A flue gas circulation energy-saving device based on waste heat recovery for a double-chamber lime kiln

Abstract

This utility model provides an energy-saving device for flue gas circulation in a double-chamber lime kiln based on waste heat recovery, comprising a frame, a workbench, a main frame, an electrostatic precipitator, a heat exchanger, and a spray box. The workbench is mounted on the upper surface of the frame. The main frame is installed on top of the workbench and has an open structure. The electrostatic precipitator, heat exchanger, and spray box are sequentially installed inside the main frame, with the electrostatic precipitator and heat exchanger, and the heat exchanger and spray box, being independently connected in pairs via pipes. Through the electrostatic precipitator, the flue gas undergoes further purification, effectively removing fine particles and harmful substances. The electrostatic precipitator technology utilizes an electric field to charge the particles in the flue gas and adsorb them onto the collecting plates, thereby purifying the flue gas and effectively reducing environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving technology for lime kilns, specifically to an energy-saving device for flue gas circulation in a double-chamber lime kiln based on waste heat recovery. Background Technology

[0002] In industrial production, efficient energy utilization and energy conservation and emission reduction have always been key issues. Lime kilns, as crucial equipment in lime production, generate large amounts of high-temperature flue gas during operation. Directly releasing the waste heat carried by this flue gas not only results in enormous energy waste but may also cause adverse environmental impacts such as thermal pollution. Currently, with increasingly stringent environmental protection requirements and the pursuit of efficient energy utilization, how to recover and rationally utilize the waste heat from lime kiln flue gas has become an urgent problem to be solved.

[0003] Traditional lime kiln systems have many shortcomings in terms of energy recovery and utilization:

[0004] 1. Traditional lime kiln systems often lack effective waste heat recovery devices, resulting in a large amount of heat energy being emitted into the atmosphere with the flue gas, causing a great waste of energy.

[0005] 2. Traditional lime kiln systems are relatively simple and crude in their flue gas treatment, usually only performing basic dust removal while neglecting the potential for waste heat recovery from the flue gas. Therefore, it is necessary to propose a double-chamber lime kiln flue gas circulation energy-saving device based on waste heat recovery to solve the above-mentioned problems. Summary of the Invention

[0006] Technical Solution: To solve the above-mentioned technical problems, this utility model provides an energy-saving device for flue gas circulation in a double-chamber lime kiln based on waste heat recovery. The device involves first removing dust from the flue gas, then recovering waste heat, followed by spraying and humidification before discharge. The device includes a frame, a workbench, a main frame, an electrostatic precipitator, a heat exchanger, and a spray box. The workbench is mounted on the upper surface of the frame. The main frame is installed on top of the workbench and has an open structure. The electrostatic precipitator, heat exchanger, and spray box are sequentially installed inside the main frame, wherein the electrostatic precipitator and heat exchanger, and the heat exchanger and spray box are all independently connected in pairs via pipes.

[0007] As an improvement, it also includes a dust collection pipe and a particle filter box; the particle filter box is installed on the outer side of the frame body and is connected to the electrostatic dust removal box; the dust collection pipe is installed on the outer end face of the particle filter box, the air outlet end is connected to the electrostatic dust removal box and connected to the suction pump, and the suction pump draws external gas into the dust collection pipe and then into the particle filter box.

[0008] As an improvement, an electrostatic dust removal assembly is installed inside the electrostatic dust removal box to remove dust from the incoming flue gas; the electrostatic dust removal assembly includes a lifting sleeve, an extension rod, a tightening mounting component, and a top mounting plate; the lifting sleeve is provided in two sets, with four sleeves in each set, and the two sets are symmetrically and spaced apart on both sides of the top mounting plate; the extension rod is connected to one end of the lifting sleeve; the top mounting plate is connected to the lifting sleeve through the tightening mounting component.

[0009] As an improvement, it also includes a vibrator, connectors, and electrostatic adsorption plates; the electrostatic adsorption plates are symmetrically installed at intervals on the bottom surface of the top mounting plate; the vibrator is installed on the top surface of the top mounting plate to generate vibration on the top mounting plate.

[0010] As an improvement, a dust removal outlet is also included, which is installed at the bottom of the electrostatic adsorption plate of the electrostatic dust collector to allow for a closing / opening structure.

