CN213802941U - Titanium tetrachloride purification system - Google Patents
Titanium tetrachloride purification system Download PDFInfo
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- CN213802941U CN213802941U CN202021849841.7U CN202021849841U CN213802941U CN 213802941 U CN213802941 U CN 213802941U CN 202021849841 U CN202021849841 U CN 202021849841U CN 213802941 U CN213802941 U CN 213802941U
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Abstract
The utility model discloses a titanium tetrachloride purification system, which comprises an adsorption tank and an adsorption separator; the adsorption tank is provided with a feed inlet, a discharge port of the adsorption tank is communicated with an inlet of an adsorption pump, and an outlet of the adsorption pump is respectively communicated with the feed inlet of the adsorption tank and the feed inlet of the adsorption separator; the adsorption separator is provided with a purified liquid outlet and a slurry outlet. The utility model discloses a clean system simple structure, purification efficiency and separation accuracy height to thick titanium tetrachloride or titanium tetrachloride mud. The speed of separating the solid suspended substance in the coarse titanium tetrachloride is 2 to 5 times higher than that of direct precise filtration. Through the utility model discloses the mud solid content of separating is higher than the mud solid content of conventional sedimentation separation gained 2-3 times, and the temperature fluctuation that the mud liquid content is low to cause when returning chlorination furnace is lower, and then makes chlorination reaction's operation more steady.
Description
Technical Field
The utility model relates to a clean system, concretely relates to titanium tetrachloride clean system.
Background
Titanium tetrachloride is the most important intermediate raw material in titanium industries such as titanium dioxide, titanium sponge and the like. At present, the industrial preparation process of titanium tetrachloride mainly comprises boiling chlorination and molten salt chlorination, and the process mainly comprises the chlorination reaction of high titanium slag, chlorine and petroleum coke in a chlorination furnace according to a certain proportion at high temperature to obtain the titanium tetrachloride.
In chlorination furnaceIn the production process, because impurity elements in titanium slag or titanium-containing minerals are simultaneously chlorinated, the crude titanium tetrachloride contains various metal chlorides, carbon powder and other impurities, and if the impurities in the crude titanium tetrachloride cannot be well removed, the quality of a final product is greatly influenced; for titanium slag raw material with high calcium and magnesium impurity content in Panxi area of China, crude titanium tetrachloride is prepared by adopting a molten salt chlorination method, and AlCl is removed through complicated procedures of settling, impurity removal, filtering, refining, impurity removal and the like3、FeCl3、SiCl4、VOCl3And the impurities are mixed to obtain qualified fine titanium tetrachloride for producing sponge titanium and titanium white chloride.
At present, an effective impurity removal technology for crude titanium tetrachloride is lacked at home and abroad. The Chinese invention patent CN106237671B discloses a crude titanium tetrachloride settling device, which comprises a thickener, a spiral material extractor, a mud tank, a standing settling tank, a metering tank and the like, wherein the adopted method is mechanical settling; chinese patent CN102992393A discloses a centrifugal filter comprising a cover, a housing, a rotating hub, a rotating device, a bottom plate, a cover opening device, etc., and the adopted method is centrifugal filtration. From the practical situation of industrial production, the mechanical sedimentation or natural sedimentation separation efficiency is low, a large number of sedimentation tanks and long sedimentation time are needed, the content of titanium tetrachloride in the separated mud is high, and the stability of production is influenced by large furnace temperature fluctuation caused by returning the mud to the furnace; centrifugal separation has the technical problems of poor sealing effect of equipment, quick abrasion and corrosion of the equipment, high operation and maintenance cost, serious environmental pollution and the like, and continuous feeding and discharging and large-scale industrial production are difficult to realize.
Disclosure of Invention
In order to solve the above problems existing in the prior art, the utility model discloses a titanium tetrachloride purification system, the technical scheme of the utility model is:
a titanium tetrachloride purification system comprises an adsorption tank and an adsorption separator; the adsorption tank is provided with a feed inlet, a discharge port of the adsorption tank is communicated with an inlet of an adsorption pump, and an outlet of the adsorption pump is respectively communicated with the feed inlet of the adsorption tank and the feed inlet of the adsorption separator; the adsorption separator is provided with a purified liquid outlet and a slurry outlet.
Optionally, the purification system further comprises an adsorbent tank and an adsorbent pump connected to the adsorbent tank, the adsorbent pump further connected to the adsorption tank.
Furthermore, the purification system further comprises a slag slurry tank, a feed inlet of the slag slurry tank is communicated with a slurry outlet of the adsorption separator, the slag slurry tank is further provided with a clear liquid outlet and a slag discharge port, and the clear liquid outlet is connected with the feed inlet of the adsorption separator through a clear liquid pump.
