公开(公告)号：US06560992B2

公开(公告)日：2003-05-13

申请号：US09957469

申请日：2001-09-21

申请人： Horst Corduan ,  Dietrich Rottmann

发明人： Horst Corduan ,  Dietrich Rottmann

IPC分类号： F25J3100

CPC分类号： F25J3/04793 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/048 ,  F25J2235/58

摘要： For adjusting the capacity of a low-temperature rectification unit having a high pressure column and a low pressure column in which a fluid is introduced into the high pressure column (1) and in which liquid from the bottom of the high pressure column is directed into the low pressure column (2), the amount of liquid that is removed from the bottom of high pressure and fed to the low pressure column (2) is controlled via flow adjustment (4), wherein a nominal value for flow adjustment (4) is set to a desired amount of flow, and the liquid level of the liquid at the bottom of column (1) that operates at higher pressure is fixed without a set nominal value corresponding to the amount of liquid that is removed.