Rejuvenating deactivated molecular sieve
    2.
    发明授权
    Rejuvenating deactivated molecular sieve 有权
    复活失活分子筛

    公开(公告)号:US07754933B2

    公开(公告)日:2010-07-13

    申请号:US11807450

    申请日:2007-05-29

    IPC分类号: C07C1/00 B01J21/20 B01J38/02

    摘要: This invention is directed to a method of rejuvenating a molecular sieve that has decreased catalytic activity as a result of contact with moisture, and a method of using the rejuvenated catalyst to make an olefin product from methanol feed. The molecular sieve can be rejuvenated by heating at a rate sufficient to increase the catalytic activity of the molecular sieve. The molecular sieve is considered to be rejuvenated when the molecular sieve has a CMCPS that is increased by at least 5% relative to that at a heat rate basis of 40° C./min over a temperature range of from 25° C. to 475° C.

    摘要翻译: 本发明涉及一种由于与水分接触而使具有降低的催化活性的分子筛再生的方法,以及使用再生催化剂从甲醇进料制备烯烃产物的方法。 分子筛可以通过以足以增加分子筛的催化活性的速度加热来回复。 当分子筛具有相对于在25℃至475℃的温度范围内以40℃/分钟的热速率升高至少5%的CMCPS时,分子筛被认为是恢复活力的 C。

    Two catalyst process for making olefin
    5.
    发明授权
    Two catalyst process for making olefin 失效
    制备烯烃的两种催化剂方法

    公开(公告)号:US07230151B2

    公开(公告)日:2007-06-12

    申请号:US10891975

    申请日:2004-07-15

    IPC分类号: C07C1/20

    摘要: This invention is to a process of making olefin, particularly ethylene and propylene, from an oxygenate feed. The invention uses two or more zeolite catalysts. Examples of zeolite catalysts include a first catalyst containing of ZSM-5, and a second catalyst containing a 10-ring molecular sieve, including but not limited to, ZSM-22, ZSM-23, ZSM35, ZSM-48, and mixtures thereof. The ZSM-5 can be unmodified, phosphorous modified, steam modified having a micropore volume reduced to not less than 50% of that of the unsteamed ZSM-5, or various mixtures thereof.

    摘要翻译: 本发明是由含氧化合物进料制备烯烃,特别是乙烯和丙烯的方法。 本发明使用两种或更多种沸石催化剂。 沸石催化剂的实例包括含有ZSM-5的第一催化剂和含有10环分子筛的第二催化剂,包括但不限于ZSM-22,ZSM-23,ZSM35,ZSM-48及其混合物。 ZSM-5可以是未改性的,磷改性的,蒸汽改性的,具有减小到不少于未蒸发的ZSM-5或其各种混合物的50%的微孔体积。

    Oxygenate to olefin process
    7.
    发明授权
    Oxygenate to olefin process 有权
    氧化烯到烯烃工艺

    公开(公告)号:US06965057B2

    公开(公告)日:2005-11-15

    申请号:US10807818

    申请日:2004-03-24

    摘要: The invention relates to a process for converting an oxygenate feedstock into an olefin product stream comprising (a) contacting an oxygenate feedstock with a molecular sieve catalyst in a reactor under conditions effective to convert the feedstock into an olefin product stream and to form carbonaceous deposits on the catalyst; (b) contacting at least a portion of the catalyst having said carbonaceous deposits with an oxygen containing gas under conditions effective to obtain a regenerated catalyst having a reduced carbonaceous deposit level and having an increased molecular oxygen content; (c) removing at least 60% by volume of said molecular oxygen from the regenerated catalyst based upon the total volume of molecular oxygen; (d) returning said regenerated catalyst to said reactor; and (e) repeating steps (a)–(d).

    摘要翻译: 本发明涉及一种将含氧化合物原料转化成烯烃产物流的方法,该方法包括(a)在有效将原料转化成烯烃产物流并形成碳质沉积物的条件下,使反应器中的含氧化合物原料与分子筛催化剂接触 催化剂; (b)在有效获得具有降低的碳沉积物水平并且具有增加的分子氧含量的再生催化剂的条件下使至少一部分具有所述碳质沉积物的催化剂与含氧气体接触; (c)基于分子氧的总体积从再生催化剂中除去至少60体积%的所述分子氧; (d)将所述再生催化剂返回到所述反应器; 和(e)重复步骤(a) - (d)。