Method for separating gas mixtures by means of pressure changing
adsorption technique
    2.
    发明授权
    Method for separating gas mixtures by means of pressure changing adsorption technique 失效
    通过压力变化吸附技术分离气体混合物的方法

    公开(公告)号:US4404004A

    公开(公告)日:1983-09-13

    申请号:US384157

    申请日:1982-06-01

    IPC分类号: B01D53/04 B01D53/047

    摘要: A method using pressure adsorption techniques for separating individual gas components from gas mixtures on adsorption agents in which a gas mixture is fed under increased pressure onto and in contact with an adsorption agent layer maintained in a separation reactor wherein undesirable gas components are adsorbed and thereafter the product gas is discharged so that a subsequent build up of pressure to adsorption pressure takes place in the layer by gas flow in reverse direction with respect to the adsorption direction followed by a subsequent adsorption stage wherein in accordance with the invention the pressure relief and rinsing action are caused to occur in two stages using reverse direction of slow with respect to the direction of adsorption; the relief gas obtained from the first reverse flow pressure relief stage is used as a rinsing gas for the first rinsing stage; the relief gas obtained from the second reverse flow pressure relief stage is discharged as a remainder gas and the product gas is used as a rinsing gas for the second rinsing stage.

    摘要翻译: 一种使用压力吸附技术的方法,用于将气体混合物中的气体混合物中的各种气体成分从吸附剂中分离,其中气体混合物在增压下进入并保持在分离反应器中的吸附剂层中,其中不希望的气体组分被吸附, 产物气体排出,从而随后在相对于吸附方向相反方向的气体流中在层中发生吸附压力的压力,随后是随后的吸附阶段,其中根据本发明,压力释放和漂洗动作 相对于吸附方向使用相反方向的两个方向发生; 将从第一反向流动压力释放阶段获得的缓释气体用作第一冲洗阶段的漂洗气体; 从第二反向流动压力释放级获得的释放气体作为剩余气体排出,产物气体用作第二漂洗阶段的漂洗气体。

    Method for separating gas mixtures by means of a pressure changing
technique
    4.
    发明授权
    Method for separating gas mixtures by means of a pressure changing technique 失效
    通过压力变化技术分离气体混合物的方法

    公开(公告)号:US4406674A

    公开(公告)日:1983-09-27

    申请号:US384156

    申请日:1982-06-01

    IPC分类号: B01D53/04 B01D53/047

    摘要: Method for separating gas mixtures resulting from direct flow loading of adsorption reactors by means of a pressure change technique in a two stage adsorption reactor consisting of a prefilter and a separating filter, whereby strongly adsorbable impurities from the gas mixture are adsorbed in the prefilter and the remainder of the undesirable gas components are adsorbed in the separating reactor. Thereby, product gas flows off at the end of the separating reactor shortly before the passage therethrough of a non-desirable gas component. Thereafter, the prefilter and the separating reactor are disconnected and the prefilter is partially relieved by a gas counter flow and the separating reactor is partially relieved by direct gas flow. After reconnection of prefilter and separating reactor the unit is further released in the counter current, subsequently rinsed and is again brought to charge pressure in the direct or counter current. The prefilter can be prerinsed before the gas like reconnection with the separating reactor. During rinsing and pressure build up one can use relieve gas. Preferably, four coupled two stage adsorption reactors are used as well as an additional prefilter.

    摘要翻译: 在由预过滤器和分离过滤器组成的两级吸附反应器中通过压力变化技术分离由吸附反应器的直接流动负载产生的气体混合物的方法,其中来自气体混合物的强吸附杂质被吸附在预过滤器中,并且 剩余的不需要的气体组分被吸附在分离反应器中。 因此,产物气体在不期望的气体组分通过之前不久就在分离反应器的末端流出。 此后,预过滤器和分离反应器被断开,并且预过滤器被气体逆流部分地释放,并且分离反应器被直接气流部分地释放。 在重新连接预过滤器和分离反应器之后,将单元进一步在逆流中释放,随后漂洗并再次以直流或逆流充电。 预过滤器可以在气体像预分离反应器重新连接之前被预先冲洗。 在冲洗和压力建立过程中,可以使用缓解气体。 优选地,使用四个耦合的两级吸附反应器以及另外的预过滤器。

    Process for the enrichment of gases
    7.
    发明授权
    Process for the enrichment of gases 失效
    气体浓缩过程

    公开(公告)号:US4011065A

    公开(公告)日:1977-03-08

    申请号:US523687

    申请日:1974-11-14

    IPC分类号: B01D53/04 C01B13/02 B01D15/06

    摘要: An initial gaseous mixture of at least two components is passed through an adsorber which preferentially adsorbs one of the components. This initially loads the adsorber. Subsequently, another gaseous mixture, having a greater concentration of the preferentially adsorbed component than the initial gaseous mixture, is passed through the adsorber so as to additionally load the adsorber. Part of the gas in the adsorber is then removed. This initially unloads the adsorber and yields a first fraction containing both components with the concentration of the preferentially adsorbed component being greater than that in the initial gaseous mixture. Subsequently, part of the gas still remaining in the adsorber is removed so as to further unload the adsorber. This results in a second fraction including both components and wherein the concentration of the preferentially adsorbed component is greater than that in both the second gaseous mixture to be passed through the adsorber and the first fraction removed from the adsorber. Finally, the remainder of the gas in the adsorber is removed so as to completely unload the adsorber. This yields a third fraction including both components with the concentration of the preferentially adsorbed component being lower than that in the second fraction removed from the adsorber but greater than that in the initial gaseous mixture passed into the adsorber. The first and third fractions may be used for additionally loading the adsorber in a subsequent cycle. A preferred application is the enrichment of oxygen-containing gases, particularly air, which include a component of greater molecular size than oxygen. A preferred adsorber is molecular sieve coke which preferentially adsorbs the oxygen. The process permits air to be enriched to such an extent that the product fraction, namely, the second fraction, removed from the adsorber contains between 70 and 95 volume percent of oxygen.