Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – Clay
Patent
1986-01-02
1988-01-05
Dees, Carl F.
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
Clay
502 81, B01J 2012, B01J 2030
Patent
active
047176997
ABSTRACT:
A method of treating clay with acid to beneficiate the clay for increased capacity of filtration of oil-soluble colorant compounds from oil. The clay is ground to a particle size distribution such that more than 50% by weight of the clay, on a dry basis, passes through a 200 mesh screen and less than 5% by weight of the clay, on a dry basis, is finer than 5 microns. After grinding, the ground clay is directly contacted with an acid solution to form an acid slurry of the clay. The clay acid slurry is agitated for a time sufficient and at a temperature sufficient so that the acid reacts with a portion of the clay and, thereafter, the acid treated clay is separated from the acid solution; the clay then is washed to remove most of the acid solution from the clay; filtered to a liquid content less than about 60% by weight and thereafter dried to a liquid content less than about 20% by weight.
REFERENCES:
patent: 1976127 (1934-10-01), Huber
patent: 2192000 (1940-02-01), Wilson
patent: 2484828 (1949-10-01), Hickey
patent: 2495751 (1950-01-01), Mills et al.
patent: 2892800 (1959-06-01), Taipale
patent: 2981697 (1961-04-01), Mickelson et al.
American Colloid Company
Dees Carl F.
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