Process for cryogenic separation of atmospheric gas mixture,申请号CZ19970000727-传众专利搜索

Process for cryogenic separation of atmospheric gas mixture

申请公布号：CZ286287(B6)

申请号：CZ19970000727

申请日期：1997.03.10

申请公布日期：2000.03.15

申请人：

THE BOC GROUP,INC.

发明人：MCKEIGUE KEVIN;KRISHNAMURTHY RAMACHANDRAN

分类号：F25J3/02;B01D3/16;B01J19/32;F25J3/04;(IPC1-7):F25J3/04

主分类号：F25J3/02

摘要：<p>The proposed process is characterized in that liquid and gaseous phases of said atmospheric gas mixture intended for separation, is conducted counter-currently through a structured charge. The structured charge is made of corrugated metal sheet with specific surface ranging from 250 to 1000 square meters per one cubic meter and through-flow channels are oriented in the angle of 30 degrees or less with respect to horizontal plane and this column is operated in such a manner that at least in one section thereof the pressure is greater than 0,2 MPa, a through-flow parameter phi, that corresponds to the value CiL/CiV, wherein CiV represents vapor velocity of ascending gaseous phase and CiL represents velocity of liquid of descending liquid phase, is either within the range of 0.01 to 0.1 or it is greater than 0.1 and vapor velocity is less than critical velocity of vapor at which at least in one section congestion takes place, and greater than the minimum vapor velocity counted from the indicated specific parameters.</p>