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

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

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

L&prime;air Liquide-Societe Anonyme a Directoire Et Conseil De Surveillance Pour L&prime;etude Et L&prime;exploitation Des Procedes Georges Claude

L'air Liquide, Société Anonyme Á Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procédés George Claude

Michel Devaux

Jean-Marc Peyron

Richard Dubettier-Grenier

Bernard Darredeau

Natacha Haik-Beraud

Jean-Yves Lehman

Sophie Lazzarini

Thomas Morel

Philippe Grigoletto

Jean-Marc Tsevery

Lian-Ming Sun

Daniel Gourdain

Fabrice Rivoal

Alain Briglia

Patrick Le Bot

Paul Terrien

Antoine Hernandez

Jean-Marc Bernhardt

Jean Billy

Ludovic Granados

Jorge Ernesto Tovar Ramos

Olivier De Cayeux

Bertrand Demolliens

Guillaume Teixeira

Nicolas Chantant

Marine Andrich

Bhadri Prasad

Herve Le Bihan

Stephane Crevatin

Sébastien Lichtle

Alexis Asse

Ingrid Berthaume

Delphine Pichot

Jean-François Rauch

Matthieu Muller

Nerve Le Bihan

Rawia Ali Said

Eduard Rosa

Sophie Lazarrini

Hervé Le Bihan

Antony Carafa

Baptiste Pajes

Jean-Baptiste Chaix

Stéphane Crevatin

Emeline Vandroux

Matilde Aires

Alain Guillard

A method for liquefying a hydrocarbon stream using at least one heat exchanger of the plate and fin type having at least one first part and one second part, the first and second parts being physically separate and each comprising at least one stack of a plurality of plates that are parallel to one another and to a longitudinal direction that is substantially vertical, the plates of the first part and the plates of the second part being stacked in a stacking direction that is orthogonal to the plates, the plates being stacked with spacing so as to define between them a plurality of first passages for the flow of at least part of a second two-phase cooling stream in the first part and a plurality of second passages for the flow of at least part of a first two-phase cooling stream in the second part.

Method for liquefying natural gas with improved exchanger configuration

A method for liquefying a hydrocarbon stream using a heat exchanger having a plurality of plates parallel to each other and to a longitudinal direction that is substantially vertical, the exchanger having a length measured in the longitudinal direction, the plates being stacked with spacing so as to define between them at least one first series of passages for the flow of at least part of a two-phase cooling stream vaporizing by exchanging heat with at least the hydrocarbon stream.

Method for liquefying natural gas with improved circulation of a mixed refrigerant stream

A method for liquefying a stream of hydrocarbons from a feed stream, including introducing the feed stream and a first cooling stream into a first heat exchanger, extracting a plurality of partial cooling streams obtained from the first cooling stream from the heat exchanger via separate outlets, introducing each partial cooling stream into an expansion element to produce a plurality of biphasic cooling streams at different pressures, introducing each biphasic cooling stream into a phase separator element to produce a gaseous cooling stream which is diverted from the first exchanger and a liquid cooling stream which is introduced into the first exchanger via respective inlets, evaporating each liquid cooling stream by heat exchange with at least the feed stream and the first cooling stream so as to extract a cooled hydrocarbon stream at the outlet from the first heat exchanger and to extract a plurality of evaporated cooling streams.

Method for liquefying natural gas with improved injection of a mixed refrigerant stream

A method for separating a mixture containing at least nitrogen and methane by cryogenic distillation in a first column operating in a first pressure and a second column operating at a second pressure lower than the first pressure, the mixture being separated in the first column to form a gas enriched in nitrogen and a liquid enriched in methane, at least a portion of the gas enriched in nitrogen being at least partially condensed in a heat exchanger and returned to the first column, the gas enriched in nitrogen is sent into the heat exchanger by the bottom, ascends in a first series of passages of the exchanger and condenses therein at least partially, the liquid formed descending in these passages of the first series and exiting by the bottom of the exchanger.

Method for separating a mixture containing at least nitrogen and methane

Method for filling a liquefied gas tank with pressurized liquefied gas from a source of liquefied gas using a filling apparatus comprising a transfer circuit that is provided with first and second pipes, each connecting between the source via respective first ends and the tank via respective second ends, third and fourth pipes each connecting between the first and second pipes, and a set of valves controlling flows of fluid in the pipes. The tank is depressurized and at least part of the circuit is cooled by transferring pressurized vaporization gas from the tank to the first end of the second pipes via the second end of the second pipe, the third pipe, the first pipe, and the fourth pipe.

Method for filling a tank with liquefied gas

A heat exchanger with several plates arranged in parallel is provided. The heat exchanger has a first series of passages for channeling at least one first fluid and a second series of passages for channeling at least one second fluid. The second fluid being in a heat-exchange relationship with at the first fluid. A mixer is arranged in the passage of the first series. The mixer has at least one first channel for the flow of a first phase of the first fluid in a flow direction. The mixer has at least one second channel for the flow of a second phase of the first fluid. The mixer has at least one opening fluidically connecting the first channel to the second channel.

