Secondary chlorine injection device for fluidized chlorination furnace of fine-grained titanium raw material

Abstract

The invention discloses a secondary chlorine gas injection device for a fine-particle titanium raw material boiling chlorination furnace. The secondary chlorine gas injection device comprises a boiling chlorination reactor main section, a secondary chlorine gas injection section, a furnace top, a secondary chlorine gas introducing hole, an inverted U-shaped tube shell and a cyclone separator. The cyclone separator is used for separating solid powder and gaseous TiCl4; an ascending tube is arranged in the middle of the cyclone separator, and the lower part of the cyclone separator is communicated with a circulating return leg. The secondary chlorine gas injection section, an outlet of the furnace top, the cyclone separator and the circulating return leg are communicated in sequence, and an inverted U-shaped pipeline is formed at the furnace top. The inverted U-shaped tube shell is arranged outside the inverted U-shaped pipeline and forms a sealed secondary chlorine gas injection channel together with the inverted U-shaped pipeline. The mutual effect of rotational shear of gas and solids at the upper part of the boiling chlorination furnace and the centrifugal separation effect are enhanced, so that the escaped fine particles which not completely react are reduced; and meanwhile, the chlorination reaction efficiency and the yield of TiCl4 are increased, and the temperature of the TiCl4 gas at the top of the boiling chlorination furnace is balanced.

Description

technical field [0001] The invention relates to a boiling furnace for preparing titanium tetrachloride, in particular to a secondary chlorine filling device for a boiling chlorination furnace for preparing titanium tetrachloride by using fine-grained titanium raw materials, and belongs to the technical field of titanium tetrachloride preparation. Background technique [0002] Boiling chlorination of fine-grained titanium raw materials is a method for preparing titanium tetrachloride by chlorination of the mixture of fine-grained titanium-rich raw materials and petroleum coke after sorting and processing to remove impurities in a boiling fluidized state under the action of chlorine gas. . Due to the small particles of titanium raw materials, the use of traditional boiling chlorination process and equipment will inevitably lead to a large number of fine-grained titanium raw materials escaping, and the technical and economic indicators will deteriorate. [0003] Patent CN10381...

AI Technical Summary

Problems solved by technology

However, due to the complex setting of small hole distribution, it is difficult to guarantee the processing accuracy, and there is dispersion discontinuity at the same time, which affects the actual operation effect of the secondary strong rotation separation

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