초록 ▼

The present invention involves an efficient process for separating components of a gas stream by integrating a cryogenic separation unit and a membrane separation unit. One embodiment provides for the generation of one or more nitrogen-rich streams in the gas or liquid phase, or both, from a stream

The present invention involves an efficient process for separating components of a gas stream by integrating a cryogenic separation unit and a membrane separation unit. One embodiment provides for the generation of one or more nitrogen-rich streams in the gas or liquid phase, or both, from a stream comprising oxygen and nitrogen; e.g., air.

대표청구항 ▼

A process for the production of gaseous and/or liquid nitrogen from a feed gas stream comprising nitrogen and oxygen, said process comprising providing an additional degree of freedom for adjusting the process parameters by: (a) feeding said feed gas stream comprising nitrogen and oxygen to a cryoge

A process for the production of gaseous and/or liquid nitrogen from a feed gas stream comprising nitrogen and oxygen, said process comprising providing an additional degree of freedom for adjusting the process parameters by: (a) feeding said feed gas stream comprising nitrogen and oxygen to a cryogenic separation unit to treat said gas stream; (b) withdrawing at least a portion of the treated gas stream from the cryogenic separation unit; (c) feeding said portion of the treated gas stream to a membrane unit wherein said stream is separated to form a nitrogen-rich stream and an oxygen-rich stream; (d) returning said nitrogen-rich stream to the cryogenic separation unit for further treatment and separation; and (e) subsequently recovering a purified liquid and/or gaseous nitrogen-rich product stream.