CN211770340U - High-purity titanium tetrachloride preparation system - Google Patents
High-purity titanium tetrachloride preparation system Download PDFInfo
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- CN211770340U CN211770340U CN201922206634.3U CN201922206634U CN211770340U CN 211770340 U CN211770340 U CN 211770340U CN 201922206634 U CN201922206634 U CN 201922206634U CN 211770340 U CN211770340 U CN 211770340U
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Abstract
The utility model discloses a high-purity titanium tetrachloride preparation system in titanium tetrachloride refining technical field, include filter, one-level rectifying column and second grade rectifying column that communicate in proper order by the pipeline, the bottom of one-level rectifying column is equipped with and is equipped with the one-level stills matched with one-level rectifying column, top and is equipped with the one-level condenser with one-level rectifying column matched with, the bottom of second grade rectifying column is equipped with and is equipped with the second grade stills matched with second grade rectifying column, top and is equipped with the second grade condenser with second grade rectifying column matched with, the liquid phase export of second grade condenser passes through the backward flow mouth that backflow pipeline and one-level rectifying column, second grade rectifying column top link to each other. The utility model discloses a take off heavy refining process after light earlier to through the condensate backward flow that will take off in the heavy process to taking off in the light process, replace the mass transfer heat transfer process in the condensate completion of taking off in the light process, reduced the content of low boiling impurity, improved titanium tetrachloride's precision.
Description
Technical Field
The utility model relates to a titanium tetrachloride refining technology field, concretely relates to high-purity titanium tetrachloride preparation system.
Background
Titanium tetrachloride is an important intermediate for producing metal titanium and compounds thereof, is a main raw material for preparing titanium sponge and titanium dioxide by a chlorination process, and the quality of the titanium tetrachloride directly influences the quality of the titanium sponge and the titanium dioxide. Titanium tetrachloride impurities are complex and comprise low-boiling-point substances, high-boiling-point substances and impurities with similar boiling points, mainly SiCl4, CH2ClCOCl, POCL3, CHCl2COCl, CCl3COCl, CH3COCl, SnCl4, VOCl3, AsCl3, VCl4, AlCl3, FeCl3 and the like, and the types and the amounts of the impurities directly influence the color of the titanium tetrachloride and greatly harm the performance of subsequent products.
At present, two mutually connected rectifying towers are generally adopted to rectify and purify titanium tetrachloride, the operation mode of the two rectifying towers is generally that light is removed firstly and then heavy is removed, a tower top condenser is arranged at the tower top of each rectifying tower and is used for condensing steam discharged from the tower top to generate condensate, one part of the condensate flows back into the original rectifying tower and contacts with the steam moving upwards in the rectifying tower on a mass and heat transfer element, so that the mass and heat transfer process is completed, and the other part is extracted.
However, in the actual process, when the light component removal operation is performed, since the low-boiling impurities are mainly contained in the steam discharged from the top of the rectifying tower, if the condensate of the part of the steam flows back into the rectifying tower, the cyclic distillation of the low-boiling impurities in the rectifying tower is caused, which not only affects the precision of the titanium tetrachloride, but also wastes a large amount of energy; if the reflux amount of the condensed liquid at the tower top is reduced or even no reflux occurs, the temperature at the tower top cannot be ensured, and further, the content of titanium tetrachloride in the steam discharged from the tower top is increased, and the yield of high-purity titanium tetrachloride is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a high purity titanium tetrachloride preparation system to solve the above technical problems.
The utility model discloses the technical scheme who adopts does:
the design is a high-purity titanium tetrachloride preparation system, which comprises a filter, a first-stage rectifying tower and a second-stage rectifying tower which are sequentially communicated by pipelines, wherein the bottom of the first-stage rectifying tower is provided with a first-stage distillation kettle matched with the first-stage rectifying tower, and the top of the first-stage rectifying tower is provided with a first-stage condenser matched with the first-stage rectifying tower, the bottom of the second-stage rectifying tower is provided with a second-stage distillation kettle matched with the second-stage rectifying tower, and the top of the second-stage rectifying tower is provided with a second-stage condenser matched with the second-stage rectifying tower, and the liquid phase outlet of the second-stage condenser is connected with the reflux port.
Preferably, the filter is a microporous filter.
Preferably, the first-stage condenser and the second-stage condenser respectively comprise a shell, baffle plates and a snake-shaped coil pipe, the baffle plates are arranged in the shell in a staggered mode, the inner cavity of the shell is made to be snake-shaped, and the snake-shaped coil pipe is arranged on the shell in the horizontal direction.
Compared with the prior art, the utility model has the advantages that:
the utility model discloses a take off heavy refining process after light earlier to through the condensate backward flow that will take off in the heavy process to taking off in the light process, replace the mass transfer heat transfer process in the condensate completion of taking off in the light process, reduced the content of low boiling impurity, improved titanium tetrachloride's precision.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a condenser;
the device comprises a primary rectifying tower 1, a secondary rectifying tower 2, a primary distillation still 3, a primary condenser 4, a secondary distillation still 5, a secondary condenser 6, a filter 7, a reflux pipeline 8, a titanium tetrachloride storage tank 9, a shell 10, a baffle plate 11 and a snake-shaped coil 12.
