Integrated heat energy recovery brick kiln flue gas circulation channel
By designing an integrated heat recovery brick kiln flue gas circulation channel, using high-temperature flue gas to heat limestone and capture SO2, the problem of unused residual heat and SO2 emissions of brick kilns is solved, and efficient energy utilization and environmental protection are achieved.
Patent Information
- Application Number
- CN202421276536.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The surplus heat generated by existing brick kilns during the production process has not been effectively utilized, resulting in waste of energy, and the SO2 generated during the combustion of coal gangue is directly discharged, polluting the environment.
Design an integrated heat energy recovery brick kiln flue gas circulation channel, through a heat energy recovery box and a heat energy recovery component, high-temperature flue gas is introduced into the heating tank, spoiler is used to drain the flue gas, heat limestone, and capture SO2 through chemical reactions to reduce harmful gases emission.
The effective utilization of waste heat generated by brick kilns is achieved, energy utilization is improved, energy consumption is reduced on limestone, and SO2 emissions are reduced through chemical capture, protecting the environment.
Smart Images
Figure CN222460322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brick kiln smoke treatment, in particular to an integrated heat energy recovery brick kiln smoke circulation channel. Background Art
[0002] Gangue sintered brick is a building material produced by sintered brick process with gangue as the main raw material. Due to the technical reasons of gangue sorting, the gangue content in all-gangue sintered brick far exceeds the maximum allowable amount required for sintered brick. The calorific value is generally above 600kcal / kg, and the surplus waste heat is generally above 330kcal / kg. The calorific value is calculated by converting the carbon content of each group (two rows) of bricks into calorific value. The heat contained in each group is: 537 6×3.2×600=10321920kcal (equivalent to 1474.56kg standard coal), calculated based on 44.44 sets of fired bricks (238909 bricks) per day, is equivalent to 65.53t of coal per day. However, only about 45% of the heat is needed to sinter bricks, so the surplus or ineffective heat accounts for about 55%, which is equivalent to 36.00t of standard coal per day (calculated based on 65.53t).
[0003] In actual production, this heat is discharged from the kiln top, or a small part is used to recover the hot water boiler. The energy utilization rate is not high, resulting in energy waste. In addition, when the high-temperature flue gas is discharged, the direct emission of SO2 produced by the combustion process of coal gangue will have an impact on the environment.
[0004] Therefore, an integrated heat recovery brick kiln flue gas circulation channel is proposed. Utility Model Content
[0005] The utility model aims to provide an integrated heat recovery brick kiln smoke circulation channel, in order to make full use of the surplus heat generated by the tunnel kiln when calcining coal gangue to calcine limestone, improve energy utilization efficiency, and realize a co-firing technology, that is, both lime and coal gangue are prepared in the same process, thereby improving production efficiency, capturing SO2 emitted during the combustion of coal gangue through chemical reactions, reducing environmental pollution, and improving environmental protection benefits, as well as economic benefits.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] The integrated heat recovery brick kiln smoke circulation channel comprises: a heat recovery box, a plurality of rollers are evenly mounted at the corners of the bottom of the heat recovery box, and a heat recovery component is arranged in the heat recovery box;
[0008] The heat recovery component includes a heating groove opened on the side wall of the heat recovery box, and a slide groove is symmetrically opened on the bottom wall of the heating groove. A placement plate is slidably installed on the slide groove, and a slide rail matched with the slide groove is fixedly installed on the bottom end of the placement plate. Limestone is stacked on the top of the placement plate, and a sealing plate matched with the heat recovery box is fixedly installed on the side wall of the placement plate.
[0009] Preferably, a high-temperature flue gas inlet pipe connected to the heating tank is fixedly mounted on the side wall at the top of the heat recovery box.
[0010] Preferably, a plurality of spoilers are evenly and fixedly mounted on the top wall of the heating tank.
[0011] Preferably, an exhaust pipe is fixedly mounted on the side wall at the top end of the sealing plate, and the exhaust pipe passes through the sealing plate.
[0012] Preferably, a driving assembly is also provided at the bottom end of the heat energy recovery box, and the driving assembly includes a movable opening groove opened on the bottom wall of the heating groove, and a threaded screw is rotatably installed in the movable opening groove, and a movable ring is also sleeved on the outer side of the threaded screw, and the top wall of the movable ring is fixedly connected to the bottom wall of the placement plate.
[0013] Preferably, a threaded hole matching the threaded screw is provided at the center of the movable ring.
