Circulating fluidized bed capable of reducing generation of carbon monoxide
By designing a variety of detachable hoods, selecting appropriate hoods according to the fluidization state and process requirements, controlling primary air volume, and optimizing furnace combustion, the problem of the existing circulating fluidized bed boiler hood affecting the carbon monoxide production, and achieving the effect of reducing carbon monoxide production and meeting standard emissions.
Patent Information
- Application Number
- CN202421818245.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The hood design of existing circulating fluidized bed boilers has problems affecting the amount of carbon monoxide production, and the hood is inconvenient to replace it.
A detachable hood system is designed. The hood is equipped with a variety of air outlet sizes and orientations. Select a suitable hood according to different fluidization states and process requirements, control the primary air volume, and optimize the furnace combustion.
By optimizing the hood design, the production of carbon monoxide is reduced and emissions are achieved.
Smart Images
Figure CN222925489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of circulating fluidized beds, and in particular to a circulating fluidized bed for reducing carbon monoxide generation. Background Art
[0002] The air chamber of the existing circulating fluidized bed boiler is provided with air caps. As one of the air distribution components, the air volume and direction of the air outlet of the air cap will affect the intake air volume, and thus affect the generation amount of carbon monoxide during combustion. Moreover, different fluidization states and different processes have different requirements for the air cap. The air caps in the prior art usually adopt a welded fixing method, and it is inconvenient to replace the air cap.
[0003] Therefore, it is necessary to improve the circulating fluidized bed in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the defects existing in the prior art, and provide a circulating fluidized bed for reducing carbon monoxide generation. According to the corresponding fluidization state and process requirements, air caps with corresponding air outlet hole sizes and orientations are selected for installation, the primary air volume is controlled, and the furnace combustion is optimized, so as to achieve the purpose of reducing carbon monoxide generation and realize up-to-standard emission.
[0005] To achieve the above technical effects, the technical solution of the utility model is: a circulating fluidized bed for reducing carbon monoxide generation, including a housing, a air distribution plate fixedly connected to the housing, air rods passing through the air distribution plate, and air caps detachably and fixedly connected to the air rods. One end of the air rod is arranged on the air inlet side of the air distribution plate, the other end of the air rod is arranged on the air outlet side of the air distribution plate, the air caps are arranged on the air outlet side of the air distribution plate, the side wall of the air cap is provided with air outlet holes, and there are several types of air caps, and the air outlet holes of different air caps have different orientations and sizes.
[0006] Preferably, the side wall of the air rod is provided with air outlet strips, and several air outlet strips are arranged along the circumferential direction of the air rod.
[0007] Preferably, the air cap is threadedly connected to the air rod, and the air outlet holes are communicated with the air outlet strips.
[0008] Preferably, the side wall of the air rod is provided with a sealing convex ring, the bottom wall of the air cap is provided with a sealing concave ring, and the sealing convex ring and the sealing concave ring are hermetically matched.
[0009] Preferably, the inner wall of the air cap is provided with a groove hermetically matched with the top end of the side wall of the air rod.
[0010] Preferably, the orientation of the air outlet holes is horizontally arranged, or inclined upwardly arranged, or inclined downwardly arranged.
[0011] Preferably, a wind guide plate is arranged in the air outlet hole.
[0012] Preferably, the wind guide plate is rotatably arranged with damping, and the axial line direction of the rotation axis of the wind guide plate is perpendicular to the axial line direction of the wind cap.
[0013] Preferably, a convex ring for supporting the air distribution plate is fixedly arranged in the shell body, and the air distribution plate is fixedly connected with the convex ring.
[0014] The advantages and beneficial effects of the present utility model are as follows: The circulating fluidized bed structure of the present utility model for reducing carbon monoxide generation is reasonable. The wind cap and the wind rod are designed to be detachable. There are various types of wind caps. According to the corresponding fluidization state and process requirements, a wind cap with a corresponding air outlet hole size and orientation is selected for installation, the primary air volume is controlled, and the furnace combustion is optimized, so as to achieve the purpose of reducing carbon monoxide generation and realizing up-to-standard emission. Description of the Drawings
[0015] Figure 1 is a schematic structural diagram of an embodiment of the circulating fluidized bed of the present utility model for reducing carbon monoxide generation;
[0016] Figure 2 is Figure 1 an exploded view of
[0017] Figure 3 is a schematic structural diagram of the wind cap and the wind rod connected;
[0018] Figure 4 is Figure 3 an exploded view of
[0019] Figure 5 is Figure 3 a sectional view of
[0020] Figure 6 is Figure 4 a sectional view of
[0021] Figure 7 is another schematic structural diagram of the wind cap;
[0022] Figure 8 is still another schematic structural diagram of the wind cap;
[0023] In the figure: 1. Shell body; 11. Convex ring; 2. Air distribution plate; 3. Wind rod; 31. Air outlet strip; 32. Sealing convex ring; 4. Wind cap; 41. Air outlet hole; 42. Sealing concave ring; 43. Groove; 5. Wind guide plate. Detailed Embodiment
[0024] The following will further describe the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and cannot be used to limit the protection scope of the present utility model.
[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Embodiment
[0026] As Figures 1-5 shown, the circulating fluidized bed for reducing carbon monoxide generation in the embodiment includes a housing 1, a air distribution plate 2 fixedly connected to the housing 1, a air rod 3 passing through the air distribution plate 2, and an air cap 4 detachably and fixedly connected to the air rod 3. One end of the air rod 3 is arranged on the air inlet side of the air distribution plate 2, the other end of the air rod 3 is arranged on the air outlet side of the air distribution plate 2, the air cap 4 is arranged on the air outlet side of the air distribution plate 2, and the side wall of the air cap 4 is provided with air outlet holes 41. There are several types of air caps 4, and the air outlet holes 41 of different air caps 4 have different orientations and sizes.
