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Technique and method for treating titanium tetrachloride slurry containing vanadium

A technology of titanium tetrachloride and mud, which is applied in the direction of sludge treatment, water/sludge/sewage treatment, titanium halide, etc., can solve problems such as hindering production, high operating costs, and unresolved mud adding technology, so as to reduce operation Cost, cost reduction, money and energy saving effects

Inactive Publication Date: 2003-05-07
中信钛业股份有限公司
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  • Description
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  • Application Information

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Problems solved by technology

However, due to the lack of mature technology to deal with the discharged mud in time, it seriously hinders the production and brings great difficulties to the environmental protection treatment work.
[0003] In order to solve this problem, we commissioned a professional design unit to carry out scientific and technological development. We once designed a steam spiral drying process, but a new set of equipment is needed, and additional heat is supplied. The operating cost is high, and the mud addition technology cannot be solved, which cannot completely solve the environmental protection problem. was shelved
At present, there is no mature process technology to treat vanadium-containing mud and separate titanium tetrachloride and vanadium compounds

Method used

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  • Technique and method for treating titanium tetrachloride slurry containing vanadium
  • Technique and method for treating titanium tetrachloride slurry containing vanadium
  • Technique and method for treating titanium tetrachloride slurry containing vanadium

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Embodiment Construction

[0012] A titanium tetrachloride vanadium-containing slurry treatment technology, which uses a submerged pump 9 located in a titanium tetrachloride vanadium-containing slurry tank 10 to send the slurry to the first-stage gravity dust collector of the chlorination system through a pipeline 8 2 In the mechanical rotary sprayer 7 on the top, the slurry is sprayed into the first-stage gravity dust collector 2 with a diameter of 5m at a speed of 31.2m / min from a nozzle (diameter 210mm) rotating at a high speed of 1440 rpm. Countercurrent heat exchange with the 450℃ high temperature mixed gas discharged from the chlorination furnace 1, the titanium tetrachloride droplets in the mud are gasified, and the mixed gas enters the second-stage gravity dust collector 4, and most of the vanadium-containing solids are in the Under the action of gravity, it settles into the ash box 3 at the bottom of the dust collector 2 and is sent to the washing system at regular intervals. A small amount of unse...

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Abstract

A process for treating the sludge containing CCl4 and V to recover TiCl4 includes such steps as pumping said sludge from sludge tank to the stage-1 gravitational dust collector in chlorinating system, countercurrent heat exchange between the sludge sprayed from top and the high-temp gas mixture from chlorinating furnace to gasifying the atomized TiCl4 drops, introducing the gas mixture to stage-2 dust collector, depositing the most of V-contained solid into ash collector while further separating, and condensing the purified TiCl4 gas for collecting it in original system. Its advantages are high recovery rate of TiCl4 and no pollution.

Description

Technical field [0001] The invention belongs to a method for producing rutile titanium dioxide by halide vapor phase oxidation, and particularly relates to the treatment of vanadium-containing slurry discharged during the process of refining and removing crude titanium tetrachloride mineral oil to make titanium tetrachloride and solid (containing Vanadium solid) separation technology. Background technique [0002] During the continuous removal of vanadium from crude titanium tetrachloride mineral oil for the production of rutile titanium dioxide by halide vapor phase oxidation, 15-18 tons of vanadium-containing mud with a solid content of 30-40% must be discharged every day to ensure The process is proceeding normally. However, because there is no mature process technology to treat the discharged mud in time, it seriously hinders the production and brings great difficulties to environmental protection. [0003] In order to solve this problem, we commissioned a professional design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/02C01G23/07C02F11/00
Inventor 张清刘长河马天沛郑爱英张文库许金玲
Owner 中信钛业股份有限公司
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