Wax hydroisomerization process
    2.
    发明授权
    Wax hydroisomerization process 失效
    蜡加氢异构化工艺

    公开(公告)号:US5885438A

    公开(公告)日:1999-03-23

    申请号:US623084

    申请日:1996-03-28

    CPC分类号: C10G45/64 C10G2400/10

    摘要: This invention discloses a process for producing a high Viscosity Index lubricant having a VI of at least 125 from a waxy hydrocarbon feed having a wax content of at least 40 wt %. The process comprises catalytically dewaxing waxy paraffins present in the feed by isomerization in the presence of hydrogen and in the presence of a low acidity large pore zeolite isomerization catalyst. This catalyst has a ratio of SiO.sub.2 /Al.sub.2 O.sub.3, as synthesized, of at least 50:1, wherein the catalyst is prepared in the absence of boron. The alpha value of the catalyst is no greater than 20. The catalyst comprises a noble metal hydroisomerization catalyst such as Pt. The feed may be hydrocracked prior to dewaxing with the large pore zeolite. The effluent of the process may also be further dewaxed by either solvent or catalytic means in order to achieve target pour point.

    摘要翻译: 本发明公开了一种由具有至少40重量%蜡含量的蜡质烃原料生产VI至少为125的高粘度指数润滑剂的方法。 该方法包括通过异构化在氢气存在下和在低酸性大孔沸石异构化催化剂的存在下将存在于进料中的蜡状链烷烃催化脱蜡。 该催化剂具有至少50:1的合成的SiO 2 / Al 2 O 3的比例,其中在不存在硼的情况下制备催化剂。 催化剂的α值不大于20.催化剂包含贵金属加氢异构化催化剂如Pt。 在用大孔沸石脱蜡之前,可以将进料加氢裂化。 该方法的流出物还可以通过溶剂或催化装置进一步脱蜡,以达到目标倾点。

    Benzene conversion in an improved gasoline upgrading process
    3.
    发明授权
    Benzene conversion in an improved gasoline upgrading process 失效
    改良汽油升级过程中苯转化

    公开(公告)号:US5865987A

    公开(公告)日:1999-02-02

    申请号:US862229

    申请日:1997-05-23

    摘要: Low sulfur gasoline is produced from an olefinic, cracked, sulfur-containing naphtha by treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5 to crack low octane paraffins and olefins under mild conditions with limited aromatization of olefins and naphthenes. A benzene-rich co-feed is co-processed with the naphtha to reduce the benzene levels in the co-feed by alkylation. This initial processing step is followed by hydrodesulfurization over a hydrotreating catalyst such as CoMo on alumina. In addition to reducing benzene levels in the combined feeds, the initial treatment over the acidic catalyst removes the olefins which would otherwise be saturated in the hydrodesulfurization, consuming hydrogen and lowering product octane, and converts them to compounds which make a positive contribution to octane. Overall liquid yield is high, typically at least 90 percent or higher. Product aromatics are typically increased by no more than 25 weight percent relative to the combined feeds and may be lower than the feed.

    摘要翻译: 通过在酸性催化剂,优选中等孔径沸石如ZSM-5上处理,通过烯烃,裂化的含硫石脑油生产低硫汽油,以在烯烃和环烷烃的芳构化有限的温和条件下裂解低辛烷值链烷烃和烯烃 。 将富含苯的共同进料与石脑油共同处理以通过烷基化降低共进料中的苯含量。 该初始加工步骤之后是在加氢处理催化剂如氧化铝上的CoMo上进行加氢脱硫。 除了降低组合进料中的苯含量之外,对酸性催化剂的初始处理除去在加氢脱硫中会饱和的烯烃,消耗氢气和降低产物辛烷,并将其转化成对辛烷有正贡献的化合物。 总液体产率高,通常至少为90%或更高。 产物芳族化合物通常相对于组合的进料增加不超过25重量%,并且可以低于进料。

    Production of high viscosity index lubricants
    4.
    发明授权
    Production of high viscosity index lubricants 失效
    生产高粘度指数润滑剂

    公开(公告)号:US5643440A

    公开(公告)日:1997-07-01

    申请号:US350556

    申请日:1994-12-07

    摘要: Petroleum wax feeds having a low oil content are converted to high viscosity index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to lube range products of between generally 30 and 40 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 800 psig using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity zeolite beta catalyst. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig. The second stage catalyst is preferably a noble metal containing zeolite beta catalyst. The second stage is carried out at relatively low temperature, typically from 600.degree. to 650.degree. F. A final dewaxing step to target pour point may be used.

    摘要翻译: 具有低油含量的石油蜡进料通过两步加氢裂化加氢异构化方法转化为高粘度指数润滑剂,其中蜡进料在温和条件下首先进行加氢裂化,转化为通常为30至40的润滑油产品 饲料的重量百分比。 加氢裂化在至少800psig的氢气压力下进行,使用优选去除初始进料中存在的芳族组分的无定形催化剂。 然后使用低酸度沸石β催化剂在第二步骤中对加氢裂化的流出物进行加氢异构化。 第二阶段可以通过将第一阶段产品级联到第二阶段或通常为200至1000psig的较低压力下在高压下操作。 第二阶段催化剂优选为含有沸石β催化剂的贵金属。 第二阶段在相对较低的温度下进行,通常为600至650°F。可以使用目标倾点的最终脱蜡步骤。

    Wax hydroisomerization process employing a boron-free catalyst
    6.
    发明授权
    Wax hydroisomerization process employing a boron-free catalyst 失效
    使用无硼催化剂的蜡加氢异构化方法

