EP 1067345 A1 20010110 - Process and device for cryogenic air separation
Title (en)
Process and device for cryogenic air separation
Title (de)
Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
Title (fr)
Procédé et dispositif pour la séparation cryogénique des constituants de l'air
Publication
Application
Priority
DE 19930731 A 19990705
Abstract (en)
A first side stream (26) is heated in the main heat exchanger (30) upstream of its extraction point (28) at the first intermediate temperature. An Independent claim is included for corresponding plant to carry out the process. Preferred Features: Before heating, the first side stream is introduced into the cold end of the heat exchanger (30). A cooling air flow (23, 24) is cooled down in the main heat exchanger (30). It is extracted (24) at the cold end of the heat exchanger. It is re-supplied, at least in part, to the cold end of the main heat exchanger, as the first side stream (26). The cooling air flow (24), following extraction from the cold end of the heat exchanger is supplied to a phase separator, in a variant design. Further variants based on the foregoing principles are described. A turbine airflow (23, 25) is cooled in the main heat exchanger (30) to a further intermediate temperature, then expanded (36) to produce mechanical energy driving cold compression (29).
Abstract (de)
Das Verfahren und die Vorrichtung dienen zur Tieftemperaturzerlegung von Luft. Verdichtete und gereinigte Einsatzluft (9, 10, 20) wird in einem Hauptwärmetauscher (30) abgekühlt und mindestens zum Teil einer Rektifiziersäule (50) zugeführt (12, 33). Ein erster Teilstrom (26) der Einsatzluft wird dem Hauptwärmetauscher (30) zugeführt, mindestens zum Teil bei einer ersten Zwischentemperatur aus dem Hauptwärmetauscher entnommen (28) und einer Kaltverdichtung (29) zugeführt. Der erste Teilstrom (26) wird stromaufwärts seiner Entnahme (28) bei der ersten Zwischentemperatur im Hauptwärmetauscher (30) angewärmt (27). <IMAGE>
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 1/0012 (2013.01 - EP); F25J 1/0224 (2013.01 - EP); F25J 1/0234 (2013.01 - EP); F25J 3/04054 (2013.01 - EP US); F25J 3/0409 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04339 (2013.01 - EP US); F25J 3/04381 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 2205/04 (2013.01 - EP US); F25J 2230/20 (2013.01 - EP US); F25J 2245/40 (2013.01 - EP US); F25J 2270/02 (2013.01 - EP US)
Citation (search report)
- [A] EP 0689019 A1 19951227 - AIR LIQUIDE [FR]
- [PA] EP 0932003 A2 19990728 - AIR PROD & CHEM [US]
- [A] US 4224045 A 19800923 - OLSZEWSKI WALTER J, et al
- [DA] WO 9528610 A1 19951026 - AIR LIQUIDE [FR]
- [A] EP 0831285 A2 19980325 - BOC GROUP PLC [GB]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1067345 A1 20010110; EP 1067345 B1 20040616; AT E269526 T1 20040715; DE 59909750 D1 20040722; US 6336345 B1 20020108
DOCDB simple family (application)
EP 99121174 A 19991022; AT 99121174 T 19991022; DE 59909750 T 19991022; US 60976200 A 20000703