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AssigneeE. I. Du Pont de Nemours and Company
InventorThomas Shields Elkins
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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.
In a process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride, wherein the manufacture of titanium tetrachloride comprises the steps of feeding carbonaceous material, titanium bearing material, and chlorine, wherein at least one of these materials contains sulfur, to a fluidized bed reactor to form titanium tetrachloride and an exhaust gas stream comprising carbonyl sulfide, sulfur dioxide, carbon monoxide, carbon dioxide, and chlorine, the improvement comprising the steps of:
In a process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride, wherein the manufacture of titanium tetrachloride comprises the steps of feeding carbonaceous material, titanium bearing material, and chlorine, wherein at least one of these materials contains sulfur, to a fluidized bed reactor to form titanium tetrachloride and an exhaust gas stream comprising carbonyl sulfide, sulfur dioxide, carbon monoxide, carbon dioxide, and chlorine, the improvement comprising the steps of:
Dependencies are inferred from the claim text.