[0014] Preferably, a motor is fixedly mounted on the side wall of the heat recovery box, and the output end of the motor is fixedly connected to the central axis of the threaded screw.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. By setting up a heat recovery component, the high-temperature flue gas inlet pipe can directly introduce the high-temperature flue gas generated in the brick kiln into the heating tank, and the spoiler can guide the high-temperature flue gas entering the heating tank, so that the high-temperature flue gas can heat the limestone, and the waste heat generated by the brick kiln can be utilized, which can save energy consumption and improve energy utilization. The calcined limestone can bring certain economic benefits, and the limestone will react chemically with the SO2 emitted when the coal gangue is burned in the brick kiln during the heating process to generate CaSO4, which can avoid SO2 from being directly discharged into the atmosphere, reduce the emission of harmful gases, and achieve the purpose of environmental protection.
[0017] 2. By setting up a driving component, the motor after power-on can drive the threaded screw to rotate in the movable open groove. At this time, the movable ring can slide along the threaded screw through the threaded hole. At this time, the placement plate can slide in the slide groove on the bottom wall of the heating tank through the slide rail. By controlling the rotation direction of the motor, the sliding direction of the placement plate can be changed, which makes it convenient for the placement plate to slide out of the heating tank and re-attach to the heat recovery box, which is convenient for loading and unloading limestone, can avoid manual movement of the placement plate, and can reduce the labor burden of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of the heat recovery box in the embodiment of the utility model;
[0019] Figure 2 It is a schematic diagram of the side cross-sectional structure of the heat recovery box in the embodiment of the utility model;
[0020] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the heat recovery box in the embodiment of the utility model;
[0021] Figure 4 It is a schematic diagram of the structure of placing the top of the plate in the embodiment of the utility model.
[0022] In the figure: 1. heat recovery box; 2. high-temperature flue gas inlet pipe; 3. motor; 4. roller; 5. exhaust pipe; 6. sealing plate; 7. limestone; 8. placement plate; 9. threaded screw; 10. movable opening groove; 11. spoiler; 12. heating groove; 13. slide groove; 14. slide rail; 15. movable ring; 16. threaded hole. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0025] Embodiment 1:
[0026] See also Figures 1 to 3 , the integrated heat recovery brick kiln smoke circulation channel comprises: a heat recovery box 1, a plurality of rollers 4 are evenly installed at the corners of the bottom of the heat recovery box 1, and a heat recovery component is arranged in the heat recovery box 1;
[0027] The heat recovery component includes a heating groove 12 opened on the side wall of the heat recovery box 1, and a slide groove 13 is symmetrically opened on the bottom wall of the heating groove 12. A placement plate 8 is slidably installed on the slide groove 13, and a slide rail 14 compatible with the slide groove 13 is fixedly installed on the bottom end of the placement plate 8. Limestone 7 is stacked on the top of the placement plate 8, and a sealing plate 6 compatible with the heat recovery box 1 is fixedly installed on the side wall of the placement plate 8.
[0028] See also Figure 2 A high-temperature flue gas inlet pipe 2 connected to the heating tank 12 is fixedly installed on the side wall at the top of the heat recovery box 1.
[0029] See also Figure 2 A plurality of spoilers 11 are evenly and fixedly mounted on the top wall of the heating tank 12.
[0030] See also Figure 2 An exhaust pipe 5 is fixedly mounted on the side wall at the top of the sealing plate 6, and the exhaust pipe 5 passes through the sealing plate 6.
[0031] In this embodiment, when in use, the high-temperature flue gas inlet pipe 2 can directly introduce the high-temperature flue gas generated in the brick kiln into the heating tank 12, and the spoiler 11 can guide the high-temperature flue gas entering the heating tank 12, so that the high-temperature flue gas can heat the limestone 7, and the waste heat generated by the brick kiln can be utilized, which can save energy consumption and improve energy utilization. The calcined limestone 7 can bring certain economic benefits, and the limestone 7 will react chemically with the SO2 emitted when the coal gangue is burned in the brick kiln during the heating process to generate CaSO4, which can prevent SO2 from being directly discharged into the atmosphere, reduce the emission of harmful gases, and achieve the purpose of environmental protection.
[0032] Embodiment 2:
[0033] See also Figures 1 to 4 , the flue gas circulation channel also includes: a driving component arranged at the bottom end of the heat recovery box 1, the driving component includes a movable opening groove 10 opened on the bottom wall of the heating groove 12, and a threaded screw 9 is rotatably installed in the movable opening groove 10. A movable ring 15 is also sleeved on the outer side of the threaded screw 9, and the top wall of the movable ring 15 is fixedly connected to the bottom wall of the placement plate 8.
[0034] See also Figure 4 A threaded hole 16 matching the threaded screw rod 9 is provided at the center of the movable ring 15.
[0035] See also Figure 4 A motor 3 is also fixedly installed on the side wall of the heat recovery box 1, and the output end of the motor 3 is fixedly connected to the central axis of the threaded screw 9.
