Solvent for removing iron oxide deposits

Details Solvent for removing iron oxide deposits Solvent for removing iron oxide deposits

1985-02-04

1986-11-18

Silverberg, Sam

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

252 82, 252142, C23G 102

Patent

active

046233997

ABSTRACT:
Liquid and foam formulations useful for removing iron oxide deposits, for example from heat transfer equipment, comprising an organic solution or foam of N-hydroxylethyl ethylenediamine triacetic acid and an organic acid (for example, formic acid); and a method of removing iron oxide deposits from encrusted equipment surfaces by injecting the liquid or foam formulation, preferably also containing a corrosion inhibitor, into equipment to be cleaned, and circulating the liquid or foam formulation.

REFERENCES:
patent: 2882134 (1959-04-01), Spring
patent: 3510351 (1970-05-01), Dillen
patent: 3527609 (1970-09-01), Vinso
patent: 3721629 (1973-03-01), Goodenough
patent: 4430128 (1985-02-01), Frenier

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