Device and process for continuously preparing titanium oxychloride solution

Abstract

The invention belongs to the field of chemical engineering, and particularly relates to a device and process for continuously preparing a titanium oxychloride solution. The device comprises a titaniumtetrachloride flow meter, a venturi mixer, a pure water flow meter, a falling-film absorber, a hydrochloric acid absorption tower, a U-shaped pipe, a heat exchanger, a prepared-liquid circulating pump, a prepared-liquid circulating tank, an absorption circulating pump, a tail gas fan, a hydrochloric acid circulating tank and a hydrochloric acid circulating pump. According to the device and the process, the titanium oxychloride solution with adjustable concentration and adjustable temperature can be continuously produced and prepared, and reaction heat generated by a continuous mixing reactioncan be removed, so bumping caused by a large amount of heat release is avoided. The device operates under micro negative pressure in the whole system, so the potential safety hazard of gas leakage isavoided. The device can continuously suck and convey titanium tetrachloride under negative pressure according to metering, and is safe and reliable.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a device and a process for continuously preparing titanium oxychloride solution. Background technique [0002] Titanium tetrachloride is an important raw material for sponge titanium and titanium-containing compounds. Most of titanium tetrachloride is used to produce titanium dioxide and pigments. At room temperature, titanium tetrachloride is a colorless liquid. When exposed to air, it will react with water in the air to produce a large amount of white smoke and form a mixture of hydrated titanium dioxide and hydrochloric acid droplets. Titanium tetrachloride is hydrolyzed at a certain temperature and water volume to generate titanium dioxychloride. The chemical reaction equation is as follows: [0003] TiCl 4 +H 2 O=TiOCl 2 +2HCl [0004] Titanium tetrachloride undergoes an irreversible hydrolysis reaction at a high temperature and an excess of water to genera...

AI Technical Summary

Problems solved by technology

[0011] The first technical problem to be solved by the present invention is the problem of continuous production and preparation of titanyl chloride solution

[0012] The second technical problem to be solved by the present invention is to reduce the side reaction of excessive hydrolysis, the problem of uneven concentration of titanyl chloride solution and the problem of bumping caused by the inability to remove a large amount of exothermic heat in the preparation process

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