Flue gas waste heat utilization system for medium-low temperature section of sintering circular cooler

Abstract

The utility model provides a sintering circular cooler medium-low temperature section flue gas waste heat utilization system which comprises a box body, a heat exchange cavity and a containing cavity are formed in the box body, and the containing cavity is located on the upper portion of the heat exchange cavity. A heat exchange tube, a filter screen, a plurality of elastic components and a magnet are arranged in the heat exchange cavity, and the heat exchange tube is connected with the box body; and a plurality of elastic components are arranged on the outer edge of the filter screen. According to the utility model, the filter screen and the magnet are arranged in the heat exchange cavity and are matched with the electromagnet and the telescopic device, so that solid impurities on the surface of the filter screen can be shaken off, the blockage of the filter screen caused by long-term accumulation of the solid impurities is avoided, and the smooth passing of flue gas is ensured; and meanwhile, a water spraying device is arranged, and a slope and a drainage pipe at the bottom of the box body are combined, so that the interior of the heat exchange cavity can be effectively flushed, accumulated dust can be timely cleaned, and the stability and cleaning convenience of the system are improved.

Description

Technical Field

[0001] This utility model relates to a flue gas waste heat utilization system, specifically a flue gas waste heat utilization system in the low-temperature section of a sintering ring cooler, belonging to the field of flue gas waste heat utilization technology. Background Technology

[0002] Sintering ring coolers generate a large amount of flue gas with medium- and low-temperature heat energy during operation, which would be a waste of energy if not utilized. In existing technologies, some devices have recovered heat from the flue gas through heat exchange pipes to heat other media, thus realizing waste heat utilization. However, because the flue gas often contains a lot of dust and impurities, these particles easily deposit on the surface of the heat exchange device after entering it, leading to reduced heat exchange efficiency and, in severe cases, even blockage of the pipes, affecting the stable operation of the device.

[0003] Currently, most equipment relies on manual cleaning of the filter structure periodically, which is not only labor-intensive but also makes it difficult to achieve continuous and stable cleaning. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a waste heat utilization system for flue gas in the low-temperature section of a sintering ring cooler that is easy to clean and operate, thus solving the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] A waste heat utilization system for flue gas in the low-temperature section of a sintering ring cooler includes a housing, wherein a heat exchange chamber and a placement chamber are provided inside the housing, and the placement chamber is located above the heat exchange chamber.

[0007] The heat exchange chamber is equipped with heat exchange tubes, a filter screen, several elastic components, and a magnet. The heat exchange tubes are connected to the housing. The filter screen is located on the upper part of the heat exchange tubes. Several elastic components are arranged on the outer edge of the filter screen. The filter screen is connected to the housing through the elastic components. A magnet is arranged on the upper side of the filter screen and is connected to the filter screen.

[0008] The placement cavity is equipped with a telescopic device, which is connected to the box body;

[0009] The housing has an opening between the heat exchange chamber and the placement chamber, and the heat exchange chamber and the placement chamber are connected through the opening; the telescopic end of the telescopic device is located inside the heat exchange chamber through the opening, and the telescopic end of the telescopic device is above the filter screen; an electromagnet is provided at the telescopic end of the telescopic device, and the electromagnet is connected to the telescopic end of the telescopic device, and the electromagnet corresponds to a magnet.

[0010] Preferably, the housing is provided with a smoke inlet and a smoke outlet, the smoke inlet being located at the lower part of the filter screen and the smoke outlet being located at the upper part of the filter screen, and both the smoke inlet and the smoke outlet are connected to the housing.

[0011] Preferably, a water spraying device is provided on the upper part of the filter screen, and the water spraying device is connected to the housing.

[0012] Preferably, a shock-absorbing component is provided between the elastic component and the housing, and the shock-absorbing component is connected to both the elastic component and the housing.

[0013] Preferably, the bottom of the heat exchange chamber is provided with a ramp, and the ramp and the housing are an integral structure.

[0014] Preferably, a sealing ring is provided at the opening position, and the sealing ring is located on one side of the placement cavity. The sealing ring is connected to the box body and the telescopic device.

[0015] Preferably, the waste heat utilization system for flue gas in the low-temperature section of the sintering ring cooler also includes a control panel, which is connected to the housing and electrically connected to the telescopic device, electromagnet, and water spraying device.

[0016] Preferably, a drain pipe is provided at the bottom of the box, and the drain pipe is located on the side of the lowest end of the slope, and the drain pipe is connected to the box.

[0017] Preferably, the enclosure is provided with an insulation layer, which is connected to the enclosure.

