CN215586438U - Aluminum trichloride preparation facilities - Google Patents
Aluminum trichloride preparation facilities Download PDFInfo
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- CN215586438U CN215586438U CN202121906327.7U CN202121906327U CN215586438U CN 215586438 U CN215586438 U CN 215586438U CN 202121906327 U CN202121906327 U CN 202121906327U CN 215586438 U CN215586438 U CN 215586438U
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- quartz sand
- aluminum
- aluminum trichloride
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Abstract
The utility model relates to the technical field of titanium dioxide production devices by a chlorination method, and discloses an aluminum trichloride preparation device which comprises a cylinder, an upper end enclosure and a lower end enclosure; the upper end surface of the upper end enclosure is communicated with a quartz sand inlet and an aluminum particle inlet; a distribution cone is fixedly arranged in the cylinder body; the opening of the distribution cone is upward, and air distribution holes are uniformly distributed on the conical surface of the distribution cone; the upper part of the distribution cone is provided with a conical filter screen attached to the distribution cone; the aluminum trichloride preparation device also comprises a spiral blanking assembly; the spiral blanking assembly comprises a driving motor, a rotating shaft and spiral blades. The utility model has simple structure and convenient operation; the reaction rate of the aluminum particles and the chlorine is improved by rubbing the surfaces of the aluminum particles with quartz sand; the spiral blanking assembly controls the blanking speed of the aluminum particles, prolongs the blanking time of the aluminum particles and enables the aluminum particles to be in contact with chlorine more fully.
Description
Technical Field
The utility model relates to the technical field of titanium dioxide production devices by a chlorination method, in particular to an aluminum trichloride preparation device.
Background
In the production process of titanium dioxide by a chlorination method, the most core technology is the gas phase oxidation of refined titanium tetrachloride, aluminum trichloride is added into titanium tetrachloride airflow before the refined titanium tetrachloride reacts with high-temperature oxygen, and then small-particle alumina is formed and used as a crystal nucleus for oxidizing titanium tetrachloride into titanium dioxide. Aluminum trichloride is used as a rutile crystal transformation agent, and the use of the aluminum trichloride has important influence on the particle size of a base material and the optical performance of a final product. In the production process of titanium dioxide by a chlorination method, aluminum trichloride is prepared by an aluminum trichloride reactor, heated titanium tetrachloride gas and chlorine gas enter from a feed inlet of the aluminum trichloride reactor, the chlorine gas reacts with an aluminum simple substance in the reactor to generate aluminum trichloride gas, and the aluminum trichloride gas and the titanium tetrachloride gas are discharged from a discharge outlet of the reactor to carry out the next procedure.
In the aluminum trichloride reactor in the prior art, the reaction effect of the simple aluminum substance and the chlorine gas is poor, the simple aluminum substance and the chlorine gas are not uniformly mixed, complete and full reaction cannot be realized, the generated aluminum trichloride cannot meet the production process requirement, and the quality index of a titanium white product cannot reach the optimum.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the technical problems in the prior art and provides an aluminum trichloride preparation device.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
a device for preparing aluminum trichloride comprises a cylinder, an upper end enclosure and a lower end enclosure, wherein the cylinder, the upper end enclosure and the lower end enclosure form a closed tank body; a feed inlet is arranged on the left side of the lower part of the cylinder body, and a discharge outlet is arranged on the right side of the upper part of the cylinder body; the upper end surface of the upper end enclosure is communicated with a quartz sand inlet and an aluminum particle inlet; the quartz sand inlet is used for discharging quartz sand, and the aluminum particle inlet is used for discharging aluminum particles;
a distribution cone is fixedly arranged in the cylinder body; the opening of the distribution cone is upward, and air distribution holes are uniformly distributed on the conical surface of the distribution cone; the upper part of the distribution cone is provided with a conical filter screen attached to the distribution cone; a quartz sand layer formed by quartz sand is filled above the conical filter screen; the mounting position of the feed inlet is lower than that of the distribution cone; the left side and the right side of the cylinder body at the lower part of the quartz sand layer are respectively and symmetrically provided with a pressure measuring port A and a pressure measuring port B.
