利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

97 条记录 (耗时 0.026 秒)

    Alkylation process using a catalyst having an increased selectivity for monoalkylation
    2.
    发明授权
    Alkylation process using a catalyst having an increased selectivity for monoalkylation 失效
    使用具有增加的单烷基化选择性的催化剂的烷基化方法

    公开(公告)号：US4876408A

    公开(公告)日：1989-10-24

    申请号：US251752

    申请日：1988-10-03

    申请人： Charles T. Ratcliffe ,  John W. Ward

    发明人： Charles T. Ratcliffe ,  John W. Ward

    IPC分类号： B01J21/18 ,  B01J29/08 ,  B01J37/00 ,  C07C2/66

    CPC分类号： B01J37/0018 ,  B01J21/18 ,  B01J29/084 ,  C07C2/66 ,  B01J2229/123 ,  B01J2229/34 ,  C07C2521/04 ,  C07C2529/08 ,  C07C2529/60 ,  C07C2529/70

    摘要： A process for treating a molecular sieve-containing alkylation catalyst to increase its selectivity for monoalkylation in which the alkylation catalyst is contacted with a feedstock comprising at least one organic compound under conditions such that a sufficient amount of carbonaceous material evenly deposits on the alkylation catalyst to substantially suppress its alkylation activity. The carbon-containing catalyst particles are then subjected to combustion by contacting them with a gaseous oxidizing agent at an elevated temperature to remove at least a portion of the carbonaceous material, preferably substantially all of the carbonaceous material, thereby increasing the selectivity of the catalyst for monoalkylation by at least about 1.0 percentage point. The resulting alkylation catalyst an be used to alkylate benzene and other aromatic compounds with ethylene, propylene or other olefins to produce high yields of ethylbenzene, cumene and other alkylated products. Preferably, the alkylation catalyst contains an ammonium-exchanged and steam stabilized Y zeolite.

    摘要翻译： 一种用于处理含分子筛的烷基化催化剂以提高其对单烷基化的选择性的方法，其中烷基化催化剂与包含至少一种有机化合物的原料接触，条件是使足够量的碳质材料均匀沉积在烷基化催化剂上， 基本上抑制其烷基化活性。 然后使含碳催化剂颗粒在高温下与气态氧化剂接触使其燃烧，以除去至少一部分含碳材料，优选基本上所有的碳质材料，从而提高催化剂对于 单烷基化至少约1.0个百分点。 所得到的烷基化催化剂用于使苯和其它芳族化合物与乙烯，丙烯或其它烯烃烷基化，以产生高产率的乙苯，枯烯和其它烷基化产物。 优选地，烷基化催化剂含有铵交换和蒸汽稳定的Y沸石。

    Process for producing a product hydrocarbon having a reduced content of normal paraffins
    3.
    发明授权
    Process for producing a product hydrocarbon having a reduced content of normal paraffins 失效
    生产正链烷烃含量降低的产物烃的方法

    公开(公告)号：US4743354A

    公开(公告)日：1988-05-10

    申请号：US916196

    申请日：1986-10-10

    申请人： John W. Ward

    发明人： John W. Ward

    IPC分类号： B01J29/06 ,  B01J23/85 ,  B01J29/035 ,  B01J29/04 ,  B01J29/08 ,  C10G45/64 ,  C10G47/16 ,  C10G65/04 ,  C10G65/12 ,  C10G73/38

