公开(公告)号：US09174175B2

公开(公告)日：2015-11-03

申请号：US14345343

申请日：2012-09-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Scott T. Matteucci ,  Clark H. Cummins ,  William J. Kruper ,  Harry Craig Silvis

IPC: B01D71/58 ,  B01D53/22 ,  C08K5/28 ,  C08K5/43 ,  C08L77/12 ,  C08L79/08

CPC classification number: B01D71/58 ,  B01D53/22 ,  B01D2053/221 ,  B01D2257/504 ,  C08K5/28 ,  C08K5/43 ,  C08L77/12 ,  C08L79/08

Abstract: The present invention appreciates that compounds comprising ester linkages and nitrogen-containing moieties that are at least divalent (e.g., urea, urethane, amide, etc.) can be crosslinked with azides to form membranes that are resistant to CO2 plasticization, that are selective for acid gases relative to nonpolar gases such as hydrocarbons, and that have high acid gas flux characteristics. The resultant membranes have stable structure and stable separation properties at higher temperatures and pressures. The membranes are compatible with many industrial processes in which polar gases are separated from nopolar gases. In an exemplary mode of practice, the membranes can be used to separate acid gases from the hydrocarbon gases in natural or non-acid gas components of flue gas mixtures (e.g., N2, O2, etc.).

Abstract translation: 本发明认识到，含有至少二价的酯键和含氮部分的化合物（例如尿素，氨基甲酸酯，酰胺等）可以与叠氮化物交联以形成耐二氧化碳增塑的膜，其对于 酸性气体相对于非极性气体如烃类，具有较高的酸性气体通量特性。 所得膜在较高的温度和压力下具有稳定的结构和稳定的分离性能。 该膜与许多工业过程兼容，其中极性气体与非极性气体分离。 在示例性实践模式中，膜可以用于将烟气混合物（例如，N 2，O 2等）的天然或非酸性气体组分中的烃气体分离出酸性气体。