Low-temperature fluidizing chlorination method and low-temperature fluidizing chlorination furnace

Abstract

The invention provides a low-temperature fluidizing chlorination method and a low-temperature fluidizing chlorination furnace. According to the method, liquid TiCl4 is introduced into a reaction section of the low-temperature fluidizing chlorination furnace so that the temperature of the reaction section of the low-temperature fluidizing chlorination furnace can be controlled within a preset temperature range. The low-temperature fluidizing chlorination furnace comprises the reaction section for fluidizing chlorination and a conveying unit which is used for conveying the liquid TiCl4 into the reaction section of the low-temperature fluidizing chlorination furnace. The low-temperature fluidizing chlorination method and the low-temperature fluidizing chlorination furnace disclosed by the invention can be used for effectively regulating and controlling the residence time of materials in the chlorination furnace and the reaction temperature of the materials in the chlorination furnace as well as increasing the chlorination rate and guaranteeing continuous, stable and smooth proceeding of a fluidizing chlorination process.

Description

technical field [0001] The invention relates to the technical field of low-temperature boiling chlorination reaction, and more specifically, relates to a low-temperature boiling chlorination method and a low-temperature boiling chlorination furnace capable of realizing temperature control of low-temperature boiling chlorination. Background technique [0002] The Panxi area is rich in vanadium-titanium magnetite, which contains important strategic resources such as iron, vanadium, and titanium. However, due to the complex composition and distribution of the ore, most of the titanium enters Panzhihua Iron and Steel's unique high Titanium blast furnace slag (TiO 2 In order to recover titanium resources in titanium-containing blast furnace slag, Panzhihua Iron and Steel has developed the "high temperature carbonization of blast furnace slag - low temperature selective chlorination to produce TiCl 4 " process, which is to use a carbonaceous reducing agent to perform high-tempera...

AI Technical Summary

Problems solved by technology

In the prior art, in order to control the temperature of the reaction section in the rear furnace of the low-temperature fluidized fluidized furnace within an appropriate range, a large amount of reaction heat is usually taken away by slagging to reduce the temperature in the furnace. When a large amount of heat of reaction reduces the temperature in the furnace to ensure that the temperature in the furnace is in an appropriate range, a large amount of incompletely reacted materials will be directly discharged from the chlorination furnace, resulting in waste of resources and low chlorination rate, and unreacted The excess chlorine gas will also enter the tail gas treatment system; in addition, when the slagging speed is too fast, it will also cause the temperature of the chlorination furnace to drop rapidly, resulting in the phenomenon of dead furnace shutdown

That is to say, when adopting the low-temperature boiling chlorination furnace of prior art to carry out the low-temperature boiling chlorination reaction, there will be problems such as low chlorination rate and difficult control of reaction temperature

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