Low temperature boiling chlorination furnace and temperature-controllable low-temperature boiling chlorination process

Abstract

The present invention discloses a low temperature boiling chlorination furnace and a temperature-controllable low-temperature boiling chlorination process. The temperature of a reaction zone of the low temperature boiling chlorination furnace can be controlled within a predetermined temperature range by introduction of liquid TiCl4 to the bottom of the reaction zone of the low temperature boiling chlorination furnace in the process of chlorination of carbonization slag containing TiC in the low temperature boiling chlorination furnace to obtain titanium tetrachloride. The temperature of the reaction zone of the low temperature boiling chlorination furnace can be effectively controlled within a suitable range by the device and the method, and mean while the amount of N2 is reduced.

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 furnace and a temperature-controllable low-temperature boiling chlorination method. 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-temperature reduction carbonization treatment on blast furnace ...

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

At the same time, N 2 It is only passed into the bed as a fluidization gas, does not participate in the reaction in the furnace and is used in a large amount

That is to say, when adopting low-temperature boiling chlorination furnace to carry out low-temperature boiling chlorination reaction, there are reaction temperature difficult to control, N 2 Mass consumption etc.

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