CN111533164B - Vanadium removal method for titanium tetrachloride in boiling chlorination system - Google Patents
Vanadium removal method for titanium tetrachloride in boiling chlorination system Download PDFInfo
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- CN111533164B CN111533164B CN202010004406.2A CN202010004406A CN111533164B CN 111533164 B CN111533164 B CN 111533164B CN 202010004406 A CN202010004406 A CN 202010004406A CN 111533164 B CN111533164 B CN 111533164B
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- C01G23/00—Compounds of titanium
- C01G23/02—Halides of titanium
- C01G23/022—Titanium tetrachloride
- C01G23/024—Purification of tetrachloride
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Abstract
The method comprises the steps of delivering carbon-containing slurry into a crude titanium tetrachloride processor from a carbon-containing slurry tank, mixing the carbon-containing slurry with crude titanium tetrachloride liquid to obtain mixed slurry, returning the mixed slurry into a quenching pipe, mixing the mixed slurry atomized by an atomization nozzle with titanium tetrachloride in a gas phase, reacting to generate vanadium oxychloride, enabling the vanadium oxychloride to enter a dust collector along with the titanium tetrachloride in the gas phase, collecting and treating the vanadium oxychloride by the dust collector, enabling the titanium tetrachloride in the gas phase in the dust collector to enter a titanium tetrachloride leaching tower from a gas outlet of the dust collector, leaching the obtained titanium tetrachloride liquid, delivering the titanium tetrachloride liquid into a titanium tetrachloride storage tank, settling the titanium tetrachloride liquid in the titanium tetrachloride storage tank, and supplying the obtained crude titanium tetrachloride liquid to the crude titanium tetrachloride processor. The advantages are that: the vanadium removal treatment is directly carried out in the boiling chlorination system, so that vanadium in titanium tetrachloride can be effectively removed, and stable and continuous production of the boiling chlorination system is ensured; and the carbonaceous slurry can be stably treated without additional steam heating or electric heating.
Description
Technical Field
The invention relates to a vanadium removal method for titanium tetrachloride in a boiling chlorination system.
Background
At present, large-scale boiling chlorination is carried out on industrial production in China, high titanium slag in production raw materials contains 0.1% -0.2% of vanadium impurities, vanadium oxychloride is generated in the boiling chlorination reaction process, and the difference of boiling points and relative volatilities of the titanium tetrachloride and the vanadium oxychloride is small, so that the titanium tetrachloride and the vanadium oxychloride are not suitable for separation by adopting a physical method rectification operation.
In industrial production, the titanium tetrachloride can be vanadium removed by using mineral oil, such as the process and system for purifying titanium tetrachloride disclosed in CN 103011269A. In the process of removing vanadium from mineral oil, the generated coarse titanium tetrachloride slurry containing vanadium oxychloride needs to be recovered, and the coarse titanium tetrachloride slurry containing vanadium oxychloride is partially carbonized in the vanadium removal tower, so that the coarse titanium tetrachloride slurry containing vanadium oxychloride contains carbon, which is also called carbon-containing slurry. At present, the carbon-containing slurry is subjected to evaporation and condensation treatment by adopting methods such as steam or electric heating, and the treatment method is simpler, but the energy consumption in the treatment process is higher, so that the production cost is increased.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vanadium removal method for titanium tetrachloride in a boiling chlorination system, wherein the vanadium removal treatment is directly carried out in the boiling chlorination system, so that vanadium in the titanium tetrachloride can be effectively removed, and the stable and continuous production of the boiling chlorination system is ensured; and the carbonaceous slurry can be stably treated without additional steam heating or electric heating.
The technical proposal of the invention is as follows:
a vanadium removal method for titanium tetrachloride in a boiling chlorination system comprises the following specific steps:
the boiling chlorination vanadium removal system comprises a boiling chlorination furnace and is characterized in that: the device comprises a boiling chlorination furnace, a quenching pipe, a gas outlet, a titanium tetrachloride leaching tower, a titanium tetrachloride storage tank, a crude titanium tetrachloride processor, a mixed slurry outlet and an atomizing nozzle, wherein the outlet of the boiling chlorination furnace is connected with the dust collector through the quenching pipe; the carbon-containing slurry inlet of the crude titanium tetrachloride processor is connected with a carbon-containing slurry tank through a carbon-containing slurry pipeline; a slurry pump I is arranged on the mixed slurry pipeline, and a slurry pump II is arranged on the carbon-containing slurry pipeline.
