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
1986-03-21
1987-04-21
Konopka, P. 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,...
208251R, 210238, 210681, 210688, 423 63, 423 87, 423139, 502 26, 502 27, 502 28, 502515, 502516, B01J 2034, B01J 3864, B01J 3860, C02F 142
Patent
active
046596844
ABSTRACT:
Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included.
Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves:
treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and,
separating the solids from the liquid; and then
treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and,
separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.
REFERENCES:
patent: 4383104 (1983-05-01), Sasaki et al.
patent: 4530963 (1985-07-01), DeVoe et al.
patent: 4532044 (1985-07-01), Fenton
patent: 4552854 (1985-11-01), Fish
Dixon Harold M.
Gaither Roger S.
Hightower Judson R.
Konopka P. E.
The United States of America as represented by the United States
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