Patents Represented by Attorney A. D. Ricci

Find this attorney in the Justia Lawyer Directory

  • Methods of extracting iron species from liquid hydrocarbons
    Patent number: 5078858
    Abstract: Methods of extracting iron species, such as iron naphthenate, and iron sulfides, from a liquid hydrocarbon, such as crude oil are disclosed. A chelant selected from oxalic or citric acid is added directly to the liquid hydrocarbon and mixed therewith. Then, wash water is added to form a water in oil emulsion. The emulsion is resolved, with iron laden aqueous phase being separated.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: January 7, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: Rosalie B. Hart, Paul V. Roling