EP 0789208 A1 19970813 - Process and installation for the production of gaseous oxygen under high pressure
Title (en)
Process and installation for the production of gaseous oxygen under high pressure
Title (de)
Verfahren und Einrichtung zur Herstellung von gasförmigem Sauerstoff unter hohe Druck
Title (fr)
Procédé et installation de production d'oxygène gazeux sous haute pression
Publication
Application
Priority
FR 9601698 A 19960212
Abstract (en)
A process for producing a gas at a high pressure of at least 30 bars, using an air distillation unit (1) comprising a low pressure column (11) and a medium pressure column (10) where fractions of the air are delivered to the columns at different pressures after cooling, comprises dividing the air to be distillated into three streams: (i) a first medium pressure stream cooled to its dew point and delivered in the medium pressure column; (ii) a high pressure stream above at least 60 bars, being cooled and liquified (in 17), and after expansion (in 18), delivered in the double column (1); and (iii) an intermediate pressure stream, at least part of that stream being at an intermediate cooling temperature, expanded to medium pressure in a turbine (6) before being directed to the medium pressure column (10). The intermediate pressure is chosen such that the air is near its dew point before entering the turbine. Also claimed is apparatus for producing purified and pressurised gas.
Abstract (fr)
Ce procédé est du type dans lequel l'oxygène gazeux est directement produit sous la haute pression désirée par pompage d'oxygène liquide soutiré en cuve de la colonne basse pression (11). L'air à distiller est réparti en trois flux : un flux à la moyenne pression de la double colonne de distillation (1), un flux à une haute pression supérieure à 60 bars environ, et un flux à une pression intermédiaire qui, après refroidissement partiel, est détendu à la moyenne pression dans une turbine (8). La pression intermédiaire est choisie de manière que l'air turbiné se trouve au voisinage de son point de rosée à l'entrée de la roue de la turbine. Simultanément, du produit liquide est soutiré (en 24) de l'installation. Application aux installations produisant de grandes quantités d'oxygène gazeux sous une pression supérieure à 30 bars. <IMAGE>
IPC 1-7
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04084 (2013.01 - EP US); F25J 3/0409 (2013.01 - EP US); F25J 3/0423 (2013.01 - EP US); F25J 3/04296 (2013.01 - EP US); F25J 3/04375 (2013.01 - EP US); F25J 3/04412 (2013.01 - EP US); F25J 3/04678 (2013.01 - EP US); F25J 3/04727 (2013.01 - EP US); F25J 3/04739 (2013.01 - EP US); F25J 3/04781 (2013.01 - EP US); F25J 2240/10 (2013.01 - EP US); F25J 2250/20 (2013.01 - EP US); F25J 2250/50 (2013.01 - EP); F25J 2250/52 (2013.01 - EP); Y10S 62/94 (2013.01 - EP US)
Citation (search report)
- [X] EP 0689019 A1 19951227 - AIR LIQUIDE [FR]
- [X] US 5337570 A 19940816 - PROSSER NEIL M [US]
- [A] EP 0672878 A1 19950920 - BOC GROUP PLC [GB]
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
EP 0789208 A1 19970813; EP 0789208 B1 20030312; CA 2197156 A1 19970813; CN 1097715 C 20030101; CN 1168463 A 19971224; DE 69719578 D1 20030417; DE 69719578 T2 20031211; ES 2193336 T3 20031101; FR 2744795 A1 19970814; FR 2744795 B1 19980605; JP H09310970 A 19971202; KR 100466917 B1 20050422; KR 970062629 A 19970912; US 5735142 A 19980407; ZA 971031 B 19970825
DOCDB simple family (application)
EP 97400222 A 19970131; CA 2197156 A 19970210; CN 97110054 A 19970206; DE 69719578 T 19970131; ES 97400222 T 19970131; FR 9601698 A 19960212; JP 2709697 A 19970210; KR 19970003938 A 19970211; US 78864097 A 19970127; ZA 971031 A 19970207