Patent · US Active

Method of separating off trace components from a fraction containing at least nitrogen and helium

US8715390B2 · kind B2 · utility

1Cited by

1References

10Claims

0Family size

Assignee

Linde GmbH · DE

Inventors

Hans-Peter Schmidt · Echterdingen, DE
Klaus Ohlig · Winterthur, CH
Ulrich Lindemann · Reichenau, DE
Peter Re · Chatswood, AU
Hung Nguyen · Harrisburg, US

Key dates

Filing date	Feb 7, 2012
Grant date	May 6, 2014
Priority date	—
Expiry date	Jun 30, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25J2270/904
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method is described for separating off trace components from a fraction (1) containing at least nitrogen and helium, wherein this fraction is partially condensed (E) before enrichment of the helium. The partially condensed fraction (2) is fed at least in part to at least one separation column (T) and separated therein into a helium-rich gas fraction (6) and a nitrogen-rich liquid fraction which also contains the unwanted trace components (5).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.