Liquid level control device and control method of reduction distillation reactor

Abstract

The invention relates to a liquid level control device and method for a reduction distillation reactor, the control device comprises a submerged device, an argon pipeline and a liquid level measuring device, the submerged device is located at the lower part of the reduction distillation reactor, and a cavity is formed in the submerged device; the bottom surface of the submerged device is positioned above a liquid inlet of a magnesium chloride discharge pipe in the reduction distillation reactor, a plurality of hole channels communicated with the inside and the outside of the cavity are formed in the bottom surface of the submerged device, the side surface of the submerged device is opened and is connected with the lower end of the argon pipeline, the upper end of the argon pipeline penetrates out of a large cover at the top of the reduction distillation reactor, and a valve is mounted at the upper end of the argon pipeline; and the liquid level measuring device is used for measuring the liquid level height of the reduction distillation reactor. According to the control method, the fluctuation amplitude of the liquid level can be counteracted and compensated through argon filling and pressure relief of the submerged device, and therefore the effect of stabilizing the height of the liquid level is achieved.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal smelting equipment, in particular to a control device and a control method for the position of the upper liquid level of a liquid melt in a reduction distillation reactor in the production of sponge titanium. Background technique [0002] At present, the industrial sponge titanium production is mainly the method of reducing titanium tetrachloride with liquid magnesium at high temperature. In the reduction process, excess liquid magnesium is first added to the closed reactor, and then liquid titanium tetrachloride is continuously added, and the Mg element continuously converts TiCl 4 The Ti element in the process is reduced and replaced to generate spongy metal titanium and liquid magnesium chloride; in the distillation process, the sublimation properties of metal magnesium and magnesium chloride are used to distill and remove magnesium chloride and metal magnesium under low vacuum conditions to ob...

AI Technical Summary

Problems solved by technology

In addition, the violent fluctuation of the liquid level will also lead to a sharp rise or fall of the reaction zone. Under the dual effects of reaction thermal stress and chloride ion chemical erosion, the content of impurity elements in sponge titanium will exceed the standard, especially the iron element.

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