The method comprises the steps of pumping carbon-containing slurry generated by purifying titanium tetrachloride and removing vanadium with mineral oil into a carbon-containing slurry tank, continuously and stably pumping the carbon-containing slurry into a crude titanium tetrachloride processor through a slurry pump II at the top of the carbon-containing slurry tank, mixing the carbon-containing slurry with crude titanium tetrachloride liquid to obtain mixed slurry, continuously and stably supplying the crude titanium tetrachloride liquid in the crude titanium tetrachloride processor through a titanium tetrachloride storage tank, returning the mixed slurry into a quench tube through a slurry pump I, stabilizing the liquid level of the mixed slurry in the crude titanium tetrachloride processor, mixing the mixed slurry atomized through an atomization nozzle with titanium tetrachloride in a gas phase generated by boiling chlorination reaction in a boiling chlorination furnace, reacting vanadium oxychloride in the titanium tetrachloride in the gas phase with mineral oil carbonized product in the carbon-containing slurry to generate vanadium dichloride, entering a dust collector along with the titanium tetrachloride in the gas phase, collecting and treating the vanadium dichloride, enabling the gas phase in the dust collector to enter a titanium tetrachloride leaching tower from a gas outlet of the dust collector, delivering the obtained titanium tetrachloride liquid into the titanium tetrachloride storage tank through a centrifugal pump I, settling the titanium tetrachloride liquid in the titanium tetrachloride storage tank, obtaining crude titanium tetrachloride liquid at the bottom of the titanium tetrachloride storage tank, continuously and stably pumping the titanium tetrachloride liquid into the crude titanium tetrachloride processor through the centrifugal pump II.
Further, the flow rate of the titanium tetrachloride in the vapor phase is 10t/h to 12t/h.
Furthermore, a flowmeter is also arranged on the carbon-containing slurry pipeline, so that the carbon-containing slurry quantity entering the crude titanium tetrachloride processor can be stably controlled.
Further, the flow rate of the carbon-containing slurry entering the crude titanium tetrachloride processor is 1.5t/h-2.5t/h, and the solid content of the carbon-containing slurry is 10% -15%.
Further, the solid content of the mixed slurry in the crude titanium tetrachloride processor is 6-10%.
Further, the crude titanium tetrachloride liquid may also be crude titanium tetrachloride obtained by a boiling chlorination process.
Further, a centrifugal pump I is arranged on a pipeline between the titanium tetrachloride leaching tower and the titanium tetrachloride storage tank.
Further, a centrifugal pump II is arranged on a pipeline between the titanium tetrachloride storage tank and the crude titanium tetrachloride processor.
The invention has the beneficial effects that:
the solid content of the carbon-containing slurry in the vanadium removal process is controlled, the vanadium removal effect is ensured, the solid content of the mixed slurry can be regulated by adding the crude titanium tetrachloride in the crude titanium tetrachloride processor, the gaseous titanium tetrachloride in the boiling aluminum chloride can be effectively and continuously treated in a stable manner, vanadium oxychloride in the gaseous titanium tetrachloride is enabled to generate vanadium oxychloride solid, the vanadium oxychloride solid is collected in the dust collection process, the vanadium content in the crude titanium tetrachloride is effectively controlled, the continuous and stable operation of boiling chlorination is ensured, the production procedure of carbon-containing slurry treatment is reduced, and the energy consumption is reduced. The vanadium content in the generated titanium tetrachloride is low, meets the product index of the vanadium-removing titanium tetrachloride, and can be directly used as a raw material to enter the production of silicon-removing titanium tetrachloride.
Drawings
FIG. 1 is a schematic diagram of the boiling chlorination vanadium removal system of the present disclosure;
in the figure, a 1-boiling chlorination furnace, a 2-quenching pipe, a 3-dust collector, a 4-titanium tetrachloride leaching tower, a 5-titanium tetrachloride storage tank, a 6-crude titanium tetrachloride processor, a 7-mixed slurry pipeline and an 8-atomization spray nozzle; 9-slurry pump I, 10-carbon-containing slurry tank, 11-carbon-containing slurry pipeline, 12-slurry pump II, 13-flowmeter, 14-centrifugal pump I, 15-centrifugal pump II.
Detailed Description
The embodiments are described below with reference to the drawings.
