Dechlorination predecomposition furnace for cement kiln

Abstract

The utility model relates to a cement kiln dechlorination pre-decomposition furnace in the technical field of cement kilns, which comprises a decomposition furnace body, the decomposition furnace body comprises an upper furnace body and a lower furnace body, the upper furnace body is communicated with the lower furnace body through a connecting pipe, a spraying assembly is arranged at the connecting pipe, the spraying assembly comprises a liquid distribution pipe, and the liquid distribution pipe is communicated with the lower furnace body. A liquid distribution cavity is formed in the side wall of the liquid distribution pipe, the liquid distribution cavity is communicated with a liquid inlet pipe, a plurality of spraying holes are uniformly distributed in the inner wall of the liquid distribution pipe in the circumferential direction, and the spraying holes are communicated with the liquid distribution cavity. The spraying holes are uniformly distributed along the inner wall of the liquid distribution pipe along the circumferential direction, so that spraying liquid can be comprehensively and uniformly sprayed into the connecting pipe, the spraying effect is improved, and the effect of the pre-decomposition furnace is favorably improved. The spraying range of spraying liquid is enlarged, spraying dead angles are reduced, and the working effect of the predecomposition furnace is improved.

Description

Technical Field

[0001] This utility model belongs to the field of cement kiln technology, specifically relating to a dechlorination pre-decomposition furnace for cement kilns. Background Technology

[0002] Cement kilns, belonging to the category of building materials equipment, are a type of lime kiln and are key equipment in both dry and wet cement clinker production lines. During operation, cement kilns often require a pre-calciner to process materials. However, existing pre-calciner furnaces generate chloride (Cl) during operation, negatively impacting cement production. Therefore, chloride removal is necessary. Cl removal is typically achieved by spraying a suitable solution using a spray gun at a fixed angle, resulting in a significant blind spot and hindering the removal of harmful elements. To address this issue, we propose a dechlorination pre-calciner for cement kilns. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a cement kiln dechlorination pre-decomposition furnace, comprising a furnace body, an upper furnace body, and a lower furnace body connected by a connecting pipe. A spray assembly is provided at the connecting pipe, comprising a liquid distribution pipe. A liquid distribution chamber is provided within the side wall of the liquid distribution pipe, and the liquid distribution chamber is connected to an inlet pipe. Multiple spray holes communicating with the liquid distribution chamber are evenly distributed circumferentially along the inner wall of the liquid distribution pipe. The even distribution of spray holes along the circumferential direction of the inner wall of the liquid distribution pipe allows for comprehensive and uniform spraying of spray liquid into the connecting pipe, improving the spraying effect and enhancing the efficiency of the pre-decomposition furnace.

[0004] Preferably, the connecting pipe is provided with a liquid storage jacket, the liquid inlet pipe is fixed to the connecting pipe and communicates with the liquid storage jacket, the lower end of the liquid distribution pipe is rotatably connected to the lower furnace body through a bearing, and the upper end of the liquid distribution pipe extends into the liquid storage jacket and is rotatably connected to the connecting pipe through a bearing. The upper end of the liquid distribution pipe located in the liquid storage jacket is provided with a liquid inlet communicating with the liquid distribution chamber, and the liquid distribution pipe is connected to a drive. The drive can make the liquid distribution pipe rotate, so that the spray range of the spray holes is more comprehensive, and the spraying effect is further improved. When the liquid distribution pipe rotates, the spray liquid enters the liquid storage jacket from the liquid inlet pipe, and then enters the liquid distribution chamber from the liquid storage jacket through the liquid inlet, and finally sprays out from the spray holes.

[0005] Preferably, the drive includes a stepper motor, the output end of which is connected to a gear. A rack is fixed on the outer wall of the liquid distribution pipe, and the gear meshes with the rack. The stepper motor drives the gear to rotate, and the gear meshes with the rack, thereby driving the liquid distribution pipe to rotate. The stepper motor can be fixed to the lower furnace body.

[0006] Working principle: The stepper motor drives the gear to rotate, and the gear meshes with the rack, thereby driving the liquid distribution pipe to rotate. The liquid inlet pipe introduces the spray liquid into the liquid storage jacket. The spray liquid enters the liquid distribution chamber through the liquid inlet and is sprayed out from the spray hole. As the liquid distribution pipe rotates, the spray liquid coverage becomes more comprehensive, reducing spray dead zones and improving the working efficiency of the pre-decomposition furnace.

[0007] This utility model also includes other components that enable the normal operation of a cement kiln dechlorination pre-decomposition furnace, such as a stepper motor control component, a control component for controlling the liquid inlet pipe (such as a liquid pump), and sealing components (bearing rotation seals) between the connecting pipe and the liquid distribution pipe, and between the liquid distribution pipe and the lower furnace body. These are all conventional technical means in the art. In addition, devices or components not limited in this utility model, such as gears and racks, all adopt conventional technical means and conventional equipment in the art.