[0036] In the present embodiment, when in use, the motor 3 after being energized can drive the threaded screw 9 to rotate in the movable open groove 10. At this time, the movable ring 15 can slide along the threaded screw 9 through the threaded hole 16. At this time, the placement plate 8 can slide in the slide groove 13 on the bottom wall of the heating groove 12 through the slide rail 14. By controlling the rotation direction of the motor 3, the sliding direction of the placement plate 8 can be changed, which facilitates the placement plate 8 to slide out of the heating groove 12 and re-attach to the heat recovery box 1, which is convenient for loading and unloading limestone 7, can avoid manual movement of the placement plate 8, and can reduce the labor burden of the staff.
[0037] Working principle: First, the high-temperature flue gas inlet pipe 2 is fixedly connected to the air outlet of the brick kiln, and the roller 4 at the bottom end of the heat recovery box 1 can facilitate the movement of the heat recovery box 1, and can make the heat recovery box 1 move synchronously with the tunnel kiln, ensuring the flexibility of production. The motor 3 after power-on can drive the threaded screw 9 to rotate in the movable opening groove 10. At this time, the movable ring 15 can slide along the threaded screw 9 through the threaded hole 16. At this time, the placement plate 8 can slide in the slide groove 13 on the bottom wall of the heating groove 12 through the slide rail 14. By controlling the rotation direction of the motor 3, the sliding direction of the placement plate 8 can be changed, which makes it convenient for the placement plate 8 to slide out of the heating groove 12 and re-attach to the heat recovery box 1, which is convenient for loading and unloading limestone 7, and can avoid manual movement of the placement plate 8, which can reduce the staff's Labor burden. When the user puts the limestone 7 into the placement plate 8 and makes the sealing plate 6 fit with the heat recovery box 1, the high-temperature flue gas generated in the brick kiln is directly introduced into the heating tank 12 through the high-temperature flue gas inlet pipe 2, and the spoiler 11 can guide the high-temperature flue gas entering the heating tank 12, so that the high-temperature flue gas can heat the limestone 7, and the waste heat generated by the brick kiln can be utilized, which can save energy consumption and improve energy utilization. The calcined limestone 7 can bring certain economic benefits, and the limestone 7 will react chemically with the SO2 emitted when the coal gangue is burned in the brick kiln during the heating process to generate CaSO4, which can avoid SO2 being directly discharged into the atmosphere, reduce the emission of harmful gases, and achieve the purpose of environmental protection. The treated flue gas can be discharged from the exhaust pipe 5.
[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. Integrated heat recovery brick kiln flue gas circulation channel, including: A heat recovery box (1), characterized in that: a plurality of rollers (4) are evenly mounted at the corners of the bottom end of the heat recovery box (1) for rotation, and a heat recovery component is arranged inside the heat recovery box (1); The heat recovery component comprises a heating groove (12) provided on the side wall of a heat recovery box (1), a slide groove (13) symmetrically provided on the bottom wall of the heating groove (12), a placement plate (8) slidably mounted on the slide groove (13), a slide rail (14) matched with the slide groove (13) fixedly mounted on the bottom end of the placement plate (8), limestone (7) stacked on the top of the placement plate (8), and a sealing plate (6) matched with the heat recovery box (1) fixedly mounted on the side wall of the placement plate (8).
2. The integrated heat recovery brick kiln flue gas circulation channel according to claim 1 is characterized in that: A high-temperature flue gas inlet pipe (2) connected to the heating tank (12) is fixedly mounted on the side wall at the top of the heat energy recovery box (1).
3. The integrated heat recovery brick kiln flue gas circulation channel according to claim 2 is characterized in that: A plurality of spoilers (11) are evenly and fixedly mounted on the top wall of the heating tank (12).
4. The integrated heat recovery brick kiln flue gas circulation channel according to claim 3 is characterized by: An exhaust pipe (5) is fixedly mounted on the side wall at the top end of the sealing plate (6), and the exhaust pipe (5) is arranged to penetrate the sealing plate (6).
5. The integrated heat recovery brick kiln flue gas circulation channel according to claim 1 is characterized in that: The bottom end of the heat recovery box (1) is also provided with a driving assembly, and the driving assembly includes a movable opening groove (10) opened on the bottom wall of the heating groove (12), and a threaded screw (9) is rotatably installed in the movable opening groove (10), and a movable ring (15) is also sleeved on the outer side of the threaded screw (9), and the top wall of the movable ring (15) is fixedly connected to the bottom wall of the placement plate (8).
6. The integrated heat recovery brick kiln flue gas circulation channel according to claim 5 is characterized by: A threaded hole (16) adapted to the threaded screw rod (9) is provided at the center of the movable ring (15).
7. The integrated heat recovery brick kiln flue gas circulation channel according to claim 6 is characterized by: A motor (3) is also fixedly mounted on the side wall of the heat recovery box (1), and the output end of the motor (3) is fixedly connected to the central axis of the threaded screw (9).