Process to refine petroleum residues and sludges into asphalt an

Details Process to refine petroleum residues and sludges into asphalt an Process to refine petroleum residues and sludges into asphalt an

1997-09-19

1999-07-13

Myers, Helane

Mineral oils: processes and products

Treatment of refining sludge

208 33, 208 24, 208 39, 208 43, C10G 1700

Patent

active

059221895

ABSTRACT:
A process for significantly decreasing processing time, reducing capital costs, increasing yield, improving quality, and improving the safety of refining petroleum residues and sludges generated by the oil producers, refineries and re-refiners comprising the steps of heating under vacuum the petroleum residues and sludges with steam or inert gas injection or both until a temperature ranging from between 680.degree. F. to 1000.degree. F. is attained and holding the mixture at this temperature for a short residence time of from less than an hour to abut 6 hours while vacuum and sparging are being carried out to generate asphalt. Volatile products are condensed to produce fuel, waxy oil and can be further processed to produce refined fuel, wax and dewaxed oil.

REFERENCES:
patent: 3919072 (1975-11-01), Pitchford
patent: 4126538 (1978-11-01), Goudriaan
patent: 4925588 (1990-05-01), Kappenbeger
patent: 5288392 (1994-02-01), Santos
patent: 5514272 (1996-05-01), Santos
patent: 5573656 (1996-11-01), Santos

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