Furthermore, the purification system further comprises a slag separator and a slurry tank, a feed inlet of the slag separator is communicated with a slag discharge port of the slurry tank through a slag slurry pump, the slag separator is further provided with a second purified liquid outlet and a slag outlet, the slag outlet is communicated with the feed inlet of the slurry tank, and a discharge port of the slurry tank is communicated with the chlorination furnace through a slurry pump.
Preferably, the slag separator adopts a metal membrane separator with the separation precision of 0.5-3 μm or a ceramic membrane separator with the separation precision of 0.5-1 μm.
Preferably, the adsorption separator adopts a metal membrane separator with the separation precision of 0.5-3 μm or a ceramic membrane separator with the separation precision of 0.5-1 μm.
The utility model discloses a clean system's purification principle does: through the action of suspended impurities of small particles and part of high-boiling-point metal chlorides and the adsorbent in the adsorption tank, the small particles are fixed by the adsorbent and then separated by the adsorption separator, so that the problems that the suspended particles existing in direct filtration are fine, the material viscosity is high, the material is easy to block and the like are solved.
The utility model has the advantages that:
the utility model discloses a clean system simple structure, purification efficiency and separation accuracy height to thick titanium tetrachloride or titanium tetrachloride mud. The speed of separating the solid suspended substance in the coarse titanium tetrachloride is 2 to 5 times higher than that of direct precise filtration. Through the utility model discloses the mud solid content of separating is higher than the mud solid content of conventional sedimentation separation gained 2-3 times, and the temperature fluctuation that the mud liquid content is low to cause when returning chlorination furnace is lower, and then makes chlorination reaction's operation more steady.
Drawings
FIG. 1 is a schematic structural diagram of a titanium tetrachloride purification system of the present invention, wherein, 1-adsorption tank, 101-adsorbent tank, 102-adsorbent pump, 2-adsorption pump, 3-adsorption separator, 301-titanium tetrachloride outlet, 302-slurry outlet, 4-slurry tank, 401-supernatant outlet, 402-clear liquid pump, 403-slag discharge port, 5-slurry pump, 6-slag separator, 601-titanium tetrachloride outlet, 602-slag outlet, 7-slurry tank, 8-slurry pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in figure 1, the invention provides a titanium tetrachloride purification system, which comprises an adsorption tank 1, an adsorption separator 3, a slag slurry tank 4, a slag separator 6 and a slurry tank 7. The top of the adsorption tank 1 is provided with an adsorption tank feed inlet for receiving crude titanium tetrachloride or titanium tetrachloride slurry containing impurities sent from the outside. The bottom of the adsorption tank 1 is also connected with an adsorption pump 2, the outlet of the adsorption pump 2 is divided into two paths, one path returns the slurry after adsorption treatment to the adsorption tank 1, the other path of slurry goes to the adsorption separator 3, and the slurry returning to the adsorption tank accounts for 15% -75%. The adsorption tank 1 is also connected to an adsorbent tank 101 and an adsorbent pump 102 for supplying an adsorbent to the adsorption tank 1, the adsorbent tank 101 storing an adsorbent for adsorbing impurities in the crude titanium tetrachloride, and the adsorbent pump 102 connecting the adsorbent tank 101 and the adsorption tank 1 for adding the adsorbent to the adsorption tank 1. The adsorption separator 3 separates the crude titanium tetrachloride sent from the adsorption pump 2 into titanium tetrachloride free of solid impurities and slurry rich in impurities, and the adsorption separator 3 is provided with a titanium tetrachloride purified liquid outlet 301 and a slurry outlet 302.
The slurry outlet 302 of the adsorption separator 3 is connected with the slurry tank 4, the slurry tank 4 is at least provided with two outlets, one of the outlets is a supernatant outlet 401 which is positioned at the middle upper part of the slurry tank 4, the supernatant outlet 401 is also connected with a clear liquid pump 402, and the clear liquid pump 402 is also connected with the feed inlet of the adsorption separator 3. The other outlet of the slurry tank 4 is a slag discharge port 403 which is positioned at the bottom of the slurry tank 4, the slag discharge port 403 is also connected to the inlet of a slurry pump 5, the outlet of the slurry pump 5 is connected to a slag separator 6, the slag separator 6 has at least two outlets, one of the outlets is a titanium tetrachloride purified liquid second outlet 601, and the other outlet is a slag outlet 602. And a second titanium tetrachloride outlet purified liquid 601 of the slag separator 6 is combined with a first titanium tetrachloride purified liquid outlet 301 of the adsorption separator 3, and then the titanium tetrachloride purified liquid is sent out of the device.
