Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1990-11-13
1991-06-18
Willis, Prince E.
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
252181, 252 80, 252 82, C02F 510
Patent
active
050247832
ABSTRACT:
An in-service formulation for the removal of scale deposits from metallic working surfaces of boilers and for the ongoing prevention of build-up of such deposits on boiler surfaces, with such deposits commonly consisting of insoluble salts of calcium together with oxides of iron. The formulation comprises a blend of selected phosphonates, sodium lignosulfonate, one or more scale-modifying polymers, along with one or more chelants. Sodium gluconate is utilized for its ability to inhibit corrosion of ferrous surfaces. The pH of the working solution is adjusted to a level of between about 10.5 to 12.5. The formulation of the present invention provides a significant capacity for the removal of scale while remaining fully compatible with the water present in the system during and after scale removal, and the materials remain effective with contaminants present in the boiler water following a substantial number of cycles of concentration.
REFERENCES:
patent: 4277359 (1981-07-01), Lipinski
patent: 4279768 (1981-07-01), Busch
patent: 4443340 (1984-04-01), May et al.
patent: 4512552 (1985-04-01), Katayama et al.
patent: 4545920 (1985-10-01), Lorenc et al.
patent: 4575425 (1986-03-01), Boffardi et al.
patent: 4600524 (1986-07-01), Cusia et al.
patent: 4640793 (1987-02-01), Persinski et al.
Busch Bruce D.
Nicholls Jeffrey R.
Fremont Industries, Inc.
Silbermann J.
Willis Prince E.
LandOfFree
Boiler and boiler water treatment system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boiler and boiler water treatment system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boiler and boiler water treatment system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-144413