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US 4,937,064 AGranted
Process of using an improved flue in a titanium dioxide process
AssigneeE. I. Du Pont de Nemours and Company
InventorRaul A. Gonzalez
Life of this patent
Estimating the term…
Abstract
In the process for producing titanium dioxide by (a) reacting titanium tetrachloride and oxygen in the vapor phase to produce titanium dioxide, and (b) subsequently cooling the titanium dioxide in a flue, an improvement comprising utilizing for all or a portion of the flue a conduit having a plurality of internal, substantially longitudinal protuberances, depressions or both.
Claims15
In the process for producing titanium dioxide by
- (a) reacting titanium tetrachloride and oxygen in the vapor phase to produce titanium dioxide, and
- (b) subsequently cooling the titanium dioxide by passing it through a flue, the improvement comprising utilizing for all or a portion of the flue a pipe having a plurality of protuberances, depressions or both which extend longitudinally along the interior surface of said pipe, said pipe having an inlet and outlet for the passage of titanium dioxide.
Dependencies are inferred from the claim text.