公开(公告)号：EP3368847A1

公开(公告)日：2018-09-05

申请号：EP16730191.0

申请日：2016-06-08

申请人： Praxair Technology Inc.

发明人： ABDELWAHAH, Ahmed, F. ,  DEGENSTEIN, Nick, J. ,  SCHWARZ, Carl, L. ,  CHEN, Reh-lin

IPC分类号： F25J3/04 ,  F04D17/12 ,  F04D25/06 ,  F04D25/16 ,  F04D27/02

CPC分类号： F25J3/04018 ,  F04B37/08 ,  F04B49/06 ,  F04B49/103 ,  F04B49/20 ,  F04C28/14 ,  F04D17/12 ,  F04D27/0246 ,  F04D27/0261 ,  F04D27/0269 ,  F04D29/266 ,  F04D29/462 ,  F04D29/668 ,  F05D2260/311 ,  F25J3/04024 ,  F25J3/0409 ,  F25J3/04133 ,  F25J3/0429 ,  F25J3/04296 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04781 ,  F25J3/04884 ,  F25J3/04957 ,  F25J2230/20 ,  F25J2230/24 ,  F25J2230/40 ,  F25J2250/02

摘要： A method for controlling the compression of an incoming feed air stream to a cryogenic air separation plant using at least two variable speed compressor drive assemblies controlled in tandem is provided. The first variable speed driver assembly drives at least one compression stage in the lower pressure compressor unit driven while the second variable speed driver assembly drives higher pressure compression stage disposed either in the common air compression train or the split functional compression train of the air separation plant. The first and second variable speed driver assemblies are preferably high speed, variable speed electric motor assemblies each having a motor body, a motor housing, and a motor shaft with one or more impellers directly and rigidly coupled to the motor shaft via a sacrificial rigid shaft coupling.