Air Liquide Industrial U.S. LP

Airgas Usa, LLC

Air Liquid Industrial U.S. L.p.

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

Charles L Caristan

Jean-Pierre Planckaert

Liquid cryogen from a tank having a head space pressure P1 is vaporized with a pressure building vaporizer to gaseous cryogen and the pressure of the gaseous cryogen is built to a pressure P2. The pressurized gaseous cryogen at pressure P2 is expanded across an expander to decrease its pressure and fed to a point of use at an installation including the vaporizer at a pressure P3. P2&#x2265;2&#xd7;P3. Energy from the expanded gas may be recovered in the form of mechanical energy, electrical energy.

Liquid cryogen vaporizer method and system

The present invention provides a process for laser cutting a metal plate that comprises a) providing at least a laser cutting device, b) providing a metal plate to be cut from a metal coil, c) providing at least a holding apparatus holding and maintaining the metal plate, d) cutting said metal plate by means of at least a laser beam delivered by said at least one laser cutting device In this process, during step d), the metal plate is first cut by a first line comprising at least a first cutting machine, into at least one peripheral blank, and at least one peripheral blank is subsequently fed to at least a second line comprising at least a second cutting machine, to be cut into several smaller individual final blanks. With regard to this process, the first line produces peripheral blanks faster than at least one second cutting machine of the second line can cut them into several smaller individual final blanks. During laser cutting in the second line, said peripheral blank is held and maintained in position by said at least one holding apparatus.

Process for laser cutting a metal plate

The present invention provides an apparatus for laser cutting that comprises a rigid support table frame having a X-axis and a Y-axis, and one or more bridge rail modules running across the Y-axis of the table frame, each bridge rail module comprising at least one hold-down device module. The present invention further provides a process for laser cutting a metal plate using this apparatus.

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Houston, TX, United States of America

Charles L Caristan