| 摘要 |
904,007. Cold separation of gas mixtures. LINDES EISEMASCHINEN A.G. GES FUR. Aug. 6, 1959 [Aug. 6, 1958; Aug. 11, 1958], No. 26914/59. Class 8(2). In a gas mixture e.g., deterium and hydrogen separating process wherein a refrigerant e.g., pure hydrogen is supplied as reflux to the head of the column 17, the refrigerant hydrogen is cooled in heat exchangers 3, 4 and is freed of impurities by passage through a pair of alternating adsorbers 7, 8 located upstream of alternating heat exchangers 12, 13 having paths 14, 15 in which the refrigerant is cooled prior to expansion in a valve 16 and entry into a condensing chamber 19 beneath the column 17 followed by further expansion at a valve 20 and entry into the head of column 17. Product deterium hydride-rich liquid hydrogen containing deterium leaves the base of column 17 whilst pure hydrogen gas is discharged through a duct 22 to a compressor 1 delivering at 165 atoms pressure into a cooling and purifying system which includes an exchanger 11. Feed hydrogen and deterium hydride mixture at 6 atoms pressure is supplied from an industrial gas plant 31 through a duct 32 and is cooled in one or other of regenerators 12, 13 not being cooled by a portion of returning hydrogen in a duct 35, expanded at a valve 33 and fed at 34 into the column 17. Return hydrogen leaving the regenerators 12, 13 also serves to cool exchanger 4 before being returned to the industrial gas plant 31. Extra cold is provided by nitrogen from a compressor 23 being expanded from 200 to 1 atms. pressure at a valve 25 and after traversing exchangers 3, 28, 11 and a separator 30 is returned to the compressor 23. Column 17 is enclosed in a gas tight slag-wool packed metal casing charged with helium, hydrogen or nitrogen surrounded by a concentric casing containing the regenerators and charged with slag wool and an inert gas e.g. nitrogen. |
