EP 4184100 A1 20230524 - METHOD AND CRYOGENIC PRODUCTION ARRANGEMENT FOR PRODUCING A LIQUI LIQUID NITROGEN PRODUCT
Title (en)
METHOD AND CRYOGENIC PRODUCTION ARRANGEMENT FOR PRODUCING A LIQUI LIQUID NITROGEN PRODUCT
Title (de)
VERFAHREN UND KRYOGENE PRODUKTIONSANORDNUNG ZUR HERSTELLUNG EINES FLÜSSIGSTICKSTOFFPRODUKTS
Title (fr)
PROCÉDÉ ET AGENCEMENT DE PRODUCTION CRYOGÉNIQUE POUR LA PRODUCTION D'UN PRODUIT D'AZOTE LIQUIDE
Publication
Application
Priority
EP 21020577 A 20211118
Abstract (en)
A method for producing a liquid nitrogen product using a cryogenic production arrangement (1000) comprising one or more air separation units (100), the or each of the air separation unit(s) (100) comprising a rectification column system (10), a main heat exchanger (3), and a nitrogen compressor (5) is proposed, wherein nitrogen is, in the order indicated, withdrawn from the rectification column system(s) (10), heated in the main heat exchanger(s) (3) and fed to the nitrogen compressor(s) (5) of the air separation unit(s) (100) in a first compressor feed amount. The arrangement (1000) further comprises one or more and one or more nitrogen liquefaction units (300), and in that the arrangement (1000) is operated in a first mode of operation and a second mode of operation, wherein the first compressor feed amount is made to be larger in the second mode of operation as compared to the first mode of operation by increasing a production capacity of the air separation unit(s) (100), wherein nitrogen withdrawn from the nitrogen compressor(s) (5) of the air separation unit(s) (100) is, in the first mode of operation, partially fed to the to the nitrogen liquefaction unit(s) (300) in a liquefaction feed amount, wherein, in the first mode of operation, the liquefaction feed amount is partially liquefied in the nitrogen liquefaction unit(s) (300) forming the liquid nitrogen product and leaving an unliquefied remainder, and wherein the unliquefied remainder is at least in part fed to the nitrogen compressor(s) (5) of the air separation unit(s) in a second compressor feed amount. A corresponding arrangement (1000) is also part of the present invention.
IPC 8 full level
F25J 3/04 (2006.01); F25J 1/00 (2006.01); F25J 1/02 (2006.01)
CPC (source: EP)
F25J 1/0015 (2013.01); F25J 1/0035 (2013.01); F25J 1/0037 (2013.01); F25J 1/004 (2013.01); F25J 1/0042 (2013.01); F25J 1/0202 (2013.01); F25J 1/0234 (2013.01); F25J 1/0251 (2013.01); F25J 1/0288 (2013.01); F25J 3/04048 (2013.01); F25J 3/0409 (2013.01); F25J 3/04096 (2013.01); F25J 3/04224 (2013.01); F25J 3/0423 (2013.01); F25J 3/04236 (2013.01); F25J 3/04254 (2013.01); F25J 3/04284 (2013.01); F25J 3/0429 (2013.01); F25J 3/04315 (2013.01); F25J 3/04321 (2013.01); F25J 3/04351 (2013.01); F25J 3/044 (2013.01); F25J 3/04715 (2013.01); F25J 3/04727 (2013.01); F25J 3/048 (2013.01); F25J 3/04812 (2013.01); F25J 3/04824 (2013.01); F25J 3/04872 (2013.01); F25J 3/04878 (2013.01); F25J 3/04963 (2013.01); F25J 2200/06 (2013.01); F25J 2200/08 (2013.01); F25J 2200/20 (2013.01); F25J 2200/34 (2013.01); F25J 2200/72 (2013.01); F25J 2200/94 (2013.01); F25J 2210/42 (2013.01); F25J 2215/52 (2013.01); F25J 2215/56 (2013.01); F25J 2235/58 (2013.01); F25J 2240/40 (2013.01); F25J 2245/02 (2013.01); F25J 2245/40 (2013.01); F25J 2245/42 (2013.01); F25J 2245/50 (2013.01); F25J 2250/02 (2013.01); F25J 2250/20 (2013.01); F25J 2270/02 (2013.01); F25J 2270/06 (2013.01)
Citation (applicant)
- EP 2789958 A1 20141015 - LINDE AG [DE]
- "Industrial Gases Processing", 2006, WILEY-VCH, article "Cryogenic Rectification"
- HAUSSINGER ET AL.: "Ullmann's Encyclopedia of Industrial Chemistry", 2005, WILEY-VCH, article "Nitrogen", pages: 10
Citation (search report)
- [XAYI] CN 210119067 U 20200228 - LAN WENXU
- [Y] EP 3339784 A1 20180627 - LINDE AG [DE]
- [Y] WO 2021204424 A2 20211014 - LINDE GMBH [DE]
- [XAYI] "System and Method to Supply Gaseous Nitrogen from a LNG-based Liquefier Associated with Air Separation ED - Darl Kuhn", IP.COM, IP.COM INC., WEST HENRIETTA, NY, US, 28 December 2010 (2010-12-28), XP013143217, ISSN: 1533-0001
- [Y] ADRIAN CASPARI ET AL: "A flexible air separation process: 1. Design and steady-state optimizations", AICHE JOURNAL, JOHN WILEY & SONS, INC, US, vol. 65, no. 11, 17 July 2019 (2019-07-17), XP071010698, ISSN: 0001-1541, DOI: 10.1002/AIC.16705
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)
DOCDB simple family (application)
EP 22020547 A 20221111; EP 21020577 A 20211118