Preparation for high activity, high density carbon
    2.
    发明授权
    Preparation for high activity, high density carbon 失效
    高活性,高密度碳的制备

    公开(公告)号:US5276000A

    公开(公告)日:1994-01-04

    申请号:US967982

    申请日:1992-10-28

    CPC classification number: C01B31/125 C01B31/12 Y10S95/901

    Abstract: Lignocellulosic carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore volume size distribution to optimize the carbon's mesoporosity. An improved process is disclosed for producing the carbon, as are its application in emission control for vehicles.

    Abstract translation: 激活木质纤维素碳质材料以在有效地改变颗粒孔体积尺寸分布以优化碳的介孔性的条件下产生高活性,高密度气相活性炭。 公开了用于生产碳的改进方法,以及其在车辆排放控制中的应用。

    Method for reducing emissions from evaporative emissions control systems
    3.
    发明授权
    Method for reducing emissions from evaporative emissions control systems 有权
    减少蒸发排放控制系统排放的方法

    公开(公告)号:US06540815B1

    公开(公告)日:2003-04-01

    申请号:US10100362

    申请日:2002-03-18

    Abstract: Disclosed is a method for sharply reducing diurnal breathing loss emissions from automotive evaporative emissions control systems by providing multiple layers, or stages, of adsorbents. On the fuel source-side of an emissions control system canister, high working capacity carbons are preferred in a first canister (adsorb) region. In subsequent canister region(s) on the vent-side, the preferred adsorbent should exhibit a flat or flattened adsorption isotherm on a volumetric basis and relatively lower capacity for high concentration vapors as compared with the fuel source-side adsorbent. Multiple approaches are described for attaining the preferred properties for the vent-side canister region. One approach is to use a filler and/or voidages as a volumetric diluent for flattening an adsorption isotherm. Another approach is to employ an adsorbent with the desired adsorption isotherm properties and to process it into an appropriate shape or form without necessarily requiring any special provision for dilution. The improved combination of high working capacity carbons on the fuel source-side and preferred lower working capacity adsorbent on the vent-side provides substantially lower diurnal breathing emissions without a significant loss in working capacity or increase in flow restriction compared with known adsorbents used in canister configurations for automotive emissions control systems.

    Abstract translation: 公开了通过提供吸附剂的多个层或阶段来急剧减少来自汽车蒸发排放控制系统的日间呼吸损失排放的方法。 在排放控制系统罐的燃料源侧,在第一罐(吸附)区域中优选高工作容量的碳。 在排气侧的随后的罐区域中,与燃料源侧吸附剂相比,优选的吸附剂在体积基础上应该呈现平坦或平坦的吸附等温线,并且相对较低的高浓度蒸气容量。 描述了用于获得排气侧罐区域的优选性能的多种方法。 一种方法是使用填料和/或空隙作为容积稀释剂来平坦化吸附等温线。 另一种方法是使用具有所需吸附等温线性质的吸附剂,并将其加工成合适的形状或形式,而不需要任何特殊的稀释配置。 在排气侧的燃料源侧和优选的较低工作能力的吸附剂改进的高加工能力碳的组合提供了明显较低的昼夜呼吸排放,而与罐中使用的已知吸附剂相比,工作能力没有显着损失或流量限制增加 汽车排放控制系统的配置。

    Emission control device
    4.
    发明授权
    Emission control device 失效
    排放控制装置

    公开(公告)号:US5238470A

    公开(公告)日:1993-08-24

    申请号:US909065

    申请日:1992-07-02

    CPC classification number: C01B31/12

    Abstract: Lignocellulosic carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore size distribution to optimize the carbon's mesoporosity. Alternative processes are disclosed for producing the carbon, as are its application in emission control for vehicles.

    Abstract translation: 在有效改变颗粒孔径分布以优化碳的中孔性的条件下,木质纤维素碳质材料被活化以产生高活性,高密度气相活性炭。 公开了生产碳的替代方法,以及其在车辆排放控制中的应用。

    Preparation for high activity high density carbon
    5.
    发明授权
    Preparation for high activity high density carbon 失效
    高活性高密度碳的制备

    公开(公告)号:US5206207A

    公开(公告)日:1993-04-27

    申请号:US853133

    申请日:1992-03-18

    Inventor: Edward D. Tolles

    CPC classification number: C01B31/125 C01B31/12 Y10S95/901

    Abstract: Carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore size distribution to optimize the carbon's mesoporosity. The carbon is particularly suited for application in emission control for vehicles.

    Abstract translation: 在有效地改变颗粒孔径分布以优化碳的介孔度的条件下,碳质材料被活化以产生高活性,高密度气相活性炭。 碳特别适用于车辆的排放控制。

    Coated activated carbon for automotive emission control
    9.
    发明授权
    Coated activated carbon for automotive emission control 有权
    涂层活性炭用于汽车排放控制

    公开(公告)号:US07179382B2

    公开(公告)日:2007-02-20

    申请号:US10287492

    申请日:2002-11-05

    CPC classification number: C01B32/372 Y10T428/25 Y10T428/29 Y10T428/2991

    Abstract: A method for avoidance of attrited carbon dust is disclosed to lead to improved canister performance in emission control. Product attrition by dusting of granular and shaped activated carbons is disclosed to be reduced significantly, or essentially eliminated, by the application of a thin, continuous polymer coating on the granular or shaped activated carbon, without a reduction in adsorption velocity or capacity of the activated carbon when used in automotive emission control canisters.

    Abstract translation: 公开了一种用于避免磨损的碳粉尘的方法,以便改善排放控制中的罐性能。 通过在颗粒状或成形的活性炭上施加薄的连续的聚合物涂层,而不会降低活化的吸附速度或容量,公开了通过粉碎颗粒状和活性炭的产物磨损显着减少或基本消除。 用于汽车排放控制罐时的碳。

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