Title:
PROCESS FOR MAKING TITANIUM DIOXIDE
Document Type and Number:
WIPO Patent Application WO2004076496
Kind Code:
A3
Abstract:
An improved process for producing titanium dioxide by reacting a titanium dioxide ore with chlorine to produce a gaseous stream containing titanium tetrachloride, condensing titanium tetrachloride from the gaseous stream containing titanium tetrachloride to produce chlorinator tail gas, vaporizing the condensed titanium tetrachloride, reacting the vaporized titanium tetrachloride with oxygen to produce a gaseous stream containing titanium dioxide particles and chlorine, separating the titanium dioxide particles from the gaseous stream containing titanium dioxide particles and chlorine to produce burner tail gas, and analyzing the chlorinator tail gas for residual chlorine to control the step of reacting the titanium dioxide ore with chlorine and/or analyzing the burner tail gas for oxygen to control the step of reacting the condensed titanium tetrachloride with oxygen. The improvement is to analyze the chlorinator tail gas for residual chlorine (and/or the burner tail gas for oxygen) using an on-line analyzer.
Inventors:
TURNBAUGH DONALD THEODORE JR
ROBERTS BRUCE LYNN
ROBERTS BRUCE LYNN
Application Number:
PCT/US2004/005251
Publication Date:
March 10, 2005
Filing Date:
February 23, 2004
Export Citation:
Assignee:
KERR MCGEE CHEMICAL LLC (US)
International Classes:
C01G23/07; C22B34/12; G01N21/33; G01N21/35; (IPC1-7): C01G23/07
Domestic Patent References:
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| WO2001002299A1 | 2001-01-11 | |||
| WO1998004500A1 | 1998-02-05 | |||
| WO2000054045A1 | 2000-09-14 |
Foreign References:
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