Flue gas moisture recovery device for thermal power plant
By using a combination of a flow hood, coils, and a water collection tank, the problem of water evaporation and waste in cooling towers is solved through the flue gas moisture recovery device in thermal power plants, thus achieving water resource recovery and fuel conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-10
AI Technical Summary
The large amount of water evaporated from the cooling towers of thermal power plants leads to water consumption and resource waste.
A flue gas moisture recovery device for thermal power plants was designed, including a flow collector, a coil, a water collection hood, and a water collection tank. The flow collector collects the flue gas, the coil cools the flue gas to form water droplets, and the water collection hood guides the water droplets into the water collection tank to achieve water recovery.
This reduces the water consumption of cooling towers, improves water resource utilization, and reduces fuel consumption.
Smart Images
Figure CN223985189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of thermal power generation equipment, specifically to a flue gas moisture recovery device for thermal power plants. Background Technology
[0002] A thermal power plant, also known as a coal-fired power plant, is a factory that uses combustible materials (such as coal, oil, and natural gas) as fuel to produce electricity. The basic production process of a thermal power plant involves burning combustible materials to heat water, which generates steam. This converts the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy. Cooling towers are unique equipment in thermal power plants. Their main function is to facilitate the heat exchange between the circulating water in the turbine and the air, thereby cooling and dissipating heat from the production equipment. During this process, heat is released with the steam at the cooling tower outlet and condenses into white water vapor in the air. The main component of the gas emitted from the cooling tower is water vapor.
[0003] Cooling towers cool equipment by evaporating heat, but a large amount of water evaporates into the air, causing water consumption inside the cooling tower and wasting water resources. Therefore, flue gas moisture recovery devices in thermal power plants are needed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a moisture recovery device for flue gas in thermal power plants, in order to solve the problem mentioned in the background art of large amounts of water evaporating into the air, causing water consumption inside the cooling tower and wasting water resources.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a flue gas moisture recovery device for thermal power plants, comprising a flow-concentrating hood, characterized in that: a base is connected to the bottom end of the flow-concentrating hood, a water-receiving hood is provided inside the flow-concentrating hood, a vent is provided on the inner side of the water-receiving hood, a water-receiving trough is provided inside the base and is located below the water-receiving hood, a coil is provided above the water-receiving hood, an exhaust pipe is connected to the top end of the flow-concentrating hood, a mounting bracket is connected to the inner wall of the exhaust pipe, and an exhaust fan is installed inside the mounting bracket.
[0006] The number of vents is multiple, and the multiple vents are arranged in a circular array.
[0007] The inner wall of the flow-collecting hood is connected to a plurality of first support feet, which are arranged in a circular array. One side of each of the first support feet is connected to the bottom of the water-collecting hood.
[0008] The inner wall of the base is connected to a plurality of second support feet, which are arranged in a circular array. The upper surface of the second support feet is connected to the lower surface of the water receiving tank.
[0009] The inner side of the water receiving tank is connected to a drain pipe, and the drain pipe is connected to the inside of the water receiving tank.
[0010] The inner wall of the flow hood is connected to a support frame, the lower surface of the support frame is connected to an ear seat, and the inner wall of the ear seat is connected to the outer surface of the coil.
[0011] The outer surface of the coil is connected to multiple fins, and the multiple fins are arranged in a circular array.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This utility model discloses a flue gas moisture recovery device for thermal power plants. Through the cooperation of a concentrator, coil, water collection hood, and water collection trough, the concentrator encloses the flue gas to prevent leakage to the outside. The coil cools the flue gas, causing it to form water droplets. The water collection hood guides these water droplets, while the hood allows flue gas to pass through through its vents. The water collection hood then guides the water droplets into the water collection trough, where they are collected and reused. This reduces the water consumption of the cooling tower, minimizes water waste, and improves the utilization rate of water resources.
[0014] The flue gas moisture recovery device of this utility model uses the cooperation between the coil and the fins. The coil and the fins absorb the heat inside the flue gas and heat the water inside the coil, thereby reducing the fuel consumption for heating the water and reducing fuel consumption. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the flow-concentrating hood of this utility model;
[0017] Figure 3 For the present utility model Figure 2 A magnified structural diagram of point A;
[0018] Figure 4 This is a schematic diagram of the coil structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the planar structure of the water-receiving cover of this utility model;
[0020] Figure 6 This is a schematic diagram of the water receiving trough structure of this utility model;
[0021] Figure 7 This is a cross-sectional schematic diagram of the internal structure of the exhaust pipe of this utility model.
[0022] In the diagram: 1. Concentrator; 2. Base; 3. Water collection cover; 4. Vent hole; 5. Water collection tank; 6. Coil; 7. Exhaust pipe; 8. Exhaust fan; 9. First support leg; 10. Second support leg; 11. Drain pipe; 12. Support frame; 13. Ear seat; 14. Fin; 15. Mounting bracket. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-7 The flue gas moisture recovery device for thermal power plants provided by this utility model includes a flow hood 1, and a base 2 is connected to the bottom end of the flow hood 1. The base 2 is used to install the device above the cooling tower, providing support for the overall device and maintaining its stability. The flow hood 1 collects the flue gas.
[0025] The inside of the concentrator hood 1 is equipped with a water collection hood 3, and the inner side of the water collection hood 3 is provided with a vent hole 4. The inside of the base 2 is equipped with a water collection tank 5, and the water collection tank 5 is located below the water collection hood 3. A coil 6 is provided above the water collection hood 3. The outer surface of the coil 6 is connected with multiple fins 14, and the multiple fins 14 are arranged in a circular array. The coil 6 increases the contact area with the flue gas through the fins 14, thereby improving the collection effect of the flue gas. The flue gas passes through the vent hole 4 inside the water collection hood 3 and comes into contact with the coil 6. The water collection hood 3 guides the water droplets into the water collection tank 5. The coil 6 is used to guide cold water, and the cold water flows inside the coil 6. At the same time, the cold water maintains the temperature of the coil 6, keeping the coil 6 at a low temperature.
