Method of cleaning using a foamed liquid

Details Method of cleaning using a foamed liquid Method of cleaning using a foamed liquid

1995-08-24

1996-09-03

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2214, 134 2219, 134 42, B08B 310, B08B 900, B08B 902, B08B 908

Patent

active

055519890

ABSTRACT:
A method of cleaning industrial equipment by utilizing an ebullated aqueous solution containing an amine oxide surfactant. The aqueous solution is preferably heated in a vessel, such as a batch coker fractionator in an oil refinery, to a temperature sufficient to ebullate or foam the solution and generate a substantial quantity of foam. The surfactant is carried by the foam bubbles and transported from the vessel to a contaminated surface outside of the cascading and circulating system of the vessel where the surfactant acts to remove the contamination.

REFERENCES:
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patent: 5356482 (1994-10-01), Mehta et al.
patent: 5389156 (1995-02-01), Mehta et al.
patent: 5462607 (1995-10-01), Mestetsky et al.

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