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    Phosphor manufacturing process employing auto feedback to control product characteristics
    45.
    发明授权
    Phosphor manufacturing process employing auto feedback to control product characteristics 失效

    公开(公告)号：US6004480A

    公开(公告)日：1999-12-21

    申请号：US740873

    申请日：1996-11-04

    申请人： Surjit S. Chadha

    发明人： Surjit S. Chadha

    IPC分类号： B01J8/24 ,  B01J19/00 ,  B01J19/12 ,  C09K11/08 ,  B01J8/15 ,  B01J8/00

    CPC分类号： B01J8/1809 ,  B01J19/0006 ,  B01J19/126 ,  C09K11/08 ,  B01J2208/00442 ,  B01J2208/0053 ,  B01J2208/00557

    摘要： A continuous automated process is provided for manufacturing a phosphor product having controlled particle size characteristics and enhanced luminescent performance characteristics for use in a luminescent display. A precursor host lattice solution, a precursor dopant solution and reagent solution are initially selected as the starting materials for the phosphor product and are mixed together to produce a liquid starting material mixture. The mixture is conveyed to a microwave reactor and heated therein in a first heating stage by subjecting the mixture to microwaves at a predetermined frequency for a time sufficient to convert the starting material mixture to a precursor complex. The precursor complex is conveyed to a fluidized bed reactor and heated therein in a second heating stage by a hot fluidizing gas for a time and at a temperature sufficient to convert the precursor complex to the phosphor product in particulate form. The instantaneous particle size characteristics of the phosphor product are determined and transmitted to an autofeedback controller that adjusts the microwave frequency and reactor residence time of the first heating stage in response to the particle size data, thereby automatically tailoring the specific particle size characteristics of the phosphor product to the requirements of the practitioner. The instantaneous photoluminescent characteristics of the phosphor product are also determined and transmitted to another autofeedback controller that adjusts the amount of the dopant precursor solution fed to the starting material mixture in response to the photoluminescent data, thereby automatically tailoring the specific photoluminescent characteristics of the phosphor product to the requirements of the practitioner. In an alternate embodiment the precursor complex is retained in the microwave reactor for the second heating stage, rather than performing the second heating stage in the fluidized bed reactor.

    Single riser fluidized catalytic cracking process utilizing hydrogen and carbon-hydrogen contributing fragments
    47.
    发明授权
    Single riser fluidized catalytic cracking process utilizing hydrogen and carbon-hydrogen contributing fragments 失效
    使用氢和碳氢贡献片段的单提升流化催化裂解方法

    公开(公告)号：US4802971A

    公开(公告)日：1989-02-07

    申请号：US144708

    申请日：1988-01-14

    申请人： Joseph A. Herbst ,  Hartley Owen ,  Paul H. Schipper

    发明人： Joseph A. Herbst ,  Hartley Owen ,  Paul H. Schipper

    IPC分类号： B01J29/08 ,  B01J29/40 ,  B01J29/80 ,  C10G11/18 ,  C10G51/00 ,  C10G51/04 ,  C10G51/06

    CPC分类号： C10G11/18 ,  B01J29/80 ,  C10G51/00 ,  B01J2208/00283 ,  B01J2208/00442 ,  B01J2208/0053 ,  B01J29/084 ,  B01J29/40

    摘要： A catalytic cracking process is disclosed which comprises:(a) thermally and/or catalytically cracking a hydrogen-rich hydrocarbon feed in the lower region of a riser reactor in the presence of a catalyst composition comprising a first catalyst component, and, optionally, a second catalyst component, said first catalyst component being an amorphous cracking catalyst and/or large pore crystalline cracking catalyst, said second catalyst component being a shape selective medium pore crystalline silicate zeolite catalyst, to provide a gasiform material contributing hydrogen species and/or carbon-hydrogen fragments; and,(b) catalytically cracking a thermally treated heavy hydrocarbon feed in a higher region of the riser in the presence of said catalyst composition and gasiform material to provide gasoline boiling range material in increased yield and/or of higher quality.

    摘要翻译： 公开了一种催化裂解方法，其包括：（a）在提升管反应器的下部区域中存在催化剂组合物的情况下，热和/或催化裂解富含烃的烃进料，所述催化剂组合物包含第一催化剂组分，和任选的 第二催化剂组分，所述第一催化剂组分是无定形裂解催化剂和/或大孔结晶裂解催化剂，所述第二催化剂组分是形状选择性中孔结晶硅酸盐沸石催化剂，以提供贡献氢物质和/或碳 - 氢碎片 和（b）在所述催化剂组合物和气态物质的存在下，在提升管的较高区域催化裂解热处理的重烃进料，以提供更高的产率和/或更高质量的汽油沸程的材料。