PURIFICATION OF AIR
    3.
    发明申请
    PURIFICATION OF AIR 审中-公开
    空气净化

    公开(公告)号:WO2013178279A1

    公开(公告)日:2013-12-05

    申请号:PCT/EP2012/060317

    申请日:2012-05-31

    IPC分类号: B01D53/04 B01D53/047

    摘要: A process for the reduction of the level of water, carbon dioxide and nitrous oxide in a feed air stream prior to cryogenic distillation, comprising: a) passing said feed air stream at a feed temperature and a feed pressure in a feed direction through a first adsorbent, whose Henry's Law selectivity for CO 2 over N 2 O measured at 30 °C is at least 12.5, and subsequently through a second adsorbent, whose Henry's Law constant for the adsorption of CO2 measured at 30 °C is less than 1020 mmol/g/atom and whose Henry's Law selectivity for CO 2 over N 2 O measured at 30 °C is at most 5; b) ceasing after a first time period to pass said feed air stream to said first and second adsorbents; c) depressurising the gas in contact with the first and second adsorbents to a second pressure lower than the feed pressure; d) passing a heated regenerating gas at the second pressure and at a temperature which is between 20 °C and 80 °C to at least the second adsorbent in a direction opposite to the feed direction for a second time period, and subsequently passing a second regenerating gas at the second pressure and at a temperature less than the temperature of the heated regenerating gas to the first and second adsorbents in a direction opposite to the feed direction for a third time period; e) ceasing passing regenerating gas to the first and second adsorbents; f) re-pressurising the gas in contact with the first and second adsorbents to the feed pressure; and g) repeating steps a) to f), wherein the second adsorbent occupies from 25% to 40% by volume of the total volume of the first and second adsorbents, and wherein the temperature of the heated regenerating gas is from 10 °C to 60 °C higher than the feed temperature or the temperature of the second regenerating gas, whichever is the higher; and the use of an apparatus comprising a first adsorbent and a second adsorbent as defined above for the reduction of the levels of water, carbon dioxide and nitrogen in a feed air stream wherein the adsorbents are regenerated as set out above.

    摘要翻译: 一种用于在低温蒸馏之前降低进料空气流中的水,二氧化碳和一氧化二氮的水平的方法,包括:a)使进料空气流以进料温度和进料方向的进料压力通过第一 吸附剂,其在30℃下测量的二氧化碳对二氧化碳的亨利定律选择性至少为12.5,随后通过第二吸附剂,其中在30℃下测量的二氧化碳吸附的亨利定律常数小于1020mmol / g /原子 其亨利定律在30°C下测得的二氧化碳对N2O的选择性最多为5; b)在第一时间段之后停止将所述进料空气流通过所述第一和第二吸附剂; c)将与第一和第二吸附剂接触的气体减压至低于进料压力的第二压力; d)使第二压力下的加热再生气体在20℃至80℃之间的温度下至少与第二吸附剂沿进给方向相反的方向通过第二时间段,随后通过第二次 在第二压力和小于加热再生气体的温度的温度下,在与进料方向相反的方向上再生气体到第一和第二吸附剂三次; e)停止通过再生气体到第一和第二吸附剂; f)将与第一和第二吸附剂接触的气体再加压至进料压力; 和g)重复步骤a)至f),其中所述第二吸附剂占所述第一和第二吸附剂的总体积的25体积%至40体积%,并且其中所述加热的再生气体的温度为10℃至 比第二再生气体的进料温度或温度高60℃,以较高者为准; 以及包括如上所述的第一吸附剂和第二吸附剂的装置的使用,用于降低进料空气流中的水,二氧化碳和氮的水平,其中吸附剂如上所述再生。

    METHOD OF HYDROGEN PURIFICATION
    8.
    发明申请
    METHOD OF HYDROGEN PURIFICATION 审中-公开
    氢气净化方法

    公开(公告)号:WO2008017781A3

    公开(公告)日:2008-03-27

    申请号:PCT/FR2007051775

    申请日:2007-08-03

    摘要: Method of gaseous hydrogen purification from a gaseous mixture, said method comprising (a) a step purifying hydrogen from the permeate gas enriched with compressed hydrogen, by an adsorption method using pressure modulation (PSA) in which one or more adsorbers are used that each follow a cycle at intervals with an adsorption phase at the high cycle pressure, essentially equal to P3, and a regeneration phase, producing two regeneration flows: a first recycled regeneration flow and a second non-recycled regeneration flow, characterized by the fact that the recycled regeneration flow exiting the adsorber(s) in regeneration phase is returned, directly or indirectly, towards the compressor C of step (b), without intermediate compression so that a sole compressor C ensures both the compression of the hydrogen-enriched permeate from step (a) and compression of the recycled regeneration gas exiting step (c) for hydrogen purification by adsorption by pressure modulation (PSA).

