公开(公告)号：US20060111601A1

公开(公告)日：2006-05-25

申请号：US10511241

申请日：2002-09-30

申请人： Minquan Cheng ,  Jeffrey Phillips ,  Michael Nicoletti ,  David Lumgard Jr. ,  John Shutt ,  Jeffrey Kabin ,  Wilfried Borgmann ,  Josef Kunkel ,  Helmut Fritz ,  Roland Walzi ,  Gerhard Lauermann ,  Klaus Muller

发明人： Minquan Cheng ,  Jeffrey Phillips ,  Michael Nicoletti ,  David Lumgard Jr. ,  John Shutt ,  Jeffrey Kabin ,  Wilfried Borgmann ,  Josef Kunkel ,  Helmut Fritz ,  Roland Walzi ,  Gerhard Lauermann ,  Klaus Muller

IPC分类号： C07C2/02 ,  C07C7/00

CPC分类号： C07C7/04 ,  C07C11/02

摘要： This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.

公开(公告)号：US20070197849A1

公开(公告)日：2007-08-23

申请号：US11787334

申请日：2007-04-16

申请人： David Lumgair ,  Jeffrey Kabin

发明人： David Lumgair ,  Jeffrey Kabin

IPC分类号： C07C1/00

CPC分类号： C10G3/00 ,  C07C1/20 ,  C10G75/02 ,  C10G2300/4075 ,  C10G2400/20 ,  C23F15/00 ,  Y02P30/20 ,  Y10S585/95 ,  C07C11/02

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。