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

Antoine Willemot

Daniel Guerin

Lionel Barry

Pierre Karinthi

Xavier Vigor

Alain Villermet

Michel Gastiger

Frederic Bernard

Pierre Didier

Valerie Borg

Dominique Jouvaud

Christian Larquet

Pascal Bouard

Laurent Ferenczi

Bruno Marie

Christophe Charrier

Jean-Louis Gelot

Frédéric Rotman

Patrice Ollivier

Patrick Dilly

Fr Ed Fillet

Pierre-Olivier Dolle

V&eacute;ronique Dulphy Vigor

Francedillaois Fuentes

Franciscus Slootman

Michel-Jacques Gastiger

An outfit for the construction of several complex industrial installations for the treatment of industrial fluids includes several assemblies of several functional modules, each adapted to perform an elementary operation. Each functional module includes at least one input and at least one output, as well as a local guide unit of the functional module provided with a communication interface. All the functional modules have the same assembly to carry out the same elementary operation and are standard. The functional modules are adapted to be associated functionally with each other in installations. The outfit moreover includes, for each industrial installation, a single central guide unit, adapted to guide the functional modules of the associated industrial installation.

Construction kit and method for constructing several complex industrial installations

The invention relates to a device for measuring the fluid consumption of a user over a given measurement time, including a volumetric meter ( ) connected to a central information processing unit ( ). This unit is designed to take a series of readings at successive intervals in said measurement time, so as to compare each reading with a reference value that corresponds to a predetermined nominal consumption threshold and thus from this deduce the quantity consumed over said measurement time corresponding to consumption with a flow rate higher than the nominal consumption threshold.

Device for measuring the fluid consumption of a user over a given time

The plant comprises, on site, a compressed-air provision and distribution system (L.sub.A) with at least one dedicated air compressor (CO2, CO3), an air-gas production and provision system (L.sub.G) comprising an air treatment unit (S), with a reservoir R of the said air gas and normally fed by a compressor (CO1). In temporary operating mode, with one air compressor (CO2) off-line, the compressed air from the compressor (CO1) of the air gas provision system (S) is at least in part diverted (C), typically with pressure reduction (D), to sustain the production of the compressed air system (L.sub.A), the air gas then being at least in part provided by the reservoir (R).

Combined process and plant for producing compressed air and at least one

The gas mixture leaving the laser apparatus (1) is recycled to a permeator (45) which separates it into two flows. The discharge from the permeator is expanded in an expansion turbine (27) coupled to a compressor (35) for exerting suction on the recycled mixture, which makes it possible to obtain the desired reduced pressure in the laser apparatus. Applications to power laser apparatuses with nitrogen/carbon dioxide mixture, intended for cutting materials.

Device for feeding a gas-mixture laser apparatus, and laser apparatus

Process and apparatus for the separation of at least one gas from an entering gaseous mixture (1), of the type in which a membrane separation is conducted with at least two successive membrane separators in the following manner: the entering mixture is passed through a first membrane separator (2) operating at a first operating temperature and all or a portion of the residual mixture (5) from this first membrane separator is passed through a second membrane separator (3) operating at a second operating temperature. A mixture enriched in the gas is obtained from the permeate outlet (6, 4) of each of these two separators. Two separators are used whose selectivities for the gas are different. These may be membranes of different type, or membranes of the same type, if the first operating temperature is different from the second operating temperature.

Process and apparatus for separation of a gaseous mixture by successive

The invention concerns a process for depositing a thin layer of silicon oxide bonded to a substrate of a polymeric material comprising, concomitantly or consecutively (1) subjecting a surface of the substrate to an electrical discharge with dielectric barrier and (2) exposing said surface of the substrate to an atmosphere containing a silane, thus forming a deposit of silicon oxide bonded to said surface of the substrate Application to the production of sheets or films useful for example as food wrapping.

Process of depositing a layer of silicon oxide bonded to a substrate of

The invention relates to a process for producing disilane from monosilane, according to which gaseous monosilane is passed into a reaction zone where it is subject to an electric discharge generated by a high-frequency current.

Process for preparing disilane from monosilane by electric discharge and

A process for producing disilane from monosilane comprising introducing monosilane into a reaction zone in which the monosilane is subjected to an electric discharge generated by a high frequency current. The monosilane is mixed with at least one inert gas selected from the group consisting of helium and argon. The pressure of the gaseous mixture in the reaction zone is between 0.1 and 3 bar, and the gaseous mixture is contacted in the reaction zone under electric discharge with a wall cooled to a temperature which is sufficiently low for the saturation vapor pressure of the disilane to be negligible, but not low enough for the monosilane to condense at the working partial pressure. Apparatus for conducting this process is provided.

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Sceaux, France

Antoine Willemot