Catalytic conversion of polycyclic aromatics into xylenes
    4.
    发明授权
    Catalytic conversion of polycyclic aromatics into xylenes 有权
    多环芳烃催化转化成二甲苯

    公开(公告)号:US06972348B2

    公开(公告)日:2005-12-06

    申请号:US10807626

    申请日:2004-03-24

    IPC分类号: C07C4/24 C07C5/22 C07C6/12

    摘要: A catalyst, and a process for using the catalyst, that effectively converts and transalkylates indane and C10 and heavier polycyclic aromatics into C8 aromatics is herein disclosed. The catalyst comprises a solid-acid support such as mordenite plus a metal component such as rhenium. The catalyst provides excellent conversion of such heavy aromatic species as naphthalene, which is also observed by a decrease in the ending-boiling-point of a hydrocarbon stream passed over the catalyst. The same catalyst is also effective for transalkylation of lighter aromatics, thus yielding a valuable xylenes product stream out of the process.

    摘要翻译: 本文公开了一种催化剂和使用该催化剂的方法,其有效地将茚满和C 10 N和更重的多环芳烃转化和烷基化到C 8芳烷烃中。 催化剂包括固体酸载体如丝光沸石和金属组分如铼。 该催化剂提供了诸如萘之类的重芳族物质的极好的转化率,这也是通过在催化剂上通过的烃流的终沸点降低而观察到的。 相同的催化剂对于较轻的芳族化合物的烷基转移也是有效的,因此在工艺中产生有价值的二甲苯产物流。

    Process for the catalytic isomerization of light hydrocarbons
    5.
    发明授权
    Process for the catalytic isomerization of light hydrocarbons 失效
    轻烃催化异构化的方法

    公开(公告)号:US5233121A

    公开(公告)日:1993-08-03

    申请号:US925397

    申请日:1992-08-04

    申请人: Frank S. Modica

    发明人: Frank S. Modica

    IPC分类号: C07C5/27 C10G35/095

    CPC分类号: C10G35/095 C07C5/2791

    摘要: The present invention relates to a process for isomerizing a light paraffinic naphtha feedstock having a boiling range from about 50.degree. F. to about 210.degree. F. and containing at least 85 weight percent aliphatic hydrocarbon having 6 carbon atoms or less. The process comprises contacting the feedstock at isomerization conditions with an isomerization catalyst comprising a zeolite beta component.

    摘要翻译: 本发明涉及一种沸石范围为约50°F至约210°F并含有至少85%(重量)的具有6个或更少碳原子的脂族烃的轻石蜡石脑油原料异构化方法。 该方法包括在异构化条件下将原料与包含沸石β组分的异构化催化剂接触。

    Process for removing sulfur oxides from a gas
    6.
    发明授权
    Process for removing sulfur oxides from a gas 失效
    从气体中除去硫氧化物的方法

    公开(公告)号:US4381991A

    公开(公告)日:1983-05-03

    申请号:US288944

    申请日:1981-07-31

    IPC分类号: B01D53/50 C10G11/18 C10G11/04

    CPC分类号: B01D53/508 C10G11/18

    摘要: Sulfur oxides are removed from a gas by an absorbent comprising magnesium oxide in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 0.1 to about 30,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas comprising hydrogen sulfide by contacting the spent absorbent with a hydrocarbon in the presence of a hydrocarbon cracking catalyst at a temperature from about 375.degree. to about 900.degree. C. The absorbent can be circulated through a fluidized catalytic cracking process together with the hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone.

    摘要翻译: 通过包含氧化镁的吸收剂与至少一种选自镧,铈,镨,钐和镝的游离或组合的稀土金属从气体中除去硫氧化物,其中无机氧化物的重量比 或氧化物至稀土金属或金属为约0.1至约30,000。 通过在烃裂化催化剂存在下,在大约375°至大约900℃的温度下,使用废吸收剂与烃接触,将吸收的硫氧化物作为包含硫化氢的含硫气体回收。吸收剂可循环通过 流化催化裂化过程与烃裂化催化剂一起减少再生区的硫氧化物排放。

    Process for removing sulfur oxides from a gas
    10.
    发明授权
    Process for removing sulfur oxides from a gas 失效
    从气体中除去硫氧化物的方法

    公开(公告)号:US4405443A

    公开(公告)日:1983-09-20

    申请号:US363269

    申请日:1982-03-29

    摘要: Sulfur oxides are removed from a gas by an absorbent comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium, and calcium in association with yttrium or yttrium combined with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the ratio by weight of inorganic oxide or oxides to yttrium or yttrium combined with a rare earth metal or metals is from about 0.1 to about 30,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas by contacting the spent absorbent with a hydrocarbon in the presence of a hydrocarbon cracking catalyst at a temperature from about 375.degree. to about 900.degree. C. The absorbent can be circulated through a fluidized catalytic cracking process together with the hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone thereof.

    摘要翻译: 通过包含至少一种选自铝,镁,锌,钛和钙的氧化物与钇或钇的至少一种游离或组合的稀有金属的钇或钇的无机氧化物的吸收剂从气体中除去硫氧化物 选自镧,铈,镨,钐和镝的地球金属,其中与稀土金属或金属组合的无机氧化物或氧化物与钇或钇的重量比为约0.1至约30,000。 通过在烃裂化催化剂存在下,在大约375°至大约900℃的温度下将废吸收剂与烃接触,将吸收的硫氧化物作为含硫气体回收。吸收剂可以通过流化催化裂化 与烃裂解催化剂一起处理以减少其再生区的硫氧化物排放。