Method for demetallating petroleum streams (LAW639)

Details Method for demetallating petroleum streams (LAW639) Method for demetallating petroleum streams (LAW639)

1997-12-09

1999-06-15

Phasge, Arun S.

Electrolysis: processes, compositions used therein, and methods

Electrolytic material treatment

Organic

205695, 205696, 204514, 204559, 204567, C01G 3200

Patent

active

059118695

ABSTRACT:
The present invention provides for a process for electrochemically demetallating petroleum streams by contacting a hydrocarbon-soluble metals containing petroleum stream and an aqueous electrolysis medium with a low hydrogen overpotential metal cathode at an electric current and pH sufficient to demetallate the petroleum stream. The cathode voltage is from 0 V to -3.0 V vs. SCE at a pH of from 7 to 14. The cathode material typically is stainless steel, chromium, copper and nickel.

REFERENCES:
patent: 2140194 (1938-12-01), Yabroff et al.
patent: 4260484 (1981-04-01), Connolly
patent: 5529684 (1996-06-01), Greaney et al.

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