A kind of titanium tetrachloride preparation system and its tail gas treatment

Abstract

The invention discloses a titanium tetrachloride preparation system and its isolation system, and a method for treating tail gas of a titanium tetrachloride refining system, including a titanium tetrachloride refining system, a chlorination condensation system, a tail gas rinsing system and an isolation system, Wherein, the tail gas outlet of the titanium tetrachloride refining system is connected to the head end of the tail gas pipeline of the isolation system; the tail gas outlet of the chlorination condensation system is connected to the tail gas rinsing system. The isolation system includes a tail gas pipeline, a liquid sealing tank and a breathing tube, wherein the head end of the tail gas pipeline is used to communicate with the refining system, and the end extends below the liquid level of the liquid sealing tank. The end is connected to the liquid sealing tank and is located above the liquid level, and the end is used to connect to the chlorination condensation system. The present invention adopts the liquid sealing tank to realize the isolation between the refining system and the follow-up system, thereby effectively avoiding the pressure influence of the follow-up system on the refining system in the prior art.

Description

technical field [0001] The invention relates to the technical field of titanium tetrachloride production, in particular to a titanium tetrachloride preparation system and its isolation system, and a method for treating tail gas of a titanium tetrachloride refining system. Background technique [0002] Titanium tetrachloride is the main raw material for industrial products such as chlorination titanium dioxide and titanium sponge. The main production methods at home and abroad include boiling chlorination and molten salt chlorination, both of which are reacted with chlorine gas at high temperature through raw materials containing titanium dioxide. Titanium tetrachloride is generated, and the titanium tetrachloride has a large impurity content at this time. It is necessary to purify the titanium tetrachloride through a refining system. At present, the purified exhaust gas usually directly enters the exhaust gas system for leaching. In contact with water, it will be hydrolyzed ...

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the embodiment of the present invention proposes a titanium tetrachloride preparation system and its isolation system, as well as a treatment method for the tail gas of the titanium tetrachloride refining system, so as to solve the problem inside the refining system caused by the blockage of the tail gas system in the prior art. pressure fluctuation problem

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