Patent · US Expired

Process for the adsorption of nitrogen from gas mixtures by means of pressure swing adsorption with zeolites

US5885331A · kind A · utility

12Cited by

24References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gerhard Reiss · Krefeld, DE
Lothar Puppe · Burscheid, DE
Bruno Hees · Langenfeld, DE

Key dates

Filing date	Jul 25, 1996
Grant date	Mar 23, 1999
Priority date	—
Expiry date	Jul 25, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S95/902
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In the pressure swing adsorption of nitrogen from gas mixtures with less polar gas components at temperatures of between 20.degree. and 50.degree. C., wherein the gas mixture is passed through an adsorber which is filled with packings of zeolite pellets and has an inlet zone and an outlet zone, the improvement which comprises providing at least two packings in the adsorber, a packing of Li-zeolite X in the inlet zone of the adsorber and a packing of at least one of Ca-zeolite A and Ca-zeolite X in the outlet zone of the adsorber.

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