Method and apparatus for producing nitrogen
    7.
    发明授权
    Method and apparatus for producing nitrogen 失效
    用于生产氮的方法和装置

    公开(公告)号:US06767386B2

    公开(公告)日:2004-07-27

    申请号:US10064753

    申请日:2002-08-14

    IPC分类号: B01D53053

    摘要: CMS adsorbents having suitable indexes are used to improve greatly the performance of nitrogen-producing apparatuses where nitrogen is obtained from the air with a PSA method, so as to improve the efficiency of nitrogen production. A nitrogen PSA apparatus is formed with two adsorbing columns where an adsorption step and a regeneration step are performed alternatively and periodically. The adsorption step is for adsorbing oxygen and conducting nitrogen to a product tank with the supply of compressed air from an air compressor, and the regeneration step for releasing the adsorbed gas after the adsorption step. The adsorbing columns are filled with a carbon molecular sieve (CMS) that selectively adsorbs oxygen as an adsorbent. The CMS adsorbs an oxygen/nitrogen amount of 50% of the saturated adsorption amount with a period TO/TN starting from oxygen/nitrogen supply, wherein TO is 5˜10 seconds and TN is larger than TO by more than 41 times.

    摘要翻译: 使用具有适当指标的CMS吸附剂大大提高了利用PSA法从空气中获得氮气的氮气生产设备的性能,从而提高氮气生产效率。 形成有两个吸附塔的氮PSA装置,其中交替地和周期地执行吸附步骤和再生步骤。 吸附步骤是用空气压缩机供给压缩空气吸附氧气并将氮气导入产品罐,以及在吸附步骤后释放吸附气体的再生步骤。 吸附柱填充有选择性吸附氧作为吸附剂的碳分子筛(CMS)。 CMS从氧/氮供应开始以TO / TN周期吸附50%饱和吸附量的氧/氮量,其中TO为5〜10秒,TN大于TO大于41倍。

    Hydrogen storage in carbon material
    9.
    发明授权
    Hydrogen storage in carbon material 有权
    碳材料储氢

    公开(公告)号:US06290753B1

    公开(公告)日:2001-09-18

    申请号:US09381791

    申请日:1999-09-22

    IPC分类号: C01B3100

    摘要: In a method for storing hydrogen in a carbon material containing microstructures in the form of cones with cone angles being multiples of 60°, the carbon material is introduced in a reaction vessel which is evacuated while the carbon material is kept at a temperature of 295-800 K, after which pure hydrogen gas is introduced in the reaction vessel, the carbon material being exposed to a hydrogen gas pressure in the range of 300-7600 torr such that the hydrogen gas is absorbed in the carbon material, and after which the reaction vessel is left at the ambient temperature with the carbon material under a fixed hydrogen gas pressure. For use the hydrogen is released in the form of a gas from the carbon material either at ambient temperature or by heating the carbon material in the reaction vessel. In a method for refining a carbon material of this kind for hydrogen storage, the carbon material is produced in a reaction chamber with the use of a catalyst for adjusting the cone angle distribution of the microstructures. Use for storing of hydrogen as fuel for powering transport means, including vehicles.

    摘要翻译: 在将含有碳纳米管的碳材料以锥角为60°的锥体的碳材料中储存的方法中,碳材料被引入反应容器中,该反应容器被抽真空,同时碳材料保持在295℃的温度, 800K,然后将纯氢气引入反应容器中,碳材料暴露于300-7600乇范围内的氢气压力,使得氢气被碳材料吸收,之后反应 容器在环境温度下与碳材料保持在固定的氢气压力下。 对于使用,在环境温度下或通过加热反应容器中的碳材料,氢气以碳材料形式释放。 在这种用于精炼储氢的碳材料的方法中,通过使用用于调节微结构的锥角分布的催化剂在反应室中产生碳材料。 用于储存氢气作为为包括车辆在内的运输工具供电的燃料。

    Modified carbon molecular sieve adsorbents
    10.
    发明授权
    Modified carbon molecular sieve adsorbents 失效
    改性碳分子筛吸附剂

    公开(公告)号:US5071450A

    公开(公告)日:1991-12-10

    申请号:US583067

    申请日:1990-09-14

    摘要: A process is provided for making a modified carbon molecular sieve which is suitable for separating gases having different adsorption rates on the sieve. The process involves modifying a starting sieve support having a majority of micropores with an effective pore size of about 4.5 to 20 angstroms, with a two-step process in which the sieve is contacted with two different concentrations of a volatile carbon-containing organic compound, preferably a hydrocarbon. The concentration of the carbon-containing compound used in the first step is larger than that in the second step, so that the pore openings of the micropores of the support are narrowed successively in two distinct steps without filling the micropores themselves. The invention also discloses an improved carbon molecular sieve and the separation of gases, such as oxygen from nitrogen, by the use of this improved adsorbent.