of the return water chamber, ensuring the stability of the cooling water quality returned to the power plant's circulating system. This guarantees the cooling effect of key equipment in the power plant and is conducive to the safe and stable operation of the power plant. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the purification device of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the combination of the purification tank and the ultrasonic vibration mechanism of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the filter frame of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the purification tank and supporting legs of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the water inlet mechanism of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Purification tank; 2. Separation chamber; 3. Purification chamber; 4. Return water chamber; 5. Sealing cover; 6. Ultrasonic vibration mechanism; 601. Ultrasonic vibrator; 602. Battery pack; 603. Control console; 7. Filter screen; 8. Water inlet mechanism; 9. Return water mechanism; 10. Water guide ramp; 11. Slide chute; 12. Filter frame; 13. Return water hole; 14. Return water pump; 15. Return water pipe; 16. Fixing slot; 17. Slider; 18. Water inlet hole; 19. Fixing frame; 20. Fixing slot; 21. Support leg; 22. Water inlet connector; 23. Main water inlet pipe; 24. Diversion pipe. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] The circulating cooling water system plays a crucial role in cooling key equipment such as generator sets and steam turbines. During operation, generator sets generate a large amount of heat due to various energy conversions and mechanical friction. If this heat cannot be dissipated in time, it will cause the equipment temperature to rise sharply, which will not only seriously affect the operating efficiency of the equipment, but may also lead to equipment failure or even safety accidents. As an important device for converting thermal energy into mechanical energy, the steam turbine also has strict temperature requirements for its normal operation. The circulating cooling water system is like a "thermostat" for the power plant equipment. Through the continuous circulation of cooling water, it removes the heat generated by the equipment, keeping the equipment within a reasonable operating temperature range and ensuring the continuity and stability of power plant production.

[0023] However, waste incineration is a major source of pollutants. Waste is complex and diverse, containing plastics, rubber, paper, kitchen waste, and various chemicals. During high-temperature incineration, these substances undergo a series of complex chemical reactions, producing large amounts of pollutants such as sulfur dioxide, nitrogen oxides, hydrogen chloride, dioxins, and heavy metals. These pollutants enter the circulating cooling water system through various pathways. On the one hand, pollutants carried in the flue gas produced by incineration enter the cooling water as water vapor condenses during heat exchange between the cooling tower and the air. On the other hand, harmful substances contained in the ash residue after waste incineration may seep into the ground through rainwater runoff during treatment and storage, thus polluting nearby water sources. If these polluted water sources are used as makeup water for the circulating cooling water system, they will introduce pollutants into the system.

[0024] To ensure that the circulating cooling water quality meets the equipment's cooling requirements and to prevent damage such as corrosion and scaling caused by water quality issues, appropriate purification devices are needed to purify the cooling water. Traditional purification devices are widely used in waste incineration power plants. During operation, single-stage filtration methods such as sand filtration and bag filtration are typically used to intercept impurities in the water. Sand filtration utilizes the porous structure of filter media such as quartz sand to remove larger suspended solids and some colloidal substances from the water through physical interception and adsorption. Bag filtration involves installing filter bags inside the filter; when water flows through the filter bags, impurities are intercepted inside the bags, thereby achieving the purpose of purifying the water quality.

[0025] Although sand filtration and bag filtration can remove some impurities from cooling water to a certain extent and improve water quality initially, this single-stage filtration method has obvious limitations. Due to its limited filtration precision, a large number of tiny impurities still exist in the cooling water after single-stage filtration. The particle size of these tiny impurities is often at the micrometer or even nanometer level, which is difficult to completely remove by traditional single-stage filtration devices.

[0026] Example

[0027] like Figures 1-5As shown, a purification device for circulating cooling water in a waste incineration power plant includes a purification tank 1, an ultrasonic vibration mechanism 6, a water inlet mechanism 8, a water return mechanism 9, and a filter screen 7. The water inlet mechanism 8 is located above the front end of the purification tank 1 for discharging cooling water into the purification tank 1. A purification chamber 3 for purifying the cooling water is located inside the purification tank 1. An ultrasonic vibration mechanism 6 for promoting the mixing of reagents and cooling water is located at the bottom of the purification chamber 3. A separation chamber 2 for separating solid impurities in the cooling water is located at the front end of the purification chamber 3. A water return chamber 4 for further filtering the cooling water is located at the rear end of the purification chamber 3. A water return mechanism 9 for returning the cooling water is located inside the water return chamber 4. Two sets of filter screens 7 are respectively provided between the separation chamber 2, the purification chamber 3, and the water return chamber 4, and the separation chamber 2, the purification chamber 3, and the water return chamber 4 are separated by the two sets of filter screens 7.

