An ultra-cyclone calcium carbonate cyclone preheater

Abstract

The present application relates to the technical field of cyclone preheater, and particularly relates to a super-cyclone calcium carbonate cyclone preheater, which comprises a cyclone preheater body, the top of the cyclone preheater body is fixedly connected with a super-cyclone cylinder, and a bulk material distributing device is arranged in the super-cyclone cylinder; the present application changes the exposed transmission pipeline of the traditional preheater, all pipeline channels of the present application are arranged in the preheater, so that the heat loss is reduced; the curved pipe wall is reduced, the collision and friction loss of the material at the curved pipe wall is reduced; the problems of the traditional preheater, such as the condensation of the material into blocks, the sinking of the blocks, and the uneven distribution of the material, are solved; the traditional curved long pipeline is shortened, the circulation of the material and the hot gas flow is solved by the short channel in the preheater, the working cycle is shortened, the heat dissipation is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of cyclone preheater technology, and more particularly to a super-swirling calcium carbonate cyclone preheater. Background Technology

[0002] In the new dry-process cement production technology, the raw materials need to be preheated and decomposed (calcium carbonate) before the calcination process. A cyclone preheater system is used in this preheating and decomposition process. This system consists of multiple stages of preheaters working together. Preheating is achieved by blowing air to heat the raw materials. The cyclone preheater uses a suspension preheating method to preheat and partially decompose the raw materials, ensuring thorough mixing between the raw materials and the hot airflow in the kiln, thus improving heat exchange efficiency. However, while existing cyclone preheaters can meet basic usage requirements, they also have significant drawbacks. The preheater airflow flows from bottom to top... Raw materials fall from above, and airflow alters their descent, carrying them upwards. During this process, the air-material mixture moves along exposed curved pipes. However, at pipe bends, raw materials may accumulate or fall directly after impact, failing to progress with the airflow. Furthermore, the bends in the pipes are prone to wear and have a short service life. Raw materials in the preheater are also prone to caking, affecting heat exchange efficiency. The exhaust gas produced by the preheater after heating the raw materials contains large amounts of carbon dioxide, sulfides, and fine dust, posing serious health risks. Direct emission into the atmosphere would severely pollute the environment. Summary of the Invention

[0003] Therefore, this invention was made in view of the above problems. The purpose of this invention is to solve the problems of easy wear of pipes, low heat exchange efficiency, easy accumulation of raw materials and low heat exchange efficiency by changing the structure of the cyclone preheater and changing the original series pipe structure. The invention changes the traditional complex and curved pipes to make the whole vertical arrangement, and brings the originally exposed pipes into the preheater, reducing heat loss and improving the preheating effect. This invention achieves the above objectives through the following technical solutions.

[0004] A super-swirling calcium carbonate cyclone preheater includes a cyclone preheater body, a super-swirling cylinder fixedly connected to the top of the cyclone preheater body, and a material dispersing device disposed inside the super-swirling cylinder; a gas-material mixing chamber fixedly connected to the bottom of the cyclone preheater body, and an airflow pipe disposed inside the gas-material mixing chamber; the airflow pipe is fixedly connected to a dust removal device via an exhaust gas pipe; the material dispersing device includes an air cover, a rotating plate rotatably connected to the center of the air cover, and a spiral airflow pipe disposed on the top of the rotating plate; stirring rods disposed around the bottom of the rotating plate; a conical material dispersing plate disposed at the bottom of the air cover; a material leakage port disposed around the bottom of the conical material dispersing plate; an inlet pipe disposed at the top of the air cover; and an airflow pipe outlet disposed on the airflow pipe; the dust removal device includes: a shell, an exhaust gas pipe outlet, a filter device, a filter jacket, and a water tank. The system comprises a dust collector, a gas discharge pipe, a dust discharge pipe, and a dust fall pipe. The exhaust gas pipe outlet is the exhaust gas outlet of the exhaust gas pipe. The filter device is connected to the exhaust gas pipe outlet. The filter jacket is fixed in the middle of the housing. The water tank is fixed to the inner wall of the housing. The dust collector is fixedly connected to the water tank. One end of the gas discharge pipe is fixed in the filter jacket, and the other end is located on the outer wall of the housing. One end of the dust fall pipe is connected to the filter jacket, and the dust discharge pipe is located at the bottom of the outer wall of the housing. The filter device includes a filter plate, a connecting rod, a fixing column, and a spring. The filter plate is connected to the connecting rod. The bottom of the fixing column is fixed to the bottom of the housing. A connecting column is provided on the fixing column. The connecting column is hollow, and the spring is placed in the connecting column. The connecting column and the connecting rod are nested together. A deflector block is provided inside the filter jacket. The deflector block is a sloping arc shape.

[0005] Preferably, the conical material tray is equipped with a stirring column.