Preferably, the particle size of the aluminum particles is larger than that of the quartz sand; the grain diameter of the aluminum particles is 5-8mm, and the sphericity is not less than 0.7; the particle size of the quartz sand is 0.9-1.5mm, and the sphericity is not less than 0.85.
Preferably, the distance between the upper end face of the quartz sand layer and the upper end face of the cylinder is less than or equal to one-half of the cylinder length and more than or equal to one-third of the cylinder length.
Preferably, the air distribution hole is funnel-shaped; the aperture of the upper end surface of the air distribution hole is larger than that of the lower end surface of the air distribution hole.
Preferably, the diameter of the filter holes of the conical filter screen is smaller than the grain diameter of the quartz sand.
Preferably, the aluminum trichloride preparation device further comprises a spiral blanking assembly; the spiral blanking assembly comprises a driving motor, a rotating shaft and a spiral blade; the spiral blanking assembly is arranged above the quartz sand layer; the rotating shaft penetrates through the center of the upper end enclosure, and the driving motor drives the rotating shaft to rotate; the helical blade is fixed on the rotating shaft;
the quartz sand inlet and the aluminum particle inlet are distributed on two sides of the rotating shaft in a bilateral symmetry manner; the projections of the quartz sand inlet and the aluminum particle inlet fall on the spiral blade.
Preferably, the helical blades are uniformly provided with air holes; the inner diameter of the air holes is smaller than the grain diameter of the quartz sand.
Preferably, a discharging hopper fixedly connected with the rotating shaft is further arranged above the spiral blade; the discharging hopper is conical, and the opening of the discharging hopper is upward; the projections of the quartz sand inlet and the aluminum particle inlet fall into the blanking hopper; a discharging pipe is vertically arranged on the conical surface of the discharging hopper, and the discharging pipe is positioned at the lower part of the discharging hopper and is close to the rotating shaft; the blanking pipe points to the helical blade.
The utility model has the following function principle:
when the quartz sand layer is used, nitrogen is firstly introduced into the feeding hole, so that the quartz sand in the quartz sand layer is in a fluidized state; and then introducing high-temperature titanium tetrachloride from the feed inlet to heat the interior of the barrel, introducing chlorine from the feed inlet after the temperature rise is finished, and adding aluminum particles into the barrel from the aluminum particle inlet, wherein the aluminum particles react with the chlorine to generate aluminum trichloride, and the aluminum trichloride and the titanium tetrachloride are discharged from the discharge outlet.
The quartz sand layer in a fluidized state is similar to a fluidized bed, the quartz sand and the aluminum particles in the quartz sand layer are mutually rubbed, and the distribution of chlorine is more uniform by combining the use of a distribution cone; and the quartz sand can also play the role of uniform heat and mixed gas, and the reaction of the aluminum particles and the chlorine is more sufficient in the environment with uniform heat and uniform mixed gas. And the reaction rate of the aluminum particles and the chlorine can be improved by rubbing the surfaces of the aluminum particles with quartz sand. Wherein the grain diameter of the aluminum grains is larger than that of the quartz sand.
The structure of the air distribution holes enables air exhausted from the upper end faces of the air distribution holes to be in contact with the quartz sand layer more fully. A driving motor in the spiral blanking assembly adopts a forward and reverse rotating motor, so that the rotating direction and the rotating speed of the rotating shaft can be controlled, and the blanking speed of aluminum particles is indirectly controlled; when the rotation direction of the rotating shaft is opposite to the spiral direction of the spiral blade, the blanking time of the aluminum particles can be prolonged, the aluminum particles are fully contacted with chlorine on the spiral blade, the contact time is prolonged, and the reaction is more fully performed. The helical blade also plays a role of distributing materials, and prevents aluminum particles from falling on the same position.
The hopper makes the aluminium grain all fall on helical blade's same position down, again along helical blade unloading, prevents that the aluminium grain from splashing when helical blade rotates.
The components which are not limited in the present invention all adopt the conventional means in the art, for example, the cylinder, the upper head, the lower head, the conical filter screen, the driving motor and the like are all selected from the ones commonly used in the art, and a person skilled in the art can select the model and the installation mode thereof according to the actual use requirement, and clearly understand how to install and control the components, and the detailed description is not provided herein.