The slag outlet 602 of the slag separator 6 is connected to a slurry tank 7, the slurry tank 7 is connected to a slurry pump 8, and the slurry pump 8 is connected to a chlorination furnace for returning the high-solid content slurry treated by the purification apparatus to the chlorination furnace, which will not be described in detail herein since the treatment of titanium tetrachloride slurry by the chlorination furnace is known in the art.
The adsorbent added into the adsorption tank 1 can be powder activated carbon with the grain size of 80 meshes to 100 meshes, the adsorption separator 3 and the slag separator 6 use metal films with asymmetric structures and the filtering precision of 3 mu m, the treatment effect is ideal, the speed for separating suspended solid in crude titanium tetrachloride is 2 to 5 times higher than that of direct precision filtration, the solid content of titanium tetrachloride after separation and purification is less than 20ppm, the solid content of separated mud is more than 28 percent, and is at least 2 times higher than that of mud obtained by conventional sedimentation separation, and the liquid content of the mud is low, the temperature fluctuation caused when the mud returns to a chlorination furnace is lower, so that the operation of chlorination reaction is more stable.
In addition, the adsorbent added into the adsorption tank 1 can also be powder activated carbon with the particle size of 200 meshes to 300 meshes, the adsorption separator 3 and the slag separator 6 use ceramic membranes with an asymmetric structure and the filtering precision of 1 mu m, the treatment effect is ideal, the speed for separating suspended solid in the crude titanium tetrachloride is 2 to 5 times higher than that of direct precision filtration, the solid content of the titanium tetrachloride after separation and purification is less than 5ppm, the solid content of the separated slurry is more than 30 percent, the solid content of the slurry is at least 2 times higher than that of the slurry obtained by conventional sedimentation separation, the liquid content of the slurry is low, the temperature fluctuation caused when the slurry returns to a chlorination furnace is lower, and the operation of chlorination reaction is more stable.
To sum up, adopt the utility model discloses a purification system simple structure, it is high to the purification efficiency and the separation precision of thick titanium tetrachloride or titanium tetrachloride mud. The speed of separating the solid suspended substance in the coarse titanium tetrachloride is 2 to 5 times higher than that of direct precise filtration. Through the utility model discloses the mud solid content of separating is higher than the mud solid content of conventional sedimentation separation gained 2-3 times, and the temperature fluctuation that the mud liquid content is low to cause when returning chlorination furnace is lower, and then makes chlorination reaction's operation more steady.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A titanium tetrachloride purification system is characterized by comprising an adsorption tank and an adsorption separator; the adsorption tank is provided with a feed inlet, a discharge port of the adsorption tank is communicated with an inlet of an adsorption pump, and an outlet of the adsorption pump is respectively communicated with the feed inlet of the adsorption tank and the feed inlet of the adsorption separator; the adsorption separator is provided with a purified liquid outlet and a slurry outlet.
2. The titanium tetrachloride purification system according to claim 1, wherein the purification system further comprises an adsorbent tank and an adsorbent pump connected to the adsorbent tank, the adsorbent pump further being connected to the adsorption tank.
3. The titanium tetrachloride purification system according to claim 2, wherein the purification system further comprises a slag slurry tank, a feed inlet of the slag slurry tank is communicated with a slurry outlet of the adsorption separator, the slag slurry tank is further provided with a clear liquid outlet and a slag discharge port, and the clear liquid outlet is connected with the feed inlet of the adsorption separator through a clear liquid pump.
4. The titanium tetrachloride purification system as claimed in claim 3, wherein the purification system further comprises a slag separator and a slurry tank, a feed inlet of the slag separator is communicated with a slag discharge port of the slurry tank through a slurry pump, the slag separator is further provided with a second purified liquid outlet and a slag outlet, the slag outlet is communicated with the feed inlet of the slurry tank, and a discharge port of the slurry tank is communicated with a chlorination furnace through a slurry pump.
5. The titanium tetrachloride purification system according to claim 4, wherein the slag separator is a metal film separator with a separation accuracy of 0.5 μm to 3 μm or a ceramic film separator with a separation accuracy of 0.5 μm to 1 μm.
6. The titanium tetrachloride purification system according to claim 5, wherein the adsorption separator is a metal membrane separator having a separation accuracy of 0.5 μm to 3 μm or a ceramic membrane separator having a separation accuracy of 0.5 μm to 1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849841.7U CN213802941U (en) | 2020-08-28 | 2020-08-28 | Titanium tetrachloride purification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849841.7U CN213802941U (en) | 2020-08-28 | 2020-08-28 | Titanium tetrachloride purification system |
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| CN213802941U true CN213802941U (en) | 2021-07-27 |
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| CN202021849841.7U Active CN213802941U (en) | 2020-08-28 | 2020-08-28 | Titanium tetrachloride purification system |
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