Tail chlorine treatment device for whole-process production of titanium sponge and treatment method thereof

Abstract

The invention relates to a tail chlorine treatment device for full-process production of sponge titanium and a treatment method thereof, the device comprises a first treatment unit and a second treatment unit which are the same in structure, each treatment unit comprises an electrolysis system, a chlorination furnace, a chlorine pipeline and a tail chlorine treatment pipeline, a chlorine compressor connected with the electrolysis system and a distributor connected with the chlorination furnace are arranged on the chlorine pipeline, an inlet of the tail chlorine treatment pipeline is connected with an outlet of the chlorine compressor, an outlet of the tail chlorine treatment pipeline is connected with the distributor, and a chlorine liquefying system is arranged on the tail chlorine treatment pipeline and used for liquefying chlorine pressurized by the chlorine compressor and performing gas-liquid separation; the separated liquid chlorine enters a corresponding storage container, and the separated tail chlorine enters a distributor in a treatment unit; the two distributors in the two treatment units are bidirectionally communicated through the pipeline; according to the method, the electrolytic chlorine of the electrolysis system corresponding to the shutdown chlorination furnace can be consumed, so that leakage of chlorine or tail chlorine is avoided.

Description

technical field [0001] The invention relates to the field of non-ferrous metal metallurgy, in particular to a tail chlorine treatment device and a treatment method used in the whole process production of sponge titanium. Background technique [0002] At present, there are two methods for smelting magnesium in the world, electrolysis and silicothermic reduction. The electrolytic method is to combine MgCl 2 The raw material is purified into anhydrous magnesium chloride or the Mg-containing raw material is converted into anhydrous magnesium chloride, and the metal magnesium is electrolyzed in the molten state. Electrolysis is the main method of magnesium production. 80% of magnesium in foreign countries is produced by electrolysis. Electrolytic magnesium technology has low energy consumption (40% lower than traditional processes) and high concentration of by-product chlorine (more than 96%, which can be liquefied), etc. Advantage. [0003] In the whole production process of ...

AI Technical Summary

Problems solved by technology

When the chlorination furnace is shut down for maintenance or shut down due to failure, the chlorine gas produced by the electrolysis system needs to be liquefied by the chlorine gas liquefaction device, and the liquid chlorine produced enters the storage container for storage. The non-condensable gas in the liquefaction is called tail chlorine, tail chlorine It contains a certain amount of chlorine gas, which cannot be discharged directly. It needs to be put into tail chlorine treatment equipment, and sodium hypochlorite is prepared by absorbing lye. This will consume a large amount of caustic soda, which will also cause waste of chlorine gas in tail chlorine and increase the processing cost of enterprises.

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