[0008] The beneficial effects of this invention are: it increases the spraying range of the spraying liquid, reduces spraying dead zones, improves the working efficiency of the precalciner, and is beneficial to cement production. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic diagram of the structure of a cement kiln dechlorination pre-decomposition furnace according to an embodiment of the present utility model;

[0011] Figure 2 for Figure 1 Cross-sectional view of the central spray assembly.

[0012] In the diagram: 1. Lower furnace body; 2. Liquid distribution pipe; 3. Rack; 4. Connecting pipe; 5. Liquid inlet pipe; 6. Gear; 7. Stepper motor; 8. Spray hole; 9. Liquid storage jacket; 10. Liquid distribution chamber; 11. Upper furnace body. Detailed Implementation

[0013] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0014] Example

[0015] like Figure 1-2As shown, this utility model provides a cement kiln dechlorination pre-decomposition furnace, including a decomposition furnace body. The decomposition furnace body includes an upper furnace body 11 and a lower furnace body 1, which are connected by a connecting pipe 4. A spray assembly is provided at the connecting pipe 4. The spray assembly includes a liquid distribution pipe 2, and a liquid distribution chamber 10 is provided in the side wall of the liquid distribution pipe 2. The liquid distribution chamber 10 is connected to a liquid inlet pipe 5. Multiple spray holes 8 are evenly distributed circumferentially on the inner wall of the liquid distribution pipe 2, communicating with the liquid distribution chamber. The spray holes 8 are evenly distributed circumferentially on the inner wall of the liquid distribution pipe 2, which can spray the spray liquid evenly into the connecting pipe 4, improve the spraying effect, and help improve the efficiency of the pre-decomposition furnace.

[0016] The connecting pipe 4 is provided with a liquid storage jacket 9. The liquid inlet pipe 5 is fixed to the connecting pipe 4 and communicates with the liquid storage jacket 9. The lower end of the liquid distribution pipe 2 is rotatably connected to the lower furnace body 1 through a bearing 1. The upper end of the liquid distribution pipe 2 extends into the liquid storage jacket 9 and is rotatably connected to the connecting pipe 4 through a bearing 2. The upper end of the liquid distribution pipe 2 located in the liquid storage jacket 9 is provided with a liquid inlet communicating with the liquid distribution chamber. The liquid distribution pipe 2 is connected to a drive. The drive can make the liquid distribution pipe 2 rotate, so that the spray range of the spray hole 8 is more comprehensive, and the spraying effect is further improved. When the liquid distribution pipe 2 rotates, the spray liquid enters the liquid storage jacket 9 from the liquid inlet pipe 5, and enters the liquid distribution chamber 10 from the liquid storage jacket 9 through the liquid inlet, and finally sprays out from the spray hole 8.

[0017] The drive includes a stepper motor 7, the output end of which is connected to a gear 6. A rack 3 is fixed on the outer wall of the liquid distribution pipe 2, and the gear 6 meshes with the rack 3. The stepper motor 7 drives the gear 6 to rotate, and the gear 6 meshes with the rack 3, thereby driving the liquid distribution pipe 2 to rotate. The stepper motor 7 can be fixed on the lower furnace body 1.

[0018] During operation, the stepper motor 7 drives the gear 6 to rotate, and the gear 6 meshes with the rack 3, thereby driving the liquid distribution pipe 2 to rotate. The liquid inlet pipe 5 introduces the spray liquid into the liquid storage jacket 9. The spray liquid enters the liquid distribution chamber 10 through the liquid inlet and is sprayed out from the spray hole 8. As the liquid distribution pipe 2 rotates, the spray liquid spraying range becomes more comprehensive, reducing spray dead angles and improving the working efficiency of the pre-decomposition furnace.

[0019] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dechlorination pre-decomposition furnace for cement kilns, comprising a furnace body, the furnace body including an upper furnace body and a lower furnace body, the upper furnace body and the lower furnace body being connected by a connecting pipe, characterized in that: The connecting pipe is equipped with a spray assembly, which includes a liquid distribution pipe. The liquid distribution pipe has a liquid distribution chamber inside its side wall. The liquid distribution chamber is connected to an inlet pipe. Multiple spray holes that communicate with the liquid distribution chamber are evenly distributed circumferentially on the inner wall of the liquid distribution pipe.

2. The dechlorination pre-decomposition furnace for cement kilns according to claim 1, characterized in that: The connecting pipe is provided with a liquid storage jacket, the liquid inlet pipe is fixed on the connecting pipe and communicates with the liquid storage jacket, the lower end of the liquid distribution pipe is rotatably connected to the lower furnace body through bearing one, the upper end of the liquid distribution pipe extends into the liquid storage jacket and is rotatably connected to the connecting pipe through bearing two, the upper end of the liquid distribution pipe located in the liquid storage jacket is provided with a liquid inlet communicating with the liquid distribution chamber, and the liquid distribution pipe is connected to a drive.

3. The dechlorination pre-decomposition furnace for cement kilns according to claim 2, characterized in that: The drive includes a stepper motor, the output end of which is connected to a gear, and a rack is fixed on the outer wall of the liquid distribution pipe, with the gear meshing with the rack.

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