Method and composition for removing sulfide-containing scale fro

Details Method and composition for removing sulfide-containing scale fro Method and composition for removing sulfide-containing scale fro

1980-10-03

1981-09-15

Albrecht, Dennis L.

Compositions

Dust suppressants for bulk materials, or processes of...

134 3, 134 41, 252 82, 252136, 252142, 252148, 252181, C02B 506, C11D 710, C11D 726, C23G 106

Patent

active

042896398

ABSTRACT:
An aqueous cleaning composition is described herein which contains glyoxylic acid dissolved in an aqueous non-oxidizing acid. This cleaning solution is effective in removing acid-soluble, sulfide-containing scale from metal surfaces (e.g. refinery equipment) without the evolution of gaseous hydrogen sulfide.

REFERENCES:
patent: 4220550 (1980-09-01), Frenier
Gregory, T. C.: Uses and Applications of Chemicals and Related Materials-vol. II, Reinhold Publishing, N.Y., 1944, p. 157.
The Merck Index-Ninth Edition, published by Merck, Rahway, N.J., 1976, p. 4353.

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