[0006] Preferably, the bottom of the conical material tray is provided with a material distribution device.

[0007] Preferably, the super vortex tube is fixedly connected to the air cover via a vortex plate; the vortex plate is provided with an airflow inlet.

[0008] Preferably, a material drop pipe is provided at the bottom of the gas-material mixing chamber.

[0009] Preferably, a swirl plate II is provided at the top of the gas-material mixing chamber; gas outlets are provided around the gas-material mixing chamber near the swirl plate II.

[0010] Beneficial effects of this invention:

[0011] 1. Unlike traditional preheaters where the transmission pipes are exposed, this invention places all pipe channels inside the preheater, reducing heat loss.

[0012] 2. The reduced bending of the pipe wall decreases the material loss due to collision and friction at the bends in the pipe wall;

[0013] 3. Solves the problems of material agglomeration and settling in traditional preheaters, as well as uneven material distribution;

[0014] 4. Shorten the traditional long and winding pipes by using short-distance channels inside the preheater to handle materials and improve the flow of hot air, thereby shortening the working cycle, reducing heat loss, and improving work efficiency.

[0015] 5. Utilize airflow to drive the bulk material handling device, making full use of existing airflow resources;

[0016] 6. Treat the waste gas after it has been used in the cyclone preheater, and use the waste gas to drive the operation of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the bulk material handling device of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the dust removal device of the present invention.

[0021] Figure 5 This is a schematic diagram of the filtration device of the present invention.

[0022] Figure 6 This is a top view of the dust removal device of the present invention.

[0023] Figure 7 This is a schematic diagram of the direction-changing block structure of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Cyclone preheater body; 2. Bulk material handling device; 21. Air cover; 22. Spiral airflow pipe; 23. Rotating plate;

[0026] 24. Stirring rod; 25. Feed pipe; 26. Conical material distribution plate; 27. Stirring column; 28. Material outlet; 29. ​​Material distribution device; 3. Super cyclone cylinder; 31. Cyclone plate one; 32. Airflow inlet; 4. Air-material mixing chamber; 41. Cyclone plate two; 42. Air-material outlet; 5. Airflow pipe; 51. Airflow pipe opening; 6. Material drop pipe; 7. Exhaust gas pipe; 8. Dust removal device; 81. Exhaust gas pipe opening; 82. Filter device; 821. Filter plate; 822. Connecting rod; 823. Fixed column; 824. Connecting column; 825. Spring; 83. Filter jacket; 831. Deflector block; 84. Water tank; 85. Dust collector; 86. Gas discharge pipe; 87. Dust discharge pipe; 88. Dust drop pipe. Detailed Implementation

[0027] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various different forms, and therefore the present invention is not limited to the embodiments described below. In addition, for the purpose of more clearly describing the present invention, parts not connected to the invention will be omitted from the drawings.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, a super-swirling calcium carbonate cyclone preheater includes: a cyclone preheater body 1, a material dispersing device 2, a super-swirling cylinder 3, a gas-material mixing chamber 4, an airflow pipe 5, a material drop pipe 6, an exhaust gas pipe 7, and a dust removal device 8.

[0029] The material distribution device 2 includes: an air cover 21, a spiral airflow pipe 22, a rotating plate 23, a stirring rod 24, a feed pipe 25, a conical material distribution plate 26, a stirring column 27, a material outlet 28, and a material distribution device 29.

[0030] The bulk material device 2 is fixed to the top of the preheater, and the air cover 21 is fixed inside. The air cover 21 is equipped with a spiral airflow pipe 22. The bottom end of the spiral airflow pipe 22 passes through the rotating plate 23. When the airflow blows into the spiral airflow pipe 22, since the bottom is located inside the bulk material device 2, the spiral airflow pipe 22 will drive the rotating plate 23 to rotate. The bottom of the rotating plate 23 is equipped with a stirring rod 24, which is fixed to the bottom of the rotating plate 23. One end of the feed pipe 25 extends into the bulk material device 2, and the material enters the conical bulk material tray 26 through the feed pipe 25. The conical bulk material tray 26 is equipped with a stirring column 27 and a discharge port 28. The stirring column 27 is fixedly distributed on the conical bulk material tray 26, and multiple discharge ports 28 are set at the edge of the conical bulk material tray 26. The material distribution device 29 is set at the bottom of the conical bulk material tray 26.

[0031] The super vortex tube 3 is provided with a vortex plate 31 and an airflow inlet 32. The vortex plate 31 is fixed to the tube wall. Loose airflow forms a vortex through the vortex plate 31, and the vortex enters the bottom tube through the airflow inlet 32.

[0032] The gas-material mixing chamber 4 is provided with a second swirl plate 41 and a gas-material outlet 42. The second swirl plate 41 is fixed inside the gas-material mixing chamber 4, and the gas-material mixing chamber 4 is provided with a gas-material outlet 42. The gas-material mixture that generates vortexes is thrown into the cylinder wall through the gas-material outlet 42.

