Process for recovering metals from a stream rich in hydrocarbons and carbonaceous residues

US9157033B2 · kind B2 · utility

Assignee

• ENI S.P.A. · IT

Inventors

• Andrea Bartolini · San Donato Milanese, IT
• Paolo Pollesel · San Donato Milanese, IT
• Emilio Sentimenti · Ponzano, IT
• Michele Checchin · Preganziol, IT

Key dates

• Filing date: Dec 13, 2010
• Grant date: Oct 13, 2015
• Expiry date: Oct 31, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for recovering metals from a stream containing hydrocarbons and carbonaceous residues comprising sending the stream for extraction by mixing the stream with a hydrophilizing agent to remove the hydrophobic components of the stream, sending the mixture of the stream and hydrophilizing agent for separation, separating a liquid phase containing most of the hydrophilizing agent and hydrocarbons dissolved from a solid phase, sending the separated solid phase for leaching with an alkaline solution in the presence of air and/or oxygen, sending the leached mixture for separation, and separating the solid residue from the liquor.