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

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

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

La Soudure Autogene Francaise

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

Richard Soula

Benoit Grand

Rémi Pierre Tsiava

Michel Arnout

Denis Cieutat

Henri Diot

Serge Suzon

Didier Marchand

Manuel Binoist

Jacques Dugue

Didier Lasnier

Marc Leturmy

Isabelle Hibon

Christel Champinot

Helmut Henrich

Jean-Christophe Charbonnel

Franz Lürken

Fr&eacute;d&eacute;ric Pioger

Lynda Mouloudj

Serge Morel-Jean

Michael Thomas

The invention relates to a method of processing images of at least one flame or of a scene in a furnace, characterized in that it comprises at least one sliding statistical processing of the images of the flame which are captured in the course of a sliding time interval, so as to eliminate the fast fluctuations therefrom.

Method and device for characterizing or controlling zones of temporal fluctuations of a scene

A method for partially oxidizing, in a Claus furnace, at least one gas containing hydrogen sulfide and ammonia with at least one gas rich in oxygen. The residual ammonia content at the outlet of the furnace is measured with a laser diode. Based upon this measurement, the flow rates of the ammonia containing gases and the oxygen rich gases may be modified to obtain the desired residual ammonia content.

Method for partially oxidizing a gas stream comprising hydrogen sulphide and ammonia

A gas burner for use with a Claus furnace made up of at least five concentric tubes and the spaces formed between them. The diameters of the tubes increase radially outward so that the first tube has a smaller diameter than the fifth tube. At the end of the burner closest to the furnace, the tube ends of the third, fourth, and fifth tubes lie in the same plane. The first and the second tubes are fastened together and capable of movement along the central longitudinal axis of the burner, but their ends closest the furnace are not capable of moving past the plane formed by the third, fourth, and fifth tubes. An injector is located between the first and second tubes at the end closest the furnace. The injector is oriented towards the periphery of the burner.

Burner and method for partly oxidising a gas stream comprising hydrogen sulphide and ammonia

Provided is an apparatus for grinding containers that contain a powder. The apparatus includes (i) a grinder, (ii) an enclosure for confinement of the powder released during grinding, (iii) a supply of an inert atmosphere, and (iv) a conduit which directs the inert atmosphere from the supply into the enclosure. Also provided is a process for grinding containers that contain a powder, the grinding being carried within an atmosphere of an enclosure.

Apparatus and process for grinding closed containers that contain a powder

The arc welding, with a refractory electrode, using alternating current, is performed with a gaseous protective mixture including at the location of the weld, at least 50%, typically between 60 and 80% of helium and at least 300 vpm, typically between 400 and 800 vpm, of nitrogen, the remainder being argon. Application to manual or automatic welding of aluminium components.

Process and gaseous mixture for arc welding of aluminium components

The arc welding, with a refractory electrode, using alternating current, is performed with a gaseous protective mixture employing, at the location of the weld, at least 60%, typically between 70 and 80% of helium and more than 1000 vpm, typically between 1100 and 1200 vpm, of carbon dioxide, the remainder being argon. Application to manual or automatic welding of aluminium components.

A torch includes a sheath enclosing various feed streams for active cutting fluids and cooling fluid, terminated by a distribution unit in which a cutting head is removably mounted. The cutting head includes a heating unit provided with channels for ejection of a combustible oxygen mixture, an intermediate insert forming the ejection nozzle for gaseous shielding oxygen, and a central insert for ejection of liquid oxygen under pressure.

Oxygen cutting torch with a liquid oxygen jet

A projection device for depositing by projection a fused coating material onto a substrate. The projection device includes a projection nozzle having a central part defining a central passage for the coating material to be fused and projected. The central passage opening at a distal end thereof into a central orifice. The central part being fitted in a peripheral part. Ejection openings of ducts of oxycombustible mixture being distributed around the central orifice according to at least two series which are alternatingly offset from one another with respect to a main axis of the nozzle. The ducts include channels which are milled in the periphery of the central part. The carrier gas contains between 1 and 10% oxygen with the remaining portion consisting of nitrogen. The carrier gas being supplied by a unit for the separation of inert gas from air by adsorption or permeation. The projection device is particularly suited for the formation of the anti-corrosive deposits based on zinc.

Process and apparatus for the formation of a deposit by projection of a

The present invention concerns a cutting head made of a cutting nozzle (2) with cutting oxygen duct (6) having radial ribs (11), the assembly being force fitted in a sheath (3) thus forming ducts of oxycombustible mixture (32). This nozzle which produces an improved heat dissipation can be made of reduced dimensions.

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Vertou, France

Richard Soula