    公开(公告)号:US5976351A

    公开(公告)日:1999-11-02

    申请号:US623036

    申请日:1996-03-28

    IPC分类号: C10G45/64 C10G65/04 C10G65/12

    CPC分类号: C10G45/64 C10G2400/10

    摘要: This invention discloses a process for producing a high Viscosity Index lubricant having a VI of at least 125 from a waxy hydrocarbon feed having a wax content of at least 40 wt %. The process comprises catalytically dewaxing waxy paraffins present in the feed by isomerization in the presence of hydrogen and in the presence of a low acidity large pore zeolite isomerization catalyst. This catalyst has a ratio of SiO.sub.2 /Al.sub.2 O.sub.3, as synthesized, of at least 50:1, and an alpha value of not greater than 20, wherein the catalyst is prepared in the absence of boron. The catalyst further comprises a noble metal hydrogenation component. The feed may be hydrocracked prior to dewaxing with the large pore zeolite. The feed may be solvent dewaxed prior to isomerization. The effluent of the isomerization step may also be further dewaxed by either solvent or catalytic means in order to achieve target pour point.

    摘要翻译: 本发明公开了一种由具有至少40重量%蜡含量的蜡质烃原料生产VI至少为125的高粘度指数润滑剂的方法。 该方法包括通过异构化在氢气存在下和在低酸性大孔沸石异构化催化剂的存在下将存在于进料中的蜡状链烷烃催化脱蜡。 该催化剂具有至少50:1的合成的SiO 2 / Al 2 O 3和不大于20的α值,其中催化剂在不存在硼的情况下制备。 催化剂还包含贵金属氢化组分。 在用大孔沸石脱蜡之前,可以将进料加氢裂化。 进料可以在异构化之前进行溶剂脱蜡。 异构化步骤的流出物还可以通过溶剂或催化方法进一步脱蜡,以达到目标倾点。

    Redispersion of agglomerated noble metals on zeolite catalysts
    8.
    发明授权
    Redispersion of agglomerated noble metals on zeolite catalysts 失效
    附聚贵金属在沸石催化剂上的再分散

    公开(公告)号:US4657874A

    公开(公告)日:1987-04-14

    申请号:US819074

    申请日:1986-01-15

    摘要: A process is described for rejuvenation of a deactivated highly siliceous noble metal-containing zeolite catalyst having a framework silica to alumina ratio of at least about 20 which contains agglomerated noble metal in its deactivated state. The process comprises redispersing the noble metals associated with the deactivated catalyst by contacting the catalyst with a stream of inert gas containing molecular chlorine, water and optionally, oxygen, a temperatures ranging from about 150.degree. to about 450.degree. C., a partial pressure of chlorine of from about 6 to about 15 Torr and a ratio of partial pressure of water to partial pressure of chlorine of from about 0.01 to about 2 for a period of time sufficient to achieve redispersion; purging said catalyst with an inert gas; and reducing said purged catalyst in a stream of hydrogen at a temperature ranging from about 140.degree. C. to 550.degree. C.

    摘要翻译: 描述了一种用于使具有至少约20的骨架二氧化硅与氧化铝比的失活的高含硅含贵金属的沸石催化剂再生的方法,其含有处于其失活状态的附聚的贵金属。 该方法包括通过使催化剂与含有分子氯,水和任选的氧的惰性气体流接触来将与失活的催化剂相关联的贵金属再分散,温度范围为约150℃至约450℃, 约6至约15托的氯,水的分压与氯的分压的比例为约0.01至约2,持续足以实现再分散的时间; 用惰性气体吹扫所述催化剂; 并在约140℃至550℃的温度范围内将氢气流中的所述吹扫的催化剂还原。

    Apparatus and method for adsorption and desorption studies, particularly
for characterization of catalysts
    10.
    发明授权
    Apparatus and method for adsorption and desorption studies, particularly for characterization of catalysts 失效
    用于吸附和解吸研究的装置和方法,特别是催化剂的表征

    公开(公告)号:US4762010A

    公开(公告)日:1988-08-09

    申请号:US33150

    申请日:1987-04-02

    IPC分类号: G01N15/08

    摘要: A sample is disposed in a sample chamber and is connected by a flow restrictor or "leak" to a bulb of known volume. In adsorption studies, an on/off valve is opened, allowing gas to flow from the bulb into the sample chamber. The leak controls the rate of flow to be less than the equilibrium rate of adsorption/desorption of gas with respect to the sample, such that the pressure in the sample chamber at all times is an equilibrium value. The pressure in the bulb and in the sample chamber are both measured repetitively. The change in pressure in the bulb provides an indication of the net amount of gas admitted to the sample chamber. This quantity together with the change in pressure in the sample chamber can be used to provide an indication of the amount of gas which is adsorbed onto the sample. In desorption studies the bulb is evacuated relative to the sample chamber. The on/off valve is opened to allow gas to flow from the sample chamber into the bulb at a rate controlled by the leak to be less than the equilibrium rate of adsorption/desorption such that the pressure within the sample chamber is at all times an equilibrium value. Points on the adsorption and desorption isotherms can thus be determined continually.

    摘要翻译: 样品设置在样品室中,并通过限流器或“泄漏”连接到已知体积的灯泡。 在吸附研究中,打开/关闭阀,允许气体从灯泡流入样品室。 泄漏控制流速小于气体相对于样品的平衡吸附/解吸速率,使得样品室中的压力始终为平衡值。 灯泡和样品室中的压力都被重复测量。 灯泡中的压力变化提供了进入样品室的净气量的指示。 该量与样品室中的压力变化一起可用于提供吸附到样品上的气体量的指示。 在解吸研究中,灯泡相对于样品室抽真空。 开/关阀打开以允许气体以由泄漏控制的速率从样品室流入灯泡以小于平衡吸附/解吸速率,使得样品室内的压力始终为 平衡值。 因此可以连续地确定吸附和解吸等温线上的点。