Detailed Description
The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.
Example (b): as shown in figure 1, a high-purity titanium tetrachloride preparation system is designed, which comprises a filter 7, a primary rectifying tower 1 and a secondary rectifying tower 2 which are sequentially communicated by pipelines, wherein a primary distillation kettle 3 matched with the primary rectifying tower 1 is arranged at the bottom of the primary rectifying tower 1, a primary condenser 4 matched with the primary rectifying tower 1 is arranged at the top of the primary rectifying tower 1, titanium tetrachloride liquid at the bottom of the primary rectifying tower 1 is heated to 140-150 ℃ through the primary distillation kettle 3, steam discharged from the top of the primary rectifying tower 1 is condensed into condensate of 40 ℃ through the primary condenser 4, and the condensate is sent back to a chlorination process for reuse; the tower bottom of the second-stage rectifying tower 2 is provided with a second-stage distillation kettle 5 matched with the second-stage rectifying tower 2, the tower top of the second-stage rectifying tower 2 is provided with a second-stage condenser 6 matched with the second-stage rectifying tower 2, the liquid phase outlet of the second-stage condenser 6 is connected with the reflux ports at the top of the first-stage rectifying tower 1 and the second-stage rectifying tower 2 through a reflux pipeline 8, heating the titanium tetrachloride liquid at the bottom of the secondary rectifying tower 2 to 160-170 ℃ through a secondary distillation kettle 5, condensing the steam discharged from the top of the secondary rectifying tower 2 into condensate of 40 ℃ by a secondary condenser 6, one part of the partial condensate flows back to the top of the first-stage rectifying tower 1 and the second-stage rectifying tower 2 through a reflux pipeline 8, the temperature of the top of the primary rectifying tower 1 is controlled to be 120-130 ℃ through the mass and heat transfer process of the reflux liquid and the steam in the tower, the temperature of the top of the secondary rectifying tower 2 is controlled to be 137 ℃, and the rest condensate is led into a titanium tetrachloride storage tank 9 to be extracted.
Further, the filter 7 is a microporous filter for removing solid impurities from the titanium tetrachloride liquid.
Further, in order to improve the condensation effect of the steam, as shown in fig. 2, the first-stage condenser 4 and the second-stage condenser 6 both include a casing 10, baffle plates 11 and a serpentine coil 12, the baffle plates 11 are alternately arranged in the casing 10, and an inner cavity of the casing 10 is serpentine, the serpentine coil 12 is arranged in the casing 10 along a horizontal direction, two ends of the serpentine coil 12 penetrate through a bottom wall of the casing 10 to extend out, one end of the casing 10 is provided with a coolant inlet 13, the other end of the casing 10 is provided with a coolant outlet 14, and meanwhile, the flowing direction of the coolant in the casing 10 is opposite to the flowing direction of the steam in the serpentine coil 12.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. The utility model provides a high-purity titanium tetrachloride preparation system, includes filter, one-level rectifying column and second grade rectifying column that communicate in proper order by the pipeline, the bottom of one-level rectifying column is equipped with the one-level stills that matches with one-level rectifying column, top be equipped with one-level rectifying column matched with one-level condenser, the bottom of second grade rectifying column is equipped with the second grade stills that matches with second grade rectifying column, top be equipped with second grade rectifying column matched with second grade condenser, its characterized in that: and a liquid phase outlet of the secondary condenser is connected with reflux ports at the tops of the primary rectifying tower and the secondary rectifying tower through reflux pipelines.
2. The system for preparing high purity titanium tetrachloride according to claim 1, wherein: the filter is a microporous filter.
3. The system for preparing high purity titanium tetrachloride according to claim 1, wherein: the first-stage condenser and the second-stage condenser respectively comprise a shell, baffle plates and a snake-shaped coil pipe, the baffle plates are arranged in the shell in a staggered mode, the inner cavity of the shell is made to be snake-shaped, and the snake-shaped coil pipe is arranged on the shell in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922206634.3U CN211770340U (en) | 2019-12-11 | 2019-12-11 | High-purity titanium tetrachloride preparation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922206634.3U CN211770340U (en) | 2019-12-11 | 2019-12-11 | High-purity titanium tetrachloride preparation system |
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| CN211770340U true CN211770340U (en) | 2020-10-27 |
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| CN201922206634.3U Active CN211770340U (en) | 2019-12-11 | 2019-12-11 | High-purity titanium tetrachloride preparation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113912108A (en) * | 2021-11-30 | 2022-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Method and device for deeply removing impurities in refining of titanium tetrachloride with high vanadium content |
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2019
- 2019-12-11 CN CN201922206634.3U patent/CN211770340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113912108A (en) * | 2021-11-30 | 2022-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Method and device for deeply removing impurities in refining of titanium tetrachloride with high vanadium content |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of high-purity titanium tetrachloride preparation system Effective date of registration: 20220906 Granted publication date: 20201027 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN LONGXING TITANIUM INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2022980014572 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230829 Granted publication date: 20201027 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN LONGXING TITANIUM INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2022980014572 |