[0011] As an improvement, the heat exchange box is equipped with heat exchange tubes, a central main pipe, a U-shaped guide pipe, and an exhaust pipe; the central main pipe is installed in the middle of the heat exchange box, with one end extending out of the top of the heat exchange box and connected to the electrostatic dust removal box through the U-shaped guide pipe, and the other end connected to the spray box through the exhaust pipe; the heat exchange tubes are installed around the central main pipe, with one port extending out of the heat exchange box and connected to one port of the steam drum.

[0012] As an improvement, the spray box includes multiple spray heads that are evenly spaced and installed on the top of the spray box.

[0013] As an improvement, it also includes an air outlet groove, an odor venting component, a housing, an L-shaped air outlet pipe, and an air outlet cover; the air outlet groove is located on the side wall of the spray box and is connected to the odor venting component; the housing is the outer shell structure of the odor venting component, and the L-shaped air outlet pipe is installed on the outer side wall through a connector; the L-shaped air outlet pipe is connected to the air outlet groove, and an air outlet cover that can be opened or closed is installed on the top.

[0014] As an improvement, a top protective plate, notification support plate, and screw-on mounting hardware are also included, which are installed above the main frame body.

[0015] Beneficial effects: Compared with the prior art, the device proposed in this utility model has the following advantages:

[0016] 1. By setting up an electrostatic precipitator and a particulate filter box, the flue gas discharged through the dust collection pipe can be filtered sequentially. Inside the electrostatic precipitator, small dust particles are adsorbed by electrostatic adsorption plates before entering the next process. On one hand, the height of the electrostatic precipitator components is adjustable, allowing for adaptation to different situations and strong applicability. On the other hand, by incorporating a vibrator that operates for a period of time, the dust on the adsorption plates is shaken and falls, then discharged through the dust removal outlet at the bottom of the electrostatic precipitator, extending the lifespan of the device.

[0017] 2. By setting up a heat exchange box, the incoming gas is heat-treated to realize the recovery of waste heat for production and daily life, thereby reducing production costs and reducing the waste of resources after direct exhaust.

[0018] 3. By setting up a spray box, the exhaust gas after passing through the heat exchange box is sprayed. Water or acidic liquid media can be selected for spraying to further treat the exhaust gas and reduce the pollution of the atmosphere after emission.

[0019] 4. By setting up an odor venting component, the exhaust gas discharged from the spray box is degassed and then released into the atmosphere after the entire exhaust process is completed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the left cross-sectional structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the right-side cross-sectional structure of the present invention;

[0022] Figure 3 This is a bottom view of the present invention;

[0023] Figure 4 This is a schematic diagram of the electrostatic dust removal component of this utility model.

[0024] In the diagram: 1. Frame; 2. Processing table; 3. Main frame; 4. Electrostatic dust collector; 5. Heat exchanger; 6. Spray box; 7. Electrostatic dust collector assembly; 71. Lifting sleeve; 72. Extension column; 73. Tightening mounting piece; 74. Top mounting plate; 75. Vibrator; 76. Connector; 77. Electrostatic adsorption plate; 8. Dust suction pipe; 9. Particle filter box; 10. Top protective plate; 11. Water outlet pipe; 12. Circulating heat exchange structure; 121. Circulating pipe; 122. U-shaped guide pipe; 123. Central main pipe; 13. Air outlet trough; 14. Odor exhaust assembly; 141. Shell; 142. L-shaped air outlet pipe; 143. Air outlet hood; 15. Spray head. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the examples. These examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] See Figure 1 The diagram shows an energy-saving device for flue gas circulation in a double-chamber lime kiln based on waste heat recovery, comprising a frame 1, a workbench 2, a frame body 3, an electrostatic precipitator 4, a heat exchanger 5, and a spray box 6. The workbench 2 is mounted on the upper surface of the frame 1. The frame body 3 is mounted on top of the workbench 2 and is an open structure. The electrostatic precipitator 4, heat exchanger 5, and spray box 6 are sequentially installed inside the frame body 3, with the electrostatic precipitator 4 being connected to it. The electrostatic precipitator 4 and heat exchanger 5, and the heat exchanger 5 and spray box 6 are all independently connected in pairs via pipes.

