Process for producing titanium dioxide

Details Process for producing titanium dioxide Process for producing titanium dioxide

1974-11-13

1976-06-29

Stern, Edward

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423659, C01G 2304

Patent

active

039668924

ABSTRACT:
Titanium dioxide is produced by a continuous gaseous oxidation of titanium tetrachloride or a titanium tetrachloride containing gas with oxygen or an oxygen containing gas, the improvement wherein both of said gases are separately preheated and the titanium tetrachloride or titanium tetrachloride containing gas is fed downwardly into the reactor from a burner equipped with a cooling jacket disposed at the upper part of the reactor and the oxygen or oxygen containing gas is fed downwardly through the burner into the reactor for reaction with titanium tetrachloride; and simultaneously, an inert gas and inert refractory particles are injected from the lower part of the reactor toward the inner wall of the reactor so that the inert refractory particles are caused to rise upwardly as a suspension, and the upward flow of the suspension is counter-currently contacted with the downwardly flow of the reaction product so as to rapidly cool the reaction product, and wherein the inert refractory particles injected upwardly are impinged on the inner wall of the reactor so as to prevent the deposition of titanium dioxide.

REFERENCES:
patent: 2789886 (1957-04-01), Kraus
patent: 2909409 (1959-10-01), Gregory
patent: 3022137 (1962-02-01), Nelson
patent: 3361525 (1968-01-01), DeRycke et al.
patent: 3485584 (1969-12-01), Zirngibl et al.
patent: 3615202 (1971-10-01), Stern et al.

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