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    • 3. 发明授权
    • Lubricant production process
    • 润滑油生产过程
    • US4919788A
    • 1990-04-24
    • US260857
    • 1988-10-21
    • Nai Y. ChenWilliam E. GarwoodTracy J. HuangQuang N. LeStephen S. Wong
    • Nai Y. ChenWilliam E. GarwoodTracy J. HuangQuang N. LeStephen S. Wong
    • C10G45/64C10G65/04C10G67/04
    • C10G67/04C10G45/64C10G65/043
    • A process for producing lubricant oils of low pour point and high viscosity index by first carrying out a partial dewaxing of a lubricant base stock in an initial catalytic dewaxing operation, followed by a selective dewaxing step. The initial catalytic dewaxing step is carried out using a large pore, high silica zeolite dewaxing catalyst such as high silica Y or zeolite beta which dewaxes by isomerizing the waxy components of the base stock to less waxy brance chain isoparaffins but the severity of the operation is controlled so as to effect only a partial removal of the waxy components. Further removal of the waxy components is effected during the subsequent dewaxing step which is selective for the removal of the more waxy n-paraffin components, leaving the branched chain isoparaffins which contribute to a high VI in the product. The selective dewaxing step may be either a solvent, e.g. MEK dewaxing operation or a catalytic dewaxing using a highly shape selective zeolite such as ZSM-22 or ZSM-23. The severity of the initial catalytic dewaxing operation may be controlled so as to effect a net increase in the content of isoparaffins and because of the selective nature of the solvent dewaxing step, this increased isoparaffins concentration may be retained, producing a product of high VI. The pour point of the feedstock is preferably reduced during the initial catalytic dewaxing step to a value which is no lower than 10.degree. F. and preferably no lower than 20.degree. F., above the target pour point for the products. Generally, this will entail a reduction of at least 10.degree. F. and preferably at least 20.degree. F. in the pour point of the feed.
    • 首先在初始催化脱蜡操作中进行润滑剂原料的部分脱蜡,然后进行选择性脱蜡步骤,生产低倾点和高粘度指数的润滑油的方法。 初始催化脱蜡步骤使用大孔,高二氧化硅沸石脱蜡催化剂如高二氧化硅Y或沸石β进行,该脱蜡通过使基础油料的蜡质组分异构化成较少的蜡状分支链异链烷烃,但操作的严重性是 被控制以仅影响蜡组分的部分去除。 在随后的脱蜡步骤中进一步除去蜡状组分,该脱蜡步骤选择性地除去更多的蜡状正链烷烃组分,留下有助于产物中高VI的支链异链烷烃。 选择性脱蜡步骤可以是溶剂,例如 MEK脱蜡操作或使用ZSM-22或ZSM-23等高选择性沸石的催化脱蜡。 可以控制初始催化脱蜡操作的严重性,以便实现异链烷烃含量的净增加,并且由于溶剂脱蜡步骤的选择性,可以保留这种增加的异链烷烃浓度,从而产生高VI的产物。 原料的倾点优选在初始催化脱蜡步骤期间降低至不低于产物的目标倾点的10°F,优选不低于20°F的值。 通常,这将导致在进料的倾点下降至少10°F,优选至少降低20°F。
    • 6. 发明授权
    • Process for producing alkyl aromatic compounds
    • 烷基芳族化合物的制备方法
    • US4409412A
    • 1983-10-11
    • US423337
    • 1982-09-24
    • Werner O. HaagTracy J. Huang
    • Werner O. HaagTracy J. Huang
    • C07C2/86
    • C07C2/862C07C2529/40C07C2529/44C07C2529/46
    • A process for alkylating aromatic compounds wherein the product aromatics are provided with one or more alkyl groups possessing at least two carbon atoms is disclosed wherein starting aromatic compound(s) and an alkylating atent which is a mixture of hydrogen and/or a hydrogen-containing substance which provides hydrogen under process conditions and a carbon oxide, e.g., a mixture of syngas (hydrogen and carbon monoxide) are reacted at elevated temperature in the presence of an activated catalyst containing metal values selected from the group consisting of iron, cobalt, ruthenium, manganese, rhodium and osmium, and a zeolite having a constraint index of 12 or less, e.g., ZSM-5. The alkylated aromatics can be dealkylated by known and conventional means to provide olefin and the dealkylated aromatics can be recycled to the alkylation zone.
    • 公开了一种芳族化合物的烷基化方法,其中产物芳族化合物具有一个或多个具有至少两个碳原子的烷基,其中起始芳族化合物和烷基化剂是氢和/或含氢的混合物 在工艺条件下提供氢的物质和碳氧化物,例如合成气(氢气和一氧化碳)的混合物在升高的温度下在活性催化剂存在下反应,所述催化剂含有选自铁,钴,钌的金属值 ,锰,铑和锇以及具有12或更小约束指数的沸石,例如ZSM-5。 烷基化芳族化合物可以通过已知和常规方法脱烷基化以提供烯烃,并且脱烷基化的芳族化合物可以再循环到烷基化区。
    • 8. 发明授权
    • Dual function catalyst and isomerization therewith
    • 双功能催化剂及其异构化
    • US5028573A
    • 1991-07-02
    • US471462
    • 1990-01-29
    • Lawrence M. Brown, deceasedTracy J. Huang
    • Lawrence M. Brown, deceasedTracy J. Huang
    • B01J29/064B01J29/40C07C5/27C07C15/00
    • B01J29/40C07C5/2724
    • A dual function composite catalyst for isomerizing an isomerization feed containing an aromatic C.sub.8 mixture of ethyl benzene and xylene, comprises (a) a crystalline aluminosilicate zeolite having a low acid activity as measured by an alpha value of from 0.02 to 11, an average crystal size of not more than 0.4 microns for at least 50% by weight of the crystals, a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, a xylene sorption capacity greater than 1 gram per 100 grams of zeolite, and an ortho-xylene sorption time for 30 percent of said capacity less than 10 minutes, said sorption capacity and sorption time being measured at 120.degree. C. and a xylene pressure of 4.5.+-.0.8 mm of mercury, and (b) a supported metal of Group VIII of the Periodic Table having a high hydrogenation/dehydrogenation activity to provide the catalyst with a dehydrogenation activity of at least 10. The catalyst has an alpha value of 0.005 to 3.
    • 用于异构化异构化进料的双功能复合催化剂,其含有乙苯和二甲苯的芳族C 8混合物,包括(a)具有低酸活性的结晶硅铝酸盐沸石,其α值为0.02至11,平均晶体尺寸 对于至少50重量%的晶体,二氧化硅与氧化铝的比例至少约为12,约1到12的约束指数,每100克沸石的二甲苯吸附容量大于1克,不超过0.4微米 ,并且邻二甲苯吸附时间为所述容量的30%小于10分钟,所述吸附容量和吸附时间在120℃下测量,二甲苯压力为4.5 +/- 0.8mm汞柱,(b) 元素周期表第VIII族的负载金属具有高的氢化/脱氢活性,以使催化剂具有至少10的脱氢活性。该催化剂具有0.005至3的α值。