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1. 发明申请

US20100317908A1 Integrated Dimethyl Ether Recovery From An Oxygenate-To-Olefins Process And Production Of Polypropylene 有权
标题翻译：从氧化烯到烯烃方法的综合二甲醚回收和聚丙烯的生产
公开(公告)号：US20100317908A1
公开(公告)日：2010-12-16
申请号：US12772276
申请日：2010-05-03
申请人： Gerald G. McGlamery, JR. , Lawrence C. Smith , Jennifer L. Bancroft
发明人： Gerald G. McGlamery, JR. , Lawrence C. Smith , Jennifer L. Bancroft
IPC分类号： C07C1/20
CPC分类号： C08F110/06 , Y02P30/42
摘要： Provided is a method of producing polypropylene comprising contacting an oxygenate stream with a molecular sieve to form an olefin stream comprising propane, propylene and dimethylether; introducing the olefin stream into a propylene rectification tower possessing from less than 200 theoretical stages; withdrawing from the propylene rectification tower a bottom stream comprising dimethylether, a sidestream comprising propane, and an overhead stream comprising propane and propylene; introducing the overhead to a condenser to accumulate a propylene-rich stream; passing the propylene-rich stream to a splitter to produce (i) a first propylene stream that is introduced into a polypropylene reactor to contact a polyolefin catalyst, and (ii) a second propylene stream that is re-introduced into the rectification tower, the first and second propylene streams introduced at a desirable ratio; and recirculating the dimethylether stream to contact the molecular sieve.
摘要翻译：提供一种生产聚丙烯的方法，其包括使含氧化合物流与分子筛接触以形成包含丙烷，丙烯和二甲醚的烯烃流; 将烯烃流引入到具有小于200个理论级的丙烯精馏塔中; 从丙烯精馏塔中排出包含二甲醚的底部料流，包含丙烷的侧流和包含丙烷和丙烯的塔顶料流; 将塔顶馏出物引入冷凝器以积聚富含丙烯的料流; 将富丙烯流输送到分流器以产生（i）引入聚丙烯反应器中以接触聚烯烃催化剂的第一丙烯料流，和（ii）再次引入精馏塔中的第二丙烯料流，以期望的比例引入第一和第二丙烯料流; 并使二甲醚流再循环以与分子筛接触。

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