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    Ultra-high purity monosilane producing process and unit
    2.
    发明授权
    Ultra-high purity monosilane producing process and unit 失效
    超高纯度甲硅烷生产工艺及单位

    公开(公告)号：US5499506A

    公开(公告)日：1996-03-19

    申请号：US256970

    申请日：1994-11-16

    申请人： Takashi Nagamura ,  Shinji Tomita

    发明人： Takashi Nagamura ,  Shinji Tomita

    IPC分类号： F25J3/02 ,  C01B33/04 ,  F25J3/08 ,  F25J3/00

    CPC分类号： C01B33/046 ,  Y10S62/931

    摘要： Provided is a process and an apparatus for producing ultra-high purity monosilane. In a preferred embodiment, the process comprises introducing a monosilane feed gas, which also serves as a heat source, to the lower stage of a rectification column which is sectioned into an upper stage, a middle stage and a lower stage by means of an intermediate portion reboiler-condenser and a lower portion reboiler-condenser. The monosilane feed gas is cooled in the lower portion of the reboiler-condenser so that the higher boiling point components in the feed gas are separated. The remaining lower boiling point components are then introduced into the upper stage by way of the middle stage and the intermediate portion of the reboiler-condenser. The remaining components are condensed in the top portion of the upper stage so that monosilane and the lower boiling point components are separated, with the condensed monosilane becoming a reflux liquid. Ultra-high purity monosilane is thereby obtained and removed from the bottom portion of the upper stage of the unit.

    摘要翻译： PCT No.PCT / EP93 / 03378 371日期：1994年11月16日 102（e）日期1994年11月16日PCT 1993年11月30日PCT PCT。 公开号WO94 / 12837 日期：1994年6月9日。提供了一种生产超高纯度硅烷的方法和设备。 在优选的实施方案中，该方法包括将作为热源的单硅烷进料气体引入精馏塔的下段，该精馏塔通过中间体分段成上段，中段和下段 部分再沸器 - 冷凝器和下部再沸器 - 冷凝器。 在再沸器 - 冷凝器的下部冷却单硅烷进料气体，使进料气体中的较高沸点组分分离。 剩余的低沸点组分然后通过再沸器 - 冷凝器的中间阶段和中间部分被引入上段。 其余的组分在上段的顶部被冷凝，使得甲硅烷和低沸点组分被分离，缩合的甲硅烷变成回流液体。 由此，从单元的上层的底部获得并除去超高纯度的甲硅烷。

    Light gas component separation from a carbon dioxide mixture
    7.
    发明授权
    Light gas component separation from a carbon dioxide mixture 有权
    轻质气体组分与二氧化碳混合物分离

    公开(公告)号：US07201019B2

    公开(公告)日：2007-04-10

    申请号：US10991458

    申请日：2004-11-19

    申请人： Henry Edward Howard

    发明人： Henry Edward Howard

    IPC分类号： F25J3/00

    CPC分类号： F25J3/069 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0252 ,  F25J3/0266 ,  F25J3/029 ,  F25J3/061 ,  F25J3/062 ,  F25J3/0655 ,  F25J3/067 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2220/82 ,  F25J2230/30 ,  F25J2230/80 ,  F25J2235/80 ,  F25J2240/30 ,  F25J2245/02 ,  F25J2260/80 ,  F25J2270/90 ,  Y02C10/12 ,  Y10S62/928 ,  Y10S62/931

    摘要： A method of separating one or more light components, such as helium, from a carbon dioxide containing stream. A two-phase stream is obtained, at least in part, by cooling a pressurized feed stream to at least partially condense such stream. The stream that is subsequently degassed to produce a first vapor stream enriched in the light component(s) and a first liquid stream containing an entrained fraction of the light component(s). The first liquid stream is expanded to create another two-phase stream that is degasified to produce a second vapor stream that is also enriched in the light component(s) and a second liquid stream having an enriched carbon dioxide content. The second liquid stream is repressurized and vaporized. In case of a supercritical feed, the pressurized feed stream is expanded after having been cooled. Thereafter, the feed is degassed to produce the light component enriched vapor stream and a liquid stream enriched in the carbon dioxide. The resultant vapor streams, enriched in the light component(s) may then be further processed to isolate the light components.

    摘要翻译： 从含二氧化碳的流中分离一种或多种轻组分如氦的方法。 至少部分地通过冷却加压进料流以至少部分地冷凝该流而获得两相流。 随后脱气以产生富含光组分的第一蒸气流和含有轻组分夹带部分的第一液流。 将第一液体流膨胀以产生另外的两相流，其被脱气以产生还富含轻组分的第二蒸气流和具有富二氧化碳含量的第二液流。 第二液体流被再加压和蒸发。 在超临界进料的情况下，加压进料流在冷却后膨胀。 此后，将进料脱气以产生富含轻质成分的蒸气物流和富含二氧化碳的液体物流。 然后可以进一步处理富含光成分的所得蒸汽流以分离光组分。