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    • 18. 发明授权
    • Process for making titanium dioxide
    • 制备二氧化钛的方法
    • US07182931B2
    • 2007-02-27
    • US10374266
    • 2003-02-25
    • Donald Theodore Turnbaugh, Jr.Bruce Lynn Roberts
    • Donald Theodore Turnbaugh, Jr.Bruce Lynn Roberts
    • C01G23/047
    • C01G23/07C22B34/1222C22B34/1227C22B34/1231G01N21/33G01N21/3504Y02P10/23
    • 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, analyzing the chlorinator tail gas for residual chlorine to control the step of reacting the titanium dioxide ore with chlorine, 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.
    • 一种通过使二氧化钛矿石与氯反应生成含四氯化钛的气流产生二氧化钛的改进方法,将四氯化钛从含有四氯化钛的气流中冷凝出来,产生氯化氢尾气,蒸发冷凝的四氯化钛,汽化钛 四氯化碳与氧气产生含有二氧化钛颗粒和氯的气流,将二氧化钛颗粒与含有二氧化钛颗粒和氯的气流分离,产生燃烧器尾气,分析氯化剂尾气残留氯以控制反应步骤 二氧化钛矿石与氯,分析燃烧器尾气为氧,以控制使缩合的四氯化钛与氧气反应的步骤。 改进之处是使用在线分析仪来分析残留氯(和/或氧气的燃烧器尾气)的氯化物尾气。