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 Pour L'etude Et L'exploitation Des

Vincent Gourlaouen

Francois Remy

Christian Coddet

Philippe Poynot

Francis Remy

Bernard Hansz

Sébastien Cadalen

Han Lin Liao

Francedillaois Pesme

Romain Ravet

Rémy Vandendriessche

Post-mix burner and use of same for generating a flame curtain, the burner having a longitudinal central dividing wall () terminating in a wall head () towards the burner top (), an oxidant inlet compartment () and an oxidant outlet compartment () on a first side of the central wall (), a fuel inlet compartment () and a fuel outlet compartment on the opposite side of the central wall (); the wall head () presenting a first set of oxidant outlet passages () and a second set of fuel outlet passages () terminating respectively in first oxidant ejection openings () and second fuel ejection openings () in an ejection surface () at the burner top (), the oxidant and fuel ejection openings () each extending in the longitudinal direction along the ejection surface ().

Compact flame-curtain burner

A plasmagenic gas comprises a ternary mixture of helium, argon and hydrogen. The gas contains less than 30% helium, at least 55% argon, and from 5.5 to 15% hydrogen. The gas is energized to form a plasma. A powder of a refractory or metallic material is introduced into the plasma.

Method of using a ternary gaseous mixture in the plasma projection of refractory materials

A plasmagenic gas comprising a ternary mixture of helium, argon and hydrogen. The gas contains less than 30% helium, at least 55% argon, and from 5.5 to 15% hydrogen. The gas is useful in a thermal treatment process, such as the plasma projection of a refractory or metallic material.

Ternary gaseous mixture

Heat-treatment device which includes a cooling unit comprising delivery nozzles which deliver at least one coolant, characterized in that it furthermore comprises a shielding element designed so as to maintain a gaseous shielding atmosphere around at least part of the delivery nozzles.

Heat-treatment device and process

Growing community of inventors

Houilles, France

Vincent Gourlaouen