L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Air Liquide Advanced Technologies U.S. LLC

Pierre-Philippe Guerif

Alain Guillard

Vincent Follaca

Joseph T Stroffolino, Iv

Paul Terrien

Michael A Turney

Paul Kong

Guillaume Rodrigues

Alexander Roesch

Aaron Harris

Louis Debesombes

Oriane Farges

Abigail Bonifacio

Yufeng Qian

Jorge Lopez

Youssef Tazi

Guillaume Rodriges

Wendy May Yee Yip

Gilles Flavien

The present invention relates to a method for improving stability of a hydrogen gaseous dispensing system. An example of such system is hydrogen powered vehicle fuel filling station. Vehicle is filled by multiple high pressure gaseous hydrogen tubes, usually one tube at a time. For safety and reliability reasons a control requirement for such system is to be able to deliver the hydrogen at constant rate to the fuel tank so that its rate of pressure increase stays constant during entire filling process. A dual pressure regulator arrangement is proposed to better maintain flow continuity and/or pressure during tube switching.

Pressure or flow regulation method for gaseous hydrogen dispensing system

A method of maintaining a syngas composition ratio during an upset condition, including detecting a reduction in the import carbon dioxide flow rate with a carbon dioxide import stream flow sensor, evaluating the reduction in carbon dioxide flow rate or carbon dioxide pressure in a controller, performing one or more predetermined corrective actions as instructed by the controller. Wherein the predetermined corrective actions are chosen from the following: opening a CO2 import stream flow valve, opening a hydrocarbon and steam stream feed valve, opening a CO2 backup stream control valve, opening a syngas backup letdown valve, and starting a composition adjustment unit.

Carbon dioxide buffer vessel process design

A method and system for purification of helium and COfrom a stream containing at least Helium, CO2, nitrogen or methane uses a combination of cryogenic, membrane and adsorption technologies.

Method and system for purification of helium using cryogenic, membrane, and adsorption techniques

A method of integrating a fuel cell with a steam methane reformer is provided. The system includes at least one fuel cell including an anode and a cathode, and a steam methane reformer including a syngas stream, and a flue gas stream. The method includes introducing at least a portion of the flue gas stream to the cathode, thereby producing a CO2 depleted flue gas stream and introducing a hydrocarbon containing stream to the anode, thereby producing an electrical energy output and a carbon dioxide and hydrogen containing stream from the fuel cell.

Method of integrating a fuel cell with a steam methane reformer

A method for decreasing the SFFC of a steam reforming plant, including establishing a base operating mode. Then modifying the base operating mode by introducing the shift gas stream into a solvent based, non-cryogenic separator prior to introduction into the pressure swing adsorption and introducing the compressed hydrogen depleted off-gas stream in a membrane separation unit, wherein the membrane is configured to produce the hydrogen enriched permeate stream at a suitable pressure to allow the hydrogen enriched permeate stream to be combined with carbon dioxide lean shift gas stream, prior to introduction into the pressure swing adsorption unit without requiring additional compression. Thereby establishing a modified operating mode. Wherein said pressure swing adsorption unit has a modified overall hydrogen recovery. Wherein said modified operating mode has a modified hydrogen production, a modified hydrogen production unit firing duty, a modified SCO2e, and a modified SFFC.

Method for increasing efficiency and reducing emissions in a steam reforming plant

A method for liquefying ammonia can include the steps of: providing a pressurized carbon dioxide stream from a power generating facility; expanding the pressurized carbon dioxide stream to a lower pressure that is sufficient to produce a dual phase carbon dioxide fluid; introducing the dual phase carbon dioxide fluid to a gas-liquid separator; withdrawing a liquid stream from the gas-liquid separator; and liquefying an ammonia gas stream in an ammonia liquefier by indirect contact with the liquid stream from the gas-liquid separator, thereby forming a liquid ammonia stream and a gaseous carbon dioxide stream.

Method for liquefying ammonia

A method of temperature balancing for thermal integration of an air separation unit (ASU) with an oxycombustion power generation system, including compressing air through a plurality of compression stages, and routing a first stage compressed air stream through a first heat exchanger in heat exchange communication with a subsequent stage compressed air stream to lower the first stage compressed air stream temperature and increase the temperature of a subsequent stage compressed air stream.

Temperature balancing for thermal integration of an air separation unit (ASU) with a power generation system

A method for the production of liquefied natural gas (LNG) using a cold fluid provided from a cryogenic unit, such as an air separation unit or nitrogen liquefier, is provided. The method may include the steps of: withdrawing a nitrogen stream from a cryogenic unit, wherein the nitrogen stream is at a temperature between about &#x2212;155&#xb0; C. to about &#x2212;193&#xb0; C.; and liquefying a natural gas stream in a natural gas liquefaction unit using the nitrogen stream from the cryogenic unit.

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Houston, TX, United States of America

Pierre-Philippe Guerif