Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1978-10-10
1980-12-09
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 34, 134 36, B08B 310, B08B 900
Patent
active
042382440
ABSTRACT:
Deposits are removed from surfaces by contacting the deposits with a deposit-removing liquid composition containing a substance which produces gas bubbles, and thereby stirs the liquid, at the conditions at which the deposits are contacted with the liquid. Where the substance is one which is a gas at atmospheric conditions but dissolves in the liquid at a super-atmospheric pressure, such as carbon dioxide, the pressure exerted on the composition while contacting the deposits is repeatedly raised and lowered whereby the gaseous substance is repeatedly liberated from solution and placed back into solution to promote agitation of the liquid.
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Caroff Marc L.
Dougherty, Jr. C. Clark
Halliburton Company
Tregching John H.
Tregonig John H.
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