[0018] Preferably, the drain pipe is equipped with a valve body.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This invention relates to a waste heat recovery system for flue gas in the low-temperature section of a sintering ring cooler. By installing a filter screen and magnet inside the heat exchange chamber, along with an electromagnet and telescopic device, solid impurities on the filter screen surface can be shaken off, preventing long-term accumulation and clogging, thus ensuring smooth flue gas flow. Simultaneously, a water spraying device, combined with the slope at the bottom of the chamber and a drain pipe, effectively flushes the inside of the heat exchange chamber, facilitating timely cleaning of accumulated ash and improving system stability and ease of cleaning. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the internal structure of the box of this utility model;

[0023] Figure 2 This is a schematic diagram of the filter structure of this utility model.

[0024] In the diagram: 1. Housing; 2. Heat exchange chamber; 3. Placement chamber; 4. Heat exchange tube; 5. Filter screen; 6. Elastic component; 7. Magnet; 8. Telescopic device; 9. Port; 10. Electromagnet; 11. Smoke inlet; 12. Smoke outlet; 13. Sprinkler device; 14. Shock absorption component; 15. Ramp; 16. Sealing ring; 17. Control panel; 18. Drain pipe; 19. Insulation layer; 20. Valve body. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0026] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0028] like Figure 1 and Figure 2 As shown, a waste heat utilization system for flue gas in the low-temperature section of a sintering ring cooler includes a housing 1. The housing 1 has a heat exchange chamber 2, a placement chamber 3, and a passage 9. The placement chamber 3 is located above the heat exchange chamber 2, and the placement chamber 3 and the heat exchange chamber 2 are connected through the passage 9.

[0029] Inside the heat exchange chamber 2, there are heat exchange tubes 4, filter screens 5, elastic components 6 and magnets 7. The heat exchange tubes 4 are used to transfer the heat in the flue gas to the gas or liquid flowing through them, achieving waste heat recovery. The filter screen 5 is located above the heat exchange tubes 4 and is used to filter solid particles in the flue gas. The edge of the filter screen 5 is connected to the box body 1 through several elastic components 6, enabling the filter screen 5 to have a certain elastic displacement ability. A magnet 7 is fixed on the upper part of the filter screen 5.

[0030] A telescopic device 8 is arranged in the placement chamber 3. Its telescopic end passes through the through hole 9 opened on the box body 1 and extends into the heat exchange chamber 2, located above the filter screen 5. The telescopic end is connected with an electromagnet 10, and the position of the electromagnet 10 corresponds to the magnet 7 on the filter screen 5. When it is necessary to clean the filter screen 5, the telescopic device 8 is started, driving the electromagnet 10 to move downward to attract the magnet 7, thereby driving the entire filter screen 5 to rise. After rising to the preset position, the electromagnet 10 is powered off, the magnetic attraction disappears, and the filter screen 5 quickly falls back under the action of the elastic components 6 and generates vibrations. The solid impurities attached to it fall off and land at the bottom of the heat exchange chamber 2, realizing the function of shaking off dust.

[0031] Among them, a sealing ring 16 is arranged at the through hole 9. The sealing ring 16 is located on one side of the placement chamber 3 and is respectively connected to the box body 1 and the telescopic device 8, thus ensuring good sealing of the through hole 9 during the telescopic movement of the telescopic device 8 and preventing flue gas leakage.

[0032] Above the filter screen 5, there is a sprinkler device 13, which can wash the filter screen 5 and its surrounding areas during the cleaning process. A slope 15 is arranged at the bottom of the heat exchange chamber 2, which is used to guide the flow of the cleaning liquid and impurity mixture, and is discharged outside the box body 1 through a drain pipe 18 arranged at the lowest point of the slope 15. A valve body 20 is installed on the drain pipe 18, which can control the discharge according to needs, facilitating centralized cleaning and improving the operation cleanliness.

[0033] The control panel 17 arranged on one side of the box body 1 is electrically connected to the telescopic device 8, the electromagnet 10 and the sprinkler device 13, and can realize the linkage and automatic control of these functions. There is also a heat insulation layer 19 outside the box body 1, which helps to reduce heat loss and improve the heat exchange efficiency.

[0034] The implementation principle of a waste heat utilization system for the medium and low temperature section flue gas of a sintering ring cooler in the utility model is as follows:

[0035] The medium-low temperature flue gas from the sintering ring cooler is introduced into the heat exchange chamber 2 inside the housing 1 through the flue gas inlet 11. The flue gas flows from bottom to top through the heat exchange tubes 4 and the filter screen 5 arranged in the heat exchange chamber 2. The flue gas exchanges heat with the heat exchange medium flowing in the heat exchange tubes 4 to achieve waste heat recovery. After heat exchange, the flue gas continues to rise and passes through the filter screen 5. The filter screen 5 filters the solid particles in the flue gas and intercepts the dust on its surface area. The filtered flue gas is finally discharged from the flue gas outlet 12.