[0026] The top of the flow hood 1 is connected to an exhaust pipe 7, and the inner wall of the exhaust pipe 7 is connected to a mounting bracket 15. An exhaust fan 8 is installed inside the mounting bracket 15. The exhaust pipe 7 is used to discharge the treated flue gas, the mounting bracket 15 provides support for the exhaust fan 8 to maintain the stability of the exhaust fan 8, and the exhaust fan 8 is used as a power source to provide power for the flow of flue gas inside the flow hood 1.
[0027] There are multiple vent holes 4, and the multiple vent holes 4 are arranged in a circular array. The water collection cover 3 has a conical shape that gradually decreases in size from bottom to top. The water collection cover 3 is an inclined disc with multiple layers stacked together. The air generated between the discs forms vent holes 4. The flue gas inside the cooling tower passes through the vent holes 4 and is cooled after contacting the coil 6. The cooled flue gas forms water droplets, which fall onto the surface of the water collection cover 3. The inclined angle of the water collection cover 3 facilitates the downward flow of water droplets into the water collection tank 5.
[0028] The inner wall of the flow-concentrating cover 1 is connected to multiple first support legs 9, and the multiple first support legs 9 are arranged in a circular array. One side of the multiple first support legs 9 is connected to the bottom end of the water-receiving cover 3. The first support legs 9 provide support for the flow-concentrating cover 1 and maintain the stability of the flow-concentrating cover 1.
[0029] The inner wall of the base 2 is connected to multiple second support legs 10, which are arranged in a circular array. The upper surface of the second support legs 10 is connected to the lower surface of the water receiving tank 5. The second support legs 10 provide support for the water receiving tank 5 and maintain its stability. The second support legs 10 distribute the support force around the water receiving tank 5, providing more stable support for the water receiving tank 5.
[0030] A drain pipe 11 is connected to the inside of the water receiving tank 5, and the drain pipe 11 is connected to the inside of the water receiving tank 5. The water collected inside the water receiving tank 5 is guided through the drain pipe 11 and discharged to the outside through the drain pipe 11. The water is then collected and reused.
[0031] The inner wall of the concentrator shroud 1 is connected to a support frame 12, and the lower surface of the support frame 12 is connected to an ear seat 13. The inner wall of the ear seat 13 is connected to the outer surface of the coil 6. The support frame 12 provides support to the ear seat 13 to maintain the stability of the ear seat 13. The support frame 12 supports the coil 6 through the ear seat 13 to maintain the stability of the coil 6.
[0032] Working principle: First, start the exhaust fan 8, then make the water inside the coil 6 flow. When the water flows, the coil 6 is in a low temperature state. After the exhaust fan 8 starts, it drives the flue gas to flow upward. Then the flowing flue gas enters the concentrator hood 1 through the vent 4. Then the flue gas comes into contact with the fins 14 and the coil 6. When the flue gas is in low temperature due to the coil 6 and the fins 14, it condenses into water droplets. Then the water droplets drip down to the surface of the water collection hood 3. After the water droplets drip down the surface of the water collection hood 3, they flow downward and enter the water collection tank 5. Then the water droplets are discharged through the drain pipe 11. The discharged water is collected and reused.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A device for recovering moisture from flue gases of a thermal power plant, comprising a flow concentrator (1), characterized in that: The bottom end of the poly-jet cover (1) is connected with a base (2), the inside of the poly-jet cover (1) is provided with a water receiving cover (3), the inside of the water receiving cover (3) is provided with air holes (4), the inside of the base (2) is provided with a water receiving groove (5), and the water receiving groove (5) is located below the water receiving cover (3), the upper side of the water receiving cover (3) is provided with a coil pipe (6), the top end of the poly-jet cover (1) is connected with an exhaust pipe (7), the inner wall of the exhaust pipe (7) is connected with a mounting frame (15), and the inside of the mounting frame (15) is mounted with an air extractor (8).
2. The flue gas moisture recovery device of a thermal power plant according to claim 1, characterized in that: The number of the air holes (4) is multiple, and the multiple air holes (4) are circularly arranged.
3. The flue gas moisture recovery device of a thermal power plant as claimed in claim 1 wherein: The inner wall of the poly-jet cover (1) is connected with multiple first supporting legs (9), and the multiple first supporting legs (9) are circularly arranged, and one side of the multiple first supporting legs (9) is connected with the bottom end of the water receiving cover (3).
4. The flue gas moisture recovery device of a thermal power plant as claimed in claim 1 wherein: The inner wall of the base (2) is connected with multiple second supporting legs (10), and the multiple second supporting legs (10) are circularly arranged, and the upper surface of the second supporting leg (10) is connected with the lower surface of the water receiving groove (5).
5. The flue gas moisture recovery device of a thermal power plant of claim 1, wherein: The inside of the water receiving groove (5) is connected with a drain pipe (11), and the drain pipe (11) is communicated with the inside of the water receiving groove (5).
6. The flue gas moisture recovery device of a thermal power plant of claim 1, wherein: The inner wall of the poly-jet cover (1) is connected with a supporting frame (12), the lower surface of the supporting frame (12) is connected with an ear seat (13), and the inner wall of the ear seat (13) is connected with the outer surface of the coil pipe (6).
7. The flue gas moisture recovery device of a thermal power plant of claim 1, wherein: The outer surface of the coil pipe (6) is connected with multiple fins (14), and the multiple fins (14) are circularly arranged.