    CPC分类号： B01J29/084 ,  C10G45/64 ,  C10G47/16 ,  C10G65/043 ,  C10G65/12

    摘要： A waxy hydrocarbon feedstock is converted into a product hydrocarbon of reduced normal paraffin content by either dewaxing or hydrodewaxing the feedstock in the presence a dewaxing or hydrodewaxing catalyst under conditions such that the normal paraffin content of the feedstock is reduced by selectively converting waxy paraffins into lower molecular weight hydrocarbons. At least a portion of the effluent from the dewaxing or hydrodewaxing zone is then passed to a hydrocracking zone where it is contacted with a hydrocracking catalyst in the presence of hydrogen under conditions such that a further reduction in the normal paraffin content is effected. When the desired product is a lube oil base stock, the overall conversion of components in the feed boiling above about 650.degree. F. to components boiling at or below about 650.degree. F. that takes palce in the dewaxing or hydrodewaxing step and the hydrocracking step combined is no more than about 20 volume percent, preferably no more than about 10 volume percent. When the desired product is a middle distillate, the overall conversion of feedstock constituents in the dewaxing or hydrodewaxing step and the hydrocracking step combined to components boiling below about 300.degree. F. is no more than about 25 volume percent, preferably no more than about 15 volume percent.

    摘要翻译： 通过在脱蜡或加氢脱蜡催化剂存在下进行脱蜡或加氢脱蜡的条件下将蜡质烃原料转化为具有降低的正链烷烃含量的产物烃，使得通过选择性地将蜡质链烷烃转化为较低的原料来降低原料的正常链烷烃含量 分子量烃。 然后将来自脱蜡或加氢脱蜡区的流出物的至少一部分通入加氢裂化区，在加氢裂化区中，在氢气存在下与加氢裂化催化剂接触，使得进一步降低正链烷烃含量。 当所需产品是润滑油基础油料时，在沸点高于约650°F的组分中的组分的总转化率为沸点在约650°F或低于约650°F的组分，其在脱蜡或加氢脱蜡步骤和加氢裂化步骤 组合不超过约20体积％，优选不超过约10体积％。 当所需产物是中间馏分时，在脱蜡或加氢脱蜡步骤中的原料成分的总转化率和加入到低于约300°F沸点的组分的加氢裂化步骤不超过约25体积％，优选不超过约15 体积百分比。

    Hydrocracking with rare earth-containing Y zeolite compositions
    5.
    发明授权
    Hydrocracking with rare earth-containing Y zeolite compositions 失效

    公开(公告)号：US4604187A

    公开(公告)日：1986-08-05

    申请号：US740537

    申请日：1985-06-03

    申请人： John W. Ward

    发明人： John W. Ward

    IPC分类号： B01J29/12 ,  C10G47/18 ,  C10G47/20 ,  C10G65/12

    CPC分类号： C10G65/12 ,  B01J29/126 ,  C10G47/18 ,  C10G47/20

    摘要： Y Zeolites are prepared with rare earth cations and Group VIII metal cations exchanged thereinto, such zeolites being especially useful in hydrocracking catalysts. The zeolites of the invention are prepared by exchanging a sodium Y zeolite with cations of one or more rare earth elements followed by a calcination, an ammonium ion exchange, and a Group VIII metal cation exchange. The resultant zeolite is not only highly active for catalytically promoting hydrocracking reactions but is also, after use in hydrocracking environments resulting in coke deposition, essentially completely regenerable by combustion of the coke.

    Desulfurization of hydrocarbons
    9.
    发明授权
    Desulfurization of hydrocarbons 失效
    碳氢化合物的脱硫

    公开(公告)号：US4336130A

    公开(公告)日：1982-06-22

    申请号：US211376

    申请日：1980-11-28

    申请人： J. Wayne Miller ,  John W. Ward

    发明人： J. Wayne Miller ,  John W. Ward

    IPC分类号： C10G25/00 ,  C10G29/04 ,  C10G29/06 ,  C10G61/06

    CPC分类号： C10G25/003 ,  C10G29/04 ,  C10G29/06 ,  C10G61/06

    摘要： A hydrocarbon feedstock containing organo-sulfur compounds, such as a naphtha containing mercaptans, is desulfurized by contact, under non-hydrogenative conditions, with a reduced catalytic absorbent comprising one or more nickel components and one or more platinum group metal promoters composited with a porous refractory oxide.

    摘要翻译： 含有有机硫化合物的烃原料，例如含有硫醇的石脑油，在非氢化条件下通过与包含一种或多种镍组分的还原催化吸收剂和一种或多种与多孔 难熔氧化物。