Method of anticorrosive treatment for soft water boilers

Details Method of anticorrosive treatment for soft water boilers Method of anticorrosive treatment for soft water boilers

1987-10-15

1989-12-05

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

2523892, 422 17, 422 18, 422 19, C23F 1110

Patent

active

048851361

ABSTRACT:
A method of anticorrosive treatment for soft water boilers to prevent iron family metals from corrosion, especially from pitting corrosion, which is characterized by adding, to a boiler water system using soft water at a high temperature, (a) a specific amount of a phosphorus compound, (b) a specific amount of a carboxylic acid compound and (c) a specific amount of a metal compound.

REFERENCES:
patent: 3532639 (1970-10-01), Hatch
patent: 3671448 (1972-06-01), Kowalski
patent: 3738806 (1973-06-01), Feiler
patent: 3901651 (1975-08-01), Benner et al.
patent: 4018701 (1977-04-01), Ralston et al.
patent: 4108790 (1978-08-01), Foroulis
patent: 4138353 (1979-02-01), Lipinski
patent: 4303568 (1981-12-01), May et al.
patent: 4512552 (1985-04-01), Katayama et al.
patent: 4664884 (1987-05-01), Mullins et al.

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