[0027] In this utility model, a dust suction pipe 8 and a particle filter box 9 are also included. The particle filter box 9 is installed on the outer side of the frame body 3 and is connected to the electrostatic dust removal box 4. The dust suction pipe 8 is installed on the outer end face of the particle filter box 9, and the air outlet end is connected to the electrostatic dust removal box 4 and connected to the air suction pump. The air suction pump draws external gas into the dust suction pipe 8 and then into the particle filter box 9.

[0028] Furthermore, an electrostatic precipitator assembly 7 is installed inside the electrostatic precipitator box 4 to remove dust from the incoming flue gas. See [link / reference]. Figure 4 As shown, the electrostatic dust removal assembly 7 includes a lifting sleeve 71, an extension rod 72, a tightening mounting component 73, and a top mounting plate 74; the lifting sleeve 71 is provided in two sets, each set having 4 sleeves, and the two sets are symmetrically and spaced apart on both sides of the top mounting plate 74; the extension rod 72 is connected to one end of the lifting sleeve 71; the top mounting plate 74 is connected to the lifting sleeve 71 through the tightening mounting component 73.

[0029] The design of the extension column 72 allows the electrostatic precipitator 7 to be adjusted in height according to actual needs, adapting to different flue gas treatment volumes. By adjusting the relative position of the lifting sleeve 71 and the extension column 72, the position of the electrostatic precipitator 7 within the electrostatic precipitator box 4 can be precisely controlled, thereby optimizing the dust removal effect. Simultaneously, the combined structure of the lifting sleeve 71 and the extension column 72 enhances the stability of the electrostatic precipitator 7 and extends its service life. Furthermore, the lifting sleeve 71 is fixed to the top mounting plate 74 via the tightening mounting piece 73. The installation of the top mounting plate 74 provides a stable support platform for the electrostatic precipitator 7, ensuring its stability during operation. The tightening mounting piece 73 ensures a secure and easily adjustable connection between the lifting sleeve 71 and the top mounting plate 74. When the height or position of the electrostatic precipitator 7 needs adjustment, simply loosening the tightening mounting piece 73 allows for easy and quick adjustment.

[0030] In addition, it also includes a vibrator 75, a connector 76, and an electrostatic adsorption plate 77; the electrostatic adsorption plate 77 is symmetrically installed at intervals on the bottom surface of the top mounting plate 74; the vibrator 75 is installed on the top surface of the top mounting plate 74 and is used to generate vibration on the top mounting plate 74.

[0031] To facilitate dust removal, this invention also includes a dust removal outlet, which is installed at the bottom of the electrostatic adsorption plate 77 of the electrostatic dust collector 4, and has a closable and openable structure. After the vibrator 75 operates, the dust removal outlet can be opened to discharge the dust at the bottom, and the dust removal outlet can be closed after the operation is completed.

[0032] Furthermore, see Figure 3 As shown, the heat exchange box 5 is equipped with heat exchange tubes 12, a central main pipe 123, a U-shaped guide pipe 122, and an exhaust pipe 11. The central main pipe 123 is installed in the middle of the heat exchange box 5, with one end extending out of the top of the heat exchange box 5 and connected to the electrostatic precipitator box 4 via the U-shaped guide pipe 122, and the other end connected to the spray box 6 via the exhaust pipe 11. The heat exchange tubes 12 are installed around the central main pipe 123, with one port extending out of the heat exchange box 5 and connected to one port of the steam drum. The waste heat inside the central main pipe 123 is recovered through the heat exchange tubes 12, completing the heat recovery of the flue gas. The collected heat can be used for industrial production, domestic use, etc.

[0033] The spray box 6 includes multiple spray heads 15, which are evenly spaced and installed on the top of the spray box 6. By uniformly spraying water mist, the heated flue gas is humidified, which not only helps to further purify the flue gas, but also creates favorable conditions for subsequent treatment.

[0034] See Figure 2 As shown, it also includes an exhaust trough 13, an odor exhaust component 14, a housing 141, an L-shaped exhaust pipe 142, and an exhaust hood 143; the exhaust trough 13 is located on the side wall of the spray box 6 and is connected to the odor exhaust component 14; the housing 141 is the outer shell structure of the odor exhaust component 14, and the L-shaped exhaust pipe 142 is installed on the outer side wall through a connector; the L-shaped exhaust pipe 142 is connected to the exhaust trough 13, and an exhaust hood 143 that can be opened or closed is installed on the top.

