Silica guard bed for adsorbent used in an aqueous system

Details Silica guard bed for adsorbent used in an aqueous system Silica guard bed for adsorbent used in an aqueous system

1979-05-25

1980-10-07

Marcus, Michael S.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 46B, 127 55, 536 1, 210670, 210690, C13D 314

Patent

active

042266394

ABSTRACT:
A process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides, in which the mixture is contacted with an adsorbent comprising a crystalline aluminosilicate which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the process comprises contacting the desorbent, and/or the feed mixture, with a bed of silica gel prior to contacting the feed mixture with the adsorbent. This effects a substantial reduction in the undesirable dissolution.

REFERENCES:
patent: 4014711 (1977-03-01), Odawara et al.
patent: 4157267 (1979-06-01), Odawara et al.

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