E.i. Dupont De Nemours and Company

Thomas Shields Elkins

Lisa Edith Helberg

James Timothy Cronin

Angela Ruth Strzelecki

Hans Hellmut Glaeser

A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.

Method for cleaning in-process sensors

System and method for cleaning in-process sensors

The present invention is a process for controlling, at an aim point, the passivation of aluminum chloride in the chlorinator discharge stream in a process for making titanium tetrachloride.

Process for controlling the passivation of aluminum chloride formed in the chlorination of titanium-containing ores

This invention relates to a process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride, wherein an exhaust gas stream comprising carbonyl sulfide, sulfur dioxide, carbon monoxide, carbon dioxide, and chlorine is formed. In the process, the exhaust gas stream is first analyzed to determine the analyzed concentration of carbonyl sulfide (or concentration ratio of carbonyl sulfide to sulfur dioxide), the desired concentration of carbonyl sulfide (or concentration ratio of carbonyl sulfide to sulfur dioxide) in the exhaust gas stream is determined, and the difference between the analyzed concentration of carbonyl sulfide (or concentration ratio of carbonyl sulfide to sulfur dioxide) and the desired concentration of carbonyl sulfide (or concentration ratio of carbonyl sulfide to sulfur dioxide) in the exhaust gas stream is then calculated. A signal is generated which corresponds to this difference and this signal provides a feedback response to the fluidized bed reactor for controlling the temperature of the fluidized bed reactor.

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Waverly, TN, United States of America

Thomas Shields Elkins