Method for removal of scale

Details Method for removal of scale Method for removal of scale

1990-03-26

1991-06-04

Chaudhuri, Olik

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2219, 252 82, B08B 906, C02F 508

Patent

active

050210963

ABSTRACT:
A method for removal of scale from heat transfer equipment in which the scale contaminated surface is first contacted with a cleaning composition consisting essentially of an aqueous solution of hydroxyacetic acid and a polysaccharide gum and then contacted with a dilute aqueous solution of citric acid.

REFERENCES:
patent: 3003898 (1961-10-01), Reich
patent: 3003899 (1961-10-01), Eberhard
patent: 3072502 (1963-01-01), Alfano
patent: 4595517 (1986-06-01), Abadi
patent: 4802990 (1989-02-01), Inskeep
"The Kirk-Othmer Encyclopedia of Chemical Technology", vol. 13, 3rd Ed., John Wiley 1981, p. 94.
"Boosting Capacities with Chemicals", Chemical Engineering, Feb. 26, 1973, pp. 79-84.

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