公开(公告)号：US06749821B1

公开(公告)日：2004-06-15

申请号：US10011353

申请日：2001-12-03

申请人： James F. McGehee ,  John R. Richmond ,  Kaoru Tegawa ,  Yoshiki Nakano

发明人： James F. McGehee ,  John R. Richmond ,  Kaoru Tegawa ,  Yoshiki Nakano

IPC分类号： B01J800

CPC分类号： B01J23/42 ,  B01J8/025 ,  B01J8/12 ,  B01J35/008 ,  B01J37/16 ,  B01J2208/00256 ,  B01J2208/00274 ,  B01J2219/00006 ,  B01J2219/0004

摘要： A process for the purification of an inert gas recycled from a polymerization reactor is disclosed, comprising the steps of mixing the gas with oxygen or gas containing oxygen in stoichiometric quantity or in such an excess that the gas at the outlet of the catalyst bed contains no more than 250 ppm of oxygen, circulating the gas through a catalyst bed comprising platinum, which has been subjected to a reducing environment, at temperatures of no more than 300° C. (572° F.) and preferably no more than 250° C. (482° F.) and recycling the gas to the polymerization reactor.

摘要翻译： 公开了一种从聚合反应器中再循环的惰性气体的净化方法，其包括以下步骤：将气体与氧气或含有氧气的化学计量或过量混合，使得催化剂床出口处的气体不含 超过250ppm的氧气，在不超过300℃（572°F）的温度和不超过250℃的温度下将气体循环通过包含已经经历还原环境的铂的催化剂床 （482°F）并将气体再循环到聚合反应器中。