Patents by Inventor Mayra MUCI-CASTANEDA

Mayra MUCI-CASTANEDA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Production of crystalline sodium bicarbonate
    Patent number: 10766782
    Abstract: A process for producing crystalline sodium bicarbonate, comprising: providing an aqueous sodium-bicarbonate containing liquor originating from a reactive crystallization step in which first sodium bicarbonate crystals are produced and recovered; feeding at least a portion of said aqueous sodium-bicarbonate containing liquor to a cooling crystallization unit to form second sodium bicarbonate crystals and produce a crystals slurry comprising the second sodium bicarbonate crystals; and withdrawing a portion of the crystals slurry from the cooling crystallization unit for the withdrawn second sodium bicarbonate crystals to be further processed. A portion of the second sodium bicarbonate crystals withdrawn from the cooling crystallization unit may be fed to a sodium bicarbonate reactive crystallization unit, to a caustic unit, or may be separated and dried.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: September 8, 2020
    Assignee: Solvay SA
    Inventors: James C. Kisielewski, David M. Hansen, Keith O. Hayes, Mayra Muci-Castaneda, Alain Vandendoren
  • PRODUCTION OF CRYSTALLINE SODIUM BICARBONATE
    Publication number: 20180230018
    Abstract: A process for producing crystalline sodium bicarbonate, comprising: providing an aqueous sodium-bicarbonate containing liquor originating from a reactive crystallization step in which first sodium bicarbonate crystals are produced and recovered; feeding at least a portion of said aqueous sodium-bicarbonate containing liquor to a cooling crystallization unit to form second sodium bicarbonate crystals and produce a crystals slurry comprising the second sodium bicarbonate crystals; and withdrawing a portion of the crystals slurry from the cooling crystallization unit for the withdrawn second sodium bicarbonate crystals to be further processed. A portion of the second sodium bicarbonate crystals withdrawn from the cooling crystallization unit may be fed to a sodium bicarbonate reactive crystallization unit, to a caustic unit, or may be separated and dried.
    Type: Application
    Filed: September 22, 2016
    Publication date: August 16, 2018
    Inventors: James C. KISIELEWSKI, David M. HANSEN, Keith O. HAYES, Mayra MUCI-CASTANEDA, Alain VANDENDOREN