The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2015
Filed:
Feb. 17, 2012
Miia Mujunen, Helsinki, FI;
Ossi Pastinen, Kantvik, FI;
Ilkka Lehtomaki, Helsinki, FI;
Simo Laakso, Turku, FI;
Perttu Koskinen, Helsinki, FI;
Miia Mujunen, Helsinki, FI;
Ossi Pastinen, Kantvik, FI;
Ilkka Lehtomaki, Helsinki, FI;
Simo Laakso, Turku, FI;
Perttu Koskinen, Helsinki, FI;
Neste Oil Oyj, Espoo, FI;
Abstract
The invention relates to a method for the recovery of oil from an aqueous solution containing oil and solids, as well as to the use of products obtained by this method. The method of the invention comprises at least the following steps of: Adjusting the oil- and solids-containing aqueous solution to a pH which is acidic, separating an oil- and solids-containing fraction from the acidic aqueous solution with an separation agent which is hydrophilic or assumes a hydrophilic character in response to water, recovering the oil- and solids-containing fraction separated by means of said separation agent, extracting oil away from the solids with a water-insoluble extraction agent, and recovering the oil-containing water-insoluble extraction agent.