Desulfurization atomization device for cement production

Abstract

The utility model relates to the technical field of desulfurization and atomization of cement, in particular to a desulfurization and atomization device for cement production, which comprises a stirring tank, a desulfurizing agent atomizing and spraying mechanism arranged on the top side in the stirring tank, and a stirring mechanism arranged in the stirring tank, the stirring mechanism comprises a support connecting mechanism arranged on the bottom side in the stirring tank, a conveying cylinder connected with the support connecting mechanism, a plurality of inclined pipes communicated with the top of the outer wall of the conveying cylinder and distributed at intervals, a motor arranged on the upper side of the stirring tank, and a rotating shaft connected with an output shaft of the motor; the spiral conveying blade is connected with the outer wall of the rotating shaft and is in sliding fit with the inner wall of the conveying cylinder; the stirring frames are connected with the outer wall of the rotating shaft and are distributed in an annular array; according to the device, cement raw materials at the bottom in the stirring tank can be conveniently and circularly pushed from bottom to top, so that the cement raw materials at the bottom of the stirring tank can be well mixed and contacted with a sprayed desulfurizing agent, and the mixing uniformity of the desulfurizing agent and the cement raw materials and the desulfurizing effect on the cement raw materials are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement desulfurization atomization, in particular to a cement production desulfurization atomization device. Background Art

[0002] Driven by a commitment to environmental protection, the global cement industry faces the challenge of reducing cement's carbon footprint while maintaining production growth. my country, with the largest number of cement kilns and the largest cement production in the world, is also one of the few countries with the highest total greenhouse gas emissions from the cement industry and the heaviest emission reduction tasks. Currently, sulfur in new dry-process cement kiln production systems in China primarily comes from fuel coal and raw materials. Sulfur dioxide produced by combustion in the precalciner and kiln head flows through the flue gas preheater, where it reacts with the raw meal to achieve desulfurization. The sulfur contained in the raw materials decomposes in the upper preheater to produce SO2. While some SO2 is introduced into the raw mill for drying the raw materials, the majority of the SO2 is discharged from the kiln exhaust with the flue gas. Regularly injecting a desulfurizer into the raw materials for desulfurization can effectively reduce SO2 production.

[0003] Existing cement production desulfurization atomization equipment releases atomized desulfurizer to the desulfurizer atomization spray mechanism integrated on the top of the mixing tank, aiming to promote the effective fusion of raw materials and desulfurizer during the mixing process; however, the raw materials at the bottom of the mixing tank often find it difficult to fully contact and effectively absorb the desulfurizer sprayed from the top, resulting in uneven mixing of the desulfurizer and raw materials, which directly affects the desulfurization effect of the raw materials. Utility Model Content

[0004] The utility model aims to provide a cement production desulfurization atomization device, which is used to solve the problem that in the existing cement production desulfurization atomization device, the raw materials at the bottom of the mixing tank are difficult to fully contact the sprayed desulfurizer, resulting in uneven mixing of the raw materials and the desulfurizer.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cement production desulfurization atomization device, comprising a mixing tank, a desulfurizer atomizing spray mechanism arranged on the top side of the mixing tank, and a mixing mechanism arranged in the mixing tank, the mixing mechanism comprising a supporting and connecting mechanism arranged on the bottom side of the mixing tank, a conveying cylinder connected to the supporting and connecting mechanism, a plurality of inclined tubes connected to the top of the outer wall of the conveying cylinder and arranged at intervals, a motor arranged on the upper side of the mixing tank, a rotating shaft connected to the motor output shaft, a spiral conveying blade connected to the outer wall of the rotating shaft and slidingly matched with the inner wall of the conveying cylinder, and a plurality of stirring frames connected to the outer wall of the rotating shaft and arranged in a circular array, the conveying cylinder is located between the plurality of stirring frames, the lower end of the conveying cylinder is provided with an opening, one end of the rotating shaft passes through the desulfurizer atomizing spray mechanism and extends to the interior of the conveying cylinder, and the rotating shaft is rotatably connected to the conveying cylinder.

[0006] Furthermore, the stirring frame includes a connecting rod arranged on the outer wall of the rotating shaft and located above the conveying cylinder, a stirring rod connected to one end of the connecting rod and arranged vertically, and a plurality of stirring blades arranged on the outer wall of the stirring rod and arranged at intervals and staggered. The plurality of stirring rods are located around the outside of the conveying cylinder.

[0007] Furthermore, the supporting connection mechanism includes a fixing ring provided on the outer wall of the conveying cylinder and located below the inclined tube, and a plurality of fixing columns connected to the lower side of the fixing ring and arranged at intervals, one end of the fixing column is connected to the inner bottom side of the mixing tank.

