Adsorption control method and controller
    21.
    发明授权
    Adsorption control method and controller 有权
    吸附控制方法和控制器

    公开(公告)号:US08016914B2

    公开(公告)日:2011-09-13

    申请号:US12410523

    申请日:2009-03-25

    IPC分类号: B01D53/047 C01B3/56

    摘要: The present invention provides a method and a control system for controlling an adsorbent bed unit in which an adsorbent bed concentration of an impurity within an adsorbent bed of the adsorbent bed unit is measured. The adsorbent bed concentration is controlled by manipulating the feed cycle time during which an adsorbent bed is adsorbing the impurities to maintain the adsorbent bed concentration at a targeted adsorption bed concentration. The targeted adsorption bed concentration is determined such that the product impurity concentration is maintained at product impurity concentration targets. The method and control system can incorporate a supervisory level of control reactive to product impurity concentration levels and related targets to determine the targeted adsorption bed concentration and a primary level of control that calculates the feed cycle time based upon an error between the measured and targeted adsorption bed concentrations. Proportional integral control can be used for such purposes.

    摘要翻译: 本发明提供一种控制吸附剂床单元的方法和控制系统,其中测量吸附剂床单元的吸附剂床内的杂质的吸附床浓度。 通过控制吸附床吸附杂质的进料循环时间来控制吸附剂床浓度,以将吸附剂床浓度保持在目标吸附床浓度。 确定目标吸附床浓度,使得产物杂质浓度保持在产物杂质浓度目标。 该方法和控制系统可以包含对产品杂质浓度水平和相关目标的反应的控制的监控级别,以确定目标吸附床浓度和基于测量和目标吸附之间的误差计算进料循环时间的主要控制水平 床浓度。 比例积分控制可用于此类目的。

    METHODS AND SYSTEMS FOR HELIUM RECOVERY
    22.
    发明申请
    METHODS AND SYSTEMS FOR HELIUM RECOVERY 有权
    HELIUM RECOVERY的方法和系统

    公开(公告)号:US20100251892A1

    公开(公告)日:2010-10-07

    申请号:US12769196

    申请日:2010-04-28

    摘要: The present invention relates generally to processes and systems for recovering helium from low helium-containing feed gases (i.e., containing less than about 10 volume % helium and more typically, less than about 5% helium by volume). The present invention more particularly relates to processes and systems for recovering helium from low helium-containing feed gases using temperature swing adsorption (TSA) systems and multiple (e.g. two) stage vacuum pressure swing adsorption (VPSA) systems. In preferred embodiments of the invention, the first stage VPSA system is configured to provide regeneration gas for the TSA system, and/or the VPSA second stage tail gas is recycled to the first stage VPSA system.

    摘要翻译: 本发明一般涉及用于从含氦低的原料气中回收氦的方法和系统(即,含有小于约10体积%的氦,更典型地,小于约5体积%的氦)。 本发明更具体地涉及使用变温吸附(TSA)系统和多个(例如两个)级真空变压吸附(VPSA)系统从含氦的进料气中回收氦的方法和系统。 在本发明的优选实施例中,第一级VPSA系统被配置为提供用于TSA系统的再生气体,和/或VPSA第二级尾气再循环到第一级VPSA系统。

    ADSORPTION CONTROL METHOD AND CONTROLLER
    23.
    发明申请
    ADSORPTION CONTROL METHOD AND CONTROLLER 有权
    吸附控制方法与控制器

    公开(公告)号:US20100242722A1

    公开(公告)日:2010-09-30

    申请号:US12410523

    申请日:2009-03-25

    IPC分类号: B01D53/30

    摘要: The present invention provides a method and a control system for controlling an adsorbent bed unit in which an adsorbent bed concentration of an impurity within an adsorbent bed of the adsorbent bed unit is measured. The adsorbent bed concentration is controlled by manipulating the feed cycle time during which an adsorbent bed is adsorbing the impurities to maintain the adsorbent bed concentration at a targeted adsorption bed concentration. The targeted adsorption bed concentration is determined such that the product impurity concentration is maintained at product impurity concentration targets. The method and control system can incorporate a supervisory level of control reactive to product impurity concentration levels and related targets to determine the targeted adsorption bed concentration and a primary level of control that calculates the feed cycle time based upon an error between the measured and targeted adsorption bed concentrations. Proportional integral control can be used for such purposes.

    摘要翻译: 本发明提供一种控制吸附剂床单元的方法和控制系统,其中测量吸附剂床单元的吸附剂床内的杂质的吸附床浓度。 通过控制吸附床吸附杂质的进料循环时间来控制吸附剂床浓度,以将吸附剂床浓度保持在目标吸附床浓度。 确定目标吸附床浓度,使得产物杂质浓度保持在产物杂质浓度目标。 该方法和控制系统可以包含对产品杂质浓度水平和相关目标的反应的控制的监控级别,以确定目标吸附床浓度和基于测量和目标吸附之间的误差计算进料循环时间的主要控制水平 床浓度。 比例积分控制可用于此类目的。