[0036] During the filtration process, dust and impurities gradually accumulate on the filter screen 5. When the set running time reaches the cleaning cycle, the telescopic device 8 in the placement chamber 3 is activated, connecting the power supply to the electromagnet 10. The telescopic end of the telescopic device 8 moves downward, causing the electromagnet 10 at its end to attract the magnet 7 on the upper part of the filter screen 5, thus driving the filter screen 5 to rise as a whole. When it rises to the set position, the power supply to the electromagnet 10 is disconnected, the magnetic attraction is released, and the filter screen 5 falls rapidly under the pulling force of the elastic component 6, generating vibration, thereby effectively shaking off the dust particles attached to the surface to the bottom of the heat exchange chamber 2, completing one cleaning process.

[0037] When there is a large amount of ash accumulated inside the heat exchange chamber 2, the water spray device 13 installed above the filter screen 5 can be activated to further clean the filter screen 5 and the residual impurities on the inner wall of the heat exchange chamber 2 by flushing with water. The flushing liquid carries the impurities along the slope 15 at the bottom of the heat exchange chamber 2 to a lower position and is discharged through the drain pipe 18.

[0038] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A waste heat recovery system for flue gas in the low-temperature section of a sintering ring cooler, characterized in that: The waste heat utilization system of flue gas in the low temperature section of the sintering ring cooler includes a box (1), and a heat exchange chamber (2) and a placement chamber (3) are opened inside the box (1), and the placement chamber (3) is located above the heat exchange chamber (2); The heat exchange chamber (2) is equipped with a heat exchange tube (4), a filter screen (5), several elastic components (6) and a magnet (7). The heat exchange tube (4) is connected to the housing (1). The filter screen (5) is located on the upper part of the heat exchange tube (4). Several elastic components (6) are arranged on the outer edge of the filter screen (5). The filter screen (5) is connected to the housing (1) through the elastic components (6). A magnet (7) is arranged on the upper side of the filter screen (5). The magnet (7) is connected to the filter screen (5). The placement cavity (3) is provided with a telescopic device (8), which is connected to the box body (1); The housing (1) has an opening (9) between the heat exchange chamber (2) and the placement chamber (3), and the heat exchange chamber (2) and the placement chamber (3) are connected through the opening (9); the telescopic end of the telescopic device (8) is located in the heat exchange chamber (2) through the opening (9), and the telescopic end of the telescopic device (8) is above the filter screen (5); an electromagnet (10) is provided at the telescopic end of the telescopic device (8), and the electromagnet (10) is connected to the telescopic end of the telescopic device (8), and the electromagnet (10) corresponds to the magnet (7).

2. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 1, characterized in that: The housing (1) is provided with a smoke inlet (11) and a smoke outlet (12). The smoke inlet (11) is located at the lower part of the filter screen (5), and the smoke outlet (12) is located at the upper part of the filter screen (5). Both the smoke inlet (11) and the smoke outlet (12) are connected to the housing (1).

3. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 1, characterized in that: A water spraying device (13) is provided on the upper part of the filter screen (5), and the water spraying device (13) is connected to the box body (1).

4. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 1, characterized in that: A shock-absorbing component (14) is provided between the elastic component (6) and the housing (1), and the shock-absorbing component (14) is connected to both the elastic component (6) and the housing (1).

5. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 1, characterized in that: The bottom of the heat exchange chamber (2) is provided with a ramp (15), and the ramp (15) and the box body (1) are an integral structure.

6. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 1, characterized in that: A sealing ring (16) is provided at the opening (9), and the sealing ring (16) is located on one side of the placement cavity (3). The sealing ring (16) is connected to the box body (1) and the telescopic device (8).

7. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 3, characterized in that: The waste heat utilization system for flue gas in the low-temperature section of the sintering ring cooler also includes a control panel (17), which is connected to the housing (1). The control panel (17) is electrically connected to the telescopic device (8), the electromagnet (10), and the water spraying device (13).

8. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 5, characterized in that: A drain pipe (18) is provided at the lower part of the box (1), and the drain pipe (18) is located on one side of the lowest end of the slope (15), and the drain pipe (18) is connected to the box (1).

9. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 8, characterized in that: The enclosure (1) is provided with an insulation layer (19), which is connected to the enclosure (1).

10. The waste heat recovery system for the low-temperature section of the sintering ring cooler according to claim 8, characterized in that: The drain pipe (18) is equipped with a valve body (20).

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