NOx adsorbing apparatus and exhaust-gas converting apparatus
    11.
    发明授权
    NOx adsorbing apparatus and exhaust-gas converting apparatus 有权
    NOx吸附装置和排气转换装置

    公开(公告)号:US08435456B2

    公开(公告)日:2013-05-07

    申请号:US12812096

    申请日:2008-12-26

    Abstract: A first NOx adsorption material 20 exhibiting a peak temperature being 200° C. or less at which an elimination amount of adsorbed NOx becomes the maximum is put in place on an exhaust-gas upstream side, and a second NOx adsorption material 21 exhibiting a peak temperature surpassing 200° C. at which an elimination amount of adsorbed NOx becomes the maximum is put in place on an exhaust-gas downstream side of the first NOx adsorption material 20. In low-temperature region, NOx are adsorbed on the first NOx adsorption material 20; and, in high-temperature region, NOx having been eliminated from the first NOx adsorption material 21 are adsorbed on the second NOx adsorption material 21 again. Therefore, it is possible to adsorb NOx form low-temperature region and up to high-temperature region efficiently, and thereby an amount of NOx being discharged from an NOx reduction catalyst to be put in place on a downstream-side thereof is reduced.

    Abstract translation: 在废气上游侧放置表现出吸附NOx消除量达到最大值的峰值温度为200℃以下的第一NOx吸附材料20,显示峰值的第二NOx吸附材料21 在第一NOx吸附材料20的废气下游侧放置超过200℃的吸附NOx排出量最大的温度。在低温区域,NOx吸附在第一NOx吸附 材料20 并且在高温区域中,从第一NOx吸附材料21排出的NOx再次被吸附在第二NOx吸附材料21上。 因此,可以有效地将NOx形成低温区域和高温区域吸附,从而在其下游侧将从NOx还原催化剂排出的量被排出到位。

    METHOD FOR REMOVING PHOSPHORUS
    19.
    发明申请
    METHOD FOR REMOVING PHOSPHORUS 有权
    去除磷的方法

    公开(公告)号:US20110062084A1

    公开(公告)日:2011-03-17

    申请号:US12650588

    申请日:2009-12-31

    Abstract: A method for removing phosphorus includes at least the steps of: 1) placing lanthanum hydroxide (absorbent) into a device for removing phosphorus, and allowing sewage having a phosphorus content of less than 100 mg/L to flow through the device; 2) adding sodium hydroxide (regeneration solution of the absorbent) when the absorption capacity of the device is exhausted, and allowing the regeneration reaction to proceed for between 4 and 12 hours; and 3) collecting eluate from step 2) and recycling phosphorus. The method for removing phosphorus is highly efficient, employs absorbent material having a large absorption capacity and low production cost. The method is simple and convenient to practice, and low in cost.

    Abstract translation: 除磷的方法至少包括以下步骤:1)将氢氧化镧(吸收剂)放入用于除磷的装置中,并允许磷含量小于100mg / L的污水流过装置; 2)当装置的吸收能力耗尽时,加入氢氧化钠(吸收剂的再生溶液),使再生反应进行4〜12小时; 和3)从步骤2)收集洗脱液和回收磷。 除磷的方法是高效的,使用吸收能力大且生产成本低的吸收材料。 该方法简单实用,成本低。

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