Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1993-02-12
1994-10-25
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 22, 502 23, 502 25, 502 28, 502 31, 502 33, 554191, B01J 2034, B01J 3860, B01J 3864, C11B 310
Patent
active
053589157
ABSTRACT:
A three step process for regenerating spent bleaching clays and acid-activated smectite catalyst granules includes: (1) an extraction step to remove a majority of entrained oil, preferably about 75% to about 95% by weight of the entrained oil, when regenerating bleaching clays; (2) an oxidation step to remove the majority of remaining carbonaceous adsorbates which are not removed by the preceding extraction step, and (3) an acid wash step to restore the acidity normally associated with fresh acid-activated bleaching clays. The features of steps 2 and 3 may be combined into a single step by using an appropriate oxidant, for example, a source of acidic protons, such as peracetic acid.
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Kucharz Carolyn J.
Nebergall Robert S.
Taylor Dennis R.
American Colloid Company
Konopka Paul E.
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