Production of low sulfur distillates
    6.
    发明授权
    Production of low sulfur distillates 有权
    生产低硫馏分

    公开(公告)号:US07435335B1

    公开(公告)日:2008-10-14

    申请号:US09553107

    申请日:2000-04-20

    IPC分类号: C10G45/00 C10G45/44

    CPC分类号: C10G65/12

    摘要: A process for hydroprocessing a distillate stream to produce a stream exceptionally low in sulfur, with total aromatics and polynuclear aromatics being moderately reduced. A distillate stream is hydrodesulfurized in a first hydrodesulfurization stage. The product stream thereof is passed to a first separation stage wherein a vapor phase product stream and a liquid product stream are produced. The liquid phase product stream is passed to a second hydrodesulfurization stage and the product stream thereof is passed to a second separation stage wherein a vapor phase product stream and a liquid product stream low in sulfur are produced. At least a portion of the vapor product stream from said second separation stage can be cascaded to the first hydrodesulfurization stage.

    摘要翻译: 用于加氢处理馏出物流以产生异常低硫的流的方法,其中芳族化合物和多环芳烃被适度地还原。 馏出物流在第一加氢脱硫阶段加氢脱硫。 其产物流被送到第一分离阶段,其中产生气相产物流和液体产物流。 将液相产物流送至第二加氢脱硫阶段,将其产物流送至第二分离阶段,其中产生气相产物流和硫含量低的液体产物流。 来自所述第二分离级的至少一部分蒸汽产物流可以级联到第一加氢脱硫阶段。

    Process for recovering oil from tar sands
    9.
    发明授权
    Process for recovering oil from tar sands 失效
    从焦油砂中回收油的工艺

    公开(公告)号:US5320746A

    公开(公告)日:1994-06-14

    申请号:US608130

    申请日:1990-11-01

    IPC分类号: C10G1/00 C10G1/04

    CPC分类号: C10G1/047 C10G1/002

    摘要: A process for recovering oil from tar sands by subjecting the tar sands to aqueous extraction to produce a bitumen-rich layer containing bitumen, water and solids and a bitumen-lean layer containing relatively less bitumen and relatively more water and solids. The solids present in the bitumen-lean layer contain a substantial portion of finely divided clay having adhered organic matter. The clay solids are retained with the bitumen from the bitumen-lean layer and the bitumen-clay mixture is pyrolyzed. Pyrolysis of the bitumen-lean layer containing clay having adhered organic matter reduces the volume of aqueous tailings which would otherwise be produced and also results in increased hydrocarbon yields.

    摘要翻译: 通过对焦油砂进行含水萃取以产生含有沥青,水和固体的沥青富含层以及含有相对较少的沥青和相对较多的水和固体的沥青贫层,从沥青砂中回收油的方法。 存在于贫沥青层中的固体含有大部分具有粘附有机物质的细碎粘土。 粘土固体与贫沥青层的沥青一起保留,沥青 - 粘土混合物被热解。 含有附着有机物质的含有粘土的贫沥青层的热解减少了否则将产生的含水尾矿的体积,并且还导致增加的烃产率。

    Passivation of metal contaminants in cat cracking
    10.
    发明授权
    Passivation of metal contaminants in cat cracking 失效
    猫裂纹中金属污染物的钝化

    公开(公告)号:US4504380A

    公开(公告)日:1985-03-12

    申请号:US525826

    申请日:1983-08-23

    IPC分类号: C10G11/04 C10G11/18 C10G11/00

    摘要: A method for passivating metal contaminants present in a hydrocarbon feedstock which become deposited on cracking catalyst is described. The method is directed at passing the cracking catalyst through a passivation zone having a reducing atmosphere maintained at an elevated temperature by the introduction of a process reducing gas. The unsaturated hydrocarbon content of the reducing gas is decreased prior to the introduction of the process reducing gas into the passivation zone to thereby lower the rate of coke formation. In a preferred embodiment process reducing gas is passed through a hydrogenation zone adapted to hydrogenate an unsaturated hydrocarbon present in the process reducing gas prior to the process reducing gas being added to the passivation zone.

    摘要翻译: 描述了一种钝化沉积在裂化催化剂上的烃原料中存在的金属污染物的方法。 该方法涉及通过引入工艺还原气体使裂化催化剂通过具有保持在高温下的还原气氛的钝化区。 在将工艺还原气体引入钝化区之前,还原气体的不饱和烃含量降低,从而降低焦炭形成速率。 在一个优选的实施方案中,还原气体通过适于在工艺中存在的不饱和烃氢化的氢化区,还原气体在还原气体被加入钝化区之前。