Gasoline upgrading process
    1.
    发明授权
    Gasoline upgrading process 失效
    汽油升级过程

    公开(公告)号:US5413696A

    公开(公告)日:1995-05-09

    申请号:US891124

    申请日:1992-06-01

    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 comprising zeolite beta. 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通过加氢脱硫然后在包含β沸石的酸性催化剂上处理由催化裂解的含硫石脑油生产。 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。

    Hydrocarbon upgrading process
    2.
    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

    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
    3.
    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

    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。

    Gasoline upgrading process
    4.
    发明授权
    Gasoline upgrading process 失效
    汽油升级过程

    公开(公告)号:US5318690A

    公开(公告)日:1994-06-07

    申请号:US1681

    申请日:1993-01-07

    摘要: Low sulfur gasoline is produced from a catalytically cracked, sulfur-containing naphtha by fractionating the naphtha feed into a low boiling fraction in which the majority of the sulfur is present in the form of mercaptans and a high-boiling fraction in which the sulfur is predominantly in non-mercaptan form such as thiophenes. The low boiling fraction is desulfurized by a non-hydrogenatile mercaptan extraction process which retains the olefins present in this fraction. The second fraction is desulfurized by hydrodesulfurization, which results in some saturation of olefins and loss of octane. The octane loss is restored by treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5, to form a low sulfur gasoline product with an octane number comparable to that of the feed naphtha but which contains some recombined sulfur in the form or mercaptans which are removed in a final hydrotreatment.

    摘要翻译: 通过将石脑油进料分馏成低沸点馏分,其中大部分硫以硫醇和高沸点馏分的形式存在,低硫汽油由催化裂解的含硫石脑油生产,其中硫主要是 在非硫醇形式如噻吩中。 低沸点馏分通过非挥发性硫醇萃取方法进行脱硫,该方法保留存在于该馏分中的烯烃。 第二部分通过加氢脱硫脱硫,导致烯烃的一些饱和和辛烷值的损失。 通过在酸性催化剂,优选中等孔径的沸石如ZSM-5上处理来恢复辛烷值损失,以形成辛烷值与供应石脑油相当的低硫汽油产物,但其中含有一些重组硫 形式或硫醇,其在最终加氢处理中被除去。

    Gasoline upgrading process
    5.
    发明授权
    Gasoline upgrading process 失效
    汽油升级过程

    公开(公告)号:US5326463A

    公开(公告)日:1994-07-05

    申请号:US967322

    申请日:1992-10-28

    摘要: 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.

    摘要翻译: 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。

    Gasoline upgrading process
    6.
    发明授权
    Gasoline upgrading process 失效
    汽油升级过程

    公开(公告)号:US5290427A

    公开(公告)日:1994-03-01

    申请号:US925007

    申请日:1992-08-05

    IPC分类号: C10G69/08 C10G45/00

    CPC分类号: C10G69/08

    摘要: Low sulfur gasoline is produced from a catalytically cracked, sulfur-containing naphtha by fractionating the naphtha feed into a number of fractions of differing boiling range and hydrodesulfurizing them by by feeding them into a hydrodesulfurization reactor at spaced locations along the length of the reactor in order of descending boiling range, with the highest boiling fraction first. Staged introduction of the feed into the hydrodesulfurization reactor in this way promotes desulfurization of the sulfur-rich, olefin poor back end of the feed while reducing the saturation of the high octane olefins in the olefin-rich, sulfur-poor front end, so preserving octane while achieving the desired desulfurization. The hydrodesulfurization is 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 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.

    摘要翻译: 通过将石脑油进料分馏成不同沸程的多个馏分并将其加氢脱硫,通过将其按照反应器长度的间隔位置依次送入加氢脱硫反应器中,由催化裂化的含硫石脑油生产低硫汽油 沸点下降,沸点最高。 以这种方式将进料分阶段引入加氢脱硫反应器促进了进料中富含硫的烯烃不良后端的脱硫,同时降低了烯烃富含硫贫的前端中的高辛烷值烯烃的饱和度,从而保持 辛烷值,同时达到理想的脱硫效果。 加氢脱硫之后,通过酸性催化剂,优选中等孔径的沸石如ZSM-5处理。 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。