Low-temperature boiling chlorination furnace, slag discharging and flow guiding device thereof, and low-temperature boiling chlorination method

Abstract

The invention provides a low-temperature boiling chlorination furnace, a slag discharging and flow guiding device thereof, and a low-temperature boiling chlorination method. The slag discharging and flow guiding device comprises a slag discharging and flow guiding container and a slag discharging pipe, wherein the slag discharging and flow guiding container comprises a container body with an inner cavity, a slag outlet formed in the upper part of the container body, a slag inlet formed in the lower part of the container body, and a fluidized gas inlet formed in the lower end part of the container body, wherein the container body is communicated with a reaction section through the slag inlet; the height of the connecting position of the slag inlet and the reaction section is positioned at the position being 0.5m above the bottom of the reaction section and does not exceed the height of the surface of a material layer in a normal operation process; the slag discharging pipe is communicated with the container body through the slag outlet and can discharge slag downwards. The boiling chlorination furnace comprises the reaction section, a feeding device, a gas supply device and the slag discharging and flow guiding device. According to the invention, the residence time of materials in the chlorination furnace and the reaction temperature of the chlorination furnace can be regulated and controlled effectively, the chlorination rate can be increased, and continuous, stable and successful operation of a boiling chlorination process can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of low-temperature boiling chlorination reaction, in particular, to a slagging diversion device for a low-temperature boiling chlorination furnace, a low-temperature boiling chlorination furnace including the slagging diversion device, and a low-temperature boiling chlorination furnace. The chlorination method is especially suitable for the low-temperature boiling chlorination furnace and its slag discharge diversion device and the low-temperature boiling chlorination method for producing titanium tetrachloride by boiling chlorination of titanium carbide. Background technique [0002] At present, the boiling chlorination method is the main process for producing titanium tetrachloride. [0003] figure 1 A schematic structural view of a low-temperature fluidized chlorination furnace in the prior art is shown. Such as figure 1 Shown, the low-temperature fluidized chlorination furnace of prior art can compris...

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Problems solved by technology

[0004] However, for low-temperature boiling chlorination reactions that require a large amount of slagging, figure 1 The structure of the low-temperature boiling chlorination furnace shown is in production, and there are situations where the materials are not completely reacted, the temperature is not easy to control, and the furnace is even shut down.

For example, for the low-temperature boiling chlorination process of preparing titanium tetrachloride with carbonized blast furnace slag as raw material, no matter whether the titanium carbide in the raw material is an oxygen chlorination reaction or an oxygen chlorination reaction, a large amount of and due to the particularity of the process raw materials and the volatility of their components, the reaction will eventually produce a large amount of waste slag, and when a large amount of waste slag is discharged, there will be incomplete reaction of the material, difficult control of the temperature, and even shutdown of the furnace. and so on

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