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
1989-12-27
1991-05-07
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,...
210687, 502 55, B01J 2034, B01J 3860, C02F 142
Patent
active
050136984
ABSTRACT:
A method of reducing alkaline earth metals contamination of activated carbon by washing the contaminated product with an inorganic acid, preferably hydrochloric, and then rinsing the acid washed carbon with water. Preferably, the washing step is carried out from three to thirty minutes at a pH of 2.5 or less. The rinsing step is continued until a pH of 5 or greater is obtained, preferably for a time period of at least three to five minutes. The method is applicable to any alkaline earth metal but particularly calcium and magnesium. Any inorganic may be employed with those forming water soluble salts being preferred. The invention also encompasses a method of regenerating spent activated carbon employing the acid wash and rinsing steps noted above followed by separating the washed carbon from the rinse water followed by drying and then pyrolizing the dried carbon at a temperature of approximately 500 degrees C. to 1100 degrees C. so as to effect the water gas reaction. The regenerated carbon is then removed from the processing stream.
REFERENCES:
patent: 1507521 (1924-09-01), Russell
patent: 1533031 (1925-04-01), Saver
patent: 1771719 (1930-07-01), Meyer
patent: 3965037 (1976-06-01), Kennedy
patent: 4416798 (1983-11-01), Hager et al.
Lonsinger Deborah A.
Lonsinger Jack J.
LandOfFree
Method of reducing carbon loss in regeneration process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of reducing carbon loss in regeneration process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of reducing carbon loss in regeneration process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-939588