Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Patent
1979-05-03
1980-06-24
Hearn, Brian E.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
423240, 423241, 423242, 423245, 423246, 423336, 423608, 423624, 423636, 423210, C01B 700
Patent
active
042094968
ABSTRACT:
A process for treatment of aluminum chloride production offgas containing Cl.sub.2, CO, CO.sub.2, HCl, COCl.sub.2, COS, SO.sub.2, N.sub.2, SiCl.sub.4 and metal chlorides by reaction with water vapor in the presence of an alumina or low iron sand catalyst to convert SiCl.sub.4 and metal chlorides to the corresponding oxides and HCl; subsequent reaction of COCl.sub.2 with water vapor in the presence of an activated carbon catalyst to form CO.sub.2 and HCl; and removal of HCl by contacting the offgas with liquid water. Reaction with steam in the presence of alumina catalyst prior to reaction with steam in the presence of an activated carbon catalyst prolongs the useful life of the activated carbon catalyst and avoids the necessity of removing SiCl.sub.4 and metal chlorides from the offgas by adsorption onto dry activated carbon prior to contacting the activated carbon catalyst with offgas.
REFERENCES:
patent: 1451399 (1923-04-01), Low
patent: 2682930 (1954-07-01), Krchma
patent: 3043657 (1962-07-01), Hughes et al.
patent: 3043659 (1962-07-01), Hughes et al.
patent: 3043660 (1962-07-01), Hughes et al.
patent: 3314753 (1967-04-01), Richert et al.
patent: 3376113 (1968-04-01), Frevel
patent: 3615163 (1971-10-01), Brzozowski
patent: 3642441 (1972-02-01), Van Weert
patent: 3980755 (1976-09-01), Black et al.
patent: 4157374 (1979-06-01), Carpenter et al.
Hudson, R. "The Vapour Phase Hydrolysis of Non Metallic Chlorides", Proceedings of the 11th International Congress of Pure and Applied Chemistry, (London), 1947, pp. 297-305.
Carpenter L. Graydon
Cedro, III Vito
Kinosz Donald L.
Aluminum Company of America
Hearn Brian E.
Klepac Glenn E.
LandOfFree
Treatment of offgas from aluminum chloride production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treatment of offgas from aluminum chloride production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of offgas from aluminum chloride production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1480453