[0033] The airflow duct 5 is provided with an airflow duct port 51. The airflow after gas-material separation enters the airflow duct 5 through the airflow duct port 51, and the airflow duct port 51 is connected to the exhaust gas duct 7.

[0034] The material drop pipe 6 and the exhaust gas pipe 7 are located at the bottom of the last section of the cyclone preheater. The material can be directly discharged through the material drop pipe 6, and one end of the exhaust gas pipe 7 is connected to the dust removal device 8. The exhaust gas is discharged to the dust removal device 8 for treatment through the exhaust gas pipe 7.

[0035] like Figure 4 , Figure 5 , Figure 6 As shown, the dust removal device 8 includes: a shell, an exhaust gas pipe outlet 81, a filter device 82, a filter jacket 83, a water tank 84, a dust collector 85, a gas discharge pipe 86, a dust discharge pipe 87, and a dust fall pipe 88.

[0036] The exhaust gas pipe opening 81 is the exhaust gas outlet of the exhaust gas pipe 7. The filter device 82 is connected to the exhaust gas pipe opening 81. The filter jacket 83 is fixed in the middle of the shell. The water tank 84 is fixed on the inner wall of the shell. The dust collector 85 is fixedly connected to the water tank 84. One end of the gas discharge pipe 86 is fixed in the filter jacket 83, and the other end is located on the outer wall of the shell. One end of the dust discharge pipe 88 is connected to the filter jacket 83. The dust discharge pipe 87 is located at the bottom of the outer wall of the shell.

[0037] The filtration device 82 includes: a filter plate 821, a connecting rod 822, a fixing column 823, a connecting column 824, and a spring 825; two filter plates 821 are provided, respectively located on both sides of the fixing column 823, and the two filter plates 821 are vertically arranged and synchronously rotated and connected by the connecting column 824. The filter plate 821 is connected to the connecting rod 822. The bottom of the fixing column 823 is fixed to the bottom of the housing. The connecting column 824 is provided on the fixing column 823. The connecting rod 822 and the connecting column 824 are connected by a keyway. The connecting column 824 is hollow, and the spring 825 is set in the connecting column 824. The connecting column 824 and the connecting rod 822 are nested and connected.

[0038] The filter interlayer 83 is equipped with a deflector block 831, which is an arc shape with a slope. On the wall of the filter interlayer 83, the deflector block 831 changes the state of the filter plate 821, allowing the filter plate 821 to rotate. When connected to the exhaust gas pipe opening 81, the filter plate 821 is in a vertical state. When the filter plate 821 moves into the filter interlayer 83, the deflector block 831 in the filter interlayer 83 changes the original motion state of the filter plate 821, changing it from a vertical state to a parallel state. The dust collector 85 removes the dust from the filter plate 821 in the parallel state.

[0039] like Figure 7As shown, the deflector block 831 is an arc-shaped block with a certain tilt angle. The deflector block 831 is fixed in the filter interlayer 83 with its inclined slope side facing upward. The filter plate 821 contacts the curved side of the deflector block 831, and the movement state of the filter plate 821 is changed by the tilt angle of the deflector block 831.

[0040] Working principle of this invention:

[0041] Hot air enters from the top of the cyclone preheater. A portion of the airflow passes through the air cover 21 and enters the spiral airflow pipe 22. The bottom of the spiral airflow pipe 22 is a sealed space. The airflow drives the spiral airflow pipe 22 to move, causing the rotating plate 23, which is fixedly connected to the spiral airflow pipe 22, to rotate. A stirring rod 24 is fixed to the bottom of the rotating plate 23. The stirring rod 24 stirs the raw material entering the conical material distribution plate 26 through the feed pipe 25. The conical material distribution plate 26 is equipped with a stirring column 27, which, together with the stirring rod 24, disperses the material. The material is then dispersed into the distribution port 28 located at the edge of the conical material distribution plate 26. In device 29, material enters the inner cylinder through multiple feeding devices 29. A swirl plate 31 is provided on the super swirling cylinder 3. Airflow flows downwards from the upper phase, generating a swirling flow through the swirl plate 31, which enters the inner cylinder through the airflow inlet 32. The swirling flow carries the material, moving in a cyclone-like motion against the cylinder wall. The air-material mixture enters the air-material mixing chamber 4, where heat exchange is more thorough. The material then falls along the cylinder wall due to gravity and friction. Airflow flows downwards through the airflow pipe inlet 51 on the airflow pipe 5, and the material moves downwards through the material drop pipe 6, thus heating the material. The airflow transforms into exhaust gas filled with dust, carbon dioxide, and sulfides. This exhaust gas enters the dust removal device 8 through exhaust gas pipe 7. Exhaust gas pipe outlet 81 is the exhaust outlet of exhaust gas pipe 7. The filter plate 821 in the filtration device 82 is dynamically connected to exhaust gas pipe outlet 81. When the filter plate 821 becomes clogged, the airflow pushes it to move, causing it to enter the filter jacket 83. The filter jacket 83 has an irregular geometric shape. The filter plate 821 and the connecting column 824 on the fixed column 823 form a nested structure. The filter plate 821 can retract, and the airflow passes through the filter... The inner wall of the interlayer 83 is compressed, and because the filter interlayer 83 is equipped with a sloped deflector block 831, the filter plate 821 changes from its original vertical shape to a parallel state, with the dust-filled side facing down. When the filter plate 821 moves to the position below the dust collector 85, the dust is removed by the dust collector 85 and discharged through the dust drop pipe 88. Finally, it is discharged from the dust collection device 8 through the dust discharge pipe 87. Multiple filter plates 821 can be set. When the airflow pushes the filter plate 821 of the blockage column, the filter plate 821 without blockage will move to the exhaust gas pipe opening 81 to continue filtering dust.