[0028] Multiple sets of ultrasonic vibrating rods 601 are linearly arranged at the bottom of the purification chamber 3. A battery pack 602 corresponding to the multiple sets of ultrasonic vibrating rods 601 is provided on one side of the purification tank 1. One end of the multiple sets of ultrasonic vibrating rods 601 passes through the purification tank 1 and is connected to the battery pack 602. A control console 603 is provided above the battery pack 602. High-frequency vibration is generated by the ultrasonic vibrating rods 601, which can accelerate the mixing efficiency of the agent and the cooling water, make the agent more evenly dispersed in the water, and improve the flocculation effect for secondary filtration.

[0029] The front end of the separation chamber 2 is provided with a water guide slope 10. Two sets of sliding grooves 11 are symmetrically provided on both sides of the water guide slope 10. The two sets of sliding grooves 11 are horizontally arranged with the water guide slope 10. Multiple sets of water inlet holes 18 are evenly provided on the top of the water guide slope 10. The inclined structure of the water guide slope 10 can guide the cooling water to flow slowly along the slope, prolonging the residence time of the water in the separation chamber 2, and facilitating the settling of solid impurities by gravity. The water inlet holes 18 are evenly distributed on the top of the water guide slope 10, which can make the cooling water flow evenly into the separation chamber 2 and avoid water flow impact causing impurities to be suspended.

[0030] One set of filter screens 7 is matched with a filter frame 12. Two sets of sliders 17 corresponding to the sliding grooves 11 are symmetrically arranged on both sides of the filter frame 12. The filter frame 12 is set at a right angle to the water guiding slope 10. The bottom of the filter frame 12 is in contact with the water guiding slope 10. The filter frame 12 has a fixing slot 16 corresponding to one set of filter screens 7 inside. By the sliders 17 cooperating with the sliding grooves 11, the filter frame 12 can slide upward along the water guiding slope 10, which facilitates the cleaning of the screened solid impurities.

[0031] Two sets of fixing brackets 19 are symmetrically arranged between the purification chamber 3 and the return water chamber 4, corresponding to the other set of filter screens 7. The opposite sides of the two sets of fixing brackets 19 are provided with fixing slots 20. The two sides of the filter screen 7 are fixed by the fixing slots 20. The filter screen 7 is fixed between the purification chamber 3 and the return water chamber 4 by the fixing slots 20 of the fixing brackets 19, forming a stable three-stage filtration structure.

[0032] The water inlet mechanism 8 includes a water inlet connector 22. A main water inlet pipe 23 is provided at the rear end of the water inlet connector 22. Multiple sets of diversion pipes 24 corresponding to the water inlet holes 18 are evenly provided at the outer end of the main water inlet pipe 23 away from the water inlet connector 22. One end of the multiple sets of diversion pipes 24 is connected to the main water inlet pipe 23, and the other end of the multiple sets of diversion pipes 24 extends through the water inlet holes 18 to the top of the water guide slope 10. The combination of the water inlet connector 22 and the main water inlet pipe 23 can be connected to the power plant's circulating cooling water pipeline to achieve centralized input of cooling water. The diversion pipes 24 are evenly distributed and correspond to the water inlet holes 18, which can evenly divert the cooling water in the main water inlet pipe 23 to the top of the water guide slope 10 to avoid excessive local water flow and insufficient sedimentation of impurities.

[0033] The water return mechanism 9 includes a water return pipe 15. A water return hole 13 corresponding to the water return pipe 15 is opened at the bottom of the rear end of the water return chamber 4. One end of the water return pipe 15 extends through the water return hole 13 to the outer end of the purification tank 1, and the other end of the water return pipe 15 extends into the interior of the water return chamber 4. A water return pump 14 is provided at the other end of the water return pipe 15. The cooling water after three-stage filtration can be stably returned to the power plant circulation system through the water return pipe 15. The water return hole 13 is opened at the bottom of the rear end of the water return chamber 4, which can preferentially extract the cleaner water at the bottom and prevent the tiny impurities that may remain in the upper layer from entering the water return pipe 15.

