Global Patent Index - EP 1318368 A1

EP 1318368 A1 2003-06-11 - Air separation method to produce gaseous product at a variable flow rate

Title (en)

Air separation method to produce gaseous product at a variable flow rate

Title (de)

Luftzerlegungsverfahren zur Produktion von gasförmigem Produkt mit variabeler Durchflussmenge

Title (fr)

Méthode de séparation d'air pour la production d'un produit gazeux à débit variable

Publication

EP 1318368 A1 (EN)

Application

EP 01310298 A

Priority

EP 01310298 A

Abstract (en)

A method of producing a gaseous product, for instance gaseous oxygen in accordance with a cyclical demand pattern having high and low periods of demand. During periods of high demand, liquid is vaporised against condensing air which is in turn stored. During low demand periods, product is accumulated and previously stored liquid air is introduced into the column. During both high and low periods of demand liquid product is drawn to reduce the percentage variance in the required flow rate to the booster compressor used in producing the air to be liquefied. Preferably, during periods of high demand, a turbine used in generating refrigeration can be turned down to increase the amount of air available for condensation and with a reduction in production of liquid product.

IPC 1-7 (main, further and additional classification)

F25J 3/04

IPC 8 full level (invention and additional information)

F25J 3/04 (2006.01)

CPC (invention and additional information)

F25J 3/0409 (2013.01); F25J 3/04103 (2013.01); F25J 3/04254 (2013.01); F25J 3/04296 (2013.01); F25J 3/04412 (2013.01); F25J 3/04509 (2013.01); F25J 3/04515 (2013.01); F25J 2210/40 (2013.01); F25J 2210/42 (2013.01); F25J 2215/40 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1318368 A1 20030611

INPADOC legal status


2004-10-06 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031212

2004-04-08 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2004-03-03 [AKX] PAYMENT OF DESIGNATION FEES

2003-06-11 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-06-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI