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    Process for producing titanium dioxide
    13.
    发明授权
    Process for producing titanium dioxide 有权
    二氧化钛生产工艺

    公开(公告)号：US07476378B2

    公开(公告)日：2009-01-13

    申请号：US11260058

    申请日：2005-10-27

    Applicant: Narayanan Sankara Subramanian ,  Richard P. Bernard ,  Yung-Hsing Samson Hsu ,  Charles David Musick ,  Kunle Ogunde ,  James Nelson Tilton

    Inventor： Narayanan Sankara Subramanian ,  Richard P. Bernard ,  Yung-Hsing Samson Hsu ,  Charles David Musick ,  Kunle Ogunde ,  James Nelson Tilton

    IPC: C01G23/00 ,  C01G23/047 ,  C01G23/07 ,  B01J21/06 ,  B01J37/07 ,  B01J37/12 ,  B01J37/14

    CPC classification number: C01G23/07 ,  C01G23/075 ,  C01P2004/61 ,  C09C1/3607

    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: a) providing a quantity of liquid titanium tetrahalide for reacting with an oxygen-containing gas; b) vaporizing a first portion of the liquid titanium tetrahalide and reacting the titanium tetrahalide vapor and the oxygen-containing gas, in a first stage of a reaction zone, the reaction zone temperature ranging from at least about 650° C.—to form a reaction product at least containing titanium dioxide and oxygen-containing gas and passing the reaction product, more typically in the vapor phase, to at least one additional stage of the reaction zone; and c) charging at least one additional portion of the liquid titanium tetrahalide to the at least one additional stage of the reaction zone to cool the titanium dioxide and to react with the oxygen-containing gas to form additional titanium dioxide. This process results in a high conversion to titanium dioxide and formation of titanium dioxide powders having improved particle size and size distribution.

    Abstract translation: 本公开涉及一种生产二氧化钛的方法，包括：a）提供一定数量的四卤化钛用于与含氧气体反应; b）蒸发液态四卤化钛的第一部分并使四卤化钛蒸气和含氧气体在反应区的第一阶段中反应，反应区温度为至少约650℃，以形成 反应产物至少含有二氧化钛和含氧气体，并将反应产物（通常在气相中）通到反应区的至少一个附加阶段; 和c）将至少另外一部分液体四卤化钛装入至该反应区的至少一个附加阶段以冷却二氧化钛并与含氧气体反应以形成另外的二氧化钛。 该方法导致二氧化钛的高转化率和具有改进的粒度和尺寸分布的二氧化钛粉末的形成。

    Process for controlling particle size and silica coverage in the preparation of titanium dioxide
    15.
    发明授权
    Process for controlling particle size and silica coverage in the preparation of titanium dioxide 有权
    在制备二氧化钛时控制粒径和二氧化硅覆盖的方法

    公开(公告)号：US09416246B2

    公开(公告)日：2016-08-16

    申请号：US13978271

    申请日：2012-01-06

    Applicant: Charles David Musick ,  Robert A Johns ,  Joseph J Zaher

    Inventor： Charles David Musick ,  Robert A Johns ,  Joseph J Zaher

    IPC: C08K3/22 ,  C01G23/07 ,  C09C1/36

    CPC classification number: C08K3/22 ,  C01G23/07 ,  C01P2002/52 ,  C01P2004/51 ,  C01P2004/84 ,  C09C1/3653

    Abstract: The present disclosure relates to a vapor phase process for producing a substantially anatase-free titanium dioxide pigment comprising reacting a vaporous titanium dioxide precursor and an oxygen containing gas in a reactor; and introducing a mixture of liquid silicon halide and liquid titanium dioxide precursor into the reactor at a point downstream of the addition of the vaporous titanium dioxide precursor, and the oxygen containing gas, and at a process temperature of about 1200° C. to about 1600° C. to produce titanium dioxide particles that are substantially encapsulated in silicon dioxide.

    Abstract translation: 本公开内容涉及用于生产基本上无锐钛型二氧化钛颜料的气相方法，其包括在反应器中使气态二氧化钛前体和含氧气体反应; 以及在加入气态二氧化钛前体和含氧气体的下游点，并且在约1200℃至约1600℃的过程温度下，将液体硅卤化物和液体二氧化钛前体的混合物引入反应器 以产生基本上包封在二氧化硅中的二氧化钛颗粒。

    PROCESS FOR PREPARING TITANIUM TETRACHLORIDE USING OFF GASES FROM A SILICA AND ZIRCON CARBO-CHLORINATION PROCESS
    18.
    发明申请
    PROCESS FOR PREPARING TITANIUM TETRACHLORIDE USING OFF GASES FROM A SILICA AND ZIRCON CARBO-CHLORINATION PROCESS 审中-公开
    使用二氧化硅和ZIRCON CARBO-CHLORINATION过程中的气体制备钛酸四丁酯的方法