The utility model has the beneficial effects that:
the utility model has simple structure and convenient operation; the reaction rate of the aluminum particles and the chlorine is improved by rubbing the surfaces of the aluminum particles with quartz sand; the spiral blanking assembly controls the blanking speed of the aluminum particles, prolongs the blanking time of the aluminum particles and enables the aluminum particles to be in contact with chlorine more fully.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is an enlarged view at E in FIG. 1;
FIG. 3 is a schematic structural view of example 2 of the present invention;
fig. 4 is a schematic structural view of the spiral blanking assembly in fig. 3.
In the figure: 1. a barrel; 2. an upper end enclosure; 3. a lower end enclosure; 4. a feed inlet; 5. a discharge port; 6. a quartz sand inlet; 7. an aluminum particle inlet; 8. a distribution cone; 9. distributing air holes; 10. a conical filter screen; 11. a quartz sand layer; 12. a pressure measuring port A; 13. a pressure measuring port B; 14. a drive motor; 15. a rotating shaft; 16. a helical blade; 17. air holes are formed; 18. feeding a hopper; 19. and (5) discharging the material pipe.
Detailed Description
The utility model will be further described with reference to the drawings and specific embodiments, which are illustrative of the utility model and are not to be construed as limiting the utility model.
Example 1
As shown in fig. 1 to 2, the aluminum trichloride preparation device comprises a cylinder 1, an upper end enclosure 2 and a lower end enclosure 3, wherein the cylinder 1, the upper end enclosure 2 and the lower end enclosure 3 form a closed tank; a feed inlet 4 is arranged on the left side of the lower part of the barrel body 1, and a discharge outlet 5 is arranged on the right side of the upper part of the barrel body 1; the upper end surface of the upper end enclosure 2 is communicated with a quartz sand inlet 6 and an aluminum particle inlet 7. The quartz sand inlet 6 is used for discharging quartz sand, and the aluminum particle inlet 7 is used for discharging aluminum particles;
a distribution cone 8 is fixedly arranged in the cylinder 1; the opening of the distribution cone 8 is upward, and air distribution holes 9 are uniformly distributed on the conical surface of the distribution cone 8; the upper part of the distribution cone 8 is provided with a conical filter screen 10 attached to the distribution cone 8; a quartz sand layer 11 formed by quartz sand is filled above the conical filter screen 10; the mounting position of the feed inlet 4 is lower than that of the distribution cone 8; pressure measuring ports A12 and B13 are symmetrically arranged on the left side and the right side of the cylinder at the lower part of the quartz sand layer 11.
The grain diameter of the aluminum grains is larger than that of the quartz sand; the grain diameter of the aluminum particles is 5-8mm, and the sphericity is not less than 0.7; the particle size of the quartz sand is 0.9-1.5mm, and the sphericity is not less than 0.85.
The distance between the upper end surface of the quartz sand layer 11 and the upper end surface of the cylinder 1 is equal to half of the cylinder length.
The air distribution holes 9 are funnel-shaped; the aperture of the upper end surface of the air distribution hole is larger than that of the lower end surface of the air distribution hole.
The diameter of the filtering hole of the conical filtering net 10 is smaller than the grain diameter of the quartz sand.
Example 2
As shown in fig. 3 to 4, in addition to the structure described in embodiment 1, the aluminum trichloride production apparatus of the present embodiment further includes a spiral blanking assembly; the spiral blanking assembly comprises a driving motor 14, a rotating shaft 15 and a spiral blade 16; the spiral blanking assembly is arranged above the quartz sand layer 11; the rotating shaft 15 penetrates through the center of the upper end enclosure 2, and the driving motor 14 drives the rotating shaft 15 to rotate; the helical blade 16 is fixed on the rotating shaft 15;
the quartz sand inlet 6 and the aluminum particle inlet 7 are distributed on two sides of the rotating shaft 15 in a bilateral symmetry manner; the projections of the quartz sand inlet 6 and the aluminum particle inlet 7 fall on the helical blade 16.
Air holes 17 are uniformly distributed on the spiral blade 16; the inner diameter of the air holes 17 is smaller than the grain diameter of the quartz sand.
