Titanium tetrachloride aluminum removal device for adding sodium chloride in boiling chlorination furnace

Abstract

The utility model relates to the field of titanium tetrachloride aluminum removal, in particular to a titanium tetrachloride aluminum removal device for adding sodium chloride into a fluidized bed chlorination furnace, which comprises a fluidized bed furnace and a metering tank, a stock bin is arranged at the left end of the fluidized bed furnace, a mixing tank is fixedly connected to the lower position of the rear end of the stock bin, and the metering tank is fixedly connected to the top of the mixing tank. A barrel cover is movably connected to the top of the metering tank, a piston is fixedly connected to the rear position in the stock bin, and a movable plate is fixedly connected to the lower end of the piston and slidably connected with the stock bin; sodium chloride is placed in the metering tank, the first motor controls the rotating rod and the rotating plate to rotate so that the sodium chloride can be placed in the mixing tank at a proper speed, the sodium chloride is mixed through the stirring rod and then falls into the conveying box, the conveying stirring plate in the conveying box rotates to convey rutile and sodium chloride, and meanwhile the rutile and the sodium chloride are mixed more evenly; the problem that when sodium chloride and rutile or high titanium slag are not uniformly mixed, the aluminum removal efficiency is obviously reduced is solved.

Description

Technical Field

[0001] This utility model relates to the field of titanium tetrachloride aluminum removal, and more particularly to a titanium tetrachloride aluminum removal device with sodium chloride added in a fluidized bed chlorination furnace. Background Technology

[0002] Alumina in rutile or high-titanium slag is easily chlorinated to form aluminum trichloride during the chlorination reaction in a fluidized bed furnace. Aluminum trichloride is an inorganic compound with the chemical formula AlCl3. Aluminum chloride has a very low melting and boiling point and will sublimate. It exists in a gaseous state in the cyclone separator and is not easily removed, so it enters the condensation system. After condensation in the condensation system, aluminum trichloride forms crystals that easily adhere to the inner wall of the heat exchanger, thus affecting the heat exchange efficiency of the heat exchanger.

[0003] In a fluidized bed chlorination furnace, sodium chloride can form low-volatility compounds with aluminum chlorides, thereby reducing the impact of aluminum on the final product. When sodium chloride is not mixed evenly with rutile or high-titanium slag, the aluminum removal efficiency will be significantly reduced. This unevenness means that some areas may lack sufficient sodium chloride to effectively fix aluminum during the reaction, while other areas may use excessive sodium chloride, leading to unnecessary material waste and potential operational problems.

[0004] Therefore, in the fluidized bed chlorination furnace, sodium chloride can form low-volatility compounds with aluminum chlorides, thereby reducing the impact of aluminum on the final product. However, when sodium chloride is not mixed evenly with rutile or high-titanium slag, it can lead to a significant reduction in aluminum removal efficiency. To address this issue, a titanium tetrachloride aluminum removal device with added sodium chloride can be designed for the fluidized bed chlorination furnace. Utility Model Content

[0005] To overcome the problem that uneven mixing of sodium chloride with rutile or high-titanium slag can lead to a significant decrease in aluminum removal efficiency, and that some areas may lack sufficient sodium chloride to effectively fix aluminum during the reaction process.

[0006] The technical solution of this utility model is as follows: a titanium tetrachloride aluminum removal device with sodium chloride added in a fluidized bed chlorination furnace, including a fluidized bed furnace and a metering tank. A hopper is provided at the left end of the fluidized bed furnace, and a mixing tank is fixedly connected to the lower rear end of the hopper. A metering tank is fixedly connected to the top of the mixing tank, and a lid is movably connected to the top of the metering tank. A piston is fixedly connected to the rear end of the hopper, and a moving plate is fixedly connected to the lower end of the piston. The moving plate is slidably connected to the hopper. A fixed plate is fixedly connected to the inside of the metering tank, and a motor is fixedly connected to the top of the fixed plate. A rotating rod is fixedly connected to the output end of the motor through the fixed plate. A rotating plate is fixedly connected to the bottom of the rotating rod. Two circular grooves are opened at the bottom of both the rotating plate and the metering tank. A second motor is fixedly connected to the top of the mixing tank, and a stirring rod is fixedly connected to the bottom of the second motor. The stirring rod is rotatably connected to the mixing tank. A conveyor box is fixedly connected to the bottom of the mixing tank, and three conveying and stirring plates are rotatably connected inside the conveyor box.