Example 1
The boiling chlorination vanadium removal system comprises a boiling chlorination furnace 1, wherein an outlet of the boiling chlorination furnace 1 is connected with a dust collector 3 through a quenching pipe 2, a gas outlet of the dust collector 3 is sequentially connected with a titanium tetrachloride leaching tower 4 and a titanium tetrachloride storage tank 5 through a pipeline, a crude titanium tetrachloride processor 6 is connected with a crude titanium tetrachloride liquid outlet at the bottom of the titanium tetrachloride storage tank 5 through a pipeline, a mixed slurry outlet of the crude titanium tetrachloride processor 6 is communicated with the quenching pipe 2 through a mixed slurry pipeline 7, and an atomization nozzle 8 is arranged at a discharge port of the mixed slurry pipeline 7; the carbonaceous slurry inlet of the crude titanium tetrachloride processor 6 is connected with a carbonaceous slurry tank 10 through a carbonaceous slurry pipeline 11; a slurry pump I9 is arranged on the mixed slurry pipeline 7, and a slurry pump II 12 is arranged on the carbon-containing slurry pipeline 11; a flowmeter 13 is also arranged on the carbon-containing mud pipeline 11, so that the carbon-containing mud quantity entering the coarse titanium tetrachloride processor 6 can be stably controlled; a centrifugal pump I14 is arranged on a pipeline between the titanium tetrachloride leaching tower 4 and the titanium tetrachloride storage tank 5, and a centrifugal pump II 15 is arranged on a pipeline between the titanium tetrachloride storage tank 5 and the crude titanium tetrachloride processor 6.
The method comprises the steps of pumping carbon-containing slurry generated by purifying titanium tetrachloride and removing vanadium with mineral oil into a carbon-containing slurry tank 10, continuously and stably pumping the carbon-containing slurry into a crude titanium tetrachloride processor 6 through a slurry pump II 12 at the top of the carbon-containing slurry tank 10, mixing the carbon-containing slurry with crude titanium tetrachloride liquid to obtain mixed slurry, continuously and stably supplying the crude titanium tetrachloride liquid in the crude titanium tetrachloride processor 6 through a titanium tetrachloride storage tank 5, returning the mixed slurry into a quenching tube 2 through a slurry pump I9 to stabilize the liquid level of the mixed slurry in the crude titanium tetrachloride processor 6, mixing the mixed slurry atomized through an atomization nozzle 8 with titanium tetrachloride in a gas phase generated by boiling chlorination reaction in a boiling chlorination furnace 1, reacting vanadium oxychloride in the titanium tetrachloride with mineral oil carbonized product in the carbon-containing slurry to generate vanadium dichloride, entering a dust collector 3 along with the gas phase, collecting and treating the vanadium dichloride in the dust collector 3, entering the titanium tetrachloride in the dust collector 3 into a titanium tetrachloride tower 4 through a gas outlet of the dust collector 3, delivering the obtained titanium tetrachloride liquid into the titanium tetrachloride storage tank 5 through a centrifugal pump I14, settling the titanium tetrachloride liquid in the titanium tetrachloride storage tank 5, obtaining crude titanium tetrachloride liquid at the bottom of the titanium tetrachloride storage tank 5, and continuously leaching the titanium tetrachloride processor 6 through a centrifugal pump II 15.
The content of vanadium oxychloride in the gas-phase titanium tetrachloride generated by the boiling chlorination reaction in the boiling chlorination furnace 1 is 0.152%, the flow of the gas-phase titanium tetrachloride in the quenching pipe 2 is 12t/h, the carbon-containing slurry is continuously and stably pumped into the crude titanium tetrachloride processor 6, the flow of the carbon-containing slurry is 2.5t/h, the solid content of the carbon-containing slurry is 10%, and the solid content of the mixed slurry in the crude titanium tetrachloride processor 6 is 10%; the content of vanadium oxychloride in the crude titanium tetrachloride in the titanium tetrachloride tank was 0.0006%.
