Nonionic polymers for the treatment of boiler water

Details Nonionic polymers for the treatment of boiler water Nonionic polymers for the treatment of boiler water

1994-12-20

1996-06-18

Hruskoci, Peter A.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

134 2219, 210750, 252 82, 252180, 422 16, 422 17, C02F 512

Patent

active

055274684

ABSTRACT:
A treatment for controlling the deposition of scale imparting species on the structural surfaces of steam generating systems, wherein the aqueous medium is maintained at a pH which minimizes magnetite solubility, comprising the use of a combination of an organic amine and a nonionic polymer having the structure: ##STR1## wherein R.sub.1 is H or lower (C.sub.1 -C.sub.4) alkyl, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or a mixture of both, n is an integer of from 1 to about 40, and R.sub.3 is H, lower (C.sub.1 -C.sub.4) alkyl or an acetate.

REFERENCES:
patent: 4443340 (1984-04-01), May et al.
patent: 4659482 (1987-04-01), Chen
patent: 5124046 (1992-06-01), Sherwood et al.
patent: 5180498 (1993-01-01), Chen et al.
patent: 5242599 (1993-09-01), Chen et al.
patent: 5259985 (1993-11-01), Nakanishi et al.
patent: 5271847 (1993-12-01), Chen et al.

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