Title:
不均質交換率を有する吸着剤およびその様な吸着剤を用いるPSA法
Document Type and Number:
Japanese Patent JP4282811
Kind Code:
B2
Abstract:
The heterogeneous adsorbent for gas separation comprises zeolite particles of at least an exchanged metal cation chosen from monovalent, divalent and/or trivalent cations. The zeolite has a given average distribution exchanged rate greater than 0% and less than 100% and a standard deviation distribution exchanged rate of 0.3%-5%. The adsorbent comprises: (a) a zeolite chosen in a group formed by a faujasite exchanged with lithium ions with an average exchanged rate of 70%-88% or 88%-93% or 93%-99%; and (b) a zeolite chosen in a group formed by a faujasite exchanged with calcium ions with an average exchanged rate of 65%-95%. Independent claims are included for: (i) the production of the heterogeneous adsorbent, comprising: percolation of at least a monovalent, divalent or trivalent metal's salt through at least an exchange column containing zeolite particles; stopping of the percolation when the metal's salt consumption is 4 stoichiometries; and homogenizing the monovalent, divalent or trivalent metal's content of the zeolite particles without varying the total quantity of the metal in the particles to obtain a standard deviation type distribution or an exchange rate of 0.3%-5%, where the homogenizing is carried out by recirculating at least part of the metal's salt solution in a closed buckle and the gaseous flux to be separated is a polar compound comprising of nitrogen and/or CO and at least a compound less polar, specially oxygen and/or hydrogen and preferably the gaseous flux is air, the first compound being nitrogen and the second compound being oxygen; (ii) a PSA, VSA or TSA separation process for a gaseous flux containing at least a first compound adsorbing preferentially onto at least an adsorbent and at least a second compound adsorbing preferentially onto at least the same adsorbent is carried out using the above adsorbent; and (iii) an apparatus for the above process comprising at least an adsorber or preferably 1-3 adsorbers containing at least a heterogeneous adsorbent.
Inventors:
Serge Morrow
Jack Labasque
Dominique rouge
Jack Labasque
Dominique rouge
Application Number:
JP5443299A
Publication Date:
June 24, 2009
Filing Date:
March 02, 1999
Export Citation:
Assignee:
Rail Liquide-Societe Anonym Pools Retude e Rex Prosatation de Procede Georges Claude
International Classes:
B01D53/04; B01J20/18; B01D53/047; B01J20/16; B01J20/28; B01J20/30
Domestic Patent References:
| JP2160616A | ||||
| JP2157117A | ||||
| JP6198118A | ||||
| JP11226429A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Ryo Hashimoto
Tetsuya Kazama
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Ryo Hashimoto
Tetsuya Kazama