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    • 6. 发明授权
    • Hydrocarbon upgrading process
    • 碳氢化合物升级过程
    • US5503734A
    • 1996-04-02
    • US367670
    • 1994-12-30
    • David L. FletcherMichael S. SarliStuart S. Shih
    • David L. FletcherMichael S. SarliStuart S. Shih
    • C10G69/08C10G69/02
    • C10G69/08
    • 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, preferably a catalyst comprising an intermediate pore size zeolite, such as ZSM-5, and a large pore size zeolite, including a metal hydrogenation function, such as a faujasite, preferably USY, which contains nickel and molybdenum. 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. Use of the intermediate pore size zeolite and the large pore size zeolite is expected to provide more boiling point conversion than either zeolite alone under the same conditions.
    • 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,优选包括中等孔径沸石如ZSM-5的催化剂和大孔径 沸石,包括金属氢化功能,例如含有镍和钼的八面沸石,优选USY。 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。 中等孔径沸石和大孔径沸石的使用预期在相同条件下单独使用沸石提供更多的沸点转化率。
    • 7. 发明授权
    • Hydrocarbon upgrading process
    • 碳氢化合物升级过程
    • US5409596A
    • 1995-04-25
    • US850106
    • 1992-03-12
    • David L. FletcherMichael S. SarliStuart S. Shih
    • David L. FletcherMichael S. SarliStuart S. Shih
    • C10G69/08C10G69/02
    • C10G69/08
    • 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, preferably 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. 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.
    • 相对高辛烷值的低硫汽油通过加氢脱硫然后在酸性催化剂,优选中等孔径的沸石如ZSM-5上处理由催化裂化的含硫石脑油产生。 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。
    • 10. 发明授权
    • Gasoline upgrading process
    • 汽油升级过程
    • US5326463A
    • 1994-07-05
    • US967322
    • 1992-10-28
    • David L. FletcherTimothy L. HilbertMichael S. SarliStuart S. Shih
    • David L. FletcherTimothy L. HilbertMichael S. SarliStuart S. Shih
    • C10G35/095C10G53/16C10G67/00C10G67/16C10G69/08C10G45/00
    • C10G35/095C10G53/16C10G67/00C10G67/16C10G69/08C10G2300/70
    • Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization and treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5 in an octane restoration step, followed by separation of a C.sub.9 -containing fraction, and recycling the C.sub.9 -containing fraction to the octane restoration step. A hydrocarbon fraction comprising C.sub.1 to C.sub.3 hydrocarbons may also be separated from the octane restored product and recycled for purposes of alkylating aromatic hydrocarbons and for this purpose, it may be advantageous to introduce a benzene-rich feed, such as a reformate, to the process. The treatment over the acidic catalyst in the octane restoration 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.
    • 相对高辛烷值的低硫汽油通过加氢脱硫和在酸性催化剂,优选中等孔径的沸石如ZSM-5在辛烷值恢复步骤中进行加氢脱硫和处理,由催化裂解的含硫石脑油生产,然后分离 含有C9的级分,并将含C9馏分再循环至辛烷还原步骤。 包含C 1至C 3烃的烃馏分也可与正辛烷烃还原产物分离并再循环用于烷基化芳族烃的目的,为此,将富含苯的进料如重整产物引入该方法可能是有利的 。 在辛烷维持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,并导致辛烷值与进料石脑油相当的辛烷值的低硫汽油产物。