Mineral oils: processes and products – Refining – Metal contaminant removal
Reexamination Certificate
2005-10-18
2005-10-18
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Refining
Metal contaminant removal
C208S25100H, C208S20800M, C208S228000, C208S230000, C208S226000, C208S211000, C208S271000, C204S157150, C196S014520
Reexamination Certificate
active
06955753
ABSTRACT:
A process and apparatus to extract and recover heavy metals and sulfur from crude oil or petroleum fuel products including the steps of emulsifying the crude oil with an emulsifying agent, adding a leach solution to the emulsified crude oil and leaching the emulsified crude oil at elevated temperature and pressure to give a leached emulsified crude oil. The leach solution may be acid or alkali. A proportion of the leach solution is extracted for recovering heavy metals. There can also be a microwave hydro-treating step using hydrogen gas at a temperature below 220° C. to ensure there is no quality degradation in the crude feed to produce a desulfurized crude oil and a hydrogen sulphide by-product and recovering sulfur from the hydrogen sulphide by-product.
REFERENCES:
patent: 1686491 (1928-10-01), Hughes et al.
patent: 1785242 (1930-12-01), Becker et al.
patent: 2157315 (1939-05-01), Archibald
patent: 3095368 (1963-06-01), Bieber et al.
patent: 4234402 (1980-11-01), Kirkbride
patent: 4279722 (1981-07-01), Kirkbride
patent: 4408999 (1983-10-01), Nadkarni et al.
patent: 4539096 (1985-09-01), Rudnick
patent: 5087350 (1992-02-01), Paris-Marcano
patent: 5985137 (1999-11-01), Ohsol et al.
patent: 6068737 (2000-05-01), De Chamorro et al.
Griffin Walter D.
RMG Services Pty.Ltd.
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