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AssigneeStauffer Chemical Company
InventorsChester G. Buffington, Herbert H. Fang, Barry A. Friedfeld, Thaddeus J. Kaniecki, John W. Kennedy, Chong-tan Liu, Morton Sternberg, Henry H. Feng, Paul Y. Chen, Waheed Mukaddam, Pattamadai E. Narasimhan
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An environmentally acceptable method for cleaning the interior of vessels comprises contacting the interior of a vessel with a solvent for the contaminant contained therein to produce a contaminated solvent, collecting the contaminated solvent from the vessel, separating essentially all of the contaminant from the contaminated solvent to recover essentially all of the solvent essentially free of the contaminant and produce a contaminant composition which is incineratable or can be made incineratable by blending with a combustible composition, such as fuel oil. The contaminant may be separated from the contaminated solvent by distillation; in which case the overhead product may be washed with sulfuric acid and then neutralized with a base.
A method of removing a contaminant from the inner surface of a vessel comprising
A method of removing a contaminant from the inner surface of a vessel comprising
Dependencies are inferred from the claim text.