[0008] Furthermore, a scraping mechanism is provided inside the mixing tank; the scraping mechanism includes an annular scraper plate that slides on the inner wall of the mixing tank, and two electric push rods provided on the upper side of the mixing tank, the motor is located between the two electric push rods, and one end of the electric push rod is connected to the upper side of the annular scraper plate.

[0009] Furthermore, a plurality of openings arranged at intervals are provided on the upper side of the annular scraper plate.

[0010] Furthermore, the desulfurizer atomizing spray mechanism includes an annular shell arranged on the top side of the stirring tank and located between two electric push rods, a plurality of atomizing nozzles arranged on the lower side of the annular shell and spaced apart, and a desulfurizer delivery pipe arranged on the upper side of the annular shell and one end extending to the top of the stirring tank. The interior of the annular shell is a hollow structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model is provided with a conveying cylinder, a plurality of inclined tubes, a motor, and a spiral conveying blade that slides with the inner wall of the conveying cylinder. During the desulfurization process, the motor drives the rotating shaft to rotate, and the rotating shaft drives the plurality of stirring racks and the spiral conveying blades to rotate together. The cement raw materials at the bottom of the mixing tank enter through the opening at the bottom of the conveying cylinder, and are then pushed by the spiral conveying blades and discharged through a plurality of inclined pipes and scattered on the top of the mixing tank. The desulfurizer atomizing spraying mechanism sprays the desulfurizer on the cement raw materials pushed from the bottom to the top of the mixing tank. Compared with the prior art, the device facilitates the circulation and pushing of the cement raw materials at the bottom of the mixing tank from bottom to top, so that the cement raw materials at the bottom of the mixing tank are well mixed and contacted with the sprayed desulfurizer, thereby improving the uniformity of the mixing of the desulfurizer and the cement raw materials and the desulfurization effect of the cement raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional schematic diagram of the cement production desulfurization atomization device of the present utility model;

[0014] Figure 2 This is a bottom view of the annular shell of the present invention;

[0015] Figure 3 This is a schematic structural diagram of the annular scraper plate of the present utility model;

[0016] Figure 4 This is the system control block diagram of the cement production desulfurization atomization device of the utility model.

[0017] In the figure: 1. stirring tank; 2. desulfurizing agent atomizing spray mechanism; 3. stirring mechanism; 4. scraping mechanism; 5. conveying cylinder; 6. motor; 7. rotating shaft; 8. spiral conveying blade; 9. inclined pipe; 10. connecting rod; 11. stirring rod; 12. stirring blade; 13. fixing ring; 14. fixing column; 15. annular shell; 16. desulfurizing agent conveying pipe; 17. atomizing nozzle; 18. electric push rod; 19. annular scraper; 20. opening; 21. feed pipe; 22. discharge pipe. DETAILED DESCRIPTION

[0018] See also Figure 1-4A desulfurization atomization device for cement production includes a mixing tank 1, a desulfurizer atomizing spray mechanism 2 located on the top side of the mixing tank 1, and a stirring mechanism 3 located inside the mixing tank 1. The bottom of the mixing tank 1 is in a conical bucket shape, and the bottom of the mixing tank 1 is connected to a discharge pipe 22 with a valve on the outer wall. The upper side of the mixing tank 1 is connected to a feed pipe 21. One end of the connection between the feed pipe 21 and the mixing tank 1 is located on one side of the desulfurizer atomizing spray mechanism 2 to prevent the desulfurizer atomizing spray mechanism 2 from obstructing the feeding work of the feed pipe 21; the stirring mechanism 3 includes a supporting connection mechanism connected to the bottom side of the mixing tank 1, a conveying cylinder 5 connected to the supporting connection mechanism, a plurality of inclined pipes 9 connected to the top of the outer wall of the conveying cylinder 5 and arranged at intervals, a motor 6 installed on the upper side of the mixing tank 1, a rotating shaft 7 connected to the output shaft of the motor 6, a spiral conveying blade 8 connected to the outer wall of the rotating shaft 7 and slidingly matched with the inner wall of the conveying cylinder 5, and a plurality of stirring racks connected to the outer wall of the rotating shaft 7 and arranged in a ring array. The conveying cylinder 5 is located between the plurality of stirring racks. The lower end of the conveying cylinder 5 is provided with an opening. One end of the rotating shaft 7 passes through the desulfurization The desulfurization agent atomizing spray mechanism 2 extends into the interior of the conveying cylinder 5, and the rotating shaft 7 is rotatably connected to the conveying cylinder 5. A space is left between the conveying cylinder 5 and the bottom side of the mixing tank 1 to facilitate the entry of cement raw materials into the conveying cylinder 5. During desulfurization treatment, the cement raw materials are added to the mixing tank 1 through the feeding pipe 21, and the motor 6 and the external delivery pump connected to the desulfurization agent atomizing spray mechanism 2 are started. The desulfurization agent is sprayed through the desulfurization agent atomizing spray mechanism 2, and the motor 6 drives the rotating shaft 7 to rotate. The rotating shaft 7 drives multiple stirring frames to stir and mix the cement raw materials. At the same time, the rotating shaft 7 drives the spiral conveying blades 8 to rotate. The cement raw materials at the bottom of the mixing tank 1 enter through the bottom opening of the conveying cylinder 5, and are then transported upward by the spiral conveying blades 8 and discharged to the upper part of the mixing tank 1 through multiple inclined pipes 9, so that the cement raw materials at the bottom are well mixed and contacted with the sprayed desulfurizer. The device facilitates the circulation and pushing of the cement raw materials at the bottom of the mixing tank 1 from bottom to top, so that the cement raw materials at the bottom of the mixing tank 1 are well mixed and contacted with the sprayed desulfurizer, thereby improving the uniformity of the mixing of the desulfurizer and the cement raw materials and the desulfurization effect of the cement raw materials.

