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    • 4. 发明授权
    • Adsorptive oxygen enrichment of air with mixtures of molecular sieve
zeolites
    • 吸附氧富集空气与分子筛沸石混合物
    • US5656066A
    • 1997-08-12
    • US648524
    • 1996-05-13
    • Gerhard ReissLothar PuppeBruno Hees
    • Gerhard ReissLothar PuppeBruno Hees
    • B01D53/04B01D53/047B01J20/18C01B13/02
    • C01B13/027B01D53/02B01D53/04B01D2253/108B01D2253/1085B01D2256/12B01D2257/102B01D2259/403B01D53/047B01D53/0476C01B2210/0046Y10S95/902
    • An improved process for the oxygen enrichment of air by vacuum swing adsorption, pressure swing adsorption or a combination thereof, wherein the improvement comprises providing at least one packing at each of the air inlet to and air outlet from the adsorber, the packing at the air inlet side of the adsorber comprising Na-Ca zeolite X with an SiO.sub.2 /Al.sub.2 O.sub.3 ratio of 2.0 to 2.5 and with a CaO/Al.sub.2 O.sub.3 ratio of 0.4 to 0.75, the ratio being dependent upon the air inlet temperature, at an air inlet temperature of 20.degree. to 30.degree. C., the CaO/Al.sub.2 O.sub.3 ratio of the Na-Ca zeolite X at the inlet zone being 0.4 to 0.6, at an air inlet temperature of 30.degree. to 40.degree. C., the CaO/Al.sub.2 O.sub.3 ratio of the Ca zeolite X at the inlet zone being 0.55 to 0.65 and at an air inlet temperature of 40.degree. to 50.degree. C., the CaO/Al.sub.2 O.sub.3 ratio of the Na-Ca zeolite X at the inlet zone being 0.6 to 0.75, the packing at the air outlet side of the adsorber comprising Na-Ca zeolite A with a CaO/Al.sub.2 O.sub.3 ratio of 0.5 to 1.0 or Na-Ca zeolite X with CaO/Al.sub.2 O.sub.3 ratio of 0.4 to 1.0, above the CaO/Al.sub.2 O.sub.3 ratio of the Na-Ca zeolite X at the inlet side.
    • 通过真空变压吸附,变压吸附或其组合来改善空气富氧的方法,其中改进包括在吸附器的空气入口和空气出口的每个处提供至少一个填料,空气中的填料 吸附器的入口侧包含SiO 2 / Al 2 O 3比为2.0至2.5且CaO / Al 2 O 3比为0.4至0.75的Na-Ca沸石X,该比率取决于空气入口温度,入口温度为20℃ 在30〜40℃,进口温度为30〜40℃的Na-Ca沸石X的CaO / Al 2 O 3比为0〜30℃,CaO / Al 2 O 3比例为 入口处的沸石X为0.55〜0.65,入口温度为40〜50℃,入口区Na-Ca沸石X的CaO / Al2O3比为0.6〜0.75, 包含CaO / Al 2 O 3比例为0.5〜1.0的Na-Ca沸石A的吸附器的出气侧或Na-Ca zeo CaO / Al2O3比为0.4〜1.0,高于入口侧的Na-Ca沸石X的CaO / Al 2 O 3比例。