A discharging hopper 18 fixedly connected with the rotating shaft 15 is also arranged above the helical blade 16; the lower hopper 18 is conical and has an upward opening; the projections of the quartz sand inlet 6 and the aluminum particle inlet 7 fall into the blanking hopper 18; a blanking pipe 19 is vertically arranged on the conical surface of the blanking hopper 18, and the blanking pipe 19 is positioned at the lower part of the blanking hopper 18 and is close to the rotating shaft 15; the discharge pipe 19 is directed towards the helical blade 16.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A device for preparing aluminum trichloride comprises a cylinder, an upper end enclosure and a lower end enclosure, wherein the cylinder, the upper end enclosure and the lower end enclosure form a closed tank body; a feed inlet is arranged on the left side of the lower part of the cylinder body, and a discharge outlet is arranged on the right side of the upper part of the cylinder body; the method is characterized in that: the upper end surface of the upper end enclosure is communicated with a quartz sand inlet and an aluminum particle inlet;
a distribution cone is fixedly arranged in the cylinder body; the opening of the distribution cone is upward, and air distribution holes are uniformly distributed on the conical surface of the distribution cone; the upper part of the distribution cone is provided with a conical filter screen attached to the distribution cone; a quartz sand layer formed by quartz sand is filled above the conical filter screen; the mounting position of the feed inlet is lower than that of the distribution cone; the left side and the right side of the cylinder body at the lower part of the quartz sand layer are respectively and symmetrically provided with a pressure measuring port A and a pressure measuring port B.
2. The aluminum trichloride preparation apparatus according to claim 1, characterized in that: the particle size of the quartz sand is 0.9-1.5mm, and the sphericity is not less than 0.85.
3. The aluminum trichloride production apparatus according to claim 2, characterized in that: the distance between the upper end face of the quartz sand layer and the upper end face of the cylinder is less than or equal to one-half of the cylinder length and more than or equal to one-third of the cylinder length.
4. The aluminum trichloride preparation apparatus according to claim 3, characterized in that: the air distribution hole is funnel-shaped; the aperture of the upper end surface of the air distribution hole is larger than that of the lower end surface of the air distribution hole.
5. The aluminum trichloride preparation apparatus according to claim 4, wherein: the diameter of the filtering hole of the conical filter screen is smaller than the grain diameter of the quartz sand.
6. The aluminum trichloride preparation apparatus according to claim 5, wherein: the aluminum trichloride preparation device also comprises a spiral blanking assembly; the spiral blanking assembly comprises a driving motor, a rotating shaft and a spiral blade; the spiral blanking assembly is arranged above the quartz sand layer; the rotating shaft penetrates through the center of the upper end enclosure, and the driving motor drives the rotating shaft to rotate; the helical blade is fixed on the rotating shaft;
the quartz sand inlet and the aluminum particle inlet are distributed on two sides of the rotating shaft in a bilateral symmetry manner; the projections of the quartz sand inlet and the aluminum particle inlet fall on the spiral blade.
7. The aluminum trichloride preparation apparatus according to claim 6, wherein: air holes are uniformly distributed on the spiral blade; the inner diameter of the air holes is smaller than the grain diameter of the quartz sand.
8. The aluminum trichloride preparation apparatus according to claim 7, wherein: a discharging hopper fixedly connected with the rotating shaft is also arranged above the helical blade; the discharging hopper is conical, and the opening of the discharging hopper is upward; the projections of the quartz sand inlet and the aluminum particle inlet fall into the blanking hopper; a discharging pipe is vertically arranged on the conical surface of the discharging hopper, and the discharging pipe is positioned at the lower part of the discharging hopper and is close to the rotating shaft; the blanking pipe points to the helical blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121906327.7U CN215586438U (en) | 2021-08-13 | 2021-08-13 | Aluminum trichloride preparation facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121906327.7U CN215586438U (en) | 2021-08-13 | 2021-08-13 | Aluminum trichloride preparation facilities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215586438U true CN215586438U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121906327.7U Active CN215586438U (en) | 2021-08-13 | 2021-08-13 | Aluminum trichloride preparation facilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215586438U (en) |
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2021
- 2021-08-13 CN CN202121906327.7U patent/CN215586438U/en active Active
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