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    Hydrocarbon upgrading process
    8.
    发明授权
    Hydrocarbon upgrading process 失效
    碳氢化合物升级过程

    公开(公告)号：US5399258A

    公开(公告)日：1995-03-21

    申请号：US988492

    申请日：1992-12-10

    申请人： David L. Fletcher ,  Michael S. Sarli ,  Stuart S. Shih ,  Stephen J. McGovern ,  Douglas S. Diez ,  Mohsen N. Harandi ,  Timothy L. Hilbert

    发明人： David L. Fletcher ,  Michael S. Sarli ,  Stuart S. Shih ,  Stephen J. McGovern ,  Douglas S. Diez ,  Mohsen N. Harandi ,  Timothy L. Hilbert

    IPC分类号： C10G35/095 ,  C10G53/16 ,  C10G67/00 ,  C10G67/16 ,  C10G69/08 ,  C10G45/00

    CPC分类号： C10G35/095 ,  C10G53/16 ,  C10G67/00 ,  C10G67/16 ,  C10G69/08 ,  C10G2300/70

    摘要： Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst under endothermic conditions in a second reaction zone. Heat is added to the endothermic reaction zone to initiate and maintain octane restoring reactions. The preferred acidic catalyst is an intermediate pore size zeolite such as ZSM-5. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. The addition of heat at the second zone prolongs hydrodesulfurization catalyst life by allowing a lower hydrodesulfurization reactor temperature. The addition of heat also maximizes octane increase in the second zone.

    摘要翻译： 相对高辛烷值的低硫汽油由催化裂化的含硫石脑油通过加氢脱硫然后在酸性催化剂上在吸热条件下在第二反应区中进行处理。 将热量加入到吸热反应区中以引发和维持辛烷恢复反应。 优选的酸性催化剂是中等孔径沸石，例如ZSM-5。 在第二步骤中对酸性催化剂的处理恢复了由于氢化处理而发生的辛烷值损失，并导致具有与进料石脑油相当的辛烷值的低硫汽油产物。 通过允许较低的加氢脱硫反应器温度，在第二区域的加热延长了加氢脱硫催化剂寿命。 加热也使第二区域的辛烷值增加最大化。

    Gasoline upgrading process
    9.
    发明授权
    Gasoline upgrading process 失效
    汽油升级过程

    公开(公告)号：US5352354A

    公开(公告)日：1994-10-04

    申请号：US891134

    申请日：1992-06-01

    申请人： David L. Fletcher ,  Timothy L. Hilbert ,  Stephen J. McGovern ,  Michael S. Sarli ,  Stuart S. Shih

    发明人： David L. Fletcher ,  Timothy L. Hilbert ,  Stephen J. McGovern ,  Michael S. Sarli ,  Stuart S. Shih

    IPC分类号： C10G35/095 ,  C10G53/16 ,  C10G67/00 ,  C10G67/16 ,  C10G69/08 ,  C10G69/02

    CPC分类号： C10G35/095 ,  C10G53/16 ,  C10G67/00 ,  C10G67/16 ,  C10G69/08 ,  C10G2300/70

    摘要： Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst defined by its x-ray diffraction pattern and preferably comprising the synthetic zeolite MCM-22. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.

    摘要翻译： 相对高辛烷值的低硫汽油由催化裂化的含硫石脑油通过加氢脱硫然后在由其X射线衍射图定义的酸性催化剂上处理，优选包含合成沸石MCM-22制备。 在第二步骤中对酸性催化剂的处理恢复了由于氢化处理而发生的辛烷值损失，并导致具有与进料石脑油相当的辛烷值的低硫汽油产物。 在有利的情况下，使用延伸终点的原料如重质石脑油，高于约380°F（约193℃）为95％，可以获得相对于进料的产品辛烷值和产率的改善。