Apparatus and method for treating titanium tetrachloride slurry containing vanadium

Abstract

A titanium tetrachloride vanadium-containing mud treatment technology and equipment, it uses the device and heat energy of the original chlorination system to treat titanium tetrachloride and vanadium-containing mud in the vanadium-containing mud discharged from the crude titanium tetrachloride mineral oil. Techniques for the separation of vanadium solids. Its feature is to use the submerged pump in the titanium tetrachloride vanadium-containing mud storage tank to send the mud to the mechanical rotary sprayer on the top of the first-stage gravity dust collector of the chlorination system, and then spray the mud into the dust collector and The high-temperature mixed gas discharged from the chlorination furnace is counter-currently exchanged for heat, and the titanium tetrachloride droplets in the mud are gasified, and enter the second-stage dust collector with the mixed gas, and most of the vanadium-containing solids settle under the action of gravity. The ash box at the bottom of the dust collector is sent to the flushing system regularly, and a small amount of unseparated vanadium-containing solids enter the second-stage dust collector with the mixed gas for further separation, and the purified titanium tetrachloride gas enters the original production line. The titanium tetrachloride condensation collection system of the system. The process has the advantages of energy saving, low operation cost, high recovery rate of titanium tetrachloride and no pollution of discharged waste residue.

Description

technical field [0001] The invention belongs to a method for producing rutile titanium dioxide by a halide vapor-phase oxidation method, and particularly relates to treating the vanadium-containing mud discharged during the refining of crude titanium tetrachloride mineral oil to remove vanadium, so that titanium tetrachloride and solid (containing Vanadium solids) separation technology. Background technique [0002] During the continuous vanadium removal process of crude titanium tetrachloride mineral oil produced by halide vapor phase oxidation method, 15-18 tons of vanadium-containing mud with a solid content of 30-40% should be discharged every day to ensure Its process is carried out normally. However, because there is no mature process 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 professiona...

AI Technical Summary

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

Images