Process for the isomerization of paraffins
    25.
    发明授权
    Process for the isomerization of paraffins 失效
    石蜡异构化方法

    公开(公告)号:US5905181A

    公开(公告)日:1999-05-18

    申请号:US998930

    申请日:1997-12-29

    IPC分类号: C07C5/27 C07C5/13

    摘要: A paraffin isomerization process is described and claimed. The process involves contacting the paraffins with an isomerization catalyst at isomerization conditions. Additionally, the process requires the injection of a nitrogen containing compound such as an amine, e.g., t-butylamine, and raising the operating temperature by about 20.degree. C. to about 150.degree. C. The effect of these modifications is to provide improved selectivity and sulfur resistance to the catalyst.

    摘要翻译: 链烷烃异构化方法被描述和要求保护。 该方法包括在异构化条件下使链烷烃与异构化催化剂接触。 此外,该方法需要注入含氮化合物如胺,例如叔丁胺,并将操作温度提高约20℃至约150℃。这些修饰的效果是提供改善的选择性 和对催化剂的耐硫性。

    Upgrading of cyclic naphthas
    27.
    发明授权
    Upgrading of cyclic naphthas 失效
    循环石脑油的升级

    公开(公告)号:US5770042A

    公开(公告)日:1998-06-23

    申请号:US550694

    申请日:1995-10-31

    IPC分类号: C10G59/02 C10G35/085

    CPC分类号: C10G59/02 Y10S585/94

    摘要: A process combination is disclosed to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. A naphtha feedstock is subjected to ring cleavage to convert naphthenes to paraffins using a nonacidic catalyst followed by isomerization of paraffins to obtain an increased proportion of isoparaffins. Ring cleavage also may be effected on the product of isomerization and separation by fractionation or adsorption.

    摘要翻译: 公开了一种方法组合以选择性地升级石脑油以获得用于混合成汽油的富含异链烷烃的产物。 将石脑油原料进行环切割,使用非酸催化剂将环烷烃转化成链烷烃,随后将链烷烃异构化,以获得比例增加的异链烷烃。 也可以通过分级或吸附来进行异构化和分离的产物进行环裂解。

    Stable, high-yield reforming catalyst
    28.
    发明授权
    Stable, high-yield reforming catalyst 失效
    稳定的高产率重整催化剂

    公开(公告)号:US5755956A

    公开(公告)日:1998-05-26

    申请号:US766264

    申请日:1996-12-13

    摘要: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

    摘要翻译: 使用在催化剂中含有不同梯度的多种VIII族(8-10)贵金属的催化剂和非酸性大孔分子筛,可以选择性地将烷烃脱氢环化成芳族化合物的重整方法。 使用这种催化剂床导致链烷烃转化为芳族化合物的更大选择性和改进的催化剂稳定性,特别是在少量硫的存在下。