Abstract: The invention relates to a method for storing and distributing liquefied hydrogen using a facility that comprises a store of liquid hydrogen at a predetermined storage pressure, a source of hydrogen gas, a liquefier comprising an inlet connected to the source and an outlet connected to the liquid hydrogen store, the store comprising a pipe for drawing liquid, comprising one end connected to the liquid hydrogen store and one end intended for being connected to at least one mobile tank, the method comprising a step of liquefying hydrogen gas supplied by the source and a step of transferring the liquefied hydrogen into the store, characterized in that the hydrogen liquefied by the liquefier and transferred into the store has a temperature lower than the bubble temperature of hydrogen at the storage pressure.
Type:
Grant
Filed:
September 24, 2019
Date of Patent:
April 9, 2024
Assignee:
L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Claude Georges Claude
Inventors:
Laurent Allidieres, Renan Luis De Souza Silva
Abstract: Fluid flow control valve comprising a tubular body extending in a longitudinal direction with a fluid inlet and a fluid outlet situated respectively at the two longitudinal ends of the body, the valve comprising a nozzle and a piston connected to the body, the piston being housed in the body, the nozzle being made up of a part provided with a fluid passage having a calibrated dimension, the passage emerging at one end of the nozzle and forming a seat, said seat being situated against a terminal end of the piston forming a shutter preventing the flow of fluid in the closed position of the valve, the piston comprising a body defining a passage for the fluid in the body for the flow of the fluid between the inlet and the outlet, the body of the valve consisting of a material having a different expansion coefficient from the piston or the nozzle, the valve comprising a heating member which, depending on the heating power delivered, makes it possible to separate the end of the nozzle and the piston by differential
Type:
Grant
Filed:
May 27, 2022
Date of Patent:
March 5, 2024
Assignee:
L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Claude
Abstract: A corrosion resistant gas cylinder and gas delivery system includes an electroless nickel-phosphorous layer overlying the inner surface of a steel alloy cylinder. The nickel-phosphorous layer has a thickness of at least about 20 micrometers and a porosity of no greater than about 0.1%. The electroless nickel-phosphorous layer has a phosphorous content of at least about 10% by weight and a surface roughness of no greater than about 5 micrometers. Prior to introducing liquefied gas into the gas cylinder, a cleaning process is carried out using a two-step baking process to clean the surface of the nickel-phosphorus layer. The nickel-phosphorous layer substantially reduces the contamination of liquefied corrosive gasses stored in the gas cylinder by metal from the steel wall surface underlying the nickel-phosphorous layer.
Type:
Grant
Filed:
March 22, 2001
Date of Patent:
April 2, 2002
Assignees:
L'Air Liquide, Societe Anonyme pour l'Etude et, l
'Exploitation des Procedes Claude of France, American Air Liquide Inc.
Inventors:
Alan D. Zdunek, Eugene A. Kernerman, William Korzeniowski