Process for dealkylating aromatic hydrocarbons in the presence of steam
    41.
    发明授权
    Process for dealkylating aromatic hydrocarbons in the presence of steam 失效
    在蒸汽存在下使芳烃脱烷基化的方法

    公开(公告)号:US4381415A

    公开(公告)日:1983-04-26

    申请号:US368177

    申请日:1982-04-14

    摘要: Catalyst for dealkylating, in the presence of steam, a hydrocarbon charge, obtained for example from a catalytic reforming unit or from a unit for the production of aromatic hydrocarbons, and containing at least one alkylaromatic hydrocarbon such as toluene or a xylene, said catalyst containing an alumina carrier of a specific surface higher than 50 m.sup.2 /g and, by weight with respect to the catalyst, from 0.1 to 2% of rhodium, from 0.05 to 2% of at least one metal selected from copper, silver and gold, from 0.05 to 2% of rhenium and from 0.02 to 5% of at least one additional metal selected from lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium and uranium.

    摘要翻译: 在蒸汽存在下,使烷基化的催化剂,例如从催化重整单元获得的烃装料或用于生产芳族烃的单元,并含有至少一种烷基芳烃如甲苯或二甲苯,所述催化剂含有 比表面积高于50m2 / g的氧化铝载体,相对于催化剂的重量,0.1-2%的铑,0.05-2%的至少一种选自铜,银和金的金属,来自 0.05至2%的铼和0.02至5%的至少一种选自锂,钠,钾,铷,铯,铍,镁,钙,锶,钡和铀的另外的金属。

    Process for the production of purified water and hydrocarbons from fossil resources
    45.
    发明授权
    Process for the production of purified water and hydrocarbons from fossil resources 失效
    从化石资源生产净化水和碳氢化合物的过程

    公开(公告)号:US06462097B1

    公开(公告)日:2002-10-08

    申请号:US09822409

    申请日:2001-04-02

    IPC分类号: C07C2700

    摘要: A process for the production of purified water and hydrocarbons comprising at least one stage of separation of the water and hydrocarbons formed during a Fischer-Tropsch synthesis, at least one stage of purification of the separated water by bringing it into contact with at least one adsorbent selected from the group consisting of: the active carbons, clays which are hydrophobic or rendered hydrophobic, and zeolites which are hydrophobic or rendered hydrophobic. This process may optionally include a stripping stage before the adsorption step.

    摘要翻译: 一种用于生产净化水和烃的方法,包括在费 - 托合成期间形成的水和烃的至少一个阶段的分离,至少一个阶段通过使分离的水与至少一种吸附剂 选自:活性炭,疏水性或疏水性的粘土和疏水性或疏水性的沸石。 该方法可任选地包括在吸附步骤之前的汽提阶段。

    Process for reducing the benzene content of petrols
    46.
    发明授权
    Process for reducing the benzene content of petrols 失效
    降低汽油苯含量的方法

    公开(公告)号:US5534658A

    公开(公告)日:1996-07-09

    申请号:US477588

    申请日:1995-06-07

    CPC分类号: B01J23/74 B01J23/40 C10G45/60

    摘要: The invention concerns a process for reducing the benzene content of petrol fractions and isomerizing paraffins in the presence of an isomerization catalyst comprising 4 to 15% of at least one halogen and at least one metal from group VIII deposited on a support composed of a mixture of specific proportions of eta alumina and gamma alumina, in which isomerization is carried out on a mixture of a) a feed with the following composition by weight: 40% to 80% of paraffins, 0.5% to 7% of cyclic hydrocarbons and 6% to 45% of aromatics, and with a maximum distillation temperature of between 70.degree. C. and 90.degree. C., b) a C.sub.5 -C.sub.6 cut which is generally a straight run cut, and c) a chlorine-containing compound providing a concentration of 50-5000 ppm of chlorine in the mixture.

    摘要翻译: 本发明涉及一种在含有4至15%的至少一种卤素和至少一种VIII族金属的异构化催化剂存在下降低汽油馏分的苯含量并沉积在载体上的方法,所述载体由 特殊比例的ηa氧化铝和γ氧化铝,其中异构化在a)具有以下重量组成的进料的混合物上进行:40%至80%的链烷烃,0.5%至7%的环状烃和6% 45%的芳族化合物,最高蒸馏温度在70℃至90℃之间,b)一般为直线切割的C5-C6馏分,和c)提供浓度为 混合物中为50-5000ppm的氯。