Patents by Inventor Alain Trichet

Alain Trichet 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).

  • Method for ozone treatment of used paper
    Publication number: 20050155729
    Abstract: The invention concerns a novel method for ozone treatment of used paper which consists in transforming used paper into pulp in an aqueous medium, screening then de-inking said paper by liquid flotation, the method further comprising an ozone treatment step carried out at latest prior to the liquid flotation step.
    Type: Application
    Filed: February 13, 2003
    Publication date: July 21, 2005
    Inventor: Alain Trichet
  • Method for ozone treatment of a liquid phase containing solid particles
    Publication number: 20050109475
    Abstract: The invention concerns a novel method for ozone treatment 1 of a liquid phase containing solid particles, in particular paper pulp. Said method is characterized in that the liquid phase (3), containing 0.5 to 5 wt. % of solid, and the gas containing ozone are introduced in cocurrent into a tubular reactor (T).
    Type: Application
    Filed: February 12, 2003
    Publication date: May 26, 2005
    Inventor: Alain Trichet
  • Oxidation process of the wet oxidation or ozonization type
    Patent number: 6517729
    Abstract: The present invention relates to a process of oxidation, of the wet oxidation or ozonization type, of a liquid contained in a reactor. The gas of the gas headspace is aspirated into the liquid, and the portion which is not dissolved in the liquid is recovered in the gas headspace. The agitation means creates a flow of liquid immediately adjacent to the end of the duct opening into the liquid, and generates a gas/liquid dispersion in the zone, within which the liquid reacts with the gas, then conveys and ejects the said dispersion at its periphery, such that the gas is dissolved in the liquid in the zone extending from the agitation means to the surface of the liquid. The said process is particularly suitable for oxidations which make use of considerable quantities of oxygen or of ozone. It is particularly applied for the oxidation of papermaking liquors.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 11, 2003
    Assignees: L'Air Liquide - Societe Anonyme a Directoire et Counseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude, Robin Industries S.A.
    Inventors: Philippe Campo, Vincent Boisdon, Alain Trichet, Patrice Cognart, Florent Bouquet
  • Oxidation process of the wet oxidation or ozonization type
    Publication number: 20020110508
    Abstract: The present invention relates to a process of oxidation, of the wet oxidation or ozonization type, of a liquid contained in a reactor. The gas of the gas headspace is aspirated into the liquid, and the portion which is not dissolved in the liquid is recovered in the gas headspace. The agitation means creates a flow of liquid immediately adjacent to the end of the duct opening into the liquid, and generates a gas/liquid dispersion in the zone, within which the liquid reacts with the gas, then conveys and ejects the said dispersion at its periphery, such that the gas is dissolved in the liquid in the zone extending from the agitation means to the surface of the liquid. The said process is particularly suitable for oxidations which make use of considerable quantities of oxygen or of ozone. It is particularly applied for the oxidation of papermaking liquors.
    Type: Application
    Filed: February 16, 2001
    Publication date: August 15, 2002
    Inventors: Philippe Campo, Vincent Boisdon, Alain Trichet, Patrice Cognart, Florent Bouquet