[0034] The surface of the purification tank 1 is provided with a cover plate groove, and the inside of the cover plate groove is provided with a sealing cover plate 5 for sealing the purification tank 1. Support legs 21 are provided at the lower corners of the purification tank 1. The sealing cover plate 5 can seal the purification tank 1 to prevent debris from falling into the purification chamber 3 and affecting the filtration effect, while reducing water evaporation and chemical volatilization.

[0035] When working, first, connect the water inlet connector 22 to the power plant's circulating cooling water pipeline to ensure a tight and leak-free connection. Then, through the main water inlet pipe 23 and the multi-component flow pipe 24, the cooling water is evenly transported to the top of the water guide slope 10 of the separation chamber 2, so that the cooling water flows evenly into the separation chamber 2 through the water inlet hole 18.

[0036] Then turn on the battery pack 602 and the control panel 603, start the ultrasonic vibrator 601, adjust the parameters of the control panel 603 to make the ultrasonic vibrator 601 generate high-frequency vibration at a suitable frequency, then add an appropriate amount of purification agent into the purification chamber 3, then close the sealing cover 5 to seal the purification pool 1, then start the return water pump 14 to make the purified cooling water return to the circulation system through the return water pipe 15. When it is necessary to clean the solid impurities in the separation chamber 2, open the sealing cover 5, slide the filter frame 12 upward along the slide groove 11 of the water guide slope 10 to make the filter frame 12 rise from the cooling water for cleaning, and after cleaning, slide the filter frame 12 back to its original position.

[0037] Its working principle is that cooling water enters the separation chamber 2 through the water inlet mechanism 8. The inclined structure of the water guide ramp 10 guides the cooling water to flow slowly along the ramp, so that solid impurities are intercepted in the separation chamber 2 by the filter screen 7 between the separation chamber 2 and the purification chamber 3.

[0038] The cooling water, after initial filtration, enters the purification chamber 3 through the filter screen 7. The high-frequency vibration generated by the ultrasonic vibrator 601 accelerates the mixing efficiency of the agent and cooling water, making the agent more evenly dispersed in the water, promoting the flocculation of small impurities into larger particles, and achieving secondary filtration. The flocculated impurities are intercepted by the filter screen 7 between the purification chamber 3 and the return water chamber 4 for tertiary filtration.

[0039] After passing through three stages of filtration, the cooling water is drawn from the return water hole 13 at the bottom of the rear end of the return water chamber 4 through the return water pipe 15 under the action of the return water pump 14. The cleaner water at the bottom is drawn first and returned to the power plant circulation system to complete the entire purification and circulation process.

[0040] Its beneficial effects are significant. Through the three-stage filtration structure between the separation chamber 2, purification chamber 3, and return water chamber 4, it can more effectively remove impurities from the cooling water compared to traditional single-stage filtration. It not only intercepts larger solid impurities but also handles tiny impurities, significantly improving the purification effect. The filter frame 12, together with the filter screen 7, lies between the separation chamber 2 and the purification chamber 3 to initially separate fixed impurities in the cooling water. The ultrasonic vibration mechanism 6 generates high-frequency vibration through the ultrasonic vibrator 601, which accelerates the mixing of the reagent and the cooling water, causing the fine impurities to mix with the reagent to produce flocculent matter. The flocculent matter floats on the upper layer of the cooling water due to buoyancy, further improving the purification efficiency. The floating flocculent matter is intercepted by the filter screen 7 between the purification chamber 3 and the return water chamber 4, preventing blockage of the return water mechanism 9. The return water mechanism 9 draws cleaner water from the bottom of the rear end of the return water chamber 4, ensuring the stability of the cooling water quality returned to the power plant's circulating system, guaranteeing the cooling effect of key equipment in the power plant, and contributing to the safe and stable operation of the power plant.

