Process for the thermo-chemical cleaning of storage tanks

Cleaning and liquid contact with solids – Processes – Including melting

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134 19, 134 20, 134 221, 134 2211, 134 2212, 134 2213, 134 2214, 134 2216, 134 2217, 134 2218, 134 2219, 134 26, 134 28, 134 29, 134 34, 134 35, 134 36, 134 40, B08B 700, B08B 900, C23G 100, F23J 100

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055803911

ABSTRACT:
A process for the thermo-chemical cleaning of storage tanks which contain sludges from petroleum oil or related products. The process is carried out by the combined action of an organic solvent and the generation of nitrogen gas and heat, whereby produced heating in situ, agitation by turbulence and flotation of the fluidized sludge, which after being collected and transferred to tanks or desalting units can be reintroduced in the usual refining flow.

REFERENCES:
patent: 4482016 (1984-11-01), Richardson
patent: 4846277 (1989-07-01), Khalil et al.
patent: 5085710 (1992-02-01), Goss
patent: 5183581 (1993-02-01), Khalil et al.
"Crude oil Tank-Cleaning Process Recovers oil, Reduces Hazardous Wastes," Oil & Gas Journal, Dec. 13, 1993, pp. 35-39; Goss, Davis, Tyler.
"Better ways to clean crude storage tanks and desalters" by J. W. Barnett, Hydrocarbon Processing, Jan. 1980, pp. 82-86.
Discussion of the T.H.O.R. Process, 4 pages.
Discussion of the Super Macs Process, 4 pages.

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