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ADSORBENT FOR OXYGEN PSA(PRESSURE SWING ADSORPTION), ITS PREPARATION AND PREPARATION OF OXYGEN USING IT
ADSORBENT FOR OXYGEN PSA(PRESSURE SWING ADSORPTION), ITS PREPARATION AND PREPARATION OF OXYGEN USING IT
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机译:变压吸附吸附氧的吸附剂及其制备与制氧
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摘要
PROBLEM TO BE SOLVED: To improve selective adsorptivity of nitrogen by a method wherein a crystalline zeolite X with a specified molar ratio is used and lithium cation and cesium cation each with a specified amt. are incorporated in a crystalline zeolite X adsorbent being ion-exchanged with lithium cation. ;SOLUTION: In preparing a zeolite adsorbent used for preparing oxygen gas, a crystalline zeolite X with a molar ratio of SiO2/Al2O3 of not larger than 3.0 is used and at least 90% cations associated with its Al2O3 tetrahedron unit are ion-exchanged. Thereafter, ion exchange is performed again with a mixed salt aqueous soln. wherein sodium cation is an essential cation and either monovalent cation of cesium cation or rubidium cation and/or a mixed cation thereof are incorporated with at least 1% and less than 5%. In addition, after lithium cation associated with Al2O3 tetrahedron unit is made to be at least 80% and less than 88%, it is washed, dried and activated.;COPYRIGHT: (C)1998,JPO
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机译:解决的问题:通过一种方法来提高氮的选择性吸附性,其中使用具有特定摩尔比的结晶沸石X和各自具有特定amt的锂阳离子和铯阳离子。将它们掺入与锂阳离子进行离子交换的结晶沸石X吸附剂中。 ;解决方案:在制备用于制备氧气的沸石吸附剂时,应使用摩尔比为SiO 2 Sub> / Al 2 Sub> O 3 Sub的结晶沸石X >不大于3.0,并且与其Al 2 Sub> O 3 Sub>四面体单元相关的阳离子中至少有90%进行了离子交换。之后,再次用混合盐水溶液进行离子交换。其中钠阳离子是必需阳离子,并且铯阳离子或or阳离子的一价阳离子和/或它们的混合阳离子以至少1%且小于5%的量掺入。另外,使与Al 2 Sub> O 3 Sub>四面体单元缔合的锂阳离子为至少80%且小于88%后,将其洗涤,干燥并活化。 ;版权:(C)1998,日本特许厅
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