[0007] Preferably, the piston in the hopper drives the moving plate to control the movement of the rutile in the hopper to enter the mixing tank at a certain speed. At the same time, the sodium chloride, after calculation and weighing, is put into the metering tank. The motor controls the rotating rod and rotating plate to rotate and put the sodium chloride into the mixing tank at an appropriate speed. It is mixed by the stirring rod and then falls into the conveying box. The conveying stirring plate in the conveying box rotates to transport the rutile and sodium chloride and mix them more evenly. This makes the sodium chloride and rutile or high titanium slag evenly mixed. During the reaction, there is enough sodium chloride in certain areas to effectively fix aluminum, which significantly reduces the aluminum content in titanium tetrachloride, ensures better system operation, and improves production efficiency.

[0008] Preferably, a collection frame is provided at the bottom of the conveyor box, a bucket elevator is provided at the top of the collection frame, and a feed hopper is provided at the lower end of the bucket elevator.

[0009] Preferably, the feed hopper is fixedly connected to the fluidized bed furnace, and a cooling cabinet is connected to the upper right end of the fluidized bed furnace.

[0010] Preferably, an air collection box is fixedly connected to the upper inside of the cooling cabinet, and an air inlet pipe is fixedly connected to the top of the air collection box through the cooling cabinet.

[0011] Preferably, three nozzles are fixedly connected to the bottom of the gas collection box, and a cyclone separator is fixedly connected to the right end of the cooling cabinet.

[0012] Preferably, the top of the cyclone separator is fixedly connected to an air outlet pipe, and the bottom of the cyclone separator is fixedly connected to a slag discharge tank.

[0013] Preferably, a slag discharge pipe is fixedly connected to the bottom of the slag discharge tank, and a valve is installed inside the slag discharge pipe.

[0014] The beneficial effects of this utility model are:

[0015] The piston in the hopper drives a moving plate to control the movement of the rutile in the hopper, allowing it to enter the mixing tank at a certain speed. Simultaneously, the calculated and weighed sodium chloride is placed into the metering tank. A motor controls a rotating rod and a rotating plate to add sodium chloride into the mixing tank at an appropriate speed. The mixture is then stirred by a stirring rod and falls into a conveyor box. The conveyor stirring plate in the conveyor box transports the rutile and sodium chloride while mixing them more evenly, ensuring that the sodium chloride is uniformly mixed with the rutile or high-titanium slag. During the reaction, certain areas have sufficient sodium chloride to effectively fix aluminum, significantly reducing the aluminum content in titanium tetrachloride. This ensures better system operation and improves production efficiency, thus providing a foundation for the production of high-quality sponge titanium. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional rear cross-sectional view of the present invention.

[0018] Figure 3 The diagram shown is a three-dimensional rear cross-sectional view of the present invention.

[0019] Figure 4 The diagram shown is a three-dimensional side sectional view of the present invention.

[0020] Figure 5 The diagram shown is a three-dimensional side sectional view of the present invention.

[0021] Explanation of reference numerals in the attached diagram: 1. Fluidized bed furnace; 2. Hopper; 3. Mixing tank; 4. Metering tank; 5. Piston; 6. Moving plate; 7. Bucket lid; 8. Motor 1; 9. Fixed plate; 10. Rotating rod; 11. Rotating plate; 12. Motor 2; 13. Stirring rod; 14. Conveyor box; 15. Conveying and stirring plate; 16. Collection frame; 17. Bucket elevator; 18. Feed hopper; 19. Cooling cabinet; 20. Gas collection box; 21. Gas inlet pipe; 22. Nozzle; 23. Cyclone separator; 24. Gas outlet pipe; 25. Slag discharge tank; 26. Slag discharge pipe; 27. Valve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of a titanium tetrachloride aluminum removal device with sodium chloride added in a fluidized bed chlorination furnace, comprising a fluidized bed furnace 1 and a metering tank 4. A hopper 2 is provided at the left end of the fluidized bed furnace 1, and a mixing tank 3 is fixedly connected to the lower rear end of the hopper 2. The metering tank 4 is fixedly connected to the top of the mixing tank 3, and a lid 7 is movably connected to the top of the metering tank 4. A piston 5 is fixedly connected to the rear end of the hopper 2, and a moving plate 6 is fixedly connected to the lower end of the piston 5. The moving plate 6 is slidably connected to the hopper 2. A fixing plate 9 is fixedly connected to the inside of the metering tank 4, and a motor 8 is fixedly connected to the top of the fixing plate 9. A rotating rod 10 is fixedly connected to the output end of the motor 8 through the fixing plate 9. A rotating plate 11 is fixedly connected to the bottom of the rotating rod 10. Two circular grooves are provided at the bottom of both the rotating plate 11 and the metering tank 4. A second motor 12 is fixedly connected to the top of the mixing tank 3, and a stirring rod 1 is fixedly connected to the bottom of the second motor 12. 3. The stirring rod 13 is rotatably connected to the mixing tank 3. The bottom of the mixing tank 3 is fixedly connected to the conveyor box 14. Three conveying stirring plates 15 are rotatably connected inside the conveyor box 14. The piston 5 in the hopper 2 drives the moving plate 6 to move and control the rutile in the hopper 2 to enter the mixing tank 3 at a certain speed. At the same time, the calculated and weighed sodium chloride is put into the metering tank 4. The motor 8 controls the rotating rod 10 and the rotating plate 11 to rotate and put the sodium chloride into the mixing tank 3 at an appropriate speed. It is mixed by the stirring rod 13 and then falls into the conveyor box 14. The conveying stirring plates 15 in the conveyor box 14 rotate and transport the rutile and sodium chloride while mixing them more evenly, so that the sodium chloride is evenly mixed with rutile or high titanium slag. During the reaction, there is enough sodium chloride in some areas to effectively fix aluminum, significantly reducing the aluminum content in titanium tetrachloride, ensuring better system operation and improving production efficiency.

