Process for hydrogenating highly unsaturated heavy hydrocarbon cuts
    22.
    发明授权
    Process for hydrogenating highly unsaturated heavy hydrocarbon cuts 失效
    氢化高度不饱和重烃馏分的方法

    公开(公告)号:US4019976A

    公开(公告)日:1977-04-26

    申请号:US569788

    申请日:1975-04-21

    CPC classification number: C10G45/50 B01J23/85 C10G65/08

    Abstract: Process for hydrogenating a highly unsaturated hydrocarbon cut, boiling above 200.degree. C under atmospheric pressure, comprising passing said cut successively over two catalysts, each of which contains an alumina carrier, (a) at least one molybdenum and/or tungsten compound and (b) at least one nickel and/or cobalt compound, the ratio b/a expressed in gram-atoms of metals, being from 1.5:1 to 10:1 for the first catalyst and from 0.1:1 to 1:1 for the second catalyst and the alumina carrier of the first catalyst having a heat of neutralization by ammonia absorption lower than 10 calories per gram under an ammonia pressure of 300 mmHg.

    Abstract translation: 在大气压下沸腾高于200℃的高度不饱和烃馏分的方法,包括将所述切割依次通过两个催化剂,每个催化剂含有氧化铝载体,(a)至少一种钼和/或钨化合物和(b )至少一种镍和/或钴化合物,对于第一催化剂,以金属的克原子表示的比率b / a为第一催化剂的1.5:1至10:1,对于第二催化剂为0.1:1至1:1 并且在氨压力为300mmHg下,第一催化剂的氧化铝载体具有通过氨吸收低于10卡路里/克的中和热。

    Process for producing gasoline with a low sulphur content
    25.
    发明授权
    Process for producing gasoline with a low sulphur content 有权
    生产硫含量低的汽油的方法

    公开(公告)号:US06334948B1

    公开(公告)日:2002-01-01

    申请号:US09443152

    申请日:1999-11-18

    CPC classification number: C10G65/16

    Abstract: A process for producing a gasoline with a low sulphur content comprises: separating a sulphur-containing gasoline into a light fraction and a heavy fraction, hydrodesulphurising the light gasoline on a nickel-based catalyst, hydrodesulphurising the heavy fraction on a catalyst comprising at least one group VIII metal and/or at least one group VIB metal, and mixing the desulphurised fractions.

    Abstract translation: 一种生产低硫含量的汽油的方法包括:将含硫汽油分离成轻馏分和重馏分,将轻汽油加氢脱硫在镍基催化剂上,对重馏分进行加氢脱硫,所述催化剂包含至少一种 VIII族金属和/或至少一种VIB族金属,并混合脱硫馏分。

    Process for the selective reduction to the content of benzene and light
unsaturated compounds in a hydrocarbon cut
    29.
    发明授权
    Process for the selective reduction to the content of benzene and light unsaturated compounds in a hydrocarbon cut 失效
    在烃切割中选择性还原苯和轻不饱和化合物的含量的方法

    公开(公告)号:US6048450A

    公开(公告)日:2000-04-11

    申请号:US774926

    申请日:1996-12-27

    CPC classification number: C10G65/08 C10G2400/02

    Abstract: A process for treating a feed comprising C.sub.5.sup.+ hydrocarbons and comprising at least one unsaturated C.sub.6.sup.+ compound including benzene, is such that the feed is treated in a distillation zone, associated with a hydrogenation zone, comprising at least one catalytic bed, in which the hydrogenation is carried out of unsaturated C.sub.6.sup.+ compounds contained in the feed, and whereof a charge for the hydrogenation step is removed at the height of a removal level and represents at least part of the liquid flowing in the distillation zone, and the effluent from the hydrogenation reaction zone is at least in part reintroduced into the distillation zone to ensure continuity of the distillation operation, the effluents at the top and bottom on the distillation zone being very depleted of unsaturated C.sub.6.sup.+ compounds. The effluent drawn off from the top of the distillation zone is treated in a zone for the isomerisation of C.sub.5 and/or C.sub.6 paraffins.

    Abstract translation: 用于处理包含C5 +烃并且包含至少一种包含苯的不饱和C 6 +化合物的进料的方法使得在与包含至少一个催化床的氢化区相关联的蒸馏区中处理进料,其中氢化是 由进料中含有的不饱和C6 +化合物进行,并且在去除水平的高度处除去氢化步骤的装料,并且代表在蒸馏区中流动的液体的至少一部分,以及来自氢化反应区的流出物 至少部分地重新引入蒸馏区以确保蒸馏操作的连续性,蒸馏区顶部和底部的流出物非常耗尽不饱和C6 +化合物。 从蒸馏区顶部排出的流出物在一个区域中进行处理,以使C5和/或C6链烷烃异构化。

    Para-xylene separation process comprising pretreatment by selective
hydrogenation and by activated clay
    30.
    发明授权
    Para-xylene separation process comprising pretreatment by selective hydrogenation and by activated clay 失效
    对二甲苯分离方法,包括通过选择性氢化和活性粘土进行预处理

    公开(公告)号:US6005156A

    公开(公告)日:1999-12-21

    申请号:US894408

    申请日:1998-01-27

    CPC classification number: C07C15/08 C07C7/005 C07C7/163 C07C2523/44 Y02P20/52

    Abstract: In a process for the separation of p-xylene from a feed to be treated containing a mixture of xylenes and olefinic impurities, at least a portion of the feed is circulated in an enrichment zone (14) to enrich a first fraction (15) in p-xylene and provide a second fraction (18) which is depleted in p-xylene. The second fraction is circulated in an isomerisation zone (19) and an isomerate (20) is recovered which is recycled to the enrichment zone. At least a portion of the feed to be treated, the isomerate, or a mixture thereof is circulated in at least one selective hydrogenation zone (3) to partially remove the olefinic impurities and thereafter in at least one clay tretment zone (8) to remove additional olefinic impurities. An effluent is recovered which is sent to the enrichment zone.

    Abstract translation: PCT No.PCT / FR96 / 00238 Sec。 371日期:1998年1月27日 102(e)日期1998年1月27日PCT提交1996年2月14日PCT公布。 公开号WO96 / 26170 日期1996年8月29日在从含有二甲苯和烯属杂质的混合物的待处理进料中分离对二甲苯的方法中,至少一部分进料在富集区(14)中循环,以富集第一 馏分(15)在对二甲苯中并提供耗尽对二甲苯的第二馏分(18)。 第二级分在异构化区(19)中循环,回收异构体(20),将异构化物(20)再循环至富集区。 待处理的进料的至少一部分,异构体或其混合物在至少一个选择性氢化区(3)中循环,以部分地除去烯属杂质,然后在至少一个粘土沉淀区(8)中除去 额外的烯属杂质。 回收的废水被送到浓缩区。

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