Liquid purification or separation – Processes – Chemical treatment
Patent
1992-01-06
1993-03-09
Bascomb, Jr., Wilbur
Liquid purification or separation
Processes
Chemical treatment
210904, 210908, C02F 172, C02F 174
Patent
active
051924536
ABSTRACT:
A process is disclosed which limits the corrosion of the materials of construction of a wet oxidation system treating wastewaters. The process is particularly useful in the wet oxidation treatment of ammonium sulfate containing wastes such as acrylonitrile wastewaters. The wastewater is mixed with an oxygen containing gas such that a substantial residual oxygen gas concentration is maintained from before the stream-gas mixture is heated for wet oxidation until after the oxidized stream-gas mixture is cooled and separated. Preferably, in the treatment of acrylonitrile waste water the shutdown procedure comprises cooling said waste stream by introducing an aqueous liquid substantially free of organic impurities and containing a basic material.
REFERENCES:
patent: 2903425 (1959-09-01), Zimmermann
patent: 2932613 (1960-04-01), Huesler et al.
patent: 3772181 (1973-11-01), Cole et al.
patent: 3907678 (1975-09-01), Pradt et al.
patent: 4000068 (1976-12-01), Nelson et al.
patent: 4347144 (1982-08-01), Bodenbenner et al.
patent: 4350599 (1982-09-01), Chowdhury
patent: 4384959 (1983-05-01), Bauer et al.
patent: 4692252 (1987-09-01), Atwood et al.
S. L. Lade et al., "Sustainable Development At Work: Operating Experience with the Zimpro Wet Oxidation Plant", Oct. 1991.
Leigh Environmental, "Leigh Announces Wet Air Oxidation Plant in UK", Sep. 1990.
The Reactor Magazine, "Industrial Waste Water Treatment, Helping Steel Kick the Coke Oven Gas Habit", No. 41, Feb. 1979.
"Reactor/Wastewater Treatment News From Zimpro/Passavant Inc."; No. 68, Jun. 1990.
"Lo Prox (Low Pressure Wet Oxidation for Waste Water Pretreatment)", Bertrams.
Brandenburg Bruce L.
Keckler Kenneth P.
Lehmann Richard W.
Momont Joseph A.
Bascomb, Jr. Wilbur
Esposito Michael F.
Evans Larry W.
McCarthy Neil M.
The Standard Oil Company
LandOfFree
Wet oxidation process for ACN waste streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wet oxidation process for ACN waste streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wet oxidation process for ACN waste streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-208893