Claims

1. A super-swirling calcium carbonate cyclone preheater, comprising a cyclone preheater body (1), characterized in that: The top of the cyclone preheater body (1) is fixedly connected to a super cyclone tube (3), and a material dispersing device (2) is provided inside the super cyclone tube (3); the bottom of the cyclone preheater body (1) is fixedly connected to a gas-material mixing chamber (4), and an airflow pipe (5) is provided inside the gas-material mixing chamber (4); the airflow pipe (5) is fixedly connected to a dust removal device (8) through a waste gas pipe (7); the material dispersing device (2) includes an air cover (21), and a rotating plate is rotatably connected in the middle of the air cover (21). (23) The top of the rotating plate (23) is sealed and fixedly connected to the spiral airflow pipe (22); the bottom of the rotating plate (23) is provided with stirring rods (24); the bottom of the air cover (21) is provided with a conical material distribution plate (26); the bottom of the conical material distribution plate (26) is provided with a material leakage port (28); the top of the air cover (21) is provided with a feed pipe (25), the lower end of the feed pipe (25) extends into the interior of the material distribution device (2); the airflow pipe (5) is provided with an airflow pipe opening (51); The dust removal device (8) includes: a housing, an exhaust gas pipe outlet (81) disposed on the housing and connected to the exhaust gas pipe (7), and a filter device (82) connected to the exhaust gas pipe outlet (81). The housing contains a filter jacket (83), and the filter jacket (83) contains a deflector block (831) for changing the movement state of the filter device (82); the filter device (82) is movably disposed between the exhaust gas duct outlet (81) and the filter jacket (83); a water tank (84) is fixedly disposed inside the housing, and a dust collector (85) for removing dust adhering to the filter device (82) is connected to the water tank (84); when the filter device (82) moves to the position of the dust collector (85)... When placed at the bottom, the dust collector (85) draws in air under negative pressure and removes dust, so that the dust is discharged from the dust removal device (8) through the dust discharge pipe (87); the filter jacket (83) is connected to a dust drop pipe (88), which is connected to the dust discharge pipe (87) located at the bottom of the housing; the filter jacket (83) is also connected to a gas discharge pipe (86), one end of which is located in the filter jacket (83), and the other end extends to the outer wall of the housing to discharge the purified gas; The super vortex cylinder (3) is fixedly connected to the air cover (21) through the first vortex plate (31); an airflow inlet (32) is provided between the material dispersing device (2) and the super vortex cylinder (3); a material drop pipe (6) is provided at the bottom of the gas-material mixing chamber (4); a second vortex plate (41) is provided at the top of the gas-material mixing chamber (4); and gas-material outlets (42) are provided around the gas-material mixing chamber (4) near the second vortex plate (41).

2. The super-swirling calcium carbonate cyclone preheater according to claim 1, characterized in that: The conical material tray (26) is equipped with a stirring column (27).

3. The super-swirling calcium carbonate cyclone preheater according to claim 1, characterized in that: The bottom of the conical material distribution plate (26) is provided with a material distribution device (29).

4. The super-swirling calcium carbonate cyclone preheater according to claim 1, characterized in that: The filter device (82) includes: a filter plate (821), a connecting rod (822), a fixed column (823), a connecting column (824), and a spring (825); the filter plate (821) is connected to the connecting rod (822), the bottom of the fixed column (823) is fixed to the bottom of the housing, the fixed column (823) is provided with a connecting column (824), the connecting column (824) is hollow, the spring (825) is set in the connecting column (824), and the connecting column (824) and the connecting rod (822) are nested together; the filter interlayer (83) is provided with a deflector block (831); the deflector block (831) is an arc with a slope.

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