[0019] The mixing frame includes a connecting rod 10 connected to the outer wall of the rotating shaft 7 and located above the conveying cylinder 5, a stirring rod 11 connected to one end of the connecting rod 10 and arranged vertically, and a plurality of stirring blades 12 connected to the outer wall of the stirring rod 11 and arranged at intervals and staggered. The plurality of stirring rods 11 are located around the outer periphery of the conveying cylinder 5; the rotation of the rotating shaft 7 drives the connecting rod 10 to rotate, and the stirring rod 11 cooperates with the plurality of stirring blades 12 to stir the cement raw materials horizontally.

[0020] The supporting and connecting mechanism includes a fixing ring 13 connected to the outer wall of the conveying cylinder 5 and located below the inclined tube 9, and a plurality of fixing columns 14 connected to the lower side of the fixing ring 13 and arranged at intervals, one end of the fixing column 14 is connected to the inner bottom side of the mixing tank 1; through the plurality of fixing columns 14 and the fixing ring 13, the conveying cylinder 5 is conveniently supported and connected to the inner bottom side of the mixing tank 1.

[0021] A scraping mechanism 4 is provided inside the mixing tank 1; the scraping mechanism 4 includes an annular scraper plate 19 that slides on the inner wall of the mixing tank 1, two electric push rods 18 provided on the upper side of the mixing tank 1, and the motor 6 is located between the two electric push rods 18. One end of the electric push rod 18 is connected to the upper side of the annular scraper plate 19; the two electric push rods 18 are controlled to open by the controller, and the two electric push rods 18 drive the annular scraper plate 19 to move back and forth up and down to scrape off the cement raw materials adhering to the inner wall of the mixing tank 1.

[0022] The upper side of the annular scraper plate 19 is provided with a plurality of openings 20 arranged at intervals. The plurality of openings 20 can reduce the accumulation of cement raw materials on the annular scraper plate 19 .

[0023] The desulfurizer atomizing spray mechanism 2 includes an annular shell 15 arranged on the top side of the mixing tank 1 and between two electric push rods 18, a plurality of atomizing nozzles 17 arranged on the lower side of the annular shell 15 and arranged at intervals, and a desulfurizer delivery pipe 16 arranged on the upper side of the annular shell 15 and one end extending to the top of the mixing tank 1. The interior of the annular shell 15 is a hollow structure; the desulfurizer delivery pipe 16 is connected to an external desulfurizer storage device, and a delivery pump is provided on the pipe section. When the delivery pump is controlled to be turned on, the delivery pump delivers the desulfurizer to the annular shell 15 through the desulfurizer delivery pipe 16, and sprays it out through a plurality of atomizing nozzles 17 to spray the desulfurizer on the cement raw materials in the mixing tank 1.

[0024] A controller is provided on the outer wall of the mixing tank 1 , and the controller is electrically connected to the motor 6 and the two electric push rods 18 .

