Patents Assigned to Austral-Pacific Fertilizers Ltd.
  • Process for enhanced urea production
    Patent number: 5053538
    Abstract: A process for the production of urea comprising the steps of reacting carbon dioxide and ammonia to form ammonium carbamate and subsequent decomposition of ammonium carbamate to form a reaction mixture comprising urea and water, wherein the reaction mixture is contacted with one side of a semi-permeable membrane, and a drying fluid capable of removing water and possibly other reaction products(s) from the reaction mixture is contacted with the other side of the semi-permeable membrane.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: October 1, 1991
    Assignee: Austral-Pacific Fertilizers Ltd.
    Inventors: Max Linton, Anthony M. Brown