Example 2
The boiling chlorination vanadium removal system comprises a boiling chlorination furnace 1, wherein an outlet of the boiling chlorination furnace 1 is connected with a dust collector 3 through a quenching pipe 2, a gas outlet of the dust collector 3 is sequentially connected with a titanium tetrachloride leaching tower 4 and a titanium tetrachloride storage tank 5 through a pipeline, a crude titanium tetrachloride processor 6 is connected with a crude titanium tetrachloride liquid outlet at the bottom of the titanium tetrachloride storage tank 5 through a pipeline, a mixed slurry outlet of the crude titanium tetrachloride processor 6 is communicated with the quenching pipe 2 through a mixed slurry pipeline 7, and an atomization nozzle 8 is arranged at a discharge port of the mixed slurry pipeline 7; the carbonaceous slurry inlet of the crude titanium tetrachloride processor 6 is connected with a carbonaceous slurry tank 10 through a carbonaceous slurry pipeline 11; a slurry pump I9 is arranged on the mixed slurry pipeline 7, and a slurry pump II 12 is arranged on the carbon-containing slurry pipeline 11; a flowmeter 13 is also arranged on the carbon-containing mud pipeline 11, so that the carbon-containing mud quantity entering the coarse titanium tetrachloride processor 6 can be stably controlled; a centrifugal pump I14 is arranged on a pipeline between the titanium tetrachloride leaching tower 4 and the titanium tetrachloride storage tank 5, and a centrifugal pump II 15 is arranged on a pipeline between the titanium tetrachloride storage tank 5 and the crude titanium tetrachloride processor 6.
Purification of titanium tetrachloride with mineral oil to remove vanadium: titanium tetrachloride enters the bottom of the vanadium removal reaction tower at the speed of 10t/h, and mineral oil is sent to the bottom of the vanadium removal reaction tower, wherein the feeding speed ratio of the titanium tetrachloride to the mineral oil is 1000:1; the reaction temperature in the vanadium removal tower is 130 ℃, the pressure is 50kPa, and the carbon-containing slurry is generated at the bottom of the tower;
the method comprises the steps of pumping carbon-containing slurry into a carbon-containing slurry tank 10, continuously and stably pumping the carbon-containing slurry into a crude titanium tetrachloride processor 6 through a slurry pump II 12 at the top of the carbon-containing slurry tank 10, mixing the carbon-containing slurry with crude titanium tetrachloride liquid to obtain mixed slurry, continuously and stably supplying the crude titanium tetrachloride liquid in the crude titanium tetrachloride processor 6 through a titanium tetrachloride storage tank 5, returning the mixed slurry into a quenching pipe 2 through a slurry pump I9, stabilizing the liquid level of the mixed slurry in the crude titanium tetrachloride processor 6, ensuring that the carbon-containing slurry is continuously and stably supplied to a quenching pipe, mixing the mixed slurry atomized through an atomization nozzle 8 with titanium tetrachloride in a gas phase generated by boiling chlorination reaction in a boiling chlorination furnace 1, reacting vanadium oxychloride in the titanium tetrachloride in the gas phase with mineral oil carbonized product in the carbon-containing slurry to generate vanadium dichloride, entering a dust collector 3 along with the titanium tetrachloride in the gas phase, collecting and treating the vanadium dichloride in the dust collector 3, entering the titanium tetrachloride in the gas phase of the dust collector 3 into a titanium tetrachloride storage tower 4 through a gas outlet of a centrifugal pump I14, settling the titanium tetrachloride liquid in the titanium tetrachloride storage tank 5, obtaining the crude vanadium dichloride through a centrifugal pump II, and continuously pumping the titanium tetrachloride liquid in the titanium tetrachloride tank 6, and continuously carrying out the reaction in the reaction tank 15. The content of vanadium oxychloride in the gas-phase titanium tetrachloride generated by the boiling chlorination reaction in the boiling chlorination furnace 1 is 0.052%, the flow rate of the gas-phase titanium tetrachloride in the quenching pipe 2 is 10t/h, the carbon-containing slurry is continuously and stably pumped into the crude titanium tetrachloride processor 6, the flow rate of the carbon-containing slurry is 1.5t/h, the solid content of the carbon-containing slurry is 12%, and the solid content of the mixed slurry in the crude titanium tetrachloride processor 6 is 6%. The content of vanadium oxychloride in the titanium tetrachloride storage tank was 0.0007%.
Example 3.
