Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1995-10-25
1997-03-18
Soderquist, Arlen
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 221, 134 2211, 134 2212, 134 2214, 134 2218, 134 40, 208188, 252331, B08B 900, C10G 3304
Patent
active
056118694
ABSTRACT:
The present invention provides for methods and compositions for cleaning oil and sludge from a refinery vessel and for separating the resulting emulsion formed by the cleaning composition and the oil and sludge. The cleaner composition uses an aqueous solution of an alkylphenol-formaldehyde resin alkoxylate, a poly(ethylene glycol)dialkyl ester and a solvent selected from the group consisting of a C.sub.1 to C.sub.8 alcohol, glycol, and glycol ether.
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BetzDearborn Inc.
Ricci Alexander D.
Soderquist Arlen
Von Neida Philip H.
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