Liquid purification or separation – Processes – Chemical treatment
Patent
1991-11-06
1992-12-01
Wyse, Thomas
Liquid purification or separation
Processes
Chemical treatment
210757, 25218828, 252393, 422 17, C02F 120
Patent
active
051678357
ABSTRACT:
New oxygen scavengers for boiler waters have been discovered, which oxygen scavengers are based upon substituted quinoline compounds. These compounds provide oxygen scavenging capabilities, metal passivating capabilities, and volatility such that condensate systems in an operating boiler are protected. The compounds may be formulated with other oxygen scavengers and other common treatment agents used in boiler waters, especially the volatile amine, such as, but not limited to, morpholine and diethylhydroxylamine.
The preferred quinoline compounds is ethoxyquin, i.e. 6-ethoxy-1,2,-dihydro-2,2,4-dihydroquinoline.
REFERENCES:
patent: 4025631 (1977-05-01), Bar et al.
patent: 4067690 (1977-02-01), Cuisia et al.
patent: 4269717 (1980-10-01), Slovinsky
patent: 4278635 (1979-12-01), Kerst
patent: 4279767 (1980-07-01), Muccitelli
patent: 4282111 (1980-04-01), Ciuba
patent: 4289645 (1980-07-01), Muccitelli
patent: 4311599 (1980-11-01), Slovinsky
patent: 4350606 (1980-10-01), Cuisia et al.
patent: 4363734 (1981-08-01), Slovinsky
patent: 4419327 (1981-12-01), Kelly et al.
patent: 4487708 (1981-03-01), Muccitelli
patent: 4540494 (1981-03-01), Fuchs et al.
patent: 4541932 (1984-11-01), Muccitelli
patent: 4549968 (1984-05-01), Muccitelli
patent: 4569783 (1984-11-01), Muccitelli
patent: 4626411 (1985-04-01), Nemes et al.
patent: 4929364 (1988-11-01), Reardon et al.
patent: 4968438 (1988-11-01), Soderquist et al.
"The Oxidation and Degradation Products of Volatile Oxygen Scavengers and Their Relevance in Plant Applications", Ellis, et al. Corrosion, 87, (Mar. 9--13, 1987), Paper No. 432.
"New Insights into Oxygen Corrosion Control", Reardon, et al., Corrosion, 87, (Mar. 9-13, 1987), Paper No. 438.
"Oxygen Scavengers", Nowak, Corrosion, 89, (Apr. 7-21, 1989). Paper No. 436.
"Characterization of Iron Oxides Films Generated in a New Boiler Feed Water Simulator", Batton, et al, Corrosion, 90 (Apr. 23-27, 1990), Paper No. 144.
"Controlling Oxygen in Steam Generating Systems", Jonas, et al., Power, pp. 43-52, (May, 1990).
Barrett Joseph B.
Epple Donald G.
Miller Robert A.
Nalco Chemical Company
Wyse Thomas
LandOfFree
Method of scavenging oxygen from boiler waters with substituted 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 scavenging oxygen from boiler waters with substituted , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of scavenging oxygen from boiler waters with substituted will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-501926