The boiling chlorination vanadium removal system comprises a boiling chlorination furnace 1, wherein an outlet of the boiling chlorination furnace 1 is connected with a dust collector 3 through a quenching pipe 2, a gas outlet of the dust collector 3 is sequentially connected with a titanium tetrachloride leaching tower 4 and a titanium tetrachloride storage tank 5 through a pipeline, a crude titanium tetrachloride processor 6 is connected with a crude titanium tetrachloride liquid outlet at the bottom of the titanium tetrachloride storage tank 5 through a pipeline, a mixed slurry outlet of the crude titanium tetrachloride processor 6 is communicated with the quenching pipe 2 through a mixed slurry pipeline 7, and an atomization nozzle 8 is arranged at a discharge port of the mixed slurry pipeline 7; the carbonaceous slurry inlet of the crude titanium tetrachloride processor 6 is connected with a carbonaceous slurry tank 10 through a carbonaceous slurry pipeline 11; a slurry pump I9 is arranged on the mixed slurry pipeline 7, and a slurry pump II 12 is arranged on the carbon-containing slurry pipeline 11; a flowmeter 13 is also arranged on the carbon-containing mud pipeline 11, so that the carbon-containing mud quantity entering the coarse titanium tetrachloride processor 6 can be stably controlled; a centrifugal pump I14 is arranged on a pipeline between the titanium tetrachloride leaching tower 4 and the titanium tetrachloride storage tank 5, and a centrifugal pump II 15 is arranged on a pipeline between the titanium tetrachloride storage tank 5 and the crude titanium tetrachloride processor 6.
The method comprises the steps of pumping carbon-containing slurry generated by purifying titanium tetrachloride and removing vanadium with mineral oil into a carbon-containing slurry tank 10, continuously and stably pumping the carbon-containing slurry into a crude titanium tetrachloride processor 6 through a slurry pump II 12 at the top of the carbon-containing slurry tank 10, mixing the carbon-containing slurry with crude titanium tetrachloride liquid to obtain mixed slurry, continuously and stably supplying the crude titanium tetrachloride liquid in the crude titanium tetrachloride processor 6 through a titanium tetrachloride storage tank 5, returning the mixed slurry into a quenching tube 2 through a slurry pump I9 to stabilize the liquid level of the mixed slurry in the crude titanium tetrachloride processor 6, mixing the mixed slurry atomized through an atomization nozzle 8 with titanium tetrachloride in a gas phase generated by boiling chlorination reaction in a boiling chlorination furnace 1, reacting vanadium oxychloride in the titanium tetrachloride with mineral oil carbonized product in the carbon-containing slurry to generate vanadium dichloride, entering a dust collector 3 along with the gas phase, collecting and treating the vanadium dichloride in the dust collector 3, entering the titanium tetrachloride in the dust collector 3 into a titanium tetrachloride tower 4 through a gas outlet of the dust collector 3, delivering the obtained titanium tetrachloride liquid into the titanium tetrachloride storage tank 5 through a centrifugal pump I14, settling the titanium tetrachloride liquid in the titanium tetrachloride storage tank 5, obtaining crude titanium tetrachloride liquid at the bottom of the titanium tetrachloride storage tank 5, and continuously leaching the titanium tetrachloride processor 6 through a centrifugal pump II 15.
The content of vanadium oxychloride in the titanium tetrachloride in the gas phase generated by the boiling chlorination reaction in the boiling chlorination furnace 1 is 0.119%, the flow rate of the titanium tetrachloride in the quenching pipe 2 is 11t/h, the carbon-containing slurry is continuously and stably pumped into the crude titanium tetrachloride processor 6, the flow rate of the carbon-containing slurry is 2t/h, the solid content of the carbon-containing slurry is 15%, and the solid content of the mixed slurry in the crude titanium tetrachloride processor 6 is 8%. The content of vanadium oxychloride in the titanium tetrachloride storage tank was 0.0005%.
Monitoring the stability of the flow rates of the carbon-containing slurry and the crude titanium tetrachloride by combining the liquid levels in the carbon-containing slurry tank and the crude titanium tetrachloride processor; the method can continuously and stably treat the carbon-containing slurry, reduces the vanadium content in the titanium tetrachloride produced by the boiling chlorination system, is beneficial to the stable operation of the original rectification system, and reduces the consumption of materials. Because vanadium impurities are removed in the boiling chlorination production process, crude titanium tetrachloride produced by the method can be directly taken as a raw material to be produced by desilication titanium tetrachloride.
