公开(公告)号：JPH09225247A

公开(公告)日：1997-09-02

申请号：JP21413396

申请日：1996-07-26

Applicant: BAYER AG

Inventor： GERUHARUTO RAISU ,  ROTAA PUTSUPE ,  BURUNO HEESU

IPC: B01D53/04 ,  B01D53/047 ,  B01J20/18 ,  C01B13/02 ,  C01B21/04

Abstract: PROBLEM TO BE SOLVED: To provide an improved pressure alternating adsorption method adsorbing nitrogen from gaseous mixture by using pellet of zeolite. SOLUTION: In a method in which nitrogen is adsorbed from the gaseous mixture containing a gas component low in polarity at 20-50 deg.C by the pressure alternating method in which the gaseous mixture is allowed to pass through an adsorption device in which pellet of zeolite is packed and an inlet area and an outlet area are formed, at least two packings, that is, the packing of Li zeolite X is attached to the inlet area of the adsorption device and the packing consisting of at least one kind of Ca zeolite A and Ca zeolite X is attached to the outlet area of the adsorption device.

公开(公告)号：JPH08309180A

公开(公告)日：1996-11-26

申请号：JP14236996

申请日：1996-05-14

Applicant: BAYER AG

Inventor： GERUHARUTO RAISU ,  ROTAA PUTSUPE ,  BURUNO HEESU

IPC: B01D53/04 ,  B01D53/047 ,  B01J20/18 ,  C01B13/02

Abstract: PROBLEM TO BE SOLVED: To improve an oxygen yield and to enrich oxygen in air with low energy by respectively specifying an inlet temp. and kinds of zeolites, in a process for oxygen enrichment by the use of combined zeolite fillers depending on the inlet temp. SOLUTION: A packing comprising Na-Ca zeolite X having the SiO2 /Al2 O3 ratio of 2.0-2.5 and the CaO/Al2 O3 ratio of 0.4-0.75 is provided at an air inlet side of a vacuum swing adsorber, or the like. The ratios are dependent upon the air inlet temp., and at an air inlet temp. of 20-30 deg.C, the CaO/Al2 O3 ratio of the Na-Ca zeolite X is 0.4-0.6, at an inlet temp. of 30-40 deg.C, the ratio is 0.55-0.65, and at an inlet temp. of 40-50 deg.C, the ratio is 0.6-0.75. The packing at the air outlet side of the adsorber comprises Na-Ca zeolite A with a CaO/Al2 O3 ratio of 0.5-1.0 or Na-Ca zeolite X with a CaO/Al2 O3 ratio of 0.5-1.0, wherein the ratio is higher than that of the inlet side. Thereby, N2 /O2 selectivity of the packing is improved, to enrich oxygen in air.

公开(公告)号：JPH0952703A

公开(公告)日：1997-02-25

申请号：JP21903796

申请日：1996-08-02

Applicant: BAYER AG

Inventor： GERUHARUTO RAISU ,  ROTAA PUTSUPE ,  BURUNO HEESU

IPC: B01D53/04 ,  B01D53/047 ,  B01J20/18 ,  C01B21/04