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

L'air Liquide Société Anonyme Pour L'etude Et L'exploitation Des Procédés Georges Claude

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Lian-Ming Sun

Christian Monereau

Jean-Marc Peyron

Vincent Gueret

Benjamin Morineau

Fabrice Rivoal

Patrick Le Bot

Dominique Rouge

Jean Gallarda

Bernard Fraioli

Georges Kraus

Eric Biret

Jan Cobbaut

Yves Torre

Gregory Demar

Chuan-Min Zhuo

Stephane Chantagrel

Celine Graciannette

A gas processing vessel of cylindrical shape having a cylindrical shell of the vertical axis, a gas distribution device and a first particulate material, the distribution device being fixed in the vessel next to a gas inlet or outlet orifice recessed into a lower end wall, a cover being designed to be in contact without a weld with the lower end wall and having a diameter greater than or equal to one third of the diameter of the vessel, a second particulate material with an equivalent diameter De greater than or equal to 10 mm and greater than the dimensions of the openings in the cover, and a means for centering the cover above the inlet or outlet orifice, the means being fixed to the pipe that is connected to the orifice.

Device for distributing gas in a gas processing vessel comprising a particulate material

A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, thereby limiting or preventing the migration of particles between the layers.

Device for limiting or eliminating the migration of particles between two layers

A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, so as to limit or prevent the migration of particles between the layers.

Device made of fabric for limiting or preventing the migration of particles between two layers

In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0&#xb0; C., this gas originating from a cryogenic distillation air separation unit.

Method for reheating an atmospheric vaporizer using a gas originating from a cryogenic air separation unit

Method for reheating an atmospheric vaporizer using a gas originating from a cryogenic air-separation unit

The regeneration phase of the adsorption cycle includes a depressurization step, a heating/elution step, during which the bed is purged with a hot heating/elution gas, and a cooling/elution step, during which the bed is purged with a cold cooling/elution gas. The cooling/elution step is terminated while the cooling/elution gas leaving the bed is at a temperature markedly higher than the temperature of the gas to be treated and the adsorption phase comprises an initial adsorption step during which the bed is cooled down to the low adsorption temperature due to the effect of the gas to be treated.

Process for the treatment of a gas by temperature swing adsorption

A PSA, especially VSA, plant for separating a gas stream, operating in a production cycle and comprising at least one adsorber, preferably two or three adsorbers, and several valves having long and heterogeneous operating times. More specifically, the average operating time (&mgr;) of the valves is such that: 0.5 s<&mgr;<2 s and the operating time (&Dgr;t) of each of the valves is such that: &mgr;&minus;x<&Dgr;t<&mgr;&plus;x, with 0.1 s<x<0.5 s. The invention also relates to the use of such a PSA plant for producing a gas stream rich in oxygen, in nitrogen or in hydrogen, particularly a stream comprising more than 80% oxygen, which is then sent to an oxygen-consuming plant chosen from a combustion furnace, a paper-pulp manufacturing unit and a water treatment unit.

PSA plant using valves having long and heterogeneous operating times

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Villebon sur Yvette, France

Lian-Ming Sun