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

US6155079A · kind A · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Xavier Vigor · Viroflay, FR
• Patrice Ollivier · Paris, FR
• Antoine Willemot · Sceaux, FR
• Lionel Barry · Charenton-le-Pont, FR

Key dates

• Filing date: Feb 4, 1999
• Grant date: Dec 5, 2000
• Expiry date: Feb 4, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25J2240/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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).