Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1979-09-18
1981-03-10
Hruskoci, Peter A.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
252180, 210700, C02F 514
Patent
active
042552591
ABSTRACT:
This invention relates to an improved method for inhibiting deposition of scale in aqueous systems. More specifically, it relates to the use of small quantities of an improved composition for preventing formation of scale and sludge deposits in steam generating boilers. The composition is characterized by the fact that by using a plurality of selected ingredients a synergistic effect is obtained. The ingredients comprise a copolymer of styrene sulfonic acid and maleic anhydride or maleic acid, along with a water soluble organophosphonic acid compound.
REFERENCES:
patent: 3072618 (1963-01-01), Turbak
patent: 3289734 (1966-12-01), Robertson
patent: 3630937 (1971-12-01), Baum et al.
patent: 3715307 (1973-02-01), Johnson et al.
patent: 3890228 (1975-06-01), Hwa et al.
patent: 4048066 (1977-09-01), Cuisia et al.
patent: 4118318 (1978-10-01), Welder et al.
Cuisia Dionisio G.
Hwa Chih M.
Chemed Corporation
Harness Charles L.
Hruskoci Peter A.
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