Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1988-03-30
1989-10-17
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
55 31, 55 59, 55 62, 55 73, 55 74, 55 75, 203 41, 210673, 585825, B01D 1508, B01D 5304
Patent
active
048745243
ABSTRACT:
An adsorption-desorption process for separation of a component from a feed mixture of components wherein at least two components of the feed mixture are adsorbed by an adsorbent material during the adsorption step of the adsorption-desorption process and the adsorbent material has a greater affinity for a first one of said adsorbed components than for a second one of the adsorbed components, the process comprising charging the feed mixture to an inlet end of a bed of the adsorbent material, passing the feed mixture through the bed under such conditions that the adsorbent material adsorbs said first and second components of the feed mixture, withdrawing an effluent from an outlet end of the bed, the effluent consisting essentially of feed mixture decreased in content of the materials adsorbed by the bed, after the adsorbent material is substantially saturated, desorbing the first and second components from the adsorbent material in at least two steps at substantially the same pressure but at different temperatures, the temperature of the first desorption step being less than the temperature of a subsequent desorption step, and separately recovering the material desorbed in said steps, the concentration of said first component being greater in the material recovered from said subsequent desorption step than in the material recovered from said first desorption step, and the concentration of said second component being greater in the material recovered from the first desorption step than in the material recovered from said subsequent desorption step.
REFERENCES:
patent: 1906917 (1933-05-01), Peters et al.
patent: 3080433 (1963-03-01), Hengstebeck
Findley Marshall E.
Liapis Athanasios I.
Nguyen Hoa T.
Cintins Ivars
The Curators of the University of Missouri
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