[0024] Please see Figures 1-5In this embodiment, a collection frame 16 is provided at the bottom of the conveyor box 14, and a bucket elevator 17 is provided at the top of the collection frame 16. A feed hopper 18 is provided at the short end of the bucket elevator 17. The uniformly mixed ruby ​​falls into the collection frame 16 and is simultaneously transported by the bucket elevator 17 to the top of the feed hopper 18, and then enters the fluidized bed furnace 1. The feed hopper 18 is fixedly connected to the fluidized bed furnace 1. A cooling cabinet 19 is connected to the upper right end of the fluidized bed furnace 1. A gas collecting box 20 is fixedly connected to the upper inside of the cooling cabinet 19. An air inlet pipe 21 is fixedly connected to the top of the gas collecting box 20 through the cooling cabinet 19. A nozzle 22 sprays out external low-temperature inert gas to cool the temperature to ≤185℃. Three nozzles 22 are fixedly connected to the bottom of the gas box 20. A cyclone separator 23 is fixedly connected to the right end of the cooling cabinet 19. An outlet pipe 24 is fixedly connected to the top of the cyclone separator 23. A slag discharge tank 25 is fixedly connected to the bottom of the cyclone separator. The cyclone separator 23 separates solid NaAlCl4 from the mixture to obtain solid NaAlCl4 and titanium tetrachloride gas. The titanium tetrachloride gas is treated by the exhaust pipe 24. A slag discharge pipe 26 is fixedly connected to the bottom of the slag discharge tank 25. A valve 27 is installed inside the slag discharge pipe 26. Solid NaAlCl4 falls into the slag discharge tank 25 and is discharged through the slag discharge pipe 26 and the valve 27.

[0025] During operation, piston 5 in hopper 2 drives moving plate 6 to control the movement of rutile in hopper 2 into mixing tank 3 at a certain speed. Simultaneously, sodium chloride, after being calculated and weighed, is placed into metering tank 4. Motor 8 controls rotating rod 10 and rotating plate 11 to rotate at the bottom of metering tank 4. The rotating plate 11 and the circular grooves at the bottom of metering tank 4 intersect, controlling the size of the through-holes to allow sodium chloride to be added into mixing tank 3 at a certain speed. It is then mixed by stirring rod 13 and falls into conveyor box 14. An external motor drives conveying stirring plate 15 in conveyor box 14 to rotate, transporting rutile and sodium chloride while mixing them more evenly. The evenly mixed rutile falls into collection frame 16 and is simultaneously transported by bucket elevator 17. The material is fed into the feed hopper 18 and then enters the fluidized bed furnace 1. In the fluidized bed furnace 1, Al2O3 reacts with Cl2 in the rutile to generate AlCl3. The temperature in the fluidized bed furnace 1 is around 1000℃. At this temperature, AlCl3 reacts with NaCl to generate NaAlCl4. Subsequently, it enters the cyclone separator 23 through the cooling cabinet 19. The nozzle 22 sprays out external low-temperature inert gas to cool the mixture to ≤185℃. The cyclone separator 23 separates the solid NaAlCl4 from the mixture to obtain solid NaAlCl4 and titanium tetrachloride gas. The titanium tetrachloride gas is treated as waste gas through the outlet pipe 24. The solid NaAlCl4 falls into the slag discharge tank 25 and is discharged through the slag discharge pipe 26 and valve 27.