Heat exchanger with liquid/gas mixer device having openings with an improved shape

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

Heat exchanger with plates comprising a first series of passages for conducting at least one frigorigenic fluid and a second series of passages for conducting at least one calorigenic fluid, each passage being defined between two successive plates and extending parallel to a longitudinal axis, at least one mixing device arranged in at least one passage of the first series, said mixing device being configured to receive a liquid phase and a gaseous phase of the frigorigenic fluid and to distribute a mixture of said phases into said at least one passage. According to the invention, at least one passage of the second series adjacent to said at least one passage of the first series comprises a heat exchange structure divided in the longitudinal direction into at least a first portion and a second portion which are juxtaposed along the longitudinal axis, the second portion extending facing at least part of the mixing device, and being configured so as to present a heat exchange coefficient which is lower than the heat exchange coefficient of the first portion.

Heat exchanger comprising a device for distributing a liquid/gas mixture

The invention relates to a facility for producing liquid helium from a source gas mixture substantially comprising nitrogen and helium. The facility includes a cryogenic purifier including a system for separating the nitrogen from the source gas mixture with a view to producing helium at a temperature lower than the temperature of the source gas. The facility also includes a helium liquefier that subjects the helium to a work cycle including, in series: compressing the helium, cooling and decompressing the compressed helium, and reheating the cooled, decompressed helium. The facility includes a helium transfer pipe connecting an outlet of the purifier to an inlet of the liquefier in order to transfer helium produced by the purifier into the work cycle of the liquefier. The facility is characterized in that the cryogenic purifier includes a decompression system that includes an inlet to be connected to a source of pressurized nitrogen gas. Said system for decompressing the nitrogen gas exchanges heat with the separation system in order to transfer cold from the decompressed nitrogen gas to said separation system.

Facility and method for producing liquid helium

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

Process for producing gaseous oxygen by cryogenic distillation of air, wherein a portion of the feed air flow is brought to a pressure P, by means of a first compressor, the suction temperature Tof which is between 0 and 50&#xb0; C., the gas at the pressure Pis cooled, in order to generate an air stream at the pressure Pand the temperature Tbetween 5 and 45&#xb0; C., a portion of the air compressed in the first compressor undergoes an additional compression step starting from the temperature Tand pressure Pto a pressure Pgreater than P, then is cooled, to the temperature Twhere Tand Tdiffer by less than 10&#xb0; C.

Process and apparatus for producing gaseous oxygen by cryogenic distillation of air

The invention relates to a cryogenic distillation apparatus for a gas mixture, including a purification apparatus for purifying a gas mixture in a system with a plurality of adsorbant bottles, a column system, a capacity, means for feeding a cryogenic liquid to the capacity, means for feeding a vaporized liquid from the capacity to a column of the system, a vaporizer in the capacity for vaporizing the contained liquid; means for feeding a calorigenic gas to the vaporizer, and means for drawing a liquid from the capacity.

Method and device for separating a gas mixture by cryogenic distillation

A vaporizer includes a plurality of U-shaped tubes contained in a vessel and are arranged in at least one plane. The vessel is closed at one end by a plate having openings adapted to mate with the end of the U-shaped tubes, and there is a dome covering the plate on the opposite side of the tubes. The dome is bounded by a wall forming an inlet chamber and an outlet chamber, the inlet chamber being split into two parts by a partition perpendicular to the plane of the tubes and to the wall to form a chamber for admitting liquid between the plate and the partition and an auxiliary chamber on the other side of the partition. The auxiliary chamber is configured to receive liquid from the admission chamber such that liquid from the outside arriving in the admission chamber enters the tubes via the bottom openings only.

U-tube vaporizer

The invention relates to a method for producing carbon monoxide consisting, during an adsorption step, in using N adsorbers (A,B), wherein N is equal to greater than two, each of which follows, at an offset; the same period T cycle during which adsorption and regeneration phases succeed each other, in exposing, at the beginning of the adsorption phase, each adsorber to an eluting phase during which only a part of a nominal flowrate of the mixture is transferred to the adsorber until said adsorber is substantially carbon monoxide saturated while at least the second adsorber is maintained in the adsorption phase and a purified gaseous mixture is partially liquefied for producing a liquefied gaseous mixture, in storing said mixture in a capacity () and in transferring the liquefied gaseous mixture from the capacity to at least one column () for the separation thereof into a carbon monoxide rich product and, during at least one part of the adsorber eluting phases, the liquid level in the container is decreased and during at lest one part of the cycle outside of the eluting periods, said level is increased.

Method and system for producing carbon monoxide by cryogenic distillation

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Creteil, France

Jean-Marc Peyron