Claims (5)
1. A vanadium removal method for titanium tetrachloride in a boiling chlorination system is characterized by comprising the following steps:
the method comprises the following specific steps:
(1) Preparation of Mixed slurry
The system comprises a boiling chlorination vanadium removal system, wherein an outlet of the boiling chlorination furnace is connected with a dust collector through a quenching pipe, a gas outlet of the dust collector is sequentially connected with a titanium tetrachloride leaching tower and a titanium tetrachloride storage tank through a pipeline, a crude titanium tetrachloride liquid outlet at the bottom of the titanium tetrachloride storage tank is connected with a crude titanium tetrachloride processor through a pipeline, a mixed slurry outlet of the crude titanium tetrachloride processor is communicated with the quenching pipe through a mixed slurry pipeline, and an atomization nozzle is arranged at a discharge port of the mixed slurry pipeline; the carbon-containing slurry inlet of the crude titanium tetrachloride processor is connected with a carbon-containing slurry tank through a carbon-containing slurry pipeline; a slurry pump I is arranged on the mixed slurry pipeline, and a slurry pump II is arranged on the carbon-containing slurry pipeline;
pumping carbon-containing slurry generated by purifying and removing vanadium from titanium tetrachloride by using mineral oil into a carbon-containing slurry tank, continuously and stably pumping the carbon-containing slurry into a crude titanium tetrachloride processor through a slurry pump II at the top of the carbon-containing slurry tank, and mixing the carbon-containing slurry with crude titanium tetrachloride liquid, wherein the crude titanium tetrachloride liquid in the crude titanium tetrachloride processor is continuously and stably supplied through a titanium tetrachloride storage tank, the flow rate of the carbon-containing slurry entering the crude titanium tetrachloride processor is 1.5t/h-2.5t/h, the solid content of the carbon-containing slurry is 10% -15%, and mixed slurry with the solid content of 6% -10% is obtained;
(2) Reduction of vanadyl chloride in titanium tetrachloride in the vapor phase to remove vanadium
The mixed slurry is returned into a quenching pipe through a slurry pump I, so that the liquid level of the mixed slurry in a crude titanium tetrachloride processor is stable, the mixed slurry atomized through an atomization nozzle is mixed with gas-phase titanium tetrachloride generated by boiling chlorination reaction in a boiling chlorination furnace, the flow rate of the gas-phase titanium tetrachloride is 10t/h-12t/h, and vanadium oxychloride in the gas-phase titanium tetrachloride reacts with mineral oil carbonized products in carbon-containing slurry to generate vanadium oxychloride;
(3) Dust collection and impurity removal of vanadium oxychloride
The method comprises the steps that with the gas-phase titanium tetrachloride entering a dust collector, vanadium oxychloride is collected and treated by the dust collector, the gas-phase titanium tetrachloride in the dust collector enters a titanium tetrachloride leaching tower from a gas outlet of the dust collector for leaching, the obtained titanium tetrachloride liquid is sent into a titanium tetrachloride storage tank through a centrifugal pump I, wherein the content of vanadium oxychloride in the crude titanium tetrachloride is 0.0005% -0.0007%, the titanium tetrachloride liquid is settled in the titanium tetrachloride storage tank, the crude titanium tetrachloride liquid is obtained at the bottom of the titanium tetrachloride storage tank, and the crude titanium tetrachloride liquid is continuously and stably pumped into a crude titanium tetrachloride processor through a centrifugal pump II.
2. The method for removing vanadium from titanium tetrachloride in a boiling chlorination system of claim 1, wherein: a flowmeter is also mounted on the carbonaceous mud pipeline.
3. The method for removing vanadium from titanium tetrachloride in a boiling chlorination system of claim 1, wherein: the crude titanium tetrachloride liquid may also be crude titanium tetrachloride obtained by a boiling chlorination process.
4. The method for removing vanadium from titanium tetrachloride in a boiling chlorination system of claim 1, wherein: and a centrifugal pump I is arranged on a pipeline between the titanium tetrachloride leaching tower and the titanium tetrachloride storage tank.
5. The method for removing vanadium from titanium tetrachloride in a boiling chlorination system of claim 1, wherein: a centrifugal pump II is arranged on a pipeline between the titanium tetrachloride storage tank and the crude titanium tetrachloride processor.
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| CN1415547A (en) * | 2002-07-19 | 2003-05-07 | 锦州铁合金(集团)股份有限公司钛白粉厂 | Technique and method for treating titanium tetrachloride slurry containing vanadium |
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