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

L'air Liquide, Société Anonyme À Directoire Et Conseil De Surveillance Pour L'etude Et L'expolitation Des Procédés Georges Claude

Xavier Pontone

Bao V Ha

Maurice Grenier

Lasad Jaouani

Ovidiu Balog

Alain Guillard

Patrick Le Bot

A method of producing at least one air gas using cryogenic distillation is provided. The expanded streams coming from the two turbines are combined and then split into two fractions. The first fraction is sent to the medium-pressure column of the system in gaseous form, whereas the second fraction is returned to the cold end of the heat exchange line. At a temperature Tbelow &#x2212;100&#xb0; C. and above T, the second fraction is sent to a turbine where it expands up to a temperature T, forming an air stream. This air stream is then warmed in the heat exchange line before being discharged into the atmosphere, so that the distillation is not disturbed. A liquid product is withdrawn from the column system as final product. The sole liquid product from the apparatus is liquid oxygen, but of course other products may be produced.

Method and device for producing air gases in a gaseous and liquid form with a high flexibility and by cryogenic distillation

A process and apparatus for highly efficient production of industrial gases by the cryogenic distillation of air, wherein a feed stream of compressed air, is supercharged to high pressure, cooled, and mixed with various recycle streams of supercharged air, to regulate the expander turbine operating temperature. The need for pre-cooling equipment downstream of the supercharger, which is widely employed in industry to manage the temperature of the incoming compressed air stream, is eliminated.

Method and installation for producing, in gaseous form and under high pressure, at least one fluid chosen from oxygen, argon and nitrogen by cryogenic distillation of air

Growing community of inventors

Saint Maur des Fosses, France

Xavier Pontone