A process for the production of titanium tetrachloride in a fluid bed

By using a fluidized bed structure and alternating fluidized cooling zones, the problems of complex structure and high heat release in boiling chlorination reactors were solved, enabling efficient production of titanium tetrachloride and reducing production costs.

CN117383608BActive Publication Date: 2026-03-31PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Application Number
CN202311354846.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-19
Publication Date
2026-03-31
Estimated Expiration
2043-10-19

AI Technical Summary

Technical Problem

In the existing titanium tetrachloride production process, the fluidized bed chlorination reactor has a complex structure, is difficult to operate, and generates a large amount of heat during the reaction of carbonized slag with chlorine, leading to problems such as furnace sintering and furnace failure, resulting in high costs.

Method used

A fluidized bed structure is adopted, with alternating fluidization and cooling zones for the powder. Slag containing titanium carbide, titanium nitride, or titanium carbonitride is used as raw material, which reacts with chlorine gas. Heat is promptly discharged through the cooling medium to avoid local overheating.

Benefits of technology

This improved equipment reliability, enhanced heat exchange efficiency, reduced the production cost of titanium tetrachloride, and enabled a highly efficient production process.

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Abstract

The application provides a method for preparing titanium tetrachloride by using a fluidized bed, wherein the powder fluidization area and the cooling area are alternately arranged in the fluidized bed, the whole is in a rectangular structure, the powder material is added from one side of the fluidized bed, and is sequentially overflowed through several fluidization areas and cooling areas and then discharged from the outlet; the fluidization gas enters the fluidized bed through the distribution plate at the bottom of the fluidization area, and reacts with the added powder particles at a certain temperature to prepare titanium tetrachloride; and the cooling medium is sent from the bottom of the fluidized bed and discharged from the top outlet after heat exchange. The method uses the slag containing titanium carbide, titanium nitride or titanium carbonitride as the raw material, and reacts with chlorine gas, so that the reaction efficiency is high; the fluidized bed adopts the cross design of the fluidization area and the cooling area, so that the heat released by the chlorination reaction is discharged from the fluidized bed through the cooling medium in time, and the local heat release of the reaction is avoided, and the sintering of the material or even the dead furnace condition is avoided.
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