Separation method and device of zirconium tetrachloride synthesis gas

Abstract

The invention discloses a separation method of zirconium tetrachloride synthesis gas. The zirconium tetrachloride synthesis gas is prepared from zirconium tetrachloride by a chlorination method. The method comprises the following steps of (1) lowering the temperature of the zirconium tetrachloride synthesis gas to 150 to 180 DEG C; separating out first coarse zirconium tetrachloride to obtain first synthesis gas; (2) lowering the temperature of the first synthesis gas to 80 to 120 DEG C; separating out second coarse zirconium tetrachloride to obtain second synthesis gas. The separation methodand device of zirconium tetrachloride synthesis gas provided by the method have the advantages that according to the method, the first coarse zirconium tetrachloride and the second coarse zirconium tetrachloride are respectively cooled and separated through stepped temperature reduction; the first coarse zirconium tetrachloride and the second coarse zirconium tetrachloride can be respectively usedas a coarse product to be used; the temperature used for separating out the first coarse zirconium tetrachloride through temperature reduction is lower; most zirconium tetrachloride in the zirconiumtetrachloride synthesis gasis separated out; the cold quantity is greatly saved; the separation cost of the zirconium tetrachloride synthesis gas is reduced.

Description

technical field [0001] The invention belongs to the technical field of zirconium tetrachloride preparation, and in particular relates to a method and a device for separating zirconium tetrachloride synthesis gas. Background technique [0002] The boiling chlorination method is the most potential zirconium tetrachloride production process, which has the advantages of high product quality, low production cost and high utilization rate of raw materials. The boiling chlorination method uses a mixture of zircon sand, reducing agent and chemical heat supplement to react in a fluidized bed reactor to prepare zirconium tetrachloride, and at the same time by-produce silicon tetrachloride. The reducing agent includes charcoal, petroleum coke, Coal powder, etc., chemical heat supplements include silicon powder, ferrosilicon, silicon carbide, etc. The composition of the zirconium tetrachloride synthesis gas produced by the chlorination method is very complex, not only the separation pr...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a separation method and device for zirconium tetrachloride synthesis gas in view of the above-mentioned deficiencies in the prior art, which solves the complicated separation process of zirconium tetrachloride synthesis gas in the prior art. , Technical issues of energy-consuming manuscripts

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