Titanium tetrachloride oxidation reactor feeding structure

Abstract

The invention discloses a titanium tetrachloride oxidation reactor feeding structure in the technical field of chemical metallurgy. The titanium tetrachloride oxidation reactor feeding structure comprises a feeding air curtain chamber, wherein one end of the feeding air curtain chamber is communicated with the tail end of an oxidizing furnace, and the other end of the feeding air curtain chamber is communicated with a reaction chamber; multiple air curtain holes are formed in the wall surface of the feeding air curtain chamber; the axes of the air curtain holes are tangentially arranged alongthe inner wall surface of the feeding air curtain chamber. The titanium tetrachloride oxidation reactor feeding structure disclosed by the invention has the beneficial effects that the feeding air curtain chamber is formed in the tail end of the oxidizing furnace for feeding, rotary mixed airflow can be formed on the inner wall surface of the feeding air curtain chamber, and TiCl4 can be uniformlydistributed by the rotary airflow to the greatest degree, so that the TiCl4 is fully contacted and reacted with O2, and the air curtain is formed to avoid the newly produced TiO2 particles from contacting with the furnace wall, and scar production is avoided. Meanwhile, the flow field in the reaction area of the oxidizing reactor is integrated, sedimentary enrichment of the oxidizing product is avoided, and particle size control of the oxidation product is facilitated.

Description

technical field [0001] The invention relates to a feed structure of a titanium tetrachloride oxidation reactor, which belongs to the technical field of chemical industry and metallurgy. Background technique [0002] TiCl 4 The gas-phase oxidation reaction is completed in a very short time, and a large amount of heat is released instantly, and TiO with extremely small particle size is generated during the reaction process. 2 The solid phase product is easy to deposit on the surface of the reactor, and gradually grows and sinters to form a hard scar layer, which finally blocks the main flow field of the oxidation reactor. In order to achieve continuous long-term stable production and improve the quality of oxidation products, especially to control the particle size distribution of products, it is necessary to improve TiCl 4 Feed uniformity and avoidance of oxidation product TiO 2 contact with the reactor wall. [0003] TiCl currently used in China 4 Oxidation reactors gen...

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Problems solved by technology

[0003] TiCl currently used in China 4 Oxidation reactors generally adopt the feeding ring method to realize TiCl 4 feeding, this method has serious problems such as uneven distribution and difficulty in controlling the momentum ratio, and a large amount of TiCl 4 Concentrate on the lower part of the feed ring and enter the main field of the oxidation reactor. 2 Insufficient contact, on the other hand, a large amount of material accumulation makes the newly generated TiO 2 Accumulation and contact with the furnace wall form scarring, and the scarring material is concentrated and deposited at the bottom of the furnace wall, so that the heat from the direction of the combustion chamber O 2 (The temperature is around 1600°C) to form a partial burning flame, which concentrates partial burning and exothermic heat on the wall of the oxidation furnace, and finally burns through the furnace body

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