Claims

1. A purification device for circulating cooling water in a waste incineration power plant, comprising a purification tank (1); characterized in that, It also includes an ultrasonic vibration mechanism (6), a water inlet mechanism (8), a water return mechanism (9), and a filter screen (7); the front end of the purification tank (1) is provided with a water inlet mechanism (8) for discharging cooling water into the purification tank (1), the purification tank (1) is provided with a purification chamber (3) for purifying cooling water, the bottom of the purification chamber (3) is provided with an ultrasonic vibration mechanism (6) for promoting the mixing of the agent and the cooling water, the front end of the purification chamber (3) is provided with a separation chamber (2) for separating solid impurities in the cooling water, the rear end of the purification chamber (3) is provided with a water return chamber (4) for filtering the cooling water again, the inside of the water return chamber (4) is provided with a water return mechanism (9) for returning the cooling water, and two sets of filter screens (7) are provided between the separation chamber (2), the purification chamber (3), and the water return chamber (4), and the separation chamber (2), the purification chamber (3), and the water return chamber (4) are separated by two sets of filter screens (7).

2. The purification device for circulating cooling water in a waste incineration power plant according to claim 1, characterized in that, Multiple ultrasonic vibrating rods (601) are linearly arranged at the bottom of the purification chamber (3). A battery pack (602) corresponding to the multiple ultrasonic vibrating rods (601) is provided on one side of the purification pool (1). One end of the multiple ultrasonic vibrating rods (601) passes through the purification pool (1) and is connected to the battery pack (602). A control console (603) is provided above the battery pack (602).

3. The purification device for circulating cooling water in a waste incineration power plant according to claim 1, characterized in that, The front end of the separation chamber (2) is provided with a water guide slope (10). Two sets of sliding grooves (11) are symmetrically provided on both sides of the water guide slope (10). The two sets of sliding grooves (11) are horizontally arranged with the water guide slope (10). Multiple sets of water inlet holes (18) are evenly provided on the top of the water guide slope (10).

4. The purification device for circulating cooling water in a waste incineration power plant according to claim 3, characterized in that, One set of filter screens (7) is matched with a filter frame (12). Two sets of sliders (17) corresponding to the sliding grooves (11) are symmetrically provided on both sides of the filter frame (12). The filter frame (12) is set at a right angle to the water guide slope (10). The bottom of the filter frame (12) is in contact with the water guide slope (10). The filter frame (12) has a fixing slot (16) corresponding to one set of filter screens (7) inside.

5. A purification device for circulating cooling water in a waste incineration power plant according to claim 4, characterized in that, Two sets of fixing brackets (19) corresponding to the other set of filter screens (7) are symmetrically arranged between the purification chamber (3) and the return water chamber (4). Fixing slots (20) are opened on the opposite sides of the two sets of fixing brackets (19). The two sides of the filter screen (7) are fixed by the fixing slots (20).

6. The purification device for circulating cooling water in a waste incineration power plant according to claim 1, characterized in that, The water inlet mechanism (8) includes a water inlet connector (22), and a main water inlet pipe (23) is provided at the rear end of the water inlet connector (22). Multiple sets of branch pipes (24) corresponding to water inlet holes (18) are evenly provided at the outer end of the main water inlet pipe (23) away from the water inlet connector (22). One end of the multiple branch pipes (24) is connected to the main water inlet pipe (23), and the other end of the multiple branch pipes (24) extends through the water inlet hole (18) to the top of the water guide slope (10).

7. A purification device for circulating cooling water in a waste incineration power plant according to claim 1, characterized in that, The water return mechanism (9) includes a water return pipe (15). A water return hole (13) corresponding to the water return pipe (15) is opened at the bottom of the rear end of the water return chamber (4). One end of the water return pipe (15) passes through the water return hole (13) and extends to the outer end of the purification tank (1). The other end of the water return pipe (15) extends into the interior of the water return chamber (4). A water return pump (14) is provided at the other end of the water return pipe (15).

8. A purification device for circulating cooling water in a waste incineration power plant according to claim 1, characterized in that, The surface of the purification tank (1) is provided with a cover plate groove, and the inside of the cover plate groove is provided with a sealing cover plate (5) for sealing the purification tank (1). Support legs (21) are provided at the lower corners of the purification tank (1).

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