Minimizing corrosion in a methanol-to-olefin effluent processing system
    1.
    发明授权
    Minimizing corrosion in a methanol-to-olefin effluent processing system 有权
    最大限度地减少甲醇对烯烃流出物处理系统的腐蚀

    公开(公告)号:US07495141B2

    公开(公告)日:2009-02-24

    申请号:US11787334

    申请日:2007-04-16

    IPC分类号: C07C1/00 C07C7/00 C07C7/10

    摘要: The present invention is directed toward reducing corrosion in a methanol-to-olefin (MTO) effluent processing system, and particularly in the condensate removal system thereof, by injecting a neutralization agent into one or more target regions of the MTO effluent processing system. The neutralization agent ensures that any localized condensation in the MTO effluent processing system, particularly in the condensate removal system, occurs under basic conditions and that any acidic condensable components are neutralized. The invention is also directed to monitoring corrosion in an MTO effluent processing system and to monitoring the pH of localized corrosion sites in order to ensure proper neutralization of any acidic condensation formed therein.

    摘要翻译: 本发明旨在通过将中和剂注入到MTO流出物处理系统的一个或多个目标区域来降低甲醇 - 烯烃(MTO)流出物处理系统中的腐蚀,特别是在其冷凝物去除系统中。 中和剂确保MTO流出物处理系统中的任何局部冷凝,特别是在冷凝物去除系统中,在基本条件下发生任何酸性可冷凝组分的中和。 本发明还涉及监测MTO流出物处理系统中的腐蚀和监测局部腐蚀部位的pH,以确保其中形成的任何酸性冷凝物的适当中和。

    Process for removal of alkynes and/or dienes from an olefin stream
    5.
    发明授权
    Process for removal of alkynes and/or dienes from an olefin stream 失效
    从烯烃流中除去炔和/或二烯的方法

    公开(公告)号:US07378562B2

    公开(公告)日:2008-05-27

    申请号:US11516834

    申请日:2006-09-07

    IPC分类号: C07C1/20 C07C2/06

    摘要: The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hydrogen and a first hydrogenation catalyst. The hydrogenation of the first olefin stream produces a second olefin stream that has unreacted hydrogen. The second olefin stream is contacted with a second hydrogenation catalyst producing a third olefin stream. The third olefin stream has low levels of hydrogen and alkynes and/or dienes.

    摘要翻译: 本发明是从含氧化合物至烯烃反应器中提取的烯烃产物流中除去炔和/或二烯的方法。 该方法包括在过量氢气和第一氢化催化剂的存在下氢化具有炔和/或二烯的第一烯烃物流。 第一烯烃流的氢化产生具有未反应氢的第二烯烃流。 将第二烯烃流与产生第三烯烃流的第二氢化催化剂接触。 第三烯烃流具有低水平的氢和炔和/或二烯。

    Process for removal of alkynes and/or dienes from an olefin stream
    6.
    发明授权
    Process for removal of alkynes and/or dienes from an olefin stream 失效
    从烯烃流中除去炔和/或二烯的方法

    公开(公告)号:US07115789B2

    公开(公告)日:2006-10-03

    申请号:US10403229

    申请日:2003-03-28

    IPC分类号: C07C5/08 C07C5/09

    摘要: The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hydrogen and a first hydrogenation catalyst. The hydrogenation of the first olefin stream produces a second olefin stream that has unreacted hydrogen. The second olefin stream is contacted with a second hydrogenation catalyst producing a third olefin stream. The third olefin stream has low levels of hydrogen and alkynes and/or dienes.

    摘要翻译: 本发明是从含氧化合物至烯烃反应器中提取的烯烃产物流中除去炔和/或二烯的方法。 该方法包括在过量氢气和第一氢化催化剂的存在下氢化具有炔和/或二烯的第一烯烃流。 第一烯烃流的氢化产生具有未反应氢的第二烯烃流。 将第二烯烃流与产生第三烯烃流的第二氢化催化剂接触。 第三烯烃流具有低水平的氢和炔和/或二烯。

    Method of removing oxygenate contaminants from an olefin stream
    7.
    发明授权
    Method of removing oxygenate contaminants from an olefin stream 有权
    从烯烃流中除去含氧化合物污染物的方法

    公开(公告)号:US06838587B2

    公开(公告)日:2005-01-04

    申请号:US10126390

    申请日:2002-04-19

    CPC分类号: C07C7/005 C07C7/08 C07C11/02

    摘要: This invention is directed to a method of removing acetaldehyde, CO2 and/or water from an ethylene and/or propylene containing stream. In this invention, acetaldehyde and C4+ olefins are substantially removed from the ethylene and/or propylene containing stream. The stream is then acid gas treated. The ethylene and/or propylene streams which are separated and recovered according to this invention can be further processed, for example, to make polymers such as polyethylene and polypropylene.

    摘要翻译: 本发明涉及从乙烯和/或丙烯流中除去乙醛,二氧化碳和/或水的方法。 在本发明中,基本上从乙烯和/或丙烯流中除去乙醛和C4 +烯烃。 然后将该流体进行酸性气体处理。 根据本发明分离和回收的乙烯和/或丙烯料流可进一步加工,例如制备聚合物如聚乙烯和聚丙烯。