    公开(公告)号：US20100196253A1

    公开(公告)日：2010-08-05

    申请号：US12668903

    申请日：2008-08-01

    Applicant: Timothy J. Becnel ,  Yung-Hsing Samson Hsu ,  Joseph J. Zaher ,  Charles David Musick

    Inventor： Timothy J. Becnel ,  Yung-Hsing Samson Hsu ,  Joseph J. Zaher ,  Charles David Musick

    IPC: C01G23/02

    CPC classification number: C01G23/022 ,  C01B33/10721 ,  C01G25/04

    Abstract: This disclosure relates to an improved process for preparing titanium tetrachloride comprising reacting ores comprising metal oxides with chlorine and a carbon compound at a temperature of about 900° C. to about 1300° C. to form the corresponding chlorides and off gas comprising carbon monoxide, wherein the metal in the metal oxide is selected from the group consisting of silicon, zircon and mixtures thereof, and wherein the carbon compound is selected from the group consisting of coke, charcoal, silicon carbide and mixtures thereof; and reacting titanium dioxide with a stream comprising off gases formed in the previous step to form titanium tetrachloride and carbon dioxide.

    Abstract translation: 本公开涉及一种改进的制备四氯化钛的方法，其包括在约900℃至约1300℃的温度下使包含金属氧化物的矿石与氯和碳化合物反应以形成相应的氯化物和包含一氧化碳的废气， 其中所述金属氧化物中的金属选自硅，锆石及其混合物，并且其中所述碳化合物选自焦炭，木炭，碳化硅及其混合物; 并使二氧化钛与包含前述步骤中形成的废气的物流反应形成四氯化钛和二氧化碳。

    Process for making titanium dioxide
    19.
    发明授权
    Process for making titanium dioxide 有权
    制备二氧化钛的方法

    公开(公告)号：US07638113B2

    公开(公告)日：2009-12-29

    申请号：US11546764

    申请日：2006-10-12

    Applicant: Robert E Bucher, Jr. ,  James Timothy Cronin ,  Yung-Hsing Samson Hsu ,  Charles David Musick ,  Kunle Ogunde ,  Robert J. Rossi ,  Barbara A. Kirsch

    Inventor： Robert E Bucher, Jr. ,  James Timothy Cronin ,  Yung-Hsing Samson Hsu ,  Charles David Musick ,  Kunle Ogunde ,  Robert J. Rossi ,  Barbara A. Kirsch

    IPC: C01G23/047

    CPC classification number: C01G23/07 ,  C01P2006/80 ,  C09C1/3661

    Abstract: The disclosure relates to a process for making titanium dioxide, comprising: reacting titanium tetrachloride with oxygen by contacting the titanium tetrachloride with the oxygen in a vapor phase reactor under mixing conditions and at an elevated temperature to form a gaseous product stream containing titanium dioxide; separating the titanium dioxide from the gaseous product stream to form a process stream; analyzing the process stream to detect a concentration of titanium tetrachloride in the process stream; comparing the concentration of titanium tetrachloride detected in the process stream to an aim point concentration; and modifying the oxidation conditions to restore or maintain the concentration of titanium tetrachloride in the process stream at the aim point. In one embodiment, the process further comprises contacting the gaseous product stream with silicon tetrachloride under mixing conditions and at an elevated temperature to at least partially encapsulate the titanium dioxide with a silicon-containing compound and separating the at least partially encapsulated titanium dioxide from the gaseous product stream and analyzing the process stream to detect a concentration silicon tetrachloride for comparison to a silicon tetrachloride aim point concentration so that the conditions for silicon tetrachloride contacting can be modified to restore or maintain the concentration of silicon tetrachloride in the process stream.

    Abstract translation: 本公开涉及一种制备二氧化钛的方法，包括：在混合条件和升高的温度下，在气相反应器中使四氯化钛与氧接触使四氯化钛与氧反应形成含有二氧化钛的气态产物流; 将二氧化钛与气态产物流分离以形成工艺流; 分析工艺流以检测工艺流中四氯化钛的浓度; 将在工艺流中检测到的四氯化钛的浓度与目标浓度进行比较; 并修改氧化条件以恢复或维持目标点处理物流中四氯化钛的浓度。 在一个实施方案中，该方法还包括在混合条件下和在升高的温度下使气体产物流与四氯化硅接触以至少部分地将二氧化钛与含硅化合物包封，并将至少部分包封的二氧化钛与气体 产物流并分析工艺流以检测四氯化硅浓度以与四氯化硅目标浓度进行比较，从而可以改变四氯化硅接触的条件以恢复或维持工艺流中四氯化硅的浓度。

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