[0026] Through the above steps, the piston 5 in the silo 2 drives the moving plate 6 to move and control the rutile in the silo 2 to enter the mixing tank 3 at a certain speed. At the same time, the sodium chloride, after calculation and weighing, is put into the metering tank 4. The motor 8 controls the rotating rod 10 and the rotating plate 11 to rotate and put the sodium chloride into the mixing tank 3 at an appropriate speed. It is mixed by the stirring rod 13 and then falls into the conveying box 14. The conveying stirring plate 15 in the conveying box 14 rotates to transport the rutile and sodium chloride and mix them more evenly. This solves the problem that when sodium chloride is not mixed evenly with rutile or high titanium slag, it will lead to a significant reduction in aluminum removal efficiency. In some areas during the reaction process, there may be a lack of sufficient sodium chloride to effectively fix aluminum.

Claims

1. A device for removing aluminum from titanium tetrachloride by adding sodium chloride in a boiling chlorination furnace, comprising a boiling furnace (1); characterized in that: Also include the metering tank (4), the left end of the fluidized bed furnace (1) is provided with bunker (2), the rear end of bunker (2) is fixedly connected with mixing tank (3) at lower position, the top of mixing tank (3) is fixedly connected with metering tank (4), the top of metering tank (4) is movably connected with barrel cover (7), the inside of bunker (2) is fixedly connected with piston (5) at rear position, the lower end of piston (5) is fixedly connected with moving plate (6), moving plate (6) is slidably connected with bunker (2), the inside of metering tank (4) is fixedly connected with fixed plate (9), the top of fixed plate (9) is fixedly connected with motor one (8), the output end of motor one (8) is fixedly connected with rotating rod (10) through fixed plate (9), the bottom of rotating rod (10) is fixedly connected with rotating plate (11), the bottom of rotating plate (11) and the bottom of metering tank (4) are both provided with two circular grooves, the top of mixing tank (3) is fixedly connected with motor two (12), the bottom of motor two (12) is fixedly connected with stirring rod (13), stirring rod (13) is rotatably connected with mixing tank (3), the bottom of mixing tank (3) is fixedly connected with conveying box (14), the inside of conveying box (14) is rotatably connected with three conveying stirring plates (15).

2. The titanium tetrachloride de-aluminuming apparatus with sodium chloride addition in the fluidized chlorination furnace according to claim 1, characterized in that: The bottom of conveying box (14) is provided with collecting frame (16), the top of collecting frame (16) is provided with bucket elevator (17), the bottom of bucket elevator (17) is provided with feeding hopper (18).

3. The titanium tetrachloride de-aluminumizing unit with sodium chloride addition inside the fluidized chlorination furnace according to claim 2, characterized in that: Feeding hopper (18) is fixedly connected with fluidized bed furnace (1), the right end of fluidized bed furnace (1) is connected with cooling cabinet (19) at upper position.

4. The titanium tetrachloride de-aluminuming apparatus with sodium chloride addition inside the fluidized chlorination furnace according to claim 3, characterized in that: The inside of cooling cabinet (19) is fixedly connected with gas collecting box (20) at upper side, the top of gas collecting box (20) is fixedly connected with gas inlet pipe (21) through cooling cabinet (19).

5. The apparatus for removing aluminum from titanium tetrachloride by adding sodium chloride into the boiling chlorination furnace according to claim 4, characterized in that: The bottom of gas collecting box (20) is fixedly connected with three spray heads (22), the right end of cooling cabinet (19) is fixedly connected with cyclone separator (23).

6. The titanium tetrachloride de-aluminuming apparatus with sodium chloride addition inside the boiling chlorination furnace according to claim 5, characterized in that: The top of cyclone separator (23) is fixedly connected with gas outlet pipe (24), the bottom of cyclone separator (23) is fixedly connected with deslagging tank (25).

7. The titanium tetrachloride de-aluminuming apparatus with sodium chloride addition inside the fluidized chlorination furnace according to claim 6, characterized in that: The bottom of deslagging tank (25) is fixedly connected with deslagging pipe (26), the inside of deslagging pipe (26) is provided with valve (27).

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