[0025] Working principle: During the desulfurization treatment, the cement raw material is added into the mixing tank 1 through the feed pipe 21, and the motor 6 and the external delivery pump connected to the desulfurizer atomizing spray mechanism 2 are started. The delivery pump delivers the desulfurizer in the external desulfurizer storage device to the annular shell 15 through the desulfurizer delivery pipe 16 and sprays it through multiple atomizing nozzles 17. The motor 6 drives the rotating shaft 7 to rotate. During the rotation of the rotating shaft 7, the multiple connecting rods 10 are driven to rotate. The stirring rod 11 cooperates with the multiple stirring blades 12 to stir the cement raw material horizontally. At the same time, the rotating shaft 7 drives the spiral conveying blades 8 to rotate. The cement raw material at the bottom of the mixing tank 1 enters through the bottom opening of the conveying cylinder 5, and is then transported upward by the spiral conveying blades 8 and discharged to the upper part of the mixing tank 1 through multiple inclined pipes 9, so that the cement raw material at the bottom is well mixed and contacted with the sprayed desulfurizer. The device facilitates the circulation and pushing of the cement raw material at the bottom of the mixing tank 1 from bottom to top, so that the cement raw material at the bottom of the mixing tank 1 is well mixed and contacted with the sprayed desulfurizer, thereby improving the uniformity of the mixing of the desulfurizer and the cement raw material and the desulfurization effect of the cement raw material.

[0026] After the desulfurization of the cement raw materials is completed, the controller controls the two electric push rods 18 to open, and the two electric push rods 18 drive the annular scraper 19 to move up and down to scrape off the cement raw materials adhering to the inner wall of the mixing tank 1, open the valve on the discharge pipe 22, and the desulfurized cement raw materials are discharged through the discharge pipe 22.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desulfurization atomization device for cement production, comprising a mixing tank (1), a desulfurization agent atomization spraying mechanism (2) provided on the top side of the mixing tank (1), and a stirring mechanism (3) provided inside the mixing tank (1), characterized in that: The stirring mechanism (3) includes a supporting connection mechanism provided on the bottom side of the interior of the stirring tank (1), a conveying cylinder (5) connected to the supporting connection mechanism, a plurality of inclined tubes (9) communicated with the top of the outer wall of the conveying cylinder (5) and arranged at intervals, a motor (6) provided on the upper side of the stirring tank (1), a rotating shaft (7) connected to the output shaft of the motor (6), a spiral conveying blade (8) connected to the outer wall of the rotating shaft (7) and slidingly matched with the inner wall of the conveying cylinder (5), and a plurality of stirring racks connected to the outer wall of the rotating shaft (7) and arranged in a ring array, wherein the conveying cylinder (5) is located between the plurality of stirring racks, an opening is provided at the lower end of the conveying cylinder (5), one end of the rotating shaft (7) passes through the desulfurizing agent atomizing spray mechanism (2) and extends to the interior of the conveying cylinder (5), and the rotating shaft (7) is rotatably connected to the conveying cylinder (5).

2. A cement production desulfurization atomization device according to claim 1, characterized in that: The stirring frame comprises a connecting rod (10) arranged on the outer wall of the rotating shaft (7) and located above the conveying cylinder (5), a stirring rod (11) connected to one end of the connecting rod (10) and arranged vertically, and a plurality of stirring blades (12) arranged on the outer wall of the stirring rod (11) and arranged at intervals and in a staggered manner. The plurality of stirring rods (11) are located around the outer periphery of the conveying cylinder (5).

3. A cement production desulfurization atomization device according to claim 1, characterized in that: The supporting connection mechanism comprises a fixing ring (13) provided on the outer wall of the conveying cylinder (5) and located below the inclined tube (9), and a plurality of fixing columns (14) connected to the lower side of the fixing ring (13) and arranged at intervals, wherein one end of the fixing column (14) is connected to the inner bottom side of the mixing tank (1).

4. A cement production desulfurization atomization device according to claim 1, characterized in that: A scraping mechanism (4) is provided inside the mixing tank (1); the scraping mechanism (4) comprises an annular scraping plate (19) slidingly fitted on the inner wall of the mixing tank (1), and two electric push rods (18) provided on the upper side of the mixing tank (1); the motor (6) is located between the two electric push rods (18), and one end of the electric push rod (18) is connected to the upper side of the annular scraping plate (19).

5. A cement production desulfurization atomization device as claimed in claim 4, characterized in that: The upper side of the annular scraper plate (19) is provided with a plurality of openings (20) arranged at intervals.

6. A cement production desulfurization atomization device as claimed in claim 4, characterized in that: The desulfurizing agent atomizing spray mechanism (2) comprises an annular shell (15) disposed on the top side of the stirring tank (1) and between two electric push rods (18), a plurality of atomizing nozzles (17) disposed on the lower side of the annular shell (15) and arranged at intervals, and a desulfurizing agent delivery pipe (16) disposed on the upper side of the annular shell (15) and having one end extending to the top of the stirring tank (1). The interior of the annular shell (15) is a hollow structure.

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