[0027] Through such a design, multiple air caps 4 are provided, and the air outlet holes 41 of different air caps 4 are different or there are no air outlet holes. According to actual production requirements, the corresponding air caps 4 are assembled to control the primary air volume and direction, optimize the furnace combustion, and can reduce the generation of carbon monoxide.
[0028] Specifically, the side wall of the air rod 3 is provided with air outlet strips 31, and several air outlet strips 31 are arranged along the circumferential direction of the air rod 3.
[0029] Through such a design, the air outlet of the air rod 3 is increased, and the air outlet size and direction are adjusted by controlling the air outlet holes 41 of the air cap 4.
[0030] Specifically, the air cap 4 is threadedly connected to the air rod 3, and the air outlet holes 41 are communicated with the air outlet strips 31.
[0031] Through such a design, the purpose of detachable air cap 4 is achieved.
[0032] Furthermore, the side wall of the air rod 3 is provided with a sealing convex ring 32, the bottom wall of the air cap 4 is provided with a sealing concave ring 42, and the sealing convex ring 32 is in sealing cooperation with the sealing concave ring 42.
[0033] Through such a design, it is ensured that the air blown out by the air rod 3 blows out from the air outlet holes 41 of the air cap 4.
[0034] Furthermore, a groove 43 which is in sealing fit with the top end of the side wall of the air rod 3 is arranged on the inner wall of the air cap 4.
[0035] Through such a design, the sealed connection between the air cap 4 and the air rod 3 is further improved.
[0036] Specifically, the orientation of the air outlet holes 41 is horizontally arranged, or inclined upward, or inclined downward.
[0037] Through such a design, the diversity of the air cap 4 is reflected.
[0038] Furthermore, a wind guide plate 5 is arranged in the air outlet holes 41.
[0039] Through such a design, the wind guide plate 5 can guide the air outlet direction.
[0040] Furthermore, the wind guide plate 5 is rotatably arranged with damping, and the axial center line direction of the rotation axis of the wind guide plate 5 is perpendicular to the axial center line direction of the air cap 4.
[0041] Through such a design, by adjusting the inclination direction of the wind guide plate 5 to adjust the air outlet direction of the air cap 4, the design of multiple air caps 4 is avoided.
[0042] Specifically, a convex ring 11 for supporting the air distribution plate 2 is fixedly arranged in the housing 1, and the air distribution plate 2 is fixedly connected with the convex ring 11.
[0043] Through such a design, the purpose of the fixed connection between the air distribution plate 2 and the housing 1 is achieved.
[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A circulating fluidized bed for reducing carbon monoxide production, characterized in that: The invention comprises a shell (1), an air distribution plate (2) fixedly connected to the shell (1), a wind rod (3) inserted into the air distribution plate (2), and a wind cap (4) detachably fixedly connected to the wind rod (3), wherein one end of the wind rod (3) is arranged on the air inlet side of the air distribution plate (2), and the other end of the wind rod (3) is arranged on the air outlet side of the air distribution plate (2); the wind cap (4) is arranged on the air outlet side of the air distribution plate (2); a side wall of the wind cap (4) is provided with an air outlet hole (41); the wind cap (4) is provided with several types, and the air outlet holes (41) of different wind caps (4) have different directions and sizes.
2. The circulating fluidized bed for reducing carbon monoxide production according to claim 1, characterized in that: The side wall of the wind rod (3) is provided with an air outlet strip (31), and a plurality of the air outlet strips (31) are provided along the circumference of the wind rod (3).
3. The circulating fluidized bed for reducing carbon monoxide production according to claim 2, characterized in that: The wind cap (4) is threadedly connected to the wind rod (3), and the air outlet hole (41) is arranged in communication with the air outlet strip (31).
4. The circulating fluidized bed for reducing carbon monoxide production according to claim 3, characterized in that: The side wall of the wind rod (3) is provided with a sealing convex ring (32), and the bottom wall of the wind cap (4) is provided with a sealing concave ring (42), and the sealing convex ring (32) and the sealing concave ring (42) are in sealing cooperation.
5. The circulating fluidized bed for reducing carbon monoxide production according to claim 4, characterized in that: The inner wall of the wind cap (4) is provided with a groove (43) which is sealed and matched with the top end of the side wall of the wind rod (3).
6. The circulating fluidized bed for reducing carbon monoxide production according to claim 1, characterized in that: The air outlet holes (41) are arranged horizontally, inclined upwards, or inclined downwards.
7. The circulating fluidized bed for reducing carbon monoxide production according to claim 1, characterized in that: An air guide plate (5) is arranged in the air outlet hole (41).
8. The circulating fluidized bed for reducing carbon monoxide production according to claim 7, characterized in that: The wind guide plate (5) is arranged to be rotationally damped, and the axis centerline direction of the rotation axis of the wind guide plate (5) is perpendicular to the axis centerline direction of the wind cap (4).
9. The circulating fluidized bed for reducing carbon monoxide production according to claim 1, characterized in that: A convex ring (11) for supporting the air distribution plate (2) is fixedly arranged in the shell (1), and the air distribution plate (2) is fixedly connected to the convex ring (11).