Patents Assigned to L'Air Liquide, Societe Anonyme A Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
  • Purification of a mixture of H/CO by catalysis of the NOx
    Patent number: 7588742
    Abstract: The invention relates to a method for purifying a gas flow containing hydrogen (H2) and carbon monoxide (CO), in addition to at least one nitrogen oxide (NOx), as impurities. According to said method, the gaseous flow is brought into contact with at least one catalyst containing copper and/or palladium, at a temperature between 100 DEG C. and 200 DEG C., in such a way as to eliminate at least part of the nitrogen oxide.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: September 15, 2009
    Assignee: L'Air Liquide, Societe Anonyme a Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Natacha Haik-Beraud, Serge Moreau, François Jantet, Audrey Moulin
  • Source liquid supply apparatus having a cleaning function
    Patent number: 7487806
    Abstract: A source liquid supply apparatus and method that avoids leaving source liquid-and/or cleaning fluid-derived residues in the vicinity of the connection region between the source liquid feed conduit and the source tank. A flow-switching mechanism is attached to the source tank of a source liquid supply apparatus. This flow-switching mechanism has a first port connected to the discharge port conduit of the source tank, a second port connected to a feed conduit, and a third port connected to an exhaust conduit. The first port can be closed by a valve member on a diaphragm disposed within a common compartment while communication is maintained between the second and third ports. A cleaning fluid source and a purge gas source are connected to the feed conduit. Purge gas and cleaning fluid fed into the feed conduit are discharged from the second and third ports and through the exhaust conduit.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: February 10, 2009
    Assignee: L'Air Liquide, Societe Anonyme A Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Olivier Letessier, Masao Kimura, Jean-Marc Girard, Akinobu Nasu
  • System for controlling cryogenic fluid flow rate and Joule-Thomson effect cooler comprising same
    Patent number: 7454916
    Abstract: A cryogenic fluid flow control system. This cryogenic fluid flow control system utilizes a first element forming a fluid inlet channel and an outlet passage that can be selectively blocked off by a second element that can move relative to the first element by an effect due to the difference in expansion coefficients between the materials of the first and second elements. The outlet passage utilizes a part extending transversely relative to the inlet channel and emerging on the periphery of an end part of the first element, the second element being placed at least partly around said end part.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 25, 2008
    Assignee: L'Air Liquide, Societe Anonyme A Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventor: Dominique Chazot
  • Installation for hydrogen production and methods for using same
    Patent number: 7452393
    Abstract: An installation and process for producing hydrogen, which includes a purification unit for purifying a hydrogen-rich synthesis gas and for producing hydrogen and a waste gas, along with the additional equipment required in order to continue operation in the event of a purification unit shutdown.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 18, 2008
    Assignee: L'Air Liquide, Societe Anonyme A Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Yves Engler, Edie Michalik, Jan Cobbaut, Olivier Gonfalone, Dirck Simons