EP 4211409 A1 20230719 - METHOD FOR OBTAINING ONE OR MORE AIR PRODUCTS, AND AIR FRACTIONATION PLANT
Title (en)
METHOD FOR OBTAINING ONE OR MORE AIR PRODUCTS, AND AIR FRACTIONATION PLANT
Title (de)
VERFAHREN ZUR GEWINNUNG EINES ODER MEHRERER LUFTPRODUKTE UND LUFTZERLEGUNGSANLAGE
Title (fr)
PROCÉDÉ D'OBTENTION D'UN OU DE PLUSIEURS PRODUITS À BASE D'AIR, ET INSTALLATION DE FRACTIONNEMENT D'AIR
Publication
Application
Priority
- EP 20020403 A 20200908
- EP 2021025287 W 20210728
Abstract (en)
[origin: WO2022053172A1] The invention relates to a method for obtaining one or more air products, in which method an air fractionation plant is used which has a column system (10) with a pressure column (11), wherein the pressure column (11) is operated in a pressure range of 4 to 7 bar, wherein air is fed to the column system (10) and is fractionated in the column system (10), wherein at least 90% of the total amount of air supplied to the column system (10) is compressed to a base pressure level that lies more than 5 bar above the pressure range at which the pressure column (11) is operated, wherein nitrogen-rich gas is extracted from the pressure column (11), and wherein, at least in a first operating mode, further air is compressed to a pressure level above the base pressure level, is expanded, and is warmed without fractionation in the column system (10). It is provided that, at least in the first operating mode, a proportion of the nitrogen-rich gas extracted from the pressure column (11) is fed to the further air upstream of the expansion. The present invention likewise relates to a corresponding air fractionation plant.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04012 (2013.01 - US); F25J 3/04084 (2013.01 - EP US); F25J 3/0409 (2013.01 - EP); F25J 3/04175 (2013.01 - EP); F25J 3/0429 (2013.01 - EP); F25J 3/04296 (2013.01 - EP US); F25J 3/04309 (2013.01 - EP US); F25J 3/04381 (2013.01 - US); F25J 3/04393 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP); F25J 3/04678 (2013.01 - EP US); F25J 3/04727 (2013.01 - EP); F25J 3/04812 (2013.01 - EP); F25J 2205/04 (2013.01 - EP); F25J 2215/40 (2013.01 - EP); F25J 2215/54 (2013.01 - EP); F25J 2240/46 (2013.01 - EP); F25J 2245/42 (2013.01 - EP US)
Citation (search report)
See references of WO 2022053172A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022053172 A1 20220317; CN 116018491 A 20230425; EP 4211409 A1 20230719; TW 202210772 A 20220316; US 2023358466 A1 20231109
DOCDB simple family (application)
EP 2021025287 W 20210728; CN 202180054142 A 20210728; EP 21751977 A 20210728; TW 110132814 A 20210903; US 202118044038 A 20210728