公开(公告)号：EP0958239A1

公开(公告)日：1999-11-24

申请号：EP97925418.0

申请日：1997-05-01

申请人： AlliedSignal Inc.

发明人： CHANG, Chin-Hsiung, Chang ,  STELLA, Albert, S. ,  GUALDRON, Miquel, A. ,  FISHER, Wende, M. ,  POOLE, Mike

IPC分类号： C01B21

CPC分类号： C01B21/1445 ,  C01B21/1463 ,  C01B21/1481

摘要： An improved ion exchange process for purifying and/or concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions wherein ion exchange process conditions including effluent pH, effluent conductivity, and ion exchange bed height can be monitored and used to identify when to switch from an ion exchange step feed to a water wash feed, and to switch from a desorbent step to a water rinse step.