    摘要翻译: 从气体混合物中气态氢纯化的方法,所述方法包括(a)通过使用压力调节(PSA)的吸附方法从富含压缩氢气的渗透气中净化氢气的步骤,其中使用一种或多种吸附器 在高循环压力下基本等于P3的吸附相间隔的循环和产生两个再生流的再生阶段:第一再循环再生流和第二非再循环再生流,其特征在于循环 在再生阶段离开吸附器的再生流直接或间接地返回到步骤(b)的压缩机C,而没有中间压缩,使得唯一压缩机C确保来自步骤(a)的富氢渗透物的压缩 a)和离开步骤(c)的再循环再生气体的压缩用于通过压力调节(PSA)吸附氢氢净化。

    圧力変動吸着法及び装置
    9.
    发明申请
    圧力変動吸着法及び装置 审中-公开
    压力波动吸附方法和装置

    公开(公告)号:WO2007055035A1

    公开(公告)日:2007-05-18

    申请号:PCT/JP2006/303306

    申请日:2006-02-23

    发明人: 浦上 達司

    IPC分类号: B01D53/04 C01B23/00

    摘要:  半導体製造装置などからの排ガスに含まれるキセノン、クリプトンなどの高付加価値ガスを高濃度、高回収率で回収するに際し、キセノンなどの易吸着成分と窒素などの難吸着成分を同時に高濃度に濃縮できる新たなPSAプロセスを提供するために、本発明は、前記吸着剤を充填した下部筒および上部筒と、前記下部筒へ導入する原料ガスを貯留する原料ガス貯留槽と、前記吸着剤に対し易吸着性を示す主要成分を貯留する易吸着成分貯留槽と、圧縮機とを備えた分離装置を使用し、前記吸着剤に対し易吸着性を示す易吸着成分と、前記吸着剤に対し難吸着性を示す難吸着成分とを回収する圧力変動吸着法であって、  (a)吸着工程と、(b)リンス工程と、(c)下部筒減圧工程と、(d)上部筒減圧工程と、(e)パージ工程とをあらかじめ定められたシーケンスに基づいて、順次繰り返し行うことを特徴とする圧力変動吸着法を提供する。

    摘要翻译: 本发明提供一种压力波动吸附方法,其特征在于,回收高浓度回收的高浓度的半导体制造装置中排出废气中含有氙,氪等高附加值的气体, 能够同时将易吸附成分如氙和难吸附组分例如氮浓缩至高浓度的方法。 在压力波动吸附方法中,使用隔膜,其包括填充有吸附剂的下部气缸和上部气缸,用于储存引入下部气缸的原料气体的原料气体储存罐,容易吸附成分储存罐 储存容易吸附在吸附剂上的主要组分,以及容易吸附在吸附剂上的压缩机和易吸附组分,难以吸附在吸附剂上的难吸附组分, 被收回。 压力波动吸附法的特征在于连续重复(a)吸附步骤,(b)漂洗步骤,(c)降低气缸压力降低步骤,(d)上部气缸减压步骤和(e)基于预定的 序列。

    COATED SCREEN ADSORPTION UNIT FOR CONTROLLING EVAPORATIVE HYDROCARBON EMISSIONS
    10.
    发明申请
    COATED SCREEN ADSORPTION UNIT FOR CONTROLLING EVAPORATIVE HYDROCARBON EMISSIONS 审中-公开
    用于控制蒸发碳氢化合物排放的涂装屏幕吸附单元

    公开(公告)号:WO2006130655A1

    公开(公告)日:2006-12-07

    申请号:PCT/US2006/021063

    申请日:2006-05-31

    IPC分类号: B01D53/04

    摘要: A hydrocarbon adsorption unit for recovery of volatile hydrocarbons which emanate from several sources and which would otherwise be released into the atmosphere through the air cleaner of an automobile engine when the engine is shut off. The unit is positioned in the air intake system such that all air flowing through the engine passes through the unit. The unit comprises a housing having an air inlet and an air outlet. The housing contains a substrate and a volatile hydrocarbon adsorber material coated on the surface of the substrate. The adsorber material may be silica gel, a molecular sieve and/or activated carbon. The material further contains a binder that will cause the material to adhere to the surface of the substrate.

    摘要翻译: 一种碳氢化合物吸附装置,用于回收挥发性碳氢化合物,这些挥发性烃类从多个来源发出,当发动机关闭时,它将通过汽车发动机的空气净化器释放到大气中。 该单元位于进气系统中,使得流过发动机的所有空气通过该单元。 该单元包括具有空气入口和空气出口的壳体。 壳体包含涂覆在基底表面上的基底和挥发性烃吸附材料。 吸附剂材料可以是硅胶,分子筛和/或活性炭。 该材料还含有将导致材料粘附到基底表面的粘合剂。