| 摘要 |
<p>1,022,268. Air rectification process. PHILIPS GLOEILAMPENFABRIEKEN N. V. Jan. 21, 1964 [Jan. 24, 1963], No. 2620/64. Heading F4P. Prior to rectification in a column 5, 6, Fig. 1 (not shown), air admitted through inlets 11 to a casing 10 is freed of water vapour and carbon dioxide by solidification and collection on a metal gauze 8 in thermal contact with a cage of tubes 2 depending from the boiler 1 of the column and hydrocarbons and nitrous oxide vapours are solidified and collected on spaced metal gauzes 18 within an annular space formed by the lower column portion 5 and a surrounding tube the upper gauzes 18 being in thermal contact with a trough 23 of washing liquid leaving the upper portion 6 of the column and supplied thereto through a duct 19 connected to the boiler 1 and cooled by a cold gas refrigerator. Both column portions 5, 6 are packed with rings 30, 31 above which are located liquid distributers 20, 21. Product oxygen gas is discharged through a duct 9.</p> |