[0035] The L-shaped exhaust pipe 142 cleverly utilizes the spatial layout, allowing odorous gases to be smoothly discharged along a specific path, avoiding airflow turbulence and odor retention. The exhaust hood 143, as an extension of the L-shaped exhaust pipe 142, has a carefully calculated shape and size to ensure that odorous gases are fully diffused and diluted during the discharge process, thereby minimizing the impact on the surrounding environment and preventing secondary pollution of the outside world during the discharge process.

[0036] In this utility model, a top protective plate 10 is also included, and a notification support plate and a screw-on mounting component 73 are installed above the frame body 3.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An energy-saving device for flue gas circulation in a double-chamber lime kiln based on waste heat recovery, characterized in that: The system includes a frame (1), a workbench (2), a frame body (3), an electrostatic dust collector (4), a heat exchange box (5), and a spray box (6). The workbench (2) is installed on the upper surface of the frame (1). The frame body (3) is installed on top of the workbench (2) and is an open structure. The electrostatic dust collector (4), the heat exchange box (5), and the spray box (6) are installed sequentially inside the frame body (3). The electrostatic dust collector (4) and the heat exchange box (5), and the heat exchange box (5) and the spray box (6) are all installed independently and connected to each other through pipes.

2. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: It also includes a dust collection pipe (8) and a particle filter box (9); the particle filter box (9) is installed on the outer side of the frame body (3) and is connected to the electrostatic dust removal box (4); the dust collection pipe (8) is installed on the outer end face of the particle filter box (9), the air outlet end is connected to the electrostatic dust removal box (4) and connected to the air pump, and the external gas is drawn into the dust collection pipe (8) by the air pump and then enters the particle filter box (9).

3. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: The electrostatic dust collector (4) is equipped with an electrostatic dust collector assembly (7) for dust removal of incoming flue gas. The electrostatic dust collector assembly (7) includes a lifting sleeve (71), an extension rod (72), a tightening mounting piece (73), and a top mounting plate (74). The lifting sleeve (71) is provided in two sets, with four sleeves in each set. The two sets are symmetrically and spaced apart on both sides of the top mounting plate (74). The extension rod (72) is connected to one end of the lifting sleeve (71). The top mounting plate (74) is connected to the lifting sleeve (71) through the tightening mounting piece (73).

4. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 3, characterized in that: It also includes a vibrator (75), a connector (76), and an electrostatic adsorption plate (77); the electrostatic adsorption plates (77) are symmetrically installed at intervals on the bottom surface of the top mounting plate (74); the vibrator (75) is installed on the top surface of the top mounting plate (74) and is used to generate vibration on the top mounting plate (74).

5. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 4, characterized in that: It also includes a dust removal outlet, which is installed at the bottom of the electrostatic adsorption plate (77) of the electrostatic dust removal box (4) so ​​that the opening and closing structure can be opened.

6. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: The heat exchange box (5) is equipped with heat exchange tubes (12), a central main pipe (123), a U-shaped guide pipe (122), and an exhaust pipe (11). The central main pipe (123) is installed in the middle of the heat exchange box (5), with one end extending out of the top of the heat exchange box (5) and connected to the electrostatic dust removal box (4) through the U-shaped guide pipe (122), and the other end connected to the spray box (6) through the exhaust pipe (11). The heat exchange tubes (12) are installed around the central main pipe (123), with one port extending out of the heat exchange box (5) and connected to one port of the steam drum.

7. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: The spray box (6) includes multiple spray heads (15) that are evenly spaced and installed on the top of the spray box (6).

8. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: It also includes an exhaust trough (13), an odor exhaust component (14), a housing (141), an L-shaped exhaust pipe (142), and an exhaust hood (143); the exhaust trough (13) is located on the side wall of the spray box (6) and is connected to the odor exhaust component (14); the housing (141) is the outer shell structure of the odor exhaust component (14), and the L-shaped exhaust pipe (142) is installed on the outer side wall through a connector; the L-shaped exhaust pipe (142) is connected to the exhaust trough (13), and an exhaust hood (143) that can be opened or closed is installed on the top.

9. The double-chamber lime kiln flue gas recirculation energy-saving device based on waste heat recovery according to claim 1, characterized in that: It also includes a top protective plate (10), a notification support plate, and a screw-on mounting piece (73) mounted above the frame body (3).

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