Process and installation for the recovery and/or purification of the nitrous oxide contained in a waste gas
    1.
    发明授权
    Process and installation for the recovery and/or purification of the nitrous oxide contained in a waste gas 失效
    用于回收和/或净化废气中所含的一氧化二氮的方法和装置

    公开(公告)号:US06348083B1

    公开(公告)日:2002-02-19

    申请号:US09505997

    申请日:2000-02-17

    IPC分类号: B01D5912

    摘要: An installation and a process for the recovery and/or purification of at least one portion of the nitrous oxide (N2O) contained in a flow of waste gas containing nitrous oxide and at least one other gaseous compound, in which: (a) at least one nitrous oxide portion contained in the flow of waste gas is separated by permeation, and (b) at least a portion of the gaseous nitrous oxide separated in step (a) is recovered. Preferably, the source of the flow of waste gas is an industrial unit using an industrial process giving off the waste gas, preferably a unit for the production of adipic acid, a unit for the production of nitrous oxide, a unit for the production of glycoxylic acid or a unit for the production of nitric acid.

    摘要翻译: 用于回收和/或净化包含在含有一氧化二氮和至少一种其它气体化合物的废气流中的一氧化二氮(N 2 O)的至少一部分的装置和方法,其中:(a)至少 通过渗透分离废气流中包含的一个一氧化二氮部分,并且(b)回收在步骤(a)中分离的至少一部分气态一氧化二氮。 优选地,废气流的来源是使用工业过程排出废气的工业单元,优选用于生产己二酸的单元,用于生产一氧化二氮的单元,用于生产糖酵解的单元 酸或硝酸的生产单位。

    Nitrous oxide purification by pressure swing adsorption
    3.
    发明授权
    Nitrous oxide purification by pressure swing adsorption 有权
    一氧化二氮通过变压吸附净化

    公开(公告)号:US06080226A

    公开(公告)日:2000-06-27

    申请号:US163982

    申请日:1998-09-30

    IPC分类号: B01D53/047 C01B21/22

    摘要: A feedstream comprising nitrous oxide is purified by a pressure swing adsorption process employing a copurge with an oxygen-lean stream to produce a high purity nitrous oxide stream. The high purity nitrous oxide stream can be incorporated in a complex for the production of adipic acid to recover nitrous oxide from a dilute waste stream and pass the recovered nitrous oxide to a process for the production of phenol from an aromatic hydrocarbon. Unreacted nitrous oxide from the phenol production step acid can be recovered in a second, or vent PSA step, and combined with the recovery of byproduct nitrous oxide waste streams from the production of adipic for the overall recovery of nitrous oxide, thereby significantly reducing nitrous oxide emissions from the production of adipic acid.

    摘要翻译: 包含一氧化二氮的原料流通过使用与贫氧流混合以产生高纯度一氧化二氮流的变压吸附方法进行纯化。 高纯度一氧化二氮流可以掺入用于生产己二酸的络合物中,以从稀释的废物流中回收一氧化二氮,并将回收的一氧化二氮通过芳烃生产苯酚的方法。 来自酚生产步骤酸的未反应的一氧化二氮可以在第二次或排气PSA步骤中回收,并与从产生二氧化碳的副产物一氧化二氮废物流中回收以便一氧化二氮的总体回收,从而显着减少一氧化二氮 己二酸生产排放。